[Objective]To investigate the biomechanical effect of mid-upper fibular fracture on ankle joint.[Method]From January 2005 to June 2006,20 cases of mid-upper fibular fracture were collected.Normal anterior film of bilateral ankle joint was photographed,ankle mortise width and distal fibula upper shift were measured to observe the effect on stability of ankle joint.Foot-scan pressure analyzer was used to detect the central track of footplate pressue,subtalar joint angle,in order to compare the difference between normal ankle and the sick.[Result]Dislocated mid-upper fibular fracture could lead to ankle mortise widening,lateral malleolus up shift ( averaged,1.260?0.339mm,1.045?0.276mm).the central track of footplate pressure offset and the fracture sides subtalar joint angle were larger than those in normal feet(P

Objective To explore whether low-dose occupational ionizing radiation exposure can affect the prevalence of lens opacity.Methods Annual occupational health checkup data of 1 007 radiation workers was taken from a provincial medical institution for the purpose of statistical analysis.Logistic regression analysis was used to estimate occupational exposure odds ratios (OR) of lens opacity,adjusted for age,gender and length of service.Eye lens opacity was grouped into cortical,nuclear and posterior subcapsular opacity according to the position of the opacity occurrence site.Opacity occurred in any one of the both eye lens was recorded as turbidity.Results Only 730 cases coupled with complete information could be used in the statistical analysis.The rate of lens opacity for all the radiation workers was 10.27％.The rates of lens opacity by exposure group were estimated to be 9.07％ for radiation diagnosis and therapy group,11.11％ for intervention group,18.18％ for nuclear medicine group,and 9.33％ for industrial application group,respectively.Compared with those in the radiation diagnosis and therapy group,the workers engaged in intervention medicine,or nuclear medicine,were more likely to suffer from the lens opacity in posterior subcapsular position.The OR and its 95％ confidence intervals were 3.00 (1.23-7.33),4.12 (1.68-10.11) for the workers in intervention medicine or nuclear medicine group.Conclusions Medical radiation workers,who were exposed to long-term low-dose of ionizing radiation,especially those who engaged in intervention or nuclear medicine,were at significantly higher risk to develop lens opacity.

Through analyzing the problems of time,selection mode,research plan,and tracking review in the ethical review of scientific research projects,this paper put forward the corresponding countermeasures:standardized application procedures,diverse selection mode,standardized research plan,and strict tracking review.It aimed to improve the quality of ethical review of scientific research projects and improve the ethical review system.

Objective Lipid metabolism disorder can lead to male sterility, but its mechanism of affecting spermatogenesis and testis microenvironment remains unclear.This study aimed to investigate the effects of high fat diet on reproductive function and the expression of Ox-LDL within testis in male mice. Methods 16 C57BL/6 mice aged 8 weeks were divided into two groups by random number table method.High fat diet group was fed with high fat diet while normal fat diet group was fed with normal fat diet .At the end of 16 weeks, the levels of TG, TC, Ox-LDL and testosterone in serum were measured.The sperm concentration and motility from caudal epi-didymis were analyzed.The testis structure was observed by HE stai-ning.The localization and expression of Ox-LDL in testis were detec-ted by immunohistochemical technique. Results Compared with the normal diet group mice, the body weight (P<0.05) and the ser-um levels of TC [(2.31 ±0.33)mmol/L vs (6.54 ±0.31)mmol/L, P<0.01], Ox-LDL [(0.32 ±0.03)mg/L vs ( 0.44 ±0.06)mg/L, P<0.01] increased in high fat diet group mice significantly.The serum level of TG was of no significant difference(P>0.05).The serum level of testosterone[(3.64 ±0.43)mg/L vs (0.40 ±0.14) mg/L, P<0.01], the sperm concentration[(9.95 ±0.75)106/mL vs (5.66 ±1.51)106/mL, P<0.01] and the sperm motility[(54.69 ±17.84)%vs (32.48 ±5.80)%, P<0.01] decreased in high fat diet group significantly.HE staining also showed that the amount of Leydig cells, spermatids and spermatozoons reduced obvi-ously in high fat diet group.Immunohistochemistry staining showed that Ox-LDL was mainly distributed around Leydig cells of mice tes-tis.The expression of Ox-LDL in high fat diet group increased significantly ( P<0.01) . Conclusion The expression of Ox-LDL in Leydig cells of high fat diet C57BL/6J mice increases significantly, which may inhibit testosterone biosynthesis and affect spermatogen-ic function.

