Efficacy of high-dose dual therapy for Helicobacter pylori infection eradication in servicemen: a randomized controlled trial / 中华内科杂志

Objective: To assess the efficacy and cost-effectiveness of high-dose dual therapy compared with bismuth-containing quadruple therapy for treating Helicobacter pylori(H.pylori) infection in servicemen patients. Methods: A total of 160 H. pylori-infected, treatment-naive servicemen, including 74 men and 86 women, aged from 20 years to 74 years, with a mean (SD) age of 43 (13) years, tested in the First Center of Chinese PLA General Hospital from March 2022 to May 2022 were enrolled in this open-label, randomized controlled clinical trial. Patients were randomly allocated into 2 groups: the 14-day high-dose dual therapy group and the bismuth-containing quadruple therapy group. Eradication rates, adverse events, patient compliance, and drug costs were compared between the two groups. The t-test was used for continuous variables, and the Chi-square test for categorical variables. Results: No significant difference in H. pylori eradication rates were found between high-dose dual therapy and bismuth-containing quadruple therapy by ITT, mITT and PP analysis[ITT:90.0% (95%CI 81.2%-95.6%) vs. 87.5% (95%CI 78.2%-93.8%), χ2=0.25, P=0.617;mITT:93.5% (95%CI 85.5%-97.9%) vs. 93.3% (95%CI 85.1%-97.8%), χ2<0.01, P=1.000; PP: 93.5% (95%CI 85.5%-97.9%) vs. 94.5% (95%CI 86.6%-98.5%), χ2<0.01, P=1.000 ]. The dual therapy group exhibited significantly less overall side effects compared with the quadruple therapy group [21.8% (17/78) vs. 38.5% (30/78), χ2=5.15,P=0.023]. There were no significant differences in the compliance rates between the two groups [98.7%(77/78) vs. 94.9%(74/78), χ2=0.83,P=0.363]. The cost of medications in the dual therapy was 32.0% lower compared with that in the quadruple therapy (472.10 RMB vs. 693.94 RMB). Conclusions: The dual regimen has a favorable effect on the eradication of H. pylori infection in servicemen patients. Based on the ITT analysis, the eradication rate of the dual regimen is grade B (90%, good). Additionally, it exhibited a lower incidence of adverse events, better compliance and significantly reduced cost. The dual regimen is expected to be a new choice for the first-line treatment of H. pylori infection in servicemen but needs further evaluation.

Advances in the role of helper T cells in autoimmune diseases / 中华医学杂志(英文版)

Autoimmune diseases are primary immune diseases in which autoreactive antibodies or sensitized lymphocytes destroy and damage tissue and cellular components, resulting in tissue damage and organ dysfunction. Helper T cells may be involved in the pathogenesis of autoimmune diseases under certain conditions. This review summarizes recent research on the role of helper T cells in autoimmune diseases from two aspects, helper T cell-mediated production of autoantibodies by B cells and helper T cell-induced activation of abnormal lymphocytes, and provides ideas for the treatment of autoimmune diseases. The abnormal expression of helper T cells promotes the differentiation of B cells that produce autoantibodies, which leads to the development of different diseases. Among them, abnormal expression of Th2 cells and T follicular helper cells is more likely to cause antibody-mediated autoimmune diseases. In addition, abnormal activation of helper T cells also mediates autoimmune diseases through the production of abnormal cytokines and chemokines. Helper T cells play an essential role in the pathogenesis of autoimmune diseases, and a full understanding of their role in autoimmune diseases is helpful for providing ideas for the treatment of autoimmune diseases.

