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Hsu CCT, Du L, Luong D, Suthiphosuwan S, Bharatha A, Krings T, Haacke EM, Osborn AG. More on Exploiting the T1 Shinethrough and T2* Effects Using Multiecho Susceptibility-Weighted Imaging. AJNR Am J Neuroradiol 2021; 42:E62-E63. [PMID: 34167958 DOI: 10.3174/ajnr.a7175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Everett D, Ke W, Paquet JF, Vujanovic G, Bass SA, Du L, Gale C, Heffernan M, Heinz U, Liyanage D, Luzum M, Majumder A, McNelis M, Shen C, Xu Y, Angerami A, Cao S, Chen Y, Coleman J, Cunqueiro L, Dai T, Ehlers R, Elfner H, Fan W, Fries RJ, Garza F, He Y, Jacak BV, Jacobs PM, Jeon S, Kim B, Kordell M, Kumar A, Mak S, Mulligan J, Nattrass C, Oliinychenko D, Park C, Putschke JH, Roland G, Schenke B, Schwiebert L, Silva A, Sirimanna C, Soltz RA, Tachibana Y, Wang XN, Wolpert RL. Phenomenological Constraints on the Transport Properties of QCD Matter with Data-Driven Model Averaging. PHYSICAL REVIEW LETTERS 2021; 126:242301. [PMID: 34213947 DOI: 10.1103/physrevlett.126.242301] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/05/2021] [Accepted: 05/27/2021] [Indexed: 06/13/2023]
Abstract
Using combined data from the Relativistic Heavy Ion and Large Hadron Colliders, we constrain the shear and bulk viscosities of quark-gluon plasma (QGP) at temperatures of ∼150-350 MeV. We use Bayesian inference to translate experimental and theoretical uncertainties into probabilistic constraints for the viscosities. With Bayesian model averaging we propagate an estimate of the model uncertainty generated by the transition from hydrodynamics to hadron transport in the plasma's final evolution stage, providing the most reliable phenomenological constraints to date on the QGP viscosities.
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Zhang Y, Feng L, Wang X, Fox M, Luo L, Du L, Chen B, Chen X, He H, Zhu S, Hu Z, Chen S, Long Y, Zhu Y, Xu L, Deng Y, Misselwitz B, Lang BM, Yilmaz B, Kim JJ, Owyang C, Dai N. Low fermentable oligosaccharides, disaccharides, monosaccharides, and polyols diet compared with traditional dietary advice for diarrhea-predominant irritable bowel syndrome: a parallel-group, randomized controlled trial with analysis of clinical and microbiological factors associated with patient outcomes. Am J Clin Nutr 2021; 113:1531-1545. [PMID: 33740048 DOI: 10.1093/ajcn/nqab005] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/04/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The efficacy and factors associated with patient outcomes for a diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (LFD) compared with traditional dietary advice (TDA) based on modified National Institute for Clinical Excellence guidelines for irritable bowel syndrome with diarrhea (IBS-D) in regions consuming a non-Western diet are unclear. OBJECTIVES We aimed to determine the efficacy of an LFD compared with TDA for the treatment of IBS-D in Chinese patients and to investigate the factors associated with favorable outcomes. METHODS One hundred and eight Chinese IBS-D patients (Rome III criteria) were randomly assigned to an LFD or TDA. The primary endpoint was a ≥50-point reduction in the IBS Severity Scoring System at 3 wk. Fecal samples collected before and after the dietary intervention were assessed for changes in SCFAs and microbiota profiles. A logistic regression model was used to identify predictors of outcomes. RESULTS Among the 100 patients who completed the study, the primary endpoint was met in a similar number of LFD (30 of 51, 59%) and TDA (26 of 49, 53%) patients (∆6%; 95% CI: -13%, 24%). Patients in the LFD group achieved earlier symptomatic improvement in stool frequency and excessive wind than those following TDA. LFD reduced carbohydrate-fermenting bacteria such as Bifidobacterium and Bacteroides, and decreased saccharolytic fermentation activity. This was associated with symptomatic improvement in the responders. High saccharolytic fermentation activity at baseline was associated with a higher symptom burden (P = 0.01) and a favorable therapeutic response to the LFD (log OR: 4.9; 95% CI: -0.1, 9.9; P = 0.05). CONCLUSIONS An LFD and TDA each reduced symptoms in Chinese IBS-D patients; however, the LFD achieved earlier symptomatic improvements in stool frequency and excessive wind. The therapeutic effect of the LFD was associated with changes in the fecal microbiota and the fecal fermentation index. At baseline, the presence of severe symptoms and microbial metabolic dysbiosis characterized by high saccharolytic capability predicted favorable outcomes to LFD intervention.This trial was registered at clinicaltrials.gov as NCT03304041.
