Objective To explore the changes in cognitive neural networks in AD patients at differ-ent stages of disease progression to provide electrophysiological basis for the pathogenesis and early diagnosis and treatment of AD.Methods A total of 84 patients admitted to Department of Neurology of General Hospital of Tianjin Medical University from September 2018 to June 2022 were prospectively recruited,and divided into AD patients group(42 cases)and MCI group(42 cases)according to their disease severity.Another 42 healthy individuals who taking physical examination during the same period were subjected and served as HC group.Post-resting EEG data were analyzed with Matlab software,and coherence analysis was performed by self-programmed program.Univariate analysis of variance was used to compare the interhemispheric and intra-hemispheric coherence values of six frequency bands in the three groups.Results The cohe-rence values of the related electrode pairs in the anterior head(frontal region+anterior tem-poral region)were significantly lower in the AD group than in the HC group(P＜0.05),with the Alpha and Beta dominant bands and dominant hemispheres dominant,while the values of related electrode pairs in the posterior head(temporal region)were obviously higher in the AD group than the HC group(P＜0.05),with the Gamma band dominant.In all the frequency bands except the Alpha band,the AD group had higher coherence values in most of the electrode pairs than the HC group,and the Gamma band was the most extensive.In the MCI group,only the coherence value of the electrodes in the occipito-posterior temporal region(O2-T6)in the right Alpha band was higher than that in the HC group(P＜O.05).Except Gamma band,the coherence value of the related electrode pairs in the frontal region was notably lower in the AD group than the MCI group(P＜0.05),and the Alpha and Beta bands were dominant.The results of interhemispheric cohe-rence showed that most of the electrode pairs in the AD group had higher coherence values than the MCI group in all the frequency bands and the Gamma band(P＜0.05).Conclusion EEG coherence can provide electrophysiological basis for the pathogenesis and early diagnosis of AD.

Objective To explore the changes in cognitive neural networks in AD patients at differ-ent stages of disease progression to provide electrophysiological basis for the pathogenesis and early diagnosis and treatment of AD.Methods A total of 84 patients admitted to Department of Neurology of General Hospital of Tianjin Medical University from September 2018 to June 2022 were prospectively recruited,and divided into AD patients group(42 cases)and MCI group(42 cases)according to their disease severity.Another 42 healthy individuals who taking physical examination during the same period were subjected and served as HC group.Post-resting EEG data were analyzed with Matlab software,and coherence analysis was performed by self-programmed program.Univariate analysis of variance was used to compare the interhemispheric and intra-hemispheric coherence values of six frequency bands in the three groups.Results The cohe-rence values of the related electrode pairs in the anterior head(frontal region+anterior tem-poral region)were significantly lower in the AD group than in the HC group(P＜0.05),with the Alpha and Beta dominant bands and dominant hemispheres dominant,while the values of related electrode pairs in the posterior head(temporal region)were obviously higher in the AD group than the HC group(P＜0.05),with the Gamma band dominant.In all the frequency bands except the Alpha band,the AD group had higher coherence values in most of the electrode pairs than the HC group,and the Gamma band was the most extensive.In the MCI group,only the coherence value of the electrodes in the occipito-posterior temporal region(O2-T6)in the right Alpha band was higher than that in the HC group(P＜O.05).Except Gamma band,the coherence value of the related electrode pairs in the frontal region was notably lower in the AD group than the MCI group(P＜0.05),and the Alpha and Beta bands were dominant.The results of interhemispheric cohe-rence showed that most of the electrode pairs in the AD group had higher coherence values than the MCI group in all the frequency bands and the Gamma band(P＜0.05).Conclusion EEG coherence can provide electrophysiological basis for the pathogenesis and early diagnosis of AD.