Chemical Constituents from Sprout of Ziziphi jujuba var. spinosa / 中国实验方剂学杂志

Objective:To investigate the chemical constituents from sprout of Ziziphi jujuba var. spinosa,and explore the effect of germination on the activity of Z. jujuba var. spinosa seed from the perspective of material basis. Method:The dry sprout of Z. jujuba var. spinosa was crushed and extracted with petroleum ether to remove oils and fats,then the residues were dried and received reflux extraction with methanol. The solvent was decompressed and recovered to obtain methanol fractions. The fractions were dissolved, isolated and purified by column chromatography technologies such as silica gel,RP C18 and Sephadex LH-20,and the structures of the compounds were identified by nuclear magnetic resonance (NMR),mass spectrometry (MS) and reference liteature. Result:The 13 compounds were isolated from the sprout of Z. jujuba var. spinosa and identified as jujuboside B (1),jujuboside D (2),jujuboside A (3),betulinic acid (4),betulin (5),lupeol (6),alphitolic acid (7),ceanothic acid (8),oleanolic acid (9),ursolic acid (10),magnoflorine (11),nuciferine (12) and swertisin (13). Conclusion:All the above compounds were isolated from the sprout of of Z. jujuba var. spinosa for the first time. The study showed that the chemical constituents from the sprout were quite similar with those from the seeds of Z. jujuba var. spinosa,mainly including triterpenoids and saponins,flavonoids,alkaloid,etc.Overall,the results described in this study could provide certain chemical basis for further resources exploitation and utilization of the sprout of Z. jujuba var. spinosa.

Effect of Acupuncture plus Intradermal Needle on Blood Pressure in Patients with Low-risk Mild Essential Hypertension / 上海针灸杂志

Objective To observe the regulatory effect of acupuncture plus intradermal needle on blood pressure in patients with low-risk mild essential hypertension. Method Sixty patients with low-risk mild essential hypertension were randomized into an experiment group and a control group. The experiment group was intervened by acupuncture plus intradermal needle in addition to life habit control; the control group was simply intervened by life habit control.The intervention lasted 4 weeks for both groups. Result Twenty-nine subjects in the experiment group and 30 subjects in the control group finished the trial, and thus a total of 59 cases were involved in the statistical analysis. After treatment, the systolic blood pressure (SBP) was (130.93±4.25) mmHg and diastolic blood pressure (DBP) was (81.31±3.06) mmHg in the experiment group, versus (135.77±4.12) mmHg and (84.07±4.08) mmHg in the control group.The between-group differences in the SBP and DBP after treatment were statistically significant (P<0.05). After treatment, the SBP in the experiment group dropped by (17.27±6.08) mmHg and the DBP dropped by (6.48±5.69) mmHg, versus (12.36±5.54) mmHg and (2.73±4.66) mmHg in the control group. There were significant differences in the decreases of SBP and DBP between the two groups (P<0.05). Conclusion Acupuncture plus intradermal needle can produce satisfactory effect in down-regulating the blood pressure in patients with mild essential hypertension.

Progressesin endothelial progenitor cells derived extracellular vesicles / 医学研究生学报

Endothelial progenitor cells (EPCs) play an important role in angiogenesis and tissue repair, which have been used to treat various kinds of diseases associated with poor perfusion or organ dysfunction. In recent years, researches had shown that extracellular vesicles(EVs) are the important paracrine components of cells. They carry the protein, mRNA, miRNA and other bioactive substances from the original cells to the target cells, yielding a similar effect to stem cell transplantation. The effects of extracellular vesicles derived from endothelial progenitor cells (EPCs-EVs) have been explored in cardiovascular diseases, diabetes mellitus, and renal injury et al. This review covers the biological characteristics of EVs, the application and mechanism of EPCs-EVs in these studies.

Research progress of mitophagy in ophthalmic related diseases / 国际眼科杂志(Guoji Yanke Zazhi)

·Mitophagy is a selective autophagy refers to the autophagy process by which cells selectively remove mitochondria. Mitophagy plays important roles in clearing up dysfunctional mitochondria, reducing mitochondrial numbers and maintaining cell homeostasis. Its molecular mechanisms involve several proteins such as PINK1/Parkin, BNIP3, NIX, and FUNDC1. Mitochondrial dysfunction or damage may cause serious consequences, and may even lead to cell death. Studies have shown that disfunction of mitophagy is related to many eye diseases, for instance, cataract, glaucoma, age-related macular degeneration,diabetic retinopathy,etc. This review deals with the mechanisms of mitophagy and its research on ocular diseases.

