keyword
MENU ▼
Read by QxMD icon Read
search

Sperm quality

keyword
https://www.readbyqxmd.com/read/28101935/effect-of-cholesterol-loaded-cyclodextrins-on-cryosurvival-of-dog-spermatozoa
#1
J Khan, M Z Tahir, A Khalid, A Sattar, N Ahmad
Cryopreservation affects integrity of cholesterol and phospholipids in the plasma membrane of sperm leading to decreased fertility of frozen-thawed semen. Cholesterol-loaded cyclodextrins (CLC) have been shown to improve post-thaw semen quality in various species. The aim of this study was to investigate the optimal concentration of CLC for better post-thaw semen quality in dogs. Semen collection, through digital manipulation, was conducted once a week in four adult German shepherd dogs (n = 20 ejaculates; five ejaculates/dog)...
January 18, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28100767/effects-of-season-on-bull-sperm-quality-in-thawed-samples-in-northern-spain
#2
M Sabés-Alsina, A Johannisson, N Lundeheim, M Lopez-Bejar, J M Morrell
The aim of the present study was to evaluate the possible effects of climate factors on sperm quality of Holstein dairy bulls housed in northern Spain. Semen samples from 11 Holstein dairy bulls were collected and cryopreserved in winter, spring and summer. Sperm quality parameters such as motility, morphology, plasma membrane integrity, acrosome status, mitochondrial membrane potential, DNA fragmentation index and reactive oxygen species were assessed. Samples collected in spring showed higher mean values of total and progressive motility compared with samples collected in winter...
January 18, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28100475/effects-of-obesity-and-exercise-on-testicular-leptin-signal-transduction-and-testosterone-biosynthesis-in-male-mice
#3
Xuejie Yi, Haining Gao, Dequan Chen, Donghui Tang, Wanting Huang, Tao Li, Tie Ma, Bo Chang
To explore the role of the testicular leptin and JAK-STAT(LEP-JAK-STAT) pathway in testosterone biosynthesis during juvenile stages and exercise for weight loss, male C57BL/6J mice were randomly divided into normal-diet (ND) and high-fat diet (HFD) groups. After 10 weeks, mice in the HFD group were further divided randomly into obese control (OC), obese moderate-volume exercise (OME), and obese high-volume exercise (OHE) groups. Mice in the OME group were provided with 2 h/day, 6 days/week swimming exercise for 8 weeks and mice in the OHE group underwent twice the amount of daily exercise intervention as the OME group...
January 18, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28099575/evaluation-of-sperm-quality-snakes-erythrolamprus-poecilogyrus-sublineatus-cope-1860-serpentes-dipsadidae
#4
A C Silva, A S Varela, T F Cardoso, E F Silva, D Loebmann, C D Corcini
Erythrolamprus poecilogyrus sublineatus (Cope, 1860), is a species widely distributed in the Pampa Domain, occurring in Rio Grande do Sul, Argentina and Uruguay, mainlyin the pampa region. In the coastal region of southern Brazil this is serpent is considered one of the most abundant. The purpose of the present study is to describe the techniques of sperm evaluation in vitro for E. poecilogyrus sublineatus in the coastal plain of Rio Grande do Sul, Brazil. After laparatomy the efferent vases were collected and the semen was diluted in 1ml Beltsville Thawing Solution...
January 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28091518/insights-into-the-molecular-basis-of-long-term-storage-and-survival-of-sperm-in-the-honeybee-apis-mellifera
#5
Ellen Paynter, A Harvey Millar, Mat Welch, Barbara Baer-Imhoof, Danyang Cao, Boris Baer
Honeybee males produce ejaculates consisting of large numbers of high quality sperm. Because queens never re-mate after a single mating episode early in life, sperm are stored in a specialised organ for years but the proximate mechanisms underlying this key physiological adaptation are unknown. We quantified energy metabolism in honeybee sperm and show that the glycolytic metabolite glyceraldehyde-3-phosphate (GA3P) is a key substrate for honeybee sperm survival and energy production. This reliance on non-aerobic energy metabolism in stored sperm was further supported by our findings of very low levels of oxygen inside the spermatheca...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091400/serum-lipid-profiles-are-associated-with-semen-quality
#6
Chin-Yu Liu, Yu-Ching Chou, Shyh-Hsiang Lin, Sheng-Tang Wu, Tai-Lung Cha, Hong-I Chen, Chih-Wei Tsao
We aimed to explore the associations between different lipid profiles and semen quality in a large-scale general male population. Sperm concentration, total sperm motility, progressive motility, and normal sperm morphology of total 7601 participants were recorded. The association of these semen parameters with the triglyceride, total cholesterol, high-density lipoprotein, low-density lipoprotein, and very low-density lipoprotein of serum lipid profiles was analyzed. Sperm concentration was statistically positively correlated with triglyceride and very low-density lipoprotein (adjusted P = 0...
