Raman spectroscopy is an optical technology based on the theory of Raman scattering, which is generally used in the research of medical and biological science. Raman spectroscopy can be used to detect the molecular structures and components of proteins, lipids, DNA, and other biological molecules, and provide substantial information about molecules. Thus, Raman spectroscopy is generally considered a "molecular fingerprint", and it has exceptional advantages in medical research. Moreover, this technique can reflect the changes in molecular structures and detect the alterations of chemical constituents in the samples. Raman spectroscopy, given its high sensitivity and specificity in the detection of the biological samples, has been successfully used to detect and diagnose diseases in numerous sites, such as skin, oral mucosa, breast, head, and neck. In this paper, we introduce the application of Raman spectroscopy in stomatology by conducting a review of the literature.
DNA ; Lipids ; Oral Medicine ; Proteins ; Sensitivity and Specificity ; Spectrum Analysis, Raman

Objective To assess the feasibility and advantage of systematic transperineal ultrasound guided template prostate biopsy. Methods In a prospective study, a total of 1270 patients(26 -90 year old,mean age 70. 4) who met the inclusion criteria underwent 11 regions systematic transperineal ultrasound guided template prostate biopsy. The median PSA level was 12. 96 ng/ml(range 0. 25000. 0 ng/ml) and the mean prostate volume was 53. 6 ml(range 7-200 ml). Results Prostate cancer was detected in 486 of 1270(38. 3%). The prostate cancer detection rate in group with PSA 0-4.0, 4. 1-10. 0, 10. 1-20. 0, 20. 1-40.0, 40. 1-60.0, 60. 1-100.0、and> 100. 0 ng/ml groups was 21.9%(16/73 )、16.6%(67/ 403)、30.7% (122/397)、46. 7%(77/165)、68. 3%(41/60)、86.2% (46/54) 、99.2% (117/118), respectively . While cancer detection rate in group with prostate volumes less than 20, 21-40, 41-60, 61-80 and great than 80 ml was 72. 1%(49/68 )、55. 6%(234/421) 、32.5%(136/418)、23.3%(48/206)、12. 1%、(19/157). The mean positives for the cancer of regions 1- 10 and region 11 (the apical region) were 35.3% vs. 44.8% in patients whose PSA＜20ng/ml(P＜0. 05). The positives for cancer within the right lobe and left lobe were 70. 8% vs. 74.2%(P>0.05)and the positives for cancer within the anterior and posterior parts were 79. 4% vs. 86. 8%(P>0. 05). No serious complication occurred during the procedure. Conclusions Systematic transperineal ultrasound guided template prostate biopsy could be accurate and safe. Prostate carcinoma foci are more frequently localized in the apical region in patients with PSA ＜20 ng/ml. Special attention should be paid to the apical region during the process of biopsy.

Objective To analyze the clinical effect of atorvastatin combined with conventional cardiovascu-lar drugs therapy in treatment of coronary heart disease.Methods 200 patients with coronary heart disease were col-lected.They were randomly divided into the observation group(n =100)and control group(n =100).The observation group was given atorvastatin combined with cardiovascular routine treatment for 1 year,the control group was given cardiovascular routine therapy for 1 year.The clinical effect and serum levels of TC,HDL -C,LDL -C were ana-lyzed.Results After treatment,the total effective rate of the observation group was 95%,which was significantly higher than 75% of the control group (χ2 =16.33,P =0.00 <0.05).According to the gender stratification,the effec-tive rates of the observation group were higher than the control group in men and women (men:96% vs 80%,χ2 =6.35,P =0.04 <0.05,women:94% vs 70%,χ2 =10.08,P =0.00 <0.05).Before treatment,there were no signifi-cant differences between the two group about the serum levels of TC,HDL -C,LDL -C[TC:(6.49 ±0.42)mmol/L vs (6.53 ±0.51)mmol/L,t =1.28,P =0.10 >0.05;HDL -C:(1.35 ±0.23)mmol/L vs (1.29 ±0.32)mmol/L, t =1.51,P =0.15 >0.05;LDL -C:(4.54 ±0.62)mmol/L vs (4.48 ±0.61)mmol/L,t =0.84,P =0.20 >0.05]. After treatment,the serum levels of TC,HDL -C,LDL -C of the observation group were significantly better than those of the control group[TC:(3.39 ±0.31)mmol/L vs (5.78 ±0.64)mmol/L,t =2.36,P =0.02 <0.05;HDL -C:(1.63 ±0.42)mmol/L vs (1.32 ±0.51)mmol/L,t =2.87,P =0.00 <0.05;LDL -C:(2.37 ±0.42)mmol/L vs (3.95 ±0.43)mmol/L,t =2.62,P =0.01 <0.05].Conclusion Atorvastatin can reduce blood fat,improve the prognosis of disease,it is superior to the traditional treatment.

Objective To understand the protection knowledge and practice to cope with common respiratory infection in senior middle school students in Chengdu ,and to provide basis for carrying out school health education and the establishment intervention model of respiratory infection .Methods A self-administered questionnaire was conducted among 2 237 senior one students in two senior middle schools in Chengdu .Results In terms of basic knowledge of common respiratory diseases ,47 .47% of the students had adequate total awareness scores .Respiratory diseases cognitive knowledge was not comprehensive enough .Especially for the under-standing of certain knowledge ,there was misunderstanding .The awareness rates for prevention of respiratory diseases and the treat-ment of behavior were high ,and they were 87 .54% and 71 .43% ,respectively .Conclusion The senior middle school students in Chengdu have some education demand of respiratory disease ,and schools should strengthen publicity and health education .

