From the beginning of 1980 to the end of 1992, 125 patients with Cushing disease were undergone transsphenoidal microsurgery. 41 patients were operated by selective adenoma resection and 62 patients by radical surgery. 103 cases were available to be analyzed. The results of a long-term follow-up showed: (1) The cure rates were 63. 1% and 48.1% with positive and negative pathological study, respectively. (2) The cure rates were 72.6% and 41. 5% with radical and selective surgery respectively. In cured patients the plasma cortisol level dropped to normal or subnormal within 48 hours after the surgery. However, in uncured patients, it was still above the normal. After operation, 1. 6% of cases (1/60) had secondary hypothyroidism and 62.5 % of cases (30/48) who had abnormal menstruation preoperatively restored normal menstrual cycle. The recurrent rate was 11.4%. Conclusion: (1) The outcome of radical surgery is better than the selective adenoma resection; (2) The pathological study and the analysis of the plasma cortisol level within 48 hours after the surgery may have predictive value for efficacy of the surgery.

OBJECTIVE:To study the alleviation effect of nervonic acid on movement disorder of model mice with Parkinson's disease(PD). METHODS:Mice were randomly divided into blank control group(normal suline),model group(normal saline), Levodopa and benserazide hydrochloride tablet group (positive control,calculated by L-dopamine 120 mg/kg),nervonic acid low-dose,medium-dose,high-dose groups(20.0,40.0,80.0 mg/kg),10 in each group. Except for blank control group,mice in other groups were inducced for PD models. After modeling,mice were intragastrically given relevant medicines,once a day,for 14 d. After the last administration,behavioral changes of mice in each group were observed. HPLC was conducted to detect dopa-mine(DA)and its metabolites dihydroxybenzoic acid(DOPAC),homovanillic acid(HVA)concentrations in the striatum of mice. RESULTS:Compared with blank control group,climbing time was extended in model group,drum time was shortened,spontane-ous movement times was decreased,and DA,DOPAC,HVA contents in the striatum were reduced (P<0.05). Compared with model group,climbing time was shortened in Levodopa and benserazide hydrochlo ride tablet group,nervonic acid dose groups, drum time was extended,and DA,DOPAC,HVA contents in the striatum were increased(P<0.05);and spontaneous movement times was increased in Levodopa and benserazide hydrochloride tablet group,and nervonic acid high-dose group(P<0.05). CON-CLUSIONS:Nervonic acid can effectively improve symptoms of movement dysfunction of model mice with PD. The mechanism may associate with increasing DA content in the striatum.

OBJECTIVETo explore the relation between genetic polymorphisms of NQO1, GSTT1 and risks of chronic benzene poisoning (BP).

METHODSA case-control study was conducted. 152 BP patients and 152 workers occupationally exposed to benzene without poisoning manifestations were investigated. Polymerase chain reaction (PCR), denaturing high-performance liquid chromatography(DHPLC) and sequencing were used to detect the single nucleotide polymorphisms(SNPs) of the promoter and complete coding-region of NQO1 gene. Multiple PCR was used to detect GSTT1 genotype.

RESULTSIn smoking population, there was 7.73-fold (95% CI: 1.71-34.97, P = 0.010) of risk in BP subjects carrying NQO1c. 609 T/T genotype, compared with those carrying C/C and C/T. genotype. In drinking population, the individuals carrying the 6th extron of NQO1c. 609 T/T homozygote genotype had a 11.00-fold(95% CI: 1.89-63.83, P = 0.005) risk of BP compared to those with NQO1c. 609 C/T and C/C genotypes.

CONCLUSIONThe subjects carrying NQO1c. 609 T/T genotype and together with the habit of smoking or drinking may be more susceptible to BP.

Benzene ; poisoning ; Case-Control Studies ; Ethanol ; adverse effects ; Genotype ; Glutathione Transferase ; genetics ; Humans ; NAD(P)H Dehydrogenase (Quinone) ; genetics ; Occupational Diseases ; genetics ; Occupational Exposure ; Polymorphism, Single Nucleotide ; Smoking ; adverse effects

Through the development of the guidance for case handling of radiological health law enforcement, health supervisors are instructed to accurately grasp the key points of law enforcement and case handling and standardize the process of collecting evidence and law application to ensure the correct implementation of administrative penalty. This article explains the structure and content of the guidance for case handling of radiological health law enforcement by taking the case of arranging radiation workers who have not undergone an occupational health examination to engage in the radiological occupational-disease-inductive operation in medical institutions as an example.

Objective:To analyze the whole genome traceability and variation analysis of SARS-CoV-2 in local COVID-19 outbreaks in Binhai New Area, Tianjin.Methods:The whole-genome high-throughput sequencing was performed on throat swab samples collected from one local asymptomatic infected person and five confirmed cases of COVID-19 in Binhai New Area of Tianjin from November 7 to December 5, 2020. The sequencing data were assembled by De novo. MAFFT v7.0 multiple sequence alignment program and MEGA X software were used to compare the above data and construct phylogenetic tree (Neighbor-joining method).Results:The genetic similarity between the sequences of 6 SARS-CoV-2 strains and Wuhan reference sequence (Wuhan-Hu-1) was greater than 99.9%. Two of six strains were genetically identical, conform to the L-Lineage European Branch Ⅱ.1(America Branch)/B.1; The other four strains had the same genes and were in line with the characteristics of L-Lineage European Branch Ⅰ/B.1.1.These six strains belonged to different evolutionary branches and two different transmission chains. There were 18 nucleotide mutation sites in sequences of six SARS-CoV-2 strains, eight of which were synonymous mutation sites, nine of which were missense mutation sites, resulting in nine amino acid mutation sites, and important mutation sites of RDRP-P323L and S-D614G were found in all of the six samples.Conclusions:In this study, there were two COVID-19 outbreaks in Binhai New Area of Tianjin, and the sequences of six SARS-CoV-2 strains belonged to different evolutionary branches and two different transmission chains. It might come from porters′ contact with imported cold chain items contaminated with SARS-CoV-2 from different sources. All the sequences of six SARS-CoV-2 strains had P323L and D614G mutations, which indicated that the virus mutation and transmission ability were stronger. The surveillance of important employees of the cold chain in Tianjin and local and imported cases should be continuously strengthened.

Integrins are a family of transmembrane receptors that connect the extracellular matrix and actin skeleton, which mediate cell adhesion, migration, signal transduction, and gene transcription. As a bi-directional signaling molecule, integrins can modulate many aspects of tumorigenesis, including tumor growth, invasion, angiogenesis, metastasis, and therapeutic resistance. Therefore, integrins have a great potential as antitumor therapeutic targets. In this review, we summarize the recent reports of integrins in human hepatocellular carcinoma (HCC), focusing on the abnormal expression, activation, and signaling of integrins in cancer cells as well as their roles in other cells in the tumor microenvironment. We also discuss the regulation and functions of integrins in hepatitis B virus-related HCC. Finally, we update the clinical and preclinical studies of integrin-related drugs in the treatment of HCC.
Humans ; Integrins/metabolism* ; Carcinoma, Hepatocellular/genetics* ; Liver Neoplasms/genetics* ; Cell Adhesion ; Carcinogenesis ; Cell Transformation, Neoplastic ; Tumor Microenvironment