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Articles 2401 - 2430 of 2581
Full-Text Articles in Medicine and Health Sciences
Biochemical And Mutational Analysis Of The Histidine Residues Of Staphylococcal Enterotoxin A., M Hoffman, M Tremaine, J Mansfield, M Betley
Biochemical And Mutational Analysis Of The Histidine Residues Of Staphylococcal Enterotoxin A., M Hoffman, M Tremaine, J Mansfield, M Betley
Manuscripts, Articles, Book Chapters and Other Papers
The goal of this study was to examine the role of histidine residues in the biological activities of staphylococcal enterotoxin A (SEA). Carboxymethylated SEA was unable to stimulate murine T-cell proliferation but was resistant to monkey stomach lavage fluid degradation, suggesting that native conformation was intact. Site-directed mutagenesis of the histidine residues of SEA was subsequently performed. SEA-H44A (SEA with histidine 44 replaced with alanine), SEA-H44D, SEA-H50A, SEA-H50D, SEA-H114A, SEA-H114D, SEA-H187A, and SEA-H187D retained superantigen and emetic activities, whereas SEA-H225A and SEA-H225D were defective in the ability to stimulate T-cell proliferation. These mutants were unable to compete with SEA for …
Comparison Of Gross Pathology, Histopathology, And Mycobacterial Culture For The Diagnosis Of Tuberculosis In Elk (Cervus Elaphus), Elizabeth B. Rohonczy, Arumuga V. Balachandran, Thomas W. Dukes, Janet B. Payeur, Jack C. Rhyan, Dennis A. Saari, Terry L. Whiting, Susan H. Wilson, Jerald L. Jarnagin
Comparison Of Gross Pathology, Histopathology, And Mycobacterial Culture For The Diagnosis Of Tuberculosis In Elk (Cervus Elaphus), Elizabeth B. Rohonczy, Arumuga V. Balachandran, Thomas W. Dukes, Janet B. Payeur, Jack C. Rhyan, Dennis A. Saari, Terry L. Whiting, Susan H. Wilson, Jerald L. Jarnagin
Michigan Bovine Tuberculosis Bibliography and Database
Using the isolation of Mycobacterium bovis as the reference standard, this study evaluated the sensitivity, specificity and kappa statistic of gross pathology (abattoir postmortem inspection), histopathology, and parallel or series combinations of the two for the diagnosis of tuberculosis in 430 elk and red deer. Two histopathology interpretations were evaluated: histopathology I, where the presence of lesions compatible with tuberculosis was considered positive, and histopathology II, where lesions compatible with tuberculosis or a select group of additional possible diagnoses were considered positive. In the 73 animals from which M. bovis was isolated, gross lesions of tuberculosis were most often in …
The Pharmacologic Effects Of Isoxsuprine, J. Daniel Harkins, Thomas Tobin
The Pharmacologic Effects Of Isoxsuprine, J. Daniel Harkins, Thomas Tobin
Maxwell H. Gluck Equine Research Center Faculty Publications
Isoxsuprine is a therapeutic medication used to treat navicular disease and other lower limb problems in horses and is one of the more frequently detected therapeutic agents in racing horses. In crossover studies, horses were administered intravenous and oral isoxsuprine to determine the character and duration of pharmacological effects. Following intravenous administration, isoxsuprine significantly increased heart rate, spontaneous activity, and sweat production. There was an apparent, although statistically insignificant, increase in cutaneous blood flow. Skin temperature decreased below control values, and there was a significant decrease in core temperature. Isoxsuprine also reduced smooth muscle tone. In contrast, after oral dosing, …