January 13, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/28090465/does-intrauterine-injection-of-low-molecular-weight-heparin-improve-the-clinical-pregnancy-rate-in-intracytoplasmic-sperm-injection
#7
Ahmed Mohamed Kamel, Yahia El-Faissal, Mona Aboulghar, Ragaa Mansour, Gamal I Serour, Mohamed Aboulghar
OBJECTIVE: Heparin can modulate proteins, and influence processes involved in implantation and trophoblastic development. This study aimed to assess the improvement of clinical pregnancy and implantation rates after local intrauterine injection of low-molecular-weight heparin (LMWH) in patients undergoing intracytoplasmic sperm injection (ICSI). METHODS: A randomised case/control design was followed in women scheduled for ICSI. The study arm was injected with intrauterine LMWH during mock embryo transfer immediately following the ovum pickup procedure, while the control arm was given an intrauterine injection with a similar volume of tissue culture media...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28090461/effects-of-maternal-age-on-embryo-quality-and-pregnancy-outcomes-using-testicular-sperm-with-intracytoplasmic-sperm-injection
#8
Hye Won Choi, Yong-Seog Park, Sun-Hee Lee, Chun Kyu Lim, Ju Tae Seo, Kwang Moon Yang
OBJECTIVE: The aim of this study was to evaluate the influence of maternal age on fertilization, embryo quality, and clinical pregnancy in patients undergoing intracytoplasmic sperm injection (ICSI) using testicular sperm from partners with azoospermia. METHODS: A total of 416 ICSI cycles using testicular spermatozoa from partners with obstructive azoospermia (OA, n=301) and non-obstructive azoospermia (NOA, n=115) were analyzed. Female patients were divided into the following age groups: 27 to 31 years, 32 to 36 years, and 37 to 41 years...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28090458/efficient-isolation-of-sperm-with-high-dna-integrity-and-stable-chromatin-packaging-by-a-combination-of-density-gradient-centrifugation-and-magnetic-activated-cell-sorting
#9
Hee-Jun Chi, Su-Jin Kwak, Seok-Gi Kim, Youn-Young Kim, Ji-Young Park, Chang-Seok Yoo, Il-Hae Park, Hong-Gil Sun, Jae-Won Kim, Kyeong-Ho Lee
OBJECTIVE: This study was carried out to investigate the correlations of the sperm DNA fragmentation index (DFI) with semen parameters and apoptosis, and to investigate the effects of density-gradient centrifugation (DGC) and magnetic-activated cell sorting (MACS) on reducing the proportion of sperm with DNA fragmentation and protamine deficiency. METHODS: Semen analysis and a sperm DNA fragmentation assay were performed to assess the correlations between semen parameters and the DFI in 458 semen samples...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28088929/morphologic-analysis-of-sperm-from-two-neotropical-primate-species-comparisons-between-the-squirrel-monkeys-saimiri-collinsi-and-saimiri-vanzolinii
#10
Wlaisa V Sampaio, Karol G Oliveira, Danuza L Leão, Maria C Caldas-Bussiere, Helder L Queiroz, Fernanda P Paim, Regiane R Santos, Sheyla F S Domingues
Sperm morphometry can be applied to identify different animal groups and species and to evaluate sperm quality. Furthermore, knowledge on species-specific differences will help to enhance biological information, as well as to develop efficient reproductive technologies. The aims in the present study were to describe sperm morphometry from the recently characterized species S. collinsi and S. vanzolinii, to verify if the morphometric sperm patterns are similar or different between both species, and to determine if the sperm morphometry is affected by the levels of sperm defects using the S...
