Pancreatic cancer is the third leading cause of cancer-related death in the world due to its high malignancy, difficult in early diagnosis, poor treatment efficacy, and high mortality. In recent years, benefiting from the progress of combined chemotherapy and neoadjuvant therapy, the prognosis of patients with pancreatic cancer has been improved to a certain extent. However, compared with other tumors, progress of precision medicine in pancreatic cancer is slow. The authors introduce the latest progress and difficulties in precision medicine of pancreatic cancer including molecular classification based on single gene and omics, monitoring tumor progression and guide treatment by minimally invasive liquid biopsy, as well as targeting therapy and immuno-therapy, in order to accelerate the development of precision medicine of pancreatic cancer.

Breast Neoplasms ; diagnostic imaging ; radiotherapy ; Female ; Humans ; Imaging, Three-Dimensional ; Mastectomy, Segmental ; Postoperative Period ; Radiotherapy Planning, Computer-Assisted ; methods ; Respiration ; Surgical Instruments ; Tomography, X-Ray Computed ; methods ; Tumor Burden

Adult ; Breast Neoplasms ; diagnostic imaging ; radiotherapy ; surgery ; Cone-Beam Computed Tomography ; Female ; Humans ; Mastectomy, Segmental ; Postoperative Period ; Radiotherapy Planning, Computer-Assisted ; methods ; Respiration

Animals ; Apoptosis ; Bradykinin ; metabolism ; Bradykinin Receptor Antagonists ; Ischemia ; metabolism ; Ischemic Preconditioning ; Muscle, Skeletal ; blood supply ; metabolism ; pathology ; Myocardial Infarction ; metabolism ; Myocardium ; pathology ; Swine ; Swine, Miniature

AIM: To study the infiltration of polymorphonuclear neutrophils ( PMNs ) after conjunctival flap covering in alkali-burned cornea.
●METHODS: Rabbit cornea alkali-burned model was made, then 50 rabbits were randomly divided into the experimental group ( n=25 ) and the control group ( n=25 ) . At the same time the surgery of conjunctival flap covering was given to rabbits of the experimental group. The condition developing of alkali-burned cornea was observed by slit lamp biomicroscopy, and took photos in two groups. The infiltration of PMNs was identified by hematoxylin eosin ( HE) staining in different periods.
●RESULTS:The quantity of PMNs increased on the 3d, reached the lower level on 7d, shown a peak on the 14d, then decreased gradually. PMNs level of the experimental group was significantly lower than that in the control group, and the difference of 3, 14 and 21d was significant (P<0. 05).
●CONCLUSION: During the wound healing process, alkali - burned cornea has close relation with the infiltration of PMNs. The treatment of conjunctival flap covering for the severe alkali-burned cornea was found to have good effect.

Objective To survey the epidemiological situation of asthma in remission stage in Liaoning province,and provide evidence for preventing and treating asthma.Methods 800 patients of asthma in the remission stage were investigated through the questionnaire investigation.Results Onset age of asthma in Liaoning province was 30～40 years old.The sex ratio between male and female was 1 ∶ 1.34.The number of staff was the highest (25.75％).Most of the course of asthma was 1～5 years (33.50％).The number of patients who often receive treatments was 59 (7.38％)and the number of patients with allergy history was 531 (66.38％).Conclusion Prevention,management and treatment of asthma should be strengthened.

Objective To explore the effects of coincident infection on treatment response and coronary artery lesion (CAL) outcome in children with Kawasaki disease(KD).Methods A retrospective study of 141 children diagnosed on KD between Jul.2005 and Dec.2006 were performed.Standardized clinical assessments,laboratory examinations microbiology test results plus treatment regimens were reviewed.CAL were visualized by using echocardiography.Infectious agents positive (INF+) and negative (INF-) groups were identified,and clinical assessments,laboratory and treatment data were analyzed.Results 1.Concurrent infections:41%(58/141) of children had one of above confirmed infection at KD diagnosis.2.Treatment response:the presence of infection did not alter the response to treatment with intravenous immunoglobulin (IVIG),with resolution of fever within 72 h in 85% (120/141) children after 1 dose of IVIG (2 g/kg) together with aspirin administration regardless of present or absent infection.3.CAL outcome:in total,56.0% (79/141) of children developed CAL at the time of diagnosis,involving dilatation (91.1%,72/79 cases) and aneurysm (8.9%,7/79 cases),and no giant aneurysm was found.Most CAL were recovered within 1 year after treatment.Incidence of aneurysm in INF+ group was significantly higher than that in INF-group (P=0.019).Conclusions Coincident infection would not affect on the clinical assessment,laboratory test results and treatment response to IVIG in children with KD,but would result in higher risk of serious CAL.Therefore,children with infection at diagnosis on KD will not only accept active treatment in acute phase,but also insist on convalescent care and follow-up visit.

