Study on Influencing Factors of Semen Quality in Fertile Men.

Objective: To establish a system for evaluation of semen quality in fertile men by factor analysis (FA).

Methods: The FA method was used to analyze five sperm test indicators for fertile men (sperm pH, sperm motility, sperm progressive motility, semen density, and total sperm number) to determine the evaluation standard of semen quality. Pearson analysis was adopted for correlation testing.

A Factor Analysis Model for Rapid Evaluation of the Semen Quality of Fertile Men in China.

Objective: The objective of this study is to reduce the dimension of several indicators with a strong correlation when conducting semen quality analysis in a small number of comprehensive variables that could retain most of the information in the original variables.

Methods: A total of 1132 subjects were recruited from the Maternal and Child Health Institutions of seven provinces in mainland China. They completed the questionnaire and provided semen samples.

[Effects of spraying salicylic acid and potassium dihydrogen phosphate on physiological cha-racteristics and grain yield of single-season rice under high temperature condition].

To explore new practical means of alleviating the negative effect of heat stress on rice plants during the heading-flowering stage, a field experiment was conducted in Ji'an, Yugan, and Nanchang counties of Jiangxi Province from 2017 to 2018 with three indica hybrid rice varieties. Under ambient high temperature condition during the heading-flowering period, we sprayed five concentrations of salicylic acid (SA) (SA-SA: 100, 500, 1000, 1500, 2000 μmol·L) and five concentrations of KHPO (K-K: 7.35, 14.

Paeoniflorin attenuates hippocampal damage in a rat model of vascular dementia.

Paeoniflorn (PF), the principal bioactive component of prescribed in traditional Chinese medicine, possesses a wide range of biological effects and exhibits neuroprotective effects in numerous diseases. Previous studies have demonstrated that PF significantly attenuates memory impairment in rats with vascular dementia (VD). In the present study, a bilateral common carotid artery occlusion (BCCAO) rat model was used to explore the underlying mechanisms of PF.

Differential regulation of glial reactions in the central facial tract and the facial nucleus after facial neurorrhaphy.

We previously reported that perineuronal astrocytic and microglial reactions are drastically upregulated in the facial nucleus after facial axotomy at the brain stem surface or the stylomastoid foramen. Furthermore, periaxonal astrocytic and microglial reactions develop retrogradely in the central facial tract which contains proximal facial axons in the brain stem. Because reconnection of interrupted peripheral nerve by microsurgical suture is a common clinical practice, the aim of this study was to investigate the spatiotemporal patterns of glial reactions in the central facial tract and the facial nucleus after facial neurorrhaphy.

Effect of daily milk supplementation on serum and umbilical cord blood folic acid concentrations in pregnant Han and Mongolian women and birth characteristics in China.

Many studies have demonstrated the efficacy of folic acid (FA) supplementation in prevention of neural tube defects (NTDs), although the extent of NTDs varies among individuals of different races and ethnic origin. China is a multi-ethnic country with no standard practice for FA-fortified food. Milk is consumed by women, but little is known about the effects of milk on folate concentration in maternal blood and neonatal umbilical cord blood in Han and Mongolian women after stopping taking the supplement for a month and five month, respectively.

Tanshinol protects hippocampus and attenuates vascular dementia development.

Tanshinol (3-(3',4'-dihydroxyphenyl)-(2R)-lactic acid, TSL) is widely used in traditional Chinese medicine for the treatment of cardiovascular and cerebrovascular diseases. Here, we assessed whether TSL protected hippocampus and attenuated vascular dementia (VD) development in rats. The behavioral analysis showed that TSL could decrease the distance and latency time, and increase the swim speed in water maze in rats subjected to VD.

Sperm head vacuoles--light microscopic and ultrastructural observations: a case report.

Background: Sperm head vacuoles are easily detectable in human spermatozoa under the electron microscope. A sperm head vacuole is considered abnormal when it exceeds 20% of the head's cross-sectional area. The authors report a rare case of primary spermatozoa deformity with 100% vacuolated head and evaluate the correlation between presence of head vacuoles/nucleus vacuoles and abnormal transformation of nucleoprotamine types, defects of nucleoprotamine, and gene disorders of chromatin/chromosome/spermatogenesis.

Inhibition of nitric oxide synthase promotes facial axonal regeneration following neurorrhaphy.

Reconnection of interrupted peripheral nerve by microsurgical suture is a common clinical practice. However, the extent to which peripheral neurorrhaphy improves nerve regeneration and functional recovery remains unsatisfactory. Here, we used anatomical and electrophysiological techniques to investigate the temporal correlation between the expressions of oxidative stress-related biomarkers such as neuronal nitric oxide synthase (nNOS) and the facial axonal regeneration after an immediate facial nerve repair in adult rats since peripheral nerve lesion is well known to induce a dramatic increase of NOS expression in the affected neuronal cell bodies.

Dechlorination of trichloroethylene by immobilized autotrophic hydrogen-bacteria and zero-valent iron.

The efficiency of removing trichloroethylene (TCE) using co-immobilized zero-valent iron and autotrophic hydrogen-bacteria has been studied in this research. Laboratory results show that the combined physicochemical and biological system is much superior to either physicochemical or biological system alone in dechlorination of TCE. In addition to catalyzed hydrogenolysis reactions occurring between hydrogen gas and zero-valent iron particle surface, as well as autotrophic dechlorination of hydrogen-bacteria, the FeS produced by sulfate-reducing bacteria also contributes to the catalytic dechlorination mechanisms.

Reductive dechlorination of trichloroethylene by combining autotrophic hydrogen-bacteria and zero-valent iron particles.

The objective of this study was to evaluate the dechlorination rate (from an initial concentration of 180 micromol l(-1)) and synergistic effect of combining commercial Fe(0) and autotrophic hydrogen-bacteria in the presence of hydrogen, during TCE degradation process. In the batch test, the treatment using Fe(0) in the presence of hydrogen (Fe(0)/H(2)), showed more effective dechlorination and less iron consumption than Fe(0) utilized only (Fe(0)/N(2)), meaning that catalytic degradation had promoted transformation of TCE, and the iron was protected by cathodic hydrogen. The combined use of Fe(0) and autotrophic hydrogen-bacteria was found to be more effective than did the individual exercise even though the hydrogen was insufficient during the batch test.