January 16, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28081510/gestational-and-lactational-exposure-to-di-isobutyl-phthalate-via-diet-in-maternal-mice-decreases-testosterone-levels-in-male-offspring
#11
Xiaoyang Wang, Nan Sheng, Ruina Cui, Hongxia Zhang, Jianshe Wang, Jiayin Dai
Phthalates are a large family of ubiquitous environmental chemicals suspected of being endocrine disruptors, with exposure to these chemicals during prenatal and postnatal development possibly resulting in reproductive disorders. Di-isobutyl phthalate (DiBP) is widely used in consumer and industrial products, and although its exposure in the general population has increased in recent years, the mechanisms behind DiBP-induced reproductive disorders in male offspring remain unclear. Here, pregnant mice were exposed to 0 or 450 mg/kg bw/day DiBP via diet from gestation day (GD) 0 to GD21...
January 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28078758/periconceptional-maternal-high-fish-and-olive-oil-low-meat-dietary-pattern-is-associated-with-increased-embryonic-growth-the-rotterdam-periconceptional-cohort-predict-study
#12
Francesca Parisi, Melek Rousian, Nicole A Huijgen, Anton H J Koning, Sten P Willemsen, Jeanne H M de Vries, Irene Cetin, Eric A P Steegers, Régine P M Steegers-Theunissen
OBJECTIVE: To investigate associations between periconceptional maternal dietary patterns and first trimester embryonic growth. METHODS: 228 women with singleton ongoing pregnancies were enrolled in a prospective periconceptional cohort study, comprising of 135 strictly dated spontaneous pregnancies and 93 pregnancies achieved after in vitro fertilization or intracytoplasmatic sperm injection (IVF/ICSI pregnancies). All women underwent longitudinal transvaginal three-dimensional ultrasound (3D-US) scans from 6(+0) up to 13(+0) weeks of gestation...
January 12, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28078721/use-of-the-fluorescent-dye-tetramethylrhodamine-methyl-ester-perchlorate-for-mitochondrial-membrane-potential-assessment-in-human-spermatozoa
#13
P Uribe, J V Villegas, R Boguen, F Treulen, R Sánchez, P Mallmann, V Isachenko, G Rahimi, E Isachenko
Mitochondrial membrane potential (ΔΨm) is an indicator of sperm quality and its evaluation complements the standard semen analysis. The fluorescent dye JC-1 has been widely used to assess sperm ΔΨm; however, some problems have been detected under certain experimental conditions. Another fluorescent compound, tetramethylrhodamine methyl ester perchlorate (TMRM), has been used in somatic cells and bovine spermatozoa but not in human spermatozoa. TMRM accumulates in hyperpolarised mitochondria and the fluorescence intensity of this compound correlates with ΔΨm...
January 11, 2017: Andrologia
https://www.readbyqxmd.com/read/28077271/occupational-exposure-to-pesticides-reproductive-hormone-levels-and-sperm-quality-in-young-brazilian-men
#14
Cleber Cremonese, Camila Piccoli, Fabio Pasqualotto, Ruth Clapauch, Rosalina Jorge Koifman, Sergio Koifman, Carmen Freire
The association of occupational exposure to current-use pesticides with reproductive hormones, semen quality, and genital measures was investigated among young men in the South of Brazil. A cross-sectional study was conducted in 99 rural and 36 urban men aged 18-23 years. Information on pesticide use was obtained through questionnaire. Serum and semen samples were analyzed for sex hormones and sperm parameters, respectively, and measurement of anogenital distance (AGD) and testis volume (TV) were performed...
January 7, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28076980/status-of-sperm-born-oocyte-activating-factors-pawp-plc%C3%AE-and-sperm-chromatin-in-uncapacitated-capacitated-and-acrosome-reacted-conditions
#15
Marziyeh Tavalaee, Kazem Parivar, Abdol-Hossein Shahverdi, Kamran Ghaedi, Mohammad Hossein Nasr-Esfahani
The aim of this study was to investigate the value of sperm factors PAWP and PLCζ involved in oocyte activation and sperm chromatin status, as indicators of sperm quality during uncapacitated, capacitated and acrosome-reacted conditions. Semen samples collected from 10 normozoospermic men and sperm factors PAWP, PLCζ, protamine deficiency and DNA fragmentation evaluated in fresh samples, processed sample by DGC (density gradient centrifugation), capacitated and acrosome reacted sperm, using immunofluorescence and flow cytometry...
