Objective:To investigate the effect of anoxic cold environment at 4500 m altitude on female men-struation.Methods:From March 1 to March 20,2023,women in a unit at an altitude of 4500 meters were selected for reproductive health questionnaire survey,and were divided into≤6 months group,6 months to 12 months group and≥12 months group according to altitude exposure time.The changes of menstruation in each group were analyzed to explore the relevant influencing factors.Results:The total incidence of abnormal menstruation in working women in hypoxic cold environment was as high as 66.14%,and there was no statistically significant difference between the groups at different high-altitude exposure times(P＞0.05).The highest incidence of dys-menorrhea among the types of menstrual changes was 61.90%,but there was no statistically significant differ-ence between the groups at different high altitude exposure times(P＞0.05).There was a statistically significant difference(P＜0.05)in the proportion of insufficient sleep for at least 3 days per week,nervousness and anxiety,and training during their menstrual period in the women who experienced changes in their menstrual cycle com-pared to those who did not.Conclusions:Hypoxic cold environment can lead to the change of female menstrua-tion,and it is combined with sleep deficiency,tension and anxiety,and menstrual exercise.

METTL3 and METTL14 are two components that form the core heterodimer of the main RNA m6A methyltransferase complex (MTC) that installs m6A. Surprisingly, depletion of METTL3 or METTL14 displayed distinct effects on stemness maintenance of mouse embryonic stem cell (mESC). While comparable global hypo-methylation in RNA m6A was observed in Mettl3 or Mettl14 knockout mESCs, respectively. Mettl14 knockout led to a globally decreased nascent RNA synthesis, whereas Mettl3 depletion resulted in transcription upregulation, suggesting that METTL14 might possess an m6A-independent role in gene regulation. We found that METTL14 colocalizes with the repressive H3K27me3 modification. Mechanistically, METTL14, but not METTL3, binds H3K27me3 and recruits KDM6B to induce H3K27me3 demethylation independent of METTL3. Depletion of METTL14 thus led to a global increase in H3K27me3 level along with a global gene suppression. The effects of METTL14 on regulation of H3K27me3 is essential for the transition from self-renewal to differentiation of mESCs. This work reveals a regulatory mechanism on heterochromatin by METTL14 in a manner distinct from METTL3 and independently of m6A, and critically impacts transcriptional regulation, stemness maintenance, and differentiation of mESCs.
Animals ; Mice ; Methylation ; Chromatin ; Histones/metabolism* ; RNA, Messenger/genetics* ; Methyltransferases/metabolism* ; RNA/metabolism*

Objective:To explore the effects of the subspecialty group management mode in Operating Room nursing for patients with laryngeal cancer.Methods:Totally 70 patients with laryngeal cancer admitted to Henan Provincial People's Hospital from January to December 2020 who underwent laryngectomy concurrently with routine surgical nursing were selected as the control group, and 70 laryngeal cancer patients admitted from January to December 2021 who underwent laryngectomy and the subspecialty group management concurrently as the research group by convenience sampling. 84 nurses from the Operating Room of the hospital, including 14 specialist team leaders, were selected for the study. The preoperative waiting time, operation time, operation compliance rate, and nursing satisfaction were compared between the two groups. The nursing competence scores of Operating Room nurses were evaluated and compared before and after the introduction of the subspecialty group nursing management mode.Results:Patients in the research group reported a shorter preoperative waiting time and operation time, higher compliance rates in preoperative device preparation, drug preparation, body position placement, venipuncture, catheter indwelling, device cleaning, and higher nursing satisfaction than patients in the control group, with statistically significant differences ( P<0.05) . One year after the implementation of the subspecialty group nursing management mode, the nursing core competence scores of the specialist team leader and the post competency scores of all nurses in the Operating Room were higher than those before the implementation, and the differences were statistically significant ( P<0.05) . Conclusions:The subspecialty group management mode can significantly improve the nursing competence of Operating Room nurses, shorten the preoperative waiting time and operation time, and improve the compliance rate of surgical work and nursing satisfaction.

