Objective: To standardize the reporting system on hepatitis B in order to improve the quality of monitoring program in Henan province. Methods: A total of 6 sites of Hepatitis B pilot surveillance were selected in Xinzheng of Zhengzhou city, Linzhou of Anyang city, Shanyang district of Jiaozuo city, Shaoling district of Luohe city, Yongcheng of Shangqiu city, Pingqiao district of Xinyang city in Henan province. Subjects under study were those reported hepatitis B cases, from 2012 to 2016. Cases diagnosed in 2011 were chosen as controls. Data on classification of hepatitis B, time that HBsAg became positive and ALT value of the cases were analyzed annually. 5 ml venous blood was collected and anti-HBc IgM confirmed test was made for those suspected acute cases on hepatitis B. Based on the 2016 data from the monitoring system, the incidence of acute hepatitis B in Henan province was estimated. Results: The number of reported hepatitis B cases had declined in 6 sites of Hepatitis B pilot surveillance substantially. A total of 17 436 hepatitis B reported in 2011 but only 2 632 cases were reported in 2016, with a reduction of 84.90%(14 804/17 436) in these six monitoring sites. The number of unclassified hepatitis B cases also dropped sharply. In 2011, 36.87% of the cases were unclassified, but the figure reduced to 0.08% in 2016, from the six sites. The rate on ALT detection also gradually improved. The rate of misdiagnosis on HBV carrier from hepatitis B almost disappeared. From 2013 to 2016, 777 blood samples were collected from six pilot sites. 29.34% (228/777) of the blood samples were tested positive for anti-HBc IgM after confirmed by the hepatitis laboratory of the China Center for Disease Control and Prevention. Conclusions: Since the development of the pilot surveillance program, the quality of reporting system on hepatitis B had been improved, as well as the accuracy of diagnosis. Rate on the accuracy of reporting on hepatitis B and the methods of testing should be improved at the monitoring sites.
China/epidemiology* ; Cities ; Disease Notification/statistics & numerical data* ; Hepatitis A/epidemiology* ; Hepatitis B/epidemiology* ; Hepatitis B Antibodies/blood* ; Hepatitis B Surface Antigens/blood* ; Humans ; Incidence ; Pilot Projects ; Population Surveillance ; Sentinel Surveillance

Objective: To study the relations between neck/shoulder or low back pain and their daily behavioral habits among middle school students in Shenzhen. Methods: We randomly chose 3 952 students from 10 high schools in Shenzhen to complete the questionnaires. Data was gathered and analyzed, using the IBM SPSS 23.0. Results: Of the 3 952 participants, 20.3% had neck/shoulder pain and 15.2% had low back pain. Among students experienced neck/shoulder pain, female (25.3%), high school (24.5%) and boarding students (24.4%) experienced higher rates of neck/shoulder pain (P<0.05). Female students (17.9%) also had higher rate of low back pain (P<0.05). Results from logistic regression analysis showed that factors as: gender, type of school, taking naps on the desk, staying up late, self-perceived stress from learning, overloading homework, time spent on mobile phone and TV, spending long time on computer etc. were related to the neck/shoulder pain (P<0.05). Factors as: gender, naps on the desk, stay up late, self-perceived stress, overloading homework, time spent on mobile phone and TV etc., were related to low back pain (P<0.05). Conclusion: Neck/shoulder pain and low back pain were both commonly seen while high self-perceived stress, sedentary behaviors and poor sleeping habits were associated with both neck/shoulder and low back pain in high school students in Shenzhen.
Female ; Habits ; Humans ; Low Back Pain ; Neck Pain ; Risk Factors ; Schools ; Shoulder ; Shoulder Pain ; Sleep ; Students ; Surveys and Questionnaires

Animals ; Cell Division ; Drosophila melanogaster ; cytology ; enzymology ; Female ; Stem Cells ; cytology ; enzymology ; Ubiquitin-Protein Ligases ; metabolism

