Primary osteoporosis is a commonly and freguently encountered disease of the elderly People. There is no specific treatment for it at present time. The most important thing is prevention. Although there are so many prvention methods , nutritional prevention is one of important aspects of osteoporosis. In each stage of life,people should pay attention to intaking the nutrients which is beneficial to preventing osteoprosis.

Objective To study the expression of Ki-67 in T1 primary breast cancer tissue and its relationship with Her-2 and ER,evaluate the prognosis of early breast cancer.Method s Sixty cases of women T1 primary breast cancer tissues of 60 female cases from January 2008 to June 2011 were selected.The expressions of Ki-67 were detected by immunohistochemieal method and the relationships between Ki-67 and clinical-pathological fcatures,Her-2 and ER were analysed.Results The expression of Ki-67 in T1 primary breast cancer was 55% among the 60 patients.The expression of Ki-67 was not related with the clinical-pathological type of breast cancer and menopause (P＞0.05).The expression of Ki-67 in group with lymph node metastasis was higer than in group without lymph node metastasis(P =0.047 ,P ＜0.05).The expression of Ki-67 in Her-2positive group was higher than Her-2 negative group (P= 0.021,P＜0.05),and the expression of Ki-67 in ER positive group was lower than that of ER negative group (P = 0.037,P ＜ 0.05).Conclusions The expression of Ki-67 in T1 primary breast cancer indicates the possibility of lymph node metastasis,and its positive correlation with Her-2 positive expression,ER negative expression indicates poor prognosis.

Morality and Ethics are rooted in the development of human society.Scientists should be strict with their professional morality and positively face ethics-related arguments.nowadays,based on the rapid development of Science &Technology,the relationship between science and society and the recognition of "self" have been changed fundamentally,which have caused new challenges to scientists in the fields of morality and ethics.

Adult ; Benzene ; toxicity ; Female ; Humans ; Male ; Occupational Exposure ; T-Lymphocytes, Regulatory ; drug effects ; Young Adult

Objective To examine the relationship among gratitude,coping styles,and pathological Internet use (PIU) in secondary vocational school students.Method 1 011 secondary vocational school students were tested with gratitude questionnaire,coping style questionnaire and pathological internet use questionnaire.Results The scores of gratitude,problem-solving,help-seeking,guilty,illusion,withdrawal,rationalization and PIU were respectively (5.23 ± 1.06),(0.65± 0.21),(0.50± 0.22),(0.40± 0.23),(0.47 ±0.22),(0.51 ±0.18),(0.42±0.18),(2.23±0.97).Gratitude was significantly and negatively associated with PIU(r=-0.18,P＜0.01).Moreover,the effect of gratitude on PIU was totally mediated by problem-solving,guilty,illusion,and rationalization (27.27％,33.43％,29.72％,9.58％).However,the mediating effects of help-seeking and withdrawal were not significant.Conclusion Coping styles mediate gratitude and PIU,and coping styles should be considered during pathological internet use of secondary vocational school students.

Objective To investigate the clinical characteristics and treatment of senile patients with lumbar disc protrusion . Methods The clinical data of 56 cases of senile lumbar disc protrusion from 1990 to 2000 were reviewed retrospectively. Results 48 patients had been followed for 6 months to 7.5 years with average 4 years. Excellent and good results were 41 cases (85.4%).Conclusions There was atypical symptom in the senile patients with lumbar disc protrusion. CT was an important methods for diagnosis. The after concomitant diseases were controlled, resecting half vertebral lamina and enlarging fenestration were performed. The therapeutic results were satisfactory.

