BACKGROUND: Type Ⅰ collagen is a specific collagen secreted by in vitro cultured osteoblast, and the formed network is the basis of bone mineralization, which also reflects the ability of osteoblast bone formation. Studies have shown astragalus root increased osteoblast proliferation. However, the effect of astragalus root on improving type Ⅰ collagen expression of osteoblast remains poorly understood.OBJECTIVE: To evaluate the effect of astragalus root injection on the abilities of rat cranium-derived osteoblast proliferation and type Ⅰ collagen expression.METHODS: Rat osteoblast was cultured in vitro and divided into control group (MEM culture solution containing calf serum) and astragalus root groups (different concentrations). The effect on osteoblast proliferation was evaluated on days 1, 3, 5, 7, and 9 by MTT method. Moreover, the expression of type Ⅰ collagen protein was observed after 6 hours of treatment with astragalus root injection using in cell western-blot method. In addition, the gene expression of COLLal was investigated by real-time PCR method.RESULTS AND CONCLUSION: From days 3 to 9, the different concentrations of astragalus root injection improved osteoblast proliferation, respectively compared with control group (P ＜ 0.05), and this ascending trend peaked on day 7. Different concentretions of astragalus root injection improved COLLol mRNA expression, especially 15% astragalus root injection was the most effective. The type Ⅰ collagen protein expression of 15% and 10% astragalus root injection were significantly greater compared with the control group (P ＜ 0.05). Astragalus root injection improved in vitro cultured osteoblast proliferation and type Ⅰ collagen secretion in a certain dose-effect manner.

Objective To investigate the relationship between expression of nuclear factor kappa B p65 ( NF-κB p65) and hippocampal neuronal apoptosis in acute necrotizing pancreatitis (ANP) rats with brain injury. Methods Sixty-four SD rats were randomized into normal saline group (NS) and ANP group. The ANP rat model was induced by retrograde injection of 4% sodium taurocholate into the pancreaticobiliary duct of SD rats. Nissle stain was used to detect the brain injury. Neuronal apoptosis was determined by TUNEL.NF-κB p65 expression was detected by immunohistochemistry and RT-PCR. Results Hippocampal neuron was absent, karyopyknosis, unclear nucleolus and decreased Nissl bodies were found, the injuries was aggravated with time. The apoptosis index at the 3, 6 and 12 h in ANP group was 10.63 ±0.24, 21.02±0.25, 17.12±0.36, respectively, while they were 0.33±0.19,0.71±0.67, 0.45 ± 0. 33 in NS group, and the difference was statistically significant ( P ＜ 0. 01 ). The expressions of NF-κB p65 mRNA were 0. 63 ± 0.05,1.05 ±0.06,0.92 ±0.05, which were significantly higher than those in the NS group (0.11 ±0.01,0.12±0.01,0.08±0.01,P＜0.05).The chatge of expression of NF±κB p65 protein was consistent with that of NF-κB p65 mRNA. Conclusions The brain injury of ANP rats was highly correlated with neuronal apoptosis at the early and middle phase of ANP, and its mechanism may be related with NF-κB p65 activation.

Objective To explore the electrophysiological examination results and risk factors of type 2 diabetic peripheral neuropathy. Methods 337 patients with type 2 diabetes from August 2014 to December 2016 in the first people's hospital in Shizuishan city were divided into DPN group (n=218) and NPDN group(n=119) according to the results of NCV and SSR examinations. The general information and laboratory biochemical indicators in the two groups were compared. Multivariate Logistic regression was used to analyze the risk factors of DPN. Results The diagnosis rate of DPN detected by NCV combined with SSR was higher than that of NCV or SSR alone(P<0.05);There were significant differences in age,duration of diabetes,history of hypertension,systolic blood pressure,2h FBG,HbA1c,FINS,2 h INS,FC-P, 2h FC-P,ACR between the DPN group and NPDN group(P<0.05);Logistic multivariable analysis showed that age, duration of diabetes, 2h FBG, HbA1c, ACR were independent risk factors for DPN. Conclusion It is beneficial to increase the diagnosis rate of DPN by NCV combined with SSR. There is a higher incidence rate of DPN type 2 diabetes patients with older grade, longer duration of diabetes, higher 2h FBG, HbA1c and ACR.

