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Objective To investigate the mutation characteristics of drug resistance genes of multidrug-resistant mycobacterium tuberculosis in Wuhan, and to provide evidence for molecular diagnosis of drug-resistant tuberculosis. Methods Whole-genome sequencing was performed on 149 isolates collected from Wuhan Pulmonary Hospital in 2017 to obtain the specific mutation of genotype or subtype of H37Rv and the drug-resistant gene mutation of anti-TB drugs. The correlation between major mutation types and genotypes or subtypes was analyzed. Results Among the 149 strains, the major mutation types of resistance-related genes to common anti-tuberculosis drugs were katG Ser315Thr (65.77%, isoniazid), ropB Ser450Leu (62.42%, rifampicin), rpsL Lys43Arg (46.31%, streptomycin), embB Met306Val (20.13%, ethambutol), pncA -11 T>C (3.36%, pyrazinamide), gyrA Ala90Val (10.07%, ofloxacin) , rrs -1401 A> G (4.70%, second-line injectable drugs), fabG -15C>T (14.09%, ethionamide), and folC Ile43Thr (3.36%, paza-aminosalicylate). Nine strains of ahpC-OxyR mutation (isoniazid resistance compensatory mutation) and five strains of ropC gene mutation (rifampicin resistance compensatory mutation) were found. The mutation frequency of embB Met306Ile of L4 strain was higher than that of L2, and the mutation frequency of rpsL Lys43Arg was lower than that of L2 (P < 0.05). The difference of mutation frequency of other sites was not statistically significant. The mutation frequency of thyA His75Asn in the ancient subtype was higher than that in the modern type (P<0.05). Conclusion The mutation of MDR-TB isolates in Wuhan displays genetic diversity and should be detected by whole genome sequencing rather than targeted molecular approaches, which may miss some mutations. Some mutation types of MDR-related genes are related to the genotype and subtype of the strains.
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Objective:To investigate the protective effect and molecular mechanism of Angelicae Sinensis Radix-Chuanxiong Rhizoma medicated serum （ASRCRS） against oxidative damage of PC12 cells induced by H<sub>2</sub>O<sub>2</sub>. Method:Oxidative damage of PC12 cells was induced by H<sub>2</sub>O<sub>2</sub><italic> in vitro</italic>， and intervention was performed in the low-， medium-， and high-dose ASRCRS groups with a final volume fraction of 15%. The cell viability was determined by methyl thiazolyl tetrazolium （MTT） assay. Cell morphology was observed by an inverted fluorescence microscope. The content of lactate dehydrogenase （LDH） and malondialdehyde （MDA）， the activity of superoxide dismutase （SOD）， and the distribution of reactive oxygen species （ROS） in the cell supernatant were detected by the kits. Cell apoptosis was detected by Annexin V-FITC/PI double staining. The protein expression levels of nuclear factor E<sub>2</sub>-related factor 2 （Nrf2）， Kelch-like epichlorohydrin associated protein-1 （Keap1）， heme oxygenase-1 （HO-1）， and SOD1 were detected by Western blot. Result:Oxidative damage was induced by 300 μmol·L<sup>-1</sup> H<sub>2</sub>O<sub>2</sub> for 24 hours. Compared with the normal group， the model group showed abnormal cell morphology， reduced cell viability （<italic>P</italic><0.01）， increased LDH and MDA （<italic>P</italic><0.01）， blunted SOD activity， elevated intracellular distribution of ROS， down-regulated protein expression of Nrf2， HO-1， and SOD1 （<italic>P</italic><0.05， <italic>P</italic><0.05）， and up-regulated protein expression of Keap1 （<italic>P</italic><0.01）. Compared with the model group， ASRCRS groups displayed improved cell morphology， increased cell viability， inhibited cell apoptosis， potentiated SOD activity （<italic>P</italic><0.01）， suppressed release of LDH （<italic>P</italic><0.01） and generation of ROS， decreased content of MDA （<italic>P</italic><0.01）， up-regulated protein expression of Nrf2， HO-1 and SOD1 （<italic>P</italic><0.05， <italic>P</italic><0.01）， and down-regulated protein expression of Keap1 （<italic>P</italic><0.01）. Conclusion:ASRCRS could protect PC12 cells from oxidative damage induced by H<sub>2</sub>O<sub>2</sub> by up-regulating the expression of Nrf2 to activate the Nrf2/antioxidant response element （ARE） signaling pathway， enhancing the ability to resist oxidative damage， and inhibiting cell apoptosis.
