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Articles 1 - 30 of 1106

Full-Text Articles in Veterinary Microbiology and Immunobiology

Avian Influenza And The Approach To Designing An H5n1 Vaccine, Lauren N. Hickey May 2027

Avian Influenza And The Approach To Designing An H5n1 Vaccine, Lauren N. Hickey

Honors Program: Senior Projects (Public)

The Avian influenza virus (AIV) H5N1 has been responsible for the culling and deaths of millions of birds since 2022 with concern for wildlife, livestock, and human infections occurring as well. With eggs flying off the shelves in grocery stores, even individuals not involved in the agricultural industry have seen the drastic effects of this disease first-hand. For chickens, this virus works quickly and overpowers the innate immune system before the adaptive immune system has time to properly respond. Therefore, a safe and effective vaccine could reduce the number of poultry deaths and prevent the continuous spread of the infection. …


Surveillance Of A Novel Vesivirus Discovered In An Urban Mephitis Mephitis Population, Amanda E. Diggins Jan 2026

Surveillance Of A Novel Vesivirus Discovered In An Urban Mephitis Mephitis Population, Amanda E. Diggins

Honors Theses and Capstones

Caliciviridae is a family of non-enveloped, positive-sense, single stranded RNA viruses, including eleven defined genera that contain important pathogens of humans and animals. Within the Caliciviridae family, the genus Vesiviridae includes feline calicivirus, a leading cause of upper respiratory disease in cats, and vesicular exanthema of swine virus, a historical disease of domestic swine that has now been implicated in several marine mammal vesicular diseases, one of which has been confirmed zoonotic. Urban landscapes create a unique environment for rapid intra- and interspecies transmission of viruses. Clustered resources attract high-density populations of synanthropic wildlife species, increasing spatial overlap and heightening …


The Impact Of A Nf-Κb Signaling Inhibitor On The Antibacterial Activity Immune Response In The Cat Flea (Ctenocephalides Felis), Caroline M. Singer Jan 2026

The Impact Of A Nf-Κb Signaling Inhibitor On The Antibacterial Activity Immune Response In The Cat Flea (Ctenocephalides Felis), Caroline M. Singer

College of Graduate Studies: Theses & Dissertations

Ctenocephalides felis are vectors of several bacterial pathogens that cause disease in humans and animals, including Bartonella henselae and Rickettsia felis. Successful pathogen transmission requires that microbes survive the immune defenses of the flea digestive tract following blood feeding. In insects, humoral immune responses are regulated primarily by the Toll and immune deficiency (IMD) signaling pathways, with the IMD pathway serving as the principal defense against Gram-negative bacteria. Although genomic and transcriptional evidence indicate that cat fleas encode and express components of the IMD signaling pathway, the functional roles of individual pathway components within the flea digestive tract remain …


Evaluation Of Chicken Serum And Chicken Egg Yolk As Novel Supplements For The In Vitro Cultivation Of Mycoplasma Hyorhinis, Yi-Chia Li, Sin-Hang Ma, Wei-Hao Lin, Chao-Nan Lin, Ming-Tang Chiou Dec 2025

Evaluation Of Chicken Serum And Chicken Egg Yolk As Novel Supplements For The In Vitro Cultivation Of Mycoplasma Hyorhinis, Yi-Chia Li, Sin-Hang Ma, Wei-Hao Lin, Chao-Nan Lin, Ming-Tang Chiou

The Thai Journal of Veterinary Medicine

Mycoplasma hyorhinis is a significant pathogen in swine, yet its fastidious nutritional requirements present challenges for in vitro cultivation. Conventional supplements like horse serum (HS) often suffer from batch variability and potential inhibitors. This study aimed to evaluate chicken serum (CS) and chicken egg yolk (CY) as novel alternatives to develop a reliable cultivation method for M. hyorhinis. Five clinical isolates were cultured for 10 days in a basal medium supplemented with CS or CY at 10%, 20%, or 30%, with 30% HS as the control. Growth was quantified daily using a Color Changing Unit (CCU) assay. CS supported …


Core And Characteristic Oral Microorganisms In The Giant Pandas (Ailuropoda Melanoleuca) Suggested Plenty Of Antibiotic Resistance Prevalence: A Mini Review, Han Long, Haifeng Liu, Caiwu Li, Xiaoping Ma, Guangneng Peng, Zhijun Zhong, Chengdong Wang, Ziyao Zhou Dec 2025

