LASS2/TMSG1 overexpression inhibits proliferation and promotes apoptosis of human lung cancer A549 cells possibly by upregulating ceramide and p38 MAPK to activate a signaling cascade / 南方医科大学学报

OBJECTIVE@#To investigate the effects of LASS2/TMSG1 gene overexpression on proliferation and apoptosis of human lung cancer A549 cells and explore the possible mechanism.@*METHODS@#We examined LASS2/TMSG1 expression level in a previously constructed A549 cell line overexpressing LASS2/TMSG1 using Western blotting. The proliferation and apoptosis of the cells were detected using colony-forming assay, CCK-8 assay, Hoechst/PI double staining and flow cytometry. Fourteen nude mice were randomized into 2 groups (n=7) to receive subcutaneous injection of A549 cells with or without LASS2/TMSG1 overexpression on the back of the neck, and the cell proliferation in vivo was observed. The expression levels of p38 MAPK protein and p-p38 MAPK protein in the xenografts were detected with Western blotting. ELISA was used to detect the levels of ceramide and p38 MAPK protein in cultured A549 cell supernatants and the xenografts in nude mice.@*RESULTS@#Compared with the negative control cells, A549 cells with LASS2/TMSG1 overexpression had significantly lowered proliferation ability in vitro with increased early apoptosis rate (P < 0.05), and showed obvious growth inhibition after inoculation in nude mice(P < 0.05). Western blotting showed that in both cultured A549 cells and the xenografts in nude mice, LASS2/TMSG1 gene overexpression significantly increased the expression levels of p38 MAPK protein and p-p38 MAPK protein (P < 0.05); the results of ELISA also revealed significantly increased levels of ceramide and p38 MAPK protein in the cell supernatant andxenografts as well (P < 0.05).@*CONCLUSION@#Overexpression of LASS2/TMSG1 gene can significantly inhibit the proliferation and promote early apoptosis of human lung cancer A549 cells both in vitro and in vivo possibly by upregulating the expressions of ceramide and p38 MAPK protein to activate a signal transduction cascade.

Research progress of mitochondria as a key target for radioprotection / 中华放射医学与防护杂志

Ionizing radiation can cause damage to biological macromolecules such as DNA and protein, resulting in a series of biological changes such as carcinogenesis, apoptosis and aging. However, after radiation injury, the lack of effective prevention and treatment targets leads to the limited variety of available therapeutic drugs. Recent studies suggest that mitochondria play an important role in radiation injury and are expected to become a new prevention and treatment target. This paper reviewed the effects of ionizing radiation on mitochondria, especially the occurrence of oxidative stress, and the role of mitochondria in radiation-induced biological effects, in order to discuss the feasibility of mitochondria as a potential target for radiation damage prevention and treatment.

The influence of multi-disciplinary cooperation and optimized management mode on the negative situation and rehabilitation effect of patients with affective disorder after coronary heart disease and cerebrovascular disease / 中国实用护理杂志

