Endocrinology Commons™
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Recent Articles in Endocrinology
Kisspeptin Receptor Agonist (Ftm080) Increased Plasma Concentrations Of Luteinizing Hormone In Anestrous Ewes, Brian K. Whitlock, Kelly A. Chameroy, Rebecca R. Payton, Shinya Oishi, Nobutaka Fujii, Joseph A. Daniel 
University of Tennessee, Knoxville
Kisspeptin Receptor Agonist (Ftm080) Increased Plasma Concentrations Of Luteinizing Hormone In Anestrous Ewes, Brian K. Whitlock, Kelly A. Chameroy, Rebecca R. Payton, Shinya Oishi, Nobutaka Fujii, Joseph A. Daniel
Brian K Whitlock, PhD, DVM, DACT
Kisspeptin (KP) and the KP receptor (Kiss1r) are integral to central regulation of the gonadotropic-axis. The demonstration that intravenous infusion of KP can stimulate gonadotropin secretion and ovulation in seasonally anestrous female sheep offers a means of manipulating the reproductive axis. However, KP may be of limited clinical use because of the short circulating half-life. Kiss1r agonists with increased half-life and similar efficacy to KP in vitro potentially may provide beneficial applications in breeding management of many species. However, many of these agonists have not been tested in vivo. This study was designed to test and compare the effects of ...
Meloxicam Mediates Short-Term Behavioral Changes Of Castrated Calves, Peter D. Krawczel, Jeff A. Carroll, Nicole C. Burdick Sanchez, Jeff W. Dailey, Joseph A. Daniel, Johann F. Coetzee, Brian K. Whitlock University of Tennessee, Knoxville
Meloxicam Mediates Short-Term Behavioral Changes Of Castrated Calves, Peter D. Krawczel, Jeff A. Carroll, Nicole C. Burdick Sanchez, Jeff W. Dailey, Joseph A. Daniel, Johann F. Coetzee, Brian K. Whitlock
Brian K Whitlock, PhD, DVM, DACT
Castration may detrimentally affect the health and performance of weaned calves and painful procedures are increasingly a public concern. Therefore, practical pain mitigation is critical. The objective was to determine the effects of castration (by banding) with or without administration of NSAID, meloxicam, on the behavior of weaned beef calves. Forty-eight (56 d post-weaning) beef calves [10.0 ± 0.2 (mean ± SE) mo old; 304 ± 6 kg BW] were blocked by multiple factors then randomly assigned to 3 treatments (n = 16 calves per treatment: 1) intact bulls (BULL), 2) castration by banding (BAN), or 3) castration by banding with orally-administered ...
Effect Of Meloxicam On Gain And Behavior Of Calves Castrated By Banding Pre-Weaning, Joseph A. Daniel, Peter D. Krawczel, Brian K. Whitlock University of Tennessee, Knoxville
Effect Of Meloxicam On Gain And Behavior Of Calves Castrated By Banding Pre-Weaning, Joseph A. Daniel, Peter D. Krawczel, Brian K. Whitlock
Brian K Whitlock, PhD, DVM, DACT
The objective was to determine if oral meloxicam (M; a non-steroid anti-inflammatory) administered at castration of pre-weaning calves affected ADG or behavior. Prior to castration (14 d), Angus bulls were assigned to bull (BULL; n = 7; age 106 ± 6 d; BW = 174.2 ±7.7 kg; scrotal circumference 17.7 ± 0.4 cm), castrated (BAN; n = 12; age = 105 ± 5 d; BW = 144.5 ± 7.6 kg; scrotal circumference = 16 ± 0.4 cm) or castrated with meloxicam (BAN+M; n = 13; age = 121 ± 6 d; BW = 145.8 ± 6 kg; scrotal circumference = 16.1 ± .3 cm) treatments with consideration of ...
Effect Of Meloxicam On Gain And Inflammatory Response Of Calves Castrated By Banding Post-Weaning, Brian K. Whitlock, Peter D. Krawczel, Jeff A. Carroll, Nicole C. Burdick Sanchez, Jeff W. Dailey, Joseph A. Daniel, Johann F. Coetzee University of Tennessee, Knoxville
Effect Of Meloxicam On Gain And Inflammatory Response Of Calves Castrated By Banding Post-Weaning, Brian K. Whitlock, Peter D. Krawczel, Jeff A. Carroll, Nicole C. Burdick Sanchez, Jeff W. Dailey, Joseph A. Daniel, Johann F. Coetzee
Brian K Whitlock, PhD, DVM, DACT
Castration may detrimentally affect the health and performance of weaned calves, and painful procedures are increasingly becoming a public concern. The objective of this study was to determine the effects of castration (by banding) with or without administration of meloxicam, a non-steroid anti-inflammatory, on performance and inflammatory response in weaned beef calves. Forty-eight (weaned) beef calves [10.0±0.2 mo old; 304±6 kg BW] were blocked by age, BW, wither height, scrotal circumference, and source, then randomly assigned to 1 of 3 treatments (n=16 calves per treatment: 1) intact bulls (BULL), 2) castration by banding (BAN), or ...