San-Cao Granule () Ameliorates Hepatic Fibrosis through High Mobility Group Box-1 Protein/Smad Signaling Pathway / 中国结合医学杂志

<p><b>OBJECTIVE</b>To investigate the possible mechanism of San-Cao Granule (SCG, ) mediating antiliver fibrosis.</p><p><b>METHODS</b>A total of 60 male Sprague-Dawley rats were randomly divided into the normal control group, porcine serum-treated group, ursodesoxycholic acid (UDCA, 60 mg/kg), SCG (3.6 g/kg) group, SCG (1.8 g/kg) group and SCG (0.9 g/kg) group, with 10 rats in each group. Liver fibrosis was induced with porcine serum by intraperitoneal injection for 8 weeks, except for the normal control group. Then, the rats in the three SCG-treated groups and UDCA group were administered SCG and UDCA respectively for 4 weeks. The serum levels of alanine transaminase (ALT), aspartate transaminase (AST), albumin (ALB), total bilirubin (TBIL), hyaluronic acid (HA), laminin (LN), and type IV collagen (IVC) were examined using commercial kits and hepatic histopathology was examined with hematoxylin and eosin and Masson staining. Moreover, the protein expression levels of high mobility group box-1 protein (HMGB1), transforming growth factor β1 (TGF-β1), phosphorylated mothers against decapentaplegic homolog 3 (p-Smad3), Smad7, toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88), nuclear factor-kappa B (NF-κB) and α-smooth muscle actin (α-SMA) were determined by western blot, immunohistochemistry and real time quantitative-reverse transcription polymerase.</p><p><b>RESULTS</b>Both SCG (3.6 and 1.8 g/kg) and UDCA significantly ameliorated the liver fibrosis induced by porcine serum as indicated by retarding the serum levels increasing of ALT, AST, TBIL, HA, LN and IVC and preventing the serum level reducing of ALB compared with the model group (all P<0.01). Meanwhile, the collagen deposition was attenuated by SCG and UDCA treatment. Furthermore, SCG markedly reduced the expressions of HMGB1, TGF-β1, p-Smad3, TLR4, MyD88, NF-κB and α-SMA, and enhanced the expression of the Smad7 compared with the model group (all P<0.01).</p><p><b>CONCLUSION</b>SCG ameliorates hepatic fibrosis possibly through inhibiting HMGB1, TLR4/NF-κB and TGF-β1/Smad signaling pathway.</p>

Effect of Health Education Based on Integrative Therapy of Chinese and Western Medicine for Adult Patients with Type 2 Diabetes Mellitus: A Randomized Controlled Study / 中国结合医学杂志