Objective To approach the effect of fluoride on the expression of thyroid peroxidase(TPO)activity and TPO mRNA in primary porcine thyrocytes.Methods Purified cultured porcine thyrocytes waft made into sodium fluoride model,and were divided according to the final concentration of NaF into 0(control group),40,80,160 mg/L.After exposed to NaF for 48 h,the morphology of the porcine thyrocytes was investigated with acridine orange staining method,TPO activity was measured with upgrade guaiacol method and RT-PCR method was used to detect the ratio of TPO/β-actin.Results The major changes included apoptotic bodies and cell fragments in the 80,160 mg/L groups under phase contrast microscope.With the increasing dose of fluoride.TPO activity,being(3.103±0.090),(1.944±0.025),(1.361±0.008),(0.668±0.026)U/L,respectively,had obviously lowered with a statistical significance compared between the groups(F=1563.864,P＜0.05).The TPO activity had a negative correlation with the dose of fluoride(r=-0.955,P＜0.05).With the dose of fluoride increasing,the expression of TPO mRNA had obviously lowered,being(0.947±0.013),(0.634±0.018),(0.448±0.028)and (0.210±0.009)with a statistical significance in group comparison(F=2713.855,P＜0.05).Conclusion Fluoride affects the thyroid via inhibiting TPO activity and expression of TPO mRNA.

Objective To investigate the prevalence of nutritional risk,undemutrition,overweight/obesi-ty,and apphcation of nutrition support in departments of neurology in 3 metropolitan hospitals in Beijing. Methods Adult patients in the departments of neurology from 3 metropolitan hospitals in Beijing were consecutively en-rolled from March 2005 to March 2006.Nutritional Risk Screening 2002(NRS2002)score≥3 was defined a8 nu-tritian risk,while body mass index(BMI)<18.5 ks/m2 as undemutrition.NRS2002 was performed on the next morning of admission and nutritional support evaluation was performed on the 14th day of admission or discharge day.The relationship between nutrition risk and nutrition support was analyzed.Results A total of 753 patients were enrolled.NRS2002 scoring results were obtained in 461 patients.The prevalence of undemutrition was 4.2%and nutritional risk Was 21.2%.Among them 292 cases in undemutrition category were estimated by semm albu-min<30g/L without accurate BML If the cases without accurate BMl were excluded,the prevalence of undemutri-tion was 5.4%and nutritional risk Was 10.8%.Twenty-three patients(14.4%)with NRS2002≥3 received nutrition support.Thirteen patients(2.2%)with NRS2002<3 received nutrition support.The average PN:EN ratio Wag 1:2.Conclusions A large proportion of inpatients were at nutritional risk or undemutrition in the de-partments of neurology in metropolitan hospitals in Beijing.The application of nutrition support Wag somehow inap-propriate in these patients.Evidence-based guidelines are required to improve this situation

Objective To study the expression characteristics of Let-7 genes in breast cancer.Methods Twenty-eight patients with breast cancer were randomly selected,and their cancer tissue and adjacent normal tissue were collected.TRIzol was used to extract the total RNA and real-time quantitative PCR was used to detect the relative gene expression levels.Results The expression of precursor Let-7 in cancer tissue was (9.65 ± 2.31),which was lower than that in normal tissue (10.05 ± 2.81),P =0.048.Precursor Let-7 had dependence relationship with the long menstruation (b =0.816,P =0.029).The menarche age showed a positive correlation with precursor Let-7 in normal tissue (r =0.502,P =0.048) and a negative correlation in cancer tissue (r =-0.484,P =0.049) Conclusions The expression of precursor Let-7 in cancer tissue is lower than that in normal tissue.The period of menstruation is a protective factor to breast cancer.