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Molecular analysis of Pasteurella multocida strains isolated from fowl cholera infection in backyard chickens

Asian Pacific Journal of Tropical Biomedicine 2014年第1期4卷 8-12页

作者： Mohamed-Wael Abdelazeem Mohamed Moemen Abdel Azeem Mohamed Abdel Mageed Department of Microbiology Faculty of Veterinary medicineSouth Valley University Department of Poultry Diseases Faculty of Veterinary MedicineAssiut University

Objective:To characterize Pasteurella isolated from backyard chickens using whole cell protein lysate profiles and random amplified polymorphic DNA(RAPD)techniques to show their genetic relationship because Pasteurclla multocida(P.multocida)is an important cause of fatal infections in backyard chickens.Methods:Twenty one P.multocida isolates were recovered previously from clinical cases of fowl cholera belonging to individual owners and phenotypically analysed using biochemical tests and serotyping were used far the genetic characterization.Results:Phylogenetic study based on both methods revealed that the recovered population of P.multocida isolated from backyard chickens differs markedly,constituting a well-separated cluster and appearance of 3 distinguishing lineages with greater discrimination shown by RAPDPCR that resulted in two suclusters in cluster A and three subclusters in cluster B and were related greatly with capsular serogroups for the examined strains.The whole cell protein revealed the presence of dominant protein bands at approximately 41 and 61 kDa in all of the examined isolates that may be a virulent proteins share in the increasing of its pathogenicity.Clear distinctive bands ranged from 123 to 1534 bp.Conclusions:Based on the previous findings,there are three spreading clusters that may indicate the association of a small number of P.multocida variants with the majority of cases suggesting that certain clones of P.multocida are able to colonue the examined backyard chickens.Also,the ease and rapidity of RAPD-PCR support the use of this technique as alternative to the more labour-intensive SDS-PACE system for strain differentiation and epidemiological studies of avian P.multocida.Further application of RAPD technology to the examination of avian cholera outbreaks in commercially available flocks may facilitate more effective management of this disease by providing the potential to investigate correlations of P.multocida genotypes,to identify affiliations between bird types and bacterial genot

关键词： Pasteurella multocida Chickens Variation Molecular characterization

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Enzyme-Linked Immunosorbent Assay for Pasteurella Multocida in Rabbits and Serotypes of the Isolates

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中国医科大学学报 1989年第S2期18卷 60-66页

作者：戴显声 Dale L.Brooks Laboratory Animal Centre China Medical University Animal Resources Service University of California Davis USA

The control and prevention of pasteurellosis in rabbits which makes the hosts unsuitable for experimental use raised the needs to improve and simplify the procedures of Enzyme-Linked Immunosorbent Assay (ELISA) for detect of antibody against P.multocida. A comparison on the sensitivity and specificity of bacterial culture of antemortem and postmortem samples, complement fixation test and enzyme-linked immunosorbent assay of 11 apparently healthy adult rabbits was conducted. The incidence rates showed 45.45%,54.54% and 72.73% respectively. The sensitivity for the three methods were 0.63, 0.67,and 1.00,and specificity for them were 1.00, 0.67 and 1.00 respectively. Somatic serotypes of isolates of P.multocida from rabbits of three groups (rabbits of group 2 were with clinic signs, those of groups 1 and 3 were apparently healthy) revealed no remarkable differences,and the predominant types were type 3 and type 3, 4. This was somewhat different from the reports derived from other states. As the antigen of different serotype used in ELISA may have different sensitivity and specificity, which is affected also by different preparation method, a type non-specific antigen should be selected to meet such request. The trial of accomplishment of ELISA without positive and negative controls was presented for discussion.

