Objective To understand the difference of Demodex prevalence among medical students living and studying together with different classes, sexes and nationalities. \ Methods\ Demodex folliculorum and Demodex brevis were detected by using cellophane tape on the nasolabial grooves. \ Results\ The overall prevalence was 51\^5% in 2 248 medical students. Prevalence in different classes and sexes was: freshman 42\^6%, sophomore 49\^6% and third year students 66\^8%; 55\^7% in males and 48\^7% in females. Prevalence in students with different nationalities was: Mongolian 49\^8%, Han 52\^8% and other minorities 64\^3%. \ Conclusion\ The Demodex prevalence in students of senior classes was higher than those from junior ones (P

BACKGROUND: The method of replenishing kidney has becoming one of the therapies for anti-senility in gerontology in Chinese medicine.OBJECTIVE: To probe into the effects of the formula for nourishing kidney yin-zuoguiyin on serum malondialdehyde (MAD) content and superoxide dismutase (SOD) activity in metabolism of free radical.DESIGN: Complete randomized control experiment.SETTINGS: Microbiology and Immunology Department of Guangdong Medical College.PARTICIPANTS: The experiment was performed in Immunology Research Room of Wannan Medical College from September 2002 to July 2004. Forty male senile ICR mice were employed, provided by Institute of Experimental Animal of Medical Scientific Academy in Sichuan. They were randomized into senile control, zuoguiyin group, single shudi (Radix Rehmanniae Praeparata) group (single group) and shudi (Radix Rehmanniae Praeparata) removal group (removal group), 10 mice in each one. Zuoguiyin composes of shudi (Radix Rehmanniae Praeparata), shamyao (Rhizoma Dioscoreae), gouqi (Fructus Lycii), zhi gancao (Radix Glycyrrhizae Praeparata),fuling (Poria) and shangyurou (Fructus Corni) at the ratio of 9:6:6:3:4:5. After decocted routinely, the solution in zuoguiyin group was concentrated to 0.577 5 g/mL of raw herbs contained; that in single group was to 0.157 5 g/mL and that in removal group was to 0.42 g/mL. The mixed medical solutions of 100 g/L were prepared successively in each group.INTERVENTIONS: In zuoguiyin group, single group and removal group,solutions of zuoguiyin and shudi (Radix Rehmanniae Praeparata) and solution with shudi (Radix Rehmanniae Praeparata) removed were administrated successively, 4 times/day, 1.5 mL/time, totally for 75 days. No any drink was provided during the medication. The mice in senile control drank pipe water. After the eyeball extracted, blood of 2 mL collected and serum preserved, the thiobarbituric acid method was used to determine MAD content, the xanthine oxidase method was to determine SOD activity and the colorimetric method was to determine general capacity of anti-oxidation in serum.MAIN OUTCOME MEASURES: ① serum MAD content; ② serum SOD activity; ③ general capacity of anti-oxidation in serum.RESULTS: One mouse was dead in senile control and 3 mice in single group. Terminally, 36 mice entered result analysis. ① MAD content:Serum MAD content in zuoguiyin group and single group were lower than that in senile control [(5.280±1.204) μmol/L and (5.886 2.717) μmol/L,(9.533 3.494) μmol/L, (q=3.641-4.657, P ＜ 0.05)]. Serum MAD content in zuoguiyin group and single group were basically same. ② SOD activity: SOD activity in zuoguiyin group and removal group were higher than senile group [(7.008±0.782) mkat/L and (6.989±0.809) mkat/L, (5.908±0.392) mkat/L,(q=3.641-4.657, P ＜0.05)]. SOD activity in zuoguiyin group and removal group were basically same and that in single group and senile control were basically same. ③ General anti-oxidation capacity: The general capacity of anti-oxidation in serum in zuoguiyin group and single group were stronger than that in senile control, that in removal group was weaker than senile control, but the differences were not significant (P ＞ 0.05).CONCLUSION: Zuoguiyin remarkably reduces MAD content and improves SOD activity in serum of senile mice. It is indicated that zuoguiyin acts remarkably on improving metabolism of free radical in senile body,strengthening SOD activity and reducing organic injuries caused by MAD accumulation.

