Objective To explore the optimal techniques in separation of phenols from Melastoma dodecandrum with macroporous resins.Methods Static and dynamic adsorption-desorption methods were adopted,and the concentration of phenols was measured by UV spectrophotometer to evaluate the separa-ting efficiency.Results The HPD 100 macroporous resin was found with the best separating efficiency,by which the content of phenols could reach more than 50 percent in the extraction.The optimum technique condition was 0.2 g/mL concentration of crude drug,pH value was 2.7—4.5,adsorption in 3 BV/h,delution by 5 BV,60% alcohol in 3 BV/h.Conclusion This method is simple and feasible with good efficiency of separation,which could also meet the industrial requirements.

OBJECTIVE To investigate the etiology of acute respiratory tract infection(ARI)in Hefei area and risk factors that may influence the distribution of common pathogens.METHODS Direct immunofluorescence assay was applied to detect the respiratory syncytial virus(RSV),adenovirus(ADV),influenza virus A(FluA),influenza virus B(FluB),parainfluenza virus PIV(1,2,3)and real time fluorescent quantitation polymerase chain reaction (FQ-PCR)was applied to measuring Mycoplasma pneumoniae(MP)and Chlamydia pneumoniae(CP)in nasopharyngeal secretions and sputum specimens.RESULTS Among 530 cases included in this study,421 cases (79.43%)showed positive viral etiology.ADV accounted for 73(13.77%),FluA-68(12.83%),FluB-56 (10.56%),RSV-48(9.05%),PIVl-47(8.86%),PIV3-42(7.92%),PIV2-33(6.22%),MP-32(6.03%)and CP-22(4.15%).The detected positive rate of pathogens isolated in winter was the highest(85.07%).CONCLUSIONS Acute upper respiratory tract infection(AURTI)is common and more than 75%pathogens in Hefei area are virus in which the most commonly virus is ADV.Meanwhile atypical pathogens of infection should not be ignored.

Objective To evaluate the diagnostic value of sympathetic skin response(SSR)in patients with vestibular vertigo.Methods SSR tests were performed on 1 20 patients with acute vestibular system vertigo,including 70 cases of central vertigo and 50 eases of peripherM vertigo.60 healthy subjects were also examined to serve as controls.Results In those with central vertigo,the abnormality rate in the SSR results was 87.1%(61/70).SSR latency was longer and its amplitude wag lower than in those with peripheral vertigo and in the heMthy controls.In those with peripheral vertigo the abnormality rate was 18.0%(9/50),but the average latency and amplitude were not significantly different from those of the healthy controls.Conclusion Persons with acute central vestibular vertigo may have sympathetic nerve dysfunction.SSR test results can be used as an electrophysiological index to distinguish central from peripheral vestibular vertigo.

Objective To prospectively explore the impact of hypocalcemia on the prognostic value of intracerebral hemorrhage.Methods A total of 410 patients consecutively admitted within 12 hours after intracerebral hemorrhage onset were divided into 3 groups based on admission serum calcium:low serum calcium group,normal serum calcium group and high serum calcium group.Baseline characteristics of patients including age,gender,Glasgow coma score(GCS),hematoma volume,etc were collected and analyzed.A follow-up was performed after 6 months.Final outcome was assessed using Glasgow outcome scale(GOS)with a score＞3 regarded as favourable prognosis,a score≤3 as unfavourable prognosis.Results Patients with low serum calcium had lower GOS,bigger hematoma volume,higher rate of operation,higher re-bleeding rate,more unfavourable prognosis than did the other 2 serum calcium groups.Multivariable Logistic regression analysis showed that patients with low serum calcium had poorer prognosis than patients with normal serum calcium after adjusting for other potential confounders(Odds ratio:3.01,95％ confidence interval:1.06-6.12,P＜0.05).Conclusions Hypocalcemia is an independent risk factor for the prognosis of patients with intracerebral hemorrhage.