关键词： Pasteurella multocida serotype specificity apparently accomplishment postmortem somewhat immunosorbent complement

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Deadly case of Pasteurella multocida aortitis and mycotic aneurysm following a cat bite

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World Journal of Clinical Cases 2016年第6期4卷 142-145页

作者： Dennis Dane Cho Yaniv Berliner David Carr Division of Emergency Medicine Department of Medicine University of Toronto Department of Emergency Medicine University Health Network

Animal bites are frequently encountered in the emergency department(ED). Aortitis leading to mycotic abdominal aortic aneurysm is a rare and potentially deadly complication of Pasteurella multocida(P. multocida) following an animal bite. We present the case of a 68-year-old male who presented to the ED after falling at home. He complained of weakness and abdominal pain. He was in septic shock and was treated empirically with broad-spectrum antibiotics and intravenous fluids. He reported previous antibiotic treatment of a cellulitis secondary to a cat bite injury to his right thumb four weeks prior. Abdominal ultrasound and subsequent computed tomography scan revealed a leaking mycotic abdominal aneurysm that was surgically repaired. Blood cultures and aortic wall tissue cultures grew P. multocida. Given how common animal bite presentations are in the ED, this case highlights the need to consider aortitis and mycotic abdominal aortic aneurysm in an unwell patient with an animal bite.

关键词： Mycotic aneurysm Emergency department Cat bite Pasteurella multocida Aortitis

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Structural and functional evidence for two separate oligosaccharide binding sites of Pasteurella multocida hyaluronan synthase

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Advances in Enzyme Research 2013年第4期1卷 97-111页

作者： Floor K. Kooy Hendrik H. Beeftink Michel H. M. Eppink Johannes Tramper Gerrit Eggink Carmen G. Boeriu Bioprocess Engineering Wageningen University and Research Center Wageningen The Netherlands Food and Biobased Research Wageningen University and Research Center Wageningen The Netherlands

Pasteurella multocida hyaluronan synthase (PmHAS) is a bi-functional glycosyltransferase, containing a β1,3-glucuronyltransferase and β1,4-N-acetylglucosaminetransferase domain. PmHAS catalyzes the elongation of hyaluronan (HA) through the sequential addition of single monosaccharides to the non-reducing end of the hyaluronan chain. Research is focused on the relation between the length of the HA oligosaccharide and the single-step elongation kinetics from HA4 up to HA9. It was found that the turnover number kcat increased with length to maximum values of 11 and 14 s-1 for NAc- and UA-transfer, respectively. Interestingly, the specificity constant kcat/KM increased with polymer length from HA5 to HA7 to a value of 44 mM-1s-1, indicating an oligosaccharide binding site with increasing specificity towards a heptasaccharide at the UA domain. The value of kcat/KM remained moderately constant around 8 mM-1s-1 for HA4, HA6, and HA8, indicating a binding site with significantly lower binding specificity at the NAc domain than at the UA domain. These findings are further corroborated by a structural homology model of PmHAS, revealing two distinct sites for binding of oligosaccharides of different sizes, one in each transferase domain. Structural alignment studies between PmHAS and glycosyltransferases of the GT-A fold showed significant similarity in the binding of the UDP-sugars and the orientation of the acceptor substrate. These similarities in substrate orientation in the active site and in essential amino acid residues involved in substrate binding were utilized to localize the two HA oligosaccharide binding sites.

关键词： Pasteurella Hyaluronan Binding Site Polymerization Co-Polymers

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Isolation and Identification of Mannheimia haemolytica and Pasteurella multocida Species from Ruminants in Six Different Regions in Morocco

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Journal of Agricultural Science and Technology(A) 2018年第6期8卷 398-405页

作者： Ghizlane Sebbar Khalil Zro Faouzi Kichou Abdelkrim Fillali Maltouf Bouchra Belkadi Society of Veterinary Pharmaceutical and Biological Productions(Biopharma) B.P.4569RabatMorocco Laboratory of Microbiology and Molecular Biology Faculty of SciencesUniversity Mohammed V4 Ibn Battouta Ave.BP 1014 RP RabatMorocco Institute of Agronomy and Veterinary Medicine Hassan II B.P.6202RabatMorocco

Pasteurella species is considered the principal pathogen of the respiratory tract.Mannheimia haemolytica and Pasteurella multocida were investigated and typed from nasal swabs and tissues taken from sheep,goat and cattle.Indeed,41 lung and 121 nasal swabs samples were collected from animals with respiratory diseases during 2015 to 2017 in six different regions in Morocco.At first,a screening of Pasteurella species using the real time PCR(RT-PCR)was carried out,then all isolated strains on agar blood were confirmed by PCR gel based assay specific for M.haemolytica and P.multocida.Pathogenicity was evaluated in mice and histopathological examination was done on some of lung tissue.The results revealed that 34 samples of which 28(55%)from nasal swabs and six(38%)from lungs were positive for M.haemolytica and nine samples of which seven(14%)from nasal swabs and two(13%)from lungs were positive on P.multocida serogroup A.Seventy-two percent(72%)isolates were highly pathogenic to mice,which is in accordance with the results obtained by histopathology examination.This is the first report for widespread infections of Pasteurella(M.haemolytica&P.multocida)in ruminants in Morocco.Therefore,measures including development of vaccines are highly required to mitigate the impact of the bacteria in animals.

