Results 41 to 50 of about 128,725 (200)

Logistic Regression Analysis Factors Affecting Sperm Motility and Abnormal Sperm Morphology in Boars

open access: yesAnimals, 2019
Logistic regression models, including variables of boar breed, age, serum, and seminal plasma elements, were used to identify the influencing factors of sperm motility and morphology in this study.
Yinghui Wu   +5 more
doaj   +1 more source

Effect of competitive cues on reproductive morphology and behavioral plasticity in male fruitflies [PDF]

open access: yes, 2015
Phenotypic plasticity will be favored whenever there are significant fitness benefits of responding to environmental variation. The extent and nature of the plasticity that evolves depends on the rate of environmental fluctuations and the capacity to ...
Bretman, Amanda   +3 more
core   +1 more source

Co-evolution of male and female reproductive traits across the Bruchidae (Coleoptera) [PDF]

open access: yes, 2008
1. Despite the obvious importance of spermatozoa to individual reproductive success a general explanation of variation in spermatozoan form and function is still lacking. In species with internal fertilization, sperm not only have to interact with the
Andrés   +57 more
core   +1 more source

In-vitro application of pentoxifylline preserved ultrastructure of spermatozoa after vitrification in asthenozoospermic patients [PDF]

open access: yes, 2017
PURPOSE: To evaluate the effect of in vitro application of pentoxifylline (PX) on sperm parameters and ultrastructure after vitrification in asthenozoospermic patients. MATERIALS AND METHODS: A total of 30 asthenozoospermic semen samples (aged 25-45
Khalili, Ma   +7 more
core  

Contribution of Bacterial Infection to Male Infertility in Nigerians [PDF]

open access: yes, 2009
There is disagreement as to the influence of certain microbial infection on male infertility and such agents are ignored. The incidence of these microbial agents in seminal fluid isolates is on the increase.
Emokpae, MA, Sadiq, NM, Uadia, PO
core   +1 more source

Effect of Breadfruit Leaf Extract on Sperm Quality in Diabetic Male Wistar Rats

open access: yesJurnal Kedokteran Diponegoro, 2023
Background: Diabetes mellitus can lead to various complications, one of the most devastating complications is infertility. Meanwhile, the antioxidant compounds of breadfruit leaves have been shown to help heal oxidative stress and therefore prevent ...
Rafi Ilmansyah   +7 more
doaj   +1 more source

Our experience in sperm morphology assessment [PDF]

open access: yesAsian Journal of Andrology, 2010
We read with great interest the article recently published by Menkeveld et al.1 as we have a double interest in sperm morphology assessment. The first one as a Clinical Andrology Laboratory (Laboratory of Male Fertility, Department of Clinical Biochemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Argentina) attempting to give ...
Julia Irene, Ariagno   +7 more
openaire   +2 more sources

Serum lipid profiles are associated with semen quality

open access: yesAsian Journal of Andrology, 2017
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
Chin-Yu Liu   +6 more
doaj   +1 more source

Decline of Sperm Quality over the Last Two Decades in the South of Europe: A Retrospective Study in Infertile Patients

open access: yesBiology, 2022
Semen quality has a direct relation to male fertility. Whether sperm variables in humans have decreased over the last years is still uncertain, with some studies showing a decline and others reporting no changes.
Emma Garcia-Grau   +7 more
doaj   +1 more source

Sperm morphology, swimming velocity, and longevity in the house sparrow Passer domesticus [PDF]

open access: yes, 2018
Sperm competition exerts strong selection on males to produce spermatozoa with an optimal morphology that maximizes their fertilization success. Long sperm were first suggested to be favored because they should swim faster.
Helfenstein, Fabrice   +2 more
core  

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