Objective To determine activity concentrations of natural and artificial radionuclides in the surface soils in Huhhot city,measure environmental radiation level,and evaluate risks to residents health.Methods Radionuclides in 48 surface soil samples were determined by means of the high purity germanium γ spectrometer;environmental radiation level was measured using an environment γ dose rate meter;comparison was made of average activity concentrations in soils between domestically and globally;and the radiation dose to the local residents was estimated by using the methods recommended by UNSCEAR and reported in the related literatures.Results The average values for specific activity of 238U,232Th,226 Ra,40K and137 Cs in the surface soil samples in Huhhot city were (29.29 ± 12.95),(39.33±4.34),(29.77 ±3.21),(650.49 ±62.21) and (1.62 ± 1.53) Bq/kg,respectively;the measured air absorbed dose rate was (86.32 ± 11.92) nGy/h;the annual effective dose to local residents from outdoor γ radiation was 79.27 μSv/year.Conclusions The specific activities of radionulcides in soils and the environmental radiation in surface soil in Huhhot city were at a normal background level,with low risks to health of the local residents.

OBJECTIVE To evaluate the cleaning efficacy of the automatic cleaning machine and the risk factors to ensure the effect of disinfection and sterilization. METHODS Cleaning efficacy of the automatic cleaning machines was detected by STF cleaning test card.It was put in the first cabin of every automatic cleaning machine.And it was also tested for these factors in determining cleaning qualities such as enzyme concentration,water temperature and pieces of instruments washed. RESULTS The cleaning efficacy of the automatic cleaning machines was 98.9% in the continuous two years.The qualified rate was 98.6% for surgical instruments,99.4% for all instrument in clinical sections. CONCLUSIONS The machine is suitable for the cleaning of surgical instruments.It also raises working efficiency,cutting down the cost of repairs and maintenance,reducing the chances of injury and infections in nurses who performed manual cleaning precedures.The procedures of the STF cleaning test card in detecting the cleaning efficacy is simpler,safer,and suitable for clinical applications.

OBJECTIVE To explore the best method of cleaning and sterilization of laparoscopic apparatus.METHODS Laparoscopic apparatus useed in the hospital was divided into four groups at random:with artificial cleaning and sterilization by ethylene oxide(EO),with machine-cleaning and sterilization by EO,with artificial cleaning by hydrogen peroxide plasma,and with machine-cleaning and sterilization by hydrogen peroxide plasma.And The sterilization effect of four groups was observed.RESULTS The positive cleaning result of manual with ultrasonic cleaning was 97.5%,but with autowash cleaner was 73.3%.The rate of qualification of artificial-groups was higher than machine groups obviously(P

Objective To explore coping strategies and influence factors in primary glaucoma patients through describing characteristics of their coping strategies.Methods From November 2007 to June 2008,data were collected from 120 primary glaucoma patients in three hospitals in Guangzhou and Shenzhen.The final sample consisted of 100 patients and the data underwent analysis.Results Among different coping styles of primary glaucoma patients,facing was lower than norm,avoiding and yielding were higher than norm.The factors related to coping style were age,different cohabitant,different economic condition,different occupation,different educational level and health payment mode.Conclusions Primary glaucoma patients usually took avoiding or yielding coping styles.Nurses should help patients with low income and education background to face the disease positively.Besides,fully consideration should be given to patients with different age,at the same time,marriage and family support should also exert active function.

Objective To ascertain the gross α/β levels in drinking water in Inner Mongolia and to estimate the annual effective dose to the local residents from radionuclides in drinking water.Methods A total of 768 water samples were collected from 101 counties distributed over 12 cities of Inner Mongolia.Low background α/β measuring instrument was used to measure the radioactivity level;On this basis,use EPA Federal Guidance Report 11 universal method to estimate the annual effective dose to the local residents via intake of radionuclides from drinking water.Results The gross α radioactivity range was 0.016-1.003 Bq/L for tap water,O.016-0.975 Bq/L for factory water,0.017-1.544 Bq/L for river water,0.120-0.672 Bq/L for lake water,0.016-0.492 Bq/L for reservoir water,0.016-1.139 Bq/L for well water,0.032-3.156 Bq/L for spring water,respectively.The gross β radioactivity range was 0.030-0.828 Bq/L for tap water,0.031-0.571 Bq/L for factory water,0.066-0.873 Bq/L for river water,0.169-2.268 Bq/L for lake water,0.046-0.519 Bq/L for reservoir water,0.071-0.526 Bq/L for well water,0.087-1.063 Bq/L for spring water,respectively.Conclusions In Inner Mongolia,the gross α/β mean value in tap water is less than the World Health Organization-recommended value and the average annual effective dose from tap water is also less than the WHO-recommended value O.1 mSv/a.The gross α/β radioactivity from the other water samples is also within the range of the nationwide average.

