Ijaah-latin 2.indd
Iranian Journal of Aquatic Animal Health
2 (1) 54-65
Antibacterial activity, antibiotic susceptibility and probiotic use of lac-
tic acid bacteria (LAB) in Persian sturgeon (Acipenser persicus)
M Soltani 1, A Shenavar Masouleh 1,2, M Ahmadi 2, M Pourkazemi 1 and A Taherimirghaed 2
1Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran; Center of excel-lence of aquatic animal health, University of Tehran, Iran2International Sturgeon Research Institute, Rasht, Iran
Recived: June 2015 Accepted: November 2015
Growth behavior of five lactic acid bacteria pre-viously isolated from Persian sturgeon (
Nowadays, a high request for consumption of aqua-
Acipenser
culture production has been significantly increased
persicus), were evaluated at different pH, tempera-ture and salt concentrations. Also, antibacterial ac-
together with a remarkable decrease in the wild
tivity of extracellular products (ECPs) of this LAB
aquatic animal stock resources. Appllication of new
were assessed to
commercial aquatic animal species and aquaculture
Aeromonas hydrophila. Further,
their antibiotic susceptibility was determined with
methods are generally raised some new diseases and
some commonly used antibiotics in aquaculture.
economical problems (Oidtmann, Thrush, Denham
In an in vivo work the effect of
& Peeler 2011). Therefore, there is a highly demand
Lactococcus lactis
as the supplementary diet was evaluated on growth
for new methods for prevention and treatments of
performance of Persian sturgeon for a period of 56
fish diseases in aquaculture industry in order to in-
days. Strong growth of all LAB were seen at 20 and
crease the cost-benefit for the farmers.
30˚C, as well as 40 and 80 g L-1 NaCl. The LAB
Application of antibiotics for treatment and con-
ECPs exhibited varied results of antagonism to the
trol of fish diseases can cause a harmful effect for both the environment and consumer. The residual
A. hydrophila with maximum activity observed at temperature between 25 and 30˚C. Also, the higher
of chemical substances such as antibiotics could be
antagonistic activity was observed for ECPs of
appeared as some drug resistances in both animal
and human bacterial flora. Hence to improve the op-
cibaria,
P. pentosaceus, and
L. lactis at pH 9. Both
tional tools for prevention of fish diseases it should
W. cibaria and
E. faecalis were resistance to oxy-tetracycline, erythromycin, trimethoprim sulfame-
be deflected to find some new health managements
thoxazol, enrofloxacin, florfenicol, and flumequine,
such as enhancing the husbandry, the water quality,
decreasing the fish densities, improveding food ef-
L. lactis was sensitive to oxytetracycline,
erythromycin, enrofloxacin, florfenicol. These re-
ficacy, vaccines, probiotics and immunostimulants
sults showed that use of
(Sharifuzzaman & Austin 2009). Although vac-
L. lactis can act as a posi-
tive probiotic in Persian sturgeon feed via improve-
cines and chemotherapeutic treatments have been
ment of fish growth performance, feed efficiency
used for protection of fish from bacterial diseases
and fish health.
but sometimes need more therapeutics to prevent or treat fish infections because vaccination process
Keywords: sturgeon, health,
Lactococcus lactis,
is frequently incapable in immature fish (Balcazar,
Vendrell, Blas, Ruiz-Zarzuela, Múzquiz & Gironés 2008).
Correspondence M Soltani, Department of Aquatic
Intensive sturgeon culture are exposed to stressful
Animal Health, Faculty of Veterinary Medicine,
conditions and culture may result in incidences of
University of Tehran (e-mail:
[email protected])
some diseases, which have caused acute economic
M Soltani et al., LAB in Persian sturgeon (Acipenser persicus)
losses (Soltani & Kalbassi 2001; Khoshbavar-Rost-
Merrifield & Masouleh 2013).
A. hydrophila (A4)
ami, Soltani & Hassan 2006,2007; Yang & Li 2009;
strain was originally isolated from diseased Persian
Meng, Xiao & Zeng 2011). Persian sturgeon,
Acip-
Sturgeon (Department of Aquatic Animal Health,
enser persicus, is one of the most important com-
Faculty of Veterinary Medicine, University of Teh-
mercial fish species in the South Caspian Sea.
ran, Iran). LAB strains were grown on MRS broth
The beneficial effects of some probiotics, prebiotics,
(Merck, Germany) incubated for overnight at 30
immunostimulants, and vitamin have been demon-
°C before analysis.
A. hydrophila in TSB (Merck,
strated in a number of previous studies in sturgeon
Germany) incubated for overnight at 25 °C ahead
(Falahatkar, Soltani, Abtahi, Kalbassi, & Pourka-
zemi 2006; Jalali, Ahmadifar, Sudagar & Takami 2009; Akrami, Abdolmajid, Abbas & Abdolmo-
Growth Ability at Different Salt Concentration,
hammad 2009; Jafaryan et al. 2010; Hoseinifar et al.
Temperature, and pH
2011a,b,c; Askarian, Kousha, Salma & Ringø 2011)
Growth ability of LAB at different environmental
However, there is no information for the dietary ef-
conditions was performed following method de-
fect of
lactococcus lactis as a probiotic in sturgeon.
scribed by Reddy (2007), with slight modifications.
Also, despite isolation and in some contents charac-
The growth behavior of LAB was assessed at five
terization of some lactic acid bacteria (LAB) from
different temperatures of 4, 10, 20, 30, and 40°C by
alimentary tract of sturgeons have reported, there is
inoculating into 5 mL MRS broth (Merck, Germa-
no information regarding the physiological respons-
ny) incubated for 24 h.
es of this LAB to environmental and chemical vari-
Striled MRS broth (Merck, Germany) with different
ables. The aim of the present study was to assess
pHs values of 3.7, 4.5, 5, and 6.7 (adjusted with 1N
the growth behavior of five species of LAB con-
HCL) (Merck, Germany) and pH 8 and 9 (adjust-
sisting of Lactococcus garvieae, Weissella cibaria
ed with 1N NaOH) (Merck,Germany) were used
, Pediococcus pentosaceus,
Lactococcus lactis and
to evaluate the LAB growth. A volume of 100μl
Enterococcus facealis isolated from Persian stur-
of overnight culture was inoculated to broth tubes
geon fingerling intestine at different salt concentra-
maintained at different pH incubated at 30°C for 24
tions, temperatures and pHs. Also, the antibacterial
h. Also, the LAB growth was assessed at four differ-
activity of the extracellular products of this LAB
ent salinity consisting of 40, 80, 120 and 300 g L-1
was evaluated to a virulent strain of
Aeromonas hy-
NaCl prepared in MRB broth (Merck, Germany)
drophila. The antibiotic resistance profiles of these
inoculated with 100μl of 24 h culture of each LAB
LABs were also tested using some commonly used
incubated at 30°C for 24h. The growth behavior of
antibiotics in the aquaculture. Moreover, potential
LABs was measured by turbidimetric assay.
