Digital Commons Network^™

Usp16 And Histone H2a Deubiquitination In Mouse Embryonic Stem Cell Function, Wei Yang

All ETDs from UAB

In eukaryotic cells, genomic DNA is packaged into a chromatin structure by association with histone and non-histone proteins. Posttranslational modifications of histones play important roles in the regulation of chromatin structure and function. Ubiquitination of histone H2A (ubH2A) represents a predominate modification, occurring on ~10% of total cellular H2A. While H2A ubiquitination is primarily conferred by Polycomb Repressive Complex 1 (PRC1), H2A deubiquitination has been attributed to multiple H2A deubiquitinases. Our laboratory previously reported the purification and functional characterization of a H2A-specific deubiquitinase, USP16 (initially named as Ubp-M) in human cells. However, whether USP16 represents a general and important regulator …

Evaluation Of Multiple Choice And Short Essay Question Items In Basic Medical Sciences, Mukhtiar Baig, Syeda Kauser Ali, Sobia Ali, Nighat Huda

Department of Continuing Professional Education

OBJECTIVES:

To evaluate Multiple Choice and Short Essay Question items in Basic Medical Sciences by determining item writing flaws (IWFs) of MCQs along with cognitive level of each item in both methods.

METHODS:

This analytical study evaluated the quality of the assessment tools used for the first batch in a newly established medical college in Karachi, Pakistan. First and sixth module assessment tools in Biochemistry during 2009-2010 were analyzed. Cognitive level of MCQs and SEQs, were noted and MCQ item writing flaws were also evaluated.

RESULTS:

A total of 36 SEQs and 150 MCQs of four items were analyzed. The …

Attachment Style And Perceived Social Support As Predictors Of Biopsychosocial Adjustment To Cancer, Ayşe Gül Yilmaz Özpolat, Tuğba Ayaz, Özlem Konağ, Asi̇ye Özkan

Turkish Journal of Medical Sciences

Social support is associated with a decrease in psychological symptoms and a better quality of life in cancer patients. The aim of this study was to investigate the role of attachment dimensions on social and psychological adjustment to cancer and to explore the social and psychological adjustments, and medical adherence, among patients. Materials and methods: The study was conducted with 68 cancer patients, between 18 and 74 years of age. The measures taken were the Demographic Information Form, Multidimensional Scale of Perceived Social Support (MSPSS), Experiences in Close Relationships-Revised (ECR-R), and Psychosocial Adjustment to Illness Scale (PAIS-SR). Results: The results …

Induction Of A Type I Interferon Signature In Normal Human Monocytes By Gadolinium-Based Contrast Agents: Comparison Of Linear And Macrocyclic Agents., Peter J. Wermuth, Sergio A. Jimenez

Jefferson Institute of Molecular Medicine Papers and Presentations

The gadolinium-based contrast agent (GdBCA) Omniscan activates human macrophages through Toll-like receptor (TLR)-4 and TLR-7 signalling. To explore the mechanisms responsible we compared the ability of linear and macrocyclic GdBCA to induce a type I interferon signature and a proinflammatory/profibrotic phenotype in normal human monocytes in vitro. Expression of genes associated with type I interferon signalling and inflammation and production of their corresponding proteins were determined. Both linear and macrocyclic GdBCA stimulated expression of multiple type I interferon-regulated genes and the expression of numerous chemokines, cytokines and growth factors in normal human peripheral blood monocytes. There was no correlation between …

Electronic Prescribing And Its Implementation In The United States, Kate Englebert, Amber Porterfield, William K. Willis, Alberto Coustasse

Management Faculty Research

Introduction: Electronic prescribing (e-prescribing) is an important part of the nation’s push to create an electronically accessible national health system. E-prescribing allows providers to send prescriptions electronically to the pharmacy and can be stand-alone systems or part of an integrated electronic health record system.

Methodology: The methodology for this study was a literature review. Electronic databases accessed include EBSCOhost, PubMED, and Google Scholar. Additionally, government websites and a semi-structured interview were used. A total of 39 sources were referenced for the review.

