Medicine and Health Sciences Commons^™

Design, Construction, And Testing Of Recombinant Dna-Based Vaccines For Protection Against Salmonella Enterica Subspecies Enterica Serovar Javiana, Ashley Edwards

LSU Doctoral Dissertations

In the United States, Salmonella Javiana is among the top 5 most common nontyphoidal Salmonella serotypes, with a 325% increase in infection rate since 1970. Globally, nontyphoidal Salmonella leads to approximately 93.8 million illnesses and 155,000 deaths annually, with disproportionate impacts in developing countries. In the United States alone, these infections lead to over $4 billion in costs, the majority of which are attributed to those expenses incurred from mortalities. The zoonotic nature of nontyphoidal Salmonellae and their ability to survive on and within vegetation mean huge economic burden potential for various agricultural industries as well, especially since some of …

Taxonomic Classification Of Viral And Bacterial Dna Following 2021 Avian Mass Mortality Event, Tessa Baillargeon

Honors Theses and Capstones

From May through July 2021, an unusual mortality event occurred along the eastern coast and Midwest of the United States. Thousands of birds, mostly from the order Passeriformes, were part of the die-off including blue jays (Cyanocitta cristata), common grackles (Quiscalus quiscula), European starlings (Sturnus vulgaris), American robins (Turdus migratorius). Clinical signs included crusted eyes, swollen conjunctiva, otitis, seizures, and ataxia.

The New Hampshire Veterinary Diagnostic Laboratory (NHVDL) received over 100 affected birds from various collaborators throughout the United States including Washington DC, NJ, CT, MD, and OH. Given the timing and geologic …

Roles Of Nad In Dna Repair And Response To Oxidative Stress, Micah Forbush

Student Research Symposium

It has become a common trend for people to start their families at a later age, often due to lifestyle choices like achieving career goals first and waiting to achieve financial stability. Along with this trend of increasing parental age comes another, the decrease in fertility. While it is well established that female fertility declines significantly with age, current research is showing that male fertility may be impacted just as much. NAD (Nicotinamide Adenine Dinucleotide) is an important biochemical cofactor in most metabolic reactions, and importantly, is it also essential for DNA repair. As age increases in humans, the amount …

Molecular And Antigen Detection Of Dirofilaria Immitis Infection In Client-Owned Cats In Bangkok, Thailand, Sukullaya Ritthikulprasert, Pipat Jirapiti, Siwaporn Pengpis

The Thai Journal of Veterinary Medicine

Feline heartworm disease, caused by Dirofilaria immitis infection, can be potentially fatal to cats. Screening for the infection in cats is important in endemic areas. Clinical utility of molecular techniques for diagnosis of feline heartworm disease is not clearly determined. The objective of this study was to evaluate whether a polymerase chain reaction (PCR) assay could be used for detection of D. immitis infection in cats that were concurrently tested for D. immitis antigen. Blood samples were collected from 100 client-owned cats in a veterinary teaching hospital. Whole blood samples were tested for D. immitis antigen and extracted for total …

The Ability Of Bull And Stallion Thawed Spermatozoa Refrozen Without Cryoprotectants To Activate Intra- And Interspecies Oocytes, Jose Len Yin

LSU Doctoral Dissertations

Semen cryopreservation has allowed the establishment of genome banks and the large scale propagation of species. The development of simple techniques to cryopreserve semen or alternatives to efficiently use cryopreserved semen from males of valuable genetics that have become infertile will permit continuous propagation of the genetics from these males and may serve as a model for preservation and propagation of endangered species. Sperm cryopreservation without cryoprotectants is a simple process, and offspring have been produced following intracytoplasmic sperm injection (ICSI); however the ability of frozen-thawed sperm refrozen without the addition of cryoprotectants to activate oocytes following ICSI was unknown. …

Recurrent Streptococcus Equi Subsp. Zooepidemicus Bacteremia In An Infant, Joshua R. Watson, Amy Leber, Sridhar Velineni, John F. Timoney, Monica I. Ardura

Maxwell H. Gluck Equine Research Center Faculty Publications

We describe a case of an infant with recurrent bacteremia caused by Streptococcus equi subsp. zooepidemicus, likely transmitted from mother to infant. Our case highlights the importance of an epidemiological history and molecular diagnostics in ascertaining insights into transmission, pathogenesis, and optimal management.

Comparison Of The Equine Reference Sequence With Its Sanger Source Data And New Illumina Reads, Jovan Rebolledo-Mendez, Matthew S. Hestand, Stephen J. Coleman, Zheng Zeng, Ludovic Orlando, James N. Macleod, Ted Kalbfleisch

Maxwell H. Gluck Equine Research Center Faculty Publications

The reference assembly for the domestic horse, EquCab2, published in 2009, was built using approximately 30 million Sanger reads from a Thoroughbred mare named Twilight. Contiguity in the assembly was facilitated using nearly 315 thousand BAC end sequences from Twilight's half brother Bravo. Since then, it has served as the foundation for many genome-wide analyses that include not only the modern horse, but ancient horses and other equid species as well. As data mapped to this reference has accumulated, consistent variation between mapped datasets and the reference, in terms of regions with no read coverage, single nucleotide variants, and small …

Annotation Of The Protein Coding Regions Of The Equine Genome, Matthew S. Hestand, Theodore S. Kalbfleisch, Stephen J. Coleman, Zheng Zeng, Jinze Liu, Ludovic Orlando, James N. Macleod