Objective To investigate the influence of prepubertal exposure to estradiol benzoate (EB)in the male reproductive system of the rats and the natural process of tissue repair,and to clarify the possible mechanism of the reproductive toxicity of exogenous estrogen.Methods Ninety 2 1-day-old male Wistar rats were randomly divided into 2 experimental groups (low dose of EB group and high dose of EB group,n=30)and control group (n=30). The rats in the experimental groups were injected with EB dissolved in peanut oil at 15(low dose of EB group)and 15 000μg·kg-1 (high dose of EB group)respectively,the rats in control group received equal vehicle injection only,once every other day for two weeks from postnatal day(PND)21 to 34.All of them were normally fed after the drug usage was stopped.The testes were harvested at the stages of PND 60 and PND 125(n=15 at each stage).The serum levels testosterone of (T),follicle-stimulating hormone(FSH),luteinizing hormone(LH),prolactin (PRL)and estradiol(E2)of the rats in various groups were detected with radioimmunology method and the weights of the rats in various groups were recorded;the histological changes of the testes tissue were observed with light microscope.Results On PND60,compared with control group,the T levels in low dose of EB group and high dose of EB group were decreased(P<0.05 or P<0.01);the FSH,LH and E2 levels were increased (P<0.05 or P<0.01),and the PRL levels had no change(P>0.05);the weights of testes were decreased(P<0.01);the histological changes of the testes of the rats in experimental groups included seminiferous tubules maldevelopment, decreased cell number of seminiferous epithelia.Compared with low dose of EB group,the T and FSH levels in high dose of EB group were decreased (P<0.05 or P<0.01),the E2 and LH levels were increased(P<0.01),the PRL level had no change (P>0.05 ), and the weight of testes was decreased (P<0.01 );the diameters of seminiferous tubules were smaller,there was no sperm in high dose of EB group while there were a few sperms in low dose of EB group.On PND125,compared with control group,the T,FSH and PRL levels in low dose of EB group and high dose of EB group were decreased(P<0.01),the E2 levels were increased (P<0.01);the LH level in low dose of EB group was increased(P<0.05),the LH level in high dose of EB group was decreased(P<0.01), and the weights of testes in high dose of EB group were decreased(P<0.01);the diameters of seminiferous tubules and the cell number of seminiferous epithelia were increased but not apparent change.Compared with low dose of EB group,the T,LH levels in high dose of EB group were decreased (P<0.01),the E2 and FSH levels were increased(P<0.01),the PRL level had no change(P>0.05),and the weight of testes was decreased(P<0.01);there was still no sperm in high dose of EB group, the number of sperms was increased in low dose of EB group, but it was still lower than that in control group.Conclusion EB is harmful to the reproductive system and can change the normal serum sex hormone levels,even induces the irreversible injury.

Due to the scarcity of resources of Ziziphi spinosae semen (ZSS), many inferior goods and even adulterants are generally found in medicine markets. To strengthen the quality control, HPLC fingerprint common pattern established in this paper showed three main bioactive compounds in one chromatogram simultaneously. Principal component analysis based on DAD signals could discriminate adulterants and inferiorities. Principal component analysis indicated that all samples could be mainly regrouped into two main clusters according to the first principal component (PC1, redefined as Vicenin II) and the second principal component (PC2, redefined as zizyphusine). PC1 and PC2 could explain 91.42%of the variance. Content of zizyphusine fluctuated more greatly than that of spinosin, and this result was also confirmed by the HPTLC result. Samples with low content of jujubosides and two common adulterants could not be used equivalently with authenticated ones in clinic, while one reference standard extract could substitute the crude drug in pharmaceutical production. Giving special consideration to the well-known bioactive saponins but with low response by end absorption, a fast and cheap HPTLC method for quality control of ZSS was developed and the result obtained was commensurate well with that of HPLC analysis. Samples having similar fingerprints to HPTLC common pattern targeting at saponins could be regarded as authenticated ones. This work provided a faster and cheaper way for quality control of ZSS and laid foundation for establishing a more effective quality control method for ZSS.