Objective:To explore the effect of zuoguiyin and its partial prescriptions on cellular immune function in senile mice.Methods:Healthy male ICR senile mice were divided into 4 groups at random: old contrast group, ZGY group, prepared rhizome of rehmannia(PROR) group and none prepared rhizome of rehmannia(NPROR) group. The senile mice had been drunk zuoguiyin and its partial prescriptions for 75 days, then observing the differences through thymic index, spleen index, activity of T lymphocyte and the level of IL-2 after using different drugs.Results:Acted by ZGY, ZGY had enhanced cellular immune function of senile mice, appearing that thymic index, spleen index, activity of T lymphocyte and the level of IL-2 were distinctly higher than those of the old contrast group. Compared to ZGY,prepared rhizome of rehmannia also enhanced the activity of T lymphocyte. However, it had no effect on thymic index, spleen index and the level of IL-2.So its effect on anti-senility was not better than ZGY. None prepared rhizome of rehmannia group had no distinct effect on those indexes.Conclusion:Zuoguiyin had an action of antisenility by improving cellular immune function.

Objective To explore the clinical significances of leukocyte (WBC ) ,C‐reactive protein (CRP ) and procalcitonin (PCT) in early diagnosis of bacterial bloodstream infections (BSI) ,in order to provide references for early diagnosis of BSI . Methods The detection results of WBC ,PCT and CRP from 48 cases of patients with positive blood culture(positive blood culture group) and 50 cases of patients with negative blood culture(negative blood culture group) were retrospectively analysed .Then com‐pared the detection results between the two groups ,and between patients with gram‐positive bacteria infection and those with gram‐negative bacteria infection in the positive blood culture group .The diagnostic performance of WBC ,PCT and CRP were determined by drawing the receiver operator characteristic(ROC) curves ,and areas under ROC curves(ACUs) were calculated .The perform‐ance of the three indicators in predicting BSI were evaluated by using the binary logistic regression analysis .Results The levels of PCT and CRP in positive blood culture group was significantly higher than those in negative blood culture group ,had statistically significant differences(P<0 .05) ,while no statistically significant difference was found in WBC count between the two groups(P>0 .05) .In the positive blood culture group ,statistically significant difference was only found in PCT level between patients with gram‐positive bacteria infection and patients with gram‐negative bacteria infection(P<0 .05) .The AUCs of WBC ,PCT and CRP were 0 .579 ,0 .746 and 0 .624 ,respectively .The result of the binary logistic regression analysis showed that only PCT made a unique statistically significant contribution to the model(P=0 .013) for predictive diagnosis of BSI .And the positive predictive rate of joint detection of these three indicators was 71 .4% .Conclusion WBC ,PCT and CRP could be indicators for early diagnosis of BSI ,while PCT and CRP might have much more important significance ,moreover ,PCT could distinguish between gram‐positive bacterial in‐fection and gram‐negative bacteria infection .

Objective To understand the relationship between Demodex and bacteria infection in rosacea (brandy nose), and to find effective means for the treatment. MethodsCellophane tape was used to detect Demodex on the nasolabial grooves and the face; sebum and tissue on face was scraped and cultured to examine bacteria under microscope. The hospital_made anti_rosacea lotion was used on the affected part two times a day for 7 days. Results It was found that 193 (74^2%) of 260 cases with rosacea were infected by Demodex and 209 (80^4%) of the patients were infected by bacteria. The overall effective rate of the treatment for rosacea was 73^5%. Conclusion Bacteria infection in rosacea is an important factor inducing rosacea. The curative effect of the anti_rosacea lotion is good.

Objective To observe the effect of ultrafiltrated components of three kinds of serum containing phlegm-resolving prescriptions (Huanglian Wendan Decoction, Gualou Xiebai Banxia Decoction, and Erchen Decoction, respectively) on viability of human leukemic monocytic cell line THP-1 derived macrophages and macrophage differentiation to foam cells. Methods THP-1 cells were induced to differentiate into macrophages with phorbol-12-myristate-13-acetate ( PMA) . And then the achieved macrophages were used for the establishment of the atherosclerotic foam cell model after co-incubation with oxidized low density lipoprotein ( ox-LDL ) . Three kinds of serum containing phlegm-resolving prescriptions and blank serum were prepared and ultrafiltered by 10 KD ultrafiltrator, and then were co-cultured with the foam cell model, respectively. The viability of macrophages and the macrophage differentiation to foam cells were tested by methyl thiazolyl tetrazolium ( MTT) assay and oil red staining. Apoptotic rate of macrophages was determined by flow cytometry. Results After THP-1 cells were induced by PMA (100 nmol/L) for 20 hours and then were co-incubated with ox-LDL (50 μg/mL) for 24 hours, a typical atherosclerotic foam cell model was established successfully. The ultrafiltrated components of serum containing Huanglian Wendan Decoction had obvious effects on increasing the macrophage survival rate, decreasing macrophage apoptotic rate, and inhibiting macrophage differentiation to foam cells. The ultrafiltrated components of serum containing Gualou Xiebai Banxia Decoction or Erchen Decoction had an effect on enhancing the macrophage differentiation to foam cells but had no anti-apoptosis action. Conclusion Huanglian Wendan Decoction has anti-atherosclerosis action, which may be related to resisting macrophage apoptosis and decreasing macrophagic lipid-endocytosing function. Erchen Decoction and Gualou Xiebai Banxia Decoction are effective on increasing macrophagic lipid-endocytosing function.