Results: The results of the literature review demonstrated that e-prescribing reduces prescribing errors, increases efficiency, and helps save …

Comparison Of Hippocampal Interleukin-6 Immunoreactivity After Exhaustive Exercise In Both Exercise-Trained And Untrained Rats, Lati̇fe Arzu Aral, Lamia Pinar, Güleser Göktaş, Elçi̇n Yaşar Deveden, Deni̇z Erdoğan

Turkish Journal of Medical Sciences

Exhaustive exercise is a strong stress factor and can impact cytokine production in the brain. Interleukin-6 (IL-6) is produced in greater amounts than any other cytokine in response to exercise, and its effects are closely related to both exercise duration and intensity. In this study, we measured the differences between the amount of IL-6 reactivity of the hippocampus after an exhaustive session of running in long-term exercise-trained and untrained rats. Materials and methods: The exercise-trained group ran on a treadmill for 12 weeks. Both groups were forced to run until exhaustion. Each group of rats was sacrificed immediately, 1 day, …

Age-Related Changes In Biomechanical Parameters Of The Cornea And Intraocular Pressure In A Healthy Turkish Population, Emi̇ne Şen, Kadri̇ye Ufuk Elgi̇n, Pinar Yüksekkaya, Mehmet Hakan Tirhiş, Fatma Nur Baran Aksakal, Mehmet Yasi̇n Teke, Faruk Öztürk

Turkish Journal of Medical Sciences

To investigate age-related changes in intraocular pressure (IOP) and biomechanical parameters of the cornea in healthy subjects. Materials and methods: There were 404 healthy subjects included prospectively in this study. The subjects were divided into 3 groups (Group 1: 93 subjects aged 60). Corneal compensated IOP (IOPcc), Goldmann correlated IOP (IOPg), corneal hysteresis (CH), and corneal resistance factor (CRF) were measured by the Ocular Response Analyzer. Results: When all the study groups were evaluated, a moderately significant negative correlation was found between age and CH and between age and CRF (Spearman's rho = -0.372 and -0.353, respectively; P < 0.0001 for both correlations). There were significant age-related differences among the 3 groups in terms of IOPg, CH, CRF, and central corneal thickness (P = 0.002, P = 0.000, P = 0.000, P = 0.006). There was no confirmation of any difference of IOPcc among the groups (P = 0.427). Conclusion: The mean values of IOPg, CH, and CRF were lower than the other parameters in Group 3 but no significant differences were determined in IOPcc values in the age groups.

Epidemiology Of Uveitis In A Referral Hospital In Turkey, Müge Pinar Çakar Özdal, Alper Yazici, Melek Tüfek, Faruk Öztürk

Turkish Journal of Medical Sciences

To investigate the causes and clinical characteristics of uveitis in patients presenting to a specialized eye hospital in Turkey. Materials and methods: The clinical records of 1028 uveitis patients admitted between 1990 and 2010 were retrospectively reviewed. Age at first presentation, sex, laterality, etiology, associated systemic disease, clinical presentation, and course of the disease were noted. Results: The mean age at presentation was 36.23 ± 14.9 years. Males constituted 58.2% of patients. Anatomically, anterior uveitis (42%) was most common, followed by posterior uveitis (24.9%), panuveitis (24.7%), and intermediate uveitis (8.4%). The course of the disease was mostly chronic (65.7%). The …

The Role Of Microrna In Staphylococcal Enterotoxin B-Induced Inflammation And Acute Lung Injury, Roshni Rao

Theses and Dissertations

Staphylococcal enterotoxin B (SEB) is a potent activator of the Vβ8+T-cells leading to the proliferation of nearly 30% of the T-cell pool. As a consequence, excessive amounts of cytokine mediators are released leading to extensive tissue damage and sometimes toxic shock and death. Due to the ease with which SEB can be aerosolized anddisseminated, it is considered a biological weapon. In the current study, we investigated the pro-inflammatory effects of SEB in two mouse models of acute inflammatory lung injury. Specifically, while inflammatory cues are known to elicit changes in key transcriptional factors and gene expression, we explored for the …

An Anatomical Study On The Facial Nerve Trunk In Fetus Cadavers, Ahmet Kalaycioğlu, Gülay Yegi̇noğlu, Canan Ertemoğlu Öksüz, Özlem Uzun, Şahi̇ Nur Kalkişim

Turkish Journal of Medical Sciences

Facial nerve paralysis is the most worrying parotid surgery complication. Little attention has been paid to the facial nerve trunk, especially in children. Pathological variations, tumors, and anatomic variations of the facial nerve may cause parotid and facial nerve surgery difficulties. This study describes the facial nerve trunk. Materials and methods: We measured the facial nerve trunk from 8 female and 8 male fetus cadavers aged 21.0 to 35.5 gestational weeks. The locations and positions of the trunks were described. The length of the facial nerve trunk (K) was measured and bifurcation and trifurcation of the trunk was examined. Values …