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Du L, Kruse A. Cell disruption and value-added substances extraction from Arthrospira platensis using subcritical water. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zhao J, Li H, Chen G, Du L, Xu P, Zhang X, Xie M, Cao T, Li H. Aneuploid abortion correlates positively with MAD1 overexpression and miR-125b down-regulation. Mol Cytogenet 2021; 14:22. [PMID: 33902659 PMCID: PMC8074413 DOI: 10.1186/s13039-021-00538-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 02/21/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Aneuploidy is the most frequent cause of early-embryo abortion. Any defect in chromosome segregation would fail to satisfy the spindle assembly checkpoint (SAC) during mitosis, halting metaphase and causing aneuploidy. The mitotic checkpoint complex (MCC), comprising MAD1, MAD2, Cdc20, BUBR1 and BUB3, plays a vital role in SAC activation. Studies have confirmed that overexpression of MAD2 and BUBR1 can facilitate correct chromosome segregation and embryo stability. Research also proves that miR-125b negatively regulates MAD1 expression by binding to its 3'UTR. However, miR-125b, Mad1 and Bub3 gene expression in aneuploid embryos of spontaneous abortion has not been reported to date. METHODS In this study, embryonic villi from miscarried pregnancies were collected and divided into two groups (aneuploidy and euploidy) based on High-throughput ligation-dependent probe amplification (HLPA) and Fluorescence in situ hybridization (FISH) analyses. RNA levels of miR-125b, MAD1 and BUB3 were detected by Quantitative real-time PCR (qRT-PCR); protein levels of MAD1 and BUB3 were analysed by Western blotting. RESULTS statistical analysis (p < 0.05) showed that miR-125b and BUB3 were significantly down-regulated in the aneuploidy group compared to the control group and that MAD1 was significantly up-regulated. Additionally, the MAD1 protein level was significantly higher in aneuploidy abortion villus, but BUB3 protein was only mildly increased. Correlation analysis revealed that expression of MAD1 correlated negatively with miR-125b. CONCLUSION These results suggest that aneuploid abortion correlates positively with MAD1 overexpression, which might be caused by insufficient levels of miR-125b. Taken together, our findings first confirmed the negative regulatory mode between MAD1 and miR-125b, providing a basis for further mechanism researches in aneuploid abortion.
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Zhang Y, Cen M, Hu M, Du L, Hu W, Kim JJ, Dai N. Prevalence and Persistent Shedding of Fecal SARS-CoV-2 RNA in Patients With COVID-19 Infection: A Systematic Review and Meta-analysis. Clin Transl Gastroenterol 2021; 12:e00343. [PMID: 33835096 PMCID: PMC8036078 DOI: 10.14309/ctg.0000000000000343] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/04/2021] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION The prevalence and shedding of fecal severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA indicate coronavirus disease 2019 (COVID-19) infection in the gastrointestinal (GI) tract and likely infectivity. We performed a systemic review and meta-analysis to evaluate the prevalence and the duration of shedding of fecal RNA in patients with COVID-19 infection. METHODS PubMed, Embase, Web of Science, and Chinese databases Chinese National Knowledge Infrastructure and Wanfang Data up to June 2020 were searched for studies evaluating fecal SARS-CoV-2 RNA, including anal and rectal samples, in patients with confirmed COVID-19 infection. The pooled prevalence of fecal RNA in patients with detectable respiratory RNA was estimated. The days of shedding and days to loss of fecal and respiratory RNA from presentation were compared. RESULTS Thirty-five studies (N = 1,636) met criteria. The pooled prevalence of fecal RNA in COVID-19 patients was 43% (95% confidence interval [CI] 34%-52%). Higher proportion of patients with GI symptoms (52.4% vs 25.9%, odds ratio = 2.4, 95% CI 1.2-4.7) compared with no GI symptoms, specifically diarrhea (51.6% vs 24.0%, odds ratio = 3.0, 95% CI 1.9-4.8), had detectable fecal RNA. After loss of respiratory RNA, 27% (95% CI 15%-44%) of the patients had persistent shedding of fecal RNA. Days of RNA shedding in the feces were longer than respiratory samples (21.8 vs 14.7 days, mean difference = 7.1 days, 95% CI 1.2-13.0). Furthermore, days to loss of fecal RNA lagged respiratory RNA by a mean of 4.8 days (95% CI 2.2-7.5). DISCUSSION Fecal SARS-CoV-2 RNA is commonly detected in COVID-19 patients with a 3-fold increased risk with diarrhea. Shedding of fecal RNA lasted more than 3 weeks after presentation and a week after last detectable respiratory RNA.
