Results 81 to 90 of about 17,124 (228)

A meiotic study of two translocations and a tertiary trisomic in the mouse (Mus musculus)

, 1975
In this section, the order of the articles has not been closely followed. Each point ends with the number(s) of the article(s) (as given in the contents), where the conclusion is based on.1) Cytological meiotic studies of T(2;8)26H and T(1;13)70H ...
Boer, P., de, de Boer, P.
core  

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

Andrology, EarlyView.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas, Nina Mørup, Trine H. Johannsen, Anders Juul, Lise Aksglaede, Sofia B. Winge, Kristian Almstrup   +6 more
wiley   +1 more source

Anther development and pollen fertility in a polyploid cultivar of Platanus × acerifolia Willd. 'Huanong Panlong'

Ornamental Plant Research
Platanus, a key species in urban landscaping, is a classic allopolyploid with three distinct subgenomes. Polyploidization often induces meiotic irregularities, offering promising opportunities for breeding improved ornamental cultivars with suppressed ...
Zhiru Bao, Hui Long, Bei Li, Changsheng Shao, Jiaqi Zhang, Manzhu Bao   +5 more
doaj   +1 more source

Cytogenetic analysis of hybrids derived from wheat and Tritipyrum using conventional staining and genomic in situ hybridization

Biologia Plantarum, 2010
The new salt tolerant cereal, Tritipyrum (2n=6x=42, AABBEbEb) offers potential to introduce desirable characters for wheat improvements. This study was aimed to generate a segregating population from Iranian local wheat cultivars (2n=6x=42, AABBDD) and ...
G. Mirzaghaderi, G. Karimzadeh, H. S. Hassani, M. Jalali-Javaran, A. Baghizadeh   +4 more
doaj   +1 more source

The role of iron in normal and impaired testicular function

Andrology, EarlyView.
Abstract Iron plays a critical role in testicular physiology, impacting spermatogenesis, testosterone production, and overall testicular function. Iron homeostasis is maintained through systemic and cellular regulatory mechanisms, including hepcidin‐mediated systemic iron control and the iron‐responsive element/iron regulatory protein (IRE/IRP) system ...
Aileen Harrer, Esther G. Meyron‐Holtz, Andreas Meinhardt   +2 more
wiley   +1 more source

Histone H2AFX Links Meiotic Chromosome Asynapsis to Prophase I Oocyte Loss in Mammals.

PLoS Genetics, 2015
Chromosome abnormalities are common in the human population, causing germ cell loss at meiotic prophase I and infertility. The mechanisms driving this loss are unknown, but persistent meiotic DNA damage and asynapsis may be triggers.
Jeffrey M Cloutier, Shantha K Mahadevaiah, Elias ElInati, André Nussenzweig, Attila Tóth, James M A Turner   +5 more
doaj   +1 more source

Meiotic Prophase Abnormalities and Metaphase Cell Death in MLH1-Deficient Mouse Spermatocytes: Insights into Regulation of Spermatogenic Progress

, 2002
The MLH1 protein is required for normal meiosis in mice and its absence leads to failure in maintenance of pairing between bivalent chromosomes, abnormal meiotic division, and ensuing sterility in both sexes.
April Pyle, Mary Ann Handel, Eaker, Shannon, Pyle, April, John Cobb, Cobb, John, Handel, Mary Ann, Shannon Eaker   +7 more
core   +1 more source

CRISPR/Cas9‐mediated Genome‐editing Reveals 10 Testis‐enriched Genes and One Non‐testis‐enriched Gene are Dispensable for Male Fecundity in Mice

Andrology, EarlyView.
ABSTRACT Background More than 1000 genes have been identified as predominantly expressed in the human testis. Advances in gene editing technologies have enabled the rapid and efficient generation of genetically engineered mice. This approach facilitates the screening of genes essential for spermatogenesis by analyzing knockout mouse models.
Yumiao Qiu, Keisuke Shimada, Masahito Ikawa   +2 more
wiley   +1 more source

Pollen quality, meiotic abnormalities and poliploidy inSisyrinchium commutatum (Iridaceae) [PDF]

, 2015
O comportamento meiótico de Sisyrinchium commutatum (Iridaceae) foi avaliado e associado com as altas taxas de inviabilidae polínica observada em uma população do sudeste do Brasil.
Avila Jr., Rubem Samuel de, Gil, A. S. Bragança, Urdampilleta, Juan Domingo   +2 more
core   +1 more source

Testicular SIRT1 Loss Reveals an Aging‐Like Proteomic Landscape and Precipitates Reproductive Deterioration

Andrology, EarlyView.
ABSTRACT Background Advanced paternal age is associated with reduced male fertility and testicular dysfunction. Among the molecular regulators involved in aging, SIRT1, a NAD+‐dependent deacetylase, plays a pivotal role in maintaining oxidative balance and cellular homeostasis.
María Iniesta‐Cuerda, Jiřina Havránková, Hedvika Řimnáčová, Jiří Moravec, František Liška, Martin Knytl, Milena Králíčková, Jan Nevoral   +7 more
wiley   +1 more source