Possible Metabolic Impact Of Ramadan Fasting In Healthy Men, Mustafa Cumhur Vardarli, Hans-Peter Hammes, İrfan Vardarli

Turkish Journal of Medical Sciences

Insulin sensitivity and \beta-cell function during Ramadan fasting in healthy male subjects have not been investigated so far. We assessed the changes of these and other metabolic parameters to judge the potential metabolic benefits of Ramadan fasting. Materials and methods: Twenty-four healthy males of Turkish origin living in Germany, with normal glucose tolerance, participated in this study during Ramadan of 2009; 19 who completed fasting were analyzed. Blood was drawn at sunset after a period of fasting lasting approximately 15 h on days 0, 16, and 30 of Ramadan, as well as 7 and 28 days later. Insulin sensitivity (Homeostasis …

Comparison Of Estrogen And Betamethasone In The Topical Treatment Of Labial Adhesions In Prepubertal Girls, Nazi̇le Ertürk

Turkish Journal of Medical Sciences

To compare estrogen and betamethasone in the topical treatment of labial adhesions in prepubertal girls. Materials and methods: In this retrospective study, we evaluated 39 girls with labial adhesions covering at least 50% of the vaginal opening. Of the total patients, 20 were treated with a topical estrogen preparation, while the remaining 19 patients were treated with a combination of betamethasone cream and petroleum ointment (Vaseline) for 3 to 9 weeks. Results: Sixteen of 20 (80%) patients in the estrogen treatment group were treated successfully with topical estrogen cream only, and 17 of 19 (89.4%) patients in the second group …

Evaluation Of Scleral-Fixated Intraocular Lens Position Anomalies By Anterior Segment Optical Coherence Tomography, Ni̇hat Polat, Kemaletti̇n Kazim Devranoğlu, Mehmet Aki̇f Özdamar, Ceyhun Arici

Turkish Journal of Medical Sciences

To measure the positions of scleral-fixated intraocular lenses (IOLs) using anterior segment optical coherence tomography (OCT) and to evaluate the influence of the position of scleral-fixated IOL on the quality of vision. Materials and methods: Twenty-six eyes of 26 patients were included in the study. The average age was 57.5 (11 to 78) years. Anterior segment images were taken using slit lamp optical coherence tomography (SL-OCT) and were used to evaluate the position of the IOL. Results: The average amounts of tilt and decentration were 2.25° ± 1.93° and 359.28 ± 194.70 µm, respectively. There was a positive and moderate …

The Diagnostic Efficiency Of Ct And Mri In Ileosigmoid Knotting, Sabri̇ Selçuk Atamanalp, Abdulmeci̇t Kantarci, Bülent Aydinli, Gürkan Öztürk, Şükrü Arslan, Ercan Korkut, Metehan Gümüş, Abdullah Böyük

Turkish Journal of Medical Sciences

No abstract provided.

Higher Breakfast Glycaemic Load Is Associated With Increased Metabolic Syndrome Risk, Including Lower Hdl-Cholesterol Concentrations And Increased Tag Concentrations, In Adolescent Girls, Analise Nicholl, Mary Du Heaume, Trevor A. Mori, Lawrence J. Beilin, Wendy H. Oddy, Alexandra P. Bremner, Therese A. O'Sullivan

Research outputs 2014 to 2021

Almost all previous studies examining the associations between glycaemic load (GL) and metabolic syndrome risk have used a daily GL value. The daily value does not distinguish between peaks of GL intake over the day, which may be more closely associated with the risk of the metabolic syndrome. The aim of the present study was to investigate the cross-sectional associations between daily and mealtime measures of GL and metabolic syndrome risk, including metabolic syndrome components, in adolescents. Adolescents participating in the 14-year follow-up of the Western Australian Pregnancy Cohort (Raine) Study completed 3 d food records and metabolic assessments. Breakfast …

An Evolutionary Perspective On Infectious And Chronic Disease, John Eberth

Theses and Dissertations

The integration of evolutionary biology with traditional medicine can elucidate novel mechanisms of contemporary disease. Whereas the goal of traditional medicine is to treat and cure the proximate causes, evolutionary biology aims to understand the driving forces behind why humans are susceptible to disease. To form the basis of this hypothesis we postulate that modern man's current genetic information was programmed at a time, and in an environment, that is not relevant to today's human populations. The discordance between these genes of our ancestors and the environment of contemporary humans is thought to be a major reason for the increase …