Core And Characteristic Oral Microorganisms In The Giant Pandas (Ailuropoda Melanoleuca) Suggested Plenty Of Antibiotic Resistance Prevalence: A Mini Review, Han Long, Haifeng Liu, Caiwu Li, Xiaoping Ma, Guangneng Peng, Zhijun Zhong, Chengdong Wang, Ziyao Zhou

The Thai Journal of Veterinary Medicine

The giant panda (Ailuropoda melanoleuca) is a world-recognized rare wildlife endemic to China. Oral microorganisms may cause dental and other systemic diseases. Additionally, antibiotic resistance in this cute mammal may spread widely to travelers. In this mini review, we illustrated the oral core microorganisms of the giant pandas and their characteristics, as well as their prevalence of antibiotic resistance genes. Although there is limited availability in panda sample collection, researchers have made great efforts to find the characteristics of the giant pandas’ oral microbiota, including Enterococcus faecium, Enterococcus faecalis, and Staphylococci, with antibiotic resistance genes optrA …


Recovery And Characterization Of Moraxella Species From Bovine Specimens, Laura G. Leger Dec 2025

Recovery And Characterization Of Moraxella Species From Bovine Specimens, Laura G. Leger

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

The family Moraxellaceae is made up of a diverse group of 24 named species that fall into three phylogenetic groups. While most Moraxella spp. act as commensal respiratory and/or ocular flora of mammals, some are associated with disease. One of these diseases, infectious bovine keratoconjunctivitis (IBK), has significant welfare and economic impacts to both cattle and cattle producers. Moraxella bovis is the only experimentally determined cause of IBK, however, an association of Moraxella bovoculi with disease has been proposed. Currently, available vaccines do not have high levels of efficacy in the field. Culture based methods are the gold standard for …


Biofilm Formation Of A Strain Of Bovine Escherichia Coli And Analysis Of Its Influencing Factors, Xin Zhang, Yunjiao Chen, Weijuan Jia, Zhilin Liu, Zelin Jia, Jiayu Cui, Huisheng Xiong, Yuhang Zhang, Xueli Wang Oct 2025

Biofilm Formation Of A Strain Of Bovine Escherichia Coli And Analysis Of Its Influencing Factors, Xin Zhang, Yunjiao Chen, Weijuan Jia, Zhilin Liu, Zelin Jia, Jiayu Cui, Huisheng Xiong, Yuhang Zhang, Xueli Wang

The Thai Journal of Veterinary Medicine

This study investigated the biofilm (BF) formation of a bovine-derived Escherichia coli (E. coli) strain (designated DL1907) and analyzed the factors influencing its formation. The BF-forming capacity, optimal formation time and temperature, as well as the effects of different culture media, pH levels, NaCl concentrations, and glucose concentrations, were assessed using the crystal violet method. The results demonstrated that the strain had a strong BF-forming capacity, achieving the most intact BF structure after 36 h of culture at 37°C. Trypticase Soy Broth (TSB) medium promoted the strongest BF formation compared to Luria-Bertani (LB) and Müller-Hinton Broth (MH) media. …


Molecular Identification Of Cryptosporidium Spp. Isolated From Dairy Calves In The Northern Region Of Algeria, Dadda Anes, Abdellah Mohamed Cherif, Aoun Leila, Chatanun Eamudomkarn, Khelef Djamel, Keeseon S Eom, Dongmin Lee, Barakaeli Abdieli Ndosi, Mohammed Mebarek Bia Oct 2025

Molecular Identification Of Cryptosporidium Spp. Isolated From Dairy Calves In The Northern Region Of Algeria, Dadda Anes, Abdellah Mohamed Cherif, Aoun Leila, Chatanun Eamudomkarn, Khelef Djamel, Keeseon S Eom, Dongmin Lee, Barakaeli Abdieli Ndosi, Mohammed Mebarek Bia

The Thai Journal of Veterinary Medicine

Cryptosporidium spp. is the most frequent agent in Algeria that causes neonatal diarrhea in calves, with high symptomatic diarrhea in pre-weaned dairy calves. The study aims to measure the prevalence, distribution, and genotype of Cryptosporidium-infected calves in one of Algeria's high milk production areas (North Central and Northeast). From 35 dairy cattle farms were selected 172 (77 with diarrheic and 95 without diarrheic symptoms) calves aged less than 60 days. Twenty-three farms (65.71%) were detected with cryptosporidiosis using a modified Ziehl-Neelsen stain, whereby 68 calves (39.53%) were obtained positive. The Copro-ELISA test gave an individual prevalence of (37.66%, 22.11%) …