<p><b>OBJECTIVE</b>To investigate the effects of health education based on integrative therapy of Chinese and Western medicine for type 2 diabetes mellitus (T2DM) from the aspects of knowledge, attitude and practice (KAP), health-related quality of life (HRQoL), body mass index (BMI) and glucose control.</p><p><b>METHODS</b>Patients were individually randomized into intervention group (receiving integrative education, n=120) and control group (receiving usual education, n=120). The primary outcome was the changes in glycosylated hemoglobin A1c (HbA1c) levels after 3, 6, 9 and 12 months from baseline. Hierarchical linear models (HLMs) were used to assess within-group changes in outcomes over time and between-group differences in patterns of change. Secondary outcomes were KAP scores, HRQoL scores and BMI after 6 and 12 months, paired-sample t test was used to assess within-group changes in outcomes in 6 and 12 months, independent-sample t test was used to assess between-group differences in patterns of change.</p><p><b>RESULTS</b>HbA1c decreased statistically from baseline to 3 months, from 3 to 6 months, from 6 to 9 months and from 9 to 12 months in the intervention group (all P<0.01); and decreased significantly from baseline to 3 months, and from 3 to 6 months in the control group P<0.01). There was a significant between-group difference from baseline to 3 months (P=0.044), from 6 to 9 months (P<0.01) and from 9 to 12 months (P<0.01). Significant improvements in the intervention group along with significant between-group differences were found in KAP and HRQoL scores respectively (all P<0.05). The number in the intervention group of normal weight increased from 56 at baseline to 81 (6 months), 94 (12 months), the number in the control group were 63 (baseline), 69 (6 months), 70 (12 months), the χof hierarchical analysis of BMI were 6.93 (P=0.075), 10.31 (P=0.016), 15.53 (P<0.01), respectively.</p><p><b>CONCLUSION</b>Health education based on integrative therapy of Chinese and Western medicine is beneficial to the control of T2DM and should be recommended for T2DM.</p>

Clinical and epidemiological characteristics of laboratory confirmed cases of severe fever with thrombocytopenia syndrome infection in Shandong Province, China / 中国人兽共患病学报

We investigated the clinical and epidemiological characteristics of laboratory confirmed cases of severe fever with thrombocytopenia syndrome (SFTS) in Shandong Province,China.A descriptive epidemiological method combined with case investigation was used in this study.Cases information were collected by standard questionnaire and analyzed by Epidata3.1,SPSS 17.0 and ArcGIS10.0 software.Results showed that a total of 154 cases were analyzed and the case fatality rate was 7.1％.Epidemic peak was from May to October,the high incidence areas were located in the middle and east hilly areas of Shandong Province.The characteristic of SFTS cases were farmers (93.5％),and the age was over 40 years.Most of them were living in the hilly areas (85.7 ％),and had outdoor activities within the previous 2 weeks prior to fever onset (83.8 ％).The 16.8％ of them had tick bites history.Tick carrying rates of sheep,cattle,dogs and cats were 66.7％,40％,34.3％ and 12.5％,respectively.Directly contact with bloody secretion of SFTS death cases can be infected with the disease.Major symptoms include high fever (98.1％),anorexia (90.9 ％),fatigue (53.3％),thrombocytopenia (73.4 ％) and leukocytopenia (60.4 ％).The 35.7 ％ cases need to go through more than three referrals for treatment,the interval time between onset and diagnosis was 5 days(3-15),only hospitals above county level can make the correct diagnosis of the disease.Compared with survival patients,the death cases were elderly patients (t =2.03,P=0.044) and with bleeding performance (x2 =13.09,P＜0.01).In conclusion,SFTS is a severe disease with high mortality.Living hilly environment,doing agricultural labor,feeding animals,tick carrying rates of animals and direct contacting with bloody secretion of deaths maybe possible risk factors.To reduce morbidity and mortality of SFTS,measures should be carried out to propagandize the basic knowledge for SFTS prevention and control and to improve the medical treatment skills of doctors in the epidemic foci.

Evaluation of genetic diversity and population structure of genus Tripterygium based on SSR markers / 药学学报

The genus Tripterygium is an immune suppressor in the Chinese traditional medicines. Due to the habitat destruction and anthropogenic over-exploitation, the wild genus Tripterygium plants have decreased dramatically in recent years or even been endangered. It is critical to evaluate and protect genus Tripterygium wild resource. In this research, simple sequence repeat (SSR) molecular markers were applied to the investigation of the genetic diversity and genetic structure of 28 populations for genus Tripterygium (396 samples from 9 provinces in China). We found a high level of genetic diversity (percentage of polymorphic loci PPL=77.29%, Shannon's information index I=0.639 4; Nei's expected heterozygosity H=0.359 9) and high genetic differentiation among the populations (gene flow Nm=0.228 7). Based on Nei's genetic distance, the phylogenic tree of populations was constructed and 28 populations were divided into 6 clusters according to STRUCTURE clustering analysis. T. hypoglaucumwas was mainly divided into 3 clusters, including Sichuan, Yunnan and GuizhouChongqing. T. regelii was separated to cluster 4, while T. wilfordii was divided into two clusters:the transition type LQ and NY were divided into cluster 5, and the others were in cluster 6. These results provide a theory basis for the conservation of wild resource, research of genetic polymorphism and molecular marker for assisted breeding of genus Tripterygium.