The Effect Of Gaba A Antagonism On Locomotor Activity And Dopamine Release In The Mouse Caudate Putamen Following Acute Toluene Inhalation: An In-Vivo Microdialysis Study, Sean Callan

Wayne State University Theses

Toluene is ubiquitous solvent commonly inhaled recreationally. Despite its frequency of misuse, there is little understanding of how toluene acts within the brain. To examine this, this master's thesis examined the impact of acutely inhaled toluene on dopamine (DA) release in the mouse CPu in vivo using microdialysis techniques. Toluene inhalation produced dose-dependent increases in DA levels as well as changes in locomotor activity. These effects were potentiated by pre-treatment with the GABAA antagonist bicuculline via reverse microdialysis delivery. These results suggest that the DA dynamics of toluene abuse are related to toluene's previously explored effects on the GABA system. …

Inattention And Hyperactivity Among Preschool Age Children Born Prematurely, Andrew Heitzer

Wayne State University Theses

A large body of literature shows that compared to children born at term, preterm- children are at increased risk for difficulties with inattention and hyperactivity. Less consistency exists, however, in the limited body of research exploring the contribution of early biological risk to behavioral disinhibition within the population of children born prematurely. Therefore, our goal was to examine perinatal variables that may influence activity level and hyperactivity among preterm preschoolers. Ninety-eight preterm (23.4 - 33.9 weeks gestation) preschoolers (3-4 years) participated in the study. Direct measures of inattention and hyperactivity as well as parental ratings were used to evaluate behavior. …

Effects Of Hyperbaric Oxygen On Eye Tracking Abnormalities In Males After Mild Traumatic Brain Injury, Joanna R. Wares, David X. Cifu, Kathy W. Hoke, Paul A. Wetzel, George Gitchel, William Carne

Department of Math & Statistics Faculty Publications

The effects of hyperbaric oxygen (HBO2) on eye movement abnormalities in 60 military servicemembers with at least one mild traumatic brain injury (mTBI) from combat were examined in a single-center, randomized, double-blind, sham-controlled, prospective study at the Naval Medicine Operational Training Center. During the 10 wk of the study, each subject was delivered a series of 40, once a day, hyperbaric chamber compressions at a pressure of 2.0 atmospheres absolute (ATA). At each session, subjects breathed one of three preassigned oxygen fractions (10.5%, 75%, or 100%) for 1 h, resulting in an oxygen exposure equivalent to breathing either surface air, …

Preparation, Characterization, And Delivery Of Antibodies Binding To A Model Oncogenic Rna, Human Initiator Trna, Jennifer Archer

Electronic Theses and Dissertations

Non-coding RNAs (ncRNAs) account for a higher percent of the genome than coding mRNAs, and are implicated in human disease such as cancer, neurological, cardiac and many others. While the majority of ncRNAs involved in disease were originally attributed to a class of RNAs called micro RNAs (miRNAs) with a small size of only about 19 -24 base pairs, emerging research has now demonstrated a class of long non-coding RNAs (lncRNAs) that have a size of over 200 base pairs to be responsible for gene regulation and other functional roles and have also found to contribute to pathogenesis in humans. …

Effects Of Ozone Therapy And Taurine On Ischemia/Reperfusion-Induced Testicular Injury In A Rat Testicular Torsion Model, Tolga Reşat Aydos, Mehmet Murad Başar, Oğuz Kul, Hasan Tarik Atmaca, Tuba Uzunali̇oğlu, Üçler Kisa, Oğuzhan Eki̇n Efe

Turkish Journal of Medical Sciences

To investigate the effect of ozone and/or taurine treatment comparatively on testicular damage due to ischemia/reperfusion (I/R) injury in an experimental torsion model in rats. Materials and methods: Adult Wistar rats with and without torsion/detorsion were used. In order to monitor the effect of ozone and/or taurine treatment on testicular damage due to I/R injury, following histopathological investigation apoptotic indexes were scored by TUNEL method. Moreover, tumor necrosis factor receptor 1 (TNFR1), caspase 3, caspase 8, endothelial nitric oxide synthase (eNOS), tumor necrosis factor alpha (TNF\alpha), and cytochrome C immunostainings were performed and the levels of malondialdehyde, glutathione peroxidase, superoxide …

