Animals ; Apoptosis ; drug effects ; Ginsenosides ; pharmacology ; Myocardial Reperfusion Injury ; pathology ; Myocytes, Cardiac ; cytology ; Rats ; Rats, Wistar

Humans ; Medicine ; Medicine, Chinese Traditional ; methods

Antimony ; blood ; Humans ; Spectrophotometry, Atomic ; methods

Puromycin-sensitive aminopeptidase (PSAP) belongs to the M1 family of aminopeptidases, characterized by the N-terminal substrate binding sequence GAMEN, the enzyme activity center HEXXH(X)₁₈E motif, and the C-terminal ERAP-1-like superfamily structural domain. Encoded by the gene NPEPPS located at 17q21.32, PSAP consists of 919 amino acids and is widely distributed throughout the human body, with the highest expression in the brain, followed by the heart and skeletal muscle. It is also found in the liver, renal tubular epithelium, small intestine, large intestine epithelium, and gastric epithelial cells. PSAP primarily relies on its aminopeptidase hydrolytic activity to remove toxic protein aggregates such as Tau, poly Q, and Cu, Zn-superoxide dismutase 1, making it an important factor in the development of diseases such as Alzheimer's disease, Huntington's chorea, and tumors. Existing PSAP inhibitors include bestatin, amastatin, leuhistin, actinonin, and purinomycin, some of which are already available or in clinical trials. This review provides an overview of the structural and biological functions of M1 family aminopeptidases, with a focus on PSAP, to facilitate further research and targeted drug development.

Carcinoma in Situ ; metabolism ; pathology ; Cystadenocarcinoma, Serous ; metabolism ; pathology ; Fallopian Tube Neoplasms ; metabolism ; pathology ; Fallopian Tubes ; metabolism ; pathology ; Female ; Humans ; Neoplasm Invasiveness ; Ovary ; pathology ; Tumor Suppressor Protein p53 ; metabolism

The enzyme activity of ?- Acetolactate Decaroboxylases (ALDC) from different microbes was studied, the results demonstrated that it was quite different among them. There were diversities of their enzyme reaction velocities. It was clear that the enzyme activity was affected by the pH of the enzyme reaction system, for example, the optimum pH of ALDC from Lactococcus lactis was 6. 6, while for Aerobacter Aerogenes it was 5. 8. Addition leucine,valine and isoleucine into enzyme reaction system obviously affected the enzyme activity of ALDC from different microbes.

Objective To investigated the effects of combined arsenic trioxide(ATO) and resveratrol(Res)on the viability of NB4 human leukemia cells. Methods NB4 human leukemia cell was used in this experiment.Cells were cultured in ATO (0,0.1875,0.3750,0.7500, 1.1250, 1.5000,2.2500,3.0000,5.0000 μmol/L) and Res (0, 1.5625,3.1250,6.2500, 12.5000, 18.7500,25.0000,37.5000,50.0000 μmol/L). Cell viabilities were measured by MTT in different treatment groups. Half inhibitory concentration(IC50) was calculated. The ratio of concentration of ATO and Res 1.5∶ 18,1.5∶ 25,1.5∶ 35 was added to cells, and the combination index(CI) was calculated. The level of ROS in control, ATO( 1.5000 μmol/L), Res(25.0000 μmol/L) and ATO(0.9000 μmol/L) + Res( 12.5000μmol/L) groups was measured by chemiluminescence assay. Results ①ATO( ≥0.7500 μmol/L) reduced the viability of NB4 cells in a concentration-dependent manner(P ＜ 0.05 ), and IC50 was (1.78 ± 0.11 )μmol/L. ②)Res (≥18.7500 μ mol/L) dose-dependently decreased the viability of NB4 cells (P ＜ 0.05 ), and IC50 was ( 18.71 ±0.18)μ mol/L. ③Combination of ATO and Res showed an antagonistic effect on NB4 cells viability. ④The ROS in Res group( 1670.55 ± 13.97) was significantly lower than that in control group(2345.88 ± 14.48,P ＜ 0.05). The ROS in ATO group (3092.42 ± 94.84) was significantly higher than that in control group(P ＜ 0.05). The ROS in ATO + Res group (1860.27 ± 15.99) was significantly lower than that in ATO group(P ＜ 0.05). Conclusions NB4 cell survival rate can be decreased by ATO and Res. The combination of arsenic trioxide and Res presents an antagonistic effect on NB4 cell viability, in part by reducing intracellular ROS formation.