Cytokines In Pigs Bred Selectively For High And Low Immune Response [Abstract Only], Jay Reddy, Bruce N. Wilkie, Bonnie A. Mallard, Soren Rosendal
Cytokines In Pigs Bred Selectively For High And Low Immune Response [Abstract Only], Jay Reddy, Bruce N. Wilkie, Bonnie A. Mallard, Soren Rosendal
Jay Reddy Publications
Yorkshire pigs have been bred for high (H) and low (L) immune response based on selection for multiple antibody (Ab) and cell mediated immune response traits. High responders have better production and larger litter size when compared with controls and low responders. The ability of high and low line pigs to resist M. hyorhinis infection has been tested. The high responders had more rapid and higher Ab response and the severity of the disease was less, as judged by clinical and postmortem signs. However, arthritis was found to be relatively more severe in high responders. We hypothesized that the immune …
Bovine Cell Line Resistant To In Vtro Infection By Bovine Viral Darrheavirus And All Other Known Pestiviruses, Ruben O. Donis, Eduardo F. Flores
Bovine Cell Line Resistant To In Vtro Infection By Bovine Viral Darrheavirus And All Other Known Pestiviruses, Ruben O. Donis, Eduardo F. Flores
School of Veterinary and Biomedical Sciences: Faculty Publications
Bovine cell line resistant to infection by the pestiviruses Bovine Viral Diarrhea Virus (BVDV), Hog Cholera Virus (HCV) and Border Disease Virus (BDV) and all progeny and mutants thereof. A bovine cell line (CRIB) that is resistant to infection by cytopathic and non-cytopathic BVDV and by other Pestiviruses due to a stable, recessive genetic defect which blocks infection at the level of viral entry.
Microevolutionary Patterns And Molecular Markers: The Genetics Of Geographic Variation In Ascaris Suum, Steven A. Nadler
Microevolutionary Patterns And Molecular Markers: The Genetics Of Geographic Variation In Ascaris Suum, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Molecular markers have been used only rarely to characterize the population genetic structure of nematodes. Published studies have suggested that different taxa may show distinct genetic architectures. Isoenzyme and RAPD markers have been used to investigate geographic variation of Ascaris suum at the level of infrapopulations (nematodes within individual hosts), within localities, and among geographic regions. Independent estimates of genetic differentiation among population samples based on isoenzyme and RAPD data showed similar patterns and substantial correlation. Heterozygote deficiencies within infrapopulations and large values for inbreeding coefficients among infrapopulations suggested that the composition of these populations was not consistent with a …
Phage Infection, Transfection And Transformation Of Mycobacterium Avium Complex And Mycobacterium Paratuberculosis, Ellen M. Foley-Thomas, Diane L. Whipple, Luiz M. Bermudez, Raul G. Barletta
Phage Infection, Transfection And Transformation Of Mycobacterium Avium Complex And Mycobacterium Paratuberculosis, Ellen M. Foley-Thomas, Diane L. Whipple, Luiz M. Bermudez, Raul G. Barletta
School of Veterinary and Biomedical Sciences: Faculty Publications
Mycobacterium avium complex strains and Mycobacterium paratuberculosis are closely related intracellular pathogens affecting humans and animals. M. avium complex infections are a leading cause of morbidity and mortality in AIDS patients, and M. paratuberculosis is the agent of Johne's disease in ruminants. Genetic manipulation of these micro-organisms would facilitate the understanding of their pathogenesis, the construction of attenuated vaccine strains and the development of new drugs and treatment methods. This paper describes the replication of mycobacterial shuttle phasmids and plasmids, and the expression of the firefly luciferase reporter gene in M. avium complex and M. paratuberculosis. The mycobacteriophage TM4 …
