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1.
Article in Chinese | WPRIM | ID: wpr-927983

ABSTRACT

Farnesyl diphosphate synthase(FPPS) is a key enzyme at the branch point of the sesquiterpene biosynthetic pathway, but there are no reports on the transcriptional regulation of FPPS promoter in Pogostemon cabin. In the early stage of this study, we obtained the binding protein PcFBA-1 of FPPS gene promoter in P. cabin. In order to explore the possible mechanism of PcFBA-1 involved in the regulation of patchouli alcohol biosynthesis, this study performed PCR-based cloning and sequencing analysis of PcFBA-1, analyzed the expression patterns of PcFBA-1 in different tissues by fluorescence quantitative PCR and its subcellular localization using the protoplast transformation system, detected the binding of PcFBA-1 protein to the FPPS promoter in vitro with the yeast one-hybrid system, and verified its transcriptional regulatory function by dual-luciferase reporter gene assay. The findings demonstrated that the cloned PcFBA-1 had an open reading frame(ORF) of 1 131 bp, encoding a protein of 376 amino acids, containing two conserved domains named F-box-like superfamily and FBA-1 superfamily, and belonging to the F-box family. Moreover, neither signal peptide nor transmembrane domain was contained, implying that it was an unstable hydrophilic protein. In addition, as revealed by fluorescence quantitative PCR results, PcFBA-1 had the highest expression in leaves, and there was no significant difference in expression in roots or stems. PcFBA-1 protein was proved mainly located in the cytoplasm. Furthermore, yeast one-hybrid screening and dual-luciferase reporter gene assay showed that PcFBA-1 was able to bind to FPPS promoter both in vitro and in vivo to enhance the activity of FPPS promoter. In summary, this study identifies a new transcription factor PcFBA-1 in P. cabin, which directly binds to the FPPS gene promoter to enhance the promoter activity. This had laid a foundation for the biosynthesis of patchouli alcohol and other active ingre-dients and provided a basis for metabolic engineering and genetic improvement of P. cabin.


Subject(s)
Amino Acid Sequence , Cloning, Molecular , Geranyltranstransferase/genetics , Pogostemon , Transcription Factors/genetics
2.
International Journal of Surgery ; (12): 664-671,F3, 2021.
Article in Chinese | WPRIM | ID: wpr-907501

ABSTRACT

Objective:To compare the efficacy of laparotomy and laparoscopic Glisson pedicle transecting segmental hepatectomy in the treatment of hepatocellular carcinoma.Methods:The clinical data of 138 patients with hepatocellular carcinoma who underwent Glisson pedicle transection hepatectomy in the Affiliated Hospital of Chengde Medical College from March 2012 to November 2015 were collected retrospectively. 45 patients underwent laparoscopic surgery (laparoscopic group) and 93 patients underwent laparotomy. 45 patients were selected as open group according to the most clinical ratio of propensity score. The baseline data, operation, stress index, liver function index and postoperative survival rate were compared between the two groups. COX proportional hazard regression model was used to analyze the influencing factors of 5-year prognosis. Normally distributed measurement data were expressed as mean±standard deviation ( Mean± SD), and independent sample t test was used for comparison between groups. The chi-square test was used to compare the enumeration data between groups. Results:The operation time, intraoperative blood loss, blood transfusion cases, complications, postoperative eating time, drainage tube removal time, and hospital stay in the laparoscopic group were (219.48±53.61) min, (208.53±39.74) mL, 2, 3, (3.62±0.51) d, (4.73±0.85) d, (10.59±1.37) d, the open group were (185.37±46.92) min, (267.49±35.83) mL, 8, 10, (4.56±0.73) d, (5.29±0.94) d, (13.87±1.68) d, the differences between the two groups were statistically significant ( P<0.05). Cortisol, norepinephrine, C-reactive protein, aspartate aminotransferase, alanine aminotransferase, total bilirubin in the postoperative laparoscopic group) And albumin levels were (258.39±30.76) ng/mL, (66.78±7.31) ng/mL, (28.39±3.45) μg/mL, (66.51±7.14) U/L, (73.39±7.85) U/L, (20.67±2.74) μmol/L, (37.52±6.48) g/L, the open group were (316.92±37.51) ng/mL, (75.63±8.39) ng/mL, (38.47±4.56) μg/mL, (82.39±9.06) U/L, (94.05±9.74) U/L, (22.93±3.18) μmol/L, (34.65±5.87) g/L, the differences between the two groups were statistically significant ( P<0.05). There were no statistically significant difference in overall survival rate and tumor-free survival rate between the laparotomy group and the laparoscopic group at 1, 3, and 5 years after surgery ( P>0.05). The COX proportional hazards regression model showed that HBsAg positive, Child-Pugh grade, alpha-fetoprotein, and tumor diameter were risk factors affecting the 5-year prognosis of patients ( HR=6.627, 7.518, 5.143, 4.881, 95% CI: 1.516-9.738, 2.382-12.495, 3.078-6.249, 1.925-7.723, P<0.05). Conclusion:The long-term effects of laparotomy and laparoscopic Glisson pedicle transection hepatectomy are the same in selective hepatocellular carcinoma cases, but laparoscopic surgery can reduce intraoperative blood loss, blood transfusion cases and complications, facilitate early removal of drainage tube and food intake, shorten hospital stay, reduce stress reaction, and promote the recovery of liver function, so the short-term effect is better.

