Breast cancer is one of reproduction-endocrine related tumors, so the risk factors including environmental and genetic factors which can disrupt anabolism and function of estradiol may increase the risk of breast cancer. Persistent environmental endocrine disruptor chemical (EDCs) can disrupt anabolism and function of endogenous hormone and the degree of disruption may depend on genetic polymorphism. EDCs and metabolic enzyme genetic polymorphism were discussed in this paper. To study the risk factors of breast cancer, both of the environmental factors and the genetic factors should be included.

Objective:To investigate the effects of dexmedetomidine on short-term prognosis in elderly patients with gastric cancer after laparoscopic radical gastrectomy.Methods:A total of 60 elderly patients with gastric cancer admitted to Shanxi Provincial Cancer Hospital from June 2018 to September 2019 were selected as the research objects. The patients were randomly divided into the observation group and the control group according to random number method, 30 cases in each group. All patients underwent laparoscopic radical gastrectomy. The patients in the control group received routine intravenous anesthesia, and the patients in the observation group were assisted with intravenous infusion of dexmedetomidine on the basis of anesthesia in the control group. The general situation during and after surgery, hemodynamics and postoperative delirium of patients in the two groups were observed and compared.Results:The anal exhaust time and hospitalization time in the observation group was shorter than that in the control group [(72±10) h vs. (79±13) h, t = 8.384, P = 0.031; (11.0±1.7) d vs. (12.9±1.9) d, t = 7.404, P = 0.022]. While the time of abdominal drainage was (8.4±2.8) d and (8.6±1.6) d, respectively in the observation group and the control group, and the difference was not statistically significant ( t = 0.958, P = 1.092); the volume of abdominal drainage was (534±50) ml and (545± 55) ml, respectively, and the difference was not statistically significant ( t = 0.847, P = 1.202). Compared with the preoperative baseline, the mean arterial pressure (MAP) in the two groups was stable during the operation. At extubation, the MAP in the control group [(104±5) mmHg, 1 mmHg = 0.133 kPa] was higher than that in the observation group [(92±7) mmHg] ( t = 7.383, P < 0.01); in the control group, the MAP at extubation was also higher compared with the preoperative MAP [(92±9) mmHg] ( P < 0.05). The heart rate in the observation group was lower than that before surgery and the same period in the control group.The incidence rate of delirium and suspicious delirium was 3% (1/30) and 7% (2/30) in the observation group, 10% (3/30) and 13% (4/30) in the control group within 7 d after surgery, and there were statistically significant differences in delirium and suspicious delirium between the two groups ( χ2 = 9.394, 7.485, all P < 0.05). Conclusion:Dexmedetomidine can reduce the incidence of delirium in elderly patients with gastric cancer after laparoscopic radical gastrectomy, and make the hemodynamics more stable and recovery faster.

Objective To study the potential effect of gene-environment interaction between glutathione S-transferase M1 (GSTM1) and serum organochlorines residues on the risk of breast cancer in women, in China. Methods Seventy newly pathologically diagnosed female patients with breast cancer from September 2006 to October 2007 were selected as the cases from five large hospitals in Tangshan. The controls were identified at the same hospital as cases. 1∶1 matched case-control study. Between the cases and controls, the difference of age was not over two years and the residence was similar. The organochlorine residues levels in the serum were measured by gas chromatography (GC). Genotypes of GSTM1 polymorphisms were analyzed by multiplex allele-specific polymerase chain reaction (PCR). Interaction indexes (?) were calculated to determine the type of gene-environment interaction. Results After confounding factors adjusted, the result showed that interaction existed in genetic polymorphisms of GSTM1 and DDT, HCH residues, and interaction indexes (?) value were 1.237 and 1.379. Conclusion GSTM1 genetic polymorphisms and DDT, HCH may present an interaction in the development of breast cancer.

In the light of requirements of medical equipment simulation system, the overall framework of joint control system of medical equipment integrated support in the theater is designed in this paper. Such modules are developed with Delphi as communication module, module for equipment basic information, module for equipment video information and module for medical faculty information. A joint control system suiting integrated support simulation sand table for medical equipment is complteted,which provides a multidimensional informational platform for integrated demonstration of medical equipment.

Objective To explore clinic manifestations and laboratory investgation of virus encephalopathy.Methods The clinical course,cerebrospinal fluid(CSF),hepatic dysfunction,computerized tomography of 7 cases treated in our hospital from October 1999 to March 2005 were retrospectively reviewed.Results Seven cases of virus encephalopathy were typically associated with a suddent onset of high fever,severe convulsion,rapidly progressive coma,marked elevations of alanine aminotransferase(AST) and aspartate transaminase(ALT).Four cases died,3 cases had severe sequelae.Blood ammonemia was normal,brain CT scans revealed peripheral or basal nuclei low-density areas.Conclusion Children with a sudden onset of high fever,severe convulsions,rapidly progressive coma may have a poor prognosis.

Objective To investigate the feasibility of laparoscopic radical gastrectomy for gastric cancer.Methods Laparoscopic radical gastrectomy was performed in 8 cases from Febrary 2005 to April 2005,including radical distal gastrectomy in 6 cases,radical total gastrectomy in 1 case,and radical proximal gastrectomy in 1 case.Results All the 8 patients underwent laparoscopic radical gastrectomy smoothly and no conversion to open surgery was required.The operation time was 340?62 minutes in radical distal gastrectomy,was 362 minutes in radical proximal gastrectomy,and 423 minutes in radical total gastrectomy.The intraoperative blood loss was 100～250 ml(mean,140 ml) in radical distal gastrectomy,300 ml in radical total gastrectomy,and 170 ml in radical proximal gastrectomy.No blood transfusion was needed.The number of havested lymph nodes was 18～37(mean,23).No surgical-related complications occurred.The time to first flatus was 38～56 hours(mean,42.4 hours),and the time to liquid diet was 2～5 days(mean,2.5 days).All the 8 cases were followed for 12～14 months postoperatively and no recurrence or metastasis was observed.Conclusions Laparoscopic radical gastrectomy is a feasible technique for patients with gastric cancer at early stage or early progressive stage.

