Results 11 to 20 of about 314,234 (309)

Androgens by immunoassay and mass spectrometry in children with 46,XY disorder of sex development

Endocrine Connections, 2020
Objective: Steroid measurement is a challenge in pediatric endocrinology. Currently, liquid chromatography with tandem mass spectrometry (LC-MS/MS) is considered a gold standard for this purpose. The aim of this study was to co mpare both LC-MS/MS and
Letícia Ribeiro Oliveira, Carlos Alberto Longui, Guilherme Guaragna-Filho, José Luiz Costa, Rafael Lanaro, David Antônio Silva, Maria Izabel Chiamolera, Maricilda Palandi de Mello, André Moreno Morcillo, Andrea Trevas Maciel-Guerra, Gil Guerra-Junior   +10 more
doaj   +1 more source

Sex determination systems in reptiles are related to ambient temperature but not to the level of climatic fluctuation

BMC Evolutionary Biology, 2020
Background Vertebrates exhibit diverse sex determination systems and reptiles stand out by having highly variable sex determinations that include temperature-dependent and genotypic sex determination (TSD and GSD, respectively).
Paola Cornejo-Páramo, Andrés Lira-Noriega, Ciro Ramírez-Suástegui, Fausto R. Méndez-de-la-Cruz, Tamás Székely, Araxi O. Urrutia, Diego Cortez   +6 more
doaj   +1 more source

Pleistocene divergence in the absence of gene flow among populations of a viviparous reptile with intraspecific variation in sex determination

Ecology and Evolution, 2021
Polymorphisms can lead to genetic isolation if there is differential mating success among conspecifics divergent for a trait. Polymorphism for sex‐determining system may fall into this category, given strong selection for the production of viable males ...
Peta Hill, Erik Wapstra, Tariq Ezaz, Christopher P. Burridge   +3 more
doaj   +1 more source

Gender determination and gender gap: A cross sectional comparative study of mothers attending under five immunisation clinics in urban and rural areas

Journal of Family Medicine and Primary Care, 2021
Background: Sex ratio is an important sociodemographic characteristic of the country reflecting the status of its women and underlying socioeconomic and cultural patterns.
Shalini Rawat, Ashwini Yadav, Kamaxi Bhate   +2 more
doaj   +1 more source

Temperature-dependent sex determination in fish revisited: Prevalence a single sex ratio response pattern, and possible effects of climate change. [PDF]

, 2008
Ospina-Álvarez N, Piferrer F (2008) Temperature-Dependent Sex Determination in Fish Revisited: Prevalence, a Single Sex Ratio Response Pattern, and Possible Effects of Climate Change. PLoS ONE 3(7): e2837.
Piferrer, Francesc, Natalia Ospina-Alvarez, Francesc Piferrer, Ospina-Álvarez Natalia, Piferrer Francesc, Piferrer, F., Ospina-Álvarez, Natalia, Ospina-Alvarez, N.   +7 more
core   +1 more source

408 Cases of Genital Ambiguity Followed by Single Multidisciplinary Team during 23 Years: Etiologic Diagnosis and Sex of Rearing

International Journal of Endocrinology, 2016
Objective. To evaluate diagnosis, age of referral, karyotype, and sex of rearing of cases with disorders of sex development (DSD) with ambiguous genitalia. Methods. Retrospective study during 23 years at outpatient clinic of a referral center.
Georgette Beatriz De Paula, Beatriz Amstalden Barros, Stela Carpini, Bruna Jordan Tincani, Tais Nitsch Mazzola, Mara Sanches Guaragna, Cristiane Santos da Cruz Piveta, Laurione Candido de Oliveira, Juliana Gabriel Ribeiro Andrade, Guilherme Guaragna-Filho, Pedro Perez Barbieri, Nathalia Montibeler Ferreira, Marcio Lopes Miranda, Ezequiel Moreira Gonçalves, Andre Moreno Morcillo, Nilma Lucia Viguetti-Campos, Sofia Helena Valente Lemos-Marini, Roberto Benedito de Paiva Silva, Antonia Paula Marques-de-Faria, Maricilda Palandi De Mello, Andrea Trevas Maciel-Guerra, Gil Guerra-Junior   +21 more
doaj   +1 more source

Conflict over condition-dependent sex allocation can lead to mixed sex-determination systems [PDF]

, 2014
Theory suggests that genetic conflicts drive turnovers between sex-determining mechanisms, yet these studies only apply to cases where sex allocation is independent of environment or condition.
Kuijper, B, Pen, Ido, Pen, I, Kuijper, Bram   +3 more
core   +1 more source

Clinical and Laboratorial Features That May Differentiate 46,XY DSD due to Partial Androgen Insensitivity and 5α-Reductase Type 2 Deficiency

International Journal of Endocrinology, 2012
The aim of this study was to search for clinical and laboratorial data in 46,XY patients with ambiguous genitalia (AG) and normal testosterone (T) synthesis that could help to distinguish partial androgen insensitivity syndrome (PAIS) from 5α-reductase ...
Nélio Neves Veiga-Junior, Pedro Augusto Rodrigues Medaets, Reginaldo José Petroli, Flávia Leme Calais, Maricilda Palandi de Mello, Carla Cristina Telles de Sousa Castro, Guilherme Guaragna-Filho, Letícia Espósito Sewaybricker, Antonia Paula Marques-de-Faria, Andréa Trevas Maciel-Guerra, Gil Guerra-Junior   +10 more
doaj   +1 more source

FGF9 and WNT4 act as antagonistic signals to regulate mammalian sex determination [PDF]

, 2006
The genes encoding members of the wingless-related MMTV integration site (WNT) and fibroblast growth factor (FGF) families coordinate growth, morphogenesis, and differentiation in many fields of cells during development.
Robin Lovell-Badge, Sekido, R, Behringer, Richard R, Capel, Blanche, Lovell-Badge, R, DiNapoli, Leo, Blanche Capel, Chaboissier, Marie-Christine, Behringer Richard R, Lovell-Badge, Robin, DiNapoli Leo, Poulat Francis, Behringer, RR, Kim Yuna, Kobayashi, Akio, Poulat, F, Behringer, Richard,, Behringer, Richard, R., Brennan, J, Chaboissier, M-C, Capel, B, Leo DiNapoli, Ryohei Sekido, Kim, Y, Kim, Yuna, Yuna Kim, Marie-Christine Chaboissier, Francis Poulat, Jennifer Brennan, Lovell-Badge Robin, Akio Kobayashi, Kobayashi Akio, DiNapoli, L, Brennan Jennifer, Capel Blanche, Kobayashi, A, Brennan, Jennifer, Richard R Behringer, Poulat, Francis, Chaboissier Marie-Christine, Sekido, Ryohei, Sekido Ryohei   +41 more
core   +1 more source

Mandibular ramus as a strong expressor of sex determinations: A digital radiographic study

Journal of Pharmacy and Bioallied Sciences, 2021
Background: This study aimed to assess the effectiveness of mandibular ramus in gender identification in Haryana population. Materials and Methods: One hundred patients were assessed. Panoramic radiological examination was done. Following parameters were
Ramneet Kaur, Shambulingappa Pallagatti, Amit Aggarwal, Preeti Garg Mittal, MandeepSingh, Mili Lalitkumar Patel   +5 more
doaj   +1 more source