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Sinha V, Sun D, Meijer EJ, Vlugt TJH, Bieberle-Hütter A. A multiscale modelling approach to elucidate the mechanism of the oxygen evolution reaction at the hematite-water interface. Faraday Discuss 2021; 229:89-107. [PMID: 33735341 DOI: 10.1039/c9fd00140a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoelectrochemical (PEC) splitting of water to make hydrogen is a promising clean-energy technology. The oxygen evolution reaction (OER) largely determines the energy efficiency in PEC water-splitting. Hematite, which is a cheap and sustainable semiconductor material with excellent chemical properties, a favourable band gap (2.1 eV) and composed of earth abundant elements is a suitable model photoanode material for studying OER. To understand the design of energy efficient anodes, it is highly desirable to have mechanistic insight into OER at an atomistic level which can be directly connected to experimentally measured quantities. We present a multiscale computational model of OER which connects the thermodynamics and kinetics of elementary charge transfer reactions in OER to kinetics of OER at laboratory length and time scales. We couple density functional theory (DFT) and DFT based molecular dynamics (DFT-MD) simulations with solvent effects at an atomistic level with kinetic Monte Carlo (kMC) simulations at a coarse-grained level in our multiscale model. The time and applied bias potential dependent surface coverage, which are experimentally not known, and the O2 evolution rate during OER at the hematite-water interface are calculated by the multiscale model. Furthermore, the multiscale model demonstrates the effect of explicitly modelling the interaction of water with the electrode surface via direct adsorption.
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Kalloniatis M, Loh CS, Acosta ML, Tomisich G, Zhu Y, Nivison‐smith L, Fletcher EL, Chua J, Sun D, Arunthavasothy N. Retinal amino acid neurochemistry in health and disease. Clin Exp Optom 2021; 96:310-32. [DOI: 10.1111/cxo.12015] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 07/01/2012] [Accepted: 07/17/2012] [Indexed: 12/25/2022] Open
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Ma DM, Sun D, Wang J, Jin DH, Li Y, Han YE. Long non-coding RNA MIR4435-2HG recruits miR-802 from FLOT2 to promote melanoma progression. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2021; 24:2616-2624. [PMID: 32196611 DOI: 10.26355/eurrev_202003_20530] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The regulatory mechanism of lncRNA MIR4435-2HG has been extensively investigated in human cancers other than melanoma. This study aims to elucidate the role of lncRNA MIR4435-2HG in melanoma. MATERIAL AND METHODS The mRNA expression was detected by RT-qPCR. MTT assay, Transwell assay and Dual-Luciferase reporter assay were used to investigate the regulatory mechanism of lncRNA MIR4435-2HG. RESULTS Upregulation of lncRNA MIR4435-2HG was identified in melanoma and promoted melanoma cell proliferation, migration and invasion. In addition, lncRNA MIR4435-2HG serves as the ceRNA of miR-802. MiR-802 inhibited melanoma progression by downregulating lncRNA MIR4435-2HG. Besides, miR-802 directly targets FLOT2. And knockdown of FLOT2 restrained the progression of melanoma by downregulating lncRNA MIR4435-2HG and upregulating miR-802. CONCLUSIONS LncRNA MIR4435-2HG promotes cell proliferation, migration and invasion in melanoma by sponging miR-802 and upregulating FLOT2.
