Enzyme histochemistry of cecal lymphoid tissue during prenatal period of buffalo

Research (Published online: 24-09-2016)

15. Enzyme histochemistry of cecal lymphoid tissue during prenatal period of buffalo - Kritima Kapoor and Opinder Singh

Veterinary World, 9(9): 1006-1011

   doi: 10.14202/vetworld.2016.1006-1011

Abstract

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Aim: This study was designed to elucidate the histoenzymic distribution of enzymes, i.e., phosphatases, oxidoreductases, dehydrogenases, and diaphorases in cecal lymphoid tissue during its development in the prenatal period.

Materials and Methods: The study was conducted on cecum of 15 buffalo fetuses ranging from 16 cm curved crownrump length (CVRL) (100 days) to 100 cm CVRL (full term). The fetuses were categorized into three groups based on their CVRL.

Results: In Group I, the distribution of enzymes was uniformly weak in developing villi-like projections in cecum and completely absent from submucosa. In Group II, the enzymes showed a moderate to strong activity in epithelium lining tunica mucosa which progressively decreased as the fetus progresses toward late gestational age. However, the intense activity of enzymes was observed in developing lymphoid tissue in this group. In Group III, distribution of enzymes reduced in tunica mucosa of cecum with advancing age, whereas the intense activity was noticed in the developed lymphoid tissue complex.

Conclusion: The distribution of enzymes was completely absent from submucosal region in cecum of Group I as there was no lymphoid tissue development at this age. In Group II, the enzymes showed a moderate to strong activity in epithelium lining tunica mucosa which progressively decreased toward late gestational age but an intense activity was observed in developing lymphoid tissue. In Group III, distribution of enzymes reduced in tunica mucosa with advancing age with intense activity noticed in the developed lymphoid tissue complex.

Keywords: buffalo, cecum, histoenzyme, lymphoid tissue, prenatal.

The expression of cyclic adenosine monophosphate responsive element modulator in rat sertoli cells following seminal extract administration

Research (Published online: 23-09-2016)

14. The expression of cyclic adenosine monophosphate responsive element modulator in rat sertoli cells following seminal extract administration - Muslim Akmal, Tongku Nizwan Siregar, Sri Wahyuni, Hamny, Mustafa Kamal Nasution, Wiwik Indriati, Budianto Panjaitan and Dwinna Aliza

Veterinary World, 9(9): 1001-1005

   doi: 10.14202/vetworld.2016.1001-1005

Abstract

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Aim: This study aims to determine the effect of seminal vesicle extract on cyclic adenosine monophosphate responsive element modulator (CREM) expression in rat Sertoli cells.

Materials and Methods: This study examined the expression of CREM on 20 male rats (Rattus norvegicus) at 4 months of age, weighing 250-300 g. The rats were divided into four groups: K0, KP1, KP2, and KP3. K0 group was injected with 0.2 ml normal saline; KP1 was injected with 25 mg cloprostenol (Prostavet C, Virbac S. A); KP2 and KP3 were injected with 0.2 and 0.4 ml seminal vesicle extract, respectively. The treatments were conducted 5 times within 12-day interval. At the end of the study, the rats were euthanized by cervical dislocation; then, the testicles were necropsied and processed for histology observation using immunohistochemistry staining.

Results: CREM expression in rat Sertoli cells was not altered by the administration of either 0.2 or 0.4 ml seminal vesicle extract.

Conclusion: The administration of seminal vesicle extract is unable to increase CREM expression in rat Sertoli cells.

Keywords: cyclic adenosine monophosphate responsive element modulator, seminal vesicle extract, Sertoli cells, spermatogenesis.

Occurrence and characteristics of extended-spectrum β-lactamases producing Escherichia coli in foods of animal origin and human clinical samples in Chhattisgarh, India

Research (Published online: 21-09-2016)

13. Occurrence and characteristics of extended-spectrum β-lactamases producing Escherichia coli in foods of animal origin and human clinical samples in Chhattisgarh, India - Bhoomika, Sanjay Shakya, Anil Patyal and Nitin Eknath Gade

Veterinary World, 9(9): 996-1000

   doi: 10.14202/vetworld.2016.996-1000

Abstract

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Aim: To assess the prevalence of antimicrobial resistance producing extended-spectrum β-lactamases (ESBL) (bla_TEM, bla_SHV, andbla_CTX-M) genes in Escherichia coli isolated from chicken meat, chevon meat, raw milk, and human urine and stool samples collected from tribal districts of Chhattisgarh, viz., Jagdalpur, Dantewada, Kondagaon, and Kanker.

Materials and Methods: A total of 330 samples, comprising 98 chicken meat, 82 chevon meat, 90 raw milk, and 60 human urine and stool samples, were processed for isolation of E. coli. Isolates were confirmed biochemically and further tested against commonly used antibiotics to know their resistant pattern. The resistant isolates were tested for ESBL production by phenotypic method followed by characterization with molecular method using multiplex-polymerase chain reaction technique.