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OBJECTIVE@#To explore the synergistic immunomodulatory mechanism of interferon alpha-1b, interleukin-2 and thalidomide (ITI) regimen on patients with acute myeloid leukemia (AML).@*METHODS@#Sixty eight untreated de novo or relapsed or refractory or maintenance therapy patients with AML admitted in the Affiliated Cancer Hospital of Zhengzhou University and the other 11 medical units from March 2016 to May 2019 were treated with ITI regimen. Peripheral blood specimen per patient was collected into EDTA-K3 anticoagulation vacuum tube before the administration of ITI and 3 months after the treatment; peripheral blood lymphocyte subsets and perforin and Granzyme B expression were analyzed by using flow cytometry; the levels of VEGF, IFN-γ, TNF-α and IL-6 in the plasma were detected by using a cytometric bead array. Thirty-five healthy subjects from the hospital physical examination centre were selected as normal controls.@*RESULTS@#The ratio of CD4@*CONCLUSION@#The ITI regimen can raise the ratio of CD4
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CD8-Positive T-Lymphocytes , Humans , Interferon-alpha , Interleukin-2 , Leukemia, Myeloid, Acute/drug therapy , Perforin , ThalidomideABSTRACT
Background:Malnutrition is common in patients with cancer, whichadversely affectsthesurvival and quality of life ofcancer patients.However, there is no national data on the prevalence of malnutrition inChinese cancer patients. Thisstudy aims to evaluate the prevalenceof malnutrition and quality of life(QOL)ofChinese patients with localregional, recurrentor metastatic cancer,to address the prognostic value of nutritional status and QOLon the survival of cancer patients in China and to validate the patient-generated subjective global assessment (PG-SGA) questionnaire in Chinese cancer patients.Methods:Thisisanobservational,multi-centered,and hospital-based prospective cohort study.We aimed to recruit 50,000 cancer patients (age 18and above)overan 8-year period.Data collection will occur within 48hrafter patientsare admitted to hospital, 30-days after hospital admission, and the follow-up will be conducted1-8years after enrolment. The primary outcomeisoverall survival, and secondaryoutcomes arelength of hospital stay and hospital costs. Factors measured are demographic characteristics, tumor characteristics, anthropometry measurements,hematological measurement, body composition, PG-SGAscores,Karnofsky performance status scores,and QLQ C30 scores. This protocol wasapproved by local ethical committees of all the participant hospitals.Conclusions: This multi-centered, large-scale, long-time follow-up prospective study will help diagnose malnutrition in cancer patients in China, and identify the related risk factors associated with the negative outcomes. The anticipated results will highlight the need for a truly scientific appraisal of nutrition therapy, and help to improve outcomes among cancer patients in China.Trial Registration: The trial has been registered with the Chinese Clinical Trial Registry, ChiCTR1800020329. Registered on 19 December 2018
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OBJECTIVE@#To explore the association between two single nucleotide polymorphisms (SNPs), namely, rs4691383 and rs7667857, in the platelet-derived growth factor-C (PDGF-C) gene, the genotypes, environmental exposure factors, and nonsyndromic cleft lip with or without cleft palate (NSCL/P) in Western Chinese population.@*METHODS@#A total of 268 case-parent trios were selected, and two SNPs (rs4691383 andrs7667857) were genotyped by using polymerase chain reaction and restriction enzyme fragment length polymorphic method and direct sequencing method. Hardy-Weinberg equilibrium, linkage disequilibrium test, transmission disequilibrium test, and haplotype analysis were conducted to analyze the data. Meanwhile, the questionnaires on the epidemiology of cleft lip and palate filled by the included samples were collected, and the interaction between the genotypes of the two SNPs and environmental exposure factors was assessed by conditional logistic regression.@*RESULTS@#The A allele at rs4691383 and the G allele at rs7667857 of PDGF-C gene were over-transmitted for NSCL/P (P0.05).@*CONCLUSIONS@#The rs4691383 and rs7667857 at PDGF-C gene are closely related to the occurrence of NSCL/P in Western Chinese population. However, the interaction between environmental exposure factors and PDGF-C genotypes is not obvious in the occurrence of NSCL/P.