use of
Lactococcus lactis (JF831150) was assessed on some growth performance, haematological and
Antibacterial Activity of LAB Extracellular
nonspecific immune response parameters of Persian
The agar well diffusion assay was used to detect the possible antimicrobial activity of the LAB su-
Material and Methods
pernatant cultures according to procedure described by Casla, Requena & Gómez (1996) with slight
Microorganisms and Culture Conditions
modifications. Briefly, wells of 5 mm diameter of
Lactococcus garvieae (JF831155), Weissella cibaria
TSA (Merck,Germany) were loaded with 50 μl of
(JF831160), Pediococcus pentosaceus (JF831149),
the LAB culture supernatants obtained by cen-
Lactococcus lactis (JF831150), and Enterococcus
trifugation (Hettich,Germany) at 10,000 ×g for 10
faecalis (JF831161) were originally isolated from
min at 4°C, filtered through a 0.2 μm millipore fil-
intestine of Persian sturgeon (
Acipenser persicus)
ter (Whatman®, Schleicher & Schuell) buffered at
(Soltani, Pourkazemi, Ahmadi, Taherimirghead,
Iranian Journal of Aquatic Animal Health
pH 6.7. The supernatant of each LAB isolate was
John (2008 b) with slight modification. Briefly, the
prepared with four levels of pH of 6.7, 7.0, 8.0,
bacterium was inoculated in MRS broth (Merck,-
and 9.0. Lawns of the
A. hydrophila were prepared
Germany) incubated for 24 h at 30 ˚C and centri-
by inoculating (ca 108cells/well) in 15 mL of the
fuged at 5000 g for 10 min at 4 ˚C,. The bacterial
soft-overlay (7.5 g L-1 agar) medium. The antibac-
cells were then washed three times with sterile sa-
terial activity of LAB ECPs against
A. hydrophila
line to obtain a suspension of ca 1010 cells mL-1.
(108 cells/well) was also examined at four different
The bacterial suspension was the sprayed into the
temperatures of 4, 25, 30, and 60°C provided at pH
commercial food [Biomar, 470 g kg-1 protein, 140 g
6.7 for 30 min using well diffusion agar and zones
kg-1 lipid, 81 g kg-1 ash , 31 g kg-1 cellulose/fibre,
of growth inhibition were measured after an over-
8.8 g kg-1 phosphorous, 23.4 g kg-1 calcium, 2.7 g
night incubation.
kg-1 sodium, vitamin A 7500(Ui kg-1), vitamin D3 1500(Ui kg-1), copper 1.6 (mg kg-1), Magnesium
Antibiotic Resistance Profiles
12.6 (mg kg-1), Zinc 78.6(mg kg-1), Iodine 1.9 (mg
The antibiotic resistance profiles were measured
kg-1), and ethoxyquin 1.9 (mg kg-1)] slowly, mix-
following methods described by Bello, Cocol-
ing part by part in a drum mixer to give experimen-
in, Zeppa, Field, Cotter & Hill (2012), with slight
tal diets containing
L. lactis at 106, 107, and 108 cfu
modifications. The LAB were grown in MRS broth
g-1 diets. The pellets were air-dried at 25 ˚C under
(Merck,Germany) for an overnight at 30 °C. A vol-
sterile conditions for 12 h, packed and stored in a
ume of 20 mL of TSA agar (Merck, Germany) was
refrigerator (4˚C) until used within 3 days. The via-
inoculated with revitalized LAB strains (1% v/v)
bility of the incorporated bacterial cells in the feed
and permitted to solidify. Antibiotic resistance pat-
was assessed by CFU counting via spreading onto
tern was determined by the disk diffusion method
MRS agar (Merck, Germany). Three groups of fish
using oxytetracycline (30 μg/disc), erythromycin
(each group containing 15 fish) were fed with diets
(15 μg /disc), enrofloxacin (5 μg/disc), florfenicol
containing 106 (Treatnebt one=T1), 107 (Treatnebt
(30 μg/disc), flumequine (30 μg/disc), and trimetho-
one=T2), and 108 (Treatnebt one=T3) cfu g-1 of
prim -sulfamethoxazol (200 μg/disc)(Padtan-Teb,
Lactococcus lactis for 56 days. The forth group was
Iran).The plates were incubated at 30 °C for 24 h
considered as control . Fish were fed 3% biomass
and the zone of inhibition was measured.
per day provided in equal rations at 09.00 and 17.00 h.
Fish and rearing condition
Apparently healthy Persian sturgeon (
Acipenser
Growth performance and carcass composition
persicus) weighing 114±5.47g were acclimated to
Growth performance was assessed in terms of con-
the rearing conditions for 2 weeks at the Interna-
dition factor (CF), specific growth rate (SGR), feed
tional Sturgeon Research Institute, Guilan Province,
conversion ration (FCR), protein efficiency ration
Iran prior to the experiment. The fish were randomly
(PER), hepatosomatic index (HSI), weight gain
divided into 4 groups each group containing 15 fish.
(WG), initial body weight (IBW), and feed efficien-
Water quality parameters of freshwater consisting
cy (FE). The calculations were performed using the
of temperature, dissolved oxygen content, and pH
following formulae (Merrifield, Dimitroglou, Brad-
were 20.48± 1.02 ˚C, 6.62±0.43 mg L-l, and 6.8-
ley, Baker & Davies 2009 a):
7.25, respectively.
CF = W×100 / L3; SGR= (LnFW-LnIW) × 100/T; FCR= feed intake/ (Wf-Wi); PER=(Wf-Wi)/PI;
Preparation of feed with the Lactococcus lactis
HSI= LW × 100/W; WG= (Wf-Wi); IBW = (Wf -
and feeding fish
Wi) × 100 / BWi ; × 100 ( ; FE= [(Wf-Wi)/FI]×100,
Preparation of feed with the
Lactococcus lactis
where W is the weight in g, FW is the final weight,
(JF831150) was according to Aly, Mohamed &
IW is the initial weight, L is the length in mm, T
M Soltani et al., LAB in Persian sturgeon (Acipenser persicus)
is the duration of feeding (in days), WG, is the wet
One-Way ANOVA (SPSS 17.0; SPSS Inc., Chicago,
weight gain, LW is the liver weight, FI is the feed
IL, USA) and Duncan's test were conducted to find
intake and PI is the protein ingested. Fish were ana-
significant differences between treated and control
lysed according to AOAC (1995) protocols to deter-
trials at P<0.05 level.
mine carcass composition.