Studies on difference of chemical compositions in plant species of Tripterygium genus / 中国中药杂志

We studied the content of chemical compositions and correlation among species of Tripterygium genus by principal component analysis(PCA) and variance analysis(ANOVA), and we also studied the difference among the 3 species.Using [BMIm]PF6 ionic liquid-based ultrasonic-assisted extraction, we determined the contents of 11 compounds including wilforgine, wilforzine, triptophenolide, wilforine, triptoquinone A, triptolide, tripterin, egallocatechin, epigallocatechin, catechin, and epicatechin in 28 batches of the Tripterygium species by HPLC and PCA. Partial least squares analysis (PLS) and ANOVA were also performed to verify the results.The analysis results of PCA and PLS showed that three species of Tripterygium genus were clustered into three regions respectively, and triptoquinone A was the important factor which affected the aggregation of these three species.There was a significant difference among the contents of 11 chemical components in the three species(P<0.000 1).These results indicated that there was a certain correlation between the chemical compositions and the classification of the species, and the difference of the chemical compositions among the three species was obvious. In this work, the content determination method is rapid and accurate, and the analysis method is simple and convenient, which provides a reference for the classification, the efficacy and the toxicity of the species.

Autologous Peripheral Blood Hematopoietic Stem Cell Transplantation with IBu Precondition Regimen in Treatment for 11 Patients with Low to Intermediate Risk Acute Myeloid Leukemia / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To evaluate safety and efficacy of autologous peripheral blood hematopoietic stem cell transplantation (auto-PBHSCT) with IBu precondition regimen consisting of high-dose idarubicin (IDA) and busulphan (Bu) for treatment of patients with low and intermediate risk acute myeloid leuekmia (AML).</p><p><b>METHODS</b>A total of 11 patients with AML (5 low and 6 intermediate risk patients) treated with auto-PBHSCT with IBu precondition regimen (IDA 20 mg/m, continuous i.v. from d-13 to d-11, Bu 0.8 mg/kg/q6h i.v. for 2h, from d-5 to d-2) from March 2011 to July 2014 were analyzed retrospectively. Adverse effects and transplantation-related mortality (TRM) were evaluated. Kaplan-Meier analysis was performed to calculate the overall survival (OS), disease-free survival (DFS) and cumulative relapse rate (RR). Cox regression was performed for univariate analysis for DFS.</p><p><b>RESULTS</b>Among the 11 patients, 10 patients obtained hematopoietic reconstitution, 1 patient died during transplantation, thus the TRM was 9.1%. The adverse effects were well tolerated. With median follow-up of 31.6 (8.7-52.5) months, 7 patients (63.3%) were alive, including 6 patients (54.5%) in continuous complete remission (CR). Median OS and DFS were not reached. The 3-year OS, DFS and RR were (57.7±16.3)%, (52.5±17.6)% and 47.5%, respectively. Univartiate analysis indicated that the age, sex, interval between diagnosis and transplantation, white blood cell count at diagnosis, risk-grouping (low or intermediate risk), disease status before transplantation (CR1 or CR2), and count of mononuclear cells for infusion all can not influence DFS(P>0.05, respectively).</p><p><b>CONCLUSION</b>The treatment of auto-PBHSCT with IBu precondition regimen for low to intermediate risk AML patients is safe and effective.</p>