Objective:To analyze the prevalence and disease burden of male and female infertility in China from 1990 to 2019.Methods:The global disease burden database of 2019 was used to analyze the prevalence of male and female infertility and disability adjusted life years (DALY) in China from 1990 to 2019 among the total Chinese male and female population and different age groups.Results:In 2019, the number, prevalence, DALY and DALY rate of male infertility in China were 14 577 432, 2 011.18/100 000, 77 983 person years, 1 076/100 000, respectively. The number, prevalence, DALY and DALY rate of female infertility were 37 884 300, 5 431.22/100 000, 197 046 person years, 28.25/100 000, respectively. The prevalence and disease burden of female infertility were higher than those of male infertility. The age group with the highest male prevalence rate and DALY rate were 35-39 and 30-34 years old respectively, the age group with the highest female prevalence rate and DALY rate were 40-44 and 35-39 years old respectively, and the age group with the highest female prevalence rate and DALY rate was 5 years later than the male age group. From 1990 to 2019, the prevalence rate and DALY rate of male and female infertility increased in the first 20 years or so, and decreased in the last 10 years or so. The prevalence rate and DALY rate of male and female infertility in China were significantly higher than those in the whole world and different socio-demographic index (SDI) regions.Conclusion:Although the prevalence rate and DALY rate of male and female infertility in China have decreased in recent years, the population base of China is large, and the disease burden of male and female infertility in the world is still large. Active prevention and treatment measures should be taken to reduce the disease burden of male and female infertility.

Objective:To analyze the prevalence and disease burden of male and female infertility in China from 1990 to 2019.Methods:The global disease burden database of 2019 was used to analyze the prevalence of male and female infertility and disability adjusted life years (DALY) in China from 1990 to 2019 among the total Chinese male and female population and different age groups.Results:In 2019, the number, prevalence, DALY and DALY rate of male infertility in China were 14 577 432, 2 011.18/100 000, 77 983 person years, 1 076/100 000, respectively. The number, prevalence, DALY and DALY rate of female infertility were 37 884 300, 5 431.22/100 000, 197 046 person years, 28.25/100 000, respectively. The prevalence and disease burden of female infertility were higher than those of male infertility. The age group with the highest male prevalence rate and DALY rate were 35-39 and 30-34 years old respectively, the age group with the highest female prevalence rate and DALY rate were 40-44 and 35-39 years old respectively, and the age group with the highest female prevalence rate and DALY rate was 5 years later than the male age group. From 1990 to 2019, the prevalence rate and DALY rate of male and female infertility increased in the first 20 years or so, and decreased in the last 10 years or so. The prevalence rate and DALY rate of male and female infertility in China were significantly higher than those in the whole world and different socio-demographic index (SDI) regions.Conclusion:Although the prevalence rate and DALY rate of male and female infertility in China have decreased in recent years, the population base of China is large, and the disease burden of male and female infertility in the world is still large. Active prevention and treatment measures should be taken to reduce the disease burden of male and female infertility.