Cervical Cancer: Is Herpes Simplex Virus Type Ii A Cofactor?, Clinton J. Jones
Cervical Cancer: Is Herpes Simplex Virus Type Ii A Cofactor?, Clinton J. Jones
School of Veterinary and Biomedical Sciences: Faculty Publications
Approximately 1.6% of all women will develop cancer of the cervix during their lifetime (4). Cervical cancer is the second leading type of cancer in women and accounts for approximately one-sixth of all cancer deaths in females. In many ways, cervical cancer behaves as a sexually transmitted disease. The major risk factors associated with cervical cancer are the early onset of sexual intercourse, multiple sexual partners, and/or sexual contact with promiscuous partners (66, 94). The disease is composed of several pathological stages ranging from cervical intraepithelial neoplasia (CIN) to invasive squamous carcinoma. Substantial evidence suggests that CIN is a precursor …
Identification Of Gene Products Encoded By The Latency-Related Gene Of Bovine Herpesvirus 1, Ashfaque Hossain, L. M. Schang, Clinton J. Jones
Identification Of Gene Products Encoded By The Latency-Related Gene Of Bovine Herpesvirus 1, Ashfaque Hossain, L. M. Schang, Clinton J. Jones
School of Veterinary and Biomedical Sciences: Faculty Publications
Bovine herpesvirus 1 (BHV-1) establishes a latent infection in sensory ganglionic neurons of infected animals. Expression of latency-related (LR) gene products is controlled by a 980-bp fragment (LR promoter). DNA sequence analysis revealed that two major open reading frames (ORFs) are in the LR gene. Antibodies directed against both ORFs were generated in rabbits by using synthetic peptides. Antibody P2, which is directed to sequences near the amino terminus of ORF 2, recognized a 41-kDa protein in lytically infected cells, suggesting that ORF 2 encodes a protein. When the LR gene was inserted into a mammalian expression vector and subsequently …
EnterohemorrhagicEscherichia Coli O157:H7 Requires Intimin To Colonize The Gnotobiotic Pig Intestine And To Adhere To Hep-2 Cells, Marian L. Mckee, Angela R. Melton-Celsa, Rodney A. Moxley, David H. Francis, Alison D. O'Brien
EnterohemorrhagicEscherichia Coli O157:H7 Requires Intimin To Colonize The Gnotobiotic Pig Intestine And To Adhere To Hep-2 Cells, Marian L. Mckee, Angela R. Melton-Celsa, Rodney A. Moxley, David H. Francis, Alison D. O'Brien
School of Veterinary and Biomedical Sciences: Faculty Publications
In a previous study, enterohemorrhagic Escherichia coli (EHEC) O157:H7 with a deletion and insertion in the eaeA gene encoding intimin was used to establish that intimin is required for the organism to attach to and efface microvilli in the piglet intestine (M. S. Donnenberg, S. Tzipori, M. L. McKee, A. D. O’Brien, J. Alroy, and J. B. Kaper, J. Clin. Invest. 92:1418–1424, 1993). However, in the same investigation, a role for intimin in EHEC adherence to HEp-2 cells could not be definitively demonstrated. To analyze the basis for this discrepancy, we constructed an in-frame deletion of eaeA and compared the …
Animal Activist Urges Vets To Be Activists Too, Henry Spira
Animal Activist Urges Vets To Be Activists Too, Henry Spira
Commentaries and Editorials
No abstract provided.