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Case-Control Studies , Cleft Lip , Cleft Palate , Genetic Predisposition to Disease , Genotype , Humans , Lymphokines , Platelet-Derived Growth Factor , Polymorphism, Single NucleotideABSTRACT
Objective::To observe the clinical efficacy of dialectical therapy of Bufeitang combined with Shengesan and Fujiu application on chronic obstructive pulmonary disease (COPD) and lung-kidney Qi deficiency syndrome, and its effect on inflammatory damage and airway remodeling. Method::One hundred and thirty-four patients were randomly divided into control group (66 cases) and observation group (68 cases) by random number table. Patients in control group got spiriva by powder inhaler, 1 grain/time, 1 time/day, and salmeterol xinafoate and fluticasone propionate powder for inhalation for spray as appropriate, 1 suction/time, 1-2 times/days, for a continued 12 months. In addition to the therapy of control group, patients in observation group were also given Fujiu application at two-tailed acupoints of Feiyu, Piyu and Shenyu for the first day of the every San Fu and San Jiu, and dialectical therapy of Bufeitang combined with Shengesan were given at the first day of San Fu and San Jiu for 2 months. The course of treatment was 12 months. Before and after treatment, FEV1% of self-assessment questionnaire of patients with COPD (CAT), 6-min walking distance, St George's respiratory questionnaire (SGRQ), severity of dyspnea (mMRC) and index of BODE were assessed. And levels of tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), matrix metalloproteinase-9 (MMP-9) and matrix metalloproteinase inhibitor-1 (TIMP-1) were detected. Result::After treatment, scores of CAT, the total score of SGRQ, scoring of each dimension and index of BODE in observation group were all lower than that in control group (P<0.01), while FEV1% was higher than that in control group (P<0.01). And 6-min walking distance was more than that in control group (P<0.01), and the numbers of acute exacerbations were less than that in control group (P<0.01). The severity of dyspnea was lighter than that in control group (Z=2.047, P<0.05). And levels of MMP-9, TNF-α, IL-6 and ratio of MMP-9/TIMP-1 were lower than those in control group (P<0.01), whereas the level of TIMP-1 was higher than that in control group (P<0.01). Conclusion::Dialectical therapy of Bufei decoction combined with Shenge powder and Fujiu application can alleviate the current symptoms of dyspnea, improve exercise tolerance, quality of life and pulmonary function, reduce the number of acute exacerbations, relieve inflammation damage and airway remodeling. The comprehensive clinical efficacy is better than that of conventional western medicine.