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Chen B, Du L, Luo L, Cen M, Kim JJ. Prophylactic clips to reduce delayed polypectomy bleeding after resection of large colorectal polyps: a systematic review and meta-analysis of randomized trials. Gastrointest Endosc 2021; 93:807-815. [PMID: 33049265 DOI: 10.1016/j.gie.2020.10.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/01/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Prophylactic clips to prevent delayed polypectomy bleeding (DPB) after endoscopic resection of large colorectal polyps remains controversial. We performed a systematic review and meta-analysis to evaluate the efficacy of prophylactic clips for preventing DPB by synthesizing the results of randomized trials. METHODS PubMed, Cochrane Library, and EMBASE were searched to October 2019 to identify randomized controlled trials evaluating the efficacy of placing prophylactic clips to reduce DPB after resection of large (≥10 mm) colorectal polyps. The primary outcome was DPB defined by GI bleeding after the conclusion of the colonoscopy. RESULTS Eight studies (n = 3415) met the study criteria, all with a low risk of bias. The overall pooled incidence of DPB was 3.9% (95% confidence interval [CI], 2.4%-5.4%) in patients receiving endoscopic resection of colorectal polyps ≥10 mm. Placing prophylactic clips reduced DPB in patients receiving prophylactic clips (relative risk [RR], 0.61; 95% CI, 0.43-0.85; I2 = 37.8%) compared with no clips with a number needed to treat (NNT) of 52 (95% CI, 31-163). In stratified analyses, placing clips was associated with reduced risks of DPB in patients with polyps ≥20 mm (RR, 0.54; 95% CI, 0.35-0.84; I2 = 0.0%; NNT, 30), nonpedunculated morphology (RR, 0.54; 95% CI, 0.36-0.81; I2 = 0.0%; NNT, 39), and located proximal to the hepatic flexure (RR, 0.49; 95% CI, 0.31-0.78; I2 = 54.8%; NNT, 25) compared with no clips. CONCLUSIONS Prophylactic clips after endoscopic resection of colorectal polyps ≥10 mm demonstrated a modest reduction in the risk of DPB. Larger reductions were observed in patients with polyps ≥20 mm, nonpedunculated morphology, or located proximal to the hepatic flexure.
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Du L, Yau C, Brown-Swigart L, Gould R, Krings G, Hirst GL, Bedrosian I, Layman RM, Carter JM, Klein M, Venters S, Shad S, van der Noordaa M, Chien AJ, Haddad T, Isaacs C, Pusztai L, Albain K, Nanda R, Tripathy D, Liu MC, Boughey J, Schwab R, Hylton N, DeMichele A, Perlmutter J, Yee D, Berry D, Van't Veer L, Valero V, Esserman LJ, Symmans WF. Predicted sensitivity to endocrine therapy for stage II-III hormone receptor-positive and HER2-negative (HR+/HER2-) breast cancer before chemo-endocrine therapy. Ann Oncol 2021; 32:642-651. [PMID: 33617937 DOI: 10.1016/j.annonc.2021.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/07/2021] [Accepted: 02/13/2021] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND We proposed that a test for sensitivity to the adjuvant endocrine therapy component of treatment for patients with stage II-III breast cancer (SET2,3) should measure transcription related to estrogen and progesterone receptors (SETER/PR index) adjusted for a baseline prognostic index (BPI) combining clinical tumor and nodal stage with molecular subtype by RNA4 (ESR1, PGR, ERBB2, and AURKA). PATIENTS AND METHODS Patients with clinically high-risk, hormone receptor-positive (HR+), human epidermal growth factor receptor 2 (HER2)-negative (HR+/HER2-) breast cancer received neoadjuvant taxane-anthracycline chemotherapy, surgery with measurement of residual cancer burden (RCB), and then adjuvant endocrine therapy. SET2,3 was measured from pre-treatment tumor biopsies, evaluated first in an MD Anderson Cancer Center (MDACC) cohort (n = 307, 11 years' follow-up, U133A microarrays), cut point was determined, and then independent, blinded evaluation was carried out in the I-SPY2 trial (n = 268, high-risk MammaPrint result, 3.8 years' follow-up, Agilent-44K microarrays, NCI Clinical Trials ID: NCT01042379). Primary outcome measure was distant relapse-free survival. Multivariate Cox regression models tested prognostic independence of SET2,3 relative to RCB and other molecular prognostic signatures, and whether other prognostic signatures could substitute for SETER/PR or RNA4 components of SET2,3. RESULTS SET2,3 added independent prognostic information to RCB in the MDACC cohort: SET2,3 [hazard ratio (HR) 0.23, P = 0.004] and RCB (HR 1.77, P < 0.001); and the I-SPY2 trial: SET2,3 (HR 0.27, P = 0.031) and RCB (HR 1.68, P = 0.008). SET2,3 provided similar prognostic information irrespective of whether RCB-II or RCB-III after chemotherapy, and in both luminal subtypes. Conversely, RCB was most strongly prognostic in cancers with low SET2,3 status (MDACC P < 0.001, I-SPY2 P < 0.001). Other molecular signatures were not independently prognostic; they could effectively substitute for RNA4 subtype within the BPI component of SET2,3, but they could not effectively substitute for SETER/PR index. CONCLUSIONS SET2,3 added independent prognostic information to chemotherapy response (RCB) and baseline prognostic score or subtype. Approximately 40% of patients with clinically high-risk HR+/HER2- disease had high SET2,3 and could be considered for clinical trials of neoadjuvant endocrine-based treatment.