Heterozygosity Mapping Of Partially Congenic Lines: Mapping Of A Semidominant Neurological Mutation, Wheels ( Whl), On Mouse Chromosome 4, Patrick M. Nolan, Patricia J. Sollars, Barbara A. Bohne, Warren J. Ewens, Gary E. Pickard, Maja Bucan
Heterozygosity Mapping Of Partially Congenic Lines: Mapping Of A Semidominant Neurological Mutation, Wheels ( Whl), On Mouse Chromosome 4, Patrick M. Nolan, Patricia J. Sollars, Barbara A. Bohne, Warren J. Ewens, Gary E. Pickard, Maja Bucan
School of Veterinary and Biomedical Sciences: Faculty Publications
We identified a semidominant, chemically induced, mouse use mutation with a complex array of abnormal behaviors including bidirectional circling and hyperactivity, abnormal circadian rhythmicity and abnormal responses to light. In this report, we genetically and phenotypically characterized the circling/ waltzing component of the abnormal behavior. We mapped the locus controlling this trait by heterozygosity mapping of partially congenic lines carrying the mutagenized chromosome outcrossed to different inbred strains for three generations. Analysis of 68 PCR-based markers in 13 affected individuals indicated that the mutant locus, named Wheels (Whl), resides in the subcentromeric portion of mouse chromosome 4. The …
Restoration Of Circadian Behavior By Anterior Hypothalamic Heterografts, Patricia J. Sollars, Daniel P. Kimble, Gary E. Pickard
Restoration Of Circadian Behavior By Anterior Hypothalamic Heterografts, Patricia J. Sollars, Daniel P. Kimble, Gary E. Pickard
School of Veterinary and Biomedical Sciences: Faculty Publications
The suprachiasmatic nucleus (SCN) of the anterior hypothalamus (AH) is a circadian oscillator and an important component of the mammalian circadian system. To determine whether the SCN is the dominant circadian pacemaker responsible for generating a species-typical characteristic of circadian rhythms [i.e., period length (T)], neural transplantation was conducted using fetal AH donors of different species and SCN-lesioned (SCNx) hosts. The circadian behavior of each of the three donor species is clearly distinguishable by its species-typical T. The extent of SCN pacemaker autonomy was assessed by noting whether the period of the restored circadian rhythm following heterograft transplantation was characteristic …
Frequency Distribution Of Post Race Urine Ph From Standardbreds Compared With Thoroughbreds: Research And Regulatory Significance, S. D. Stanley, R. A. Sams, J Daniel Harkins, G. D. Mundy, J. Boyles, W. E. Woods, Thomas Tobin
Frequency Distribution Of Post Race Urine Ph From Standardbreds Compared With Thoroughbreds: Research And Regulatory Significance, S. D. Stanley, R. A. Sams, J Daniel Harkins, G. D. Mundy, J. Boyles, W. E. Woods, Thomas Tobin
Maxwell H. Gluck Equine Research Center Faculty Publications
The concentration of drugs and drug metabolites in urine samples of racing horses is strongly influenced by urine pH(Tobin, 1981), depending on whether the drugs are weak acids or weak bases. Drugs that are weak acids tend to concentrate in besic urine. In contrast, drugs that are weak bases tend to concentrate in acidic urine. These relationships have a well-established theoretical basis (the Henderson-Hasselbalch relationship) and have been demonstrated repeatedly in experimental animals and man (Tobin, 1981). More recently, evidence suggests that these relationships also occur with clinically and forensically significant agents in equine urine (Wood, et al. 1990; Gerken …
Bovine Tuberculosis In A Free-Ranging Mule Deer (Odocoileus Hemionus) From Montana, Jack Rhyan, Keith Aune, Brian Hood, Ryan Clarke, Janet Payeur, Jerald Jamagin, Larry Stackhouse
Bovine Tuberculosis In A Free-Ranging Mule Deer (Odocoileus Hemionus) From Montana, Jack Rhyan, Keith Aune, Brian Hood, Ryan Clarke, Janet Payeur, Jerald Jamagin, Larry Stackhouse
Michigan Bovine Tuberculosis Bibliography and Database
