Medicine and Health Sciences Commons^™

Evaluation Of Oocyte Developmental Competence And Potential Strategies To Improve Oocyte Quality, Min Yang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Assisted reproductive technologies (ARTs) have now been extensively used to promote reproductive efficiency as a fertility treatment not only in human medicine but also animal reproduction. ARTs serve as an important tool to advance the fundamental knowledge of reproductive processes. The quality of female’s eggs defines its ability to undergo maturation, fertilization, and development. This quality is determined by various factors and is crucial for the success of ARTs. Any alternations happening during the egg growth and maturation process can result in the decreased quality, which could have long-lasting effects on development. Improving the developmental efficiency of the egg is …

The Effect Of High Maternal Milk Production During Pregnancy On Neonatal Health And Metabolism, Katelynn Cameron, Maria L. Hoffman Phd

Senior Honors Projects

The efficiency of the dairy industry relies heavily on the production of healthy calves. However, dairy operations experience high rates of calf mortality due to digestive and respiratory issues. One factor that could predispose calves to disease is the effects of maternal programming caused by high maternal milk production during pregnancy. We hypothesized that calves born to high producing dams will exhibit increased oxidative stress as well as increased circulating triglyceride and total cholesterol concentrations. Cows (n = 17) that produced ≥ 14,865 kg of milk during their lactations were classified as high producers. Alternately, cows (n = 18) that …

Immunostimulatory Effects Of Antigen-Conjugated Inp/Zns Quantum Dot Nanoparticles In An Avian Model, Christopher Lyle

Graduate Theses and Dissertations

Due to their unique physicochemical and enhanced immunostimulatory properties, quantum dot (QD) nanoparticles have shown increasing promise in biomedical research applications including bioimaging, drug delivery, and as vaccine adjuvants. Toxicity, however, remains a concern for the use of QD in these applications and thus, there is an increased demand for effective in vitro and in vivo systems to measure the bioactivity of QD. In this study in vitro and in vivo chicken models were used to investigate the effects of QD on innate and adaptive immunity. Chicken macrophage cultures were treated in vitro with QD to measure macrophage activation and …

Fetal Demise And Failed Antibody Therapy During Zika Virus Infection Of Pregnant Macaques, Diogo M. Magnani, Thomas F. Rogers, Nicholas J. Maness, Nathan D. Grubaugh, Nathan Beutler, Varian K. Bailey, Lucas Gonzalez-Nieto, Martin J. Gutman, Núria Pedreño-Lopez, Jaclyn M. Kwal, Michael J. Ricciardi, Tereance A. Myers, Justin G. Julander, Rudolf P. Bohm, Margaret H. Gilbert, Faith Schiro, Pyone P. Aye, Robert V. Blair, Mauricio A. Martins, Kathrine P. Falkenstien, Amitinder Kaur, Christine L. Curry, Esper G. Kallas, Ronald C. Desrosiers, Pascal J. Goldschmidt-Clermont, Stephen S. Whitehead, Kristian G. Andersen, Myrna C. Bonaldo, Andrew A. Lackner, Antonito T. Panganiban, Dennis R. Burton, David I. Watkins

Animal, Dairy, and Veterinary Science Faculty Publications

Zika virus (ZIKV) infection of pregnant women is associated with pathologic complications of fetal development. Here, we infect pregnant rhesus macaques (Macaca mulatta) with a minimally passaged ZIKV isolate from Rio de Janeiro, where a high rate of fetal development complications was observed. The infection of pregnant macaques with this virus results in maternal viremia, virus crossing into the amniotic fluid (AF), and in utero fetal deaths. We also treated three additional ZIKV-infected pregnant macaques with a cocktail of ZIKV-neutralizing human monoclonal antibodies (nmAbs) at peak viremia. While the nmAbs can be effective in clearing the virus from …