3.
Article in Chinese | WPRIM | ID: wpr-873612

ABSTRACT

@#Uniportal video-assisted thoracic surgery (UniVATS) is a significant approach of mini-invasive surgery for lung cancer. UniVATS was first used for treatment of lung cancer in 2010. The European consensus and the Chinese consensus were published in 2019 and 2020 respectively. The latest Chinese consensus included the definition of UniVATS, indications for lung cancer treatment, safety and feasibility, surgical skills, learning curve, short-term and long-term results, providing suggestions for the standardization of uniportal video-assisted thoracic surgery, which are essential to improve the quality of surgery and reduce the incidence of related complications. The Chinese consensus also summarized the current status of subxiphoid UniVATS and non-intubated UniVATS for lung cancer. Considering the technical difficulties and challenges, the application of both technologies in clinical treatment has certain limitation. This article aims to give an interpretation of the results of the Chinese consensus and the similarities and to compare the differences with the European consensus, and to provide a reference for the majority of thoracic surgery colleagues.

4.
Chinese Medical Journal ; (24): 2776-2787, 2021.
Article in English | WPRIM | ID: wpr-921154

ABSTRACT

Many seminal advances have been made in human immunodeficiency virus (HIV)/AIDS research over the past four decades. Treatment strategies, such as gene therapy and immunotherapy, are yielding promising results to effectively control HIV infection. Despite this, a cure for HIV/AIDS is not envisioned in the near future. A recently published academic study has raised awareness regarding a promising alternative therapeutic option for HIV/AIDS, referred to as "selective elimination of host cells capable of producing HIV" (SECH). Similar to the "shock and kill strategy," the SECH approach requires the simultaneous administration of drugs targeting key mechanisms in specific cells to efficiently eliminate HIV replication-competent cellular reservoirs. Herein, we comprehensively review the specific mechanisms targeted by the SECH strategy. Briefly, the suggested cocktail of drugs should contain (i) latency reversal agents to promote the latency reversal process in replication-competent reservoir cells, (ii) pro-apoptotic and anti-autophagy drugs to induce death of infected cells through various pathways, and finally (iii) drugs that eliminate new cycles of infection by prevention of HIV attachment to host cells, and by HIV integrase inhibitor drugs. Finally, we discuss three major challenges that are likely to restrict the application of the SECH strategy in HIV/AIDS patients.


Subject(s)
CD4-Positive T-Lymphocytes , HIV Infections/drug therapy , HIV-1 , Humans , Virus Latency
5.
Article in Chinese | WPRIM | ID: wpr-911454

ABSTRACT

Objective:To analyze the liver pathology, clinical characteristics and influence factors in patients with chronic hepatitis B virus (HBV) infection in immune tolerant phase (IT).Methods:The clinical data of 273 patients in IT phase who underwent liver biopsy from January 2015 to December 2019 were included in this study. The correlation between liver pathological changes and clinical features was analyzed.Results:There were 43 cases (15.75%) with liver histologic activity ≥ G2, 30 cases (10.99%) with liver fibrosis ≥ S2, and 55 cases (20.15%) with liver pathology ≥ G2 and/or ≥ S2. A total of 17.95% patients had liver steatosis. The majority (98.17%) of tissue samples were positive for HBsAg staining, while only 79.49% were positive for HBcAg. The characteristics of liver pathology were comparable in men from women patients. The differences of G and S were not statistically significant according to different HBsAg positivity, while those were statistically significant according to different HBcAg positivity. By univariate and multivariate analysis, the independent risk factors of pathological severity were HBcAg intensity, HBeAg level, and age. However, the differences of liver histologic activity and fibrosis were not statistically significant between those younger than 30 years old group from those older than 30 years old, neither between those younger or older than 40. Although the diagnostic value of liver inflammation and fibrosis 5 (LIF-5) was better than that of aspartate aminotransferase-to-platelet ratio index (APRI) and fibrosis 4 score (FIB-4), three diagnostic models for predicting the pathological severity were not strong enough (all area under the curves<0.8). Only the specificity of LIF-5 for predicting≥ G2, ≥ G2 and/or ≥ S2 was over 80%.Conclusions:Approximately 20% patients with chronic HBV infection in IT phase have progressive liver inflammation or fibrosis. The intensity of liver HBcAg and HBeAg level are negatively correlated with the severity of disease. The diagnostic models or most clinical indicators have low predictive effect for chronic HBV infections in IT phase.