关键词： Isolation identification PCR Mannheimia haemolytica Pasteurella multocida histopathology Morocco.

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Presence of <i>Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae</i>in upper respiratory tract of swine in farms from Aguascalientes, Mexico

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Open Journal of Animal Sciences 2013年第2期3卷 132-137页

作者： Abraham Loera-Muro Francisco J. Avelar-González Víctor M. Loera-Muro Mario Jacques Alma L. Guerrero-Barrera Centro de Ciencias Básicas Universidad Autónoma de Aguascalientes Aguascalientes México Groupe de recherche sur les maladies infectieuses du porc Faculté de Médecine Vétérinaire Université de Montréal St-Hyacinthe Canada Laboratorio de Biología Celular y Tisular Departamento de Morfología Centro de Ciencias Básicas Universidad Autónoma de Aguascalientes Aguascalientes México

Respiratory diseases are one of the most important health problems in pig herds. The porcine respiratory disease complex (PRDC) is the term used to describe pneumonic diseases caused by multiple infectious agents that provoke weight loss in animals or death. In the PRDC multiple pathogens (bacteria and/or viruses) work in combination to induce this respiratory disease. Within this complex, Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae are the main bacterial pathogens involved in great economic losses to the swine industry. The aim of this work was to estimate the presence of A. pleuropneumoniae, S. suis, P. multocida, B. bronchiseptica, H. parasuis and M. hyopneumoniae in the upper respiratory tract of pigs in representative swine farms inAguascalientes,Mexico, using PCR technique. The study was performed in 14 swine farms. We obtained a total of 212 nasal swabs. Near 20% of samples were positive for A. pleuropneumoniae (located in the 79% of farms);17% were positive for S. suis (in 86% of farms), of these, 3% were S. suis serovar 2;30% were positive for H. parasuis (93% of farms);23% of the samples to P. multocida (in 79% of farms);and 19% to M. hyopneumoniae (in 64% of farms). B. bronchiseptica was not detected in this study. The results obtained show that bacterial pathogens of PRDC were present in the upper respiratory tract of pigs in all farms studied;therefore, these pathogens are widely disseminated in pig farms of Aguascalientes, Mexico.

关键词： Porcine Respiratory Disease Complex Actinobacillus pleuropneumoniae Streptococcus suis Pasteurella multocida Bordetella bronchiseptica Haemophilus parasuis Mycoplasma hyopneumoniae

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巴斯德菌属(Pasteurella)一些细菌的营养要求

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地方病译丛 1979年第4期 60-67页

作者：叶瑞玉

绪言在用于研究微生物遗传学的最有用的菌株中。已证实存在营养缺陷型的标志。用对亲本菌体最低营养要求的有关知识,人们可望得到营养缺陷型变异株并发明能检测包括营养缺陷型遗传决定簇的罕见重组现象的高度选择性培基,作为对假结核杆... 详细信息

绪言在用于研究微生物遗传学的最有用的菌株中。已证实存在营养缺陷型的标志。用对亲本菌体最低营养要求的有关知识,人们可望得到营养缺陷型变异株并发明能检测包括营养缺陷型遗传决定簇的罕见重组现象的高度选择性培基,作为对假结核杆菌遗传学研究的一种初步试验,我们研究了该菌的营养要求。由于这种菌和鼠疫杆菌具有许多共

关键词：杆菌细菌 Pasteurella 营养要求强毒菌株

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Comparative antimicrobial activity of Moricin(naturally produced by silk worm,Bombyx mori larvae)against clinically important pathogens

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传染病研究(英文) 2023年第4期4卷 24-34页

作者： Bhoj R Singh Himani Agri Division of Epidemiology ICAR-Indian Veterinary Research InstituteBareilly 243122India

