نتایج جستجو برای: semen parameter

تعداد نتایج: 228706  

2015
Yun-Ge Tang Li-Xin Tang Qi-Ling Wang Ge Song Yan-Jia Jiang Shun-Mei Deng Fang Jiang Wei-Bing Qin

Semen samples were collected from 1213 fertile men whose partners had a time-to-pregnancy (TTP) ≤12 months in Guangdong Province in Southern China, and semen parameters including semen volume, sperm concentration, total counts, motility, and morphology were evaluated according to the World Health Organization (WHO) 2010 guideline. All semen parameters analyzed were normal in ~62.2% of the total...

2014
Shun-Long Weng Chih-Min Chiu Feng-Mao Lin Wei-Chih Huang Chao Liang Ting Yang Tzu-Ling Yang Chia-Yu Liu Wei-Yun Wu Yi-An Chang Tzu-Hao Chang Hsien-Da Huang Zaid Abdo

Some previous studies have identified bacteria in semen as being a potential factor in male infertility. However, only few types of bacteria were taken into consideration while using PCR-based or culturing methods. Here we present an analysis approach using next-generation sequencing technology and bioinformatics analysis to investigate the associations between bacterial communities and semen q...

Journal: :Animal reproduction science 2014
P Imrat S Mahasawangkul C Thitaram P Suthanmapinanth K Kornkaewrat P Sombutputorn S Jansittiwate N Thongtip A Pinyopummin B Colenbrander W V Holt T A E Stout

In captivity, male Asian elephants often yield poor quality semen after transrectal manually assisted semen collection; however, the reasons for the disappointing semen quality are not clear. Here we test the hypothesis that accumulation of senescent spermatozoa is a contributory factor, and that semen quality can therefore be improved by more frequent ejaculation. To this end we investigated t...

Journal: :Environmental Health 2008
Sandra Yucra Manuel Gasco Julio Rubio Gustavo F Gonzales

BACKGROUND Organophosphates are broad class of chemicals widely used as pesticides throughout the world. We performed a cross-sectional study of associations between dialkylphosphate metabolites of organophosphates and semen quality among pesticide applicators in Majes (Arequipa), Peru. METHODS Thirty-one men exposed to organophosphate (OP) pesticides and 31 non-exposed were recruited (age, 2...

2013
Karin S. L. Johansson Tobias Vrede Karen Lebret Richard K. Johnson

The large bloom-forming flagellate Gonyostomum semen has been hypothesized to be inedible to naturally occurring zooplankton due to its large cell size and ejection of long slimy threads (trichocysts) induced by physical stimulation. In a grazing experiment using radiolabelled algae and zooplankton collected from lakes with recurring blooms of G. semen and lakes that rarely experience blooms, w...

Journal: :Andrologia 2012
J Fourie N Loskutoff C Huyser

The occurrence of bacteria in sperm samples intended for in vitro fertilisation can compromise the outcome of assisted reproductive techniques. Effective semen processing procedures should therefore be implemented to remove bacteria from semen. Unfortunately, technique failure does occur whereby bacteria can be found in processed sperm preparations. To improve the effectiveness of semen process...

2013
Tao Hu Xuexiang Weng Lishan Xu Cungui Cheng Peng Yu

Horizontal attenuation total reflection Fourier transformation infrared spectroscopy (HATR-FT-IR) studies on cuscutae semen and its confusable varieties Japanese dodder and sinapis semen combined with discrete wavelet transformation (DWT) and radial basis function (RBF) neural networks have been conducted in order to classify them. DWT is used to decompose the FT-IRs of cuscutae semen, Japanese...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2006
Cynthia Liliane Motta do Canto Aluisio C Segurado Cláudio Pannuti Agnaldo Cedenho Miguel Srougi Deborah Spaine Silvana Fernandes Nadily Carretiero Maria Carolina Bernal José Eduardo Levi

INTRODUCTION Prolonged survival of patients under HAART has resulted in new demands for assisted reproductive technologies. HIV serodiscordant couples wish to make use of assisted reproduction techniques in order to avoid viral transmission to the partner or to the newborn. It is therefore essential to test the effectiveness of techniques aimed at reducing HIV and HCV loads in infected semen us...

Journal: :Poultry science 2004
K Cole A M Donoghue P J Blore J S Holliman N A Cox M T Musgrove D J Donoghue

Campylobacter is one of the most commonly reported bacterial causes of human foodborne infections in the United States. Recent evidence has demonstrated that Campylobacter is present in poultry semen and may contribute to the vertical transmission between the breeder hen and offspring. As Campylobacter is considered sensitive to oxygen and cold temperature, the objective of this study was to de...

Journal: :international journal of reproductive biomedicine 0
mohammad baqer minaei mohammad barbarestani saeid nekoonam mir abbas abdolvahabi nasrin takzare mohammad hossein asadi

abstract background: sperm parameters and motion kinetics are affected by cryopreservation. objective: the main purpose of the current study was to determine the effect of different concentrations of trolox as an antioxidant to freezing-thawing procedure on human sperm kinematic parameter. materials and methods: semen was collected from 20 normal donors and divided into five aliquots prior to c...

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