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Increased plasma and pituitary prolactin concentrations in adult male rats with selective elevation of FSH levels may be explained by reduced testosterone and increased estradiol production
Increased plasma pituitary prolactin concentrations adult male rats
2009/2/23
The roles of testosterone and estradiol in regulating prolactin concentrations were studied in acutely castrated adult male rats receiving subcutaneous Silastic implants of the sex steroids. Testost...
Increased in vitro binding of fresh and frozen-thawed human sperm exposed to a synthetic peptide
Profertility peptide sperm-egg binding human
2009/2/18
Prosaposin is a well-characterized, approximately 68-kDa protein found in many tissues and as a normal component of human semen. A fragment of prosaposin apparently is involved in primary sperm-eg...
Increased proliferation of Leydig cells induced by neonatal hypothyroidism in the rat
Propylthiouracil goitrogen cell kinetics ontogeny mitosis puberty
2009/2/16
Treatment of male rat pups with the reversible goitrogen 6-n-propyl-2-thiouracil (PTU), administered by adding 0.1% PTU to the mother's drinking water from birth through weaning, increases adult t...
Increased expression of a 68-kDa protein in the corpus cavernosum of some men with erectile dysfunction
Erectile dysfunction cavernous body gel electrophoresis structural proteins
2009/2/13
Erectile dysfunction (ED) may be caused by abnormalities of intracavernous penile structures. In order to investigate whether specific proteins could be identified that might be related to ED, the c...
Increased levels of interleukin-6 in seminal plasma of infertile men
Increased levels interleukin-6 seminal plasma infertile men
2009/2/12
The presence of various cytokines, namely the tumor necrosis factor (TNF-alpha), interferon (IFN-gamma), and interleukins (IL-1 beta and IL-6), was investigated in seminal plasma of fertile, infer...
Evidence for increased lipid peroxidative damage and loss of superoxide dismutase activity as a mode of sublethal cryodamage to human sperm during cryopreservation
superoxide dismutase activity sublethal cryodamage human sperm cryopreservation
2009/2/10
Cryopreservation of human sperm, now generally required in donor insemination programs, adversely affects the sperm in terms of standard sperm evaluation parameters and fertilizing ability. The fr...
An investigation of the requirement for increased LH secretion during the compensatory response in androgen secretion after unilateral castration of the adult rat
Hormone implants immunoactive bioactive
2009/2/10
The endocrine mechanisms underlying the response to unilateral castration were examined by determining systemic androgen and luteinizing hormone (LH) concentrations, as well as testicular vein andro...
Does sperm morphology play a significant role in increased sex chromosomal disomy? A comparison between patients with teratozoospermia and OAT by FISH
Sperm morphology sex chromosomal aneuploidy
2008/12/29
Eight semen samples from men with teratozoospermia (T), along with samples from 3 men with normal fertility and 5 samples from men with oligoasthenoteratozoospermia (OAT) were analyzed for X and Y c...
Purification of rat leydig cells：increased yields after unit-gravity sedimentation of collagenase-dispersed interstitial cells
Clusters gap junctions macrophages
2008/12/29
Procedures for purification of Leydig cells have facilitated studies of their regulatory biology. A multistep procedure that includes a filtration with nylon mesh (100-micron pore size) to separate ...
Leptin secretion from the epididymal fat pad is increased by the sexual maturation of the male rat
epididymal fat pad sexual maturation male rat
2008/12/26
FloridaAlthough leptin has been implicated as an important factor in triggering the onset of puberty in females, much less is known about the role of this adipose tissue hormone in the sexual maturati...
Spermatozoa Have Decreased Antioxidant Enzymatic Capacity and Increased Reactive Oxygen Species Production During Aging in the Brown Norway Rat
Oxidative stress epididymis glutathione peroxidase superoxide dismutase reproduction sperm
2008/12/24
As the proportion of aged males attempting to reproduce continues to rise, so does the concern regarding the quality of spermatozoa from aged men. An imbalance between the generation of reacti...
Increased Aneuploidy Rate in Sperm With Fragmented DNA as Determined by the Sperm Chromatin Dispersion（SCD）Test and FISH Analysis
Human fragmentation
2008/12/24
Previous studies suggest that sperm DNA fragmentation may be associated with aneuploidy. However, currently available tests have not made it possible to simultaneously perform DNA fragmentatio...
Factors Affecting the Increased Prevalence of Erectile Dysfunction in Greek Hypertensive Compared With Normotensive Subjects
Erectile function hypertension hypertension severity hypertension treatment age
2008/12/24
Arterial hypertension is considered a risk factor for erectile dysfunction. The aim of the study was to evaluate the prevalence of erectile dysfunction in hypertensive compared with normotensi...
Primary Flagellar Abnormality Is Associated With an Increased Rate of Spermatozoa Aneuploidy
Chromosome abnormalities FISH flagellum male infertility sperm
2008/12/22
The frequencies of aneuploid and diploid spermatozoa were determined in 3 patients presenting a complete asthenozoospermia due to a primary and specific flagellar anomaly: patients 1 and 2 presented...
Increased Expression of Estrogen Receptor ß in Pachytene Spermatocytes After Short-Term Methoxyacetic Acid Administration
germ cell apoptosis testicular toxicity Laser Capture Microdissection
2008/12/22
Degeneration of primary spermatocytes by apoptosis occurs during normal spermatogenesis, as well as in several pathological conditions, including exposure to specific testicular toxicants. The mec...