Objective: To investigate the diagnostic value of 64 multislice spiral CT (64-MSCT) and 1.5T MRI in nurseling with congenital vascular rings.
Methods:We retrospectively studied the diagnostic records of 64-MSCT and 1.5T MRI in 48 nurseling with congenital vascular rings. There were 42 cases received CTA, 12 received MRA and 6 received both CTA and MRA. We classiifed the types of vascular rings by Edwards sketch map of aortic arch embryonic development and trachea wrapping conditions. The diagnostic values of 64-MSCT and 1.5T MRI on vascular rings were compared.
Results: There were 25 patients with complete vascular rings including 3 of double aortic arch, 12 right aortic arch with left subclavian artery and patent ductus arteriosus (PDA), 9 combining with arterial ligament, 1 neck right aortic arch with left subclavian artery combining left PDA;and 23 patients with in-complete vascular rings including 2 pulmonary artery sling, 9 left aortic arch with right subclavian artery combining left PDA, 10 combining with arterial ligament, 1 right aortic arch with left subclavian artery combining right PDA, 1 with innominate artery compressed trachea. There were 32/48 patients combined with cardiac malformations, both 64-MSCT and 1.5T MRI may well reveal the composition and special relationship of vessel rings. The minimum intensity projection (MinIP) and air volume rendering (VR) of 64-MSCT may clearly display the morphology and development of trachea, image fusion technique could directly show the special relationships among vascular rings, trachea and esophagus. While 1.5T MRI was relatively poor to present tracheal image.
Conclusion: 64-MSCT could accurately and comprehensively display the special relationships among the vessels rings, trachea and esophagus;which was the best method for diagnosing the nurseling with vessel rings in clinical practice.

ObjectiveTo observe effects of ginkgo bilobate extract injection on the hemorheology,blood lipid and c-reactive protein in serum of patients with cerebral infarction. Methods62 cases patients with cerebral infarction were randomly divided into two groups by means of random number table. Two groups were both given routine treatment. The control group was treated with 20ml compound salvia injection, which was added to 250 ml normal saline, once a day, continuous therapy for 14 days, and the treatment group was treated with 20ml ginkgo bilobate extract injection, which was added to 250 ml normal saline, once a day, continuous therapy for 14 days. The clinical symptoms were observed, hemorheology related index, level of blood lipid and c-reactive protein were detected before and after the treatment. ResultsCompared with the control group,hemorheology related index decreased significantly in the treatment group, especially whole blood viscosity ( 1.57±0.28) mpa ·s (P＜0.01). Blood reduced viscosity (13.95 ± 2.07) mpa ·s, erythrocyte aggregation index (1.37±0.12) , hematocrit (42.36±8.16) were also decreased significantly (P＜0.05) .Triglyceride (TG)(1.23±0.12) mmol/L、 cholesterol (TC) (4.29±1.17) mmtmol/L、 low density lipoprotein cholesterol (LDIL-C)(2.31± 0.39) mmol/L and c-reactive protein ( 10.48 ±- 3.82) mg/L in serum in the treatment group were lower than those of the control group (P＜0.01 orP＜0.05) , high density lipoprotein cholesterol (HDL-C) ( 1.78±0.76) mmol/L in serum was higher than that of the control group (P＜0.01) .The total effective rate of the treatment group and the control group was 87.1％ and 67.7％ respectively, there was a significant difference (x2=3.553, P＜0.05). Conclusion The ginkgo bilobate extract injection can protect cerebral infarction from injury,which may be related with its action on regulating the blood viscosity and level of blood lipid.

OBJECTIVE: To investigate the pathological features and significance of myocardial contraction band necrosis in sudden cardiac death. METHODS: Using HE and PTAH staining, the distribution sites and pathological features of myocardial contraction band necrosis were observed. The data were analyzed according to the extent of necrosis. RESULTS: The locations, pathological features and the extent of necrosis were similar in different sudden death cases. The locations were related with sites of myocardial damage. The papillary muscles of left ventricular were most occurred, followed by the anterior wall of left ventricular. In the sudden death cases caused by stress cardiomyopathy, the extent of myocardial contraction band necrosis was lighter than the others. Most cases were predominantly level 1, the others were level 2. CONCLUSION Used as the diagnosis basis of acute myocardial ischemia, the myocardial contraction band necrosis has important significance to determination of death.
Adult ; Aged ; Aged, 80 and over ; Coronary Disease/complications* ; Death, Sudden/etiology* ; Death, Sudden, Cardiac/pathology* ; Female ; Heart Diseases/pathology* ; Humans ; Male ; Middle Aged ; Myocardial Contraction/physiology* ; Myocardium/pathology* ; Necrosis

Bleomycin ; analogs & derivatives ; therapeutic use ; Embolization, Therapeutic ; methods ; Female ; Hemangioma ; therapy ; Humans ; Infant ; Iodized Oil ; therapeutic use ; Syndrome ; Thrombocytopenia ; therapy