Objective To detect the related genes with rifampin and isoniazid in Mycobacterium tuberculosis in sputums using the DNA chip technique and evaluate the fensibility of the clinical application of the DNA chip technique.Methods 586 sputum smear specimen was detected using the L-J cultivation to determine their drug resistance.Simultaneously.DNA chip was employed to detect the mutation of the frequent mutable points rpoB,katG/inhA in mycobaeterium tuberculosis isolates.These two assays were compared and samples showing discrepancy were chosen for additional sequencing to evaluate the accuracy of the detection.Results(1)There were 584 culture positive sputum smear specimens including 3(+)163 specimens,2(+)204 specimens,and 1(+)217 specimens.The drug fast results displayed that 361 strains were sensitive to INH,223 strains tolerated INH in which 93 strains tolerated it in low concentration while sensitive to it in high concentration.and 130 strains tolerated it in both low and high concentration.While 327 strains were sensitive to RFP.247 strains tolerated RFP in which 59 strains tolemted it in low concentration while sensitive to it in high concentration,and 188 strains tolerated it in both low and high concentration.(2)There were 367 positive strains(62.8%)and 217 negative strains(37.2%)identified by PCR amplification of the specific resistance gene fragments.The detection rate of the katG/inhA was 28.4%,and the mutation sites were mainly focused on the katG315(89.8%).The detection rate of the rpoB was 55.9%(137/247),and the mutation sites were mainly focused on rpoB531(68.6%)and rpoB 526(16.1%).(3)The sequencing of sample,which showed discrepancy with L-J cultivation and the DNA chip confirm a certain omission ratio.Conclusions It is feasible to detect the related resistant genes in Mycobacterium tuberculosis isolates using the DNA chip technique.The key factor is to raise the efficiency of the DNA extraction,the effciency of the PCR and the quality control of the experiment to facilitate its clinical application.

Objective To study the efficacy of percutaneous ablative therapy for malignant liver lesions under real-time virtual guidance. Methods Percutaneous ablations were applied to 76 patients with 125 malignant liver lesions under the guidance of a real time virtual system (RVS). 64. 8% (81/ 125) lesions were undetectable on conventional ultrasound (US). The time spent on image fusion and the local treatment response were studied. Results The average time taken to synchronize the ultrasound and CT images was (19. 2±12. 8) min (range 5～55 min). Complete ablations were achieved in 86. 4% (38/44) of distinctly visualized lesions and in 91. 6% (74/81) of poorly visualized lesions on US. No treatment associated complications were found. Conclusion Ablation assisted by RVS and CT was safe and efficacious, especially for lesions undetectable by conventional ultrasound.

The analysis of essential oil in seeds ofDeseurainia sophia provided an experimental basis for further research on essential oil activity test at the first time. Essential oil was extracted by steam distillation method. Analysis and identification were made by gas chromatography-mass spectrometry (GC-MS) technology in combination with retention indices. A total of 33 components in seeds ofD. sophia were detected by GC-MS and 28 compounds were identified by MS in combination with Kovats retention index. The compounds with high contents were as follows: 3-methylene-nonane (68.14%), 1,3-diazine (29.32%), 2-n-butylacrolein (0.58%), methyl nipecotate (0.43%), 4-oxo-butanenitrile (0.31%), 8-chloro-neoisol-ongifolene (0.25%) and so on. It was concluded that 28 volatile components were identified by GC-MS combined with retention indices. The total detected components were 99.91%. This method was able to improve the accuracy of qualitative detection results.

Objective To observe the change of serum leptin in different risk stratifications of coronary heart disease (CHD) and to investigate its relationship with the severity of coronary artery lesion and the coronary artery Gensini score and its value in the coronary heart disease risk stratification .Methods According to coronary angiography ,120 research subjects were enrolled and di-vided into 4 groups :the non-CHD group ,stable angina(SAP) group ,unstable angina pectoris(UAP) group and myocardial infarc-tion group(AMI) ,respectively .The serum leptin levels in 4 groups were determined by immunoassay and the correlation between the leptin level with the coronary heart disease risk factor and biochemical markers of risk assessment was analyzed .Results The serum leptin level in the AMI group was significantly higher than that in the non-CHD group and the SAP group ,the leptin level showed the increasing trend with the increase of the coronary lesion severity and the Gensini scores and was positively related with the CHD risk stratification indicators cTnT and smoking index ,and negatively related with blood uric acid .Conclusion The serum leptin may be used as the valuable marker for evaluating the occurrence of acute coronary event and has good correlation with usual biochemical markers of CHD risk stratification and the severity of coronary artery lesion .