Monitoring Of African Horse Sickness Virus-Specific Antibodies In Horses, Northeastern Thailand, Napawan Bunpapong, Kitikhun Udom, Ekkapat Chamsai, Patchara Phuektes, Suphattra Jittimanee, Suphannika Phutthachalee, Supassama Chaiyawong, Kamonpan Charoenkul, Alongkorn Amonsin Prof. Dr. Jul 2025

Monitoring Of African Horse Sickness Virus-Specific Antibodies In Horses, Northeastern Thailand, Napawan Bunpapong, Kitikhun Udom, Ekkapat Chamsai, Patchara Phuektes, Suphattra Jittimanee, Suphannika Phutthachalee, Supassama Chaiyawong, Kamonpan Charoenkul, Alongkorn Amonsin Prof. Dr.

The Thai Journal of Veterinary Medicine

African horse sickness (AHS) is caused by infection with the African horse sickness virus (AHSV). In March 2020, AHS was first reported in Thailand due to the importation of subclinically infected host animals, such as zebras. In this study, we conducted a serological survey for AHSV-specific antibodies across 21 horse farms in the northeastern provinces (n=3) of Thailand. A total of 600 serum samples were collected for cross-sectional (n = 292) and longitudinal serological monitoring (n = 308). A cross-sectional study was conducted in 2020, during which serum samples (n = 292) were collected and tested for AHS antibodies using …


Genetic Characterization Of Lpai-H4n2 And H4n8 Viruses Recovered From Free-Grazing Ducks In Thailand, Supanat Boonyapisitsopa, Supassama Chaiyawong, Kamonpan Charoenkul, Kitikhun Udom, Ekkapat Chamsai, Napawan Bunpapong, Somsak Pakpinyo, Alongkorn Amonsin Prof. Dr. Jun 2025

Genetic Characterization Of Lpai-H4n2 And H4n8 Viruses Recovered From Free-Grazing Ducks In Thailand, Supanat Boonyapisitsopa, Supassama Chaiyawong, Kamonpan Charoenkul, Kitikhun Udom, Ekkapat Chamsai, Napawan Bunpapong, Somsak Pakpinyo, Alongkorn Amonsin Prof. Dr.

The Thai Journal of Veterinary Medicine

nfluenza A viruses (IAVs) can infect birds and various mammals. In this study, we retrospectively isolated and characterized IAVs (n=8) from oropharyngeal and cloacal swab samples of free-grazing ducks collected during December 2018 to December 2021, by using egg inoculation and whole-genome sequencing. The IAVs could be subtyped as IAV-H4N2 (n = 3) and IAV-H4N8 (n = 5) using real-time RT-PCR assays. Genetic and phylogenetic analyses revealed that all eight genes of Thai IAV-H4 belong to the Avian Eurasian lineage. Both Thai IAV-H4N2 and IAV-H4N8 exhibited low pathogenic avian influenza (LPAI) characteristics and were susceptible to oseltamivir and amantadine. This …


Overcoming Vaccine-Associated Enhanced Respiratory Disease In Swine Flu With Lipid Nanoparticle-Dna Technology, The Nguyen Jun 2025

Overcoming Vaccine-Associated Enhanced Respiratory Disease In Swine Flu With Lipid Nanoparticle-Dna Technology, The Nguyen

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

The two primary challenges in developing vaccines against swine influenza A virus (IAV-S) are the continuous viral evolution and vaccine-associated enhanced respiratory disease (VAERD). Current vaccine strategies share a common limitation: the significant time required for licensing updated vaccines. Moreover, the strain selection for vaccine updates depends entirely on predictions, raising the risk that chosen strains may not match circulating viruses. Such mismatches not only reduce vaccine efficacy but also risk exacerbating disease severity through VAERD. Here, in this thesis, we developed and evaluated a novel DNA-based vaccine platform designed to address the need for rapid updates in response to …


Antibiotic Resistance Profile Of Enterobacteriaceae Isolated From Healthy Pigs In The Republic Of Armenia, Yura Shirvanyan, Irma Artushyan, Lilit Hovsepyan, Ashkhen Shirvanyan, Elmira Ghazaryan, Tigran Markosyan Mar 2025