Objective:To explore the status of kinesiophobia in patients with heart failure during discharge transition period, and analyze its changing trend and influencing factors.Methods:The189 patients with heart failure treated in Henan Provincial People′s Hospital from February 2020 to April 2021 were conveniently selected as the research objects. The general situation questionnaire, the Tampa Scale for Kinesiophobia Heart, the Self-efficacy for Exercise Scale and the Control Attitudes Scale-Revised were used to investigate the patients 2-3 days before leaving the hospital, 1 month and 4 months after discharge.Results:The score of patients′ kinesiophobia deteriorated slightly from 2-3 days before discharge (48.62 ± 11.26) to 1 month after discharge (49.03 ± 11.24), and decreased with the extension of the transition time to 4 months after discharge (47.86 ± 11.11). The overall trend of improvement was statistically significant ( F = 17.92, P<0.01). The score of perceived disease control also showed the same change pattern, 2-3 days before discharge (27.34 ± 7.40), 1 month after discharge (26.18 ± 7.39), 4 months after discharge (27.76 ± 7.38), the difference was statistically significant ( F = 38.41, P<0.01). The score of the exercise self-efficacy of 4 months after discharge (35.63 ± 11.51) was higher than (34.00 ± 11.88) of 2-3 days before discharge and (34.20 ± 11.69) of 1 month after discharge ( F = 12.33, P<0.01). The generalized estimation equation showed that exercise self-efficacy ( B = -0.255, P<0.01) and perceived disease control ( B = -0.439, P<0.01) were protective factors of kinesiophobia in patients with heart failure. Path analysis showed that perceived disease control could not only directly predict patients′ kinesiophobia ( β = -0.461, P<0.01), but also indirectly affect patients′ kinesiophobia by acting on exercise self-efficacy (mediating effect = -0.21, 95% CI -0.293 - -0.136). The mediating effect accounted for 31% of the total effect. Conclusions:The kinesiophobia, perceived disease control and exercise self-efficacy in patients with heart failure during discharge transition were dynamic. Perceived disease control could not only directly predict patients′ kinesiophobia, but also indirectly affect it by acting on exercise self-efficacy. Nursing staff can develop nursing interventions based on perceived disease control or exercise self-efficacy to reducethe level of kinesiophobia inheart failure patients.

Objective To investigate the abnormal brain activity of first-episode depression by rest-ing state functional magnetic resonance imaging ( fMRI) .Methods Twenty-one adolescent participants diag-nosed with depression(AD) and 18 healthy controls ( HC) were recruited.Resting state fMRI brain scans were performed on all participants.Regional homogeneity ( ReHo) approach was applied to preprocess the fMRI datasets.The value of ReHo maps were obtained in the whole brain.Results ReHo values in the AD group were higher than those in the healthy controls in the right inferior temporal gyrus ( MINI:66,-24,-20) ,left upper cingulate cortex (-27,47,-6) ,frontal polar (-24,59,14) ,after upper left cingulate cortex (-1,-16,35),after the bottom left cingulate cortex (-2,-38,32),left praecuneus (-1,-48,65) com-pared with that in the healthy controls (P<0.05) .ReHo in the AD group decreased in the right middle tempo-ral gyrus (45,-34,32) compared with that in the healthy controls (P<0.05).Conclusion Extensive ReHo abnormalities were found in the brains of patients with first-episode,drug-naive depression,and these abnor-malities in spontaneous neural activity may contribute to the neuropathology of adolescent depression.

Wearable health monitoring systems that use wearable biosensors capturing human motion and physiological parameters, to achieve the wearer's movement and health management needs. Wearable health monitoring system is a noninvasive continuous detection of human physiological information, data wireless transmission and real-time processing capabilities of integrated system, can satisfy physiological condition monitoring under the condition of low physiological and psychological load. This paper first describes the wearable health monitoring system structure and the relevant technology applied to wearable health monitoring system, and focuses on the current research work what we have done associated with wearable monitoring that wearable respiration and ECG acquisition and construction of electric multi-parameter body area network. Finally, the wearable monitoring system for the future development direction is put forward a simple expectation.
Equipment Design ; Humans ; Monitoring, Ambulatory ; instrumentation ; Movement