The rate of bone turnover in postmenopausal women accelerates and the newly formed osteoid is poorly mineralized, resulting in the loss of bone mineral content. Meanwhile, the requirement for calcium increases as more bone matrix needs to be mineralized. On the other hand, the reduction of serum estrogen level impairs the absorption of calcium in intestinal tract and the reabsorption in kidney, resulting in the decreased absorption and increased excretion of calcium. Therefore, sufficient calcium intake is critical for maintaining the bone structure in postmenopausal women. The reference intake of calcium differs greatly among different countries. In 2000, China established the adequate intake of calcium for Chinese women aged 50 years and older as 1000 mg/d. Diets provide the optimal source of calcium to prevent osteoporosis. Although calcium supplements have been demonstrated to be beneficial for the bone mineral density in postmenopausal women, its impact on fracture risk and cardiovascular diseases remains controversial. Available evidences suggest that calcium supplements combined with vitamin D are unlikely to increase the risk of cardiovascular diseases.

ObjectiveTo retrospectively investigate the incidence,outcome and risk factors of HBV reactivation in HBsAg-positive a patients with gastric carcinoma during cisplatin-based adjuvant chemotherapy.Methods We retrospectively reviewed the records of 2,538 patients with gastric carcinoma who received adjuvant chemotherapy from January 2005 to December 2010.Among these patients,146 HBsAg-positive patients were analyzed for the HBV reactivation in this study.The HBV serology and biochemical tests of the 146 patients were performed.The data were analyzed by chisquare test.Results Among 146 HBsAg-positive patients with gastric carcinoma,43 patients (29.5％) developed hepatitis,of which 29 (19.9％) were related to HBV reactivation.Univariate analysis showed that age ≥51 years (P=0.029) and abnormal liver uhrasonography findings such as fatty liver or early cirrhotic changes (P=0.031) were associated with HBV reactivation.However,gender,HBeAg positive status and the use of corticosteroids were not related with HBV reactivation.Conclusions HBV reactivation occurs in a significant proportion of HBsAg-positive patients with gastric carcinoma during adjuvant cisplatin-based chemotherapy.Once hepatitis developed,most patients could not finish the chemotherapy as planned despite lamivudine treatment.Therefore,HBsAg-positive gastric carcinoma patients should initiate prophylactic antiviral treatment before chemotherapy.

As more attention is given to people's life and health,China continues to increase investment in scientific research to improve the level of medical research. However,the efficiency of the investment is unknown.In this study,we used the method of data envelopment analysis (DEA) to investigate the input-output relative efficiency of the projects funded by National Natural Science Foundation of China and completed in 2009 at 17 research institutes.We found 11 institutes to be DEA efficient,and 6 to be inefficient.It also showed that adjustment of research structure and setting performance objectives may improve the level of research management and increase the efficency of the investment.

[Objective] The aim of this study is to investigate the mechanism and curative effect of cataplasma of Artemisia Argyi by supercritical CO 2 fluid extraction to rat weight, foot swel ing, interleukin-1β, interleukin-17 and tumor necrosis factor-αin the adjuvant arthritis rat models;and afford theoreti-cal evidence for clinical work.[Methods]50 healthy male SD rats were randomly divided into 5 groups:Control group, Model group, Low-dose treatment group, Medium-dose treatment group, High-dose treatment group. Model and al treatment goups took CFA for model ing. After establishing animal models of AA rats, the first group and second group used cataplasm without active drug ingredients. Other groups were given treatment according to dif-ferent drug doses. Assess the joint swel ing degree at different times. Measure the arthritic index and rat weight in two weeks. After 21 days ,detect the cy-tokines level of IL-lβ,IL-17 and TNF-α from the rat's serum and examine the pathological changes of joint observed by HE . [Results]Cataplasma of Artemisia Argyi by supercritical CO2 fluid extraction can significantly reduce rat foot swel ing of the ankle joint pathology ,reduce arthritis score and slow down the weight loss,meanwhile,effectively improve the general daily behavior of rats. The standard of IL-1β,IL-17,TNF-α in serum can be decreased by cataplasma of Artemisia Argyi by supercritical CO2 fluid extraction. The pathological result showed: in the treatment group,the rats synovial hyperplasia the vesselwing reduced, the inflammatory cel infiltration was more decreased than the model group. [Conclusion]The result showed that the cataplasma of Artemisia Argyi by supercritical CO2 fluid extraction had an obvious effect in treating RA. The mechanism was probably that it regulated the immune dis-order of RA.