To study the chemical constituents of Bauhinia glauca subsp. pernervosa, eleven phenolic acids were isolated from a 95% ethanol extract by using a combination of various chromatographic techniques including column chromatography over silica gel, ODS, MCI, Sephadex LH-20, and semi-preparative HPLC. By spectroscopic techniques including 1H NMR, 13C NMR, 2D NMR, and HR-ESI-MS, these compounds were identified as isopropyl O-beta-(6'-O-galloyl)-glucopyranoside (1), ethyl O-beta-(6'-O-galloyl)-glucopyranoside (2), 3, 4, 5-trimethoxyphenyl-(6'-O-galloyl)-O-beta-D-glucopyranoside (3), 3, 4, 5-trimethoxyphenyl-beta-D-glucopyranoside (4), gallic acid (5), methyl gallate (6), ethyl gallate (7), protocatechuic acid (8), 3, 5-dimethoxy-4-hydroxybenzoic acid (9), erigeside C (10) and glucosyringic acid (11). Among them, compound 1 is a new polyhydroxyl compound; compounds 2, 10, and 11 were isolated from the genus Bauhinia for the first time, and the other compounds were isolated from the plant for the first time. Compounds 6 and 8 showed significant protein tyrosine phosphatase1B (PTP1B) inhibitory activity in vitro with the IC50 values of 72.3 and 54.1 micromol x L(-1), respectively.

Objective To evaluate the diagnostic value of two tuberculosis-specific IFN-γ release assays in latent tuberculosis infection among HIV-infected individuals. Methods The levels of tuberculosis antigen-specific IFN-γin 102 HIV patients from AIDS Outpatient Clinic of Shenzhen Third People's Hospital were detected by in-house tuberculosis-specific IFN-γ ELISpot assay and commercial T-SPOT TB kit, and tuberculin skin test (TST) were done at the same time. There were 66 males and 36 females,and the average age was 35. Results Seventeen HIV infected patients were positive in both IFN-γ ELISpot and T-SPOT TB methods, the sensitivity, specificity positive predictive value(PPV), negative predictive value(NPV) and compliance rates of ELISpot were 94. 4% ,94. 0% ,77. 3% ,98. 8% and 94. 1% ,respectively. Three patients were positive in both IFN-γELISpot and T-SPOT TB methods, the sensitivity, specificity, PPV, NPV and compliance rates of TST were 16. 7%, 98. 8%, 75.0%, 84. 7% and 84. 3%, respectively. The average number of spots using three kinds of antigen ESAT-6, Pool A,Pool B obtained were 26. 89 ±5. 77,18. 96 ±4. 75 and 14. 51 ± 3.77, respectively. Only ESAT-6 and Pool B have a statistically significant difference (H=7.557,P = 0.022 9), no significant difference was shown between other groups. There was no significant difference between the positive rate and the CD4+ T cellls number(x2 =0. 860 8 ,P =0. 650 2) ,as the same as the T-SPOT TB (x2 = 1. 396 4, P = 0. 497 5 ). Conclusions The performance of this in-house tuberculosis-specific IFN-γ ELISPot assay was comparable to T-SPOT assay in diagnosis of latent tuberculosis infection, and the sensitivity and specificity of both these two assays were all much higher than TST. They canbe recommended in diagnosing latent tuberculosis infection in HIV infected patients.

Objective To explore characteristics of sleep structure and the correlation with cognitive function in cerebral infarction combined with obstructive sleep apnea hypopnea syndrome (CI-OSAHS).Methods The patients with CI-OSAHS and OSAHS in Department of Neurology and Breathing Sleep Monitoring Room of Tianjin Medical University General Hospital from December 2009 till March 2011 were collected All the patients completed polysomography(PSG).Sixty patients were selected and divided into 3 groups based on PSG.These 3 groups were combined group 20 persons (CI-OSAHS),OSAHS group 20persons (OSAHS) and control group 20 persons (without cerebral infarction obstructive sleep apnea hypopnea syndrome).All the patients completed image examinations ( CT and MRI ) evaluation of the cognitive function by Mini-Mental State Examination(MMSE) and Montreal Cognitive Assessment(MoCA).Results Sleep structure:the awake time,non-rapid eye movement sleep (NREM) 1,NREM 2 and NREM periods in combined group and OSAHS group were significantly longer,the NREM3 + 4 and rapid eye movement(REM) periods were shorter than the control group.The NREM and NREM 1 periods in combined group were longer,the NREM 3 +4 and REM periods were shorter than the OSAHS group.The correlation analysis of cognitive function and breathing disorders and low oxygen related index:there was negative correlation between the total scores of cognitive function (MMSE and MoCA)and apnea hyponea index,oxygen desaturation index (ODI) ( MMSE r =-0.450,-0.671,MoCA r =-0.486,- 0.494,all P ＜0.05) while,was positive correlation between them and noctumal average hypoxemia and minimum hypoxemia ( MMSE r =0.477,0.485,MoCA r =0.507,0.482,all P ＜0.05) in the OSAHS group.There was negative correlation between ODI,arousal index and the total scores of MoCA in the combined group (MoCA r=-0.463,0.480,both P＜0.05),there was correlation between the total scores of MMSE and the other sleep parameters,but,there was no difference in statistics.The correlation analysis of cognitive function and sleep stages:There was positive correlation between the total scores of cognitive function ( MMSE and MoCA) and the NREM 3 + 4 periods ( r =0.521,0.474,both P ＜ 0.05 ) while,there was negative correlation between the total scores of MMSE and the N REM 1 + 2 periods (r =-0.458,P ＜ 0.05 )in the OSAHS group.There was positive correlation between the REM period and the total scores of MoCA (r =0.472,P ＜ 0.05 ).There was correlation between the total scores of MMSE and the sleep structure,but,there was no difference in statistics in combined group.Conclusions Patients with OSAHS have obvious sleep structure disorder.The awake time and light sleep periods are significantly longer than the control group,while,the deep sleep and REM periods are significantly shorter than the control group.The NREM 1 of the patients with CI-OSAHS is longer than the patients with OSAHS.The higher the AHI,the lower the night blood oxygen,the more obvious cognitive dysfunction The longer the awake time,the longer the light sleep,the shorter the deep sleep and REM periods,the more serious cognitive dysfunction.The correlation between the cognitive impairment and low oxygen is more apparent than sleep structure.There is apparent correlation among the total scores of MoCA,the degree of hypoxia and sleep structure in the patients with CI-OSAHS.The total scores of MoCA are more sensitivity than MMSE in mild vascular cognitive impairment.