In Vivo Structures Of The Helicobacter Pylori Cag Type Iv Secretion System, Yi-Wei Chang, Carrie L. Shaffer, Lee A. Rettberg, Debnath Ghosal, Grant J. Jensen

Veterinary Science Faculty Publications

The type IV secretion system (T4SS) is a versatile nanomachine that translocates diverse effector molecules between microbes and into eukaryotic cells. Here, using electron cryotomography, we reveal the molecular architecture of the Helicobacter pylori cag T4SS. Although most components are unique to H. pylori, the cag T4SS exhibits remarkable architectural similarity to other T4SSs. Our images revealed that, when H. pylori encounters host cells, the bacterium elaborates membranous tubes perforated by lateral ports. Sub-tomogram averaging of the cag T4SS machinery revealed periplasmic densities associated with the outer membrane, a central stalk, and peripheral wing-like densities. Additionally, we resolved pilus-like …

Can Prescribed Fire Reduce Tick Parasitism Of Birds?, Leslie A. Sterling, Kim Medley, Katie Westby, Solný Adalsteinsson

Undergraduate Research Symposium Posters

Tick-borne diseases spread through enzootic transmission cycles that often involve ticks parasitizing bird hosts. Some avian species are competent reservoirs, amplifying the pathogens that cause tick-borne illnesses in humans. Prescribed burns in forests have the potential to reduce tick-borne disease risk if they limit interactions between ticks and infectious wildlife hosts. Although prescribed burns are increasingly being used for a variety of habitat management purposes, little is known about how they affect tick-host interactions. We hypothesize that if prescribed fires reduce tick abundance, then birds in burned forest plots will host fewer ticks than birds in unburned forest plots. Experimental …

Rational Reasoning On Ractopamine: Kentucky Regulators Reach Appropriate Responses To Inconsequential Trace-Level Environmental Substance Identifications, Theodore F. Shults, Kimberly Brewer, Jake Machin, Eric Hamelback, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

No abstract provided.

Paclitaxel Enhances Oncolytic Potential Of Herpes Simplex Virus Type-1 In Cancer Cells, Misagh Naderi

LSU Master's Theses

Taxanes are spindle poisons that bind to and stabilize microtubules resulting in mitotic arrest. Herpes simplex Typ-1 (HSV-1) virions utilize the microtubular network for intracellular transport during both virus entry and virus egress from infected cells. It has been reported previously that taxanes may synergize with oncolytic herpes simplex viruses in the treatment of experimental prostate and breast tumors in mice. Other reports have indicated that taxanes may inhibit viral replication in infected cells. In this study the previously characterized Oncolytic Herpes Simplex Virus type 1 (OSVP), which was constructed in Kousoulas lab was used in conjugation with paclitaxel (taxol) …

Interactions And Pathogen Transmission Between Carnivores In Madagascar, Fidisoa Rasambainarivo

Dissertations

Introduced carnivores exert considerable pressure on native predators through predation, competition and disease transmission. Improved understanding of determinant factors of interactions and pathogen transmission between introduced and endemic wildlife may help to predict disease emergence, avoid pathogen spillover and help control outbreaks. Using non-invasive camera traps, I identified areas where transmission of pathogens might happen through records of shared space-use within a protected area in Eastern Madagascar. I showed that indirect interactions between animals were more likely to occur near the research station which may constitute a disease transmission hotspot for carnivores in the landscape. Secondly, I investigated the associations …

Alternative Techniques For Alfaxalone Anesthesia Induction In Dogs And Cats, Angie Lagos

LSU Master's Theses

Alfaxalone is a neuroactive synthetic steroid (Brewster & Bodor, 1990) that produces anesthetic induction with dose- and speed-dependent cardiorespiratory depression in dogs and cats (Chiu et al. 2016; Warne et al., 2015). At clinical doses in unpremedicated dogs (2 mg kg^-1) and cats (5 mg kg^-1), alfaxalone induces a mild decrease in systemic vascular resistance, systemic blood pressure (Muir et al., 2009; Muir et al., 2008), apnea, hypoventilation, and hypoxemia (Muir et al. 2009; Muir et al., 2008). The cardiorespiratory side effects from alfaxalone induction could be prevented by reducing the total dose of alfaxalone necessary …