Objective The variation of serum thyroid hormones within the euthyroid range may be associated with insulin sensitivity.The study was to investigate whether the variation of thyroid hormones within the euthyroid range could influence insulin sensitivity in elderly patients with type 2 diabetes mellitus (T2DM). Methods 200 elderly inpatients and outpatients with type 2 diabetes were collected from September 2013 to May 2014 in our hospital for T2DM group.150 normal controls with normal glucose metabolism were taken as the control group.Blood samples were collected after 75g oral glucose tolerance test(OGTT) on all the re-search objects.Questionaire survey, physical examination and related metabolic index test were also done on them .Chemilumines-cence method were applied to detect their insulin, thyroid stimulating hormone(TSH), FT3 and FT4. Results FT3 levels were significantly lower in T2DM group than in control group[(4.05 ±0.27 )pmol/L vs (4.61 ±0.5)pmol/L), P<0.05].TSH levels were significantly higher in T2DM group than in control group[(2.75 ±1.07) IU/mL vs (2.28 ±0.89) IU/mL, P<0.05], while there was no significant difference as to FT4 levels between these two groups.All subjects were divided into three groups according to the tertiles of FT3 level, Matsuda index of high FT3 level group were significantly higher in comparison to middle and low FT3 level groups, while there was no significant difference as to HOMA-IR in the three groups.FT3 levels were negatively correlated with HO-MA-IR and positively correlated with Matsuda index .After stepwise regression analysis, there was significant positive association be-tween FT3 and Matsuda index. Conclusion Thyroid hormone especially FT3 is significantly associated with insulin resistance .FT3 may participate in the development of type 2 diabetes, which pro-vides a new treatment for T2DM.

0.05),but the expression in controls were negative.The expression levels of PRAME gene at remission was decreased obviously,but increased again when the patients relapsed.Conclusions Expression of PRAME gene has a high level in childhood acute leukemia.The dynamic changes are closely related with the prognosis.It can be regarded as a candidate for detecting minimal residual disease in acute leukemia,and may have important implications for estimating the prognosis and guiding the chemical therapy.

Objective To investigate the relationship between EVI1 gene expression and clinical features and prognosis of children with acute myeloid leukemia (AML). Methods EVI1 gene was detected in AML children, correlation of clinical and lab features, prognosis of AML children with EVI1 gene were analyzed. Results EVI1 expression is positive in 38 of 145 children with AML. There were no significant differences in age, gender, hemoglobin concentration, leukocytes and platelet count, subtype of morphology, ratio of chromosomal anomaly and complex karyotypes between EVI1 positive and EVI1 negative group (P>0.05); coexist genes were detected in 9 cases (23.68%) of EVI1 positive group. Rate of complete remission (CR) was 91.67% in 24 cases of EVI1 positive patients received chemotherapy. Relapse rate was 64.29% and 14.29% in EVI1 positive patients who received chemotherapy and allo-hematopoietic stem cell transplantation (allo-HSCT), retrospectively and significant differences were found (P<0.05). There was no significant difference in CR but significant difference was found in event free survival (P<0.05) for EVI1 positive and EVI1 negative patients who received chemotherapy. EVI1 gene kept negative when bone marrow relapse occurred in two patients with EVI1 positive at diagnosis. Conclusion EVI1 gene may play adverse role in pediatric AML; prognosis of EVI1 positive AML patients can be improved by allo-HSCT; follow-up of EVI1 transcript levels is insufficient to monitoring of minimal residual disease.