Chemical constituents from Mylabris phalerata and their cytotoxic activity in vitro / 中国中药杂志

Ten compounds were isolated from Mylabris phalerata by using preparative HPLC and column chromatography over MCI gel. On the basis of physical-chemical properties, NMR and MS data analysis, the compounds were identified as 5'-[(1 R,2 R,3 S,6R)-1-hydroxymethyl-2-methyl-3,6-epoxycyclohexane-1,2-dicarboximide]- ethyl-2'-methyl-2'-butenoate (1),cantharidin (2), cyclo-(L-Pro-L-Ala) (3), cyclo-(R-Pro-R-Leu) (4), cyclo-(S-Pro-R-Leu) (5), cyclo-(D-Pro-L-Tyr) (6), indole-3-aldehyde (7), 3-indoleacetic acid (8), valerolactam (9), and 4-hydroxyphthalid (10).Compound 1 was a new compound, and compounds 2-10 were obtained from this genus for the first time. Compounds 1-9 were subjected to cytotoxic activity on HCT-116, HepG2, BGC-823, NCI-H1650, A2780 cell lines, and only compound 2 showed inhibitory effect on all cancer cell lines.

Simultaneous determination of 5 compounds in Tripterygium hypoglaucum based on ultrasound-assisted ionic liquid coupled with HPLC / 中国中药杂志

Using six kinds of ionic liquids as extractants, ultrasonic-assisted extraction coupled with HPLC method was developed for the simultaneous determination of wilforgine, wiforizine, triptophenolide, wilforine and triptoquinone A in Tripterygium hypoglaucum. The separation was performed on an Inertsil ODS-4 column with the mobile phase of acetonitrile-0.1% phosphoric acid in gradient elution at a flow rate of 0.75 mL•min⁻¹. Detection wavelength was 220 nm and the column temperature was 30℃. Under the optimal extractions, the results showed that triptophenolide and triptoquinone A had the highest extraction yield by using 0.6 mol•L⁻¹ [BMIm]PF6 methanol solution as extraction solvent with the solid-liquid ratio of 1∶10. The calibration curves of triptophenolide and triptoquinone A showed a good linearity in the range of 0.000 65-0.026, 0.066 55-2.662 μg (r=0.999 9)respectively. The average recovery was 102.4% and 97.90% with RSD of 2.5% and 1.5%, respectively. Wilforgine, wiforizine and wilforine had the highest extraction yield when using 0.6 mol• L⁻¹ [BMIm]PF6absolute ethanol solution as extraction solvent with the solid-liquid ratio of 1∶10. The content of wilforgine, wiforizine and wilforine from 0.023 9-0.956, 0.002 7-0.108, 0.006 4-0.256 μg showed a good linearity (r=0.999 9), and the average recovery was 100.6%,99.50% and 98.70% with RSD of 2.1%,1.9% and 2.7%, respectively. The results indicated that this method is convenient, reliable and green, and can be used as a reliableanalytical method for the quality control of T.hypoglaucum.

High glucose on the expression of N -cadherin and fibronectin in retinal pigment epithelium cells / 国际眼科杂志(Guoji Yanke Zazhi)

