Results 91 to 100 of about 21,382 (249)

Testicular volume in non‐obstructive azoospermia with a history of bilateral cryptorchidism may predict successful sperm retrieval by testicular sperm extraction

open access: yesReproductive Medicine and Biology, 2020
Purpose Cryptorchidism is one of the most common causes of non‐obstructive azoospermia (NOA) in adulthood. Even if early orchidopexy is performed to preserve fertility potential, some patients still suffer from azoospermia.
Akiyoshi Osaka   +9 more
doaj   +1 more source

Estimates of body sizes at maturation and at sex change, and the spawning seasonality and sex ratio of the endemic Hawaiian grouper (Hyporthodus quernus, F. Epinephelidae) [PDF]

open access: yes, 2011
A case study of the reproductive biology of the endemic Hawaiian grouper or hapu’upu’u (Hyporthodus quernus) is presented as a model for comprehensive future studies of economically important epinephelid groupers.
DeMartini, Edward E.   +2 more
core  

Exploring the Impact of Polystyrene Microplastic Beads on Male Gonads of the Marine Mussel, Mytilus galloprovincialis

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Plastic, with its remarkable versatility and numerous applications, has greatly benefited humanity. However, its extreme resistance to natural degradation means it persists in the environment for long periods, causing global environmental problems.
Teresa Chianese   +13 more
wiley   +1 more source

Evaluation of Spermatozoal Rna Extraction Methods [PDF]

open access: yes, 2016
The study was aimed to compare different RNA isolation methods from sperm and testicular tissue. A suitable sperm purification technique is required as sperm RNA yield is strongly correlated with the number of sperms.
Das, Sovan
core  

Complex patterns of male germline instability and somatic mosaicism in myotonic dystrophy type 1 [PDF]

open access: yes, 2000
The genetic basis of myotonic dystrophy type 1 (DM1) is the expansion of a CTG repeat in the 3' untranslated region of DM1PK . Once into the disease range, the repeat becomes highly unstable and is biased toward expansion in both somatic and germline ...
Baiget, M.   +3 more
core   +1 more source

Global Fluoride Toxicology Landscape: Bibliometric Approaches and Scientific Mapping

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT This study analyzed research trends in the 100 most‐cited articles on fluoride toxicology, a topic widely debated due to the toxic effects associated with levels deemed safe for human exposure. A bibliometric analysis was conducted using the Web of Science‐Core Collection, extracting data such as citation count, authors, keywords, journal ...
Maria Karolina Martins Ferreira   +8 more
wiley   +1 more source

Klinefelter's Syndrome in the Adult: Case Report and Review [PDF]

open access: yes, 2011
Introdução: O diagnóstico de Síndrome de Klinefelter é habitualmente tardio (na idade adulta), devido à paucidade de sintomas e amplo espectro clínico e fenotípico, e é frequentemente feito na sequência do estudo de causas de infertilidade.
Barros, F, Forte, JP, Gameiro, C
core  

Environmental Contaminant Accumulation in Freshwater Turtles Inhabiting Three Rivers of the Permian Basin, New Mexico, USA

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Freshwater turtles are valuable sentinels of aquatic systems due to their long lifespans and resilience in environments impacted by contaminants. The Permian Basin, dominated by the oil and gas sector, spans western Texas and southeastern New Mexico, USA, including the Pecos River and its tributaries, the Delaware and Black Rivers.
Ana G. G. Sapp   +4 more
wiley   +1 more source

Intersex related gene expression profiles in clams Scrobicularia plana : molecular markers and environmental application [PDF]

open access: yes, 2015
Intersex, the appearance of female characteristics in male gonads, has been identified in several aquatic species. It is a widespread phenomenon in populations of the bivalve, Scrobicularia plana, from the southwest coast of the U.K.
Alvarez-Munoz, Diana   +14 more
core   +1 more source

Synergistic Toxicity of Low‐Concentration Metal Mixture on Male Rats: Reproductive, Renal, and Hepatic Effects

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Mining plays a crucial role in economic development, but improper management can lead to severe environmental degradation. Particularly for iron ore, mining generates vast amounts of tailings often stored in unstable dams. This study aims to investigate the toxicological impacts of environmentally relevant concentrations of metals mixture ...
Kalinka Helóra Gomes de Almeida   +7 more
wiley   +1 more source

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