Results: Overall 57.87% (191/330) samples were found positive for E. coli, which include 66.32% (65/98) chicken meat, 46.34% (38/82) chevon meat, 81.11% (73/90) raw milk, and 25% (15/60) human urine and stool samples. Isolates showed the highest resistance against cefotaxime (41.36%) followed by oxytetracycline (34.03%), ampicillin (29.31%), cephalexin (24.60%), cefixime (16.75%), and ceftazidime (13.08%). Phenotypic method detected 10.99% (21/191) isolates as presumptive ESBL producers, however, molecular method detected 3.66% (7/191), 2.09% (4/191), and 0.00% (0/191) prevalence of bla_TEM, bla_CTX-M, and bla_SHV, respectively.

Conclusion: The present study indicates a high prevalence of E. coli in raw chicken meat, chevon meat, and milk due to poor hygienic practices. The antibiotic susceptibility test detected the presence of the resistance pattern against ESBL in E. coli isolated from raw chicken meat, chevon meat, milk, and also in human clinical samples is of great concern. The appearance of E. coli in the human food chain is alarming and requires adaptation of hygienic practices and stipulate use of antibiotics.

Keywords: bla_TEM, bla_SHV, bla_CTX-M, Escherichia coli, extended-spectrum β-lactamases.

Histopathological and immunohistochemical approaches for the diagnosis of Pasteurellosis in swine population of Punjab

Research (Published online: 18-09-2016)

12. Histopathological and immunohistochemical approaches for the diagnosis of Pasteurellosis in swine population of Punjab - Payal Bhat, Nittin Dev Singh, Geeta Devi Leishangthem, Amninder Kaur, Vishal Mahajan, Harmanjit Singh Banga and Rajinder Singh Brar

Veterinary World, 9(9): 989-995

   doi: 10.14202/vetworld.2016.989-995

Abstract

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Aim: Infectious porcine bronchopneumonia, caused by Pasteurella multocida, is a widespread disease of major economic significance. Thus, the aim of the present study was to diagnose swine Pasteurellosis using gross, histopathological, and immunopathological approaches in the swine population of Punjab and to compare the efficacy of immunohistochemical (IHC) techniques with conventional diagnostic techniques.

Materials and Methods: A total of 71 adult swine lung samples showing gross pneumonic changes were collected along with the associated lymph nodes to carry out the study. The collected samples were then processed for histopathological and IHC studies.

Results: Out of the total 71 lung samples, 26 samples were found to be suspected for Pasteurellosis as per the microscopic changes observed, and out of these 26 samples, 16 cases were confirmed to be positive for Pasteurellosis by IHC. Varied macroscopic changes noted in lungs were pneumonic patches with consolidation of many lobes, congestion, and focal hemorrhages. Main lesions associated with lymph nodes were its enlargement and hemorrhages. Histologically, the lung showed fibrinous and suppurative bronchopneumonia, multifocal suppuration, thickening of septa with fibrin combined with cellular infiltration and edema. The higher IHC expression of P. multocida was seen in the bronchial epithelium besides in alveolar and bronchial exudate. Moreover, on comparing the histopathological and IHC scores which were calculated on the basis of characteristic microscopic lesions and number of antigen positive cells, respectively, a significant positive correlation (r=0.4234) was found.

Conclusion: It was concluded that swine population of Punjab is having P. multocida infection. The gross and histopathological lesions can be helpful in the preliminary diagnosis of Pasteurellosis but needs to be supplemented by other immunodiagnostic tests. Moreover, IHC technique proved to be a specific, reliable, precise, and rapid technique to supplement these conventional methods of diagnosis for Pasteurellosis.

Keywords: histopathology, immunohistochemical, Pasteurellosis, scoring.

Differential response of immune-related genes to peptidoglycan and lipoteichoic acid challenge in vitro

Research (Published online: 17-09-2016)

11. Differential response of immune-related genes to peptidoglycan and lipoteichoic acid challenge in vitro - Sourabh Sulabh, Bharat Bhushan, Manjit Panigrahi, Ankita Verma, Naseer Ahmad Baba and Pushpendra Kumar

Veterinary World, 9(9): 983-988

   doi: 10.14202/vetworld.2016.983-988

Abstract

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Aim: To study the effect of Staphylococcus aureus cell wall antigens, peptidoglycan (PGN) and lipoteichoic acid (LTA) challenge on immune cells present in bovine peripheral blood mononuclear cells (PBMCs).

Materials and Methods: In this study, efforts have been made to investigate the effects of three combinations (10+10, 20+20 and 30+30 μg/ml) of PGN and LTA obtained from S. aureus. These antigens were used to challenge the bovine PBMCs. After 6 h of incubation quantitative, real time-polymerase chain reaction was used to study toll-like receptor 2 (TLR-2) and major cytokine mRNA expression in bovine PBMC challenged with three different antigen blends.