6.
Article in Chinese | WPRIM | ID: wpr-910876

ABSTRACT

The pathogen of COVID-19 is 2019-nCoV, which belongs to the beta coronavirus. Angiotensin-converting enzyme 2 (ACE2) is the receptor of 2019-nCoV as the same of SARS-CoV. Most of the severe patients were the elderly with underlying diseases, which may be related to the decrease in the number of naive T cells. In addition to pulmonary symptoms, COVID-19 can also cause multiple organ dysfunction and even multiple organ failure (liver, nervous system, heart, kidney, etc.). Pathogenic mechanisms such as direct virus invasion, cytokine storm, endothelial cells damage, and down-regulation of ACE2 may play important roles in the severity of the disease.

7.
Article in Chinese | WPRIM | ID: wpr-910847

ABSTRACT

Objective:To search, evaluate and summarize the evidence on prediabetes management in high-risk population with gestational diabetes mellitus (GDM).Methods:Two researchers independently screened the evidence according to the inclusion criteria and exclusion criteria. The quality of the included evidence was evaluated by the clinical guideline research and evaluation system (AGREE Ⅱ). The quality of the evidence and the strength of recommendation were graded by the GRADE system. According to the clinical nursing practice guidelines for gestational diabetes mellitus, the recommendations for GDM high-risk groups were extracted.Results:A total of 14 pieces of evidence were included, including 4 guidelines, 2 consensus, 5 practice guidelines and 3 diagnosis and treatment standards. 29 pieces of recommendations for prediabetes management of high-risk population with gestational diabetes mellitus were summarized from five aspects, including disease risk assessment, prenatal examination guidance, management objectives of gestational weight and blood glucose, diet guidance and exercise guidance.Conclusion:The evidence of prediabetes management of high-risk population with gestational diabetes mellitus is scientific and reliable.

8.
Article in Chinese | WPRIM | ID: wpr-910797

ABSTRACT

Objective:To analyze the association between thyroglobulin antibody (TgAb) and differentiated thyroid cancer (DTC) metastases detected by post-radioactive iodine (RAI) therapy scan, when stimulated thyroglobulin (sTg) <1 μg/L.Methods:A total of 314 (68 males, 246 females, age (44.5±12.5) years) post-thyroidectomy DTC patients whose sTg <1 μg/L between March 2013 and May 2017 in Henan Cancer Hospital were enrolled retrospectively. Patients underwent 131I whole-body planar imaging ( 131I-WBS) and SPECT/CT imaging 5 d after 131I administration. Iodine avid metastases were compared between TgAb-positive group and TgAb-negative (TgAb<4 kU/L) group. Logistic regression analysis was conducted to assess odds ratio ( OR) for iodine avid metastases in each subgroup (Q1: 4 kU/L≤TgAb≤9.27 kU/L; Q2: 9.27 kU/L<TgAb≤26.75 kU/L; Q3: 26.75 kU/L<TgAb≤101.43 kU/L; Q4: TgAb>101.43 kU/L) of TgAb-positive patients, with the TgAb-negative patients as the reference. χ2 test was used to analyze the data. Results:Iodine avid metastases were found in 16.9% (53/314) of DTC patients and were more frequently in TgAb-positive group with TgAb>26.75 kU/L than TgAb-negative group (26.0%(19/73) vs 13.7%(23/168); χ2=5.382, P=0.02). Most metastases (92.5%, 49/53) occurred in cervical and mediastinal lymph nodes. The OR for iodine avid metastases was obviously high in TgAb-positive patients with 26.75 kU/L<TgAb≤101.43 kU/L ( OR(95% CI): 3.687(1.397-9.733), P=0.008) and with intermediate-high risk of recurrence ( OR(95% CI): 2.489(1.169-5.301), P=0.018), with the TgAb-negative group as the reference. Conclusion:The possibility of functional metastasis should be fully considered during 131I therapy in TgAb-positive DTC patients after surgery who have higher TgAb level and risk stratification, even if sTg<1 μg/L.

9.
Article in Chinese | WPRIM | ID: wpr-886546

ABSTRACT

@#Objective    To summarize the experience of surgical treatment of asphyxiating thoracic dysplasia (Jeune syndrome). Methods    A total of 15 patients with asphyxiating thoracic dysplasia from August 2018 to April 2020 in our hospital were retrospectively included. There were 7 males and 8 females, aged 1-25 (8.87±6.71) years. Special steel bars were used to correct the growth direction of the rib and costal cartilage. Meanwhile, the concave and convex deformities of the chest wall on both sides were corrected to increase the chest volume and correct the thoracic deformity. Results    The contour appearance of the chest wall of all patients changed after the operation. The shape was close to normal, and the symptoms of hypoxia were improved. The operation time was 147.73±59.78 min, intraoperative bleeding volume was 105.67±91.90 mL, ICU stay time was 14.20±13.54 d and hospital stay time was 26.00±17.87 d. Eleven patients were directly extubated after the operation, 4 patients underwent tracheotomy and received assisted respiration, and the assisted respiration time was 19, 13, 22 and 12 days, respectively. The postoperative chest circumference was significantly increased, and the blood oxygen saturation was significantly improved. There were 5 patients with cardiac insufficiency, and 3 of them were improved by cardiotonic therapy, 2 of them died of heart failure on the 2nd and 31st day after the operation, respectively. Abdominal distention occurred in 10 patients after operation, and 5 of them were obstinate and eliminated by comprehensive treatment. All patients were followed up. The appearance of thorax was improved obviously and there was no sign of compression in lungs. One 13-year-old patient developed respiratory discomfort 3 months after the operation, and the symptoms were relieved after self-administration of oxygen. A 25-year-old patient developed cardiac insufficiency half a month after the discharge, and the symptoms disappeared after cardiotonic treatment. Four patients took out the steel bars in 13, 13, 15 and 17 months after the operation, respectively. The appearance of thorax remained well after the operation. The imaging examination showed that the position of bone structure was normal, the lung field was clear, and there was no sign of chronic inflammation. Conclusion    This technique is a safe and simple operation method. It can not only eliminate the deformity of chest wall, but also increase the volume of chest obviously. However, the long-term effect needs to be further evaluated.