The Correlation Of Echo Findings Of Right Cardiac Pathologies With Bnp, Uric Acid, And Crp In Osas, Ömer Araz, Eli̇f Yilmazel Uçar, Hüsnü Deği̇rmenci̇, Di̇dem Pulur, Hami̇t Acemoğlu, Ednan Bayram, Fuat Gündoğdu, Meti̇n Akgün

Turkish Journal of Medical Sciences

Right cardiac pathologies develop in patients with obstructive sleep apnea syndrome (OSAS) and in most patients there are no symptoms in the early stages of right cardiac disorders. We aimed to evaluate a possible relationship between B-type natriuretic peptide (BNP), blood uric acid, C-reactive protein (CRP), and the right cardiac pathologies in patients with OSAS, and the role of these parameters in the management of patients with OSAS. Materials and methods: A total of 98 subjects, 31 (31.6%) controls and 67 (68.4%) with OSAS, were included in the study. All the subjects underwent polysomnography, and standard and tissue Doppler echocardiography …

Surgery For Intractable Temporal Lobe Epilepsy: Experience Of A Single Institution, Gökhan Kurt, Mehmet Tönge, Emrah Çelti̇kçi̇, İrem Çapraz, Ayşe Serdaroğlu, Erhan Bi̇li̇r

Turkish Journal of Medical Sciences

In the treatment of epilepsy, encouraging results have been achieved with surgical treatment, especially for temporal lobe epilepsy (TLE). Drug resistance must be diagnosed as early as possible, because the ensuing seizures can be eliminated surgically via temporal lobe surgery in a high percentage (70%-90%) of patients. In this study we share our experience, in a single institution, of surgical treatment of intractable TLE. Materials and methods: Between March 2006 and November 2010 we performed 127 corticoamygdalohippocampectomy (CAH) procedures. All CAH surgical procedures were done as described by Niemeyer's technique. Resection lengths were 4-4.5 cm from the temporal pole. Results: …

Comparative Study Of Photodynamic Therapy Monotherapy Versus Triple Management In Age-Related Macular Degeneration, Ahmet Seli̇m, Ni̇lüfer Koçak, Hüseyi̇n Aslankara, Süleyman Kaynak

Turkish Journal of Medical Sciences

To compare the effectiveness of photodynamic therapy (PDT) and PDT combined with intravitreal triamcinolone (IVTA) and vascular endothelial growth factor inhibition (anti-VEGF) in age-related macular degeneration (AMD). Materials and methods: Eighty eyes of 80 patients diagnosed with choroidal neovascularization (CNV) caused by AMD were included in the study. PDT was carried out on 40 eyes in group I, and PDT combined with 4 mg IVTA and anti-VEGF (1.25 mg bevacizumab in 20 eyes, 0.3 mg pegaptanib sodium in 20 eyes) was carried out in group II. The primary efficacy endpoint was the mean change from baseline visual acuity at month …

Clinical And Prognostic Importance Of Chromosomal Abnormalities, Y Chromosome Microdeletions, And Cftr Gene Mutations In Individuals With Azoospermia Or Severe Oligospermia, Zeynep Ocak, Uğur Üyetürk, Muhammet Murat Di̇nçer

Turkish Journal of Medical Sciences

To illustrate the importance of genetic screening in the assessment of fertility and the correct diagnosis in patients with azoospermia or severe oligospermia. Materials and methods: This study examined 500 patients with reproductive failure, having fewer than 5 million sperm/mL detected in at least 2 consecutive spermiograms, who presented at a medical genetics polyclinic between 2008 and 2012. Metaphase preparations obtained from cell cultures were stained by trypsin-Giemsa banding. After DNA isolation, Y chromosome loci, including AZFa (SY84, SY86), AZFb (SY127, SY134), AZFc (SY254 SY255), and AZFd, were amplified by polymerase chain reaction using specific primers. Thirty-five patients with congenital …

Relation Of Age And Sex With Carotid Intima Media Thickness In Healthy Children, Ali̇ Koçyi̇ği̇t, Mustafa Doğan, İsmai̇l Yilmaz, Murat Çağlar, Celi̇le Hati̇poğlu, Fi̇gen Koçyi̇ği̇t, Duygu Herek, Nevzat Karabulut