To observe the expression of N - cadherin and fibronectin in retinal pigment epithelium ( RPE) cells in vitro under high glucose conditions, furthermore, to explore the effects of high glucose on epithelial -mesenchymal transition (EMT) in RPE cells. ●METHODS: Human RPE (hRPE) cells were cultured in vitro. Containing a final concentration of 60mmol/ L glucose was used for high glucose treatment. The cells were divided into normal glucose group (5. 5mmol/ L, NG) and high glucose group (24, 48 and 72h) respectively. The expression of N - cadherin and fibronectin in hRPE cells were evaluated by immunofluorescence and real -time PCR. ●RESULTS:RPE cells became disorganized and swollen over time under high glucose conditions, especially in 72h subgroup. lmmunohistochemical analysis revealed that the expression of N - cadherin in RPE cells under high glucose conditions was decreased compared with that in the control group, while the expression of fibronectin was increased. Real - time PCR results showed that the expression of N - cadherin mRNA in high glucose group was decreased at 24h compared with that in the control group, and declined markedly at 72h ( F = 12. 252, P =0. 000). There were no significant differences between the control group and the high glucose group at 24h, while the differences between the control group and the high glucose group (48 and 72h) were significant respectively (P ●CONCLUSlON: The expression of epithelium marker N-cadherin is down - regulated under high glucose conditions in hRPE cells in vitro. Meanwhile, the expression of mesenchymal maker fibronectin is induced and appeared to EMT changes. Results of this study will enrich our growing understanding in proliferative diabetic retinopathy and hopefully lead to novel insights for the pathogenesis and therapeutic treatments.

Safety and effectiveness of tumor-ablative chemotherapy combined with low intensity modified conditioning regimen for 30 patients with hematologic malignancies receiving allogeneic hematopoietic stem cell transplantation / 中国实验血液学杂志

This study was aimed to investigate the safety and effectiveness of tumor-ablative Chemotherapy combined with low intensity conditioning regiment BUCy/TBICy for patients with hematologic malignancies receiving allogeneic hematopoietic stem cell transplantation (allo-HSCT). The clinical data of 30 patients with hematologic malignancies received above-mentioned therapeutic method from January 2012 to January 2013 was analyzed retrospectively, and the engraftment, GVHD, infection, conditioning-related toxicity, relapse and survival rates were evaluated. All the patients signed the informed consent before transplantation. The median follow-up duration was 20.5 (16.3-27.3) months. The results indicated that all the patients had been engrafted successfully. One year overall survival (OS) and disease-free survival (DFS) rates were 93.3% and 83.3% respectively. No conditioning-related toxicity occurred. The incidences of II-IV grade aGVHD was 37.9%, among which incidence of III-IV grade aGVHD was 3.4%; incidence of extensive cGVHD was 13.8%. So far, 1 case relapsed, 1 case displayed graft rejection, and poor function of graft occurred in 1 case, death occurred in 2 cases(6.7%). It is concluded that tumor-ablative chemotherapy combined with low intensity-modified BUCy/TBICy is safe and effective in allogeneic hematopoietic stem cell transplantation for hematologic malignancies, and it is useful to reduce relapse of hematologic malignancies after transplantation.

Clinical characteristics and mutation analysis of the LKB1 gene in a Peutz-Jeghers syndrome pedigree / 中华儿科杂志

<p><b>OBJECTIVE</b>To investigate clinical characteristics and mutation of the LKB1 gene in a Peutz-Jeghers syndrome (PJS) pedigree.</p><p><b>METHOD</b>Clinical data of a PJS family were analyzed and LKB1 gene mutation was detected by systematic screening with multiplex ligation-dependent probe amplification (MLPA) and DNA sequencing. Meanwhile, two hundred and fifty healthy adults were enrolled in this study and denaturing high performance liquid chromatography (PCR-DHPLC) was carried out to verify the mutation excluding polymorphism sites found in this family. Changes in protein structure and function caused by the mutated coding sequence was analyzed by SWISS-MODEL software.</p><p><b>RESULT</b>The proband had pigmented mucocutaneous lesions and multiple hamartomatous polyps in the gastrointestinal tract. There was no fragment deletion of LKB1 gene detected by MLPA. Among PJS family and 250 healthy adults, germline mutation c. 924G > C of LKB1 which cause Trp308Cys in protein sequence was identified only in the proband and another affected member. LKB1 protein activity could be reduced due to changes in LKB1 protein conformation structure by Trp308Cys.</p><p><b>CONCLUSION</b>Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterised by mucocutaneous pigmentation, multiple gastrointestinal hamartomatous polyps and heredofamilial nature. Gene identification and mutagen screening of LKB1 gene in all PJS patients and first degree relatives will contribute to a definite diagnosis and improve the life span of the family.</p>