An Evaluation Of Pathophysiology And Biomechanics Of Selected Lamenesses In The Horse, Cole Barrett Sandow

LSU Master's Theses

INTRODUCTION-Laminitis and synovitis are two common causes of equine lameness. Laminitis is most often associated with hyperinsulinemia and osteoarthritis is most commonly the result of synovitis. The objective is to evaluate biomechanical and pathophysiologic events regarding laminitis and synovitis.

MATERIALS AND METHODS-The first study evaluated biomechanical effects of insulin on lamellar strength. For this experiment, lamellar explants were harvested, incubated in media only (serving as a control) or media with a high concentration of insulin for 8 hours. After incubation, structural integrity was evaluated with a mechanical testing device. Data included load to failure (N), stress to failure (MPa), elongation …

In Vitro Assay Development As An Alternative To The Use Of Laboratory Animals For Measuring Clostridium Perfingens Type C Toxoid, Lauren M. Wilmes

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

Clostridium perfringens type C produces beta toxin, which is a primary virulence determinate that can cause necrotic enteritis in neonatal animals. Vaccines directed against C. perfringens toxins have shown to be efficacious in preventing disease. However, the production of a commercial vaccine requires not only an efficacious antigen, but also testing methods for quantifying antigens and potency on final product. This research was undertaken to fulfill a need for the reduction in small animal usage to produce and deliver vaccines. The current testing methods are performed in vivo according to the Code of Federal Regulations number 9 (9CFR) United …

Prediction Factors For Release Of Wildlife At A Midwestern Rehabilitation Facility, Abigail E. Smith

Undergraduate Honors Thesis Projects

Wildlife rehabilitation is a large and internationally known field with thousands of rehabilitators around the world. Resources, such as time and money, are extremely limited in rehabilitation facilities and not all animals are candidates for release due to injuries or illnesses that make them unlikely to survive in the wild. Understanding what factors predict release would be useful in focusing limited resources, but there has been little investigation previously. The purpose of this study is to determine what factors affect the survival of mammals and birds at an American Midwest wildlife rehabilitation center. It was found that animals admitted with …

Transmission Potential Of Rickettsia Felis Through Cutaneous Inoculation Of Infectious Flea Feces, Kelsey Porter Legendre

LSU Master's Theses

Rickettsia felis, the causative agent of flea-borne spotted fever, is an emerging pathogen of the transitional group Rickettsiae and an important cause of febrile illness in Africa. Since the organism’s original discovery in the early 1990s, much research has been directed towards elucidating transmission mechanisms within the believed primary host and reservoir, the cat flea (Ctenocephalides felis). However, while a growing number of human cases are being reported throughout the world, a definitive transmission mechanism from arthropod host to vertebrate host resulting in clinical disease has not been found. Several possible mechanisms, including bite of infected arthropods …

Rapid Identification And Typing Of Mycobacterium Avium Complex Using Matrix Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectrometry (Maldi-Tof) Library And Biomarker Based Approaches, Claudia Antonika, John Dustin Loy, Raul Barletta, Michael Collins

UCARE: Research Products

Bacteria associated with the Mycobacterium avium complex (MAC) cause significant problems in animal agriculture and cause large economic losses and morbidity of livestock. Two clinically important subspecies of M. avium are M.avium ssp paratuberculosis (MAP) and M. avium ssp hominissuis (MAH). MAP is the etiologic agent of Johne’s disease, a chronic and fatal enteritis in ruminants, that has been linked to Crohn’s disease in humans.1 MAH has zoonotic potential as it is one of the leading causes of secondary infections in AIDS patients. Identification of M. avium in clinical samples is challenging as they have overlapping host ranges and clinical …

Editorial: Harm And Benefit Of Plant And Fungal Secondary Metabolites In Food Animal Production, Michael D. Flythe

Animal and Food Sciences Faculty Publications

No abstract provided.