Sample collection and analysis
Fish samples and analysis were collected to proce-
Bacterial growth behaviar
dures described by Aly, Ahmed, Ghareeb & Mo-
All LAB isolates were able to grow at 20 and 30˚C
hamed 2008a) and Harikrishnan, Kim, Kim, Bal-
while no growth occurred at 4, 10 and 40˚C. Also,
asundaram & Heo (2011) with slight modification.
all LAB isolates were able to grow at salinites 4,
After 8 weeks feeding, nine fish were randomly
and 8 g L-1 (w/v) NaCl with no growth at 12 and 30
collected from each treatment and blood samples
g L-1 (w/v) NaCl. Furthermore, both
W. cibaria and
were obtained from caudal vein after fish being an-
E. faecalis were able to grow at pH 3.7-9, while
L.
aesthetized with solution of tricaine methane-sul-
lactis and
L. garvieae were able to grow at pH 5-9
fonate (MS-222, Sigma Chemical Co., USA). The
and pH 6-9, respectively. Interstingly the P. pentosa-
sera samples were pooled and preserved at -20 ˚C
cus could not grow above pH 7.
or used immediately for analysis. Haematocrit lev-els (expressed as % packed cell volume: % PCV),
white and red blood cells (WBC: ×103 mm-3 and
Both
W. cibaria and
E. faecalis were resistance to
RBC: ×106 mm-3), haemoglobin (Hb: g dL-1),
the examined antibiotics while
L. lactis exhibited
mean corpuscular volume (MCV: fl), mean corpus-
sensitivity to oxytetracycline (23mm), erythromy-
cular haemoglobin (MCH:Pg), mean corpuscular
cin (22mm), enrofloxacin (21mm) and florfenicol
haemoglobin concentration (MCHC: %) and leuko-
(18mm).
L. garvieae was also sensitive to all of
cytes were determined as lymphocytes (LYM: %),
used antibiotic (13-26mm) except erythromycin.
P.
monocytes (MON:%), eosinophils (EOS;%), and
pentosaceus exhibited sensitive only to oxytetracy-
neutrophils (NEU:%) following standard methods
cline (11mm).
described by Merrifield et al. (2009a) and Rawling, Merrifield & Davies (2009). The serum lactate de-
Anti- Aeromonas hydrophila activity of ECPs
hydrogenate (LDH: IU mL-1), alanine aminotrans-
The maximum antagonistic activity of 9-10 mm of
ferase (ALT: IU mL-1), aspartate aminotransferase
ECPs against
A. hydrophila were observed at tem-
(AST: IU mL-1) activities, glucose (mM), and con-
perature between 25 and 30˚C for the ECPs of
P.
centration of total protein (g L-1) were determined
pentosaceus,
L. lactis,
E. faecalis while
W. cibaria
using an autoanalyzer (Biotecnica Instruments, Ita-
showed moderate activity (7-8mm) at the examined
ly). Also, serum lysozyme activity was determined
temperatures and
L. garvieae showed highest activ-
according to Sahoo, Mahapatra, Saha, Barat, Sahoo,
ity(10mm) at 30˚C. The highest antagonistic activ-
Mohanty, Gjerde, Ødegard, & Salte (2008). Alter-
ities (9-10mm) were observed for the ECPs of
W.
native complement activity (ACH50) was assayed
cibaria,
P. pentosaceus, and
L. lactis at pH 9 while
using the method of Matsuyama, Tanaka, Nakao &
L. garvieae and
E. faecalis showed moderate activ-
Yano (1988). The level of IgM was measured using
ity (7-8mm) at the examined pH.
analysis kits (Binding Site Company, www.binding-site.co.uk) in MININEPH auto analyzer (Binding
Haematological and immunological parameteres
Haematocrit levels (%PCV), MCHC, MON re-mained unaffected in the experimental groups.
WBC and RBC counts were significantly higher in T3 than control. On the other hand, the highest HB,
Iranian Journal of Aquatic Animal Health
Table 1 Changes of hematological parameters of
Acipenser persicus fed
Lactococcus lactis (JF831150) for 56 days
Haemoglobin (g dl-1)
Haematocrit (% PCV)
Mean Corpuscular Volume (ft)
Mean Corpuscular Haemoglobin Concentration (%)
Mean Corpuscular Haemoglobin (Pg)
Basal diet without bacteria (Control), basal diet containing 106 CFUg-1
Lactococcus lactis (JF831150) (T1), basal diet containing 107 CFUg-1
Lactococcus lactis (JF831150) (T2) and basal diet containing 108 CFUg-1
Lactococcus lactis (JF831150) (T3).
Table 2 Changes in some biochemical and immunological parameters of
Acipenser persicus fed
Lactococcus lactis (JF831150) for 56
days
Alternative complement activity (U mL-1)
Lactate dehydrogenase (IU mL-1
Alanine aminotransferase (IU mL-1)
Aspartate aminotransferase (IU mL-1)
Basal diet without bacteria(Control), basal diet containing 106 CFUg-1
Lactococcus lactis (JF831150) (T1), basal diet containing 107 CFUg-1
Lactococcus lactis (JF831150) (T2) and basal diet containing 108 CFUg-1
Lactococcus lactis (JF831150) (T3).
MCH, NEU and EOS were obtained in T3, while
tained in T1 (1.11). The CF and HSI of the experi-
the lowest levels were obtained in control (P<0.05).
mental groups were not significantly different from
Moreover, the MCV and LYM levels were signifi-
the control. Also, the highest SGR was obtained in
cantly decreased in T3, while the highest levels
T3 (1.46), while the lowest one was obtained in T1
were obtained in control (Table 1).
(1.28) (P < 0.05). The highest PER was obtained in
The total protein, LDH, IgM, ALT, AST, and glu-
T3 (0.48), while the lowest one was obtained in T1
cose of the experimental groups were not signifi-
(0.42) (P < 0.05). In addition, the highest FE was
cantly different from the control. Also, lysozyme,
obtained in T3 (103), while the lowest one was ob-
and ACH50 increased significantly in groups com-
tained in T1 (89.92) (P<0.05) (Table 3).
pared to control one (Table 2).
The highest moisture was obtained in T2, while the lowest one was obtained in the control (P<0.05).
Growth performance of fish
The crude protein content was significantly higher
The growth performance of fish fed with 3 levels
in control than experimental groups. The highest to-
of
L. lactis is shown in Table 4. The highest growth
tal lipid was obtained in T2, while the lowest one
rate was obtained in T3, while the lowest one was
was obtained in control. Meanwhile, the lowest and
obtained in T1 (P<0.05). The best FCR was ob-
the highest ash-content were significantly obtained
tained in T3 (0.96), while the highest one was ob-
in the control and T1, respectively (Table 4).
M Soltani et al., LAB in Persian sturgeon (Acipenser persicus)
Table 3 Growth performance, protein efficiency ratio, hepatosomatic index, condition factor, food conversion ratio, and feed efficiency
of
Acipenser persicus fed
Lactococcus lactis (JF831150) for 56 days
Initial weight (g)
Initial body weight (%)
Feed Conversion Ratio
Hepatosomatic Index
Specific growth rate (% day -1)
Protein efficiency ration (%)
Feed efficiency 101.0±0.38b
Basal diet without bacteria (Control), basal diet containing 106 CFUg-1
Lactococcus lactis (JF831150) (T1), basal diet containing 107
CFUg-1
Lactococcus lactis (JF831150) (T2) and basal diet containing 108 CFUg-1
Lactococcus lactis (JF831150) (T3).