AIM: To study the effects of naringenin eye drops on NaIO3-induced retinal pigment epithelium (RPE) degeneration and laser-induced choroidal neovascularization (CNV) in rat eyes.METHODS: The 35mg/kg NaIO3-induced RPE degeneration was prevented by 10g/L naringenin eye drops 3 times a day for 7 days in advance of NaIO3 injection, and then 2 to 4 weeks thereafter, RPE function was measured with C-wave of electroretinogram (ERG). The laser-induced CNV rats were treated with laser to break the Bruchs membrane and the CNV formation was prevented by 10g/L naringenin eye drops instilled 3 times a day for 2 to 4 weeks. The CNV formation was measured with fluorescein angiography (FA) and flat mount. RESULTS: Two weeks after NaIO3 injection, the amplitude of ERG C-wave fell markedly in NaIO3 group to 53% of normal group (P<0.01). No apparent difference was observed in naringenin+ NaIO3 group. Four weeks later, the NaIO3 group fell to 37% of normal group (P<0.01), while the naringenin+ NaIO3 group fell to only 57% of normal group (P<0.01). There is a 52% reversal of the ERG C-wave by naringenin as compared to NaIO3 treated group (P<0.05). Two weeks and four weeks after laser treatment, naringenin reduced the CNV formation to 53% and 49% of control group (100%) measured by FA (P<0.01). Four weeks after laser treatment, naringenin reduced the CNV formation by 47% as compared to control group measured with flat mount (P<0.01).CONCLUSION: Naringenin significantly protected RPE from NaIO3 induced degeneration and can also prevent CNV formation.

·AIM: To study the effects of 10g/L hydralazine eye drops on 35mg/kg NaIO3-induced degeneration in rat eyes. · METHODS: Various doses of NalO3 and/or saline alone were injected into Brown Norway rats from hypoglossal vein. After 3, 7, 14 or 28 days of injection, ERG a-, b-, c- wave, fast oscillation (FO) and light peak (LP) were measured along with retinal colored pictures and fluorescein angiography taken. Some rats were chosen to study the histology of retinas by light microscopy and autofluorescence of retina flatmounts. Different concen- trations of NaIO3 were given to RPE-19 cells, and cell proliferation rate was measured. For hydralazine study, 35mg/kg NaIO3 was injected into Brown Norway rat from hypoglossal vein. NaIO3 group was treated with saline alone after NaIO3 injection, 10g/L hydralazine + NaIO3 group was treated with 10g/L hydralazine eyedrops after NaIO3 injection whereas normal group was treated with saline alone without NalO3 injection. All eyedrops were instilled locally 3 times a day for 4 weeks and ERG c-wave was measured at the end of 2 and 4 weeks.· RESULTS: After NaIO3 administration, the amplitude of all ERG waves fell markedly in large dose groups at 30, 40 or 60mg/kg NaIO3. Not many changes were observed in groups treated with < 30mg/kg NaIO3. Some retinal necrosis appeared from 3 days post-injection (PI) in 30mg/kg NaIO3 group, which became more serious in larger dose groups or longer treatment time, but no apparent change was found in smaller dose groups. Similarly, on the retina flatmount, RPE monolayer showed necrosis from 3 days PI in the 30mg/kg NaIO3 and larger dose groups. On histological examination, no significant change was seen in 30mg/kg NaIO3 and lower concentration groups. In cell culture experiment, changes were found in RPE-19 cells proliferation rate with a concentration of NaIO3 at 30mg/L or higher. In hydralazine experiments, 4 weeks after injection of NaIO3, ERG c-wave fell markedly in NaIO3 group to 31% of control group (P < 0.01). The ERG c-wave of hydra- lazine + NaIO3 group fell only to 50% of control group (P<0.05). This was a 61% reversal of the c-wave of NaIO3 treated group. · CONCLUSION: RPE degeneration induced by NaIO3 was both dose and time dependent. Around 30 to 40 mg/kg NaIO3 would be the optimal to be used as a non-exudative age-related macular degeneration rat model. Hydralazine may postpone the development of non-exudative age- related macular degeneration.

Objective To measure serum ghrelin level in elderly Chinese, and investigate the relationship of the serum ghrelin level with age, obesity and other metabolic disorders. Methods A total of 109 men aged over 60 years without history of smoking and alcohol consumption from health examination were enrolled in this study. Subjects were excluded if they had serious diabetic complications, coronary artery disease and hepatic or renal dysfunction. A cross sectional study was made on ghrelin level and the correlated metabolic disorders. Results Compared with ghrelin level in subjects with normal BMI [(823. 57±410.40) ng/L], the ghrelin level was significantly decreased in overweight and obese elderly male, [(442.42 ± 171.10) ng/L and (434.64 ± 177.65) ng/L respectively]. ghrelin was significantly lower in subjects with three or more metabolic disorders (420.84±165.91) ng/L than in those with less disorder. Single factor analysis showed ghrelin was inversely associated with BMI, TG and uric acid (r=-0.359,-0.243,-0.189), but it was not associated with age, blood pressure, fasting glucose and insulin levels. Multivariate analysis revealed only BMI significantly affected the level of ghrelin (β =-0.386). Conclusions BMI is closely associated with ghrelin in elderly male,ghrelin is significantly lower with increased number of metabolic disorders.