A survey of 41 mule deer (Odocolleus hemionus) and three white-tailed deer (O. virginianus) for bovine tuberculosis was conducted on a Montana (USA) cattle ranch from 2 November 1993 through January 1994. Gross and microscopic lesions typical of tuberculosis were present in tonsil and lymph nodes of the head, thorax, and abdomen of one adult female mule deer. Additionally, a single microgranuloma considered morphologically suggestive of tuberculosis was present in one lymph node of the head of a second mule deer. Mycobacterial isolates from lymph nodes of the head and thorax of the first deer were …
Infections Associated With Bartonella Species In Persons Infected With Human Immunodeficiency Virus, Russell L. Regnery, James E. Childs, Jane E. Koehler
Infections Associated With Bartonella Species In Persons Infected With Human Immunodeficiency Virus, Russell L. Regnery, James E. Childs, Jane E. Koehler
Zoonotics and Wildlife Disease: Publications
Two members of the genus Bartonella, Bartonella quintana (formerly Rochalimaea quintana) and Bartonella henselae (formerly Rochalimaea henselae), have recently been recognized as agents of severe or fatal disease in patients infected with human immunodeficiencyv irus (HIV). The development of infection with B. henselae in HIV-infected individuals has been associated with traumatic contact with cats (scratches or bites), and domestic cats have been identified as a major reservoir for this organism. Specific information regarding the transmission of B. henselae to humans is not yet available, but common-sense precautions that minimize exposure to cat-associated organisms are appropriate. Preliminary accounts suggest that …
A Case-Control Study Of Hantavirus Pulmonary Syndrome During An Outbreak In The Southwestern United States, Paul S. Zeitz, Jay C. Butler, James E. Cheek, Michael C. Samuel, James E. Childs, Lee A. Shands, Richard E. Turner, Ronald E. Voorhees, John Sarisky, Pierre E. Rollin, Thomas G. Ksiazek, Louisa Chapman, Susan E. Reef, Kenneth K. Komatsu, Craig Dalton, John W. W. Krebs, Gary O. Maupin, Kenneth Gage, C. Mack Sewell, Robert F. Breiman, C. J. Peters
A Case-Control Study Of Hantavirus Pulmonary Syndrome During An Outbreak In The Southwestern United States, Paul S. Zeitz, Jay C. Butler, James E. Cheek, Michael C. Samuel, James E. Childs, Lee A. Shands, Richard E. Turner, Ronald E. Voorhees, John Sarisky, Pierre E. Rollin, Thomas G. Ksiazek, Louisa Chapman, Susan E. Reef, Kenneth K. Komatsu, Craig Dalton, John W. W. Krebs, Gary O. Maupin, Kenneth Gage, C. Mack Sewell, Robert F. Breiman, C. J. Peters
Zoonotics and Wildlife Disease: Publications
In May 1993, an outbreak of hantavirus pulmonary syndrome( HPS) occurred in the south-western United States. A case-control study determined risk factors for HPS. Seventeen case-patients were compared with 3 groups of controls: members of case-patient households( household controls), members of neighboring households( near controls), and members of randomly selected households ≥ 24 km away ( far controls). Investigators trapped more small rodents at case households than at near ( P = .03) or far control households( P = .02). After the number of small rodents was controlled for,case-patients were more likely than household controls to hand plow (odds ratio …
Guidelines For Working With Rodents Potentially Infected With Hantavirus, James N. Mills, Terry L. Yates, James E. Childs, Robert R. Parmenter, Thomas G. Ksiazek, Pierre E. Rollin, C.J. Peters
Guidelines For Working With Rodents Potentially Infected With Hantavirus, James N. Mills, Terry L. Yates, James E. Childs, Robert R. Parmenter, Thomas G. Ksiazek, Pierre E. Rollin, C.J. Peters
Zoonotics and Wildlife Disease: Publications
Because of the high morbidity and mortality associated with hantavirus pulmonary syndrome and the possibility of aerosol transmission of hantaviruses, persons handling known reservoir species in the field, laboratory, or classroom should take special precautions to minimize the risk of infection. We provide specific guidelines for personal safety while trapping, handling and releasing, transporting, sampling, and performing necropsy on potentially infected rodents or teaching field classes in areas occupied by reservoir species. Special consideration should be given to respiratory protection, choice and use of disinfectants, decontamination of instruments and traps, proper disposal of infectious wastes, and preservation and shipment of …