Objective:To observe the influence of multi-disciplinary cooperation and optimization management mode on the negative situation and rehabilitation effect of patients with affective disorder after coronary heart disease and cerebrovascular disease.Methods:A total of 188 patients with emotional disorders caused by coronary heart disease and cerebrovascular disease from January 2017 to December 2018 to our hospital were selected. According to the random number method, 94 cases in the control group adopted the conventional management model, and 94 cases in the experimental group adopted the multidisciplinary collaborative optimization management model. The negative emotions [evaluated by Self-rating Anxiety Scale (SAS), Self-rating Depression Scale(SDS) ] scores before and after management, the coping style (Jalowies) scores, and quality of life [evaluated by World Health Organization Quality of Life-Brief (WHOQOL-BREF) ] scores were compared between the two groups. The clinical rehabilitation effect and satisfaction rate of related management between the two groups were compared.Results:There were no significant differences between the two groups before management of SAS scores, SDS scores, Jalowies scores, and WHOQOL-BREF quality of life scores ( P> 0.05). After management, the SAS scores and SDS scores of the two groups were significantly reduced, and the Jalowies scores and WHOQOL-BREF quality of life scores were significantly increased. After management, the SAS score and SDS score of the experimental group were 47.32±5.68, 49.93±6.49 and 54.95±6.59, 55.33±8.30 in the control group, the difference was significant between two groups ( t value was 8.503, 4.969, P<0.01). The Jalowies scores and WHOQOL-BREF scores of the experimental group were higher than those of the control group ( t value was -27.662--4.290, P<0.01). The total effective rate of rehabilitation in the experimental group was 98.94%(93/94), which was significantly higher than 90.43%(85/94) in the control group, the difference was statistically significant ( χ2 value was 6.760, P <0.05). The total satisfaction rate of the experimental group for management intervention was 100.00%(94/94), which was significantly higher than the total satisfaction rate of the control group, 91.49%(86/94), the difference was statistically significant ( χ2 value was 6.397, P <0.05). Conclusions:In the patients with affective disorder caused by coronary heart disease and cerebrovascular disease, multi-disciplinary cooperation and optimization management mode can significantly reduce the negative emotions of patients after management, improve the way of patients to deal with the disease, effectively improve the clinical rehabilitation effect and the quality of life of patients, improve the satisfaction rate of patients with management, shorten the distance between nurses and patients, and achieve ideal results.

Relationship between early onset diabetes mellitus and atherosclerosis in patients with type 2 diabetic kidney disease / 中国医师杂志

Objective To investigate the relationship between early onset diabetes mellitus and atherosclerosis in patients with type 2 diabetic kidney disease.Methods Total 240 hospitalized patients (91 females and 149 males) in our hospital with type 2 diabetic kidney disease from January 2017 to December 2017 were enrolled.According to the age of newly diagnosed diabetes mellitus,the patients were divided into early onset group (the age at first diagnosis of diabetes was ＜ 40 years old,n =46) and late onset group (the age at first diagnosis of diabetes was ≥ 40 years old,n =194).The clinical data,anthropological measurements were collected.The relationships between early onset diabetes mellitus and atherosclerosis were analyzed by t test,u test,and Chi square test for statistical analysis.Logistic regression analysis was performed to obtain odds ratios (OR) for early versus late onset of T2DM.Results Compared with the late onset group,the early onset group was younger,less complicated with hypertension,shorter duration of hypertension,less use of renin-angiotensin-aldosterone system (RAAS) inhibitors and other types of antihypertensive drugs and lipid-lowering drugs (P ＜ 0.05).However,the prevalence of atherosclerosis in early onset group was increased (76.1％ vs 59.3％,P=0.034).There were no significant difference in disease duration,smoking,body mass index (BMI),systolic blood pressure (SBP),diastolic blood pressure (DBP),low density lipoprotein (LDL-C) and glycosylated hemoglobin (HbA1 c) between the two groups.Univariate logistics regression analysis showed early onset type 2 diabetes mellitus,age and duration of diabetes were predictors of atherosclerosis (P ＜ 0.05).With the use of multivariate logistic regression,patients with early onset diabetes had higher risks for atherosclerosis when adjusted by gender,age,metabolic factors and disease duration (OR 2.93,95％ CI:1.24,6.93,P =0.014).Conclusions Early onset diabetes mellitus increases the risk of atherosclerosis in patients with type 2 diabetic kidney disease.

Efficacy of Autologous DC-CIK Cells Combined with Other Immune Cells in the Treatment of Hematological Malignancies -Retrospective Study / 中国实验血液学杂志