Objective To analyze the clinical features of Parkinson's disease (PD) combined with chronic pain in the elderly.Methods A total of 366 idiopathic PD patients experiencing pain were enrolled and divided into two groups:the elderly group (n=289) and the young group (n=77).Rating scales including Visual Analogue Scale (VAS),Unified Parkinson's Disease Rating Scale (UPDRS),Hoehn Yahr (H-Y) Scale,Self-rating Anxiety Scale (SAS),Self rating Depression Scale (SDS) and Brief Pain Inventory (BPI) were evaluated.Results Compared with the young group,the elderly group had evidently higher scores of UPDRSⅡ,Ⅱ,Ⅳ,H-Y Scale,VAS as well as five sub-items of BPI including daily living,working,sleeping,walking ability and social communication [(13.7±5.3) vs.(12.3±6.3),(27.3±12.9)vs.(23.3±9.6),(2.3±2.2)vs.(1.7±1.3),(2.4± 1.0)vs.(2.1±0.9),(63.3±25.6)vs.(56.6±25.0),(5.3±2.7)vs.(4.6±2.7),(5.9±3.2)vs.(5.1±2.8),(6.3±2.5)vs.(5.6±2.6),(4.7±3.1)vs.(3.8±2.0),(3.2±2.1)vs.(2.6±2.5),t=1.976,2.539,2.287,2.381,2.050,2.021,1.997,2.165,2.420,2.134,respectively,all P＜0.05].No significant differences were found in SAS,SDS or other sub-items of BPI such as life pleasure and mood scores between the two groups (all P＞0.05).Compared with the young group,patients in the elderly group had a higher ratio of two or more pain types associated with PD[41.2％ (119/299)vs.23.4％ (18/77),x2=8.190,P＜0.05],but a lower ratio of pain-related treatment [29.76％ (86/299)vs.51.95％ (40/77),x2=13.260,P＜0.05].Conclusions Pain in elderlyPD patients is more severe,shows more diverse types,and significantly aftects the quality of life.Enhanced intervention is needed.

Objective:To analyze the expression of LETM2 in KYSE150 and ECA109 cell lines and its effect on the proliferation, migra-tion, and invasion of esophageal squamous cell carcinoma (ESCC). Methods:The expression level of the LETM2 protein in 90 paired hu-man ESCC tissues and matched adjacent normal tissues was determined through immunohistochemistry. The expression level of LETM2 in ESCC cell lines was detected by real-time PCR and Western blot. The expression levels of LETM2 in KYSE150 and ECA109 cell lines were knocked down using lentivirus. MTT assays were performed to examine the effect of LETM2 on the proliferation of ESCC cells. Colony formation assay was used to detect the colony formation ability. Flow cytometry was performed to analyze the cell cycle. The effect of LETM2 depletion on the migration and invasion of ESCC cells was determined by Transwell assay. Results:LETM2 expres-sion was frequently upregulated in the ESCC tissues than in the adjacent normal tissues. The suppressed exogenous expression of LETM2 led to the inhibition of cell proliferation and colony formation. However, cell migration and invasion were not affected. The re-sults on the cell cycle distribution revealed that LETM2 knockdown acts as a negative regulator of the cell cycle at the G1 to S phase transition. Conclusion:LETM2 acts as a tumor-driven gene in the development and progression of ESCC. This finding suggests that LETM2 can be used as an efficient prognosis biomarker and a potential therapeutic target for ESCC.

BACKGROUNDTo evaluate the diagnostic value of flow cytometric DNA analysis of sputum cells in lung cancer patients.

METHODSThe DNA content of sputum cells was determined by flow cytometry in 44 patients (29 patients with lung cancer, and 15 patients with benign pulmonary disease). The results of DNA content of sputum cells were compared with those of cytologic morphology of sputum cells.

RESULTSThe last pathologic diagnosis was used as a diagnostic criterion, the sensitivity of DNA heteroploidy analysis was 82.8% , which was significantly higher than that of sputum cytology (82.8% vs 27.6%, P < 0.005); and the positive rate of heteroploidy in sputum samples in stage III and IV disease was significantly higher than that in stage I and II disease (87.5% to 76.9%, P < 0.002 5). In one case, the heteroploidy was found 10 months in advance of cytometry. In the control, heteroploidy was detected in 33.3% (2/6) patients with inflammatory pseudotumor and 50.0% (2/4) patients with tuberculous nodule, who were found with positive staining of Ki67 and PCNA.

CONCLUSIONSFlow cytometry seems to be a valuable adjunctive method for the diagnosis of lung cancer, and probably for the early diagnosis.There are clonal changes in some inflammatory pseudotumor and tuberculous nodule.