10.
Article in Chinese | WPRIM | ID: wpr-884639

ABSTRACT

Objective:To clarify the relationship between postoperative tumor recurrence and the type and dosage of immunosuppressants in patients undergoing liver transplantation.Method:A retrospective analysis was conducted on the clinical data of patients who underwent liver transplantation for liver cancer from September 2007 to January 2019 at the Department of Hepatobiliary Surgery, First Affiliated Hospital of Chongqing Medical University. According to whether there was tumor recurrence after liver transplantation, the patients were divided into the case group and the control group. The etiology, alpha-fetoprotein level, Child-Pugh score, model for end-stage liver disease (MELD) score, and cancer nodules, number of tumors, diameter of largest cancer nodule, microvascular infiltration (MVI), large vessel infiltration, Edmondson grade of tumor differentiation, postoperative immunosuppression regimen, and blood trough concentration of tacrolimus or cyclosporine were compared between the two groups. The effects of calcineurin inhibitor (CNI) exposure in groups of patients on tumor recurrence were compared, and statistically significant factors were included in the Cox regression analysis. Using the BCLC staging standard of liver cancer, all the subjects were stratified, and the influence of CNI exposure on tumor recurrence was further analyzed.Results:This study included 50 patients. There were 15 patients in the case group, aged (45.8±8.2) years, with 13 males (86.7%). There were 35 patients in the control group, aged (45.4±12.0) years, 31 males (88.6%). The diameter of the largest cancer nodule in the case group was significantly larger than that in the control group [(5.9±3.0) cm vs (3.5±1.8) cm, P<0.05]. The tacrolimus exposure levels in the case group at 14 d after operation were significantly higher than the control group[(11.7±7.7)ng/ml vs (5.9±3.0)ng/ml, t=2.48], 1 month after operation [(12.2±4.5) ng/ml vs (7.8±4.3) ng/ml, t=2.82], 9 months after operation [(6.9±4.0) ng/ml to (4.7±2.0) ng/ml, t=2.21] and the area under the curve at 1 year after operation [(100.1±21.1) vs (74.4±19.2), t=3.66], all P<0.05. Survival analysis showed that the cumulative tumor-free survival rate of the CNI high-exposure group was significantly lower than that of the CNI low-exposure group (52.2% vs 85.2%, χ 2=6.52, P<0.05). Multivariate analysis using the Cox proportional hazards regression model showed that the largest cancer nodule diameter ( RR=1.23, 95% CI: 1.01-1.60) and high CNI exposure ( RR=4.02, 95% CI: 1.10-14.74) were independent risk factors for tumor recurrence after liver transplantation. Stratified analysis showed that of the 17 patients with BCLC stage B, 6 patients (66.7%) with high CNI exposure developed tumor recurrence, while only 1 patient (12.5%) with low CNI exposure developed tumor recurrence. The difference was statistically significant ( P<0.05). Survival analysis showed that the cumulative tumor-free survival rate of patients with CNI high-exposure was significantly lower than that of patients with CNI low-exposure (33.3% vs 87.5%, χ 2=5.74, P<0.05). Of the 8 patients with BCLC stage C, 4 patients developed tumor recurrence with CNI high-exposure (100.0%). There was no tumor recurrence in patients with low CNI exposure. The difference between groups was statistically significant ( P<0.05). Survival analysis showed that the cumulative tumor-free survival rate of patients with high CNI exposure was significantly lower than that of low CNI exposure (0 vs 100.0%, χ 2=6.80, P<0.05). Conclusions:Tumor recurrence after liver transplantation was not significantly related to the type of immunosuppressant used. High CNI exposure was a risk factor for tumor recurrence after liver transplantation.