OBJECTIVE@#To investigate the safety and clinical efficacy of autologous DC-CIK cells combined with other immune cells for patients with hematological malignancies and analyze patient prognosis.@*METHODS@#50 patients with hematological malignancies who received cellular immunotherapy from September 2014 to April 2016 were retrospectively studied in the First Affiliated Hospital of Xi'an Jiaotong University, 115 cases times of cellular immunotherapy were performed. According to the selected treatment, the patients were divided into the dual cell group (DC-CIK cell treatment) and the multi-cell group (DC-CIK cell combined with other immune cells); According to the treatment course, the patients were divided into the single course group (completed by ＜3 times) and the multiple course group. The changes of T lymphocyte subsets, blood routine indicators and KPS scores as well as the overall survival time before and after treatment were compared and analyzed.@*RESULTS@#[WTB1]The difference of general conditions before treatment including the number of patients, sex, age, T lymphocyte subsets, blood routine indicators, KPS scores and so on in 2 groups divided according to 2 kinds of treatment methods were not statistically significant, indicating that the 2 groups were comparable. Grouped by selected treatment, the CD4/CD8 ratio, Hb and Plt levels decreased in the dual cell group, compared with those before treatment(P＜0.05). The CD3CD4 ratio after treatment in multiple cell group decreased, compared with that before treatment (P＜0.05). The 3-year survival rate of patients in dual cell and multiple cell groups was 61.3% vs 69.8%, the overall survival time of patients in 2 groups was 32.4 months vs 39.6 months, there were no statisticall differences between 2 groups(P>0.05). Grouped by treatment course, the CD3 ratio after treatment increased, while the Hb level after treatment decreased in single course group, compared with level before treatment(P＜0.05). The CD3CD4 ratio, Plt level decreased, while the KPS scores increased after treatment in multiple course group, compared with those before treatment(P＜0.05). The 3-year survival rate in single course and multiple course groups was 52% vs 76.4%, the overall survival time was 28.7 months vs 40.9 months respectively, statistically significant with difference (P＜0.05).@*CONCLUSION@#Autologous DC-CIK cells combined with other immune cells in the treatment of hematological malignancies can change the immune function of the patients and improve the antitumor activity. The multi-course treatment can improve the quality of life, prolong the overall survival time, thus worthing clinical promotion.

Autophagy and neuronal diseases / 中华危重病急救医学

Autophagy is a dynamic process that allows recycling of long-lived proteins and damaged organelles into biosynthetic materials for maintaining the normal cellular homeostasis. Recently, accumulating evidence has indicated that autophagy played important roles in the pathogenesis of neuronal diseases. In this article, the research progress of autophagy in the pathogenesis and regulation mechanism of common nervous system diseases were reviewed to deepen the understanding of autophagy, and arouse researchers' attention on dynamic regulation of autophagy and alleviating autophagic flow injury.

Recent highlights of Chinese medicine for advanced lung cancer / 中国结合医学杂志

Owing to its unique superiority in improving quality of life and prolonging survival time among advanced lung cancer patients, Chinese medicine (CM) has, in recent years, received increased attentions worldwide. We utilized a bibliometric statistical method based on MEDLINE/GoPubMed to conduct a comprehensive analysis of the current application status of CM in lung cancer, by including annual and accumulated publications, origin distribution of countries and journals, and keywords with a higher frequency score. Then the relevant clinical trials and mechanistic studies were systematically summarized within the field according to research types. We have raised potential problems and provided potentially useful reference information that could guide similar studies in the future. The basic experimental results are highly consistent with clinical trials, leading us to conclude that CM can offer better overall therapeutic benefits when used in combination with routine Western medicine for patients with advanced lung cancer.

Progress of effects of light on plant flavonoids / 中国中药杂志

As an important secondary metabolites of medicinal plant, flavonoids plays a very important role on itself including light protection and antioxidant. Light is one of the important environmental factors which impacts the secondary metabolites of plant and has a significant impact on biological synthesis of flavonoids. This paper reviews the recent progress of the effects of light on flavonoids on the plants focusing from light intensity and light quality, and summarizes briefly functions of the phenylalanine ammonia lyase (PAL) in plant secondary metabolism and the upstream key enzyme chalcone synthase (CHS) in flavonoid biosynthetic pathway.