Table 4 Body proximate composition after 8 weeks feeding of
Acipenser persicus fed containing
Lactococcus lactis (JF831150)
Composition (g kg-1)
Basal diet without bacteria(Control), basal diet containing 106 CFUg-1
Lactococcus lactis (JF831150) (T1), basal diet containing 107 CFUg-1
Lactococcus lactis (JF831150) (T2) and basal diet containing 108 CFUg-1
Lactococcus lactis (JF831150) (T3).
a maximum inhibitory activity to
A. hydrophila at
20-30˚C indicating an optimum temperature for the production of the highest ECPs. However,
L. lactis
The in vitro growth of LAB at 20-30˚C together
showed the highest antimicrobial activity against
A.
with their resistance to acidity and alkaline condi-
hydrophila similar to the results obtained by Balca-
tions is correlated to the natural environmental con-
zar et al. (2008) who demonstrated a strong inhibi-
dition of the fish intestine suggesting the isolated
tory activity by
L. lactis CLFP 101 against both
A.
LAB are the representatives of the bacterial flora
hydrophila and
A. salmonicida. As the best inhib-
that are resident in the intestine of Persian sturgeon.
itory activity due to
L. lactis occurred at optimum
For instance, the in vitro ability of some LAB in-
physiological temperature of
A. hydrophila then it is
cluding
E. faecalis,
P. pentosaceus, and
W. cibaria
possible to recommend
L. lactis as a suitable poten-
to grow at low pH of 3.7-4.5 is similar to the fish
tial probiotic against motile
Aeromonas septicemia
intestine condition that is an acidic environment.
caused by
A. hydrophila in Persian sturgeon (Soltani
However, these results showed that all of isolat-
& Kalbassi 2001). Such anti-
A. hydrophila may be
ed LAB had the best growth in almost neutral pH
in part due to production of organic acids, hydrogen
condition which is preferable for almost all LAB.
peroxide, carbon dioxide, acetic acid, bacteriocins,
Similar results have been reported by Holt, Krieg,
diacetyl, acetaldehyde, ethanol, and low molecular
Staley & Willams (1994) and Balcazar et. al (2008)
weight antimicrobial compounds e.g reuterin from
who assessed the environmental responses of some
some LAB (Balcazar, Vendrell, Blas, Ruiz-Zarzu-
LAB such as
E. faecalis,
L. lactis,
L. garviae and
P.
ela, Gironés & Múzquiz 2007; Lee & Salminen
pentosaceus in the in vitro condition.
2009). In addition, all examined LAB were able
The results of present study also showed that the ex-
to keep their anti-
A. hydrophila activities at pH 7
tracelluar products of most of isolated LAB showed
to 9, a property that may be a benefit tool to pass
Iranian Journal of Aquatic Animal Health
the gastrointestinal tract of fish. Such a character is
licheniformis increase protein and decrease lipid
an important factor for a bacterial strain to become
contents (El-Haroun et al. 2006). Moreover, Merri-
a suitable probiotic because the high rate of its vi-
field et al. (2009 a,b) also reported that commercial
ability and its capacity of colonization in the fish
probiotics such as B. subtilis, B. licheniformis, and
intestine is necessary (Goktepe, Juneja & Ahmedna
Enterococcus faecium had no effect on carcass fac-
2006; Lee & Salminen 2009).
tors. Variation in lipid and protein contents in fish
A number of probiotics have been incorporated into
could be due to their synthesis and stock in muscles
aquatic animal feeds to increase the growth perfor-
(Abdel-Tawwab, Khattab, Ahmad & Shalaby 2006).
mances (Ghosh, Sen, & Ray 2003; Son, Chang, Wu,
Improvement of immunity using dietary enriched
Guu, Chi & Cheng 2009; Merrifield et al. 2009a,b;
probiotic could be attributed to the fish species, ge-
Abd El-Rhman, Khattab, & Shalaby 2009; Askarian
netic, difference in consumption time and quantity
et al. 2011).
of probiotics supplementation diet, and probiotic
Manipulation of intestinal microflora via probiot-
origins (Nikoskelainen, Ouwehand, Bylund, Salm-
ics plays an important mechanism for increase of
inen & Lilius 2003; Panigrahi, Kiron, Puangkaew,
growth performances and survival (Vendrell, Bal-
Kobayashi, Satoh & Sugita 2005; Salinas, Cuesta,
cazar, Blas, Ruiz-Zarzuela, Girones & Muzquiz
Esteban. & Meseguer 2005; Kim & Austin 2006;
2008). However, probiotics are also effectively
Pieters, Brunt, Austin & Lyndon 2008; Son et al.
important of feed with detoxification and produc-
2009). The present study revealed that administra-
tion of some hydrolytic enzymes such as amylase,
tion of probiotic in diets significantly enhanced the
protease and some vitamins like biotin as well as
WBC, RBC, haemoglobin, MCH, neutrophils and
vitamin B12 (El-Haroun, Goda & Chowdhury
eosinophils. Immunocompetent cells are important
2006). In the present study, after 8 weeks adminis-
for assessment of fish health and their activation and
tration of the supplemented diets had a significant
proliferation is stimulated by probiotics enriched di-
increase in final weight, FCR, SGR, PER, and FE
ets (Irianto & Austin 2002; Brunt & Austin 2005).
of Persian sturgeon. This result is in agreement with
Leukocytes are the sources of lysozymes produc-
Askarian et al. (2011) after feeding Persian sturgeon
tion (Akrami Ghelichi & Ahmadifar 2011), and in
(
Acipenser persicus) and Beluga (
Huso huso) with
this study a significant increase in WBC population
Chironomidae incorporated with Lactobacillus cur-
was correlated with the enhancement of lysozyme
vatus and Leuconostoc mesenteroides for 50 days.
level in fish sera. The present study also indicates
Mechanisms of the improvement of growth perfor-
that probiotics diet could decrease the Haematocrit
mances have not completely clear but production of
levels (%PCV) similar results seen Abd El-Rhman
some vitamins like vitamin k, and B12 (Martens,
et al. (2009) who feed Nile tilapia with
Micrococcus
Barg, Warren & Jahn 2002) as well as extracellu-
luteus and
Pseudomonas species as probiotics for
lar enzymes such as esterase, protease, and amylase
90 days. Also, in this study, alternative complement
(Azokpota, Hounhouigan, Nago & Jakobsen 2006)
activity (ACH50) was enhanced significantly in fish
could have important role. Administration of probi-
fed with the probiotic supplementation diet after 8
otics enriched diets helps to improve feed utility and
weeks. Similar results were seen in works reported
digestion of proteins, as well as increase the digest-
by Panigrahi, Kiron, Kobayshi, Puangkaew, Satoh&
ibility of feed resulting in increase of growth and FE
Sugita (2004); Son et al. (2009) ; Harikrishnan et al.
