A 39-year-old man presented with recurrent lower back and leg pain for 8 months due to repeated hemorrhage into an L5 ligamentum flavum cyst. Lumbar MR imaging showed an extradural cystic mass originating from the ligamentum flavum on the right side in the L5 segment. Microsurgical laminotomy and flavectomy were performed. The symptoms resolved completely and the patient had an uneventful postoperative recovery.
Adult ; Cysts ; diagnosis ; surgery ; Humans ; Ligamentum Flavum ; pathology ; surgery ; Male

Objective　To investigate the role of suramin in inhibiting the angiogenesis of lung cancer. Methods　The protei n expression of VEGF and its receptor fms-like tyrosine kinase(Flt), kinase ins ert domain-containing receptor(KDR) in lung cancer cell A549 and ECV-304 was studied with immunohistochemical technique. The anti-angiogenesis effect of su ramin was evaluated with immunohistochemical technique and cell culture. Results　Suramin showed no effect on the production of lung cancer cel ls and their secretion of VEGF. No possitive expression of Flt, KDR in A549 was found in the suramin interfered group and non-interfered group, but VEGF w as e xpressed in both groups. The Flt and KDR expressions in ECV-304 cells were decr eased significantly after the treatment of suramin at 0.25 ng/ml and 2.5 ng/ml r espectively. There was no effect on proliferetion of A549 and ECV-304 after sur amin in terference. Conclusion　The mechanism of inhibiting-angiogenes is of suramin is pro bably due to reducing the VEGF receptor expression in vascular endothelial cells and inhibiting the binding of VEGF and its receptors.

Objective To investigate the effect of bevacizumab combined with chemotherapy on the expression of EGFR and HER in the patients with metastatic colorectal cancer .Methods Sixty patients with metastatic colorectal cancer treated in this hos-pital from January 2013 to October 2016 were selected and randomly divided into the experiment group (bevacizumab combined with FOLFOX-6 chemotherapy regimen) and control group (FOLFOX-6 chemotherapy regimen) 30 cases in each group .The curative effects were observed in the two groups .The levels of serum HER and EGFR were detected by enzyme-linked immunosorbent assay (ELISA) .Results The total effective rate after treatment in the experiment group was 53 .33% ,which in the control group was 33 .33% ,the difference was statistically significant (P< 0 .05) .After treatment ,the levels of serum HER and EGHR in the two groups were decreased to some extent ,moreover the experiment group had more decrease than the control group ,the difference be-tween the two groups was statistically significant (P<0 .05) .The occurrence rate of adverse reactions had no statistical difference between the two groups (P>0 .05) .Conclusion Bevacizumab combined with chemotherapy has good effect in the patients with metastatic colorectal cancer .

Objective: To investigate the frailty status and related determinants among the elderly in China. Methods: Frailty index (FI) was applied to evaluate the frailty status of the elderly. Data used in this study was from the China Health and Retirement Longitudinal Study (CHARLS) in 2011-2015. Binary logistic regression analysis was carried out to identify the determinants related to the status on frailty. Results: The prevalence rates of frailty in the elderly were 18.7%, 20.6% and 28.4% in 2011, 2013 and 2015, respectively. Being female or elderly under advanced age, were both associated with the higher level of FI. Factors as hip fracture, falls, alcohol intake more than once a month, and less participation in social activities etc., might serve as the risk factors for frailty. Conclusion: Chinese elderly showed relatively high prevalence on frailty and with annual increasing trend. The status of frailty was related to factors as adverse events and unhealthy lifestyles. Comprehensive intervention strategies should be adopted in early life of the elderly to delay the development process of frailty.
Accidental Falls ; Aged ; Alcohol Drinking ; China/epidemiology* ; Female ; Frail Elderly ; Frailty/ethnology* ; Hip Fractures ; Humans ; Longitudinal Studies