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Du L, Chen HL. More evidence is needed to reduce the risk of suicide in head and neck cancer patients. Br J Oral Maxillofac Surg 2021; 59:969-970. [PMID: 33972139 DOI: 10.1016/j.bjoms.2020.09.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 09/03/2020] [Indexed: 10/22/2022]
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Shi RY, Wu R, An DAL, Chen BH, Wu CW, Du L, Jiang M, Xu JR, Wu LM. Texture analysis applied in T1 maps and extracellular volume obtained using cardiac MRI in the diagnosis of hypertrophic cardiomyopathy and hypertensive heart disease compared with normal controls. Clin Radiol 2020; 76:236.e9-236.e19. [PMID: 33272531 DOI: 10.1016/j.crad.2020.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 11/04/2020] [Indexed: 10/22/2022]
Abstract
AIM To assess the potential of texture analysis (TA) applied in T1 maps and extracellular volume (ECV) obtained using cardiac magnetic resonance (CMR) in the diagnosis of hypertrophic cardiomyopathy (HCM) and hypertensive heart disease (HHD) compared with normal controls (NC). Strain parameters were analysed to compare with final TA models. MATERIALS AND METHODS This retrospective study included 66 HCM patients, 39 HHD patients, and 41 NC. Step-wise dimension reduction and feature selection were performed by reproducibility, machine learning, collinearity, and multivariable regression analysis to select the texture features that enable diagnosis of and differentiation between HCM and HHD. Strain parameters were calculated by short-axis and three long-axis cine sequences. RESULTS Independent features in T1 maps and ECV analysis allowed for the differentiation between patients (HCM and HHD) and NC. Of the best-calculated model, the areas under the receiver operating curve (AUCs) were as follows: 0.969 for T1 map and 0.964 for ECV. To distinguish HCM from HHD, two independent features were screened out for both T1 and ECV maps. The AUCs were as follows: 0.793 for T1 map and 0.894 for ECV. Radial, circumferential, and longitudinal strain parameters could differentiate patients from NC, but only longitudinal strain parameters was significantly different between HCM and HHD. CONCLUSIONS Texture analysis of T1 maps and ECV shows high accuracy in differentiating hypertrophic myocardium from NC, and HCM from HHD. Strain parameters are able to demonstrate the difference between patients and NC, but were less impressive in differentiating HCM and HHD.
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Gong Q, Yin J, Wang M, He L, Lei F, Luo Y, Yang S, Feng Y, Li J, Du L. Comprehensive study of dexamethasone on albumin biogenesis during normal and pathological renal conditions. PHARMACEUTICAL BIOLOGY 2020; 58:1252-1262. [PMID: 33332210 PMCID: PMC7751422 DOI: 10.1080/13880209.2020.1855214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
CONTEXT Dexamethasone (DXM) has an anti-immunoinflammatory effect, and is often used in acute kidney injury (AKI). However, the effects of DXM on albumin (ALB) have not been fully studied. OBJECTIVE To investigate the effects of DXM on ALB production and renal function. MATERIALS AND METHODS Male Wistar rats were divided into normal and DXM groups (0.25, 0.5, 1 mg/kg for 5 days) (n = 15) for a dose-dependent study. Rats were divided into normal group and DXM groups (0.5 mg/kg for 3, 5, 7 days) (n = 9) for a time-dependent study. In AKI experiment, rats were divided into normal (saline), cisplatin (CP, 5 mg/kg, i.v.), CP + DXM groups (0.25, 0.5 and 1 mg/kg, i.m.) (n = 16). The blood and the organs were isolated for analysis. RESULTS In normal, serum ALB (sALB) and serum total protein (sTP) increased in DXM group with sALB increased 19.8-32.2% (from small to large dosages); and 30.2-32.5.6% (from 3 to 7 days of DXM); sTP 15.7-22.6% and 14.2-24.3%; urine ALB (uALB) 31.5-392.3%, and 1047.2-1390.8%; urine TP (uTP) 0.68-173.1% and 98.0-504.9%, compared with normal groups. DXM increased the mRNA expression of Cebp and Hnf, suppressing podocin. In AKI, DXM decreased serum BUN (53.7%), serum Cre (73.4%), sALB (30.0%), sTP (18.7%), uALB (74.5%), uTP (449.3%), rescuing the suppressed podocin in kidney. CONCLUSIONS DXM acts on Cebp and Hnf and promotes ALB production. This finding helps to evaluate the rationale of DXM for kidney injury.
