BACKGROUND High rates of sub-fertility and adverse pregnancy outcomes were seen after age 40. In contrast to oogenesis, spermatogenesis continues in elderly men. OBJECTIVE To retrospectively study the impact of aging on semen parameters in male partners of infertile couples in the rural area of developing country over 10 years and to find out whether aging affects male factor fertility and va...

Csiszar A, Labinskyy N, Orosz Z, Xiangmin Z, Buffenstein R, Ungvari Z. Vascular aging in the longest-living rodent, the naked mole rat. Am J Physiol Heart Circ Physiol 293: H919–H927, 2007. First published April 27, 2007; doi:10.1152/ajpheart.01287.2006.— The naked mole rat (NMR; Heterocephalus glaber) is the longestliving rodent known [maximum lifespan potential (MLSP): 28 yr] and is a unique ...

The naked mole rat (NMR; Heterocephalus glaber) is the longest-living rodent known [maximum lifespan potential (MLSP): >28 yr] and is a unique model of successful aging showing attenuated declines in most physiological function. This study addresses age-related changes in endothelial function and production of reactive oxygen species in NMR arteries and vessels of shorter-living Fischer 344 rat...

To clarify the influence of gender on sympathetic and parasympathetic control of heart rate in middle-aged subjects and on the subsequent aging process, heart rate variability (HRV) was studied in normal populations of women ( n = 598) and men ( n = 472) ranging in age from 40 to 79 yr. These groups were divided into eight age strata at 5-yr intervals and were clinically diagnosed as having no ...

Tracheal mucous velocity measurements were made in 24 beagle dogs in five age groups, using a gamma camera to detect movement of instilled 99mTc-macroaggregated albumin. Age groups were defined as immature (9-10 mo), young adult (2.8-3.0 yr), middle aged (6.7-6.9 yr), mature (9.6-9.8 yr), and aged dogs (13.6-16.2 yr). Mean velocities were 3.6 +/- 0.4 (SE) mm/min in the immature dogs, 9.7 +/- 0....

Hearing loss accompanied with middle ear effusion was analyzed according to audiometric frequencies for different age group. Results for left and right ears were compared in/and between study and control group. Pure tone audiometry for bone and air conduction and tympanometry was performed in study group of ninety-eight children with conductive hearing loss and otitis media with effusion. Contr...

background lower gastrointestinal bleeding (lgib) in children has many different etiologies and is a serious problem that warrants careful diagnostic work-up. materials and methods 164 colonoscopies were done during one year for determining the etiologies of lgib in children who was referred to children's medical center hospital. analyses of results were based on age, sex, etiology and clinical...

background: human cystic echinococcosis (hydatidosis) continues to be an essen­tial cause of morbidity and mortality in many parts of the world. methods: we studied hydatid cyst pattern in hospitalized adult patients from 2003 to 2012 in mashhad and neyshabour , northeast of iran. results: overall, 1342 patients, 711 females (53%) and 631 males (47%) diag­nosed as infected with hydatid cyst wer...

conclusions the vitamin d levels of children aged more than 2 years are lower than those of children aged less than 2 years. thus, prescribing vitamin d-containing supplements in children older than 2 years may be beneficial. results the final study consisted of 286 children, 140 males and 146 females, with a mean age of 4.46 ± 2.82 yr. of these, 218 (76.22%) children, with a mean age of 5.09 ±...