Objective: To understand the circulation, drug resistance and molecular characteristics of Salmonella1, 4, [5], 12: i:- in human in Guangdong province. Methods:Salmonella1, 4, [5], 12: i:- isolated from diarrhea patients in Guangdong during 2007-2016 were detected for drug resistance, genes and PFGE characteristics. Results: A total of 2 960 strains Salmonella1, 4, [5], 12: i: - were isolated from human diarrhea cases during this period. The positive rates of the isolation increased year by year. The male to female ratio of the infection cases was 1.58∶1, and the infection mainly occurred in infants and young children. Except imipenem, Salmonella1, 4, [5], 12: i: - was resistant to other 17 antibiotics to some extent. The drug resistant rates to ceftazidime, cefotaxime and ciprofloxacin increased from 2011 to 2016. Multi-drug resistance was serious, for example, the multi-drug resistant strains with ASSuT accounted for 70.62% (435/616) and the multi-drug resistant strains with ACSuGSTTm accounted for 27.11% (167/616). The lack of fljA, fljB and hin genes, as well as the retaining of iroB, STM2740, STM2757 genes, resulted in the unable expression of FljBenx gene with 8 different defection profiles. There were 934 different PFGE patterns observed in 2 347 strains, which displayed a relatively large fingerprint polymorphism. The major PFGE pattern was JPXX01. GD0226, which was found in 97 strains, accounting for 4.13% (97/2 347). The PFGE patterns in 168 Salmonella1, 4, [5], 12: i: - strains were consistent with that of Salmonella typhimurium. Conclusions:Salmonella1,4,[5], 12: i: - strains has become the major serotype of Salmonella that cause diarrhea in human in Guangdong. The multi-drug resistance of Salmonella1,4, [5], 12: i: - was serious, and since the defection of fljA, fljB and hin genes, the expression of FljBenx protein failed. The PFGE results were diverse, which displayed polymorphism in inheritance.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Anti-Bacterial Agents/pharmacology* ; Child ; Child, Preschool ; China/epidemiology* ; Diarrhea/microbiology* ; Drug Resistance, Bacterial ; Electrophoresis, Gel, Pulsed-Field ; Female ; Humans ; Infant ; Male ; Microbial Sensitivity Tests ; Middle Aged ; Salmonella Infections/prevention & control* ; Salmonella enterica/isolation & purification* ; Salmonella typhimurium ; Serogroup ; Serotyping ; Young Adult

Objective: To analyze the epidemiological characteristics of hand foot and mouth disease (HFMD) cases caused by Coxsackie virus A16 (Cox A16) in Guangdong province from 2012 to 2016. Methods: The data of mild HFMD cases caused by Cox A16 were collected from 8 sentinel hospitals in 8 prefecture-level cities in Guangdong to estimate Cox A16 infection status and its population and time distribution characteristics. Results: (1) The highest estimated incidence of Cox A16 infection was in 2014 (113.0/100 000), followed by 2016 (86.4/100 000) and 2012 (79.1/100 000), while the estimated incidence was lower in 2015 (29.0/100 000) and 2013 (28.8/100 000). (2) Cox A16 was confirmed to be the predominant pathogen causing HFMD outbreaks (54.6%, 89/163). The number of outbreaks in the year with high incidence (28 outbreaks) was 11.2 times higher than that in the year with low incidence (2.5 outbreaks). (3) Across all age groups, the annual estimated incidence of Cox A16 infection decreased with age (trend χ(2)=853 905.63, P<0.01). The incidence was highest in age group 1 year (1 449.2/100 000), followed by that in age group 3 years (1 097.0/100 000), in age group 2 years (1 083.5/100 000), in age group 4 years (687.8/100 000) and in age group 0 year (604.9/100 000). Among the age groups <12 months, the estimated incidence increased with age (trend χ(2)=5 541.77, P<0.01), which was highest in age group 11-months (2 105.1/100 000), followed by that in age groups 10-months (1 448.6/100 000), 9-months (938.3/100 000), 8-months (703.3/100 000) and 6-months (664.6/100 000). (4) The annual incidence peak was during May (143.9/100 000)-June (131.5/100 000). Conclusion: The prevalence of Cox A16 infection differed with year in Guangdong during 2012-2016. When the incidence of Cox A16 infection was high, more outbreaks occurred. The prevalence occurred mainly in nurseries and kindergartens from May to June each year. Children aged 0-4 years were the high risk group for Cox A16 infection, children aged 6-11 months were at high risk for Cox A16 infection.
Animals ; Child ; Child, Preschool ; China/epidemiology* ; Cities ; Coxsackievirus Infections/epidemiology* ; Disease Outbreaks ; Enterovirus A, Human/isolation & purification* ; Hand, Foot and Mouth Disease/epidemiology* ; Hospitals ; Humans ; Incidence ; Infant ; Schools

OBJECTIVETo investigate the antioxidant and cytotoxic properties of five diarylheptanoids (1-5) isolated from the rhizomes of Zingiber officinale.

METHODVarious models such as scavenging superoxide anions and 1,1-diphenyl-2- picrylhydrazyl (DPPH) radicals, inhibiting lipid peroxidation, as well as protecting of rat pheochromocytoma (PC12) cells induced by hydrogen peroxide (H2O2) were employed to assay the antioxidative effects of the diarylheptanoids. The cytotoxicities of compounds 1-5 were measured with MTT assays.