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Zheng WQ, Zhang Y, Chen B, Wei M, Wang XW, Du L. Identification and Characterization of circRNAs in the Developing Stem Cambium of Poplar Seedlings. Mol Biol 2020. [DOI: 10.1134/s0026893320050131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Du L, Zhang L, Sun F. Puerarin Inhibits the Progression of Bladder Cancer by Regulating circ_0020394/ miR-328-3p/ NRBP1 Axis. Cancer Biother Radiopharm 2020; 37:435-450. [PMID: 33016781 DOI: 10.1089/cbr.2019.3382] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: Previous studies have shown puerarin to be a potential therapeutic drug for treatment of bladder cancer. But the role and possible molecular mechanism of puerarin remain unknown. Methods: Cell viability, apoptosis, migration, and invasion were assessed by Cell Counting Kit-8 (CCK-8), flow cytometry, and transwell assays, respectively. Western blot was used to measure the levels of all protein. Glucose consumption and lactate production were detected using a glucose and lactate assay kit. Circular RNA_0020394 (circ_0020394), microRNA-328-3p (miR-328-3p), and nuclear receptor binding protein 1 (NRBP1) levels were measured by quantitative real-time polymerase chain reaction (qRT-PCR). The interaction between miRNA and circRNA or mRNA was confirmed using dual-luciferase reporter assay. In vivo experiments were performed to examine the effect of puerarin on tumor growth. Results: Puerarin suppressed cell viability, migration, invasion, and glycolysis, and induced apoptosis in bladder cancer. circ_0020394 was downregulated in puerarin-treated bladder cancer cells, and circ_0020394 overexpression attenuated the inhibitory effect of puerarin on cell progression. Moreover, circ_0020394 could bind to miR-328-3p, and miR-328-3p directly targeted NRBP1. Functionally, miR-328-3p could reverse the promotion effect of circ_0020394 overexpression on the progression of puerarin-treated cells, and silencing NRBP1 counteracted the effects of anti-miR-328-3p on puerarin-treated cells. Mechanically, circ_0020394 could increase NRBP1 expression by acting as miR-328-3p sponge in puerarin-treated bladder cancer cells. Besides, puerarin inhibited tumorigenesis in vivo by increasing miR-328-3p and decreasing the levels of circ_0020394 and NRBP1. Conclusions: Puerarin impedes cell viability, migration, invasion, and glycolysis, and promoted apoptosis in bladder cancer by regulating circ_0020394/miR-328-3p/NRBP1 axis.
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Zheng WQ, Zhang Y, Chen B, Wei M, Wang XW, Du L. [Identification and Characterization of circRNAs in the Developing Stem Cambium of Poplar Seedlings]. Mol Biol (Mosk) 2020; 54:802-812. [PMID: 33009790 DOI: 10.31857/s0026898420050134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/05/2020] [Indexed: 11/24/2022]
Abstract
Non-coding RNAs are a class of RNAs with multiple roles in plant life. Covalently closed circular RNA molecules (circRNAs) have been recently shown to be a group of RNA isoforms that show widespread tissue-specific expression in plants, often cooperating with the corresponding linear mRNAs to regulate gene function. However, no previous study of poplar has identified circRNAs in the cambium and determined their potential roles in the cambium or xylem development. In the present study, we sequenced RNAs in the cambium of poplar seedlings at two developmental stages, and identified and characterized 4912 circRNAs. Alternative back-splicing circularization events for 87 genes were identified among the circRNAs derived from different chromosomes. A total of 1138 circRNAs originated from 928 host genes, which were classified among the three major functional categories by GO analysis. Thirty-nine circRNAs were differentially expressed between cambium samples of stems at two developmental stages. Twenty-four DEcircRNAs interacted with 98 miRNAs as targets, of which some were associated with cambium growth and development. The results suggest that circRNAs play important roles in the cambium in relation to the regulation of stem growth and development in poplar seedlings.
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Gui M, Sun YH, Peng Y, Zhu HM, Jin S, Du L, Peng Z. [Meeting minutes of chronic viral hepatitis symposium on high-precision detection]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2020; 28:719-720. [PMID: 32911915 DOI: 10.3760/cma.j.cn501113-20200714-00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Du L, Zhang L, Li L, Li X, Yan J, Wang X, Fu X, Sun Z, Zhang X, Li Z, Wu J, Yu H, Chang Y, Zhou Z, Nan F, Wu X, Tian L, Zhang M. Effective Treatment with PD-1 Antibody, Chidamide, Etoposide, and Thalidomide (PCET) for Relapsed/Refractory Natural Killer/T-Cell Lymphoma: A Report of Three Cases. Onco Targets Ther 2020; 13:7189-7197. [PMID: 32801749 PMCID: PMC7394590 DOI: 10.2147/ott.s262039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/06/2020] [Indexed: 12/12/2022] Open
Abstract
Extranodal natural killer (NK)/T-cell lymphoma, nasal type (ENKTL) is a specific subtype of peripheral T cell lymphoma (PTCL) with a poor prognosis. To date, there exist no standard therapeutic regimens for relapsed/refractory (R/R) ENKTL. More potent treatment strategies are urgently needed to improve the survival of these patients with R/R ENKTL. Herein, we present three R/R ENKTL patients who failed prior therapies (L-asparaginase containing chemotherapy, radiotherapy or biological-cell therapy, etc.) benefited from the combination regimen comprised of anti-programmed-death-1 (PD-1) antibody toripalimab, chidamide, etoposide, and thalidomide. They received the treatment regimen continuously until the disease progression occurs. As of data collection, two patients achieved complete remission (CR) after 4, 6 cycles of treatment, respectively, and another patient was evaluated as partial remission (PR) after 2 cycles. Treatment-related adverse events (AEs) mainly presented grade 2~3 leukocytopenia and anemia, which were controllable. It follows that PD-1 antibody, chidamide, etoposide, and thalidomide (PCET) regimen may be a promising choice for patients with R/R ENKTL and warrants further investigation.