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Objective::To discuss the efficacy of compound Huangteng mixture for acute radiation enteritis (ARE) and to investigate its regulatory effect on serum inflammatory factors. Method::One hundred and forty patients were randomly divided into control group (70 cases) and observation group (70 cases) by random number table. Patients in control group got precise radiotherapy. And take montmorillorillonite powder orally based on the treatment in control group, patients in observation group additionally received compound Huangteng mixture, 1 dose/day. The treatment was continued to the second week after the ending of radiotherapy in both groups. Time of appearance of ARE (1 and 2 levels), irradiation dose and incidence of severe ARE (3 and 4 levels) were recorded. Endoscope examination was conducted at the second week after the ending of radiotherapy. ARE symptom scores and KPS scores of quality of life were graded. Levels of serum interleukin-1 (IL-1), IL-4, IL-6, tumor necrosis factor-α (TNF-α) and C-reactive protein (CRP) were detected both before and after treatment. Result::Time of appearance of ARE (1 and 2 levels) in observation group was shorter than those in control group (P<0.01), and irradiation dose was more than that in control group (P<0.01). At the fourth and fifth week of radiotherapy and at the second week after the ending of radiotherapy, incidence rate of ARE (levels 2 and above) was 42.86%(30/70), 50.00%(35/70) and 54.29%(38/70), all lower than 61.43%(43/70), 68.57%(48/70) and 74.29%(52/70) in control group (χ2=4.837, P<0.05, χ2=5.001, P<0.05, χ2=6.097, P<0.05). After radiotherapy, incidence of ARE was 62.86%(44/70) in observation group, lower than 78.57%(55/70) in control group (χ2=4.173, P<0.05), and the incidence of severeARE was 13.64%(6/44) in observation group, lower than 32.73%(18/55) in control group (χ2=4.851, P<0.05). Scores of endoscope and ARE symptoms in observation group were lower than those in control group, while score of KPS was higher than that in control group (P<0.01). After radiotherapy, levels of IL-1, IL-6, TNF-α and CRP in observation group were lower than those in control group (P<0.01), while level of IL-4 was higher than that in control group (P<0.01). Conclusion::Compound Huangteng mixture combined with radiotherapy can reduce the incidence of ARE, postpone the occurrence of ARE, relieve the severity of ARE, regulate the expression of inflammatory factors, alleviate clinical symptoms, and improve the quality of life in patients withradiotherapy, thus it is conducive to the sequential development of radiotherapy.
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BACKGROUND: We examined changes in hepatitis B core-related antigen (HBcrAg) during the four sequential phases of chronic hepatitis B virus (HBV) infection: hepatitis B e antigen (HBeAg)-positive chronic infection (EPCI) and hepatitis (EPCH), followed by HBeAg-negative chronic infection (ENCI) and hepatitis (ENCH). We compared the performance of serum HBcrAg, hepatitis B surface antigen (HBsAg), and HBV DNA in predicting EPCH and ENCH. METHODS: We enrolled 492 consecutive patients: 49 with EPCI, 243 with EPCH, 101 with ENCI, and 99 with ENCH. HBcrAg was detected by chemiluminescent enzyme immunoassays. HBsAg and HBeAg were detected by chemiluminescent microparticle immunoassays. HBV DNA was detected by real-time PCR. Predictive performance of HBcrAg, HBsAg, and HBV DNA was evaluated using ROC curves. RESULTS: Areas under ROC curves (AUCs) of HBcrAg, HBsAg, and HBV DNA for predicting EPCH were 0.738, 0.812, and 0.717, respectively; optimal cutoffs were ≤1.43×105 kU/mL, ≤1.89×104 IU/mL, and ≤3.97×107 IU/mL, with sensitivities and specificities of 66.3% and 77.6%, 65.0% and 93.9%, and 60.5% and 79.6%, respectively. AUCs of HBcrAg, HBsAg, and HBV DNA for predicting ENCH were 0.887, 0.581, and 0.978, respectively; optimal cutoffs were >26.8 kU/mL, >2.29×102 IU/mL, and >8.75×103 IU/mL, with sensitivities and specificities of 72.7% and 95.1%, 86.9% and 39.6%, and 89.9% and 92.1%, respectively. CONCLUSIONS: HBsAg and HBV DNA were the best predictors of EPCH and ENCH, respectively. HBcrAg is an important surrogate marker for predicting EPCH and ENCH.