Veterinary Science Faculty Publications

Current gene annotation of the horse genome is largely derived from in silico predictions and cross-species alignments. Only a small number of genes are annotated based on equine EST and mRNA sequences. To expand the number of equine genes annotated from equine experimental evidence, we sequenced mRNA from a pool of forty-three different tissues. From these, we derived the structures of 68,594 transcripts. In addition, we identified 301,829 positions with SNPs or small indels within these transcripts relative to EquCab2. Interestingly, 780 variants extend the open reading frame of the transcript and appear to be small errors in the equine …

Genome-Wide Analysis Of The Variation In Host Genetics In Response To Experimental Challenges With Porcine Circovirus 2b, Taylor B. Engle

Department of Animal Science: Dissertations, Theses, and Student Research

Porcine circovirus is the primary causative agent responsible for inducing a group of associated diseases known as porcine circovirus associated diseases (PCVAD), which can have detrimental effects on production efficiency as well as lead to mortality. The variation in host genetics plays a role in the ability to initiate an effective immune response. The objective of this research was to identify major genetic variants and genes that influence immune response and PCVAD susceptibility. Commercial crossbred pigs (n=974) were experimentally infected with a PCV2b strain to analyze genetic sources of variation in PCVAD susceptibility. The strain used for experimental infection was …

Svsxp: A Strongylus Vulgaris Antigen With Potential For Prepatent Diagnosis, Ulla V. Andersen, Daniel K. Howe, Sriveny Dangoudoubiyam, Nils Toft, Craig R. Reinemeyer, Eugene T. Lyons, Susanne N. Olsen, Jesper Monrad, Peter Nejsum, Martin K. Nielsen

Veterinary Science Faculty Publications

BACKGROUND: Strongyle parasites are ubiquitous in grazing horses. Strongylus vulgaris, the most pathogenic of the large strongyles, is known for its extensive migration in the mesenteric arterial system. The lifecycle of S. vulgaris is characterised by a long prepatent period where the migrating larvae are virtually undetectable as there currently is no test available for diagnosing prepatent S. vulgaris infection. Presence of S. vulgaris larvae in the arterial system causes endarteritis and thrombosis with a risk of non-strangulating intestinal infarctions. Emergence of anthelmintic resistance among cyathostomins has led to recommendations of reduced treatment intensity by targeting horses that exceed a …

Oncogenic Viruses And Mechanisms Of Oncogenesis, Murat Şevi̇k

Turkish Journal of Veterinary & Animal Sciences

In this article, current information about oncogenic DNA and RNA viruses and their oncogenesis mechanisms that cause tumors and cancers in animals and humans is presented.

Development Of A Robust Genetic Test For Hyperkalemic Periodic Paralysis (Hypp) In Quarter Horses, Samantha Traver

Honors Theses

A single nucleotide substitution in a region of the skeletal muscle sodium channel gene (SCN4A) is known to cause an equine genetic disorder known as Hyperkalemic Periodic Paralysis (HYPP). The clinical effects of this disorder range from little or no symptoms to frequent episodes of muscle tremors, weakness, and/or complete collapse. Oligonucleotide primer pairs were designed for both the wild type and mutant alleles of the SCN4A gene for use in Amplification Refractory Mutation System-PCR (ARMS-PCR). These primers were tested with genomic DNA isolated from whole blood, saliva swabs, and hair of individual horses. It was determined that horse hair …

Rapid Isolation Of Dna From The Mucus Of Asian Arowana (Scleropages Formosus, Osteoglossidae), Nantarika Chansue

The Thai Journal of Veterinary Medicine

Owing to arowana being listed in CITES, DNA diagnostics should not rely on conventional methods of obtaining tissue samples. A non-invasive method of obtaining material containing DNA has been developed. Mucus samples for DNA isolation can be obtained by cotton swabbing the arowana body surface with subsequent purification of DNA fragments by using phenol/chloroform. DNA sample quality is assessed by UV absorbancy at wave lengths of 260 nm and 280 nm, as well as by calculating the absorbancy ratio involving 260 nm/280 nm results in order to determine DNA sample quality and quantity. Electrophoresis is employed to assess DNA quantity …

A Missense Mutation In Pmel17 Is Associated With The Silver Coat Color In The Horse, Emma Brunberg, Leif Andersson, Gus Cothran, Kaj Sandberg, Sofia Mikko, Gabriella Lindgren

Veterinary Science Faculty Publications

BACKGROUND: The Silver coat color, also called Silver dapple, in the horse is characterized by dilution of the black pigment in the hair. This phenotype shows an autosomal dominant inheritance. The effect of the mutation is most visible in the long hairs of the mane and tail, which are diluted to a mixture of white and gray hairs. Herein we describe the identification of the responsible gene and a missense mutation associated with the Silver phenotype.

RESULTS: Segregation data on the Silver locus (Z) were obtained within one half-sib family that consisted of a heterozygous Silver colored stallion with 34 …

Proto-Oncogenes Of Genomic Dna In Normal Thai Domestic Animal, Achariya Sailasuta, Ted Tesaprateep, Boonmee Sunyasootcharee, Susumu Tateyama, Ryoji Yamaguchi, Dai Nosaka, Noriaki Miyoshi

The Thai Journal of Veterinary Medicine

The proto-oncogenes homologous to the c-myc, c-ros-1, c-yes-1, and v-Ki-ras oncogenes of genomic DNAs in buffaloes, dogs, cats and ducks were investigated with Southern blot hybridization. High molecular-weight-genomic DNAs in each of the animals animals contained proto-oncogenes showing more than 65% homology of the proto-oncogenes differed in both number and approximate molecular weight: i.e. one or two bands at 1.6 to 18.0 kilobase (kb) in the c-myc probe, one band at 1.1 to 15.0 kb in the c-ros-1 probe, one to five bands at 0.3 to 18.0 kb in the c-yes-1 probe, and one to five bands at 1.6 to …