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Du L, Chen HL. Comment on: Postoperative pressure injuries in adults having surgery under general anaesthesia: systematic review of perioperative risk factors. Br J Surg 2020; 107:e272. [PMID: 32415854 DOI: 10.1002/bjs.11631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 03/20/2020] [Indexed: 02/02/2023]
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Zhang B, Yang B, Du L, Guo Y. Nitric oxide donor andrographolide enhances humoral and cell-mediated immune responses. Cell Mol Biol (Noisy-le-grand) 2020; 66:176-180. [PMID: 32538767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 05/20/2020] [Accepted: 05/20/2020] [Indexed: 06/11/2023]
Abstract
The present study was aimed to investigate the regulatory effect of Nitric oxide donor andrographolide (Q-1) on cellular immunity in patients with chronic hepatitis B. Peripheral blood mononuclear cells (PBMCs) were isolated from patients with chronic hepatitis B. Cell viability was assessed using 3‑(4,5‑dimethyl‑thiazol‑2‑yl)‑2,5‑diphenyl‑2H‑tetrazolium bromide (MTT) assay. The levels of expression of interferon gamma (IFN-γ), interleukin 4 (IL-4), interleukin 10 (IL-10) and tumor necrosis factor α (TFN-α) in PBMCs of patients with chronic hepatitis B were determined using real-time quantitative polymerase chain reaction (qRT-PCR). Anti-HBV effect of isolated HBV DNA was also assessed in vitro. Q-1 had no significant effect on the viability of Vero and isolated PBMCs (p > 0.05). The expression of IFN-γ in PBMCs of control patients significantly and time-dependently increased after treatment with Q-1, but the expressions of IL-4 and IL-10 in PBMCs of patients with chronic hepatitis B were decreased significantly and time-dependently (p < 0.05). The function of Th1 cells was significantly enhanced by Q-1 treatment (p < 0.05). The mean replication of HBV DNA in HepG2cells at the three concentrations of Q-1 and adefovir were 3.96 × 106, 4.13 × 106 and 4.53 × 106 copies/mL, respectively. There was no significant difference in the expression of HBV DNA among the concentration levels. These results indicate that andrographolide enhances the function of HBV-specific T cells in patients with chronic hepatitis B.
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Zhang B, Yang B, Du L, Guo Y. Nitric oxide donor andrographolide enhances humoral and cell-mediated immune responses. Cell Mol Biol (Noisy-le-grand) 2020. [DOI: 10.14715/cmb/2020.66.3.28] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present study was aimed to investigate the regulatory effect of Nitric oxide donor andrographolide (Q-1) on cellular immunity in patients with chronic hepatitis B. Peripheral blood mononuclear cells (PBMCs) were isolated from patients with chronic hepatitis B. Cell viability was assessed using 3"‘(4,5"‘dimethyl"‘thiazol"‘2"‘yl)"‘2,5"‘diphenyl"‘2H"‘tetrazolium bromide (MTT) assay. The levels of expression of interferon gamma (IFN-γ), interleukin 4 (IL-4), interleukin 10 (IL-10) and tumor necrosis factor α (TFN-α) in PBMCs of patients with chronic hepatitis B were determined using real-time quantitative polymerase chain reaction (qRT-PCR). Anti-HBV effect of isolated HBV DNA was also assessed in vitro. Q-1 had no significant effect on the viability of Vero and isolated PBMCs (p > 0.05). The expression of IFN-γ in PBMCs of control patients significantly and time-dependently increased after treatment with Q-1, but the expressions of IL-4 and IL-10 in PBMCs of patients with chronic hepatitis B were decreased significantly and time-dependently (p < 0.05). The function of Th1 cells was significantly enhanced by Q-1 treatment (p < 0.05). The mean replication of HBV DNA in HepG2cells at the three concentrations of Q-1 and adefovir were 3.96 í— 106, 4.13 í— 106 and 4.53 í— 106 copies/mL, respectively. There was no significant difference in the expression of HBV DNA among the concentration levels. These results indicate that andrographolide enhances the function of HBV-specific T cells in patients with chronic hepatitis B.
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Li Y, Li BY, Gu YB, Du L, Jiang WL, Zhu LP, Xu B. [Health status and healthcare service utilization among children born to women with maternal syphilis in Shanghai]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2020; 41:337-342. [PMID: 32294831 DOI: 10.3760/cma.j.issn.0254-6450.2020.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To assess the health status and health service utilization of children born to syphilis infected mothers during pregnancy, in order to prevent mother-to-child transmission of syphilis to the newborns. Methods: Women with maternal syphilis were studied by trained researchers via phone calls, in Shanghai during 2014-2015. Data related to demographics, status of infection and health care, utilization by both mothers and their children were collected through specifically designed questionnaires. Non-parametric tests including chi-square were used to assess the health status and health service utilization of children born to mothers with different demographic and socioeconomic characteristics. Results: A total of 495 children born to mothers with maternal syphilis were recruited from 1 000 syphilis infected parturient women. A total of 61 out of the 495 children were diagnosed as having congenital syphilis (57 children were diagnosed at birth and another 4 were diagnosed during the follow-up period). Children born to women who received syphilis treatment during pregnancy were at lower risk on congenital syphilis (χ(2)=7.214, P=0.027). 37.8% of the children were reported to have had different illnesses in the past three months, mainly involving upper respiratory infections (32.3%) or diarrhea (3.6%). Children diagnosed with congenital syphilis showed a higher prevalence of different kinds of diseases, compared to those without congenital syphilis (47.5% vs. 36.6%). 81.6% of the children had received regular child health care services. Subjects with the following factors as: being immigrant, with lower education, unemployed, unmarried and multipara, were related to the less use of regular child healthcare services. Only 39.7% of the parents would inform the care-takers about the risk of congenital syphilis infection of their own children at the child health care centers. Mothers with residency of Shanghai, having higher education level and employed, were less willing to inform doctors about the risk of congenital syphilis infection of their children. Conclusions: Loss to follow-up among children born to syphilis infected pregnant women remained a serious problem. Few parents would be willing to inform the healthcare takers that their children are at risk of syphilis, when receiving child health care services at the centers. It was necessary to integrate the congenital syphilis follow-up programs into the routine child care services so as to timely diagnose and treat the patients with congenital syphilis.