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Area Under Curve , Biomarkers , DNA , Hepatitis B e Antigens , Hepatitis B Surface Antigens , Hepatitis B virus , Hepatitis B , Hepatitis B, Chronic , Hepatitis , Hepatitis, Chronic , Humans , Immunoassay , Immunoenzyme Techniques , Real-Time Polymerase Chain Reaction , ROC CurveABSTRACT
Objective: To investigate the role of BBS protein in ciliary signal transduction by studying the pro- karyotic expression, purification and polyclonal antibody preparation of Chlamydomonas reinhardtii protein BBS4. Methods: Prokaryotic Expression Vector pET-28a(+)-bbs4 and pMAL-c2X-bbs4 were constructed by the cDNA sequence of bbs4 Gene from C. reinhardtii, and then transformed into Escherichia coli BL21(DE3)for protein expression. The fusion protein with maltose binding protein(MBP)and 6×His tag was obtained by inducing expression. The purified fusion protein 6×His-BBS4 were used to immunize New Zealand white rabbits and the antiserum was isolated from the blood collected from the ear vein. The titer of the antiserum was measured by indirect ELISA essay, the specificity of the antibody was tested by Western blotting method and immunofluorescence test. Results: Prokaryotic expression plasmids pET-28a(+)-bbs4 and pMAL-c2X-bbs4 were successfully constructed. The relative molecular weights of 6×His-BBS4 and MBP-BBS4 fusion proteins were 45 kDa and 85 kDa, respectively. The purity of the fusion proteins was more than 85%, and the concentration of the fusion proteins was more than 0.5 mg/ml. The proteins were used for immunization. The titer of the fusion proteins was 51 200. Western blotting showed a high specificity for the detection of C. reinhardtii CC-125. Prokaryotic expression of BBS4 protein of C. reinhardtii and preparation of polyclonal antibody were realized. Conclu- sion: The polyclonal antibody against BBS4 of C. reinhardtii was prepared successfully, which laid a foundation for further study on the role of BBS4 in ciliopathies.
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OBJECTIVE To explore the mechanism of Gαiand Gβγsubunits on dexmedetomidine (DMED)-induced sedation.METHODS Kunming mice were randomly placed into three groups(DMED group, DMED+dbcAMP/rolipram/gallein/M119 group, dbcAMP/rolipram/gallein/M119 group) to explore the regulation of dbcAMP/rolipram/gallein/M119 on DMED-induced sedation by establishing loss of righting reflex (LORR) model. DbcAMP/rolipram was intracerebroventricular injected and gallein/M119 was intraperitoneal injected 15 min before DMED intravenous injection. In CHO-α2A-AR cells, after administration of DMED/gallein/M119, the regulation on the cAMP accumulation stimulated by Forskolin (FSK) was detected, so was the intracellular calcium ion concentration ([Ca2+]i. The levels of pERK/pCREB were detected by Western Blot to explore the key signal molecules involved in DMED-induced sedation. RESULTS The ED50of DMED-induced LORR (200.0 nmol·kg-1) was increased to 375.0 or 433.3 nmol·kg-1by pre-treatment with cAMP analog dbcAMP(50 nmol/5μl per mouse)or phosphodies-terase 4 inhibitor rolipram(100 nmol/5μl per mouse).In addition,the ED50of DMED-induced LORR was decreased to 113.6 or 136.5 nmol·kg-1when pre-treated with Gβγsubunits inhibitor M119(100 mg·kg-1) or gallein(100 mg·kg-1)respectively.Administration of dbcAMP,rolipram,gallein or M119 alone had little effect on LORR of mice.Gallein(10 μmol·L-1)significantly inhibited forskolin-stimulated cAMP accumu-lation in CHO-α2A-AR cells.Compared with Gβγsubunits inhibitors or DMED alone,[Ca2+]iand pERK1/2 significantly increased after co-administration of Gβγsubunits inhibitors with DMED.DbcAMP(5 μmol·L-1) or rolipram (5 μmol·L- 1) alone had little effect on ERK1/2 phosphorylation, but decreased DMED-induced ERK1/2 phosphorylation after co-administration with DMED. Gβγsubunit inhibitors treatment increased DMED-induced phosphorylation of CREB, whereas dbcAMP or rolipram had little effect on pCREB induced by DMED.CONCLUSION Gβγsubunits might inhibit DMED-induced sedation through cAMP and pERK1/2 pathway,which was opposite to Gαisubuint.