11.
Article in Chinese | WPRIM | ID: wpr-884615

ABSTRACT

Objective:To investigate the expression and clinical relevance of micro RNA (miR)-324-5p in pancreatic cancer tissues, and to explore the effects and potential mechanisms of miR-324-5p on the proliferation and migration of pancreatic cancer cells.Methods:Real-time quantitative PCR was used to detect the expression of miR-324-5p in 34 pairs of pancreatic cancer and adjacent normal tissues resected at Peking University First Hospital from October 2018 to September 2019. The correlations between miR-324-5p expression and clinicopathological characteristics and prognosis of pancreatic cancer were analyzed using data from the Cancer Genome Atlas (TCGA) database. Real-time PCR was used to detect the expression of miR-324-5p in pancreatic cancer cell lines, and PANC-1 cell was used for functional study by overexpressing miR-324-5p via mimic transfection. CCK8 assay was used to evaluate cell proliferation. Both transwell and scratch wound healing assay were used to assess the cancer cell migration ability. Related proteins were detected by Western blot. The potential downstream target genes of miR-324-5p were selected using data from miRNA target genes predicted webs, in combination with functional analysis and their expressional correlation with miR-324-5p.Results:Data from TCGA database showed that the expression of miR-324-5p in tumor tissues was significantly lower than that in normal pancreatic tissues. And low level of miR-324-5p in pancreatic cancer was correlated with poor prognosis. Analysis of 34 pairs pancreatic cancer and adjacent normal tissues showed that miR-324-5p expression in tumor tissues (11.7±2.0) was significantly lower than that in adjacent normal tissues (70.9±14.4), and the pancreatic cancer patients who had the nerve invasion cancer showed low level of miR-324-5p (82.1%, 23/28) was significantly higher than that patients with high level of miR-324-5p (33.3%, 2/6). The expression of miR-324-5p in human pancreatic cancer cell line was also significantly lower than that in normal pancreatic ductal cells. CCK-8 assay showed that the proliferation ability of PANC-1 cell was significantly decreased when miR-324-5p was overexpressed. Transwell and wound healing assays showed that the capabilities of vertical migration and the horizontal movement were significantly inhibited in PANC-1 cell with miR-324-5p overexpressed [(30.11±5.2) and (174.6±27.0) μm, respectively] than those in control groups [(63.6±4.2) and (458.3±22.3) μm, respectively]. Moreover, Western blots showed a significant overexpression of miR-324-5p inhibited epithelial-mesenchymal transition (EMT). According to the data from miRNA target genes prediction and the functional analysis we found KLF3, MGAT3, PBX1 and ZNRF2 were considered as the potential downstream target genes of miR-324-5p.Conclusions:Our results indicated that miR-324-5p is lowly expressed and acts as the tumor suppressor gene in pancreatic cancer, and low level of miR-324-5p is correlated to a higher rate of nerve invasion and poor prognosis. In human pancreatic cancer cell, miR-324-5p may regulate EMT by directly inhibiting target genes such as KLF3, MGAT3, PBX1, ZNRF2, which in turn suppresses cancer cell proliferation and migration.

12.
International Journal of Surgery ; (12): 247-254,F4, 2021.
Article in Chinese | WPRIM | ID: wpr-882478

ABSTRACT

Objective:This study aimed to establish an eXtreme Gradient Boosting(XGBoost) model that can predict the recurrence of hepatocellular carcinoma(HCC)patients after laparoscopic hepatectomy (LH) surgery.Methods:A total of 440 patients with primary HCC who received LH treatment for the first time from January 2013 to September 2016 in Affiliated Hospital of Chengde Medical University were selected as the research objects. The diagnosis method was pathological diagnosis. Research objects were divided into training group ( n=88) and verification group ( n=352) at a ratio of 2∶8 by random number table method. The Kaplan-Meier method was used to draw the recurrence-free survival curve, and the Log-rank test was used to compare the survival of the two groups; the training group was used to establish the COX regression model and the XGBoost model to screen independent predictors of recurrence after LH; receiver operating characteristic(ROC) curve was used to analyze the predictive abilities of the two models, and conducted internal verification in the verification group; Hosmer and Lemeshow Test was used to evaluate the calibration of the two models, and P>0.05 was used as a good fit between the model and the actual situation. Results:Both the COX regression model and the XGBoost model screened out tumor thrombus, low degree of differentiation, tumor microvascular infiltration (MVI), number of tumors, large tumors, and positive hepatitis B surface antigen were independent predictors of tumor recurrence( HR=2.477, 0.769, 1.786, 1.905, 1.544, 1.805; 95% CI: 1.465-4.251, 0.619-0.819, 1.263-2.546, 1.354-2.704, 1.272-1.816, 1.055-2.555). The XGboost model scores were 32 points, 29 points, 24 points, 18 points, 16 points, 11 points, respectively. In the training group, the area under the curve (AUC) of the COX regression model and XGBoost model for predicting recurrence were 0.746 (0.730-0.762) and 0.802 (0.785-0.818), respectively. The XGBoost model had strong predictive ability and was confirmed in the validation cohort. Conclusions:This study had established and verified the XGBoost model that can predict the recurrence of HCC patients after receiving LH for the first time. It can be used in clinics to assist doctors in formulating personalized postoperative monitoring programs for patients. Early detection, early diagnosis and early treatment of tumors and strengthening of postoperative follow-up are important measures to improve the prognosis of patients.

