Results 11 to 20 of about 8,359 (251)

Value of a testicular biopsy rating for prognosis in oligozoospermia. [PDF]

open access: bronzeBMJ, 1978
Testicular biopsies of 142 oligozoospermic men were used to obtain a testicular biopsy score count. These scores were clearly related to the chance of fertility, in contra-distinction to data on hormone concentrations and from analysis of semen. In 36 patients with a score of 9-10 there were 15 pregnancies; in 59 patients with a score of 8-9, 12; and ...
J. H. Aafjes   +2 more
openalex   +4 more sources

AZFb microdeletions and oligozoospermia—which mechanisms? [PDF]

open access: hybridFertility and Sterility, 2012
To characterize the deletion patterns and its breakpoints in oligozoospermic patients presenting AZFb and AZFc microdeletions and to understand the recombination mechanisms underlying these microdeletions.Case report.Genetics Department of Faculty of Medicine of Porto, Porto, Portugal.Two men with severe oligozoospermia and two men with nonobstructive ...
Ana Rita Soares   +5 more
openalex   +4 more sources

Fertility of rats with artificial oligozoospermia [PDF]

open access: bronzeReproduction, 1980
Three different methods to obtain "oligospermic" rats were investigated. (1) Surgical reduction of the amount of tubular tissue diminished the number of spermatozoa present in the epididymis, but the animals were not infertile as long as they were able to ejaculate (32/33 rats).
J. H. Aafjes, J. M. Vels, E. Schenck
openalex   +5 more sources

Chromosomal abnormalities and Y chromosome microdeletions in infertile men with azoospermia and oligozoospermia in Eastern China

open access: yesJournal of International Medical Research, 2020
Objective The objective was to investigate the frequency and type of chromosomal abnormalities and Y chromosome microdeletions in infertile men with azoospermia and oligozoospermia to ensure appropriate genetic counseling before assisted reproduction in ...
Jing Sha   +5 more
doaj   +1 more source

Assessment of Correlation between Androgen Receptor CAG Repeat Length and Infertility in Infertile Men Living in Khuzestan, Iran [PDF]

open access: yesInternational Journal of Fertility and Sterility, 2015
Background The androgen receptor (AR) gene contains a polymorphic trinucleotide repeat that encodes a polyglutamine tract in its N-terminal transactivation domain (N- TAD).
Saeid Reza Khatami   +4 more
doaj   +1 more source

Synergetic effect of hookah smoking on varicocele-associated male reproductive impairment in the Saudi community in Al Jouf region, Saudi Arabia

open access: yesUrology Annals, 2021
Purpose: The aim of this study is to explore the clinical relationship between the varicocele-associated male infertility with hookah smoking practice in the Saudi community in the al Jouf region.
Mohammed Jayed Alenzi
doaj   +1 more source

Nonsurgical Management of Oligozoospermia

open access: yesThe Journal of Clinical Endocrinology & Metabolism, 2020
AbstractMale infertility secondary to oligozoospermia is surprisingly common. Although a majority of cases are idiopathic, oligozoospermia can be caused by endocrine dysfunction, anatomic abnormalities, medications, or environmental exposures. The work-up includes excluding reversible factors such as hormonal deficiency, medication effects, and ...
Jeremy T Choy, John K. Amory
openaire   +3 more sources

Decreased Sperm Motility Retarded ICSI Fertilization Rate in Severe Oligozoospermia but Good-Quality Embryo Transfer Had Achieved the Prospective Clinical Outcomes. [PDF]

open access: yesPLoS ONE, 2016
INTRODUCTION:Spermatozoa motility is the critical parameter to affect the treatment outcomes during assisted reproductive technologies (ART), but its reproductive capability remains a little informed in condition of severe male factor infertility.
Jufeng Zheng   +7 more
doaj   +1 more source

Role of the GH-IGF1 axis on the hypothalamus–pituitary–testicular axis function: lessons from Laron syndrome

open access: yesEndocrine Connections, 2021
Background: Animal studies suggest that insulin-like growth factor 1 (IGF1 ) may influence the function of the hypothalamus–pituitary–testicular axis, especially in childhood, but the evidence in humans is scanty.
Rossella Cannarella   +4 more
doaj   +1 more source

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