Rabies--Epidemiology, Prevention, And Future Research, John W. Krebs, Mark L. Wilson, James E. Childs
Rabies--Epidemiology, Prevention, And Future Research, John W. Krebs, Mark L. Wilson, James E. Childs
Zoonotics and Wildlife Disease: Publications
Rabies is caused by a single-stranded, negative-sense RNA virus, maintained in nature by a variety of animal reservoirs. Rabies virus infects the central nervous system, resulting in progressive encephalopathy and ultimately death in an infected human. Globally, the risk of contracting rabies for humans is greatest in regions of the developing world where dog rabies is enzootic. Where rabies in dogs has been eliminated or otherwise controlled through vaccination programs, the disease can be maintained by wildlife. Wildlife primarily involved in maintenance of transmission cycles are carnivores and bats. Persons having frequent contact with wildlife, such as mammalogists, are at …
Rodent-Borne Hemorrhagic Fever Viruses: A Special Risk For Mammalogists?, James E. Childs, James N. Mills, Gregory E. Glass
Rodent-Borne Hemorrhagic Fever Viruses: A Special Risk For Mammalogists?, James E. Childs, James N. Mills, Gregory E. Glass
Zoonotics and Wildlife Disease: Publications
We review two groups of taxonomically unrelated viruses that share similarities in host preference and transmission routes to humans and pose a risk for mammalogists working with rodents. The rodent-borne hemorrhagic fever viruses in the Arenaviridae and Bunyaviridae are widely distributed on most continents where rodents occur. Their geographic distribution usually exceeds the distribution of the recognized human diseases they cause and has resulted from either natural coevolutionary events or the dissemination of viral passengers traveling with introduced mammalian hosts. Diseases of humans caused by these agents are among the most severe and most frequently fatal of zoonotic diseases. These …
The Role Of Aidose Reductase In Diabetic Retinopathy: Prevention And Intervention Studies, W. Gerald Robinson Jr., Nora M. Laver, Marjorie F. Lou
The Role Of Aidose Reductase In Diabetic Retinopathy: Prevention And Intervention Studies, W. Gerald Robinson Jr., Nora M. Laver, Marjorie F. Lou
School of Veterinary and Biomedical Sciences: Faculty Publications
Diabetic retinopathy is the major ocular complication of diabetes, both in terms of incidence and irreversible visual impairment. In spite of modern procedures for strict blood glucose control (DCCT, 1993), laser treatment (ETDRS, 1991f; Aiello, 1994), vitrectomy (Gardner and Blankenship, 1994; Glaser, 1994b), and classical pituitary ablation (Kohner et al., 1976; Speakman et al., 1966; Poulsen, 1953), it is a serious threat to normal vision. It is mainly a vascular disorder, primarily involving microvessels (Garner, 1970). Retinal capillaries undergo multiple, extremely complex structural alterations in response to the unavoidable hyperglycemia of long-term diabetes. Because many of the angiopathies occur on …
Certain Canine Weakly Β-Hemolytic Intestinal Spirochetes Are Phenotypically And Genotypically Related To Spirochetes Associated With Human And Porcine Intestinal Spirochetosis, Gerald E. Duhamel, Nagaraja Muniappa, Michelle R. Mathiesen, J. L. Johnson, J. Toth, R. O. Elder, A. R. Doster
Certain Canine Weakly Β-Hemolytic Intestinal Spirochetes Are Phenotypically And Genotypically Related To Spirochetes Associated With Human And Porcine Intestinal Spirochetosis, Gerald E. Duhamel, Nagaraja Muniappa, Michelle R. Mathiesen, J. L. Johnson, J. Toth, R. O. Elder, A. R. Doster
School of Veterinary and Biomedical Sciences: Faculty Publications
Four canine weakly β-hemolytic intestinal spirochetes associated with intestinal spirochetosis (IS-associated WBHIS) were compared with IS-associated human and porcine WBHIS and the type species for Serpulina hyodysenteriae and S. innocens by using phenotypic and genotypic parameters. The IS-associated canine, human, and porcine WBHIS belonged to a phyletic group distinct from but related to previously described Serpulina type species.