RESULTThe test compounds (1-5) showed promising DPPH inhibitory activities, and compound 5 exhibited the strongest DPPH scavenging activity with an IC50 value of (22.6+/-2.4) micromol x L(-1). Compounds 1, 3 and 4 showed potential anti-peroxidative effects with inhibitory rates of (66.3+/-15.4)%, (68.7+/-15.8)% and (72.2+/-10.6)%, respectively, at 100 microg x mL(-1). It could be observed that compounds 1, 3 and 4 demonstrated significant neuroprotective activities in a dose-dependent manner. Moreover, compound 3 exhibited certain cytotoxicities against human chronic myelogenous leukemia cells (K562) and its adriamycin-resistant cells (K562/ADR) with IC50 values of (34.9+/-0.6), (50.6+/-23.5) micromol x L(-1), respectively.

CONCLUSIONIn vitro results demonstrated that five diarylheptanoids (1-5) isolated from the roots of Z. officinale were capable of scavenging radicals, inhibiting lipid peroxidation and protecting PC12 cells against the insult by H2O2. Additionally, compound 3 could inhibit the growth of K562 and K562/ADR cells.

Animals ; Antioxidants ; toxicity ; Cell Proliferation ; drug effects ; Cytotoxins ; toxicity ; Diarylheptanoids ; isolation & purification ; metabolism ; toxicity ; Free Radicals ; metabolism ; Ginger ; chemistry ; Humans ; Hydrogen Peroxide ; metabolism ; K562 Cells ; Oils, Volatile ; pharmacology ; PC12 Cells ; Rats ; Rats, Sprague-Dawley

In the studies of modern epidemiology, exposure in a short term cannot fully elaborate the mechanism of the development of diseases or health-related events. Thus, lights have been shed on to life course epidemiology, which studies the exposures in early life time and their effects related to the development of chronic diseases. When exploring the mechanism leading from one exposure to an outcome and its effects through other factors, due to the existence of time-variant effects, conventional statistic methods could not meet the needs of etiological analysis in life course epidemiology. This paper summarizes the dynamic path analysis model, including the model structure and significance, and its application in life course epidemiology. Meanwhile, the procedure of data processing and etiology analyzing were introduced. In conclusion, dynamic path analysis is a useful tool which can be used to better elucidate the mechanisms that underlie the etiology of chronic diseases.
Chronic Disease/epidemiology* ; Epidemiologic Studies ; Humans ; Models, Theoretical ; Risk Factors ; Time

Being an undisputed risk factor of cancer, air pollution is posing a huge threat to the health on human beings. In this article, we introduced the composition of air pollution, and the standards on air quality which was set by both World Health Organization and the Chinese government. We also summarized the most recent research findings on the association between air pollution and the risk of lung, breast, bladder and other major cancers.
Air Pollutants/toxicity* ; Air Pollution/adverse effects* ; Humans ; Neoplasms/epidemiology* ; Prevalence ; Research/trends* ; Risk Factors

Objective: To study the willingness and influence factors related to "centralized slaughtering, fresh poultry listing and marketing" strategy, among the household chefs, and provide reference for government to adjust and optimize the strategy on avian influenza prevention. Methods: According to the geographical characteristics and regional functions, 6 'monitoring stations' were selected from 12 residential districts of Guangzhou, respectively. Another 21 meat markets which selling live poultry, were selected in each station and 5 household chefs of each market were invited to attend a face to face interview. Basic information, personal cognitive, willingness and influencing factors to the policy were under study. Univariate and multivariate logistic regression methods were used. Results: A total of 664 household chefs underwent the survey and results showed that the rate of support to the "centralized slaughtering, fresh poultry listing and marketing" strategy was 44.6% (296/664). Results from the multi-factor logistic regression showed that those household chefs who were males (OR=1.618, 95% CI: 1.156-2.264, P=0.005), having received higher education (OR=1.814, 95% CI: 1.296-2.539, P=0.001), or believing that the existence of live poultry stalls was related to the transmission of avian influenza (OR=1.918, 95% CI: 1.341-2.743, P<0.001) were factors at higher risk. These household chefs also intended to avoid the use of live poultry stalls (OR=1.666, 95%CI: 1.203-2.309, P=0.002) and accept the "centralized slaughtering, fresh poultry listing and marketing" strategy. Conclusion: Detailed study on this subject and, setting up pilot project in some areas as well as prioritizing the education programs for household chefs seemed helpful to the implementation of the 'freezing-fresh poultry' policy.
Animals ; Attitude to Health ; China ; Humans ; Influenza A Virus, H7N9 Subtype ; Influenza in Birds ; Influenza, Human/prevention & control* ; Male ; Marketing ; Meat-Packing Industry ; Multivariate Analysis ; Pilot Projects ; Poultry/virology* ; Surveys and Questionnaires