Antibiotic Resistance Profile Of Enterobacteriaceae Isolated From Healthy Pigs In The Republic Of Armenia, Yura Shirvanyan, Irma Artushyan, Lilit Hovsepyan, Ashkhen Shirvanyan, Elmira Ghazaryan, Tigran Markosyan

The Thai Journal of Veterinary Medicine

The rising prevalence of antimicrobial resistance (AMR) among Enterobacteriaceae in livestock presents a significant threat to both animal and human health. This study investigates the antibiotic resistance profiles of Enterobacteriaceae isolated from 160 samples collected from the lymph nodes of healthy pigs in Armenia. Fifty isolates were identified, including Escherichia coli (24), Klebsiella spp. (10), Salmonella spp. (6), Raoultella ornithinolytica (4), Pseudomonas aeruginosa (4), and Proteus mirabilis (2). Resistance was evaluated using the disk diffusion method against 22 antibiotics from nine classes. Alarmingly, 94.5% of isolates were resistant to clarithromycin and 90.3% to erythromycin, while resistance to cephalothin and amoxicillin …


Prevalence Study Of Feline Ab Blood Types In Bangkok And Vicinities Of Thailand By Rapid Immunochromatographic Test During 2022-2024, Suwarath Wadeerat, Sinittha Thongwandi, Thitima Tripipat, Teerawut Nedumpun Mar 2025

Prevalence Study Of Feline Ab Blood Types In Bangkok And Vicinities Of Thailand By Rapid Immunochromatographic Test During 2022-2024, Suwarath Wadeerat, Sinittha Thongwandi, Thitima Tripipat, Teerawut Nedumpun

The Thai Journal of Veterinary Medicine

The AB blood group system is a key classification for feline blood types, categorizing them as type A, B, or AB based on red blood cell surface antigens. This study aimed to update the prevalence of feline blood types among domestic and pedigreed cats in Bangkok and vicinities from 2022 to 2024. A total of 114 blood samples, including 76 Domestic Shorthairs (DSH) and 38 pedigreed cats, including 10 breeds, were analyzed using the rapid immunochromatographic feline blood typing. Results revealed that blood type A was predominant, present in 93.86% of cats, consistent with global findings. Blood types B and …


Immuno-Bioinformatics Study Of Secondary Metabolites From Watercress Nasturtium Officinale As Immunostimulant In Whiteleg Shrimp Litopenaeus Vannamei By Targeting Peroxinectin And Scavenger Receptor Class B, Qurrota A’Yunin, Muhaimin Rifa’I, Maftuch Maftuch, Yoga Dwi Jatmiko, Muhammad Hermawan Widyananda, Triyanto Triyanto, Muhammad Tegar Handrianto Jan 2025

Immuno-Bioinformatics Study Of Secondary Metabolites From Watercress Nasturtium Officinale As Immunostimulant In Whiteleg Shrimp Litopenaeus Vannamei By Targeting Peroxinectin And Scavenger Receptor Class B, Qurrota A’Yunin, Muhaimin Rifa’I, Maftuch Maftuch, Yoga Dwi Jatmiko, Muhammad Hermawan Widyananda, Triyanto Triyanto, Muhammad Tegar Handrianto

Karbala International Journal of Modern Science

The viral disease affects the whiteleg shrimp (Litopenaeus vannamei) and causes losses. Immunostimulants are recognized as a more environmentally friendly approach to disease management and antimicrobial properties of aquatic organisms. Watercress (Nasturtium officinale) is an aquatic plant species that contains antioxidant properties that can protect the organism from disease and boost the immune system. Shrimp rely heavily on innate immunity to combat infectious agents due to their absence of adaptive immunity. Peroxinectin and scavenger receptor class B (SRB) play essential roles in the shrimp defense system. This research employs a bioinformatic to assess the immunostimulatory potential …


Correlation Of Classical Swine Fever (Csf) Antibody Protective Level Detected By Enzyme-Linked Immunosorbent Assay And Serum Neutralization Test, Chairani Ridha Maghfira, Nguyen Thanh Che, Apisit Kittawornrat, Roongroje Thanawongnuwech, Yaowalak Panyasing Jan 2025

Correlation Of Classical Swine Fever (Csf) Antibody Protective Level Detected By Enzyme-Linked Immunosorbent Assay And Serum Neutralization Test, Chairani Ridha Maghfira, Nguyen Thanh Che, Apisit Kittawornrat, Roongroje Thanawongnuwech, Yaowalak Panyasing