Recent highlights of experimental research for inhibiting tumor growth by using Chinese medicine / 中国结合医学杂志

To give an overview of contemporary experimental research using Chinese medicine (CM) for the treatment of cancer. As an integral part of mainstream medicine in the People's Republic of China, CM emphasizes improvements in holistic physical condition instead of merely killing tumor cells, which is consistent with the current medical model that advocates patient-oriented treatment. Great progress has been made in experimental research, and the principle aspects include anti-tumor angiogenesis, inducing apoptosis and differentiation, reversing multidrug resistance, and improving immune function. As a current hot topic in cancer research, tumor microenvironment (TME) highlights the mutual and interdependent interaction between tumor cells and their surrounding tissues, and the CM treatment concept bears a striking resemblance to it. To date, primary points of TME include extracellular matrix remodeling, inflammation, hypoxia, and angiogenesis, but trials using CM with a focus on TME are rare. Despite considerable recent development, experimental research on CM for solving cancer issues appears insufficient. Greater efforts in this field are urgently needed.

Pelvic radiotherapy induces dysbiosis of gut microbiota and enteric infection in mice / 中华放射医学与防护杂志

Objective To explore the changes of gut microbiota in response to abdominal and pelvic radiotherapy and its potential relationship with intestinal infection.Methods Irradiation was delivered to the abdominal region of BALB/c mice,following the regular human pelvic-radiotherapy protocol,2.0 Gy/d,continuous 5 d/week.Samples of ileum tissue and the intestinal content were collected at different time points of irradiation procedure,including after 3 and 5 weeks,and at 1 week after 6 weeks of irradiation.Quantitative RT-PCR was used to measure the mRNA level of antimicrobial peptides and pro-inflammtory factors.Bacterial translocation was determined by PCR.The gut microbiota was characterized by the denaturing gradient electrophoresis assay.Results The expressions of cryptdin-1 and cryptdin-4 were decreased after 3 weeks of irradiation and at 1 week after 6 weeks of irradiation(t =-7.43,-3.54,-4.72,-4.27,P ＜ 0.05),while they were significantly increased at the 5 weeks of radiation (t =6.15,5.75,P ＜ 0.05).The diversity index and richness of gut microbiota after 3 or 5 weeks irradiation were significantly decreased (t =-3.49,-4.19,-3.44,-4.97,P ＜ 0.05).The gut microbiota dysbiosis of the irradiated mice was characterized with the decrease of probiotics of Lactobacillus and the increasing of opportunistic pathogen of Escherichia coli,Shigella flexneri,et al.Bacterial translocation episodes were more frequently in the irradiated mice than that of control animal.The mRNA levels of IL-1β、IL-6 and TNF-α were significantly increased after 3 or 5 weeks of irradiation (t =4.85,6.16,7.71,4.60,4.86,5.97,P ＜ 0.05).Compared with the control,the expression levels of IL-1β and TNF-α at the 1 week after 6 weeks of irradiation ending was also obviously enhanced (t =3.67,5.88,P ＜0.05).Conclusions Pelvic radiotherapy can induce abnormality of enteric antimicrobial peptides and may result in gut microbiota dysbiosis.The disturbed gut microbial flora may further trigger an incurrence of bacterial translocation and enteritis.Therefore,the gut microbiota may be a potential interfering target to alleviate radiotherapy adverse effect.

Protective effect of atorvastatin on radiation-induced endothelial cell injury / 中华放射医学与防护杂志

Objective To explore the protective effect of atorvastatin on irradiated endothelium and the thrombomodulin(TM)expression.Methods Cultured human coronary artery endothelial cells(HCAEC)and human umbilical vein endothelial cells(HUVEC)were treated by atorvastatin at the final concentration of 10 μmol/ml for 10 min,and then irradiated with 2 and 25 Gy.Cell cycles status and TM expression were quantitatively measured by flow cytometry 24 hours after irradiation.Protein C activation in endothelial cells was also assessod.Results After administration with atorvastatin for 24 h,the TM expression increased by 77%,59% and 61% in normal control group,2 Gy group and 25 Gy group,respectively(t=27.395,26.420,58.065;P=0.000).The protein C levels decreased by 23% and 34% compared with the normal group post-irradiation to 2 and 25 Gy,but increased by 79% and 76% compared with the irradiated control group after administration with atorvastatin.The rates of cell apoptosis decreased by 6% and 16% in 2 Gy and 25 Gy groups,respectively after administration with atorvastatin for 24 h(t=4.178,17.863;P=0.000).Conclusions Atorva statin can protect endothelia cell from irradiation-induced apeptosis by increasing TM expression and protein C activation.