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Objective To observe the curative effect of Fuzhengxiaojia decoction on precancerous lesion of gastric cancer (PLGC).Methods We randomly divided 44 patients with PLGC in our hospital into control group (n=22)and treatment group (n=22).The control group was given 4 Weifuchun tablets each time and three times per day and while the treatment group was given one Fuzhengxiaojia decoction of 400 mL besides the medication of the control group.They were treated for two courses,one course lasting for one month.Results Superoxide dismutase (SOD),malondialdehyde (MDA),glutathione peroxidase (GSH-Px),IgG,IgM and IgA in the two groups had no significant differences before treatment (P＞0.05).After treatment,compared with those in the control group,SOD (t=2.144,P=0.044)and GSH-Px (t=2.322,P=0.030)increased,while MDA(t=3.096, P=0.005),IgG(t=2.421,P=0.025),IgM(t=3.377,P=0.003)and IgA (t=2.521,P=0.020)decreased. The main symptom scores in the two groups did not significantly differ before treatment (P＜0.05).After treatment, compared with those in the control group,the scores for main symptoms like reduced food intake (t=3.924,P＜0.001),stomach noise (t=4.161,P＜0.001)and gastric or hypochondriac swelling (t=2.881,P＜0.009) decreased in the treatment group.The rate of effective cases was higher than that in the control group (χ2=4.539, P=0.033).Conclusion The effect of Weifuchun combined with Fuzhengxiaojia prescriptions in treating PLGC is better than Weifuchun alone,which is related to improving redox and immunoglobulin.
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Objective To investigate the effect of supratemporalis approach scalp coronal incision for treating craniomaxillofacial fracture.Methods Fifty-two cases of traditional coronal scalp approach were retrospectively analyzed for understanding the facial nerve damage situation.Then 30 cases a.dopted the supratemporalis approach scalp coronal incision and the facial nerve damage situation was recorded.The follow-up observation lasted for 6-24 months.Results The facial contour,mouth opening and occlusion function recovered well after the operation in all 82 cases.Eight cases of temporary facial nerve injury were observed in the traditional approach group.No case of facial nerve injury occurred in the supratemporalis approach group(P＜0.05).Conclusion The supratemporalis approach scalp coronal incision can effectively avoid the facial nerve injuries.
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Objective:To construct an adeno-associated vector expressing Snail "tough decoy" (TUD).Methods:The nucleotide sequence of Snail gene were obtained from GenBank,then 2 cDNAs were designed and synthesized coding expression of small hairpin RNAs for Snail genes.The pAAV-U6-shRNA-Snail-TUD-EGFP expression vector was constructed by molecular biological techniques.Then pAAV-U6-shRNA-Snail-TUD-EGFP was co-transfected with Helper Free adeno-associated virus system pAAV-RC and pAAV-Helper into AAV-293 cell line to form rAAY-U6-shRNA-Snail-TUD(shRNA-Snail).The silencing effect of shRNA-Snail in Tca8113 and Cal-27 cells was detected by RT-PCR.The titer of the virus was measured.The expression level of green fluorescent protein in AAV-293 cells was monitored by the fluorescent microscopy.Results:The result of gene sequencing showed that shRNA-Snail was successful constructed in pAAV-U6-shRNA-Snail-TUD-EGFP vector.The titer of the recombined virus was 4.4 × 1010/ml.The Snail mRNA and protein expression level was significantly reduced in Tca8113 and Cal-27 cells by rAAY-U6-shRNA-Snail-TUD-EGFP transfection.Conclusion:rAAY-U6-shRNA-Snail-TUD-EGFP may inhibite Snail gene expression in cells.
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Objective:To establish a rapid HPLC method for the quantitative determination of 5 saponins ( notoginsenoside R1 , ginsenoside Rg1 ,ginsenoside Re,ginsenoside Rb1 and ginsenoside Rd) in Notoginseng total saponins using a monolithic column. Meth-ods:The analysis was performed on a Merck Chromolith Performance RP-18e column (100 mm × 4. 6 mm,2μm) with gradient elution of acetonitrile and water. The detection wavelength was set at 203 nm. Results:Satisfactory separation of all analytes was obtained in 20 min. All calibration curves showed good linearity within the testing ranges (r≥0.9998). The average recoveries were between 98. 6% and 100. 4%. The RSDs were less than 2. 1% (n=6). Conclusion:The method is efficient and accurate for the quality con-trol of Notoginseng total saponins.