Objective:To investigate the effect of early gradual diet on reducing delirium in elderly patients with hip arthroplasty.Methods:From January 2018 to January 2020, 74 cases of hip arthroplasty patients aged over 65 years old who were treated in the Third Affiliated Hospital of Sun Yat-sen University were selected as the observation objects. They were randomly divided into experimental group and control group with 37 cases in each group. The experimental group was given early gradual diet on the basis of routine postoperative care, while the control group was given routine postoperative diet on the basis of routine postoperative care. The incidence of postoperative delirium, Pittsburgh Sleep Quality Index (PSQI), patient satisfaction rate, average hospitalization days and average hospitalization expenses were used to evaluate the effect of early gradual diet on reducing delirium in elderly patients with hip arthroplasty.Results:The incidence of delirium in the experimental group was 2.70% (1/37) and 16.22% (6/37) in the control group, the difference was statistically significant ( χ2 value was 3.945, P<0.05); the hospitalization days of the experimental group were (10.68±5.13) d, (13.62±7.19) d in the control group. The difference of hospitalization days was statistically significant ( t value was 2.877, P<0.01). The incidence of difficulty in falling asleep and the satisfaction rate of the experimental group were 8.11% (3/37) and 94.59% (35/37) respectively, and those in the control group were 29.73% (11/37) and 78.38% (29/37) respectively, and the differences were statistically significant ( χ2 value was 5.638, 4.163, P<0.05). Conclusions:Early gradual diet after operation can reduce the incidence of delirium in elderly patients with hip arthroplasty, shorten the average hospitalization days, reduce the incidence of difficulty in falling asleep, improve patients' satisfaction, and help patients to pass through the perioperative period more safely and comfortably.

Objective To investigate the changes in cognitive function in patients with early Parkinson's disease (PD) in a 5-year follow-up.Methods A total of 181 PD and 173 normal participants were recruited between January 2009 and January 2012 at the Department of Neurology,the Second Hospital of Jiaxing City.Regression analysis was used to evaluate the risk factors of cognitive impairment,and changes in subdomains of the Montreal Cognitive Assessment (MoCA) were compared annually with baseline data.Results Baseline clinical data were similar between the two groups.The level of cognitive impairment was positively correlated to the age of onset and the Hamilton Anxiety Scale (H AMD) (t =3.326,P＜ 0.05;t =5.211,P＜0.01),and negatively correlated to education level (t=-2.505,P＜0.05).There were no statistical differences in the first (26.5 ± 2.6),second (26.3±3.2) and third year (25.9±2.9) in the total scores of MoCA,which significantly increased in the forth (24.4 ± 2.3,P＜0.05) and fifth (24.1 ± 1.2,P＜0.05) year compared with baseline levels (26.7±2.9).However,in the control group,differences between any two years in total scores were not statistically significant (all P＞0.05).Seven subdomains of MoCA were attenuated,and four of them were significant different between the groups,including delayed recall,attention,abstraction task and orientation after the forth year of follow-up (all P ＜ 0.05).Meanwhile,visuospatial execution capacity was attenuated before the third year,and then rose markedly (P＜0.05).In the control group,the between-year differences of seven subdomains were not statistically significant (all P＞0.05).Conclusions Cognitive function of PD patients decreases significantly in some domains,such as delayed recall,attention,abstraction task and orientation after a five-year followup.

Objective To explore the the characteristics of non-motor symptoms of essential tremor(ET).Methods Totally 50 ET patients and 45 age-gender-matched healthy volunteers,admitted in Department of Neurology,The Second Affiliated Hospital of Zhejiang University School of Medicine from May 2015 to April 2016,were included.Clinical data and tremor analyses under different postures were obtained.The non-motor symptoms were evaluated using the Pittsburgh Sleep Quality Index(PSQI),Hamilton anxiety scale(HAMA),Hamilton's Depression Scale(HAMD),and the MOS item short from health survey (SF-36).Cognitive functions were evaluated by the Minimental state examination(MMSE).Results ET group had lower MMSE total score of (25.81 ±2.75 vs.28.16 ± 1.71),increased rate of dyssomnia (62.0％ vs.15.6％) and higher PQSI score (6.42±2.71 vs.3.84±2.13)compared with the control group(all P＜0.05).Moreover,more patients in the ET group had moderate and severe anxiety(60.0 ％ vs.37.8 ％),moderate and severe depression (34.0％ vs.15.6％)than the control group(both P ＜ 0.05).Anxiety and depression had effects on physical and mental health and were also related to the quality of life.Conclusions Non-motor symptoms,such as mild cognitive deficits,depression,anxiety and dyssomnia are common in ET patients.Furthermore,depression and anxiety have negative effects on physical and mental health.