Inhibitory effect of iguratimod on TNFalpha production and NF-kappaB activity in LPS-stimulated rat alveolar macrophage cell line / 药学学报

<p><b>AIM</b>To investigate the effect of iguratimod (T-614), a non-steroidal anti-inflammatory drug, on TNFalpha mRNA expression and TNFalpha production, and on the activity of nuclear factor-kappaB (NF-kappaB) in the rat alveolar macrophage cell line (NR8383) activated by LPS.</p><p><b>METHODS</b>NR8383 cells were pretreated with T-614 (13.4, 26.7, 53.4 micromol x L(-1)), then were stimulated with LPS. The production of TNFalpha in the supernatant of NR8383 was assayed by enzyme-linked immunosorbent assay (ELISA). The TNFalpha mRNA level was determined by a semi-quantitative PCR assay. Assessment of the NF-kappaB DNA binding activity was performed by an ELISA kit.</p><p><b>RESULTS</b>T-614 inhibited LPS-stimulated mRNA expression and production of TNFalpha in a concentration-dependent manner, as well as the activity of NF-kappaB. The IC50 value of effect of T-614 on TNFalpha level was 26.2 micromol x L(-1).</p><p><b>CONCLUSION</b>The inhibitory effect of T-614 on the production of TNFalpha in LPS-stimulated NR8383 cells may be mediated by suppression of NF-kappaB activity.</p>

Observation of the curative effect of Huangqi inoculation fluid union chemotherapy on the treatment of acute leukemia / 中国基层医药

Objective To evaluate the efficacy of Huangqi inoculation fluid union chemotherapy in the treat- ment of the induction chemotherapy time of acute leukemia.Methods The patients with acute leukemia were ran- domized into two groups:the 1st group treated with conventional induction chemotherapy(control-group) and the 2nd group treated with chemotherapy treatment union Huangqi inoculation fluid(observation-group).Chinieal effects and poisonous side effects of two groups were compared.Results The completely alleviating rate of observation- group was 87.75%,the partially alleviating rate of observation-group was 4.04%,and KPS grades total improve- ment rate was 73.47%;the completely alleviating rate of control-group was 50.00%,the partially alleviating rate of control group was 16.67%,and KPS grades total improvement rate was 36.67%;the poisonous side effects of ob- servation-group was lower titan that of the control-group(P

Research Progress in Genetic Engineering for Cellulosic Ethanol / 中国生物工程杂志

Lignocellulosic biomass is a promising new source of renewable biofuel that can help reduce reliance on fossil fuels.Researches have been done over the last decades.And considerable progress has been made.The abilities and pathways of natural microorganisms to produce ethanol from cellulose are different.So the researches of reconstructing and recombinating the useful genes from different strains are of great significance to improve the yield of ethanol production and reduce the cost.The characteristics and mechanisms of natural ethanologenic strains and the research progress of constructing recombinant strains was introduced and also analyzed the perspectives and challenges.

