Abstract: Objective　To compare the different effects of body mass index (BMI) and lean body mass index (LBMI) on the risk of all-cause death among elderly Chinese individuals. For the more scientific, accurate and convenient measurement of the elderly physique, analysis and evaluation of the health risk factors of the elderly in China. Methods　This study is based on follow-up data from 2014 to 2018, involving 5 990 participants who met the inclusion criteria in the Chinese Longitudinal Healthy Longevity Survey. Participants were grouped according to their BMI and LBMI, and both univariate and multivariate Cox proportional hazard models were established to compare the effects of BMI and LBMI on the risk of death in the elderly. According to gender, age, activities of daily living, and comorbidities, subgroup analysis was conducted to study the influence of LBMI in different subgroups. Results　The study population predominantly comprised females (52.9%, 3 167/5 990), with an average age of (84.7 ± 10.1) years, and most participants lived in rural areas (55.1%, 3 298/5 990). A majority were non-smokers (82.7%, 4 952/5 990) and non-drinkers (84.3%, 5 050/5 990). The prevalence of hypertension was 32.8% (1 966/ 5 990), diabetes 5.6% (334/5 990), and heart disease 12.9% (774/5 990). In the analysis of the impact of BMI on all-cause death in the elderly, univariate analysis showed that an increase in BMI was associated with a reduced risk of mortality. After adjusted by multiple factors (age, gender, living environment, marital status, average arterial pressure, number of children, smoking, drinking, hypertension, diabetes, heart disease, cerebrovascular disease, tumor, ADL/IADL, number of complications), compared to the normal group, the emaciated group (BMI<18.5 kg/m2) had the highest risk of death (HR=1.15,95%CI: 1.01-1.30); the overweight group (24.0 kg/m2≤BMI<28.0 kg/m2) had a lower risk of death (HR=0.78, 95%CI: 0.67-0.91). In the analysis of the impact of LBMI on the risk of death in the elderly, compared to moderate LBMI, lower LBMI was associated with a higher risk of death. Multivariate analysis showed that compared with moderate LBMI, a decrease in LBMI increased the risk of death, whereas an increase in LBMI did not show statistically significant differences in mortality risk in the elderly. Conclusion　In measuring fitness and quality of life in the elderly, LBMI has better representativeness and practical value.

OBJECTIVE:To optimize the preparation technology of Compound bovis calculus sativus gel. METHODS:The ul-trasonic emulsifying technology was optimized by orthogonal test using ultrasonic power,ratio of ultrasonic time to interval time, total ultrasonic time as factors,using centrifugal stability constant(KE)as index.Ultrasonic emulsifying method was applied to pre-pare O/W emulsions using paeonol,berberine hydrochloride and eucalyptus oil;then calculus bovis sativus powder was added into O/W emulsions,and then mixed with carbomer(940)gel matrix to prepare gel. The formulation of gel was optimized by orthogo-nal test with the amount of carbomer (940),glycerool and triethanolamine as factors,using compactibility score,comprehensive score of release rate in vitro as index. Validation test,stability test and content determination of bilirubin were conducted for gel pre-pared by optimized technology. RESULTS:The optimal ultrasonic emulsifying technology was as follows as ultrasonic power 450 W,ratio of ultrasonic time to interval time 2:1,and total ultrasonic time 5 min. The optimal formulation of gel was as follows as carbomer(940)0.5%,glycerool 15%,triethanolamine 0.20%(g/100 g). The average of KE of validation test and average compre-hensive score were 0.175 and 98.67(RSD<2%,n=3);the appearance of the preparation had no obvious change in stability test, and average percentage of bilirubin in labeled content was 100.8%. CONCLUSIONS:The optimal formulation and preparation tech-nology of gel is feasible,and the prepared gel is stable and controllable in quality.

Objective To study the prevalence and variation of influenza B viruses of Shenzhen. Methods Fifty strains influenza B viruses in Shenzhen from 1994 to 2006 were selected. HA1 gene were amplified by RT-PCR and sequenced. Phylogenetic analysis of HA1 was conducted by MEGA program. Results The influenza B viruses of Shenzhen were divided into Yamagata and Victoria lineage. The two lineages prevailed respectively in different years from 1994 to 2006. The variance of glycosylation site and some mutations of antigenic determinants were detected in the two lineages. Conclusion The viruses of Yamagata and Victoria lineage prevailed respectively in different years in Shenzhen but the mutation rates of the two lineages were slowly.

The cytolytic effect of perforin is a mechanism of anti-virus,killing microbial-infected cells and tumor cells.Perforin is a very important non-specific immune factors in fish.In order to understand the function of perforin,the cDNA of grass carp perforin C-terminal peptide was amplified from grass carp liver and kidney cDNA library.It contains a protein kinase C conserved region 2(C2).The cDNA was connected with pET32a,and transformed to expression bacteria DE3.PFP-C was expressed by a prokaryotic expression system and then purified by affinity chromatography.It showed a significant haemolytic activity when tested with rabbit red cells,the optimal pH for haemolytic activity was 7.5,and its haemolytic function dependents on Ca2+ apparently.