With the emergence and spread of antimicrobial resistance(AMR)it becomes pertinent to search for an antimicrobial alternative to cater for the imminent need to control total drug-resistant(TDR)and multiple-drug-resistant(MDR)infections.Antimicrobial peptides(AMPs)have shown some promise and this study was designed to evaluate antimicrobial activity of Moricin(a naturally produced AMP by silkworm,Bombyx mori larvae)against 276 microbial strains of 83 species.Only two(Erwinia amylovora 1,Hafnia alvei 1)strains were classified as susceptible to Moricin at a concentration≤8μg/mL.If susceptibility criteria were set at MIC equivalent to≤128μg/mL then Moricin inhibited 17 strains.All of the Bacillus species strains and majority of the strains of Acinetobacter,Aeromonas,Enterococcus,Erwinia,Raoultella,and Serratia species were significantly(p512μg/mL)to Moricin than strains belonging to Alacligenes,Bacillus,Escherichia,Klebsiella,Pantoea,Pasteurella,Salmonella,Staphylococcus and Streptococcus species.Susceptibility of different bacteria not only varied significantly to Moricin but also to most of the commonly used antibiotics.The susceptibility of microbes not only affected by their type but also by their source of origin.The study concluded that Moricin has a wide spectrum but limited potential to inhibit clinically important microbial strains belonging to different species and genera.

关键词： AMPs antimicrobial susceptibility Alacligenes Escherichia Klebsiella Pasteurella Salmonella Staphylococcus Yeast and moulds

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Effects of All-trans Retinoic Acid (ATRA) against Bacterial Infection in Chickens

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Agricultural Biotechnology 2017年第4期6卷 25-27,47页

作者： Chao REN Rujie LI Biao YU Nina JIA Shunzi YUAN Tianming JIN College of Animal Science and Veterinary Medicine Tianjin Agricultural University Tianjin 300384 China

In order to investigate the effects of all-trans retinoic acid （ATRA） against bacterial infection in chickens, 35 3-day-old AA broiler chickens were fed adaptively for two days and randomly divided into five groups, including Escherichia coli experimental group （ group 1 ）, Escherichia coli control group （group 2）, blank control group （ group 3 ）, PasteureUa experimental group （ group 4）, and PasteureUa control group （ group 5 ）. At 5 days of age, the chickens in group 1 and group 4 were drenched with 5 p.mol/kg ATRA for seven consecutive days according to their weight; the chickens in group 2, group 3 and group 5 were drenched with an equal volume of dimethyl sulfoxlde （DMSO）. The clinical symptoms and weight changes in each group were observed and recorded. Seven days later, the chickens were euthanized and dissected to determine the immune organ indexes. The results showed that there were significant differences in body weight between ATRA-administrated chickens and non-administrated chickens after bacterial infection （P 〈 0.05 ） ; moreover, the immune organ indexes of ATRA-administrated chickens exhibited significant differences compared with control group （P 〈 0.05 ）, indicating that ATRA could promote the development of immune organs of poultry, thereby enhancing the body immunity against bacterial infection.

关键词： All-trans retinoic acid （ATRA） Escherichia coli Pasteurella Chickens Anti-infection Weight Immune organ index

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Medical Care after Cat Bites: A Typical Case and Review

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International Journal of Clinical Medicine 2014年第6期5卷 340-343页

作者： Jarmo Oksi U. Ahlmén-Laiho M. Laine Department of Anesthesiology Loimaa Regional Hospital Loimaa Finland Department of Infectious Diseases Division of Medicine Turku University Hospital Turku Finland Faculty of Medicine University of Turku Turku Finland Department of Surgery Loimaa Regional Hospital Loimaa Finland

Pet cat bites are common—the most typical patient being a child, and the most typical locality hands and face. The normal flora of a pet cat’s mouth houses very potent pathogens. Therapeutic measures include wound cleansing, prophylaxis against tetanus and possibly rabies. Antibiotic prophylaxis should be administered in the cases of all but the mildest superficial wounds especially if the wound is in the hand or face. We present a review on the medical care of cat bite wounds and a typical case of a patient who developed rapid symptoms and signs of infection after a pet cat bite and nearly required hospitalization. The clinical picture was consistent with a Pasteurella infection.

关键词： Cat Bite Animal Bite Pasteurella Antibiotic Prophylaxis

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