13.
Article in English | WPRIM | ID: wpr-878357

ABSTRACT

Objective@#The aim of the present study was to evaluate the performance of the simultaneous detection of HIV-1 RNA, HIV-1 DNA, and HCV RNA using one dried blood spot (DBS) as an alternative sample to plasma.@*Method@#A total of 571 paired DBS/plasma samples were collected from men who have sex with men (MSM) and injection drug users (IDUs), and serological and molecular assays were performed. Using plasma results as the reference standard, the performance of DBS tests for HIV-1 RNA, HIV-1 DNA, and HCV RNA was evaluated. Pearson's correlation coefficients and Bland-Altman analysis were performed to assess the correlation and concordance between DBS and plasma.@*Results@#Among paired plasma/DBS samples with detectable HIV-1 RNA and HCV RNA, five samples (5/32) were not detectable in DBS, while measurable HIV-1 RNA levels were present in plasma (1.44 to 3.99 log @*Conclusion@#The performance of the simultaneous detection of HIV-1 RNA, HIV-1 DNA, and HCV RNA using one DBS was acceptable. DBS, as an alternative sample to plasma, may be a viable option for the simultaneous detection of HIV-1 RNA, HIV-1 DNA, and HCV RNA in resource-limited settings or for individuals living in areas that are difficult to access.


Subject(s)
DNA, Viral/analysis , Diagnostic Tests, Routine/methods , Dried Blood Spot Testing/methods , HIV Infections/diagnosis , HIV-1/isolation & purification , Hepacivirus/isolation & purification , Hepatitis C/diagnosis , RNA, Viral/analysis , Sensitivity and Specificity , Specimen Handling/methods , Syphilis/diagnosis , Treponema pallidum/isolation & purification
14.
Journal of Clinical Hepatology ; (12): 153-157, 2020.
Article in Chinese | WPRIM | ID: wpr-780533

ABSTRACT

ObjectiveTo evaluate the clinical effect and safety of high-intensity focused ultrasound (HIFU) combined with gemcitabine in the treatment of advanced pancreatic cancer. MethodsSCI, Cochrane Library, Embase, PubMed, Wanfang Data, CNKI, CBM, and VIP were searched for randomized controlled trials (RCTs) of HIFU combined with gemcitabine in the treatment of advanced pancreatic cancer, with the assistance of expanded search, and these RCTs were screened according to the inclusion criteria. Review Manager 5.3 was used to perform the Meta-analysis. A fixed effects model was used for non-heterogeneous data; heterogeneity was explained by subgroup analysis based on intervention methods, and if it could not be explained by subgroup analysis, a random effects model was used. Relative risk (RR) and 95% confidence interval (CI) were used as evaluation indices, and funnel plots were generated based on the outcome measure involved in the highest number of studies. ResultsA total of 8 RCTs with 474 patients were included. The patients in the experimental group received gemcitabine-based chemotherapy and HIFU, and those in the control group received gemcitabine-based chemotherapy alone. Compared with the control group, the experimental group had significantly better results in 3-, 6-, and 12-month survival rates (3-month: RR=1.07, 95%CI: 1.00-1.14, P<0.05; 6-month: RR=2.19, 95%CI: 1.75-2.75, P<0.05; 12-month: RR=235, 95%CI: 1.07-5.14, P<0.05), tumor control (RR=1.64, 95%CI: 1.21-2.24, P=0.002), and pain control (RR=3.15, 95%CI: 2.45-4.05, P<0.05). There were no significant differences between the two groups in the incidence rates of leukopenia (RR=1.05, 95%CI: 0.85-1.30, P>0.05), gastrointestinal reactions (RR=0.89, 95%CI: 0.56-1.42, P>0.05), and liver injury (RR=1.29, 95%CI: 0.95-1.75, P>0.05). Since the outcome measure of pain control was involved in the highest number of studies, funnel plots were generated and showed no significant risk of bias. ConclusionCompared with gemcitabine alone, HIFU combined with gemcitabine can increase patients’ survival rate and improve their symptoms, with a similar incidence rate of adverse effects. Further studies are needed for this combined therapy.

15.
Chinese Pharmacological Bulletin ; (12): 288-294, 2020.
Article in Chinese | WPRIM | ID: wpr-857032

ABSTRACT

Aim To investigate the mechanism of MEBT/MEBO in promoting chronic wound healing by MMP-2 and MMP-9. Methods Ninety Wistar rats were randomly divided into five groups: MEBO group, rb-bFGF group, chronic wound group, acute wound group and blank group. Eighteen rats in each group were modeled as chronic refractory wounds. The ex-pression of MMP-2 and MMP-9 in wound tissues, on 3rd and 14th day, was detected by ELISA, Western blot and qRT-PCR. Results ( 1 ) Compared with chronic wound group, the time of wound healing was obviously shorter and the rate of wound healing was higher in MEBO group and rb-bFGF group ( P < 0. 05) ; meanwhile, the growth of wounds and the pathological changes of wounds were better in MEBO group and rb-bFGF group. (2) On 3rd day, the ex pression of MMP-2 and MMP-9 in MEBO group and rb-bFGF group was higher than that in chronic wound group (P <0. 05) ; however, on 14th day, the expression of MMP-2 and MMP-9 in MEBO group and rb-bF-GF group also decreased (P < 0. 05). (3) Compared with chronic wound group, the expression of MMP-2 and MMP-9 in MEBO group and rb-bFGF group increased on 3rd day (P <0. 05) , while the expression of MMP-2 and MMP-9 decreased in MEBO group and rb-bFGF group on 14th day (P <0.05). Conclusions MEBT/MEBO promoting chronic wound healing may be associated with regulating MMP-2 and MMP-9 to participate in the degradation and remodeling of ECM.