The diethyl sulfate (DES) mutagenesis was chosen for the mutagenic treatment to Phellinus igniarius, and the relationship of mutagenesis time and death rate was investigated with 0.5% DES. The differences of mycelial growth speed, liquid fermentation mycelia biomass, morphology and pigment classes of secondary metabolites production speed and antioxidant activities of metabolite products were discussed. The study displayed that DES mutagenesis could change mycelial morphology without obvious effect on mycelium growth, and the DES mutagenesis improved antioxidant activities of the active ingredients of P. igniarius and had more antioxidant activity of hypoxia/sugar PC12 nerve cells than that of P. igniarius.
Basidiomycota ; drug effects ; genetics ; growth & development ; metabolism ; Mutagenesis ; Mutagens ; pharmacology ; Mycelium ; drug effects ; genetics ; growth & development ; metabolism ; Pigments, Biological ; analysis ; metabolism ; Secondary Metabolism ; drug effects ; Sulfuric Acid Esters ; pharmacology

OBJECTIVETo evaluate the erectile and ejaculatory function of sacral tumor patients after sacral nerve root resection and investigate the relationship of erectile and ejaculatory dysfunction (EED) with the level of sacral nerve injury.

METHODSThis retrospective study included 47 male patients aged 16 to 63 (32.6 +/- 6.8) years treated by sacral tumor resection between January 2008 and August 2013. According to the levels of the sacral nerve roots spared in surgery, the patients were divided into four groups: bilateral S1-S3 (n=16), unilateral S1-S3 (n=21), unilateral S1-S2 (n=6), and unilateral S1 (n=4). The patients were followed up for 12 to 41 (27.2 +/- 10.9) months by questionnaire investigation, clinic review, and telephone calls about their erectile and ejaculatory function at 3, 6 and 12 months after surgery and in August 2013.

RESULTSIn the bilateral S1-S3 group, the incidence rates of EED were 31.25% (5/16), 25% (4/16), and 12.5% (2/16) at 3, 6, and 12 months respectively after surgery, with recovery of erectile and ejaculatory function in August 2013. The incidence rates of EED in the unilateral S1-S3 group were 85.71% (18/21), 71.43% (15/21), 52.38% (11/21), and 42.86% (9/21) at 3, 6 and 12 months and in August 2013, respectively; those in the unilateral S1-S2 group were 100% (6/6), 83.33% (5/6), 83.33% (5/6), and 66.67% (4/6) at the four time points; and those in the unilateral S1 group were all 100% (4/4). No statistically significant differences were found in the incidence rate of EED among the patients of different ages or tumor types (P > 0.05).

CONCLUSIONThe incidence of postoperative EED in male patients treated by sacral tumor resection is closely related to the mode of operation. Sparing the S3 nerve root at least unilaterally in sacral tumor resection is essential for protecting the erectile and ejaculatory function of the patient.

Adolescent ; Adult ; Ejaculation ; physiology ; Erectile Dysfunction ; epidemiology ; etiology ; Female ; Humans ; Incidence ; Male ; Middle Aged ; Organ Sparing Treatments ; Peripheral Nervous System Neoplasms ; surgery ; Postoperative Complications ; epidemiology ; Postoperative Period ; Retrospective Studies ; Sacrum ; Spinal Nerve Roots ; injuries ; surgery ; Surveys and Questionnaires ; Young Adult

Objective To clarify the intravenous thrombolysis utilization of acute ischemic stroke patients in Huashan hospital,and to analyze the factors affecting thrombolytic therapy compliance.Methods The data from a prospective cohort were analyzed.Consecutive acute stroke and transient ischemic attack patients from Huashan Hospital emergency room were recruited in 2014.Eligible ischemic stroke patients were divided into two groups according to intravenous thrombolysis or not.Results Totally 220 patients from emergency room were assessed in 2014.Among eligible patients,43 patients refused intravenous thrombolysis,whereas 59 patients chose this therapy.After multiple analysis,age,baseline NIHSS score,limb weakness,hemiplegic paralysis,facial paralysis or speech symptoms were significantly different between the two groups (U =936.000,P =0.024;U =284.500,P ＜ 0.01;x2 =8.824,P =0.003;x2 =7.732,P=0.005;x2 =5.169,P=0.038;x2 =5.040,P=0.025).Patients with NIHSS score ＜7 tended to refuse thrombolysis therapy in the receiver operating characteristic curve analysis (sensitivity 0.93,specificity 0.71).From 2008 to 2014,244 cases were analyzed in the thrombolysis database.Compared with patients with higher baseline NIHSS score,intracranial hemorrhage rate (2.6％ vs 19.4％;x2 =12.466,P ＜0.01),7-day mortality rate (1.3％ vs 16.9％;x2 =12.308,P ＜0.01) and 3-month mortality rate (3.8％ vs 21.1％;x2 =11.993,P ＜0.01) were lower in patients whose baseline NIHSS score ＜ 7 (minor group).A higher rate of excellent outcome (3-month modified Rankin Scale score ≤ 1)was observed in minor group (78.2％ vs 38.0％;x2 =34.403,P ＜ 0.01).Conclusions Intravenous thrombolysis was performed in 54.6％ of eligible ischemic stroke patients.Age,baseline NIHSS score,limb weakness,hemiplegic paralysis,facial paralysis or speech symptoms were associated with patients' decision of thrombolysis.The effectiveness and safety of intravenous thrombolysis were promising for patients with mild stroke.