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Kosmicki JA, Horowitz JE, Banerjee N, Lanche R, Marcketta A, Maxwell E, Bai X, Sun D, Backman JD, Sharma D, Kang HM, O'Dushlaine C, Yadav A, Mansfield AJ, Li AH, Watanabe K, Gurski L, McCarthy SE, Locke AE, Khalid S, O'Keeffe S, Mbatchou J, Chazara O, Huang Y, Kvikstad E, O'Neill A, Nioi P, Parker MM, Petrovski S, Runz H, Szustakowski JD, Wang Q, Wong E, Cordova-Palomera A, Smith EN, Szalma S, Zheng X, Esmaeeli S, Davis JW, Lai YP, Chen X, Justice AE, Leader JB, Mirshahi T, Carey DJ, Verma A, Sirugo G, Ritchie MD, Rader DJ, Povysil G, Goldstein DB, Kiryluk K, Pairo-Castineira E, Rawlik K, Pasko D, Walker S, Meynert A, Kousathanas A, Moutsianas L, Tenesa A, Caulfield M, Scott R, Wilson JF, Baillie JK, Butler-Laporte G, Nakanishi T, Lathrop M, Richards JB, Jones M, Balasubramanian S, Salerno W, Shuldiner AR, Marchini J, Overton JD, Habegger L, Cantor MN, Reid JG, Baras A, Abecasis GR, Ferreira MA. A catalog of associations between rare coding variants and COVID-19 outcomes. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2021:2020.10.28.20221804. [PMID: 33655273 PMCID: PMC7924298 DOI: 10.1101/2020.10.28.20221804] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) causes coronavirus disease-19 (COVID-19), a respiratory illness that can result in hospitalization or death. We investigated associations between rare genetic variants and seven COVID-19 outcomes in 543,213 individuals, including 8,248 with COVID-19. After accounting for multiple testing, we did not identify any clear associations with rare variants either exome-wide or when specifically focusing on (i) 14 interferon pathway genes in which rare deleterious variants have been reported in severe COVID-19 patients; (ii) 167 genes located in COVID-19 GWAS risk loci; or (iii) 32 additional genes of immunologic relevance and/or therapeutic potential. Our analyses indicate there are no significant associations with rare protein-coding variants with detectable effect sizes at our current sample sizes. Analyses will be updated as additional data become available, with results publicly browsable at https://rgc-covid19.regeneron.com.
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Bodden J, Sun D, Joseph GB, Huang LW, Andreadis C, Hughes-Fulford M, Lang TF, Link TM. Identification of non-Hodgkin lymphoma patients at risk for treatment-related vertebral density loss and fractures. Osteoporos Int 2021; 32:281-291. [PMID: 32803319 PMCID: PMC7838070 DOI: 10.1007/s00198-020-05577-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/29/2020] [Indexed: 01/22/2023]
Abstract
Information on bone loss in treated non-Hodgkin's lymphoma patients is limited. In this study, we used CT to analyze bone loss as well as prevalent and incident fractures. We found severe bone loss, a high rate of fractures, and a novel association between bone loss and the international prognostic index. INTRODUCTION To investigate bone loss and fracture risk in non-Hodgkin-lymphoma (NHL) patients by (i) comparing treatment-related vertebral density (VD) loss in NHL patients with control subjects and (ii) investigating associations of VD loss versus fracture risk. Further, associations of VD loss and clinical parameters were investigated. METHODS VD of 123 NHL patients was measured pre- and post-treatment in the L1, L2, and L3 vertebrae in routine computed tomography (CT) scans, performed between Jan 2016 and Mar 2017. Control measurements (n = 52) were obtained from CT colonographies between Sept 2003 and Sept 2017 and their subsequent follow-up-exams (10-137 months). Prevalent and incident (between baseline and follow-up) fractures were assessed in all subjects, and VD loss per year was calculated. Linear regression models were used to (i) compare VD loss between patients and controls and (ii) identify associations between VD loss and clinical parameters. Using logistic regression models, ORs for fractures per SD change in VD were assessed in patients. Analyses were adjusted for age, sex, and contrast application. RESULTS NHL patients experienced significantly greater VDL1-3 loss than controls (P = 0.003), and greater VDL1-3 loss was associated with a greater likelihood of incident fractures (OR, [95%-CI], P 1.90, [1.03, 3.51], 0.04). Patients with an initial international prognostic index (IPI) of 5 suffered significantly greater VD loss compared with an IPI of 0 (P = 0.01). CONCLUSION Using VD measurements in routine CT scans, substantial vertebral bone loss in NHL patients could be documented with a high incidence of fractures.