16.
Article in Chinese | WPRIM | ID: wpr-849727

ABSTRACT

Objective To explore a method of constructing engineered sweat gland organoids in vitro by transdifferentiation of epidermal keratinocytes into sweat gland-like cells after lineage re-programming to achieve functional repair of sweat glands. Methods CRISPR/dCas9 system was used to up-regulate the expression of endogenous ectodermal dysplasia ectodysplasin (EDA) genes in human immortalized cuticle keratin HaCaTs, the positive HaCaTs were then screened and cultured. The cells were cultured according to HaCaT group (HaCaT cells cultured in sweat gland medium), HaCaT+Dox group (HaCaT cells cultured in sweat gland medium with 5 μg/ml Dox), HaCaT-E group (HaCaT-E cells cultured in sweat gland medium) and HaCaT-E+Dox group (HaCaT-E cells cultured in sweat gland medium with 5 μg/ml Dox), respectively. RT-PCR and Western blotting were used to detect the expression level of EDA in each group to verify plasmid transfection. In addition, the cells were divided as HaCaT-E group (cultured in sweat gland medium) and HaCaT-E+Dox group (cultured in sweat gland medium with 5 μg/ml Dox) to identify the expression levels of sweat gland-related markers using immunofluorescence staining to verify whether HaCaT were reprogrammed to sweat gland like cells. Furthermore, the sweat gland development microenvironment was imitatively reconstructed using Matrigel as the main extracellular scaffold, which induced sweat gland-like cells to assemble into sweat gland organoids, and the expression of sweat gland surface markers was detected by immunofluorescence staining. After transplantation of sweat gland organoids to mouse scalded paw pads, iodine-starch sweating experiment and histomorphology were performed to detect the involvement of engineered sweat gland organoids in sweat gland regeneration and skin wound repair. Results After transfection with CRISPR/dCas9 lentiviral expression system, positive HaCaT-E cells were obtained. RT-PCR showed the expression level of EDA mRNA in HaCaTE+ Dox group was up-regulated about (4.62±0.19) times than that in HaCaT group (P0.05). Western blotting showed the same trend as did by RT-PCR. After 2-7 days of inducted incubation with sweat gland culture medium containing doxycycline, the cells showed fusiform shape, lumenized networks, as well as up-regulated expression of sweat gland-related markers. After mixedly cultured in a 3-D culture system containing Matrigel for 7 days, the cells proliferated and volume increased to form sweat glands organoids with cystic cavity, and the sweat gland surface markers and functional markers cytokeratin 18 (CK18), a-smooth muscle actin (a-SMA) and aquaporin 5 (AQP5) were positively expressed. In vivo experiments showed that the iodine-starch sweating test was positive in mice, and tissue immunofluorescence staining showed that green fluorescent protein (GFP) positive cells were mainly distributed in the basal layer and subunit basal layer of the epidermis, and the tubular glandular structure was found in the deep and subcutaneous tissues of the dermis, and the GFP and sweat gland cell markers CK18 and a-SMA were observed. Conclusions Up-regulation of endogenous EDA gene by CRISPR/dCas9 system may successfully reprogram HaCaT into sweat gland-like cells. A three-dimensional culture environment constructed with Matrigel as the main extracellular scaffold can induced engineered sweat gland-like cells to self-assembly and develop into sweat gland organoids in vitro. The engineered organoids not only possessed the phenotype and structural characteristics of the sweat gland primordia, but also promoted the regeneration of sweat glands in vivo, thus achieving functional wound repair.

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Article in Chinese | WPRIM | ID: wpr-829271

ABSTRACT

@#Objective    To explore the risk factors for lymph node metastasis in patients with T2 stage non-small cell lung cancer. Methods    The clinical data of 271 patients with non-small cell lung cancer who underwent surgical treatment in our hospital from 2014 to 2017 were collected, including 179 males and 92 females, with an average age of 62.73±0.58 years. The patients were divided into N0, N1, and N2 groups according to the lymph node metastasis status. The clinical data of the patients in different groups were compared. Results    The body mass index (BMI, P=0.043), preoperative lymph node enlargement (P<0.001), and tumor diameter (P<0.001) were significantly different among groups. The BMI (OR=1.131, 95%CI 1.001-1.277, P=0.048) and preoperative lymph node enlargement (OR=3.498, 95%CI 1.666-7.342, P=0.001) were independent risk factors for N2 lymph node metastasis, and tumor diameter was an independent risk factor for both N1 (OR=1.538, 95%CI 1.067-2.218, P=0.021) and N2 (OR=1.814, 95%CI 1.196-2.752, P=0.005) lymph node metastasis. Conclusion    Patients with high BMI or enlarged lymph nodes before surgery have a high risk for N2 lymph node metastasis, and those with large tumor diameter have a high risk for both N1 and N2 lymph node metastasis.

