ABSTRACT
Sleep is essential for the maintenance of human normal functions.Nowadays,the occurrence of active sleep deprivation(ASD)or passive sleep depriva-tion(PSD)is becoming more and more common due to the inability of the body adapting to the rapid changes in the internal and external environment.SD is not only an action,a brief process or a result,but also a directly or indirectly sustained state,which is associated to sleep time,circadian rhythm or sleep quality.SD can lead to numerous adverse effects on the body,such as sleep-related acute and chronic diseases.Long-term SD increases the risk of neurological and cardiovascular dis-eases as well as immune system dysfunction.In addi-tion,SD may affect the reproductive health of the body,giving rise to a series of potential fertility problems.In recent years,the correlation research and mechanism between SD and the related diseases have become a focus of scholars' attention.Numerous lines of evidence suggest that pathological sleep,such as insomnia and sleep apnea syndrome,is associated with impaired repro-ductive function.Disruptions in the circadian rhythm can also lead to impaired hypothalamic-pituitary-gonadal(HPG)axis function and thereby interfere with the repro-ductive process.Our research team has demonstrated that SD significantly affects the fertility of male and female rats and has adverse effects on reproduction.By new generation sequencing(NGS)and RT-PCR verifica-tion,we have identified differently expressed genes that are involved in mediating the effect of SD on fertility.However,the mechanisms and biological macromolecules regulated by SD are worthy of being further explored.This paper provides a brief review of SD research and then focuses on the adverse impact of SD on fertility,conducting a literature review to sort out the ideas and pro-vide references for research in this field.
ABSTRACT
Objective To investigate the differential expressions of serum proteins by proteomics approach in rat model of sleep deprivation. Methods A rat model of 24-h rapid eye movement sleep deprivation was induced by MMPM. Twenty-four rats were randomly and averagely divided into three groups, namely, model group (M), model control group (MC) and blank control group (BC). Changes of body mass in rats were observed. Morris water maze test was used to evaluate the effect of sleep deprivation on learning and memory ability. Serum proteins were separated by two-dimensional electrophoresis and identified by LC-MS/MS. Results There was no significant difference in rat body weight between BC group and MC group. After sleep deprivation, mental irritable, pelage dull and weight loss were found in M group, but no significant changes were found in learning and memory ability. There were no significant differences in the number of protein spots between three groups. Four proteins were down regulated:Serotransferrin, Glutathione peroxidase 3, Ig kappa chain C region, B allele and Collagen alpha-2(I) chain. Conclusion The short term sleep deprivation may be related to iron metabolism, oxidative stress and immune function in rats.
ABSTRACT
Objective To select the immunodominant epitope of human serum albumin(HSA)and provide the basis for set?ting up a special and rapid detecting method of HSA. Methods Bioinformatic method was used to compare protein sequences of hu?man,pig,horse,ox,and ovine,and the immunodominant epitopes of HSA were predicted. The E.coli preferred codons were used to design the DNA sequences of the selected epitopes. The genes of the epitopes were expressed after they were inserted into the PGEX-4T-2 vector. The recombinant antigens were identified and valued by HSA antibody with indirect ELISA. Results The length of the selected epitopes was H1〔126-162 amino acid(aa)〕,H2(314-355aa),and H3(373-424aa)and the relative molecular weight was 3.01×104,3.06×104 and 3.17×104,respectively. The epitope of 373-424 aa were more active and its cross-reactivity IC50 of enzyme-labeled antibody was 1.635 mg/L,which was higher than HSA(P<0.05). Conlusion The immunodominant epitope of HSA is obtained, which is significant for developing a rapid and special reagent of HSA.