(Lara-Flores, Olvera-Novoa, Guzma´n-Me´ndez &
(2011) and Geng et al. (2011) used some probiotics
Lo´pez-Madrid 2003). The results presented in this
in the diets of rainbow trout (
Oncorhynchus mykiss),
study revealed a significant increase in the lipid con-
grouper (
Epinephelus coioides), rock bream (
Ople-
tent compare to control. On the contrary, in Nile tila-
gnathus fasciatus), cobia (Rachycentron canadum)
pia,
Oreochromis niloticus (L.), fed with commercial
and tilapia (
Oreochromis niloticus).
probiotics including Bacillus subtilis and Bacillus
An increase in complement components in treated
M Soltani et al., LAB in Persian sturgeon (Acipenser persicus)
fish sera is because of an increase in WBC popu-
aby A.M.E.(2006) Compensatory growth, feed utilization,
lation as observed in this study. Also, an increase
whole body composition and hematological changes in
in level of total IgM has been seen in the treated
starved juvenile Nile tilapia,
Oreochromis niloticus (L).
fish compared to control one (P>0.05) indicating
Journal of Applied Aquaculture 18, 17–36.
of stimulating of lymphocyte population for IgM production as already reported by other researchers
Akrami R., Abdolmajid H., Abbas M. & Abdolmoham-
using some teleost fish (Salinas Abelli, Bertoni, Pic-
mad A.K.(2009) Effect of dietary prebiotic inulin on
chietti, Roque, Furones, Cuesta, Meseguer & Este-
growth performance, intestinal microflora, body compo-
ban 2008; Sun, Yang, Ma & Lin 2010).
sition and hematological parameters of juvenile beluga,
Huso huso (Linnaeus, 1758).
Journal of the World Aqua-
culture Society 40, 771–779.
In conclusion, the in vitro environmental responses
Akrami R., Ghelichi A. & Ahmadifar E. (2011) Effect of
of LAB recovered from the intestine of Persian stur-
dietary prebiotic inulin on hematological and biochem-
geon are in correlation with the physiological condi-
ical parameters of cultured juvenile Beluga(
Huso huso).
tions of fish gastrointestinal tract making it possible
Journal of Veterinary Research 66(2), 131-136.
to use some of these LABs such as
L. lactis as a po-tential probiotic against
A. hydrophila septicemia.
Aly S.M., Ahmed YA-G., Ghareeb AA-A. & Mohamed
However, examination of the pathogenicity of these
M.F. (2008a) Studies on Bacillus subtilis and Lactobacil-
LAB bacterial species as probiotic candidates is re-
lus acidophilus, as potential probiotics, on the immune
quired prior to judging on their probiotic activity in
response and resistance of Tilapia nilotica (
Oreochromis
fish. This is particularly true in case of
L. garvieae
niloticus) to challenge infections.
Fish and Shellfish Immu-
that has become a universal pathogen for many fish
nology 25, 128-136.
species under different environmental conditions. Also, the results of in vitro and in vivo works here
Aly S.M., Mohamed M.F. & John G. (2008b) Effect of pro-
in this study clearly show that supplementation of
biotics on the survival, growth and challenge infection in
Persian sturgeon feed with
L. lactis as a native pro-
Tilapia nilotica (
Oreochromis niloticus).
Aquaculture Re-
biotic is able to enhance both fish growth perfor-
search 39, 647-656.
mances and some immunophysiological responses.
AOAC (1995) Official methods of analysis of AOAC In-
ternational, 16th edn. AOAC International, Arlington,
This work was funded by the grant of research coun-cil of the University of Tehran, Center of Excellence
Askarian F., Kousha A., Salma W. & Ringø E. (2011)The
of Aquatic Animal Health, University of Tehran, In-
effect of lactic acid bacteria administration on growth,
ternational Sturgeon Research Institute and Iranian
digestive enzyme activity and gut microbiota in Persian
Fisheries Science Research Institute.
sturgeon (
Acipenser persicus) and beluga(
Huso huso) fry.
Aquaculture Nutrition 17, 488-497.
Abd El-Rhman A.M., Khattab Y.A.E. & Shalaby A.M.E.
Azokpota P., Hounhouigan D.J., Nago M.C. & Jakobsen
(2009)
Micrococcus luteus and
Pseudomonas species as
M. (2006) Esterase and protease activities of Bacillus
probiotics for promoting the growth performance and
spp. from afitin, iru and sonru; three African locust bean
health of Nile tilapia,
Oreochromis niloticus.
Fish and
(
Parkia biglobosa) condiments from Benin.
African Jour-
Shellfish Immunology 27, 175–180.
nal of Biotechnology 5, 265–272.
Abdel-Tawwab M., Khattab Y.A.E., Ahmad M.H. & Shal-
Iranian Journal of Aquatic Animal Health
Balcázar J.L., Vendrell D., Blas I., Ruiz-Zarzuela I.,
and Shellfish Immunology 31, 400-406.
Múzquiz J.L. & Gironés O.(2008) Characterization of
probiotic properties of lactic acid bacteria isolated from
Ghosh K., Sen S.K. & Ray A.K. (2003) Supplementation
intestinal microbiota of fish.
Aquaculture 278, 188–191.
of an isolated fish gut bacterium, Bacillus circulans, in
formulated diets for rohu, Labeo rohita, fingerlings.
Israeli
Balcázar J.L., Vendrell D., Blas I., Ruiz-Zarzuela I., Gi-
Journal of Aquaculture-Bamidgeh 55, 13–21.
ronés O. & Múzquiz J.L.(2007) In vitro competitive adhe-
sion and production of antagonistic compounds by lactic
Goktepe I., Juneja V.K. & Ahmedna M. (2006) Probiotics
acid bacteria against fish pathogens.
Veterinary Microbiol-
in food safety and human health. CRC press, Taylor and
ogy 122, 373–380.
Francis Group, USA.
Bello B.D., Cocolin L., Zeppa G., Field D., Cotter P.D.
Harikrishnan R., Kim M., Kim J., Balasundaram C. &
& Hill C.(2012)Technological characterization of bacte-
Heo M. (2011a) Protective effect of herbal and probiotics
riocin producing
Lactococcus lactis strains employed to
enriched diet on haematological and immunity status of
control Listeria monocytogenes in Cottage cheese.
Inter-
Oplegnathus fasciatus (Temminck & Schlegel) against Ed-
national Journal of Food Microbiology 153, 58–65.
wardsiella tarda.