Results: The results indicated that mRNA level of interferon gamma is influenced by the expression of TLR-2 gene. Tumor necrosis factor-alpha (TNF-a), interleukin 10 (IL-10), and IL-8 genes showed a maximum response at a dose of 10 μg of PGN and 10 μg of LTA challenge per ml of culture medium. The outcome also suggests that both IL-10 and IL-8 followed the expression pattern of TNF-a.

Conclusion: A dose of 10 μg of PGN and 10 μg of LTA per ml of culture medium was found to be most suitable for challenging PBMC.

Keywords: expression, lipoteichoic acid, mastitis, peptidoglycan, peripheral blood mononuclear cell.

Prevalence and antibiotic susceptibility of Salmonella spp. from water sources in Tamale, Ghana

Research (Published online: 16-09-2016)

5. Prevalence and antibiotic susceptibility of Salmonella spp. from water sources in Tamale, Ghana - Frederick Adzitey, Charles Kwaku Nunana Ashiagbor and Haruna Abu

International Journal of One Health, 2: 24-28

  doi: 10.14202/IJOH.2016.24-28

Abstract

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Aim: This study investigated the prevalence and antibiotic resistance of Salmonella species isolated from drinking water sources in Tamale Metropolis.

Materials and Methods: Isolation of Salmonella species from 275 different drinking water samples (25 each from dam, well, rain, and bottle, 35 from tap, 40 from water trough, and 100 from sachet) was done using a slightly modified method of the Bacteriological Analytical Manual of the Food and Drugs Administration, USA. 34 Salmonella species isolated from the water samples were examined for their susceptibility to nine different antibiotics using the disc diffusion method. The study was carried out from July 2014 to January 2015.

Results: The overall prevalence of Salmonella species was 4.36% (12/275). Dam 16.00% (4/25) and well 16.00% (4/25) water samples were the most contaminated source, followed by rain water (stored) 12.00% (3/25) and tap water samples 2.86% (1/35). There were no significant differences among water samples which were positive for Salmonella species (p>0.05); however, dam and well samples that were positive forSalmonella species differ significantly (p<0.05) from bottle water, sachet water, and water trough samples, which were negative for Salmonella species. The 34 Salmonella isolates were highly resistant to erythromycin (E) (100%) and vancomycin (VA) (94.12%). Few isolates exhibited intermediate resistances to ceftriaxone (CRO) (17.65%), gentamicin (CN) (17.65%), tetracycline (14.71%), chloramphenicol (C) (5.88%), ciprofloxacin (CIP) (2.94%), and amoxicillin (AMC) (2.94%). Salmonella isolates also exhibited six different antibiotic resistant patterns (VA-E, VA-E-AMC, VA-E-CRO, VA-E-C, VA-E-CRO-AMC, and VA-E-AMC-CN). The resistant pattern VA-E (with multiple antibiotic resistance index of 0.22) was the commonest.

Conclusion: This study indicated that some drinking water sources for humans and animals in Tamale Metropolis are contaminated with Salmonella species which exhibited varying resistance to various antibiotics. Therefore, consumers of water at the Tamale Metropolis are at risk of Salmonella infection from drinking water from positive water sources in the Tamale Metropolis.

Keywords: antibiotics, drinking water, public health, Salmonella species.

Cardiac biomarkers and ultrasonography as tools in prediction and diagnosis of traumatic pericarditis in Egyptian buffaloes

Research (Published online: 16-09-2016)

10. Cardiac biomarkers and ultrasonography as tools in prediction and diagnosis of traumatic pericarditis in Egyptian buffaloes - Noura E. Attia

Veterinary World, 9(9): 976-982

   doi: 10.14202/vetworld.2016.976-982

Abstract

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Aim: This study was designed to evaluate the cardiac biomarkers and ultrasonography in prediction and early diagnosis of traumatic pericarditis (TP) in Egyptian buffaloes.

Materials and Methods: A total number of 47 buffaloes were included in the study and divided into two groups: Healthy (n=10) and diseased groups (n=37). Diseased buffaloes were admitted to the Veterinary Teaching Hospital at Zagazig University, Egypt, with a history of anorexia, sudden, and severe reduction of milk production with no response to a previous medical treatment some animals had edema at the dewlap and congestion of the jugulars. These animals were subjected to clinical examination, evaluation by hemato-biochemical analysis including cardiac biomarkers and sonography.

Results: The hemato-biochemical analysis revealed leukocytosis with a shift to left and hyperfibrinogenemia (indicating inflammation). Serum cardiac biomarkers including cardiac troponin I (cTnI), cTnT, nitric oxide, creatine kinase myocardial band, and lactic dehydrogenase enzyme were significantly increased in buffaloes with TP compared with control ones. Ultrasonographically, there were hypoechoic materials with echogenic fibrin interspersed in between the pericardial sac.

Conclusions: The cardiac biomarkers may be considered a useful index in the early diagnosis of TP. Moreover, ultrasonography is an excellent tool for early prediction and diagnosis of such condition.

Keywords: buffaloes, cardiac biomarkers, diagnosis, traumatic pericarditis, ultrasonography.