Objective To evaluate the clinical efficacy and safety of bi-calutamide combine with goserelin in the treatment of advanced prostate cancer.Methods Fifty cases of advanced prostate cancer patients were randomly divided into treatment group (25 cases) and control group (25 cases).Treatment group was given oral bicalutamide 50 mg, qd +sub-cutaneous goserelin 3.6 mg, once 4 weeks, a monthly review of serum prostate-specific antigen ( PSA ) content , when the serum PSA <0.2 ng· mL-1, disabled two drugs, when PSA>4 ng· mL-1, begin a new round of treatment.Control group was given the continuous dosing , the same dosage and usage as the treatment group.The course of treatment for two groups was 12 months.Comparison of the clinical efficacy , serum PSA value and adverse drug reactions.Results After 6, 9, 12 months of treatment , the clinical efficacy of treatment group was significantly higher than that of control group (P<0.05).After 3, 6, 9, 12 months of treatment , the serum PSA value was significantly lower than that of before treatment ( P<0.05 ) , and there was no significant difference in serum PSA between the two groups at each time point ( P>0.05 ).The main adverse drug reactions of the two groups were the castration syndrome , blood vessel contraction , osteoporosis , and liver toxicity, and the incidence rate of adverse drug reactions were not statistically different between the two groups ( P>0.05 ).Conclusion The clinical efficacy of intermittent administration for bicalutamide combined with goserelin in the treatment of advanced prostate cancer was significantly better than the continuous dosing , without increasing the incidence of adverse drug reactions.

AIM To compare the diuretic effects of Descurainiae Semen (DS),Coicis Semen (CS) and Plantaginis Semen (PS),and to observe their mechanical similarities and differences.METHODS Metabolic cage method was applied to investigating the diuretic effects of DS (2.34 g/kg),CS (7.00 g/kg) and PS (3.50 g/kg),whose diuretic mechanisms were studied by cryoscopic method,enzyme method,ion selective electrode method,ELISA and Western blot.RESULTS DS,CS and PS obviously increased saline-loaded rats' urine volume (P ＜ 0.05) and reduced their body weight (P ＜ 0.05) after administration for 7 h,which exhibited no significant effects on urine creatinine (Ucr),serum creatinine (Scr) and blood urea nitrogen (BUN)(P ＞ 0.05).DS showed its diuretic effect mainly by lowering the levels of serum Na +,atrial natriuretic peptide (ANP),brain natriuretic peptide (BNP),pulmonary AQP3,renal AQP1 and AQP2;CS showed its diuretic effect mainly by reducing the levels of serum Na +,Cl-,ANP,pulmonary AQP3,gastric AQP3,renal AQP1 and AQP2;PS showed its diuretic effect mainly by decreasing the levels of serum Na + and Cl-,pulmonary AQP3,gastric AQP3,renal AQP1 and AQP2.CONCLUSION Three medicinal materials have significant diuretic effects without obvious renal harm.DS categorized as a medicinal plant of lung channel and tropism has a great effect on netriuretic peptide system,CS categorized as a medicinal plant of spleen channel and tropism has a great effect on gastric AQP3,and PS categorized as a medicinal plant of renal channel and tropism has a great effect on renal AQPs.

Objective: To study the efficacy, safety and long-term outcomes of integrated strategy of bortezomib-based induction regimens followed by autologous hematopoietic stem cell (ASCT) and maintenance therapy in Chinese multiple myeloma (MM) patients. Methods: 200 MM patients receiving integrated strategy of bortezomib--based induction regimens followed by ASCT and maintenance therapy were retrospectively and prospectively analyzed from December 1. 2006 to April 30. 2018. Results: The complete remission rates (CR) and better than very good partial remission rates (VGPR) after induction therapy, transplantation and maintenance therapy were respectively 31% and 75.5%, 51.8% and 87.7%,73.6% and 93.4%. There was no difference between 4 cycles and more than 5 cycles induction chemotherapy. The negative rate of MRD detection by flow cytometry was 17.6% and 38.2% respectively after induction and 3 months after transplantation. The negative rate of MRD gradually increased during the maintenance therapy. The success rate of high dose CTX combined with G-CSF mobilization was 95.5% and transplantation related mortality (TRM) was zero. The median time to progress (TTP) was 75.3 months and the median overall survival (OS) was 99.5 months. TTP of patients obtaining CR and negative MRD after induction were longer that those of no CR and positive MRD. TTP and OS of patients receiving triple-drug induction and ASCT in early stage were longer than those of double-drug induction and ASCT in late stage. LDH≥240 U/L, high risk cytogenetics, ISS II+III stage and HBsAg positive were prognostic factors at diagnosis. However, only MRD and high risk cytogenetics were independent prognostic factors after transplantation and maintenance therapy. The clinical characteristics of patients of TTP ≥6 years were listed below: light-chain type M protein, ISS I stage, normal level of hemoglobin and platelet, normal LDH, HBsAg negative, chromosome 17p-negative, good response and sustained good response. Conclusions: Integrated strategy of bortezomib-based induction regimens followed by ASCT and maintenance therapy can significantly improve the short-term and long-term efficacy. The prognostic factors of TTP in different disease stages were different. Response to treatment, especially MRD, played a more important role in prognostic factors.
Antineoplastic Combined Chemotherapy Protocols ; Bortezomib/therapeutic use* ; Follow-Up Studies ; Hematopoietic Stem Cell Transplantation ; Humans ; Induction Chemotherapy ; Multiple Myeloma/therapy* ; Retrospective Studies ; Stem Cell Transplantation ; Transplantation, Autologous ; Treatment Outcome