Fish and Shellfish Immunology 30, 886-
Brunt J. & Austin B. (2005) Use of a probiotic to control
Holt J. G., Krieg N.R., Staley J.T. & Willams S.T. (1994)
lactococcosis and streptococcosis in rainbow trout,
On-
Bergeys manual of determinative bacteriology, 9th edn.
corhynchus mykiss (Walbaum).
Journal of Fish Disease 28,
Willams and Wilkins Puble.
Hoseinifar S.H., Mirvaghefi A. & Merrifield D.L. (2011c)
Casla D., Requena T. & Gómez R. (1996) Antimicrobial
The effects of dietary inactive brewer's yeast Saccharomy-
activity of lactic acid bacteria isolated from goat's milk
ces cerevisiae var. ellipsoideus on the growth, physiologi-
and artisanal cheeses: characteristics of a bacteriocin pro-
cal responses and gut microbiota of juvenile beluga (
Huso
duced by Lactobacillus curvatus IFPL105.
Journal of Ap-
huso).
Aquaculture 318, 90–94.
plied Bacteriology 81, 35–41.
Hoseinifar S.H., Mirvaghefi A., Merrifield D.L., Mojazi
EL-Haroun E.R., Goda A. M. & Chowdhury M.A.K.
Amiri B., Yelghi S. & Darvish Bastami K.( 2011a) The
(2006) Effect of dietary probiotic Biogens supplementa-
study of some haematological and serum biochemical pa-
tion as a growth promoter on growth performance and
rameters of juvenile beluga (
Huso huso) fed oligofructose.
feed utilization of Nile tilapia
Oreochromis niloticus (L.).
Fish Physiology and Biochemistry 37, 91-96.
Aquacultre Research 37, 1473-1480.
Hoseinifar S.H., Mirvaghefi A., Mojazi Amiri B., Khosh-
Falahatkar B., Soltani M., Abtahi B., Kalbassi M.R. &
bavar Rostami H. & Merrifield D.L.( 2011b)The effects
Pourkazemi M. (2006) Effects of dietary vitamin C sup-
of oligofructose on growth performance, survival and au-
plementation on performance, tissue chemical composi-
tochthonous intestinal microbiota of beluga (
Huso huso)
tion and alkaline phosphatase activity in great sturgeon
juveniles.
Aquacultre Nutrition 17, 498–504.
(
Huso huso).
Journal of Applied Ichthyology 22, 283–286.
Irianto A. & Austin B. (2002) Probiotics in aquaculture.
Geng X., Dong X., Tan B., Yang Q., Chi S., Liu H. & Liu
Journal of Fish Disease 25, 633–642.
X. (2011) Effects of dietary chitosan and Bacillus subtilis
on the growth performance, non-specific immunity and
Jafaryan H., Taati M.M. & Makhtoumi N.M. (2010) The
disease resistance of cobia, Rachycentron canadum.
Fish
effects of probiotic bacillus for promotion of growth and
M Soltani et al., LAB in Persian sturgeon (Acipenser persicus)
feeding parameters in beluga (
Huso huso) larvae via feed-
ing by bioencapsulated Artemia.
Aquaculture, Aquarium,
Meng Y., Xiao H.B. & Zeng L.B. (2011) Isolation and
Conservation & Legislation 3(4), 273–280.
identification of the hemorrhagic septicemia pathogen
from Amur sturgeon, Acipenser schrenckii.
Journal of
Jalali M.A., Ahmadifar E., Sudagar M. & Takami G.A.
Applied Ichthyology 27, 799–803.
(2009) Growth efficiency, body composition, survival and
haematological changes in great sturgeon (
Huso huso Lin-
Merrifield D.L., Bradley G., Baker R.T.M. & Davies S.J.
naeus, 1758) juveniles fed diets supplemented with differ-
(2009b) Probiotic applications for rainbow trout (
Onco-
ent levels of Ergosan.
Aquaculture Research 40, 804–809.
rhynchus mykiss Walbaum) II. Effects on growth perfor-
mance, feed utilization, intestinal microbiota and related
Khoshbavar-Rostami H.A., Soltani M. & Hassan H.M.D.
health criteria postantibiotic treatment.
Aquaculture Nu-
(2006) Immune response of great sturgeon (
Huso huso)
trition 16, 496–503.
subjected to long-term exposure to sublethal concentra-
tion of the organophosphate, diazinon.
Aquaculture 256,
Merrifield D.L., Dimitroglou A., Bradley G., Baker R.T.M.
& Davies S.J. (2009a) Probiotic applications for rainbow
trout (
Oncorhynchus mykiss Walbaum) I. Effects on
Khoshbavar-Rostami H.A., Soltani M. & Hassan M.D.
growth performance, feed utilization, intestinal microbi-
(2007) Immune responses of great Sturgeon (
Huso huso)
ota and related health criteria.
Aquaculture Nutrition 16,
to
Aeromonas hydrophila.
Journal of Fish Biology 70(6),
Nikoskelainen S., Ouwehand A.C., Bylund G., Salminen
Kim D. & Austin B. (2006) Innate immune responses in
S. & Lilius E.M. (2003) Immune enhancement in rainbow
rainbow trout (
Oncorhynchus mykiss, Walbaum) induced
trout (
Oncorhynchus mykiss) by potential probiotic bacte-
by probiotics.
Fish and Shellfish Immunology 21, 513-524.
ria (
Lactobacillus rhamnosus).
Fish and Shellfish Immunol-
ogy 15, 443-452.
Lara-Flores M., Olvera-Novoa M.A., Guzma´n-Me´ndez
Oidtmann B.C., Thrush M.A., Denham K.L. & Peeler
B.E. and Lo´pez-Madrid W. (2003) Use of the bacteria
E.J. (2011) Review. International and national biosecuri-
Streptococcus faecium and Lactobacillus acidophilus, and
ty strategies in aquatic animal health.
Aquaculture 320,
the yeast Saccharomyces cerevisiae as growth promoters
in Nile tilapia (
Oreochromis niloticus).
Aquaculture 216,
Panigrahi A., Kiron V., Puangkaew J., Kobayashi T., Satoh
S. & Sugita H. (2005) The viability of probiotic bacteria
Lee Y.K., & Salminen S.( 2009) Handbook of probiotics
as a factor influencing the immune response in rainbow
and prebiotics (second edition). John Wiley and Sons,
trout
Oncorhynchus mykiss.
Aquaculture 243, 241-254.
Inc., Hoboken, New Jersey.
Panigrahi A., Kiron V., Kobayshi T., Puangkaew J., Satoh
Martens J.H., Barg H., Warren M.J. & Jahn D. (2002) Mi-
S. & Sugita H. (2004) Immune responses in rainbow trout
crobial production of vitamin B-12.
Applied Microbiology
Oncorhynchus mykiss induced by a potential probiotics
and Biotechnology 58, 275–285.
bacteria Lactobacillus rhamnosus JCM 1136.
Veterinary
Immunology and Immunopathology 102, 379–388.