The Thai Journal of Veterinary Medicine

Protective antibody against classical swine fever virus (CSFV) is an important parameter used for disease monitoring in CSFV-endemic areas. Enzyme-linked immunosorbent assay (ELISA) is a simple and practical serological assay for CSFV antibody detection. However, the use of CSFV ELISAs in CSFV antibody-positive herds, i.e., CSFVvaccinated or -previously infected herds, was limited by an application of the test results. This study aimed to evaluate the correlation and estimation of protective antibody levels detected by ELISA and serum neutralization assay. A total of 522 negative and positive serums were tested by SN and ELISA in parallel. Comparisons of sample-to-positive (S/P) values …


Neuroinflammatory Signaling And Immune Cell Infiltration Differ In Brains Of Rats Exposed To Space Radiation And Social Isolation, Austin M. Adkins, Zachary N. M. Luyo, Alea F. Boden, Riley S. Heerbrandt, Richard A. Britten, Laurie L. Wellman, Larry D. Sanford Jan 2025

Neuroinflammatory Signaling And Immune Cell Infiltration Differ In Brains Of Rats Exposed To Space Radiation And Social Isolation, Austin M. Adkins, Zachary N. M. Luyo, Alea F. Boden, Riley S. Heerbrandt, Richard A. Britten, Laurie L. Wellman, Larry D. Sanford

Center for Integrative Neuroscience and Inflammatory Diseases (CINID) Faculty Publications

Astronauts on the proposed Mars missions will be exposed to extended periods of social isolation (SI) and space radiation (SR). SI and SR-induced immune dysregulation can result in persistent neuroinflammation and neuronal damage which could negatively impact an astronaut’s health and ability to maintain adequate levels of performance. The synergistic effects of combined SI and SR on immune system functionality and the brain remain unknown. Determining how single and combined inflight stressors modulate the immune system is crucial for fully understanding pathways impacting astronaut health and performance. We used ground-based analogs of SI and SR in rodent models to investigate …


Engineering Novel Biomimetic Models Of Equine Host-Microbe Interactions, Lynn M. Leedhanachoke Jan 2025

Engineering Novel Biomimetic Models Of Equine Host-Microbe Interactions, Lynn M. Leedhanachoke

Theses and Dissertations--Veterinary Science

One major limitation to the study of equine disease is the lack of in vitro models that accurately reflect the dynamic physiology of the horse. Thus, there is a pressing need to develop in vitro systems that recapitulate diverse equine tissue and organ microenvironments. To overcome this deficiency, we developed multiple biomimetic equine organoid systems that can be employed for a variety of investigations aimed at resolving outstanding questions in infectious disease pathogenesis, therapeutic development and drug metabolism, host defense mechanisms, immune-modulated disease, and equine developmental biology. Our innovative platform incorporates novel equine intestinal enteroid and airway organoid models derived …


Evaluation Of The Presence Of Sarcocystis Spp. In Dogs Raised In Alpaca Farm Enterprises In Cajamarca, Peru, Milena Ydrogo, María Cabrera, Jennifer L. Cuzcano-Anarcaya, Luis A. Vargas-Rocha, Teófilo Torrel Dec 2024

Evaluation Of The Presence Of Sarcocystis Spp. In Dogs Raised In Alpaca Farm Enterprises In Cajamarca, Peru, Milena Ydrogo, María Cabrera, Jennifer L. Cuzcano-Anarcaya, Luis A. Vargas-Rocha, Teófilo Torrel

The Thai Journal of Veterinary Medicine

The apicomplexans of the genus Sarcocystis are parasites that infect various animal species, including humans. Both dogs and other carnivores can act as definitive hosts of this protozoan. The present study aimed to determine the frequency of Sarcocystis spp. in domestic dogs raised in three alpaca breeding areas in Cajamarca. Random fecal samples were collected from 102 dogs of different ages and both sexes in three locations related to alpaca breeding: Atahualpa Jerusalén Agricultural Workers Cooperative - Cajamarca (N = 35), SAIS Huacraruco - San Juan (N = 33), and Alpacas Project - Foncreagro - Sorochuco (N = 34). The …


The Relationship Between Periodontal Disease Of Feline And Oral Core Microbiome, Ziyao Zhou Dec 2024