Reducing The Risk Of Invasive Pathogens To Wildlife Health In The United States, Edward E. Clark Jr., Marshall Meyers, David Eldon Starling, Brent Stewart, Nathan Stone, Gary Tabor, Jeffrey S. White

National Invasive Species Council

Call to Action

In keeping with action items 4.3.1 and 4.3.2 of the 2016–2018 National Invasive Species Council (NISC) Management Plan, the Wildlife Health Task Team of the Invasive Species Advisory Committee (ISAC) was charged with: 1) identifying the major areas of vulnerability to native wildlife from the introduction and spread of invasive pathogens, and 2) making recommendations to address these vulnerabilities, including through potential changes in statute, regulation, policy, or practice of the relevant agencies.

Promotion Of Lactobacillus Plantarum On Growth And Resistance Against Acute Hepatopancreatic Necrosis Disease Pathogens In White-Leg Shrimp (Litopenaeus Vannamei), Thi Thuy Giang Nguyen, Thi Chinh Nguyen, Montira Leelakriangsak, Thu Thuy Pham, Quoc Hung Pham, Chokchai Lueangthuwapranit, Van Duy Nguyen

The Thai Journal of Veterinary Medicine

Acute hepatopancreatic necrosis disease (AHPND), or early mortality syndrome (EMS), causes high mortality in cultivated penaeid shrimps, which leads to heavy losses for shrimp farming industry. V. parahaemolyticus with a toxin PirAB-encoding extrachromosomal plasmid are considered as common pathogenic agents. The present study aimed to assess the effects of potential probiotics on growth and resistance of shrimp to AHPND infection. Results confirmed typical clinical signs and histopathological features in AHPND-infected shrimps. Among 11 Vibrio isolates from AHPND-infected shrimps, strain XN9 was the most virulent and was identified as V. paraheamolyticus using AP3-based PCR amplification and API 20E kits. In vitro …

Streptococcus Equi Infections In Horses: Guidelines For Treatment, Control, And Prevention Of Strangles—Revised Consensus Statement, A. G. Boyle, John F. Timoney, J. R. Newton, M. T. Hines, A. S. Waller, B. R. Buchanan

Maxwell H. Gluck Equine Research Center Faculty Publications

This consensus statement update reflects our current published knowledge and opinion about clinical signs, pathogenesis, epidemiology, treatment, complications, and control of strangles. This updated statement emphasizes varying presentations in the context of existing underlying immunity and carrier states of strangles in the transmission of disease. The statement redefines the “gold standard” for detection of possible infection and reviews the new technologies available in polymerase chain reaction diagnosis and serology and their use in outbreak control and prevention. We reiterate the importance of judicious use of antibiotics in horses with strangles. This updated consensus statement reviews current vaccine technology and the …

Crossover Feeding Test Of A New Milk Mixture For Giant Panda (Ailuropoda Melanoleuca) Cubs, Zhihe Zhang, Rong Hou, Jingchao Lan, Hairui Wang, Tatsuko Nakao, Zenta Takatsu, Toyokazu Kobayashi, Hiroshi Koie, Hiroshi Kamata, Kiichi Kanayama, Toshi Watanabe

The Thai Journal of Veterinary Medicine

A milk substitute developed in 1988 (OM) has been used to feed giant panda cubs, but its contents do not match those of panda breast milk. OM contains 10% more protein than the breast milk, and so a novel milk substitute (NM) was developed based on breast milk data. NM has the following nutrition: protein, 38%; fat, 40%; carbohydrates, 12% (containing lactose, 7%); ash, 6%; and moisture, 3%; and it also contains lactoferrin, nucleotides, oligosaccharides and docosahexaenoic acid. In order to ensure that NM is safe before it is fed to premature newborns, a plan was made to subject twin …