Matsuyama H., Tanaka K., Nakao M. & Yano T. (1988)
Characterization of the alternative complement pathway
Pieters N., Brunt J., Austin B. & Lyndon A.R. (2008) Ef-
of Carp.
Developmental and Comparative Immunology 12,
ficacy of in-feed probiotics against
Aeromonas bestiarum
and Ichthyophthirius multifiliis skin infections in rain-
Iranian Journal of Aquatic Animal Health
bow trout (
Oncorhynchus mykiss, Walbaum).
Journal of
diversity of lactic acid bacteria in the intestine of Persian
Applied Microbiology 105, 723-732.
sturgeon fingerlings.
Journal of Applied Ichthyology 29(3),
Rawling M.D., Merrifield D.L. & Davies S.J. (2009) Pre-
liminary assessment of dietary supplementation of San-
Son V.M., Chang C., Wu M., Guu Y., Chiu C. & Cheng
grovit on red tilapia (
Oreochromis niloticus) growth per-
W.(2009) Dietary administration of the probiotic, Lac-
formance and health.
Aquaculture 294, 118–122.
tobacillus plantarum, enhanced the growth, innate im-
mune responses, and disease resistance of the grouper
Reddy K.B.P.K. (2007) Effect of drying processes on via-
Epinephelus coioides.
Fish and Shellfish Immunology 26(5),
bility and selected functional properties of probiotic lactic
acid bacteria. PhD thesis, University of Mysore, India.
Sun Y, Yang H, Ma R. & Lin W.(2010) Probiotic applica-
Sahoo P.K., Mahapatra K. D., Saha J.N., Barat A., Sahoo
tions of two dominant gut Bacillus strains with antago-
M., Mohanty B.R., Gjerde B., Ødegard J., Rye M. & Salte
nistic activity improved the growth performance and im-
R. (2008) Family association between immune parameters
mune responses of grouper
Epinephelus coioides.
Fish and
and resistance to
Aeromonas hydrophila infection in the
Shellfish Immunology 29, 803-809.
Indian major carp, Labeo rohita.
Fish and Shellfish Immu-
nology 25, 163-169.
Vendrell D., Balcazar J.L., Blas I., Ruiz-Zarzuela I., Gi-
rones O. & Muzquiz J.L.(2008) Protection of rainbow
Salinas I., Abelli L., Bertoni F., Picchietti S., Roque A.,
trout (
Oncorhynchus mykiss) from lactococcosis by pro-
Furones D., Cuesta A., Meseguer J.& Esteban M.A.(2008)
biotic bacteria.
Comparative Immunology, Microbiology &
Monospecies and multispecies probiotic formulations
Infectious Diseases 31, 337–345.
produce different systemic and local immunostimulatory
effects in the gilthead seabream (
Sparus aurata L.).
Fish
Yang W. & Li A. (2009) Isolation and characterization
and Shellfish Immunology 25, 114-123.
of Streptococcus dysgalactiae from diseased Acipenser
schrenckii.
Aquaculture 294, 14–17.
Salinas I., Cuesta A., Esteban M.A. & Meseguer J. (2005)
Dietary administration of Lactobacillus delbrueckii and
Bacillus subtilis, single or combined, on gilthead seabream
cellular innate immune responses.
Fish and Shellfish Im-
munology 19, 67-77.
Sharifuzzaman S.M. & Austin B. (2009) Influence of pro-