Since the Beijing health and family planning commission promulgated the new medical technology management system,we have accepted and reviewed 14 key medical technologies in Beijing,such as resection of the skull base tumor (intracranial tumor outside communication),resection of intracranial important functional areas and large vascular malformation,renal vascular reconstruction technique,the technique of artificial joint replacement,coronary interventional diagnosis and treatment technology,etc.Through the existing laws and regulations requirements from medical new technology,the ethical review way,submit materials requirements and ethical review focus is analyzed,and combining with the experiences of our hospital in the medical technical review,aims to explore suitable for medical technology ethical review specification.

Natural products are great treasure troves for the discovery of bioactive components.Current bioassay guided fractionation for identification of bioactive components is time-and workload-consuming.In this study,we proposed a robust and convenient strategy for deciphering the bioactive profile of natural products by mass spectral molecular networking combined with rapid bioassay.As a proof-of-concept,the strategy was applied to identify angiotensin converting enzyme(ACE)inhibitors of Fangjihuangqi decoction(FJHQD),a traditional medicine clinically used for the treatment of heart failure.The chemical profile of FJHQD was comprehensively revealed with the assistance of tandem mass spectral molecular networking,and a total of 165 compounds were identified.With characterized constituents,potential clinical applications of FJHQD were predicted by Bioinformatics Analysis Tool for Molecular mechANism of Traditional Chinese Medicine,and a range of cardiovascular related diseases were significantly enriched.ACE inhibitory activities of FJHQD and its constituents were then investigated with an aggregation-induced emission based fluorescent probe.FJHQD exhibited excellent ACE inhibitory effects,and a bioactive molecular network was established to elucidate the ACE inhibitory profile of constituents in FJHQD.This bioactive molecular network provided a panoramic view of FJHQD's ACE inhibitory ac-tivities,which demonstrated that flavones from Astragali Radix and Glycyrrhizae Radix et Rhizoma,saponins from Astragali Radix,and sesquiterpenoids from Atractylodis Macrocephalae Rhizoma were principal components responsible for this effect of FJHQD.Among them,four novel ACE inhibitors were the first to be reported.Our study indicated that the proposed strategy offers a useful approach to un-cover the bioactive profile of traditional medicines and provides a pragmatic workflow for exploring bioactive components.

Objective:To investigate the late effects induced by external ionizing radiation through long-term follow-up of the victims exposed to 60Co radiation source at " 4.26" accident in Henan in 1999, and to provide valuable experience in the radiological medicine. Methods:Medical observations of the clinical symptoms, signs, eye lens examination and previous medical history of the five exposed victims were performed and recorded. The changes of the laboratory routine examinations, immune function, thyroid function, reproductive hormone levels, tumor markers, radiation genetic indicators as well as ultrasound examination of thyroid, cardiac, reproductive system, electrocardiogram, chest CT were systematically reviewed.Results:The typical radiation-induced cataract was found in " Mei" 2-3 years after 60Co accidental irradiation. 13 years after irradiation, the cataract surgery and intraocular lens implantation in left eye were performed followed by the same operation in right eye in November 2019. Different degrees phacoscotasmus under the posterior capsule or equatorial part of the eyes were also found in the rest of victims. ECG result of " Mei" indicated myocardial ischemia 7 years after accident. " Tian" confirmed diagnosis coronary heart disease 12 years after irradiation, and the surgery about coronary angiography heart stent implantation was taken at 20 years after irradiation. Five victims showed increased serum total cholesterol and/or triglycerides, and 4 victims showed bilateral or unilateral common carotid atherosclerotic plaque formation. Higher levels of thyroid stimulating hormone (TSH) were observed in " Mei" at 11 years after the irradiation. The thyroglobulin antibody (TGA)and thyroid microsomal antibody (TMA) were obviously increased in " Yi" , accompanied by thyroid uneven found by ultrasound. The thyroid nodules in " Mei" and " Min" were observed at 15 years after irradiation. The diagnosis of diffuse large B cell lymphoma(DLBL) in " Tian" was confirmed at 13 years after irradiation. Slightly higher of Neuron-specific enolase(NSE) were found in " Tian" , " Min" and " Yi" . A small nodule was detected from chest CT of " Tian" . Most of the chromosome aberrations observed in peripheral blood lymphocytes from the victims were stable chromosomal aberration such as translocation (t) with a few dicentric chromosome (dic) and acentric fragment (ace) in " Wang" and " Tian" . Conclusions:Ionizing radiation can cause variable degrees of deterministic effects in lens, thyroid gland and cardiovascular circulatory system and stochastic effects such as neoplasm. The genetic damages will last long in the patients.