Objective The purpose of this study was to improve the clinical results of the treatment firearm injury to maxillofacial-cervical region, so as to raise the life quality of these patients. Methods Based on the study of the anatomical study of this region, different methods were adopted to reconstruct various maxillofacial-cervial firearms injuries. Three methods were adopted to reconstruct the mandibular region by early bone transplantation to the defects of the mandible in diffferent regions. In patients with combined defects of the mandible and soft tissue, the defects were repaired by transplantation of vascular pedicle graft with muscle and nerve or free tissue transplantation to restore function. Results The survival-rate of early bone transplantation was 91.52%(54/59). The rate of function restoration was 90.72%(88/97) in cases of tissue flap grafting. Conclusions Applied anatomy is the basic of design new surgery method. Tne new developed surgery methods can improve clinical cured effect of maxillofacial-neck region firearms injure.

The paper first analyzes the current status of and existing problems with the management personnel in domestic third-tier hospitals and expounds from such angles as work motives, knowledge structure and personality the necessary qualities that hospital management personnel should possess. Then it argues on the basis of analyses from such perspectives as methodology, disciplinary system development and macro policy environment that only through appropriate training in hospital management can the current status of the management personnel in domestic hospitals be changed, the professional advancement of the management personnel in the third-tier hospitals be genuinely realized, and the support and impetus for maintaining the competitiveness of domestic third-tier hospitals in the medical market be provided.

Objective To explore the efficacy of low dosage of olanzapine combined with fluoxetine in the treatment of depression.Methods A 8-week study was conducted in 130 patients met the diagnostic criteria for de- pression.Subjects were randomly assigned to two groups:fluoxetine(20mg/d)alone and olanzapine(2.5～5 mg/d) plus fluoxetine(20mg/d).They were evaluated with Hamilton depression scale(HAMD).Hamilton anxiety scale (HAMA)at baseline,the 1 week,2 weeks,4 weeks and 8 weeks subsequently.Results(1)There were significant differences in the total scores and reduction rates of HAMD between two groups in every interview.(2)The combi- nation group had greater reduction in depressive and anxiety symptoms than that in fluoxetine group.(3)The re- sponse rate in combination group was higher than that of fluoxetine group in 1 week,2 weeks and 4 weeks.There were no significant differences in response and remission rate between combination group and fluoxetine group.Con- clusion The combination of olanzapine with fluoxetine demonstrated a rapid,effective antidepressant action.

Objective To understand the distribution and drug resistance of pathogens causing catheter related bloodstream in‐fection (CRBSI) to provide reference for clinical treatment .Methods The distribution and drug resistance of pathogens isolated from the central venous catheter from January 2011 to June 2015 were retrospectively analyzed .Results Among 731 submitted samples ,38 cases were CRBSI ,with the positive rate of 5 .3% ,in which ,the Gram‐positive cocci accouted for 26 .3% of isolated bacteria and dominated by Staphylococcus epidermidis (13 .2% ) ,moreover which was MRSE .MRSA and VRE were not detected . Gram‐negative bacilli accounted for 73 .7% of isolated bacteria and dominated by Acinetobacter baumannii (42 .1% ) ,which was most sensitive to amikacin with the sensitivity rate of 87 .5% .Conclusion Acinetobacter baumannii is most common pathogen in CRBSI with serious drug resistance ,therefore the operating should be standardized in clinical work for controlling infection .

Objective To investigate the inhibitory effect of cryptotanshinone on different maturation stages of Staphylococcus epidermidis (S.epidermidis) biofilm.Methods The biofilm model of S.epidermidis was constructed in vitro, the timing of adhesion, accumulating, and maturation was determined;matrix quantity, bacterial metabolism, microstructure of biofilm were detected with semi-quantitative adhesion test, XTT assay, and scanning electron microscope(SEM) respectively.Results The timing of adhesion, accumulating, and maturation of S.epidermidis biofilm were 6h, 24h,and 48h respectively;in adhesion period, cryptotanshinone at the concentration of 128μg/mL and 32μg/mL could both obviously reduce the matrix and kill bacteria inside biofilm, difference was statistically significant(P<0.05),inhibitory effect of 128μg/mL cryptotanshinone was better than 32μg/mL (P<0.05), the microstructure was destroyed by both concentrations.During accumulating and mature period, only cryptotanshinone at 128μg/mL could reduce the matrix of biofilm and kill bacteria inside biofilm (P<0.05), the microstructure was damaged by cryptotanshinone at concentration of 128μg/mL, while 32g/mL of cryptotanshinone had no obvious inhibitory effect(P>0.05).Conclusion Cryptotanshinone has a certain inhibitory effect on different stages of S.epidermidis biofilm, and there is a certain dose effect.

AIM: To investigate the refractive distribution and analysis risk factors for aircrew ametropia.
METHODS: The number of 49 cases with ametropia from 1031 aircrew during May 2013 to May 2014 were reviewed. Various types of refraction composition, age, type, position, time of flight with the subjective assessment of aircrew were analyzed and compared.
RESULTS:Of 49 cases, 43 cases (88%) were myopia, 6 cases ( 12%) were hypermetropia. , Detection rates were higher in age over 50 years aircrew and flight time more than 3000h. Detection rates were lower in self-conscious symptom heavy aircrew, fighter aircrew and good habit of using eyes.
CONCLUSION: The myopia incidence in aircrew with age >50 years and long flight time is higher, than that of fighter pilots and good habit of using eyes. We should pay attention to the increasing late-onset myopia of aviators and habit of using eyes, work intensity and time of using eyes about aircrew.