Effect Of Interferential Current Therapy On Ground Reaction Force In Dogs With Hip Osteoarthritis: A Randomized Placebo Controlled Cross-Over Clinical Trial, Rutaitip Upariputti, Monchanok Vijarnsorn, Sirirat Niyom, Sujitra Boonyong

The Thai Journal of Veterinary Medicine

The aim of this study was to evaluate the effect of interferential current therapy on ground reaction force and orthopedic assessment score of canine patients with hip osteoarthritis. Nine dogs that met the inclusion criteria were enrolled in this study. Each dog received 3 types of treatment: interferential current therapy (IFC), sham current therapy (SHAM), and control treatment (CTR). The order of the treatments for each dog was assigned by block randomization method. A 24-hour interval was applied between each treatment session. Subjective orthopedic assessment and objective force plate gait analysis were used as measurement of clinical improvement in this …

Prevalence Of Bacteremia In Dogs Admitted To An Intensive Care Unit With Intravenous Catheterization, Pattrarat Chanchaithong, Sukullaya Ritthikulprasert

The Thai Journal of Veterinary Medicine

Bacteremia is a common complication in hospitalized patients, and intravenous catheterization is a routine intervention in dogs in intensive care units (ICU). This study aimed to investigate bacteria associated with bacteremia in an ICU of a veterinary teaching hospital during 2013-2014. Fifty dogs admitted to the ICU were included in this study. Twenty-four dogs (48.00%) presented bacteremia by blood culture. Bacterial species were identified, including Klebsiella pneumoniae (8/24), Pseudomonas aeruginosa (7/24), Staphylococcus pseudintermedius (3/24), Escherichia coli (2/24), Bacillus sp. (1/24), Acinetobacter sp. (2/24) and Burkholderia cepacia (1/24). Only five dogs had positive catheter colonization by identical bacterial species with those …

Ophthalmology Snapshot, Nalinee Tuntivanich

The Thai Journal of Veterinary Medicine

No abstract provided.

What Is Your Diagnosis?, Nan Choisunirachon

The Thai Journal of Veterinary Medicine

No abstract provided.

Evaluation Of Symptomatic Improvements Observed By Switching To Alacepril From Other Ace-Inhibitors In Dogs With Mitral Valve Regurgitation, Akiko Uemura, Lina Hamabe, Kazumi Shimada, Miki Shimizu, Ryou Tanaka

The Thai Journal of Veterinary Medicine

Alacepril is an ACE-inhibitor (ACE-I), which has unique properties including peripheral sympathoinhibitory effect and negative chronotropic effect, and it is suspected to have a superior cough suppressive effect in comparison to other ACE-Is. The purpose of the study was to evaluate whether switching to alacepril from other ACE-Is will alleviate the clinical symptoms of congestive heart failure (CHF) caused by mitral valve regurgitation (MR). The prospective clinical study included 73 client-owned dogs with MR that had been treated with ACE-Is other than alacepril for over a period of one month. The ACE-Is were replaced by alacepril and observed for four …

Solexa Sequencing Of Novel And Differentially Expressed Micrornas In Maternal Placenta Of Holstein Cattle With Retained Fetal Membranes, Chengyuan Zheng, Xiao Zou, Yao Liu, Hongjia Lin, Chunhai Luo, Shixin Fu

The Thai Journal of Veterinary Medicine

MicroRNAs (miRNAs) can post-transcriptionally regulate gene expression and play an important role in the development and function of organs and cells in cattle. This study identified novel and differentially expressed miRNAs in the maternal placenta of Holstein cattle with retained fetal membranes (6 cows for each group). The study found 4,596,223 reads that matched the bovine genome in the normal maternal placenta library (5,930,853 reads in total), and found that a total of 4,270,190 reads were present in the retained fetal membrane maternal placenta library (5,367,946 reads in total). In the present study, 36 novel bovine miRNAs were identified in …