Expression of TN4 gene and its role in human hepatocarcinogenesis from Qidong, a liver cancer risk area / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>We investigated the expression and role of TN4 in the oncogenesis of human hepatocellular carcinoma (HCC) from Qidong which is a HCC risk area.</p><p><b>METHODS</b>The expression of TN4 in HCC was observed using immunohistochemical staining (IHC). TN4 levels were manipulated in human liver cancer cell SMMC7721, using pcDNA3.1 eukaryotic expression constructs designed to express the complete TN4 cDNA. The biological changes of the cells were observed before and after transfection of TN4 and the change of gene expression was analysed by atlas cDNA expression array.</p><p><b>RESULTS</b>Among 100 pairs of samples of HCC, TN4 down-regulation expression and up-regulation expression positive rate were 81% (81/100), 19% (19/100), respectively (P < 0.01). TN4 protein was mainly localized in cytoplasm and membrane. The positive rate of TN4 were 10% (3/30), 100% (70/70) in lymph node metastasis and no lymph node metastasis, respectively (P < 0.01). The growth rates of the derivative SMMC7721-TN4 cell lines were decreased in comparison with that of normal SMMC7721 cells and pcDNA-SMMC7721. Some gene expression was changed before and after transfection of TN4. At 30 days of post-implantation of SMMC7721-TN4, SMMC7721-pcDNA3, SMMC7721 group produced tumors of (301.9 +/- 143.4) mm(3), (2418.7 +/- 362.8) mm(3), (2317.4 +/- 587.8) mm(3), respectively, (P < 0.01). Tumor inhibiting rate was 82.4% in TN4 transfection group. Sections of tumors were observed for their degree of tissue necrosis and there was higher degree of necrosis in tumors of the TN4-SMMC7721 cell group than those of the SMMC7721, SMMC7721-pcDNA groups.</p><p><b>CONCLUSIONS</b>TN4 may play an important role in the oncogenesis of human HCC, especially in Qidong, the HCC risk area and TN4 could be a candidate tumor suppressor gene for HCC.</p>

Preliminary study on hens immunized with recombinant human testis prostaglandin D synthase DNA / 中华男科学杂志

<p><b>OBJECTIVES</b>In order to identify whether the hens immunized with recombinant human testis prostaglandin D synthase (rhtL-PGDS) DNA can produce anti-L-PGDS antibody.</p><p><b>METHODS</b>The serum were got from the hens immunized with recombinant plasmid pGEX-2T/htL-PGDS DNA (100 micrograms) every 2 weeks for 2 times. The exist of anti-L-PGDS antibody and its titer were tested with agarose dual immunodiffusion and ELISA with rhtL-PGDS as antigen.</p><p><b>RESULTS</b>The serum anti-L-PGDS antibody in hen immunized with pGEX-2T/htL-PGDS DNA were confirmed and its titer tested by ELISA was 1:2,048.</p><p><b>CONCLUSIONS</b>It is feasible to produce anti-L-PGDS antibody by immunizing hens with recombinant pGEX-2T/htL-PGES DNA.</p>

Advances in sperm capacitation / 中华男科学杂志

Sperm must be capacitated before sperm-ovum fusion. Capacitation was once considered as hyperactivation. But now many investigators thought that capacitation wasn't equal to hyperactivation, and that sperm hyperactivation might be a moiety of capacitation or the result of capacitation. In the present, the methods used to study sperm capacitation include fertilization in vitro, induction of sperm acrosome reaction, FITC-labeled chlortetracycline and plant hemoagglutinin. The studies on sperm capacitation in vitro mainly focused on the inductive substances of sperm capacitation and subsequent results analysis. It could lay foundation for the manifestation of molecular mechanism of sperm capacitation and destination of sperm capacitation in molecular levels.

The study of clinical manifestations of osteogenesis imperfecta in a Chinese family / 中国实用内科杂志

Objective To study the clinical characters,the mode of inheritance of osteogenesis Imperfecta in a Chinese Family and effect of bisphosphonate on Osteogenesis Imperfecta.Methods Clinical data of proband and their family members were collected.The family patterns were mapped.clinical features were summarized and analyzed.Results(1)Clinical features:There are sixty members of four generations in the family.20 cases including proband's mother and cousin were diagnosed as having OI type Ⅰ based on clinical manifestations.15 cases of blue sclera,16 cases of dentinogenesis imperfecta,5 cases of hearing loss and 3 cases of fracture.Thyroid cancer and Turner's syndrome was found in Proband's mother and cousin respectively.(2)The genetic map showed that the disease was autosomal dominant inheritance.(3)Treatment:The proband,her mother and her cousin were treated with alendronate for two years.Bone pain relieved and bone mineral density increased significantly,and no fracture occurred so far.Conclusion(1)This OI family was diagnosed as having OI type Ⅰ.The mode of inheritance is autosomal dominant inheritance.(2)Bisphosphonates may be an effective drug for treatment of OI.