Objective To assess the efficacy and safety of mifepristone combined with oral or vaginal misoprostol for termination of pregnancy between 8 and 16 weeks of gestation. Methods This was a randomized, multi-center, open clinical trial. A total of 625 women at 8-16 weeks of gestation were randomized to receive 200 mg oral mifepristone followed by either oral misoprostol 400 μg every 3 hours or vaginal misoprostol 400μg every 6 hours for a maximum of 4 doses 36-48 hours later. There were 417 women in oral group with 198 at 8-9 weeks and 219 at 10-16 weeks, while 208 women in vaginal group with 99 at 8-9 weeks and 109 at 10-16 weeks. The outcome measures were the success abortion rate, induction to abortion interval, the amount of bleeding, reoccurrence of menstruation and adverse events. Results Abortion rate was significantly higher in vaginal group [98.1% (202/206)] than that in oral group [94.0%(390/415), P=0.023]; concerning termination of pregnancy at 8-9 weeks and 10-16 weeks respectively, there were no significant differences between oral and vaginal groups (P=0.156, P=0.073). The induction to abortion interval was no significant difference in oral and vaginal group in different gestational weeks ( P=0.238, P=0.273). The average induction to abortion interval was (4.1 ± 6.6) hours and (6.0 ± 4.5) hours respectively in terminating 8-9 weeks and 10-16 weeks of gestation. Concerning the amount of bleeding within 2 hours of placenta expulsion, there was significant difference between oral group [(63±46) ml] and vaginal group [(55 ± 45) ml] in terminating 8-9 weeks of gestation (P=0.047), while there was no significant difference between groups in terminating 10-16 weeks of gestation [oral group (76 ± 52) ml versus vaginal group (76 ± 61) ml, P=0.507]. The reoccurrence of menstruation was about 37 days in both oral and vaginal groups. Two cases of incomplete abortion were serious adverse events (SAE) relating to treatment. The common adverse events (AE) of nausea and vomiting were significantly higher in oral group [57.2% (239/417), 36.3% (151/417)] than those in vaginal group [45.4% (94/208), 26.1% (54/208); P=0.005, 0.011]. Conclusion Oral or vaginal misoprostol combined with mifepristone, is effective and safe for termination of pregnancy between 8 and 16 weeks of gestation.

Wearable health monitoring systems that use wearable biosensors capturing human motion and physiological parameters, to achieve the wearer's movement and health management needs. Wearable health monitoring system is a noninvasive continuous detection of human physiological information, data wireless transmission and real-time processing capabilities of integrated system, can satisfy physiological condition monitoring under the condition of low physiological and psychological load. This paper first describes the wearable health monitoring system structure and the relevant technology applied to wearable health monitoring system, and focuses on the current research work what we have done associated with wearable monitoring that wearable respiration and ECG acquisition and construction of electric multi-parameter body area network. Final y, the wearable monitoring system for the future development direction is put forward a simple expectation.

Objective To study the expression of vascular endothelial growth factor(VEGF) mRNA in neonatal rats with HIBD and to explore the function of VEGF in HIBD. Methods Fourty-eight Wistar rats of 7-day-old were assigned randomly to the control or HIBD groups. The left common carotid artery of rats in HIBD group were isolated and ligated, then exposed to hypoxic environment (8%O 2) for two hours. In control group the rat left common carotid artery were isolated, but not ligated and not exposed to hypoxic environment. Animals were killed in 3 h, 12 h, 24 h and 3 d after HIBD. The expression of VEGF mRNA in hippocampus were examined by RT-PCR.Results VEGF164 was the most prominent transcript of VEGF mRNA splice variants. The expression of VEGF mRNA was present in control group, but there were no significant differences between time points ( F =0.176, P =0.911). Levels of VEGF mRNA in HIBD group were higher than that in the control group at all time points( P

This paper describes the analysis of insitu polymerization of monomeric reactants (PMR) polyimide resin solution by reversed phase ion pair suppression chromatography. the mobile phase consists of acetonitrile and water. The methyl sulphonic acid was used as an ion-pair reagent in the mobile phase. The addition of sodium perchlorate was required to increase the ionic strength of the mobile phase. The information was obtained on monomeric isomer distribution of PMR polyimide resin solution and purity of prepared materials.