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Objective:To establish a rapid HPLC method for the quantitative determination of 5 saponins ( notoginsenoside R1 , ginsenoside Rg1 ,ginsenoside Re,ginsenoside Rb1 and ginsenoside Rd) in Notoginseng total saponins using a monolithic column. Meth-ods:The analysis was performed on a Merck Chromolith Performance RP-18e column (100 mm × 4. 6 mm,2μm) with gradient elution of acetonitrile and water. The detection wavelength was set at 203 nm. Results:Satisfactory separation of all analytes was obtained in 20 min. All calibration curves showed good linearity within the testing ranges (r≥0.9998). The average recoveries were between 98. 6% and 100. 4%. The RSDs were less than 2. 1% (n=6). Conclusion:The method is efficient and accurate for the quality con-trol of Notoginseng total saponins.
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<p><b>OBJECTIVE</b>To investigate whether fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG PET/CT) combined with thin-section CT improves the diagnostic performance for solitary pulmonary nodules (SPNs).</p><p><b>METHODS</b>A total of 267 patients underwent examinations withF-FDG PET/CT and thin-section CT for evaluating the SPNs with undetermined nature, which was further confirmed by pathological examination or clinical follow-up. The performance of two diagnostic criteria based on findings in PET/CT alone (Criterion 1) and in PET/CT combined with thin-section CT (Criterion 2) were compared.</p><p><b>RESULTS</b>Thin-section CT provided greater diagnostic information for SPNs in 84.2% of the patients. Compared with Criterion 1, the diagnosis based on Criterion 2 significantly increased the diagnostic sensitivity (80.4% vs 91%, P<0.01) and accuracy (76.4% vs 87.2%, P<0.01) for lung cancer. The lesion size and the CT features including lobulation, air bronchogram, and feeding vessel, but not SUVmax, were all helpful for characterizing non-solid SPNs. Thin-section CT rectified diagnostic errors in 50% (20/40) of the cancerous lesions, which had been diagnosed as benign by PET due to their low metabolism. For non-solid SPNs, Criterion 2 showed a significantly higher diagnostic sensitivity than Criterion 1 (90.0% vs 40.0%, P=0.000) but their diagnostic specificity were comparable (75.2% vs 58.3%, P=0.667). For solid nodules, the use of thin-section CT resulted in no significant improvement in the diagnostic performance (P<0.05).</p><p><b>CONCLUSION</b>The combination of PET/CT and thin-section CT creates a synergistic effect for the characterization of SPNs, especially non-solid nodules.</p>
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<p><b>OBJECTIVE</b>To Study the effect of C677T and MTHFR gene polymorphism on side effects of HD-MTX in ALL children.</p><p><b>METHODS</b>The gene polymorphism of C677T A303G and MTHFR C677T were detected by PCR in 98 ALL children from January 2014 to January 2016. The side effects during HD-MTX therapy were observed, and the relationship among GSTP1, MTHFR gene polymorphism and incidence of side effect of HD-MTX were analyzed.</p><p><b>RESULTS</b>Among 98 ALL children, the gene variation was observed in 61 ALL children (62.24%). Polymorphism study on C677T A303G showed that the gene frequency of A was 84.69%, while that of G was 15.31%; for polymorphism of MTHFR C677T, gene frequency of C was 66.33%, and that of T was 33.67%. Seven patients(7.14%) experienced with bone marrow supression, 23 patients(23.47%) with liver function damage, 15 patients(15.31%) with renal function damage, 48 patients(48.98%) with gastrointestinal reactions and 46 patients(46.94%) with mucosal lesions. After adjustment of sex, age, risk stratification and dosage of MTX, the gene polymorphism had no significant relationship with bone marrow suppression, gastrointestinal reactions and mucosal lesions(P>0.05). However, the number of the mutant genes had statistically significant relationship with liver and renal function damage(P<0.05).</p><p><b>CONCLUSION</b>The risk of side effects during HD-MTX therapy increases in ALL children with combined mutation of MTHFR and C677T.</p>