Hormonal And Morphological Aspects Of Growth And Sexual Maturation In Wild-Caught Male Vervet Monkeys (Chlorocebus Aethiops Pygerythrus), Tegan J. Gaetano 
University of Wisconsin Milwaukee
Hormonal And Morphological Aspects Of Growth And Sexual Maturation In Wild-Caught Male Vervet Monkeys (Chlorocebus Aethiops Pygerythrus), Tegan J. Gaetano
Theses and Dissertations
Knowledge of baseline changes in testosterone (T) and other androgens is central to both investigations of morphological, physiological, and behavioral correlates of inter-individual variation in the timing and shape of key events and transitions over the life course and questions of the evolution of species-specific schedules of maturation in primates. T represents an important determinant of spermatogenesis in male mammals and plays a central role in the expression of male sexual behavior and the development of secondary sex characteristics. This research integrates hormonal and morphometric methods to determine age-related changes in fecal testosterone (fT) metabolites and morphological markers of sexual ...
Steroid Transfer Between Conspecifics And Its Potential Impacts On The Reproductive Endocrinology Of Female Mice, Adam C. Guzzo 
McMaster University
Steroid Transfer Between Conspecifics And Its Potential Impacts On The Reproductive Endocrinology Of Female Mice, Adam C. Guzzo
Open Access Dissertations and Theses
Sex steroids are critical for the post-natal development of the female reproductive system, and are involved in ovulatory cycling and pregnancy. In mice, Mus musculus, female development, cycling, and pregnancy can be affected by the urine of conspecifics, which is known to contain active steroids. Specifically, puberty can be accelerated (the Vandenbergh effect), estrous cycling can be prolonged (the Lee-Boot effect) or synchronized (the Whitten effect), and blastocyst implantation can be disrupted (the Bruce effect). Since steroids alone can affect females in ways that are indistinguishable from these social reproductive effects, I hypothesized that urinary steroids of conspecifics may be ...
House Finches, Carpodacus Mexicanus: Hormones, Stress, And Song Control Regions, Katherine Olivia Ganster 
California Polytechnic State University
House Finches, Carpodacus Mexicanus: Hormones, Stress, And Song Control Regions, Katherine Olivia Ganster
Master's Theses and Project Reports
Song production in songbirds is controlled by parts of the brain known as the song control regions (SCRs). During spring, gonads increase in size, males sing to attract mates, and SCRs become larger. This neuroplasticity is controlled by the change in day length and increased plasma testosterone (T) levels. Plasma T can be reduced by stress through the production of corticosterone (CORT), through the production of beta-endorphin, or through direct effects on the testes via the nervous system. We determined the T, estradiol, and CORT hormonal profiles of wild House Finches by capturing and sampling blood from the finches every ...
Understanding Physiological Responses And Development Of Stress Biomarker From Tilapia Treated With Vitamin C During Chronic Stress Induced By Crowding, Md Sharif Abu-Hayat 
Indiana University – Purdue University Fort Wayne
Understanding Physiological Responses And Development Of Stress Biomarker From Tilapia Treated With Vitamin C During Chronic Stress Induced By Crowding, Md Sharif Abu-Hayat
Master's Theses
Experiments were conducted to investigate: i) the effects of vitamin C as a nutraceutical in modulating stress and ii) usability of expression of the genes adrenocorticotropic hormone (ACTH) receptor and corticotropin releasing hormone (CRH) as stress biomarkers. Tilapia (Oreochromis niloticus) fingerlings were obtained from a local fish farm and were acclimated in the new environment for four weeks. After the acclimation period, fish were maintained in two different conditions - controlled and stressed (by crowding; density > 50 g/l). Within each condition, fish were further divided into two diet groups, each with two replicates, and were fed vitamin C supplemented (@1000 ...
Novel-Male Induced Pregnancy Failure In Mice: Effects On Implantation, Luminal Area And E-Cadherin, Nazanin Rajabi McMaster University
Novel-Male Induced Pregnancy Failure In Mice: Effects On Implantation, Luminal Area And E-Cadherin, Nazanin Rajabi
Open Access Dissertations and Theses
Adhesion of the blastocyst to the uterine wall is a highly sensitive phenomenon referred to as implantation. Novel-males are capable of disrupting the success of this process (the Bruce effect). A leading hypothesis invokes the transfer of estradiol from the male to the female via urine. This estradiol has direct effect on the uterus which may include morphology and molecular dynamics. Estradiol has been related to closure of the uterus around the blastocyst during implantation, which may assist in bringing the blastocyst close to the uterine wall for strong adhesion. E-cadherin, a cellular adhesion molecule, is found on both blastocyst ...
Popular Institutions
Popular Authors
Brian Whitlock
University of Tennessee, Knoxville
Tegan Gaetano
University of Wisconsin Milwaukee
Shelly Gupta
California Polytechnic State University
Brandy Kalbach
California Polytechnic State University
Adam Guzzo
McMaster University
Katherine Ganster
California Polytechnic State University
Leslie Wade
University of South Florida
Arshad Khan*
University of Texas at El Paso
Vielka Salazar
Florida International University
Nishan Sudheera Kalupahana
University of Tennessee, Knoxville
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Popular Articles
The Relationship Between 11-Ketotestosterone, Cortisol, And Testosterone And Condition Index For Poecilia Reticulata, Brandy Kalbach, Shelly Gupta
Assessment Of Fertility Potential In Bottlenose Dolphins (Tursiops Truncatus): An Elisa-Based Biomarker Analysis, Leslie Wade
House Finches, Carpodacus Mexicanus: Hormones, Stress, And Song Control Regions, Katherine Ganster
Farm Focus - Spring 2009, Brian Whitlock
Farm Focus - Fall 2009, Brian Whitlock
Effect Of Meloxicam On Gain And Inflammatory Response Of Calves Castrated By Banding Post-Weaning, Brian Whitlock
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