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Sun D, Li WY, Chen SH, Zhi ZF, Lin HS, Fan JT, Fan YJ. shRNA-Mediated Suppression of γ-Synuclein Leading to Downregulation of p38/ERK/JNK Phosphorylation and Cell Cycle Arrest in Endometrial Cancer Cells. Mol Biol 2021. [DOI: 10.1134/s0026893320060114] [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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Liu F, Liu NF, Wang L, Chen J, Han L, Yu Z, Sun D. Treatment of secondary lower limb lymphedema after gynecologic cancer with complex decongestive therapy. Lymphology 2021; 54:122-132. [PMID: 34929073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Secondary lower extremity lymphedema is a common complication of treatment for gynecological cancers. Conservative therapy plays an important role in the treatment of patients with secondary lower extremity lymphedema; in particular, complex decongestive therapy (CDT) has been recognized as an effective nonoperative technique for these patients. But CDT therapy for secondary lower extremity lymphedema remains a problem in China because this technique and its effectiveness have not achieved widespread use and popularity. Our goal was to assess effects of CDT in patients with secondary lower limb lymphedema after treatment for gynecological cancers. The retrospective study consisted of 60 patients who were treated with 20 sessions of CDT. Assessments included objective changes in limb circumference, degree of LE, imaging features, and incidence of erysipelas before and after CDT treatment. We found that CDT can effectively improve lymph stasis and promote backflow, and decrease circumference, interstitial fluid content, and incidence of erysipelas of lymphedematous lower limb. Our results demonstrate that CDT is an effective treatment method for patients with secondary lower limb lymphedema following treatment for gynecologic cancers. This technique should be more widely utilized and popularized in China to improve the quality of life of millions of patients with secondary lower limb lymphedema.
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Sun D, Li WY, Chen SH, Zhi ZF, Lin HS, Fan JT, Fan YJ. [shRNA-Mediated Suppression of γ-Synuclein Leading to Downregulation of p38/ERK/JNK Phosphorylation and Cell Cycle Arrest in Endometrial Cancer Cells]. Mol Biol (Mosk) 2020; 54:1006-1017. [PMID: 33276364 DOI: 10.31857/s0026898420060117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 03/23/2020] [Indexed: 11/24/2022]
Abstract
In this study, we explored the effects of treating human endometrial cancer cells with γ-synuclein-specific short hairpin RNA (shRNA) and elucidated the associated mechanisms in vitro and in vivo through the p38, extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK) signaling pathways. Cell proliferation and migration were assessed using CCK8, Transwell, and scratch wound healing assays. Flow cytometry and laser scanning confocal microscopy were used to detect cell cycle changes. Relative levels of phosphorylated and non-phosphorylated (p) p38, ERK1/2 and JNK1/2/3 were determined in vitro and in vivo using simple western blotting assays. Cell proliferation in the experimental group decreased significantly and cells transfected with shRNA showed reduced migration rates (P < 0.05). p-p38, p-ERK1/2, and p-JNK1/2/3 levels were downregulated in the experimental group in vitro and in vivo. Tumor volumes and weights in the experimental group were significantly lower (P < 0.05). Tumor formation time in the negative control group was significantly shorter (P < 0.05). Flow cytometry showed that the number of cells in the G1 and mitotic phases increased and that in the S phase decreased after SNCG silencing (P < 0.05). Confocal microscopy showed that the percentage of cells in the mitotic phase increased after SNCG gene silencing (P < 0.05). We conclude that shRNA-mediated suppression of γ-synuclein decreased the proliferation, migration, and tumorigenicity of endometrial cancer cells via downregulation of p38, ERK, and JNK phosphorylation. High SNCG expression is closely related to the growth cycle of endometrial cancer cells.