An Abattoir Study Of Tuberculosis In A Herd Of Farmed Elk, Terry L. Whiting, Stacy V. Tessaro
An Abattoir Study Of Tuberculosis In A Herd Of Farmed Elk, Terry L. Whiting, Stacy V. Tessaro
Michigan Bovine Tuberculosis Bibliography and Database
The purpose of this study was to examine the prevalence and distribution of grossly visible lesions of tuberculosis in a herd of 344 North American elk (Cervus elaphus) depopulated during a three-month period in 1991. Abattoir inspection detected mycobacterial lesions in 134 (39.8%) of the 337 animals received for slaughter. The prevalence of lesions increased with the age of the animals. Lesions were predominantly suppurative rather than caseous, and mineralization was less evident than in tuberculous lesions in cattle. Lesions occurred predominantly -in lymph nodes, and lungs were the only organs in which mycobacterial lesions were found. The …
An Ethicist's Commentary On Whether Veterinarians Should Report Cruelty, Bernard E. Rollin
An Ethicist's Commentary On Whether Veterinarians Should Report Cruelty, Bernard E. Rollin
Animal Welfare Collection
No abstract provided.
Identification And Characterization Of A Human Herpesvirus 6 Gene Segment Capable Of Transactivating The Human Immunodeficiency Virus Type 1 Long Terminal Repeat In An Spl Binding Site-Dependent Manner, Jinhai Wang, Clinton J. Jones, Michael Norcross, Ernst Bohnlein, Abdur Razzaque
Identification And Characterization Of A Human Herpesvirus 6 Gene Segment Capable Of Transactivating The Human Immunodeficiency Virus Type 1 Long Terminal Repeat In An Spl Binding Site-Dependent Manner, Jinhai Wang, Clinton J. Jones, Michael Norcross, Ernst Bohnlein, Abdur Razzaque
School of Veterinary and Biomedical Sciences: Faculty Publications
The human immunodeficiency virus type 1 (HIV-1) long terminal repeat (LTR) is transactivated by various extracellular signals and viral cofactors that include human herpesviruses. These transactivators are capable of transactivating the HIV-1 LTR through the transactivation response element, NF-KB, or other regulatory binding elements. Human herpesvirus 6 (HHV-6) is a potential cofactor of HIV-1. Here, we report that an HHV-6 gene segment, ZVH14, which can neoplastically transform NIH 3T3 and human keratinocytes, is capable of transactivating HIV-1 LTR chloramphenicol acetyltransferase constructs in an Spl binding site-dependent manner. Transactivation increased synergistically in the presence of multiple Spl sites and was dramatically …
Status Of Bovine Tuberculosis In North America, M.A. Essey, M.A. Koller
Status Of Bovine Tuberculosis In North America, M.A. Essey, M.A. Koller
Michigan Bovine Tuberculosis Bibliography and Database
The eradication of bovine tuberculosis from North America is in the advanced stages as Canada and the United States struggle to remove the last vestiges of the disease from the domestic livestock population. Canada realistically anticipates total eradication from the national cattle herd within the next few years. The United States must yet effectively deal with the increased tuberculosis exposure potential from imported steers and from bovine tuberculosis newly discovered in its captive cervid industry. This paper reviews the history and development of tuberculosis eradication programs in North America. The basic evolution is described from area testing to slaughter surveillance …
The Role Of A Wildlife Reservoir In The Epidemiology Of Bovine Tuberculosis, D. U. Pfeiffer
The Role Of A Wildlife Reservoir In The Epidemiology Of Bovine Tuberculosis, D. U. Pfeiffer
Michigan Bovine Tuberculosis Bibliography and Database
The objective of this project was to study the epidemiology of bovine tuberculosis in the presence of a wildlife reservoir species. Cross-sectional and longitudinal studies of possum populations with endemic bovine tuberculosis infection were analyzed. The results were used to develop a computer simulation model of the dynamics of bovine tuberculosis infection in possum populations. A case-control study of breakdowns to tuberculosis infection in cattle herds in the Central North Island of New Zealand was conducted to identify risk factors other than exposure to tuberculosis in local possum populations.
