Results 51 to 60 of about 8,597 (215)

Testosterone mediates life‐history trade‐offs in female mammals

Biological Reviews, Volume 100, Issue 2, Page 871-891, April 2025.
ABSTRACT Hormones mediate life‐history trade‐offs. In female mammals, such trade‐offs have been studied predominantly in the contexts of oestrogen, progesterone and prolactin. We evaluate the hypothesis that prenatal and postnatal testosterone levels structure and regulate trade‐offs in females involving components of reproduction and survival.
Bernard J. Crespi, Aiden Bushell, Natalie Dinsdale   +2 more
wiley   +1 more source

Insulin-Like Growth Factor (IGF)-I and -11 and IGFBinding Proteins-l, -2, and -3 in Children and Adolescents with Diabetes Mellitus: Correlation with Metabolic Control and Height Attainment. [PDF]

, 1995
The putative effects of diabetes and metabolic control on circulating levels of insulin-like growth factors (IGFs) and their binding proteins (IGFBPs) remain controversial.
Blum, Werner F., Hoeflich, Andreas, Kessler, Ulrike, Kiess, Wieland, Meiler, Barbara, Past, Roswitha, Strasser-Vogel, Brigitte   +6 more
core   +1 more source

Trisomy 26 in a Holstein calf with disorders of sex development

Animal Genetics, Volume 56, Issue 1, February 2025.
Abstract Hypospadias occurs sporadically in male livestock and is characterized by a non‐fused urethra during fetal development. In this study, perineal hypospadias, a bifid scrotum, penile hypoplasia, and bilateral abdominal cryptorchidism were diagnosed in a neonatal Holstein male calf.
Markus Freick, Joana G. P. Jacinto, Irene M. Häfliger, Jim Weber, Holger Behn, Ruben Schreiter, Cord Drögemüller   +6 more
wiley   +1 more source

بررسی مقايسه‌ای دو روش يک مرحله‌ای و دو مرحله‌ای در جراحی نوع هيپرپلازی آدرنال در کودکان با ابهام جنسی [PDF]

, 2009
زمينه و هدف: تکامل و شکل‌گيری جنسيت و دستگاه تناسلی جنين بستگی به عوامل مختلف همچون کروموزوم‌ها، گنادها، هورمون‌ها و آنزيم‌ها دارد. اختلال در هر کدام از عوامل ياد شده منجر به ابهام جنسی می‌گردد.
دلشاد, صلاح الدين
core  

Exclusion of the Locus for Autosomal Recessive Pseudohypoaldosteronism Type 1 from the Mineralocorticoid Receptor Gene Region on Human Chromosome 4q by Linkage Analysis. [PDF]

, 1995
Pseudohypoaldosteronism type 1 (PHA1) is an uncommon inherited disorder characterized by salt-wasting in infancy arising from target organ unresponsiveness to mineralocorticoids.
Bistritzer, T., Chung, E., Dillon, M., Gardiner, R.M., Hanukoglu, A., Hanukoglu, I., Kuhnle, U., Rees, M., Seckl, J., Thompson, R.   +9 more
core   +1 more source

Patterns of Co‐Occurring Birth Defects in Chinese Infants With Congenital Diaphragmatic Hernia: A National Hospital‐Based Surveillance Study

Birth Defects Research, Volume 117, Issue 1, January 2025.
ABSTRACT Background The landscape of co‐occurring birth defects among infants with congenital diaphragmatic hernia (CDH) remains underexplored. Aims This study aims to elucidate the complex patterns of co‐occurring defects in Chinese population. Materials and Methods We analyzed cases from the Chinese Birth Defects Monitoring Network (2007‐2019) with ...
Zhi‐Yu Chen, Wen‐Li Xu, Yu‐Yang Gao, Wen‐Yan Li, Zhen Liu, Jia‐Yuan Zhou, Li Dai   +6 more
wiley   +1 more source

Steroid 5 a-reductase type-2 Gene Mutations in the Turkish Population

Endocrinology Research and Practice, 2022
5a-reductase deficiency results from reduced conversion of testosterona to the more potent androgen, dihydrotestosterone. Alterations in 5a-reduc1ase type-2 gene are responsible from the syndrome.
Selçuk Can
doaj   +2 more sources

Amenorrhea Due to Defects in Steroid Biosynthesis [PDF]

, 1975
Amenorrhea as the first manifestation of a steroid biosynthetic defect is rather unusual. The common forms of congenital adrenal hyperplasia are classic examples of steroid biosynthetic defects.
Mathur, Rajesh S., Williamson, H. Oliver
core   +1 more source

Histology and gametogenesis in Heleobia piscium (Cochliopidae) from the Multiple Use Reserve ‘‘Isla Martín García,’’ Buenos Aires, Argentina [PDF]

, 2016
Heleobia piscium (d’Orbigny, 1835), a member of the Cochliopidae family found only in South America, is distributed from Entre Ríos, Delta del Paraná, and the littoral of the Río de la Plata down as far as to Punta Indio (Buenos Aires), the southernmost ...
Díaz, Ana Cristina, Martín, Stella Maris   +1 more
core   +3 more sources

46, XY Complete Gonadal Dysgenesis (Swyer Syndrome) Presenting as Primary Amenorrhea in a Normomorphic Adult Female From Kakamega, Kenya

Clinical Case Reports, Volume 13, Issue 1, January 2025.
ABSTRACT Differences/disorders of sex development (DSDs) are a diverse group of congenital conditions that result in disagreement between an individual's sex chromosomes, gonads, and/or anatomical sex. The 46, XY DSD group is vast and includes various conditions caused by genetic variants, hormonal imbalances, or abnormal sensitivity to testicular ...
Christian Omoaghe
wiley   +1 more source