Objective:This study aimed to analyze differential metabolites in patients using a dual metabolic platform and to orientate early nutritional intervention in patients with cirrhosis.Methods:The skeletal muscle index (SMI) was calculated based on computed tomography (CT) measurements of skeletal muscle cross-sectional area at the third lumbar vertebra level. Pre-sarcopenia was diagnosed for males with SMI < 46.96 and for females with SMI < 32.46. Fifteen HBV-related liver cirrhosis patients with pre-sarcopenia were included as Group S while fourteen liver cirrhosis without pre-sarcopenia were Group NS. Liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS) analyses were used to detect differential metabolites and disturbed pathways in the two groups.Results:Five pathways and twenty-eight pathways were defined as disturbed pathways in the plasma of liver cirrhosis patients with pre-sarcopenia by LC-MS and GC-MS, respectively. Most of these pathways are related to amino acid metabolism. Forty-two differential metabolites were imported into the disturbed pathways. Moreover, 3-hydroxypropanal, hydrocinnamic acid, betaine aldehyde, phosphohydroxypyruvic acid, (r)-3-hydroxybutyric acid, and creatinine were identified as potential biomarkers for pre-sarcopenia in HBV-related liver cirrhosis.Conclusions:The study identified a total of 33 pathways and related differential metabolites that were disturbed in HBV-related liver cirrhosis with pre-sarcopenia. The amino acid metabolism, urea cycle, and glyoxylate and dicarboxylate metabolism pathways may be associated with pre-sarcopenia in patients with HBV-related liver cirrhosis. These results provide a direction for nutritional supplementation in liver cirrhosis.

The particularity of children's physiology and pathology determines that doctors should pay special attention to nursing in the process of treating pediatric diseases. This article discussed the dosage form and taking characteristics of pediatric prescriptions in Tai Ping Sheng Hui Fang from the aspects of dosage form and quantity, decoction, dosage, temperature, time, frequency and degree. It has been concluded that Tai Ping Sheng Hui Fang is rich in dosage forms, both internal and external treatment; paying attention to the care of the spleen and stomach, taking medicine in a light and specialized manner, and emphasizing the end of the disease; the way of taking medicine conforms to the physiological and pathological characteristics of children.

Objective:To investigate Helicobactor pylori (H. pylori) infection status and interfamilial transmission pattern in Zhengzhou area. Methods:A cross-sectional study was conducted from September 2020 to march 2021, among 731 individual from 266 families randomly selected from 9 communities of Zhengzhou area. H. pylori infection status was determined by serum antibody tests, and 13C-urea breath test was performed in the previously eradicated population to clarify the current infection status. The individual and familial infection rate, infection status for couples and children and adolescent were analyzed. Results:Among 731 individuals from 266 families, 397 of them were H. pylori positive. The individual infection rate was 54.31% (397/731); among infected individuals 77.83% (307/397) were infected with type Ⅰ strain, 22.67% (90/397) were infected by type Ⅱ strain. Annual household income ( χ2=0.419, 0.410, 0.213, all P>0.05), smoking history (χ 2=0.071, P>0.05), drinking history ( χ2=0.071, P>0.05), dining place ( χ2=0.009, P>0.05), gastrointestinal symptoms ( χ2=0.047, P>0.05), family history of gastric disease ( χ2=0.069, P>0.05), and history of gastric cancer ( χ2=0.004, P>0.05) had no significant differences between H. pylori-positive and -negative groups, but the infection rate in individuals with higher education level was lower ( χ2=4.449, P<0.05). The infection rate was significantly higher in≥18 age groups compared with<18 age groups ( χ2=6.531, 23.362, 20.671, 24.244, 37.948, 14.597 and 5.170, all P<0.05). The familial H. pylori infection rate was 87.59% (233/266), and in 61 families all member were infected (26.18%, 61/233). The positive rate was 23.08% (6/26) in 50 families with children under 18 years when both parents were infected. Among 231 coupled families, both couples were infected in 78 families (33.76%), one couple was infected in 113 families (48.92%), and both couples were not infected in 40 (17.32%). With the increase of marriage time, the infection rate of both spouses increased significantly ( χ2=7.775, 12.662, 15.487, all P<0.05). Conclusions:The distribution of H. pylori infection presents a family cluster pattern, and intrafamilial infection is an important transmission rout of H. pylori. The type I strain of H. pylori is the dominate strain in this area.