Objective To evaluate maximum intensity projection(MIP) images and apparent diffusion coefficient(ADC) values of MR diffusion weighted imaging with background body signal suppression (DWIBS) on pulmonary diseases.Methods Sixty-one patients with pulmonary diseases underwent DWIBS.The findings in three dimensional(3D) MIP image were observed and the ADC values of diseased region were measured.The diagnostic value of DWIBS on pulmonary diseases was evaluated.Results Lung cancer and inflammatory disease were all demonstrated as dense intensity area on DWIBS.The mean ADC value of central lung cancer was (1.05±0.23)×10-3 mm2/s.The mean ADC value of peripheral lung cancer was(1.10±0.17)×10-3 mm2/s.The mean ADC value of the inflammatory disease was(1.69±0.29)×10-3 mm2/s.The mean ADC value had significant difierence between peripheral lung cancer and the inflammatory disease (P＜0.05). The MR sensitivity,specificity and accuracy in diagnosing the pulmonary diseases with DWIBS(86.84%,82.60%,85.24%,respectively) was higher than conventional MRI(78.94%,78.26%,and 78.68%,respectively).Conclusion DWIBS can demonstrate clearly the lesion's shape with 3D display.The quantitative measurement of ADC values iS feasible.DWIBS may be a potential diagnostic method for differentiation on pulmonary diseases.

Objective To analyze neuraminidase(NA) inhibitor resistance of seasonal H1N1 influenza A viruses isolated in Shenzhen during 2008 to 2009. Methods The NA gene of these viruses were sequenced. Phylogenetic analysis of the sequences was performed with Mega3. 1 software. Results In 2008, most isolates of the seasonal H1 N1 virus were susceptible to neuraminidase inhibitors, but the H275Y mutation in the neuraminidase gene region associated with high-level oseltamivir resistance had been detected in 92.6% of the strains isolated in 2009. Furthermore, a strain with Q136K was found, which showed the resistance to Zanamivir. Conclusion In the light of emerging resistance, close monitoring and understanding of the nature and dynamics of resistance mutations in influenza virus should be a priority.

Objective To evaluate the effect of TGF-β1 and IL-1β expression in serum on acute radiation-induced heart disease (RIHD) in patients with thoracic tumors.Methods Three-dimensional conformal radiotherapy (3D-CRT) or intensity modulated radiotherapy (IMRT) was delivered at 1.8-2.0 Gy,5 times per week to a total dose of 50-66 Gy to 44 patients with lung cancer and 10 patients with esophagus cancer.The target and organs at risk dose distribution were analyzed by 3-dimensiond treatment planning system.The expressions of TGF-β1 and IL-1β in serum were detected by enzyme linked immunosorbent assay before and at the end of the irradiation.The cardiac injury was evaluated by detecting the cmyocardium creatase,cardiac troponin I (cTnI),electrocardiogram and cardiac function before and at the end of the irradiation within 90 d.The acute RIHD was evaluated by the Common Terminology Criteria V 3.0 (NCI-CTCAE 3.0).The expressions of TGF-β1 and IL-1β in the serum of RIHD patients with thoracic tumors were analyzed.Results The expression of TGF-β1 in serum was (888.4 ± 41.1) μg/L before the irradiation and approached to (926.1 ± 23.1) μg/L at the end of the radiotherapy.The expression level of TGF-β1 in the serum of acute RIDH group was (900.6 ± 34.5) μg/L,higher than that of normal group [(865.7 ±47.0) μg/L,t =-2.646,P ＜0.05)].The acute RIDH was correlated with the expression level of TGF-β1 before irradiation and the difference before and at the end of irradiation (r =0.378,0.311,P ＜0.05).The IL-1β expression had no significant difference before and after irradiation.The expression of TGF-β1 in serum before and at the end of irradiation had positive correlation with the expression of IL-1β at the end of the irradiation (r =0.416,0.389,P ＜ 0.05).Conclusions The expression of TGF-β1 in the serum of patients with thoracic tumor increases after irradiation and correlated with the acute RIHD,but the expression of IL-1β in serum has no relationship with RIHD.TGF-β1 could induce the expression of IL-1β at the end of the irradiation.