Objective To evaluate obstetrics and gynecology training quality by analysis of clinical knowledge and clinical skills scores for long-term graduates.Methods A retrospective analysis of clinical knowledge and clinical skills scores was performed in obstetrics and gynecology training for 134 long-term graduates.Results The clinical knowledge and clinical skills scores of obstetrics and gynecology training were 82.27?7.68,87.69?7.24.There was no,P﹥0.05.Only the scores of clinical skills judged by one teacher in interview was correlated with clinical knowledge scores,while there were no correlation between clinical knowledge judged by other five teachers and scores of clinical skills.Conclusion There was no correlation between clinical knowledge and the scores of clinical skills scores.Culturing students’practical ability and communication ability is worth strengthening,while the consistency of teachers’evaluation standard should be improved.

Adult ; Female ; Humans ; Lacrimal Apparatus ; immunology ; Lymphocytes ; immunology ; Male ; Mucous Membrane ; immunology

BACKGROUND:Arthroscopy can observe the involutive relation of patelofemoral joint directly and dynamicaly, which can be used to judge whether the patelofemoral joint abnormalities can be completely corrected. OBJECTIVE:To analyze the clinical effect of lateral retinacular release and ligament reconstruction under arthroscope for patela recurrent dislocation. METHODS: A total of 58 patients diagnosed as having recurrent patelar dislocations were divided randomly into control and experimental groups, with 29 cases in each group. Patients in the control group received lateral retinacular release and ligament reconstruction under common operation and those in the experimental group received lateral retinacular release and ligament reconstruction under arthroscopy. RESULTS AND CONCLUSION:There was no significant difference in the Lysholm and Kujala scores before treatment in the two groups (P > 0.05), but at 12 months after treatment, the Lysholm and Kujala scores were both increased in the two groups, especialy in the treatment group (P < 0.05). No difference was found in the congruence angle and lateral patelofemoral angle with CT value at 30° of knee flexion (P > 0.05), and CT measurement values of the congruence angle and lateral patelofemoral angle were both decreased in the two groups, especialy in the experimental group, at 12 months after treatment. In addition, the operation time, healing time, and total effective rate were better in the experimental group than the control group (P < 0.05). These results indicate that the lateral retinacular release and ligament reconstruction under arthroscopy has a better effect on recurrent patelar dislocation.

Objective To evaluate the efficacy and safety,particularly eye safety of hydroxychloro-quine(HCQ)treatment in primary Sj(o)gren's syndrome(pSS)patients.Methods Forty pSS patients were en-rolled and treated with HCQ 400 mg/day for 12 months.This is a prospective open-label study.Clinical mani-festations,clinical efficacy,biochemical and immunoserological parameters as well as ophthalmological exami-nations were investigated every three months to assess the safety and tolerability.Results There were signifi-cant decrease in the erythrocyte sedimentation rate(ESR),immunoglobulin G(IgG),immunoglobulin M (IgM)and rheumatoid factor(RF)level after 6 months treatment with HCQ(P＜0.01 or P＜0.05).No changewas detected in serum antinuclear antibody(ANA),anti-SSA/SSB antibodies after treated for 12 months.Somepatients had partial improvement in symptoms such as dry mouth,dry eyes and arthralgia.During the treat-ment,no significant effect on serum alanine aminotransferase (ALT),blood urea (BUN),serum creatinine (Cr),whole blood count(WBC)or hemoglobin(Hb)could be discovered.Central semus retinopathv(CSR)was found in one patient after 6 months treatment with HCQ.However,its association with HCQ could not be confirmed since it was not compatible with the usual HCQ retinopathy.Conclusion HCQ can improve svmp-toms of some pSS patients and can significantly decrease ESR,IgG,IgM and RF level.The safety profile of HCQ is generally good.However,ophthalmological examination before and after a 6-month interval may be necessary in long term HCQ treatment.