1994 Beef Cattle Report, Darrell W. Nelson
1994 Beef Cattle Report, Darrell W. Nelson
Nebraska Beef Cattle Reports
Two grazing trials were conducted to determine i/protein or energy was first limiting in the spring-and fall-born nursing calf grazing native sandhills range. Spring-born calves supplemented with escape protein gained more rapidly than calves supplemented with energy or nonsupplemented controls. Fall-born calves supplemented with escape protein gained more rapidly than those supplemented with rumen degradable protein or energy and nonsupplemented controls early in the trial, but gained at a similar rate to the energy controls by the end of the trial. Milk intake was similar across treatments for both trials. Escape protein is more limiting in the young nursing calf …
Major Histocompatibility Complex-Restricted Cd8+ Cytotoxic T Lymphocytes From Horses With Equine Infectious Anemia Virus Recognize Env And Gag/Pr Proteins, Travis C. Mcguire, Daniel B. Tumas, Katherine M. Byrne, Melissa T. Hines, Steven R. Leib, Alberta L. Brassfield, Katherine I. O'Rourke, Lance E. Perryman
Major Histocompatibility Complex-Restricted Cd8+ Cytotoxic T Lymphocytes From Horses With Equine Infectious Anemia Virus Recognize Env And Gag/Pr Proteins, Travis C. Mcguire, Daniel B. Tumas, Katherine M. Byrne, Melissa T. Hines, Steven R. Leib, Alberta L. Brassfield, Katherine I. O'Rourke, Lance E. Perryman
Zoonotics and Wildlife Disease: Publications
Cytotoxic T lymphocytes (CTL) can control some viral infections and may be important in the control of lentiviruses, including human immunodeficiency virus type 1. Since there is limited evidence for an in vivo role of CTL in control of lentiviruses, dissection of immune mechanisms in animal lentiviral infections may provide needed information. Horses infected with equine infectious anemia virus (EIAV), a lentivirus, have acute plasma viremia which is terminated in immunocompetent horses. Viremic episodes may recur, but most horses ultimately control infection and become asymptomatic carriers. To begin dissection of the immune mechanisms involved in EIAV control, peripheral blood mononuclear …
Serologic And Genetic Identification Of Peromyscus Maniculatus As The Primary Rodent Reservoir For A New Hantavirus In The Southwestern United States, James E. Childs, Thomas G. Ksiazek, Christina F. Spiropoulou, John W. Krebs, Sergey Morzunov, Gary O. Maupin, Kenneth L. Gage, Pierre E. Rollin, John Sarisky, Russell E. Enscore, Jennifer K. Frey, C. J. Peters, Stuart T. Nichol
Serologic And Genetic Identification Of Peromyscus Maniculatus As The Primary Rodent Reservoir For A New Hantavirus In The Southwestern United States, James E. Childs, Thomas G. Ksiazek, Christina F. Spiropoulou, John W. Krebs, Sergey Morzunov, Gary O. Maupin, Kenneth L. Gage, Pierre E. Rollin, John Sarisky, Russell E. Enscore, Jennifer K. Frey, C. J. Peters, Stuart T. Nichol
Zoonotics and Wildlife Disease: Publications
An outbreak of hantavirus pulmonary syndrome(H PS) in the southwestern United States was etiologically linked to a newly recognized hantavirus. Knowledge that hantaviruses are maintained in rodent reservoirs stimulated a field and laboratory investigation of 1696 small mammals of 31 species. The most commonly captured rodent, the deer mouse( Peromyscus maniculatus), had the highest antibody prevalence(3 %)to four hantavirus antigens. Antibody also was detected in 10 other species of rodent and in 1 species of rabbit. Reverse transcriptase-polymerase chain reaction( RT-PCR)products of hantavirus from rodent tissues were indistinguishable from those from human H PS patients. More than 96% of …