RESUMO
The aim of this study was to observe sperm aneuploidy, DNA integrity, seminal alpha-glucosidase (NAG) and acrosin activity (AA) under testicular heat stress (SH). Spermatozoa were obtained from 30 healthy adult volunteers subjected to scrotal warming at 43°C for 30-40 min on two successive days per week for 3 months between February 2012 and September 2016. Aniline blue (AB), acridine orange (AO) staining, TUNEL assay and FISH analysis to evaluate sperm function, sperm DNA integrity and chromosomal abnormalities were carried on before, during and after SH. Sperm AA and NAG was measured by microplate reader. The mean parameters of sperm parameters, AA and NAG were significantly decreased. In contrast, the mean percentage of sperm DNA fragmentation and the proportion of aneuploidy of chromosomes 13, 18, 21, X and Y were significantly increased for spermatozoa collected during SH versus before SH (p < .01-.001). After stopping scrotal heating for 3 months, most parameters were completely restored to pre-SH levels. Sperm parameters, sperm DNA integrity, chromosomes, AA and NAG are affected by scrotal exposure to constant SH temperatures several degrees over normal physiological temperature, and after treatment, these parameters were reversibly restored to the level before SH in adult men.
RESUMO
The aim of this study was to evaluate the influence of abnormal glucose metabolism on cognitive function of patients with acute small-arterial occlusion (SAO). The present study included 1,211 patients, with small-artery occlusion according to the Trial of Org 10172 in acute stroke treatment (TOAST) classification, admitted between March 2014 and December 2016 to The Second Hospital of Jiaxing. According to cognitive function, the patients were divided into a group of normal cognitive function, a mild cognitive impairment group (MCI group) and a dementia group. The patients were also divided into normal a blood sugar group, an impaired glucose regulation group (IGR group) and a diabetes mellitus (DM) group based on glucose metabolism. Cognitive functions of patients in the different glucose metabolism groups were compared based on Mini-mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA). General data, medical history, neuropsychological assessment and haematological index of the patients in each group were analyzed. Logistic regression analysis was used to study independent risk factors influencing cognitive impairment. When comparing the group of normal cognitive function with the MCI group, there were no statistical significant differences between the MMSEs scores of patients among the three groups, but the difference in MoCAs scores had statistical significance. Hypertension history, hyperhomocysteinemia (Hhcy) and sedentariness were independent risk factors for SAO patients with MCI. When comparing the group of normal cognitive function with the dementia group, there were statistically significant differences (P<0.05) between the MMSE and MoCA scores of patients among the three groups. Abnormal glucose metabolism, old age, female, high blood pressure, Hhcy, family stroke history and sedentariness were independent risk factors for SAO patients with dementia. In conclusion, abnormal glucose metabolism impairing cognitive function is not an independent risk factor for SAO patients with MCI, but is an independent risk factor for SAO patients with dementia.