Objective To investigate the effect of mild hypothermia on neuroprotection and prognosis prediction of rats with traumatic brain injury (TBI) by dynamically monitoring the somatosensory evoked potentials (SEP) and quantitative electroencephalogram (QEEG).Methods Forty healthy adult male SD rats were randomly divided into four groups according to random number table,ie,normal control group (with no intervention),sham operation group (fenestration only,without drilling),TBI group (fluid percussion was used to produce moderate to severe TBI),and mild hypothemia group (ice blanket was used immediately after TBI for continuous physical cooling and rectal temperature was maintained at 32-35℃ and rewarmed to 37℃ 6 hours after the initiation of cooling),with 10 rats per group.Changes of SEP and QEEG in all groups were monitored at 6,24 hours,and 7 days after TBI.Results (1) Compared with TBI group,the latency of SEP waves (P1 and N1) on the injured side in mild hypothemia group began to shorten at 24 hours(P ＜ 0.05) and were close to that in the sham operation group at 7 days.(2) Except for normal control group and sham operation group,QEEG in TBI group showed decrease of α rhythm,increase of reactivity slow waves,and decrease or disappearance of QEEG relative power spectral values at all time points.In mild hypothermia group,the reactivity slow waves were decreased with a small amount of α wave; QEEG relative power spectral values were increased at 24 hours and 7 days (especially at 24 hours),but werc still lower than those in normal control group (P ＜ 0.05).Conclusion Mild hypothermia exerts neuroprotective effect through reducing SEP latency,raising relative power spectral values of QEEG,and improving the nerve conduction and brain electrical activity of the injured side.

ObjectiveTo evaluate the IL-17 expression in HIV/tuberculosis-coinfected patients and its role in the pathogenesis of this coinfection.MethodsFifty-four HIV infected patients were divided into three groups:simple HIV infected group,HIV with latent tuberculosis infection (HIV+ LTBI) group and HIV coinfected with active tuberculosis (HIV+ ATB) group.The whole blood intracellular cytokine staining was performed and samples were then detected by BD FACSCanto.The expressions of CD4+ IL-17+ T cells and CD4+ IFNγ+ T cells were analyzed using FACSDiva software.Comparison between groups was done by independent sample t test.ResultsThe CD4+ T cell count and viral load among these three groups were comparable.There were no significant difference of the expression of CD4+ IL-17+ T cells between simple HIV infected group and HIV+ LTBI group (1.40 ± 1.01) ％ vs (1.29±0.86) ％,(t=0.336,P＞0.05),but both of these two groups were much higher than HIV+ATB group (t=3.680,t=2.516,P＜0.05).There were no significant differences of the expression of CD4+ IFNγ+ T cells among these three groups [(32.8±24.0)％ vs (40.3±1 21.9) ％ vs (46.1±31.2)％,(t=-0.939,t=-1.602,t=-0.646,P＞0.05)].ConclusionThe Th17 response is down-regulated in HIV/tuberculosis-coinfected patients,which may play an important antitubercular role in the pathogenesis of coinfection.

RNA interference(RNAi)is a process by which introduced small interfering RNA(siRNA)can cause the specific degradation of mRNA with identical sequences. The human herpes simplex virus type 1(HSV-1)RR is composed of two distinct homodimeric subunits encoded by UL39 and UL40, respectively. In this study, we applied siRNAs targeting the UL39 and UL40 genes of HSV-1. We showed that synthetic siRNA silenced effectively and specifically UL39 and UL40 mRNA expression and inhibited HSV-1 replication. Our work offers new possibilities for RNAi as a genetic tool for inhibition of HSV-1 replication.