Incidence Of Brucellosis In Aborted Animals And Occupationally Exposed Veterinary Professionals Of Bannu, Khyber Pakhtunkhwa, Pakistan, Azmatullah Khan, Muhammad Shafee, Naimatullah Khan, Attaur Rahman, Rafiullah Rafiullah, Ijaz Ali, Imad Khan, Sadeeq Ur Rahman

The Thai Journal of Veterinary Medicine

Brucellosis in animals is a serious global health concern mainly due to its zoonotic nature and association with heavy economic losses. Brucellosis has been reported randomly from different parts of Pakistan; however, the prevalence of brucellosis in animals and humans in Bannu District, as well as overall epidemiological data of the country, is missing. The present study reports on the occurrence of brucellosis in domestic animals and its cross-circulation among occupationally exposed human population in Bannu District, Khyber Pakhtunkhwa, Pakistan. A total of 223 (animals=100, animal handlers=73, veterinary staff=50) serum samples were collected and subjected to serum plate agglutination test …

Effects Of Housefly Larvae (Musca Domestica) Dehydrated Meal On Production Performances And Sensory Properties Of Broiler Meat, Stamen Radulović, Marija Pavlović, Dragan Šefer, Shivani Katoch, Milan Hadži-Milić, Dragoljub Jovanović, Svetlana Grdović, Radmila Marković

The Thai Journal of Veterinary Medicine

The trial included 100 one-day-old broilers, Cobb 500, of both sexes, divided into the two groups, 50 broilers in each. The experiment lasted 42 days and was conducted in three phases: days 1-7, days 8-21 and days 22-42. The control group of broilers (C) was fed a mixture of standard composition (basal diet), while the experimental group (O-I) received the same diet but with the addition of dehydrated housefly larvae in the amount of 5% (% as fed basis) in the starter diet and 4% in grower and finisher diets. Production results (body weight, body weight gain, feed consumption and …

Influence Of Heat Stress On Pregnancy Rate Of Beef Cattle Heifers And Cows Using Ovsynch Plus Cidr Followed By Timed Artificial Insemination In Thailand, Jatuporn Kajaysri, Anuwat Wattananorasate

The Thai Journal of Veterinary Medicine

This study aimed to evaluate the pregnancy rate in beef cattle heifers and cows in Thailand under different heat stress conditions using the Ovsynch plus controlled internal drug release (CIDR) followed by timed artificial insemination (TAI) protocol. Eighty-one beef heifers and ninety-five postpartum cows were tested. These cattle were divided into three groups. Group 1 (29 heifers and 33 cows) was examined in winter, while Group 2 (25 heifers and 30 cows) and Group 3 (27 heifers and 32 cows) were examined in summer and rainy season, respectively. All cattle were treated with Ovsynch plus CIDR for 7 days followed …

Mutations In Qrdrs Of Dna Gyrase And Topoisomerase Iv Genes In Nalidixic Acid And Ciprofloxacin-Resistant Salmonella Enterica Isolated From Chicken Meat, Pork And Humans, Nuananong Sinwat, Jiratchaya Poungseree, Sunpetch Angkittitrakul, Rungtip Chuanchuen

The Thai Journal of Veterinary Medicine

Twenty-eight nalidixic acid-resistant Salmonella isolates originated from chicken meat, pork and humans were examined for mutation in the quinolone resistance determining region (QRDR) of gyrA, gyrB, parC and parE genes. Four single-point mutations in gyrA (i.e. C248A, C248T, G259T and G259A) leading to amino acid substitutions Ser83Tyr, Ser83Phe, Asp87Tyr and Asp87Asn in GyrA, respectively, were identified in 11 quinolone-resistant strains. Amino acid change at position Ser83 was most frequently identified. Resistance to nalidixic acid was not always associated with resistance to ciprofloxacin. The presence of mutations in GyrA did not well correlate with ciprofloxacin resistance phenotype. No mutations were observed …