The Relationship Between Periodontal Disease Of Feline And Oral Core Microbiome, Ziyao Zhou

The Thai Journal of Veterinary Medicine

The microbiome of the oral cavity is complex with the average adult harboring about 50 to 100 billion bacteria which represent about 200 predominant bacterial species. There are a large number of microbes in the oral cavity of the feline, normally beneficial to oral health and safety maintenance. However, when the balance of bacteria lost, it may occur feline stomatitis and periodontitis, which seriously endanger local oral health. Environmental implication, feeding model, age and genetic factors may be main factors affecting oral composition of microbiome. Filifactor alocis, Porphyromonas gingivals, Tannerella forsythia and their interactions are main pathogen that …


Multidrug-Resistance In Escherichia Coli And Klebsiella Pneumoniae Isolated From Broiler Chickens In Eastern Thailand, Suttitas Tongkamsai, Wachirawit Chatmontee, Kulchai Nakbubpa Dec 2024

Multidrug-Resistance In Escherichia Coli And Klebsiella Pneumoniae Isolated From Broiler Chickens In Eastern Thailand, Suttitas Tongkamsai, Wachirawit Chatmontee, Kulchai Nakbubpa

The Thai Journal of Veterinary Medicine

Broiler chickens have been suggested as an important source of antibiotic resistance Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae). The coinfection of multiple species of bacteria provides a specific ecological niche for the plasmid-mediated exchange of antibiotic-resistance genes. However, there is limited information about antimicrobial resistance (AMR) phenotypes of E. coli and K. pneumoniae isolates from broiler chickens. This study aimed to isolate E. coli and K. pneumoniae from broiler chicken farms in Thailand by observing the antibiotic resistance profiles and detecting the coexistence of these two bacteria. A total of 26 E. coli and 29 …


Alabama Agricultural Producers’ Experiences With Wild Pigs (Sus Scrofa) And Their Preferences Concerning Wild Pig Management, Hailey E. Ellis, Luren M. Jaebker, Alan D. Bright, Mark D. Smith, Keith M. Carlisle Nov 2024

Alabama Agricultural Producers’ Experiences With Wild Pigs (Sus Scrofa) And Their Preferences Concerning Wild Pig Management, Hailey E. Ellis, Luren M. Jaebker, Alan D. Bright, Mark D. Smith, Keith M. Carlisle

United States Department of Agriculture Wildlife Services: Staff Publications

Government agencies and landowners use a variety of lethal methods to reduce invasive wild pig populations and resulting agricultural damages. To provide decision-makers with information regarding Alabama farmers’ experiences with wild pigs and their preferences for management actions, we surveyed Alabama Farmers Federation members in 2020. We found that wild pigs were commonly present on livestock, timber, and crop production acreage, but wild pig damages and costs were much more common among crop producers. Respondents' wildlife acceptance capacity for wild pigs was low and all lethal control methods were considered aceptable by most reposndents, particularly those performed by landowners. While …


Effects Of Extracellular Vesicle Transfer On The Immunological Acceptance Of The Fetal Allograft, Heloisa Moreno Rutigliano Sep 2024

Effects Of Extracellular Vesicle Transfer On The Immunological Acceptance Of The Fetal Allograft, Heloisa Moreno Rutigliano

Funded Research Records

No abstract provided.


Bovine Respiratory Syncytial Virus: First Identification In Eastern Algeria Based On Direct Immunofluorescence And Elisa Tests, Imene Abdelmalek, Bakir Mamache, Amine Boudaoud, Yacine Khanfri Sep 2024

Bovine Respiratory Syncytial Virus: First Identification In Eastern Algeria Based On Direct Immunofluorescence And Elisa Tests, Imene Abdelmalek, Bakir Mamache, Amine Boudaoud, Yacine Khanfri

The Thai Journal of Veterinary Medicine

Bovine respiratory syncytial virus (BRSV) is the main agent of the bovine respiratory disease complex (BRD). Its circulation among the Algerian bovine population has been strongly suspected but never confirmed. This study investigated the prevalence of BRSV in cattle in eastern Algeria. From 2022 to 2023, a total of 225 serum and 102 lung tissue samples were collected from farms and slaughtered cattle of different ages. Samples were tested for BRSV antibodies by Enzyme-Linked Immunosorbent Assay (ELISA) and BRSV antigens by Direct Immunofluorescence Test (DFAT). Histopathological examination was also performed on lung tissue sections. BRSV-specific antibodies were detected in 91.11% …