Objective: To investigate the relationship of National Institute of Health Stroke Scale(NIHSS)with heart rate variability(HRV)and cardiac complication in elderly patients with acute cerebral infarction, and to clarify the effect of early drug intervention on the regulation of autonomic nerve function in patients with high NIHSS score. Methods: One hundred twenty-six inpatients with first-onset acute cerebral infarction(ACI)(the cerebral infarction group)and 40 healthy subjects with no history of stroke(the control group)were retrospectively enrolled.All subjects underwent examinations of NIHSS and 24 h dynamic electrocardiogram.According to NIHSS score, patients in the cerebral infarction group were divided into 3 subgroups: NIHSS score 0-4 group(n=32), NIHSS score 5-15 group(n=66)and NIHSS score ≥ 15 group(n=28). The difference in HRV parameters were compared between ACI patients and the controls.Ninety-four ACI patients with NIHSS score ≥5 were randomly divided into 2 groups: (1)the traditional treatment group(n=44), taking routine drugs for cerebral infarction; (2)the special treatment group(n=42), taking metoprolol sustained release tablet and Shensonyangxin capsule as add-on to the routine drugs for cerebral infarction.The 24 h dynamic electrocardiogram examination were conducted 30 days after treatment.The differences in HRV parameters and cardiac complications were compared between the two treatment groups. Results: In patients with acute cerebral infarction, the time-domain parameters of normal-to-normal intervals(NNI), standard deviation of normal-to-normal intervals(SDNN), square root of the mean squared successive differences between normal-to-normaI RR intervals(RMSSD), percentage of adjacent normal-to-normal intervals that differed more than 50 ms(PNN50), frequency domain parameters low-frequency(LF)power and high-frequency(HF)power were significantly reduced as compared with those in the control group(P<0.05). While, pulse rate and frequency domain parameters of sympathetic vagus balance index(LF/HF)were significantly increased(P<0.05). The time-domain parameters(NNI, SDNN, RMSSD and PNN50)and frequency domain parameters(LF, HF)were significantly reduced in the NIHSS score 5-15 group and NIHSS score ≥15 group as compared with the control group and the NIHSS score 0-4 group(P<0.05). The time-domain parameters(RMSSD and PNN50)and frequency domain parameters(LF and HF)were reduced(P<0.05), and the frequency domain parameters(LF/HF)were increased(P<0.05)in NIHSS score ≥15 group compared with in NIHSS score 5-15 group(P<0.05). Compared with pre-treatment, the special treatment group after treatment showed that the time domain parameters(NNI, SDNN, RMSSD and PNN50)and frequency domain parameters(LF and HF)were significantly increased(P<0.05), the frequency domain parameters(LF/HF)were significantly reduced(P<0.05)and the incidence of cardiac complication(total incidence of atrial arrhythmias and ventricular arrhythmias and cardiac complication)were significantly reduced(P<0.05). As compared with the traditional treatment group after treatment, the special treatment group after treatment showed that the time domain parameters(NNI, SDNN, RMSSD and PNN50)and frequency domain parameters(LF and HF)were significantly increased(P<0.05), frequency domain parameters(LF/HF)were significantly reduced(P<0.05)and the total incidence of cardiac complication were significantly reduced(18.4% or 7 cases vs.40.0% or 16 cases, P<0.05). Conclusions The HRV is decreased in patients with acute cerebral infarction.The reduction degree of HRV is more significant along with the higher NIHSS scores, which suggests that patients with high NIHSS scores are prone to an impairment of autonomic nerve function.For patients with high NIHSS scores after stroke, early drug intervention for regulating autonomic nerve function can effectively prevent the occurrence of cardiac emergencies and improve the prognosis of stroke.

Objective To investigate the Lemple-Zie complexity (LZC) characteristics in patients with Alzheimer' s disease(AD),mild cognitive impairment(MCI) and normal elderly,and the possibility of differentiating AD,MCI and normal elderly by LZC.Methods Electroencephalogram (EEG) of 30 AD patients,30 MCI patients and 20 normal elderly with eyes closed in rest state were recorded.In acquired EEG data,2048 points(10.14 s)of each channel were selected for LZC calculation by Matlab 7.0 software.Results (1) The average LZC values in AD,MCI and control groups were 0.396 ± 0.036,0.470 ±0.051,0.523 ±0.055 respectively.As compared with control group,the values in AD and MCI groups were decreased (F =43.092,P =0.000).(2) LZC values of AD in all channels (from 0.373 ± 0.042 to 0.430 ±0.083),whole brain,bilateral hemispheres,frontal and temporal areas were significantly lower than those in the normal group (from 0.498 ± 0.067 to 0.566 ± 0.059 ; t =3.602-8.747,P =0.000-0.010),and showed the significant decline(＞ 23％)in bilateral anterior middle temporal,frontal areas,the left parietal area.(3) Except the T6 channel,LZC values of AD groups in the remaining channels(from 0.373 ±0.042 to 0.418±0.063),the whole brain,bilateral hemispheres,frontal and temporal areas were significantly lower than those in the MCI group(from 0.455 ± 0.072 to 0.489 ± 0.063 ; in T5 channel,t =2.038,P =0.041,the others t=4.178-7.424,all P=0.000).(4) LZC values of MCI groups in the whole brain,bilateral hemispheres,temporal areas,parietal areas,the left frontal area were notably lower than those in the control group.Conclusions With the decline of the cognitive function,the EEG complexity value shows the parallel change.It suggests that the EEG complexity value can reflect the change of brain function in the duration from normal age to dementia in some degree; The MCI patients with abnormal LZC values in temporal and frontal lobes have a certain degree relation with the occurrence of AD.