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Vaynerman A, Coombs L, Nickols H, LaRocca R, Sinicrope K, Ishihara D, Spalding A, Sun D. SURG-06. MANAGEMENT OF HYDROCEPHALUS IN ADULT PATIENTS WITH BRAIN METASTASES. Neuro Oncol 2020. [DOI: 10.1093/neuonc/noaa215.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
BACKGROUND
Traditionally patients presenting with hydrocephalus in the setting of brain metastases were associated with poor outcomes. However, in the area of improved systemic therapies, the prognosis of brain metastases has improved, warranting investigation into the management of concomitant hydrocephalus.
METHODS
We conducted a retrospective review of 12 consecutive patients with brain metastases presenting with hydrocephalus treated with either endoscopic third ventriculostomy (ETV) or ventriculoperitoneal shunt (VPS) from June 2013 to December 2018. We then compared our outcomes to 77 historical controls from the literature to test the hypothesis that management of hydrocephalus in patients who respond to systemic therapy is associated with improved outcomes.
RESULTS
The medial overall survival in our cohort was 182 days compared with 91 days in the reported previous studies, with an odds ratio of 0.5 (95% CI 0.24-1.04). In the 5 patients who underwent ETV, the median survival was 182 days versus 77 days reported in the literature, an odds ratio of 0.42 (95% CI 1.28-1.40). Patients with one brain metastasis did not reach median survival with 4 of 5 patients alive at last follow up, while only 3 of 7 patients with at least two metastases were alive at follow up with a median survival of 182 days. Patients who had immunotherapy were associated with improved survival, while leptomeningeal carcinomatosis still was associated with a negative outcome.
CONCLUSIONS
Patients with brain metastases and hydrocephalus who underwent neurosurgical CSF diversion had improved survival compared with historical controls, particularly in patients with one metastasis or who received immunotherapy. This study supports initial interdisciplinary evaluation of patients with brain metastases by medical and radiation oncology together with neurosurgery to facilitate immediate systemic therapy after relief of hydrocephalus.
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Li J, Chen GD, Bao JL, Sun D, Liu HB, Wang H, Chen L, Ruan XX. [Individual irradiation dose trend and correlation analysis of nuclear medicine workers in a hospital]. ZHONGHUA LAO DONG WEI SHENG ZHI YE BING ZA ZHI = ZHONGHUA LAODONG WEISHENG ZHIYEBING ZAZHI = CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES 2020; 38:672-674. [PMID: 33036530 DOI: 10.3760/cma.j.cn121094-20200327-00159] [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 understand the personal dose level of nuclear medical workers in a hospital, and to provide basis for health management of nuclear medicine occupational population. Methods: From January 2014 to December 2018, 147 radiation workers in a hospital were selected as the monitoring objects, and the individual dose monitoring data were analyzed. The correlation between individual dose and clinical workload was analyzed. Results: The average annual personal dose of 147 staff members was below the national dose limit. Compared with the radiation department, the average annual personal dose of nuclear medical staff was higher, and the difference was statistically significant (P<0.05) . There was a positive correlation between the annual average personal dose and the corresponding injection workload (Rs=0.69, P<0.05) . Conclusion: The occupational exposure risk of nuclear medical technicians and nurses is high, and reasonable protective measures should be taken to reduce the radiation exposure dose. Conclusion The occupational exposure risk of nuclear medical technicians and nurses is high, and reasonable protective measures should be taken to reduce the radiation exposure dose.
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Coombs L, LaRocca R, Hata J, Nickols H, Spalding A, Mutchnick I, Moriarity T, Gump W, Sun D. SURG-27. TREATING HYDROCEPHALUS IN DIFFUSE MIDLINE GLIOMAS WITH AN H3 K27M MUTATION. Neuro Oncol 2020. [DOI: 10.1093/neuonc/noaa215.873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
Diffuse midline gliomas (DMG) are a subset of malignant gliomas that share a characteristic Histone H3K27M mutation. These tumors are centrally located and may cause hydrocephalus on initial presentation. DMG lack characteristic imaging that distinguish from other primary brain tumors in the midline. We conducted this retrospective chart review of 43 consecutive patients presenting with midline tumors to determine: how many had a DMG; whether DMG patients with hydrocephalus were candidates for resection; and what the outcomes of endoscopic third ventriculostomy (ETV) versus ventriculoperitoneal shunt (VPS) placement were, as compared to wild type (WT) tumors.