Objective To study the setup error under deep inspiration breath hold (DIBH) guided by optical surface monitoring system (OSMS) and free breathing (FB) FB1 and FB2 (without OSMS guidance, directly set up the body marker line by laser lamp) in radiotherapy after radical mastectomy for left breast cancer, and to provide a basis for individualized clinical target volume-planning target volume (CTV-PTV) expansion for the doctor in charge to delineate the target volume. Methods A total of 36 patients with left breast cancer after radical mastectomy were selected and divided into three groups, in which cone beam computed tomography (CBCT) images were taken in three states: DIBH, FB1, and FB2, respectively. CBCT and CT images were analyzed for registration; the absolute error data of linear displacement in the ventro-dorsal, cranio-caudal, and left-right directions were recorded, and the expanding margin was calculated. Results The translation errors in the ventro-dorsal, cranio-caudal, and left-right directions were (0.06 ± 0.22) cm, (0.05 ± 0.23) cm, and (0.01 ± 0.24) cm in the DIBH group, (0.07 ± 0.21) cm, (0.02 ± 0.23) cm, and (0.02 ± 0.21) cm in the FB1 group, and (0.07 ± 0.24) cm, (0.07 ± 0.34) cm, and (0.25 ± 0.09) cm in the FB2 group. The statistical results of the DIBH group and FB1 group in the ventro-dorsal, RTN, and ROLL directions were significantly different (P < 0.05). The statistical results of the FB1 group and FB2 group in the ventro-dorsal direction were significantly different. The relation of three groups in the value of margin of planning target volume was DIBH < FB1 < FB2 in the ventro-dorsal and cranio-caudal directions and FB1 < DIBH < FB2 in the left-right direction. Conclusion OSMS-guided DIBH radiotherapy in patients with left breast cancer after radical mastectomy can reduce the setup error and provide an important basis for individualized CTV-PTV expansion for the doctor in charge to delineate the target volume.

Objective: To evaluate the efficacy and safety of autologous hematopoietic stem cell transplantation (auto-HSCT) in elderly patients (≥65 years old) with multiple myeloma (MM) . Methods: From June 1, 2006 to July 31, 2020, 22 MM patients (≥65 years old) who were diagnosed in the First Affiliated Hospital, Sun Yat-sen University and received novel drug induction followed by auto-HSCT were analyzed retrospectively. These patients were evaluated for important organ functions before transplantation, and the International Myeloma Working Group frail score was used in 2016 to screen out transplant-eligible patients. Results: The median (interquartile range, IQR) age at the time of transplantation of the 22 patients was 66.75 (IQR 4.50) years. A total of 20 patients received stem cell mobilization. The median number of mononuclear cells collected was 4.53×10(8)/kg, that of CD34(+) cells was 3.37×10(6)/kg, and the median number of apheresis procedures performed was 2. After stem cell transfusion, the median time of neutrophil implantation was 11 days, that of platelet implantation was 13 days, and the treatment-related mortality was 0 at 100 days after transplantation. The median follow-up was 48.7 months. The median time to progression time was not reached, and the median overall survival time was 111.8 months. Conclusion: Auto-HSCT is a safe and effective treatment for selected elderly patients of 65 years or older with MM.
Aged ; Hematopoietic Stem Cell Mobilization/methods* ; Hematopoietic Stem Cell Transplantation/adverse effects* ; Humans ; Multiple Myeloma/drug therapy* ; Retrospective Studies ; Transplantation, Autologous/methods* ; Treatment Outcome