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We aim to study the effect of Buyang Huanwu decoction (Astragali Radix, Angelicae Sinensis Radix, Paeoniae Radix Alba, Pheretima, Chuanxiong Rhizoma, Carthami Flos and Persicae Semen) on NF-κB/MuRFl signaling pathway in the denervated tibial muscle atrophy of rats and explore its protection mechanisms. Sixty Sprague-Dawley rats were subjected to common peroneal nerve crush models of 5 mm injury, and then were randomly divided into six groups for daily intragastric administration of drugs： sham operation group, model group, Buyang Huanwu decoction high, middle and low dose groups, and mecobalamin group (as a positive control). After drug administration for 10 days and 21 days, the gene and protein expression levels of NF-κB and MuRFl in the tibial muscle of rats were detected by qRT-PCR and Western blot respectively. The results showed that, as compared with the model group, RNA and protein expression levels of NF-κB and MuRF1 were significantly reduced in Buyang Huanwu decoction middle and high-dose groups (P<0.05 or P<0.01). These results indicated that Buyang Huanwu decoction could inhibit ubiquitin proteasome system probably by activating NF-κB/MuRF1 signal pathway to protect the denervated tibial muscle atrophy of rats.
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Objective To evaluate the effects of video games on neurological function and living ability in stroke patients by meta-analysis.Methods A computer retrieval of electronic databases was carried out to collect randomized controlled trials(RCTs) evaluating effects of video games for improving neurological function and living ability in stroke patients.The quality of included studies was critically evaluated and data was analyzed using RevMan 5.3 software.Results Totally 15 studies and 588 patients were included.Results of meta-analysis showed that neurological function and living ability could be improved by video games in stroke patients.For the same length of time as conventional rehabilitation,combination of video games and conventional rehabilitation had better effects on daily living ability than conventional rehabilitation.Adding a certain period of time of video games training on the basis of conventional rehabilitation had better effects on extremity motion function and daily living ability than conventional rehabilitation.Conclusion Video games together with conventional rehabilitation can better improve neurological function and daily living ability in stroke patients compared with conventional rehabilitation.
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AIM:To detect the endogenous expression of B-cell leukemia/lymphoma 6 member B (BCL6B) in FHC and LoVo cells, and to investigate the effects of BCL6B on proliferation and migration of LoVo cells for further explo-ring the underlying mechanism .METHODS:The endogenous expression of BCL 6B in the FHC and LoVo cells was detec-ted by RT-PCR and Western blot .The methods of MTT assay , colony formation assay , wound healing assay and Transwell chamber experiment were employed to examine the biological functions of BCL 6B in the LoVo cells.The mRNA and protein levels of BCL6B, cyclin D1 and matrix metalloproteinase-9 ( MMP-9) were determined by RT-PCR and Western blot , re-spectively.The level of phosphorylated protein kinase B (p-AKT) was detected by Western blot.RESULTS:BCL6B ex-pression was notably repressed in the LoVo cells as compared with the FHC cells , which were significantly increased by transfection with pcDNA3.1-BCL6B.The abilities of proliferation and migration of the LoVo cells at 72 h were inhibited by 28.33%(P<0.01) and 36.11%(P<0.05) in BCL6B group.The mRNA levels of cyclin D1 and MMP-9 in the cells of BCL6B group were decreased by 39.90%(P<0.01) and 77.36% (P <0.05), and the protein levels of cyclin D1, MMP-9 and p-AKT were reduced by 44.00%(P<0.05), 47.06%(P<0.01) and 32.88% (P<0.05), respectively. CONCLUSION:BCL6B inhibits proliferation and migration of the LoVo cells , and the PI3K/AKT signaling pathway is in-volved in this process .