METHODS
We conducted an IRB approved retrospective chart review of patients presenting with midline tumors from 9/2016-3/2020 to determine H3K27M mutation status, hydrocephalus, and neurosurgery intervention.
RESULTS
The median age of all midline tumor patients was 19.1 years (range 1.1-80.1). 26% (11/43) of midline tumors presented with H3K27M mutation, with a higher rate of hydrocephalus compared to patients without mutation [7/11 (65%) for DMG vs. 6/32 (19%) for WT, p< 0.05]. Of the seven H3K27M patients presenting with hydrocephalus, none were candidates for resection, 5 underwent ETV, and 2 underwent VPS placement as initial management. 4 out of these 5 ETVs failed within an average of 24 days (6-42 days). 2 patients then underwent VP shunt placement; the other 2 underwent secondary ETV but both failed and required VP shunting as well. All 6 WT tumor patients had one procedure (1 ETV, 5 resection) to relieve hydrocephalus, and no patients had recurrent hydrocephalus.
CONCLUSIONS
Both pediatric and adult patients may present with DMG associated with a higher rate of unresectable tumors and hydrocephalus on presentation. Furthermore, these data suggest that neuroendoscopic third ventriculostomy and septum pellucidum fenestration for the management of obstructive hydrocephalus in patients with DMG may be less robust than shunting.
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Patrick O, Nickols H, LaRocca R, Sinicrope K, Sun D, Spalding A. RADT-23. IMPACT OF REIRRADIATION UTILIZING STEREOTACTIC RADIOSURGERY ON RECURRENT GLIOBLASTOMA. Neuro Oncol 2020. [DOI: 10.1093/neuonc/noaa215.776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
BACKGROUND
Patients who have recurrent glioblastoma have limited treatment options. We conducted a retrospective review of patients with recurrent glioblastoma treated with standard initial radiation and temozolomide with tumor treating fields to investigate whether reirradiation using radiosurgery would be associated with improved outcomes.
METHODS
We reviewed the records of 54 consecutively treated patients with recurrent glioblastoma with ECOG 0 or 1 at recurrence and conducted Kaplan-Meier analysis with Log-rank testing to determine significance between groups.
RESULTS
We identified 24 patients who were treated without radiation therapy (control) while 30 patients underwent re-irradiation using radiosurgery (ReSRS) with a median total dose of 25Gy in five fractions. All patients had completed standard initial therapy, and there was no difference in the time to recurrence between the two groups (10 months for control, 15 months for ReSRS, [P = 0.17, HR for progression 0.65 (95% CI 0.38-1.13)]. A larger proportion of patients in the control arm (54%) had subtotal or gross total resection of the recurrence compared with the ReSRS group (44%, P < 0.05). The majority of patients had recurrence confirmed with biopsy (18/22 in control group, 25/31 in the ReSRS group). MGMT methylation status did not differ between control vs ReSRS (29% vs. 27%). ReSRS was associated with improved median survival from the time of first recurrence of 11.6 months versus 3.8 months in the control arm [P< 0.0001, HR for death 0.33 (95% CI 0.18-0.6)].
CONCLUSIONS
In a group of patients with high performance status diagnosed with recurrent glioblastoma, reirradiation with stereotactic radiosurgery was associated with nearly one year median survival after recurrence. Additional analyses are warranted to determine the impact of concurrent systemic therapies with irradiation and underlying tumor or patient factors to predict outcomes.