January 12, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28073432/common-urologic-diseases-in-older-men-and-their-treatment-how-they-impact-fertility
#16
REVIEW
Gabriella Avellino, Didi Theva, Robert D Oates
As men age, medical and surgical diseases involving the genitourinary tract become more common. The conditions themselves, if not their treatments, can negatively impact the fertility potential of an affected man. Many older men maintain the desire to father children, so it is critical to understand the disturbed anatomy and physiology involved to properly counsel that individual. Should this or that treatment regimen be employed? Should sperm banking be undertaken before institution of a permanently ablative/suppressive therapy? What are the long-term consequences of one therapy over another vis-à-vis sperm production, sperm quality, and/or sperm transport? In this context, some of the more common genitourinary afflictions of the older male and the treatment options that are available will be discussed...
January 7, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28070708/delayed-treatment-of-undescended-testes-may-promote-hypogonadism-and-infertility
#17
Julia Rohayem, Alessandra Luberto, Eberhard Nieschlag, Michael Zitzmann, Sabine Kliesch
CONTEXT: Undescended testes at birth may be caused by testosterone deficiency during fetal development. It is unclear whether the process of failed descent contributes to permanent endocrine impairment. OBJECTIVES: To evaluate the impact of age at treatment of undescended testes on endocrine and spermatogenic testicular function in middle-aged men. PATIENTS AND METHODS: Reproductive hormone and semen data of 357 men with previously undescended testes were evaluated with respect to age at correction of testicular position and compared to those of 709 controls with eutopic testes at birth and normozoospermia...
January 9, 2017: Endocrine
https://www.readbyqxmd.com/read/28069183/evaluation-of-in%C3%A2-vitro-fertilization-outcomes-using-interleukin-8-in-culture-medium-of-human-preimplantation-embryos
#18
Guanyou Huang, Congrong Zhou, Chi-Ju Wei, Shuyun Zhao, Fa Sun, Hua Zhou, Wenjie Xu, Jun Liu, Chao Yang, Lingfei Wu, Guidan Ye, Zhuo Chen, Yongli Huang
OBJECTIVE: To investigate whether selected cytokines are detectable in the embryo culture medium (EM) of human preimplantation embryos (HPE) and what the relationship is of the cytokines with clinical outcomes. DESIGN: Cross-sectional study. SETTING: University-affiliated tertiary teaching hospital. PATIENT(S): Three-hundred and thirty infertile women who underwent fresh cycle in vitro fertilization (IVF) between January and December 2014...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28066955/dose-rates-of-antimicrobial-substances-in-boar-semen-preservation-time-to-establish-new-protocols
#19
M Schulze, M Grobbel, A Riesenbeck, S Brüning, J Schaefer, M Jung, R Grossfeld
To achieve a standardized number of spermatozoa in the final AI dose, varying amounts of extender fluid with a fixed concentration of antimicrobial substances are currently added to boar ejaculates. This practice ignores the different degrees of dilution of the antimicrobials in the end product. In calculating the final concentration of gentamicin in AI doses from 27,538 processed boar ejaculates, we demonstrated varying gentamicin concentrations in the resultant extended boar semen samples. The median concentration was 220...
January 9, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28066836/a-comparative-study-on-the-results-of-agonist-and-antagonist-protocols-based-on-serum-amh-levels-in-patients-undergoing-intracytoplasmic-sperm-injection
#20
Fatemeh Nikmard, Behrouz Aflatoonian, Elham Hosseini, Abbas Aflatoonian, Mehrdad Bakhtiyari, Reza Aflatoonian
BACKGROUND: Serum concentrations of antimullerian hormone (AMH) correlate with ovarian response during assisted reproduction treatment (ART) cycles. OBJECTIVE: This retrospective study attempted to evaluate the selection of ovarian stimulation protocols based on serum AMH levels in patients and its impact on the results of ART. MATERIALS AND METHODS: Based on AMH levels, the patients with tubal factor infertility were divided in three groups of normal, low and high AMH levels...
December 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
keyword
keyword
36590
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"