biotic feeding duration on disease resistance and immune
parameters in rainbow trout.
Fish and Shellfish Immunol-
ogy 27, 440–445.
Soltani M. & Kalbassi M.R.(2001)Protection of Persian
sturgeon (
Acipenser persicus) fingerling against
Aero-
monas hydrophila septicemia using three different anti-
gens.
Bulletin of the European Association of Fish Patholo-
gists 21(6), 235 – 240.
Soltani M., Pourkazemi M., Ahmadi M.R., Taherimirg-
head A., Merrifield D.L. & Masouleh A.S. (2013) Genetic
Iranian Journal of Aquatic Animal Health
ﺪﯿﺳا یﺮﺘﻛﺎﺑ ﻚﯿﺗﻮﯿﺑوﺮﭘ هدﺎﻔﺘﺳا و ﯽﻜﯿﺗﻮﯿﺑ ﯽﺘﻧآ ﺖﯿﺳﺎﺴﺣ ،ﯽﯾﺎﯾﺮﺘﻛﺎﺑﺪﺿ ﺖﯿﻟﺎﻌﻓ
(Acipenser persicus) ﯽﻧاﺮﯾا ﯽھﺎﻤﺳﺎﺗ شروﺮﭘ رد ﻚﯿﺘﻛﻻ
1ﺪﺋﺎﻗﺮﯿﻣ ىﺮﻫﺎﻃ ﻰﻠﻋ ،2ﻰﻤﻇﺎﮐرﻮﭘ ﺪﻤﺤﻣ ،1ىﺪﻤﺣا ﺎﺿرﺪﻤﺤﻣ ،2،1ﻪﻟﻮﺳﺎﻣروﺎﻨﺷ ﺎﺿﺮﯿﻠﻋ ،*1ﻰﻧﺎﻄﻠﺳ ىﺪﻬﻣ
ناﺮﻬﺗ هﺎﮕﺸﻧاد نﺎﯾﺰﺑآ ىﺎﻬﯾرﺎﻤﯿﺑ و ﺖﺷاﺪﻬﺑ ﺐﻄﻗ .ناﺮﻬﺗ هﺎﮕﺸﻧاد ﻰﮑﺷﺰﭙﻣاد هﺪﮑﺸﻧاد نﺎﯾﺰﺑآ ىﺎﻬﯾرﺎﻤﯿﺑ و ﺖﺷاﺪﻬﺑ هوﺮﮔ 1
ﺖﺷر ،ىزروﺎﺸﮐ ﺞﯾوﺮﺗ و شزﻮﻣآ ،تﺎﻘﯿﻘﺤﺗ نﺎﻣزﺎﺳ ،رﺰﺧ ىﺎﯾرد نﺎﯿﻫﺎﻤﺳﺎﺗ ﻰﻠﻠﻤﻟا ﻦﯿﺑ تﺎﻘﯿﻘﺤﺗ ﻪﺴﺳﻮﻣ نﺎﯾﺰﺑآ ىﺎﻬﯾرﺎﻤﯿﺑ و ﺖﺷاﺪﻬﺑ ﺶﺨﺑ 2
هﺪﯿﮑﭼ
ﺖﯿﻟﺎﻌﻓ ﻦﯿﻨﭽﻤه .ﺖﻓﺮﮔ مﺎﺠﻧا یرﻮﺷ و ﯽﯾﺎﻣد ، pH توﺎﻔﺘﻣ ﻂﯾاﺮﺷ رد ﯽﻧاﺮﯾا ﯽهﺎﻤﺳﺎﺗ زا ﻩﺪﺷ ﯽﯾﺎﺳﺎﻨﺷ ﮏﯿﺘﮐﻻ ﺪﯿﺳا یﺮﺘﮐﺎﺑ ۵ ﺪﺷر رﺎﺘﻓر ﯽﺑﺎﯾزرا ﺐﻟﺎﻏ یﺎه ﮏﯿﺗﻮﯿﺑ ﯽﺘﻧآ ﻪﺑ ﺖﺒﺴﻧ ﺎﻬﻧآ ﺖﯿﺳﺎﺴﺣ ﺰﯿﻧ و
Aeromonas hydrophilaﻪﯿﻠﻋ ﻩﺪــﺷ ﯽﯾﺎﺳﺎﻨﺷ یﺎه یﺮﺘﮐﺎﺑ ﯽﻟﻮﻠﺳ جرﺎﺧ ﯽﺤــﺷﺮﺗ تﺎﺒﯿﮐﺮﺗ تﺎﻌﻟﺎﻄﻣ .ﺪﯾدﺮﮔ ﻦﯿﯿﻌﺗ ﯽـ ﺷروﺮﭘ ﻂﯾاﺮــﺷ رد ﺰﯿﻧ ﻩزور ۵۶ ﻩرود ﮏﯾ رد ﯽﯾاﺬﻏ ﻞﻤﮑﻣ ﮏﯾ ناﻮﻨﻋ ﻪﺑ
L. lactis ﺮﺛا .ﺪــﺷ ﯽﺑﺎﯾزرا نﺎﯾﺰﺑآ رد فﺮــﺼﻣ درﻮــﻣ ﯽﺤﺷﺮﺗ تﺎﺒﯿﮐﺮﺗ ﺖﯿﻟﺎﻌﻓ ﯽﺑﺎﯾزرا .ﺪﻧراد ﺪﺷر ﺖﯿﻠﺑﺎﻗ ٪ ۴-٨ یرﻮﺷ و داﺮﮔ ﯽﺘﻧﺎﺳ ﻪﺟرد ٢٠-٣٠ ﯽﯾﺎﻣد ﻩدوﺪﺤﻣ رد ﺎه یﺮﺘﮐﺎﺑ ﻦﯾا ﻪﮐ داد نﺎﺸﻧ ﯽهﺎﮕﺸﯾﺎﻣزآ .ﺪﻧرادرﻮﺧﺮﺑ
A. hydrophila ﺎﺑ ﻪﻠﺑﺎﻘﻣ ﯽﯾﺎﻧاﻮﺗ زا داﺮﮔ ﯽﺘﻧﺎــﺳ ﻪﺟرد ٢۵-٣٠ ﯽﯾﺎﻣد ﻪﻨﻣاد رد ﺎه یﺮﺘﮐﺎﺑ ﻦﯾا ﻪﮐ داد نﺎــﺸﻧ ﺎه یﺮﺘﮐﺎﺑ ﻦﯾا ﯽﻟﻮﻠــﺳ جرﺎﺧ ٩ pH رد
A. hydrophila ﻪﯿﻠﻋ
L. lactis و
W. cibaria ،
P. pentosaceus یﺎه یﺮﺘﮐﺎﺑ ﯽﻟﻮﻠــﺳ جرﺎﺧ تﺎﺒﯿﮐﺮﺗ ﯽﺘــﺴﯿﻧﻮﮔﺎﺘﻧآ ﺖﯿﻟﺎﻌﻓ ﻦﯾﺮﺘــﺸﯿﺑ ،لوزﺎﺴﮐﻮﺘﻣﺎﻔﻟﻮﺳ ﻢﯾﺮﭘﻮﺘﻣ یﺮﺗ،ﻦﯿﺴﯾﺎﻣوﺮﺘﯾرا ،ﻦﯿﻠﮑﯾﺎﺳاﺮﺘﺗ ﯽﺴﮐا یﺎه ﮏﯿﺗﻮﯿﺑ ﯽﺘﻧآ ﻪﺑ ﺖﺒﺴﻧ
E. faecalis و
W. cibaria یﺎه یﺮﺘﮐﺎﺑ .ﺖﺳا ﻩدﻮﺑ و ﻦﯿﺳﺎﺴﮐﻮﻠﻓوﺮﻧا ،ﻦﯿﺴﯾﺎﻣوﺮﺘﯾرا ،ﻦﯿﻠﮑﯾﺎﺳاﺮﺘﺗ ﯽﺴﮐا ﻪﺑ ﺖﺒــﺴﻧ
L. lactis یﺮﺘﮐﺎﺑ ﻪﮑﯿﻟﺎﺣرد ﺪﻧا ﻩدﻮﺑ موﺎﻘﻣ ﻦﯿﺋﻮﮑﻣﻮﻠﻓ و ﻞﮑﯿﻨﻓرﻮﻠﻓ ،ﻦﯿــﺳﺎﺴﮐﻮﻠﻓوﺮﻧا ﯽهﺎﻤﺳﺎﺗ ﺖﺷاﺪﻬﺑ و اﺬﻏ ﯽﯾآرﺎﮐ ،ﺪﺷر یﺎه ﺺﺧﺎﺷ دﻮﺒﻬﺑ رد ﺪﻧاﻮﺗ ﯽﻣ
L. lactis فﺮﺼﻣ ﻪﮐ داد نﺎﺸﻧ ﻪﻌﻟﺎﻄﻣ ﻦﯾا ﺞﯾﺎﺘﻧ .داد نﺎﺸﻧ ﺖﯿﺳﺎﺴﺣ ﻞﮑﯿﻨﻓرﻮﻠﻓ
.ﺪﺷﺎﺑ ﺮﺛﺆﻣ ﯽﻟﺎﻤﺘﺣا ﮏﯿﺗﻮﯿﺑوﺮﭘ ﮏﯾ ناﻮﻨﻋ ﻪﺑ ﯽﻧاﺮﯾا
.ﻚﯿﺗﻮﯿﺑوﺮﭘ ،ﺲﯿﺘﮐﻻ سﻮﮐﻮﮐﻮﺘﮐﻻ ،ﺖﺷاﺪﻬﺑ ،یرﺎﯾوﺎﺧ نﺎﯿهﺎﻣ
:یﺪﯿﻠﮐ یﺎه ﻩژاو
Source: http://www.ijaah.ir/files/site1/user_files_f31c7f/shapourkakoolaki-A-10-35-28-17ff59d.pdf
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Non-toxic tumortherapy (NTT) for advanced colorectal cancer with liver metastasis, a pilot study E.Valstar M.D., M. Sc. Stadhouderslaan 30, 2517 HZ The Hague, Holland Eighty-three patients with livermetastases from colorectal cancer and in many cases also metastases elsewhere consulted me in 1988-1997 for non-toxic tumortherapy (NTT). No selection was made. Two regressions during