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Singh P, Bedrosian I, Ha M, Shen Y, Du L, Gould R, Symmans F. 48P Association of a genomic index of sensitivity to endocrine therapy with disease-free survival in breast cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Du L, Gu YB, Cui MQ, Li WX, Wang J, Zhu LP, Xu B. [Investigation on demands for antenatal care services among 2 002 pregnant women during the epidemic of COVID-19 in Shanghai]. ZHONGHUA FU CHAN KE ZA ZHI 2020; 55:160-165. [PMID: 32268713 DOI: 10.3760/cma.j.cn112141-20200218-00112] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To identify problems and demands for antenatal care (ANC) among pregnant women in different trimesters of pregnancy in Shanghai for optimizing ANC service during the epidemic of COVID-19. Method: s Organized by maternal and child health care institute in the 16 districts of Shanghai, a cross sectional study was conducted among pregnant women who came to pregnancy registration in the community health centers or attended ANC in midwifery hospitals from February 7 to February 12, 2020. Consented participating women completed a semi-structured online questionnaire voluntarily. Data was analyzed using frequency,chi-square test and scoring. Result: s A total of 2 002 valid questionnaires were collected from 183 community health centers and 67 midwifery hospitals. About 94.6%(1 894/2 002) of the pregnant women worried about being infected during the COVID-19 epidemic, and 14.7% (294/2 002) demanded for psychological consultation. Time-lapse appointments for ANC were requested by 87.7% (1 756/2 002) of the participants for avoiding presenting themselves in people-density places. Compared with other pregnancy trimesters, pregnant women in the second trimester were more willing to reduce the frequency of ANC (35.2% versus 39.5% versus 48.1%, P<0.01). Compared with multiparas, primiparas were more willing to have online consultation and guidance (49.2% versus 63.8%, P<0.01). Regarding the needs for health knowledge on COVID-19, personal protection against 2019 novel coronavirus (2019-nCoV) was the most concerned for pregnant women, and 71.0% (1 421/2 002) of them preferred to obtain knowledge through health applications, official Weibo and WeChat. Conclusions: Pregnant women in Shanghai critically concern about the risk of 2019-nCoV infections, and highly demand knowledge and measures on prevention and protection from COVID-19. They ask for having time-lapse appointments for ANC and online access to health information and services. Maternal and child care institutes should understand the demands of pregnant women, optimize the means of ANC service, and provide tailored and accessible health education and service for the safety of mother and child.
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Fang P, Du L, Cai D. Evaluation of plasma D-dimer for the diagnosis in Chinese patients with hepatocellular carcinoma: A meta-analysis. Medicine (Baltimore) 2020; 99:e19461. [PMID: 32195943 PMCID: PMC7220415 DOI: 10.1097/md.0000000000019461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND To evaluate the value of plasma D-dimer levels for the diagnosis of hepatocellular carcinoma (HCC). METHODS The following databases were searched for relevant studies published from 1990 to 2018: Wanfang Data, SinoMed, VIP Chinese Science and Technology Periodicals Database, China National Knowledge Infrastructure, Superstar Journals Database, Cochrane library, and PubMed. The studies were selected according to the diagnosis of HCC by plasma D-dimer levels. Quality assessment of the diagnostic accuracy of the studied items was conducted for rigorous quality evaluation of the studies that met the inclusion criteria. After extracting the relevant data, Stata 15.0 software was adopted for the analysis of the diagnostic odds ratio (DOR), sensitivity, specificity, and positive and negative likelihood ratios. A summary receiver operating characteristic (SROC) curve was constructed to comprehensively evaluate the value of plasma D-dimer levels for the diagnosis of HCC. RESULTS A total of 6 studies conducted in China with 475 cases in the patient groups and 727 in the control groups were included. The confidence level was expressed as the 95% confidence interval (CI). The pooled sensitivity, specificity, positive and negative likelihood ratios, and DOR of plasma D-dimer levels for the diagnosis of HCC were 0.75 (95% CI = 0.66-0.82), 0.93 (95% CI = 0.86-0.97), 11.4 (95% CI = 5.3-24.5), 0.27 (95% CI = 0.20-0.36), and 42 (95% CI = 19-93), respectively. The area under the SROC curve was 0.88 (95% CI = 0.85-0.91). CONCLUSIONS Plasma D-dimer has high sensitivity and specificity, and is expected to be an important plasma marker for the clinical diagnosis of HCC. Due to the limited quality and quantity of the included studies, the above results should be further validated.