Objective To discuss the correlation between levels of hs-CRP,IL-6 and MMP-9 with cerebral microbleeding (CMB).Methods A total of 201 of non-acute ischemic cerebrovascular were collected and performed heal MRI+ susceptibility-weighted imaging(SWI).The patients were divided into the CMB group(49 cases) and non-CMB group(152 cases) according to the SWI examination results.The clinical data were recorded in the two groups.The levels of inflammatory mediators high-sensitivity C-reactive protein (hs-CRP),interleukin-6 (IL-6) and matrix metalloproteinase-9(MMP-9) were tested.The Logistic regression analysis was used to analyze the relation between the levels of hs-CRP,IL-6 and MMP-9 with cerebral microbleeding.Results The levels of inflammatory mediators hs-CRP,IL-6 and MMP-9 in the CMB group were significantly higher than those in the non-CMB group (P＜0.05).The logisticMultivariate logistic regression analysis showed that the levels of hs-CRP,IL-6 and MMP-9[OR value(95％CI):1.745(1.342-2.270),1.223(1.018-1.533),1.284(1.082-1.423),P＜0.05)] were the risk factors of CMB after adjusting the influence of age,sex and traditional risk factors.Conclusion The levels of inflammatory mediators hs-CRP,IL-6 and MMP-9 are closely associated with CMB,which participate in CMB occurrence.

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 compare the differences in N-acetylaspartate/creatine(NAA/Cr), N-acetylaspartate/choline(NAA/Cho)and choline/creatine(Cho/Cr)in different brain regions of patients with different motor subtypes of Parkinson's disease(PD)or essential tremor(ET)using proton magnetic resonance spectroscopy( 1H-MRS), and to provide an imaging basis for the diagnosis of different PD subtypes and their differential diagnosis from ET. Methods:92 PD outpatients and inpatients, ET patients and healthy individuals receiving check-ups at our hospital from June 2018 to May 2021were retrospectively enrolled and divided into four groups: tremor-dominant(TD)(n=45), postural instability and gait disorders(PIGD)(n=47), ET(n=44), and healthy controls(n=40). Participant clinical information was collected and bilateral basal ganglia and cerebellar cortex 1H-MRS examinations were performed for each group.Values of NAA/Cr, NAA/Cho and Cho/Cr of the basal ganglia and the cerebellar cortex were compared between the groups. Results:NAA/Cr and NAA/Cho values in the basal ganglia were 1.65±0.19 and 1.55±0.20 for the TD group and 1.48±0.11 and 1.46±0.17 for the PIGD group, respectively, lower than in the control group(NAA/Cr: 1.92±0.28; NAA/Cho: 2.08±0.34)and the ET group(NAA/Cr: 2.10±0.16; NAA/Cho: 2.23±0.23), with statistical significance( P<0.05), whereas Cho/Cr values for the former two groups(TD: 1.07±0.25; PIGD: 1.02±0.13)were higher than in the latter two groups(control: 0.92±0.27; ET: 0.91±0.21), with statistical significance( P<0.05). NAA/Cr values of the basal ganglia in the PIGD group were lower than in the TD group( P<0.05). NAA/Cr, NAA/Cho and Cho/Cr values of the basal ganglia in the ET group were not statistically different compared with those in the control group( P>0.05). In the cerebellar cortex, NAA/Cr(0.72±0.16)and NAA/Cho(0.78±0.14)in the ET group were lower than in the control group(0.92±0.20)and(1.12±0.17), the TD group(0.90±0.14); (1.10±0.13)and the PIGD group(0.89±0.25)and(1.08±0.17)( P<0.05). NAA/Cr, NAA/Cho and Cho/Cr values of the cerebellar cortex for the TD group, the PIGD group and the control group had no statistical difference( P>0.05). Conclusions:1H-MRS can detect brain metabolic changes with damage or loss of neurons in the basal ganglia of PD patients and the cerebellar cortex of ET patients, potentially providing an objective imaging basis for early diagnosis of PD, its subtyping and the differential diagnosis from ET.

OBJECTIVETo explore the clinical effects of acupressure at Neiguan (PC 6) combined with press needles for prevention of gastroscopy-induced nausea and vomiting.

METHODSOne hundred and twenty patients who were scheduled to gastroscopy for the first time were randomly assigned into an acupressure group and a combined treatment group, 60 cases in each one.The patients in the two groups were treated with acupressure at Neiguan (PC 6) 15 min before gastroscopy; moreover, the patients in the combined treatment group were additionally treated with press needles at Neiguan (PC 6) until the end of gastroscopy. The time of gastroscopy-induced nausea and vomiting, VAS-based nausea and vomiting scale and the state-trait anxiety inventory were compared between the two groups.

RESULTSThe time of gastroscopy-induced nausea and vomiting in the combined treatment group was lower than that in the acupressure group (<0.05); the score of VAS-based nausea and vomiting scale in the combined treatment group was lower than that in the acupressure group (<0.05); the state-trait anxiety inventory was not significantly different between the two groups, before and after gastroscopy (all>0.05).

CONCLUSIONSAcupressure at Neiguan (PC 6) combined with press needles can relieve gastroscopy-induced nausea and vomiting without increasing anxiety.