Bioinformatics Analysis And Comparison Of The S Protein Of Canine Coronavirus And Feline Coronavirus, Bo Dong, Xiaowei Zhong, Jiaqi Zhuo, Renyi Hu, Xiaodong Zhang, Xiaolian Xu, Haiyan Deng, Xiaofang Yan, Weiming Lin Sep 2024

Bioinformatics Analysis And Comparison Of The S Protein Of Canine Coronavirus And Feline Coronavirus, Bo Dong, Xiaowei Zhong, Jiaqi Zhuo, Renyi Hu, Xiaodong Zhang, Xiaolian Xu, Haiyan Deng, Xiaofang Yan, Weiming Lin

The Thai Journal of Veterinary Medicine

The Coronavirus S protein induces neutralizing antibodies, specific receptor binding, and membrane fusion between the virus and host cells. These changes are crucial to understanding the mechanism, genetic correlates, and prophylactic treatment of viral infection. In this study, the spike (S) protein structure and phylogenetic association of CCoV and FcoV were analyzed using bioinformatics. The results showed that the S proteins of CCoV and FCoV contained transmembrane regions and signal peptides. The S proteins of these coronaviruses were soluble. The S proteins of these strains also contained two functional domains and two motifs, i.e., corona_S1 and corona_S2. Phylogenetic analysis showed …


Multidrug-Resistant Esbl-Producing Escherichia Coli Coexisting With Colistin-Resistance Genes In Pig Farms, Central Thailand, Wipawee Songsaeng, Nutthee Am-In, Nuvee Prapasarakul, Wandee Sirichokchatchawan Aug 2024

Multidrug-Resistant Esbl-Producing Escherichia Coli Coexisting With Colistin-Resistance Genes In Pig Farms, Central Thailand, Wipawee Songsaeng, Nutthee Am-In, Nuvee Prapasarakul, Wandee Sirichokchatchawan

The Thai Journal of Veterinary Medicine

The presence of extended-spectrum beta-lactamase and colistin resistance E. coli in food-producing animals is a public health concern. This study was conducted using a rigorous methodology to survey the prevalence of ESBL-producing and colistin-resistant E. coli from pig farms in the central part of Thailand. A total of 519 samples were collected from fecal, feed, and waste in 53 farms located in central Thailand. All samples were inoculated onto selective agar, and species identification was performed using biochemical assays and MAlDI-TOF MS. Antimicrobial susceptibility was determined by broth microdilution, and ESBL production was confirmed by the combination disc diffusion method. …


Preventive Effects Of Quercetin On The Leaky Gut By Suppression Of Il-1beta-Induced Transcription Factors Involved In An Inflammatory Pathway In Colonic Epithelial Cells, Wannaporn Chayalak, Sumpun Thammacharoen, Chatsri Deachapunya, Sutthasinee Poonyachoti Aug 2024

Preventive Effects Of Quercetin On The Leaky Gut By Suppression Of Il-1beta-Induced Transcription Factors Involved In An Inflammatory Pathway In Colonic Epithelial Cells, Wannaporn Chayalak, Sumpun Thammacharoen, Chatsri Deachapunya, Sutthasinee Poonyachoti

The Thai Journal of Veterinary Medicine

Flavonol quercetin (Q), found in vegetables and fruits, demonstrates the most potent anti-inflammatory effect. The preventive effect and cellular mechanisms of Q (Q1, Q10, and Q100 µM) on IL-1β induced leaky gut via the signaling molecules of inflammatory pathway, NF-κB p65-iκB/or p38/ERK1/2/MLCK/phospho(p)-MLC were investigated in Caco-2 cells. The cytotoxic effect of Q was initially determined by MTT assay. Transepithelial electrical resistance (TER) and apical-to-basolateral fluorescein isothiocyanate-labeled dextran (FD-4) flux were used to determine paracellular permeability. The protein expression of signaling molecules was examined by Western blot analysis, and their target MLCK mRNA expression was determined using real-time PCR. All Q …


A Case Of Conjunctivitis Due To Mdr-Mr Staphylococcus Pseudintermedius In A Dog, Hazel Tamakan Yesi̇lovali, Hali̇t Sukur Aug 2024

A Case Of Conjunctivitis Due To Mdr-Mr Staphylococcus Pseudintermedius In A Dog, Hazel Tamakan Yesi̇lovali, Hali̇t Sukur