18.
Article in Chinese | WPRIM | ID: wpr-829209

ABSTRACT

@#Surgery is an essential method of comprehensive treatment for lung cancer, but it also impairs patients’ cardiopulmonary function. A subset of patients who undergo surgery may suffer from postoperative complications, and even death. Preoperative pulmonary rehabilitation is a part of enhanced recovery after surgery, and can improve patients' cardiopulmonary function, reduce postoperative complication rate and shorten hospital stay. It has been already demonstrated a great value in lung cancer surgery. In this review, we summarized the three important components of preoperative pulmonary rehabilitation, including smoking cessation, chest physical therapy, and preoperative exercise training. Moreover, this review outlined the development of pulmonary rehabilitation for lung malignancies, aiming to promote its application and standardization.

19.
Article in Chinese | WPRIM | ID: wpr-829206

ABSTRACT

@#Objective    To evaluate short-term clinical outcomes of skeletonized bilateral internal mammary artery (sBIMA) in coronary artery bypass grafting (CABG). Methods    The clinical data of 62 patients (54 males and 8 females with an average age of 56.8±6.0 years) undergoing isolated CABG using sBIMA in our hospital from October 2016 to May 2017 were retrospectively analyzed. The coronary graft flow, perioperative clinical outcomes and CT results were reviewed. Results    All the operations were carried out under extracorporeal circulation. Anastomosis of 124 internal mammary arteries was performed and 116 great saphenous veins were used simultaneously with an average anastomosis site of 4.5±0.8 for each patient. The cardiopulmonary bypass time was 116.4±22.9 min, aortic clamping time was 83.0±18.3 min, mechanical ventilation time was 20.8±21.3 h and ICU stay was 2.7±1.7 d. The graft flow of left internal mammary artery (LIMA), right internal mammary artery (RIMA) and great saphenous vein were 28.8±12.4 mL/min, 32.8±13.8 mL/min and 41.5±21.5 mL/min, respectively. There was no significant difference in the graft flow between LIMA and RIMA (P=0.112). There was no perioperative mortality, myocardial infarction or cerebrovascular accident. Only one male patient suffered sternal complication and poor wound healing and then received debridement as well as suturing. Coronary CT angiography showed that distal anastomosis of 7 vein grafts and 5 artery grafts was demonstrated shallow and 1 vein graft was undemonstrated, suggesting occlusion. Conclusion    CABG with sBIMA is a safe and reliable technique with excellent early results.

20.
Chinese Medical Journal ; (24): 1080-1086, 2020.
Article in English | WPRIM | ID: wpr-827689

ABSTRACT

BACKGROUND@#At the end of 2019, a novel coronavirus outbreak causative organism has been subsequently designated the 2019 novel coronavirus (2019-nCoV). The effectiveness of adjunctive glucocorticoid therapy in the management of 2019-nCoV-infected patients with severe lower respiratory tract infections is not clear, and warrants further investigation.@*METHODS@#The present study will be conducted as an open-labeled, randomized, controlled trial. We will enrol 48 subjects from Chongqing Public Health Medical Center. Each eligible subject will be assigned to an intervention group (methylprednisolone via intravenous injection at a dose of 1-2 mg/kg/day for 3 days) or a control group (no glucocorticoid use) randomly, at a 1:1 ratio. Subjects in both groups will be invited for 28 days of follow-up which will be scheduled at four consecutive visit points. We will use the clinical improvement rate as our primary endpoint. Secondary endpoints include the timing of clinical improvement after intervention, duration of mechanical ventilation, duration of hospitalization, overall incidence of adverse events, as well as rate of adverse events at each visit, and mortality at 2 and 4 weeks.@*DISCUSSION@#The present coronavirus outbreak is the third serious global coronavirus outbreak in the past two decades. Oral and parenteral glucocorticoids have been used in the management of severe respiratory symptoms in coronavirus-infected patients in the past. However, there remains no definitive evidence in the literature for or against the utilization of systemic glucocorticoids in seriously ill patients with coronavirus-related severe respiratory disease, or indeed in other types of severe respiratory disease. In this study, we hope to discover evidence either supporting or opposing the systemic therapeutic administration of glucocorticoids in patients with severe coronavirus disease 2019.@*TRIAL REGISTRATION@#ClinicalTrials.gov, ChiCTR2000029386, http://www.chictr.org.cn/showproj.aspx?proj=48777.


Subject(s)
Betacoronavirus , Coronavirus Infections , Drug Therapy , Glucocorticoids , Therapeutic Uses , Humans , Pandemics , Pneumonia, Viral , Drug Therapy , Randomized Controlled Trials as Topic , Severity of Illness Index
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