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Sexual dimorphism in two pure cichlid species, Oreochromis niloticus niloticus (Linnaeus 1758) and Sarotherodon melanotheron melanotheron Rüppel 1852, and their intergeneric hybrids
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Toguyéni B Fauconneau C Mélard A Fostier J Lazard E Baras ER Kühn S van der Geyten J-F BaroillerGrowth performances and sexual growth dimorphism were compared in two pure species of tilapia, Oreochromis niloticus niloticus (OO) and Sarotherodon melanotheron melanotheron (SS), and their reciprocal intergeneric hybrids (male O. n. niloticus × female S. m. melanotheron [OS] and male... -
The impact of insulin resistance, gender, genes, glucocorticoids and ethnicity on body fat distribution
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: NJ Crowther --- Department of Chemical Pathology, National Health Laboratory Service, South Africa WF Ferris --- Department of Medicine, Faculty of Health Sciences, South AfricaThe metabolic consequences of obesity are highly dependent on body fat distribution and total body fat mass. Visceral adipose tissue in particular has been found to play an important aetiological role in obesity-related disorders. The contrasting fat distribution between genders,... -
Seasonal variation in gonadal steroids of males and females in the Cape mole-rat (Georychus capensis): the potential for opportunistic breeding
Item type: Journal Article • Journal: African Zoology • Authors: M. K. Oosthuizen --- Department of Zoology and Entomology, South Africa N. C. Bennett --- Department of Zoology and Entomology, South AfricaUrinary testosterone concentrations in males and urinary progesterone and oestradiol concentrations in females were measured in the Cape mole-rat (Georychus capensis) and compared for the summer and winter periods. The Cape mole-rat breeds seasonally, with sexual activity and subsequent pregnancy... -
The prevalence and association of low testosterone levels in a South African male, diabetic, urban population
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Tanja Kemp --- Department of Internal Medicine, South Africa Paul Rheeder --- Department of Internal Medicine, South AfricaBackground: According to the literature, low serum testosterone levels are associated with diabetes mellitus. No or minimal data exist for its prevalence or predictors in South Africa. -
Performance of the Androgen Deficiency in Aging Male questionnaire for the clinical detection of androgen deficiency in black sub-Saharan African men with Type-2 diabetes mellitus
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Theophilus E Ugwu --- Department of Medicine, Nigeria Rosemary T Ikem --- Department of Medicine, NigeriaBackground: The Androgen Deficiency in Aging Male (ADAM) questionnaire is increasingly popular for evaluation of androgen deficiency (AD) in sub-Saharan African men with type 2 diabetes mellitus (DM). However, its reliability in this population is unknown. -
Sexual cycle and seasonal expression of testosterone (T) in the testes of Sclerophrys mauritanica (Schlegel, 1841)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Omar Kisserli --- , , Algérie Elara Moudilou --- , France Jean-Marie Exbrayat --- , FranceSclerophrys mauritanica is an anuran amphibian found in the wetlands of Beni-belaid, Jijel, Algeria. The animals are constrained by wet (from September until May) and dry (from June until August) seasons, however, the sexual cycle of males is continuous (all... -
Hypogonadism and associated risk factors in male patients with type 2 diabetes mellitus attending the diabetic clinic of Tikur Anbessa Specialized Teaching Hospital, Addis Ababa, Ethiopia
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Sisay Teka --- College of Medicine and Health Sciences, Ethiopia Samuel Kinde --- College of Health Sciences, Addis Ababa University, Ethiopia Gobena Dedefo --- College of Health Sciences, Addis Ababa University, Ethiopia Kissi Mudi --- Ethiopian Public Health Institute, Ethiopia Getahun Tarekegn --- Tikur Anbesa Specialized Teaching Hospital, EthiopiaBackground: A high prevalence of hypogonadism among men with type 2 diabetes mellitus (T2DM) has been reported worldwide. This in turn creates a substantial public health burden in terms of inadequate sexual function and potential infertility. However, the status of... -
Acute changes in haematocrit leading to polycythaemia in late-onset hypogonadism patients that receive testosterone replacement therapy: a South African study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Jesslee du Plessis --- Medicine Usage in South Africa (MUSA), North-West University, South Africa Hermanus Lambertus Bester --- Private Hospital, Emalahleni, South Africa, Marlene Julyan --- Medicine Usage in South Africa (MUSA), North-West University, South Africa Marike Cockeran --- School for Computer, Statistical and Mathematical Sciences, North-West University, South AfricaBackground: According to the literature, parenteral testosterone replacement therapy (TRT)-induced polycythaemia is associated with cardiovascular events. No or minimal data exist for the prevalence of TRT-induced polycythaemia in late-onset hypogonadism (LOH) patients from South Africa. Polycythaemia is the side effect... -
Effects of atrazine on the endocrinology and histoarchitecture of the testes in African Catfish, Clarias gariepinus (Burchell, 1822)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PA Opute --- , Nigeria IP Oboh --- , Nigeria JE Asouzu --- , South Africa N Pilani --- , South Africa EF Mbajiorgu --- , South AfricaAquatic ecosystems often receive a wide spectrum of pollutants introduced directly or indirectly. The herbicide atrazine, an endocrine disrupting chemical (EDC), frequently contaminates potable water supplies and aquatic ecosystems. Studies suggest atrazine induced alterations in the neuroendocrine system along the... -
Total testosterone level may have no influence on the occurrence and severity of erectile dysfunction in males aged between 30 and 60 years living with type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Martine Claude Etoa Etoga --- , Yaoundé, Cameroon Doris Bibi Essama --- , Yaoundé, Cameroon Achille Aurèle Mbassi --- , Yaoundé, Cameroon Jan René Nkeck --- , Yaoundé, Cameroon Francine Mendane Mekobe --- , Yaoundé, Cameroon Mesmin Dehayem --- , Yaoundé, Cameroon Ama Moor Vicky --- , Yaoundé, Cameroon Eugène Sobngwi --- , Yaoundé, Cameroon Jean Claude Mbanya --- , Yaoundé, CameroonBackground: Erectile dysfunction is the most common sexual disorder in type 2 diabetes. Its pathogenesis may involve various disturbances including endothelial dysfunction and dysautonomia. The involvement of a low testosterone level is still debated. The aim of this study was... -
Type 2 diabetes mellitus but not overweight/obesity reduces testicular volume and endocrine function in men
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: E Musa --- Kaduna State University, Nigeria GC Musa --- University of Cape Town, South Africa E Salazar-Petres --- Universidad San Sebastián, Carrera de Obstetricia, Chile F Bello --- Ahmadu Bello University, Nigeria AG Bakari --- Ahmadu Bello University, Nigeria