The Thai Journal of Veterinary Medicine

A young male Dachshund dog who came to the animal hospital was diagnosed with conjunctivitis on clinical examination. Methicillin-resistant Staphylococcus pseudintermedius was identified as a result of culture and bacteriological examination of the conjunctival swab, and then antimicrobial susceptibility test. Methicillin resistant S. pseudintermedius identified with the VITEK-II Compact device was also confirmed by molecular methods so that susceptible antibiotics were selected for the treatment of the patient and reported. In accordance with the antimicrobial susceptibility results, the patient was treated with an eye drop preparation containing neomycin. This is the first report of a canine conjunctivitis caused by multidrug-methicillin …


Characteristics Of Extended-Spectrum Beta-Lactamase (Esbl)- Producing Escherichia Coli Associated With Antimicrobial Use In Captive Wild Animals, Montira Yossapol, Jinnapat Imidom, Kannarun Sakhorn, Pimpatcha Thanomwat, Sarawut Sonrit, Siraphop Labmala, Tarid Purisotayo, Natapol Pumipuntu, Justice Opare Odoi, Adithep Konputtar Aug 2024

Characteristics Of Extended-Spectrum Beta-Lactamase (Esbl)- Producing Escherichia Coli Associated With Antimicrobial Use In Captive Wild Animals, Montira Yossapol, Jinnapat Imidom, Kannarun Sakhorn, Pimpatcha Thanomwat, Sarawut Sonrit, Siraphop Labmala, Tarid Purisotayo, Natapol Pumipuntu, Justice Opare Odoi, Adithep Konputtar

The Thai Journal of Veterinary Medicine

Antimicrobial agents are a cause of the increase in antimicrobial-resistant (AMR) bacteria. We investigated the prevalence and characteristics of extended-spectrum beta-lactamase (ESBL)-producing bacteria in captive wild animals before and after exposure to antimicrobial agents. Sixty-six fecal samples were collected from captive animals (spotted deer, Rusa deer, geese, chickens, rabbits, and guinea pigs) at the Mahasarakham University Mini Zoo in Thailand on three sampling occasions: October 2021, January 2022, and April 2022. Using MacConkey agar supplemented with cefotaxime, ESBL-producing Escherichia coli (ESBL-Ec) was isolated and subjected to antimicrobial susceptibility tests and genetic analysis. The results showed a high prevalence of ESBL-Ec …


The Use Of Fourier-Transformed Infrared Spectroscopy With An Infrared Biotyper To Establish Classifiers For Major Serogroups Of Moraxella Bovis Based On Spectral Profiles, Jordyn Bailey Schommer Aug 2024

The Use Of Fourier-Transformed Infrared Spectroscopy With An Infrared Biotyper To Establish Classifiers For Major Serogroups Of Moraxella Bovis Based On Spectral Profiles, Jordyn Bailey Schommer

Honors Program: Senior Projects (Public)

A classifier tool was created to identify major serogroups of Moraxella bovis based on spectral profiles collected from bacterial cells through the use of Fourier transformed infrared spectroscopy. M. bovis strains were selected from a group of previously sequenced and genotyped isolates, which provided the pilin sequence type for each isolate. The obtained spectroscopic profiles were analyzed through artificial neural networks to create a classifier tool that could identify the PilA type for unknown strains. Once a sufficient spectral library was obtained, the isolates were split into a training and a validation group, each containing spectra from isolates of five …


Understanding The Role Of The Microbiome In Infectious Disease, Developing Surveillance Tools, And Engineering Direct Fed Microbials To Improve Animal Health, Alison Clare (Bartenslager) Neujahr Aug 2024

Understanding The Role Of The Microbiome In Infectious Disease, Developing Surveillance Tools, And Engineering Direct Fed Microbials To Improve Animal Health, Alison Clare (Bartenslager) Neujahr

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

With the ever-increasing demand for animal protein and the continual need for the assurance of proper animal welfare, investigations of preventative strategies for diseases is greatly needed. Specifically in the cattle industry, infectious bovine keratoconjunctivitis (IBK), commonly known as pinkeye, causes a large economic loss to the producer. However, effective mitigation strategies are lacking. Partly, this is due to the lack of studies investigating the ocular microbiome. Therefore, studies investigating the bovine ocular microbiome are greatly needed to better understand IBK disease etiology. To this end, we investigated the changes in the ocular microbiome in animals before, during and after …