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Fang Z, Sun D, Gao J, Guo M, Sun L, Wang Y, Lıu Y, Wang R, Deng Q, Xu D, Gooneratne R. An Acylase from Shewanella Putrefaciens Presents a Vibrio Parahaemolyticus Acylhomoserine Lactone-Degrading Activity and Exhibits Temperature-, Ph- and Metal-Dependences. ACTA ALIMENTARIA 2020. [DOI: 10.1556/066.2020.49.4.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Shewanella putrefaciens supernatant was found to increase the virulence factors of Vibrio parahaemolyticus by efficiently degrading its acylhomoserine lactone (AHL). To further reveal the regulation mechanism and its key degrading enzyme, a potential AHL-degrading enzyme acylase (Aac) from S. putrefaciens was cloned, and the influences of temperature, pH, protein modifiers, and metals on Aac were tested. Aac was significantly influenced by temperature and pH, and exhibited the highest AHL-degrading activity at temperatures of 37 °C and pH of 8. Mg2+ and Fe2+ can further increase the AHL-degrading activity. 10 mM EDTA inhibited its activity possibly by chelating the co-factors (metals) required for Aac activity. Tryptophan and arginine were identified as key components for Aac activity that are critical to its AHL-degrading activity. This study provides useful information on Aac and for V. parahaemolyticus control.
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Lu Q, Cui YH, Liu ZS, Sun D, Fang F, Peng J, Zhou SZ, Wang JQ, Luo R, Jiang L, Qin J, Jiang YW, Zheng Y. [Investigation on the status of monotherapy for newly diagnosed tic disorders and its comorbidity in children]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2020; 58:887-892. [PMID: 33120459 DOI: 10.3760/cma.j.cn112140-20200628-00671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To investigate the status of monotherapy for newly diagnosed tic disorders and its comorbidity in children, so as to provide a reference for clinical medication. Methods: A questionnaire survey was conducted to collect the application experience of monotherapy for newly diagnosed tic disorders and comorbidities in 110 pediatric neurologists and psychiatrists from Chinese Tic Disorders Study Consortium from February to August in 2019. Doctors were asked to rate treatment options based on a rank 5-point scale with "1" least appropriate and "5" most appropriate. The drug evaluation index was based on the comparison of the median score of a single drug with the overall scores of all drugs in this disease (M (Q1, Q3)), single drug M ≥ overall Q3 was recommended as preferred drugs; overall Q1≤ single drug M < overall Q3 was considered as secondary drugs; single drug M < overall Q1 was considered as unsuitable drugs. Results: Among 110 electronic questionnaires, 94 (86%) were availably responded, responding doctors included 37 (39%) males and 57 (61%) females, the age of responding doctors was (48±10) years, and their working year was (17±10) years. In the investigation of the first and second monotherapy for newly diagnosed tic disorders in children without comorbidities, there were no preferred drugs for mild transient tic disorders. The scores of clonidine, aripiprazole and tiapride were 4 (3, 4), 4 (3, 4), 4 (4, 5) scores respectively, and were greater than overall scores (3 (2, 4) scores), so they could be recommended as the preferred drugs for moderate chronic tic disorders, the recommendation for initial mild Tourette syndrome (TS) treatment was the same as preferred drugs for moderate chronic tic disorders. Similarly, clonidine, aripiprazole, tiapride and haloperidol could be recommended as the preferred drugs for other kinds of tic disorders. As for the second monotherapy, the preferred drugs for moderate transient tic disorders, mild chronic tic disorders and severe TS were all aripiprazole, tiapride, haloperidol, sulpiride, clonidine and topiramate. While clonidine, aripiprazole, tiapride could be considered as preferred drugs for severe transient tic disorders, moderate to severe chronic tic disorders and mild to moderate tic disorders. In the investigation of monotherapy for newly diagnosed tic disorders in children with comorbidities, for moderate chronic tic disorders and TS comorbid with obsessive-compulsive disorder, aripiprazole (4 (3, 