Expression of TIM-1 and TIM-3 in spleen mononuclear cells and their role in Th1 polarization in primary immune thrombocytopenia patients / 中华血液学杂志

<p><b>OBJECTIVE</b>To explore the expression and clinical significance of T cell immunoglobulin mucin (TIM)-1, TIM-3 and T cell-specific transcription factors T-bet and GATA-3 in spleen mononuclear cells in patients with primary immune thrombocytopenia (ITP).</p><p><b>METHODS</b>The spleen samples were obtained from 17 active ITP patients and 10 controls with spleen traumatic rupture. By using real-time quantitative polymerase chain reaction, the mRNA expressions of TIM-3, TIM1, T-bet and GATA-3 were studied in all subjects.</p><p><b>RESULTS</b>TIM-3 mRNA levels of active ITP patients were significantly decreased to (29 ± 16)% of that of control, TIM-1 mRNA levels of active ITP patients increased to (3.20 ± 2.18) folds of that of control, but the difference was not significant. The ratio of TIM-1/ TIM-3 was elevated in active ITP patients. T-bet mRNA levels were up-regulated in ITP patients by (2.82 ± 1.57) folds (P<0.05) and the expression of GATA3 was decreased by 14% folds (P<0.05) compared to controls. The ratio of T-bet/GATA3 were significantly elevated in ITP patients.</p><p><b>CONCLUSION</b>The imbalance between TIM-3 and TIM-1 expression might play an important role in pathogenesis of ITP.</p>

Establishment of a fluorescence-labeled human ovarian cancer cell line / 第二军医大学学报

Objective To establish a human ovarian cancer cell line stably expressing enhanced green fluorescent protein(EGFP), so as to carry out visualized research on whole ovarian cancer. Methods We transfected human ovarian cancer cell line HO8910PM by gene transfection, and obtained cells stably expressing EGFP by sub-cloning amplification and selection with G418-resistance.The expression rate of EGFP was analyzed by flow cytometry (FC).The growth curve, adhesion, migration and invasion experiments were employed to study the biological behaviors of the cells transfected with EGFP. Results Flow cytometry results showed that EGFP positive rate of screened EGFP-HO8910PM cells was higher than 99%. The cell growth, adhesion, invasion and migration abilities of cells were not significantly changed after transfection. Conclusion We have successfully established a cell line EGFP-HO8910PM stably expressing EGFP and at mean time maintaining the characteristics of the parent cell line, which lays a foundation for whole-body visualization research of human ovarian cancer in vivo.

Mutation screening of LKB1 gene in familial Peutz-Jeghers syndrome patients / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To screen for potential mutations of LKB1 gene in Chinese familial Peutz-Jeghers syndrome (PJS) patients and analyze their clinical manifestations.</p><p><b>METHODS</b>Eleven PJS families were collected and genomic DNA of peripheral blood was extracted. Typically mucosal pigmentation and hamartomatous polyps were present in all 11 probands. Mutation screening of the probands were carried out by PCR and direct sequencing. Two hundred and fifty healthy adults were enrolled as normal controls, for whom genomic DNA of peripheral blood was also extracted. PCR-denaturing high performance liquid chromatography was carried out to verify the mutation identified in the patients.</p><p><b>RESULTS</b>Nine germline mutations were identified in eight PJS patients, which included 7 point mutations, 1 deletion and 1 insertion. Among these, 4 were considered to be pathogenic, of which 2 were de novel, 4 were considered to be polymorphism, and 1 was uncertain.</p><p><b>CONCLUSION</b>LKB1 gene mutations with pathogenic effect are a common cause of familial PJS in Chinese patients. Most mutations are point mutations.</p>