نتایج جستجو برای: y/q ratio

تعداد نتایج: 502303  

Journal: :Annals of clinical and laboratory science 2015
Chi Hyun Cho Baik-Lin Eun Seon Hee Kwon Myung Hyun Nam Chae Seung Lim Chang Kyu Lee Yunjung Cho Young Kee Kim Soo Young Yoon

Abnormal Y chromosome includes Yq– of various extents (excluding normal Yq variation), Yp–, r(Y), and isochromosomes or isodicentric chromosomes, written variously as i(Yp), idic(Yp), i(Yq), and idic(Yq) [1]. The least rare of these rare conditions is the Y isochromosome, or isodicentric chromosome, usually seen as 46,X,i(Y)(p10) or 46,X,i(Y) (q11), in which the essential imbalance is a double ...

2018
Stacy Colaco Deepak Modi

The human Y chromosome harbors genes that are responsible for testis development and also for initiation and maintenance of spermatogenesis in adulthood. The long arm of the Y chromosome (Yq) contains many ampliconic and palindromic sequences making it predisposed to self-recombination during spermatogenesis and hence susceptible to intra-chromosomal deletions. Such deletions lead to copy numbe...

Journal: :Journal of Pure and Applied Algebra 2023

We show how to compute the pre-images of multiplication by 3 in group points an elliptic curve E over a field k characteristic different from 2 and such that E[3](k)=E[3]. Q=(xQ,yQ)∈[3]E(k) if only yQ−d−m(xQ−c) is cube for every 3-torsion point (c,d)∈E[3], where m slope tangent at (c,d). reduce our problem computation most independent cubic roots plus few polynomial operations.

2014
Sang Hee Park Sung Han Shim Yong Wook Jung Da Hee Kim Su Jin Kang Sun Ok Park Dong Hyun Cha

phenotypically normal females with secondary amenorrhea and translocation between Xq and Yq. To the best of our knowledge, the detection of Xq;Yq translocation at prenatal diagnosis has not been reported. Herein, we report the prenatal diagnosis of a de novo unbal­ anced Xq;Yq translocation for the first time and discuss issues in genetic counseling to be given to patients with this particular ...

A NIEVA, B SUH, C MALLIDIS, DM De KRETSER, F SAHEBJAM, H NAJMABADI, HW GORDEN BAKER, KA LOVELAND, L RAMIREZ, M GUTIERREZ, RI McLACHLAN, S ARVER, S BHASIN, S SAHEBJAM, W TAYLOR,

It is now agreed that 10-25% of infertile men with azoospermia have submicroscopic deletions of the Y chromosome long ann (yq), consistent with the proposed location of the azoospermia locus (AZF) in Yq 11.23. However, it is not known whether Yq microdeletions are unique to men with azoospermia or whether they are also observed in infertile men with less severe defects of spermatogenesis (o...

Journal: :Asian journal of andrology 2010
Xiao-Bin Zhu Yu-Lin Liu Wei Zhang Ping Ping Xiao-Rong Cao Yong Liu Yi-Ran Huang Zheng Li

This study was carried out to analyze the vertical transmission of Yq AZFc microdeletions from father to son in infertile Han Chinese families to investigate genetic factors and family background affecting fertility status. The peripheral blood of infertile males in 19 Han families was extracted and screened with modified multiplex polymerase chain reaction (PCR). Family trees were drawn accord...

Journal: :Genetics 2004
Aminata Touré Maria Szot Shantha K Mahadevaiah Aine Rattigan Obah A Ojarikre Paul S Burgoyne

The mouse Y chromosome carries 10 distinct genes or gene families that have open reading frames suggestive of retained functionality; it has been assumed that many of these function in spermatogenesis. However, we have recently shown that only two Y genes, the testis determinant Sry and the translation initiation factor Eif2s3y, are essential for spermatogenesis to proceed to the round spermati...

Journal: :Journal of medical genetics 1997
R S Verma S K Gogineni S M Kleyman R A Conte

A fetus was prenatally diagnosed as having a Y(nfqs) chromosome which was inherited from the father. With the QFQ technique, the Yqh was observed to be nonfluorescent and contained cytological satellites which were attached to the terminal long arm. The satellites were positively stained by the Ag-NOR technique suggesting that the NORs were active. A battery of DNA probes was used to characteri...

Journal: :Human molecular genetics 2011
Peter J I Ellis Joanne Bacon Nabeel A Affara

In common with other mammalian sex chromosomes, the mouse sex chromosomes are enriched for genes with male-specific function such as testis genes. However, in mouse there has been an unprecedented expansion of ampliconic sequence containing spermatid-expressed genes. We show via a phylogenetic analysis of gene amplification on the mouse sex chromosomes that multiple families of sex-linked sperm...

Journal: :Molecular medicine reports 2015
Yan-Ming He Hong-Jie Yang Qiang Yang Jin-Gang Cui Tian-Zhan Wang Yi Chen Pei-Wei Wang Teng Zhang Wen-Jian Wang

Hypertension is a chronic disease with a high prevalence, and is associated with a high risk of vascular disease and premature death. Traditional Chinese medicine has been administered to treat hypertension for many years. In the present study, the effects of Yiqi Huaju formula (YQ; a compound used in traditional Chinese herbal medicine) were observed in salt‑sensitive hypertension, which was i...

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