Introduction: Morphine, the main active ingredient of opium, and other clinically useful opioid analgesics all mediate their effects by activating the mu opioid receptor (MOR). Studies involving MOR knockout mice have shown that the interaction with the MOR is also responsible for the many notorious side effects associated with these drugs including dependence and addiction [1]. Therefore, selective antagonists for the MOR are needed to study its function in drug abuse and addiction.Goal: Design and synthesis of a series of naltrexone derivatives and determination of their pharmacological profile at all three opioid receptors.Material and methods: Based on the lead compound that was previously identified in our lab, a series of 14-N-substituted naltrexone derivatives were synthesized. Thebaine was used as the starting material and the naltrexone derivatives were synthesized in multiple steps using various organic synthesis methods. The final compounds were purified using column chromatography and characterized using IR, NMR, mass spectroscopy, HPLC, and melting point. The final compounds were then tested in a competitive radioligand binding assay at the mu, kappa, and delta opioid receptors using [3H]naloxone, [3H]diprenorphine, and [3H]naltrindole to label the receptors respectively. The [35S]GTPγS binding assay was employed to determine the relative efficacy of these compounds at the MOR.Results: Competitive binding assay results showed that the naltrexone derivatives with amide linkageto various heterocyclic aromatic rings have a subnanomolar to nanomolar affinity for all three opioid receptors. The lead compound of the series was shown to be dually selective for the mu and kappa opioid receptors over the delta opioid receptor. Furthermore in the [35S]GTPγS binding functional assay, the lead compound was determined to be an antagonist at both mu and kappa opioid receptors.Conclusion: It is well established that MOR antagonists by themselves can be effective at treating various forms of drug addiction [2]. Furthermore, there is growing evidence that suggests KOR antagonists may be beneficial in lowering drug cravings and preventing relapse in addicts [3]. MOR-KOR dual-antagonists may find novel clinical utility as therapeutic agents in the treatment of opioid dependence.References:1. Matthes H. “Loss of morphine-induced analgesia, reward effect and withdrawal symptoms in mice lacking the mu-opioid-receptor gene” Nature [383], 1996.2. Garbutt, J. “Efficacy and tolerability of naltrexone in the management of alcohol dependence” Current Pharmaceutical Design [16], 2010.3. Redila, V. “Stress-induced reinstatement of cocaine seeking is mediated by the kappa opioid system” Psychopharmacology [200], 2008.

Objective: To understand the prevalence of major human parasitic diseases and related factors in Henan province. Methods: This stratified sampling survey was carried out according to the requirement of national survey protocol of major human parasitic diseases, 2014-2015. The prevalence of soil-transmitted helminths infection, taeniasis and intestinal protozoiasis were surveyed in 104 sites selected from 35 counties (districts) and the prevalence of clonorchiasis was surveyed in 62 sites selected from 37 townships. In each survey spot, 250 persons were surveyed. A total of 26 866 persons and 15 893 persons were surveyed. Modified Kato-Katz thick smear was used to detect the eggs of intestinal helminthes. Tube fecal culture was used to identify the species of hookworm. The Enterobius eggs were detected in children aged 3 to 6 years by using adhesive tape. The cyst and trophozoite of intestinal protozoa were examined with physiological saline direct smear method and iodine stain method. Results: The overall infestation rate of intestinal parasites was2.02% in Henan, and the worm infection rate was higher than protozoa infection rate. Fourteen kinds of intestinal parasites were found, including nematode (5 species), trematode (2 species), and protozoan (7 species). The infection rate of Enterobius vermicularis was highest, and Qinba Mountain ecological area had the highest infestation rate of intestinal parasites in 4 ecological areas of Henan. There was no significant difference in intestinal parasite infection rate between males and females (χ(2)=3.630, P=0.057), and the differences in intestinal parasite infection rate among different age groups had significance (χ(2)=124.783, P=0.000 1). The infection rate reached the peak in age group ≤9 years and the major parasite was Enterobius vermicularis. Furthermore the overall human infection rate of parasite showed a downward trend with the increase of educational level of the people (χ(2)=70.969, P=0.000 1), the differences had significance (χ(2)=120.118, P=0.000 1). For different populations, the infection rate of intestinal parasites was highest among preschool children. The infection of intestinal helminth was mainly mild, only 2 severe cases were detected. The infection rate of Clonorchis sinensis in urban residents was only 0.006%. Logistic regression analysis showed that being preschool children (χ(2)=15.765, P=0.000 1) and drinking well water (χ(2)=45.589, P=0.000 1) were the risk factors for intestinal parasite infection, and annual income per capita of farmers was the protective factor against intestinal parasite infection. The infection rates of protozoa and intestinal parasites decreased sharply compared with the results of previous two surveys, and the rate of intestinal helminth infection also dropped sharply compared with the second survey. The numbers of protozoa, helminth and intestinal parasites detected in this survey were all less than the numbers found in the previous two surveys. Conclusions: Compared the results of three surveys in Henan, the infection rate of protozoa and intestinal parasites showed a downward trend. The prevention and treatment of Enterobius vermicularis infection in children should be the key point of parasitic disease control in the future.
Animals ; Child ; Child, Preschool ; Clonorchiasis/epidemiology* ; Farmers ; Feces/parasitology* ; Female ; Helminthiasis/epidemiology* ; Helminths ; Humans ; Intestinal Diseases, Parasitic/parasitology* ; Male ; Prevalence ; Protective Factors ; Risk Factors ; Rural Population ; Soil Microbiology ; Surveys and Questionnaires ; Taeniasis/epidemiology* ; Trematode Infections/parasitology* ; Urban Population ; Water Wells