To investigate the relationship between the expression of early growth response gene 1 (EGR-1) and p38MAPK pathway in the paclitaxel resistance of ovarian carcinoma cells, the effect of p38MAPK inhibitor SB203580 on cell apoptosis was examined by using Hoechst 33258 staining. The intracellular Rh123 (Rhodamine 123) accumulation was detected by the flow cytometry (FCM). The 50% inhibition concentration (IC50) of paclitaxel for A2780/Taxol cells was determined by MTT method. Electrophoretic motility shift assay (EMSA) was employed to examine the EGR-1DNA binding activity. MDR1 and EGR-1 mRNA were assessed by RT-PCR. The expressed of p-gp, phosphorylated p53 and p38 were detected by Western blotting. SB203580 could remarkably promote the apoptosis of A2780/Taxol cells, and the cell apoptosis was in a time-dependent manner. Cellular Rh123 accumulation was increased, and the IC50 of paclitaxel for A2780/Taxol cells was decreased significantly. A2780/Taxol cell line after SB203580 treatment was shown to have a significantly higher level of EGR-1 DNA binding activity. SB203580 down-regulated the activity of p38MAPK pathway, but up-regulated EGR-1 expression. SB203580 significantly increased the level of cellular phosphorylated p53 protein, but decreased the p-gp protein level and MDR1 mRNA level in A2780/Taxol cells. There existed a close relationship between p38MAPK pathway and the paclitaxel resistance of ovarian carcinoma cells. The expression of EGR-1 mediated by p38MAPK pathway plays a critical role in paclitaxel resistance of ovarian carcinoma cells.

To investigate the relationship between the expression of early growth response gene 1(EGR-1) and p38MAPK pathway in the paclitaxel resistance of ovarian carcinoma cells, the effect of p38MAPK inhibitor SB203580 on cell apoptosis was examined by using Hoechst 33258 staining.The intracellular Rh123 (Rhodamine 123) accumulation was detected by the flow cytometry (FCM).The 50% inhibition concentration (IC50) of paclitaxel for A2780/Taxol cells was determined by MTT method. Electrophoretic motility shift assay (EMSA) was employed to examine the EGR-1DNA binding activity. MDR1 and EGR-1 mRNA were assessed by RT-PCR. The expressed of p-gp, phosphorylated p53 and p38 were detected by Western blotting. SB203580 could remarkably promote the apoptosis of A2780/Taxol cells, and the cell apoptosis was in a time-dependent manner. Cellular Rh123 accumulation was increased, and the IC50 of paclitaxel for A2780/Taxol cells was decreased significantly. A2780/Taxol cell line after SB203580 treatment was shown to have a significantly higher level of EGR-1 DNA binding activity. SB203580 down-regulated the activity of p38MAPK pathway, but up-regulated EGR-1 expression. SB203580 significantly increased the level of cellular phosphorylated p53 protein, but decreased the p-gp protein level and MDR1 mRNA level in A2780/Taxol cells. There existed a close relationship between p38MAPK pathway and the paclitaxel resistance of ovarian carcinoma cells. The expression of EGR-1 mediated by p38MAPK pathway plays a critical role in paclitaxel resistance of ovarian carcinoma cells.