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Zhang L, Wen Y, Zhang Q, Chen Y, Wang J, Shi K, Du L, Bao X. CACNA1A Gene Variants in Eight Chinese Patients With a Wide Range of Phenotypes. Front Pediatr 2020; 8:577544. [PMID: 33425808 PMCID: PMC7793878 DOI: 10.3389/fped.2020.577544] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/20/2020] [Indexed: 11/13/2022] Open
Abstract
Background: The CACNA1A gene encodes the voltage-dependent P/Q-type calcium channel subunit alpha-1A, which is widely expressed throughout the CNS. The biological roles of the P/Q channel are diverse and the phenotypic spectrum caused by CACNA1A mutations is wide. The aim of this study is to demonstrate its phenotypic diversity and analyze the genotype-phenotype correlations in a cohort of Chinese patients. Methods: Patients with hemiplegic migraine, cerebellar ataxia, developmental delay, or epilepsy without known causes were tested by trios whole-exome sequencing. Patients with pathogenic CACNA1A gene variants were recruited. The clinical information of the patients was collected, and the association between the genotype and the phenotype was investigated. Results: In total, eight patients (six females and two males) were found to have CACNA1A gene variants. All the variants were de novo including six missense variants and one frameshift variant. Four de novo missense variants were found in five patients located in the S4, S5, or S6 transmembrane segments of Domain II and III (p.R1352Q, p.G701V, p.A713T, p.V1393M). All of them were correlated with severe phenotypes, including three with sporadic hemiplegic migraine type 1 and epilepsy, and two with developmental and epileptic encephalopathy. The other two missense variants, p.Y62C and p.F1814L, located in the cytoplasmic side of the N-terminus and C-terminus, respectively. The variant p.Y62C was associated with severe hemiconvulsion-hemiplegia-epilepsy syndrome, and p.F1814L was associated with relatively mild phenotypes. All the missense variants were speculated as gain-of-function (GOF) mutations. The only frameshift variant, p.Q681Rfs*100, a lose-of-function (LOF) mutation, was found in a patient with episodic ataxia type 2. Meanwhile, all the patients had developmental delay ranging from mild to severe, as well as cerebellar ataxia including one with congenital ataxia, one with episodic ataxia, and six with non-progressive ataxia. Conclusions: CACNA1A variants could lead to a wide spectrum of neurological disorders including epileptic or non-epileptic paroxysmal events, cerebellar ataxia, and developmental delay. The variants could be both GOF and LOF mutations. There appeared to be some correlations between genotypes and phenotypes.
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Wen Z, He M, Peng C, Rao Y, Li J, Li Z, Du L, Li Y, Zhou M, Hui O, Feng Y, Yang S. Metabolomics and 16S rRNA Gene Sequencing Analyses of Changes in the Intestinal Flora and Biomarkers Induced by Gastrodia-Uncaria Treatment in a Rat Model of Chronic Migraine. Front Pharmacol 2019; 10:1425. [PMID: 31920639 PMCID: PMC6929670 DOI: 10.3389/fphar.2019.01425] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 11/08/2019] [Indexed: 12/24/2022] Open
Abstract
Accumulating evidence suggests that natural medicines have notable curative effects on neurological conditions, such as migraine, that are mediated by regulating the gut microbial flora. A natural medicine pair used in traditional Chinese medicine, Gastrodia elata Blume and Uncaria rhynchophylla (Miq.) Miq. ex Havil. (GU), have shown excellent effect in treating migraine, yet the role of gut microbes in the therapeutic effect of GU in chronic migraine (CMG) is unknown. Here, we performed a 16S rRNA gene sequencing and metabolomics study of the effects of GU in a nitroglycerin (NTG)-induced rat model of CMG. Our results showed that the gut microbial community structure changed significantly and was similar to that of control rats after GU administration in CMG rats. Specifically, GU increased the relative abundance of Bacteroides and Coprococcus and reduced the abundance of Prevotella_1 and Escherichia-Shigella in CMG rats. The metabolomics profiles of the plasma and ileum contents of CMG rats obtained with an ultra-performance liquid chromatography-mass spectrometer (UPLC-MS) revealed similar biomarkers in both samples, and GU treatment reduced 3-indoxyl sulfate, glutamic acid, L-tyrosine, and L-arginine levels, and increased 5-HIAA, L-tryptophan, and linoleic acid levels in plasma. Correlation analysis showed that the affected bacteria were closely related to amino acid metabolism. Most importantly, GU treatment hardly affected biomarkers in feces samples after inhibiting the activity of gut microbes. Collectively, these findings indicate that structural changes in gut flora are closely related to host metabolism and that regulating the gut microbial community structure and function may be one of the important mechanisms underlying the therapeutic effects of GU in migraine.
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