Objective: To understand the situation related to health seeking and diagnosis of imported malaria and to provide practical measures for malaria elimination in Jiangsu province. Methods: Data on imported malaria cases in Jiangsu province was retrieved in CISDCP from 2014 to 2016. Relevant information on health seeking behavior, diagnosis and treatment of the disease was gathered. Results: A total of 1 068 imported cases were reported in Jiangsu province from 2014 to 2016. Except for one malaria case that was caused by blood transfusion, the rest patients were all recognized as 'imported'. Majority of the cases were migrant laborers working in African countries. The accurate rates on the diagnosis of ovale, vivax and quartan malaria and mixed infection were relatively low, as 79.3% (107/135), 29.5% (18/61), 52.9% (18/34) and 0.0% (0/2) at the primary health care settings, respectively. Rate of seeking health care on the same day of onset was more in 2015 than in 2014 and 2016 (χ(2)=18.6, P=0.001). While only 65.4% (699/1 068) of the patients were diagnosed correctly at the primary health care settings. There appeared no statistical difference in the 3-year-study period (χ(2)=5.4, P=0.246). Capacity on 'correct diagnosis' seemed stronger at the CDC than at the hospital levels (χ(2)=13.2, P=0.000; χ(2)=5.4, P=0.020). Totally, 72.7% (32/44) of the severe falciparum malaria cases did not immediately seek for health care when the symptoms started. Conclusions: Migrant workers returning from the high endemic malaria areas seemed to have poor awareness in seeking health care services. Capability on correct diagnosis for malaria at the primary health care settings remained unsatisfactory and staff from these settings needs to receive adequate training.
Adult ; China/epidemiology* ; Female ; Human Migration ; Humans ; Malaria/transmission* ; Male ; Middle Aged ; Plasmodium/isolation & purification* ; Prevalence ; Seasons ; Transients and Migrants ; Travel

Objective: To explore the relationship between meat consumption and metabolic syndrome (MS) in Chinese adults aged ≥18 years. Methods: The data were obtained from 2010- 2012 National Nutrition and Health Survey. A total of 34 923 subjects who completed the dietary survey, the physical examination and had the testing results of blood sugar and blood lipid levels were enrolled in this study. MS was defined according to the diagnostic criteria of China Diabetes Society 2013. The prevalence ratios of MS and each form of MS and related 95%CI were calculated after post stratification weight according to the population data (2009) released by the national bureau of statistics. Results: The average meat intake among subjects was 94.8 g/d. People who had meat consumption between 100 g/d and 199 g/d had the lowest prevalence of MS, abdominal obesity and hyperglycemia. As the meat consumption increased, the prevalence of MS in men increased. Men who had meat consumption of ≥300 g/d had a higher risk of MS than those who had low level of meat consumption, with prevalence ratio equaled to 1.46 (95%CI: 1.14~1.87). Similar trend was not observed in women. Conclusion: Moderate intake of meat is associated with reduced risk of MS in Chinese adults.
Adolescent ; Adult ; China/epidemiology* ; Diet ; Female ; Humans ; Male ; Meat ; Metabolic Syndrome/ethnology* ; Obesity, Abdominal/ethnology* ; Prevalence ; Risk Factors