Turkish Journal of Medical Sciences

To investigate the age- and sex-associated carotid intima media thickness (cIMT) changes in healthy children to determine the age- and sex-specific normal range of values for childhood. Materials and methods: This study examined 91 healthy school-age children aged 7-15 years prospectively. Standardized sonographic cIMT measurements and analyses were performed. Body mass index and blood pressure were obtained, and atherosclerotic risk factors were investigated. Age-and sex-specific cIMT measurements for different age groups were calculated and the relation with sex was investigated. Results: Regarding the total study group, mean cIMT measurements for age groups 7-9, 10-12, and 13-15 years were 4.1 ± …

Detection Of Kinase Amplifications In Gastric Adenocarcinomas, Muhsi̇n Özdemi̇r, Murat Öznur, Evri̇m Çi̇ftçi̇, Beyhan Durak Aras, Hüseyi̇n Aslan, Hande Saygili, Kevser Setenay Öner, Serdar Mustafa Erkasap, Ayşegül Özakyol, Özgül Paşaoğlu, Oğuz Çi̇li̇ngi̇r, Sevi̇lhan Artan

Turkish Journal of Medical Sciences

To determine the incidences of copy number aberrations of receptor kinases and their relations in Turkish patients with gastric adenocarcinoma. Materials and methods: The prevalence of genomic copy number aberrations of epidermal growth factor receptor (EGFR), human epidermal growth factor receptor 2 (HER2)/topoisomerase IIa (TOP2A), centrosome-associated kinase aurora A (AURK A), centrosome-associated kinase aurora B (AURK B), and mesenchymal-epithelial transition factor (MET) genes and polysomies of related chromosomes were analyzed by fluorescent in situ hybridization (FISH) in tumor samples from 35 patients with gastric cancer. Results: There were 28.6%, 65.7%, 20.0%, 17.1%, 60.0%, and 45.7% cases considered FISH-positive for EGFR, …

Immobilizing Mutation In An Unconventional Myosin15a Affects Not Only The Structure Of Mechanosensory Stereocilia In The Inner Ear Hair Cells But Also Their Ionic Conductances, Diana Syam

Theses and Dissertations--Medical Sciences

In the inner and outer hair cells (OHCs) of the inner ear, an unconventional myosin 15a localizes at the tips of mechanosensory stereocilia and plays an important role in forming and maintaining their normal structure. A missense mutation makes the motor domain of myosin 15a dysfunctional and is responsible for the congenital deafness DFNB3 in humans and deafness and vestibular defects in Shaker-2 (Sh2) mouse model. All hair cells of homozygous Shaker-2 mice (Myo15^sh2/sh2) have abnormally short stereocilia, but, only stereocilia of Myo15^sh2/sh2OHCs start to degenerate after the first few days of postnatal development …

Expression And Splicing Of Alzheimer’S Disease Risk Gene Phosphatidylinositol-Binding Clathrin Assembly Protein, Ishita Parikh

Theses and Dissertations--Physiology

Recent Genome Wide Association Studies (GWAS) have identified a series of single nucleotide polymorphism (SNP)s that are associated with Alzheimer’s disease (AD). One of the SNPs, rs3851179 (G/A), is near the gene phosphatidylinositol-binding clathrin assembly protein (PICALM). To evaluate whether this SNP is associated with PICALM expression, we quantified PICALM mRNA in 56 brain cDNA samples. Using linear regression analysis, we analyzed PICALM expression relative to rs3851179, AD status, and cell type specific markers. An association was detected between rs3851179 and PICALM, microvessel mRNA, glial fibrillary acidic protein (GFAP) mRNA, and synaptophysin (SYN) mRNA. To gain clarity …

Anti-Müllerian Hormone In Stallions And Mares: Physiological Variations, Clinical Applications, And Molecular Aspects, Anthony N.J. Claes

Theses and Dissertations--Veterinary Science

Anti-Müllerian hormone (AMH) is a homodimeric glycoprotein that is best known for its role in regression of the Müllerian duct in the male fetus. Accumulating evidence indicates that AMH also has an important role during different physiological processes after birth. In contrast to other species, relatively little is known about AMH in the horse. In chapter one, developmental and seasonal changes in serum AMH concentrations in male horses were determined, and the use of AMH for determination of retained cryptorchid testes was established. In chapter two, the interrelationship between plasma AMH concentrations, antral follicle counts (AFC), and age in mares …