5) scores) and sertraline (4 (3, 4) scores) were preferred drugs,the median scores of which were all greater than overall scores (3 (3, 4) scores), they were also the preferred treatment for severe transient tic disorders and mild chronic tic disorders. For mild and moderate transient tic disorders, severe chronic tic disorders and TS comorbid with obsessive-compulsive disorder, aripiprazole, fluvoxamine, fluoxetine, haloperidol and sertraline were preferred drugs. When comorbid with attention deficit hyperactivity disorder (ADHD), severe transient tic disorders, moderate chronic tic disorders and TS, tomoxetine and clonidine were recommended as preferred drugs (both 4 (4, 5) scores), and tomoxetine and clonidine were also the preferred treatment for severe TS. For severe chronic tic disorders comorbid with ADHD, clonidine (5(4, 5) scores) was preferred drug, greater than overall scores (4 (3, 5) scores), while for mild and moderate transient tic disorders clonidine, tomoxetine, guanidine and methylphenidate were recommended as preferred drugs. For mild chronic tic disorders and TS comorbid with ADHD tomoxetine was preferred drug. When comorbid with sleep disorders, there were no preferred drugs for mild transient tic disorders; estazolam (3 (2, 3) scores) was the preferred drug for mild chronic tic disorders and TS comorbid with sleep disorders. For othe kind of tic disorders comorbid with sleep disorders, estazolam, melatonin and clonazepam were preferred drugs. When comorbid with anxiety and depressive disorders, for all kinds of tic disorders sertraline was recommended as preferred drugs, the median scores of sertraline were all (4 (3, 5) scores) in severe transient tic disorders, moderate to severe chronic tic disorders and moderate TS, and greater than overall scores (3 (3, 4) scores). While severe chronic tic disorders comorbid with anxiety and depressive disorders, fluvoxamine could also be chosen as preferred drugs. Conclusions: Drug therapy is not recommended for mild transient tic disorders, while tiapride, aripiprazole, clonidine, and haloperidol are mainly preferred drugs for the other kinds of tic disorders. Corresponding drugs should be selected when tic disorders are combined with obsessive-compulsive disorder, ADHD, sleep disorders, anxiety, depression, etc.
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Ezomo OT, Sun D, Gronbeck C, Harrington MA, Halawi MJ. Where Do We Stand Today on Racial and Ethnic Health Disparities? An Analysis of Primary Total Hip Arthroplasty From a 2011-2017 National Database. Arthroplast Today 2020; 6:872-876. [PMID: 33163602 PMCID: PMC7609456 DOI: 10.1016/j.artd.2020.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/11/2020] [Accepted: 10/04/2020] [Indexed: 12/20/2022] Open
Abstract
Background Little is known about the persistence of health disparities in joint arthroplasty. The objective of this study was to update our knowledge on the state of racial and ethnic disparities in total hip arthroplasty (THA). Methods Patients undergoing primary, elective THA using the 2011-2017 American College of Surgeons National Surgical Quality Improvement Program were retrospectively reviewed. Five minority groups (non-Hispanic black or African American, Hispanic or Latino, Asian, American Indian or Alaska Native, and Native Hawaiian or Pacific Islander) were compared with non-Hispanic whites. The primary outcomes were in the differences in demographic characteristics, comorbidities, perioperative characteristics, THA utilization, length of stay (LOS), and 30-day adverse events (mortality, readmission, reoperation, and complications). Results A total of 155,870 patients were identified with racial and ethnic data available on 134,961 (86.6%) of them. Non-Hispanic white patients comprised 74.5% of all THA procedures. Except for Asians, all minority groups were more likely to be younger, have a higher body mass index, and smoke tobacco (P < .001). There were higher rates of nonprimary osteoarthritis, procedure length exceeding 100 minutes, and comorbidities among all minority groups. All minority groups, except Asian and Hawaiians or Pacific Islanders, were more likely to require an LOS >2 days. Blacks were more likely to develop surgical or medical complications (odds ratio [OR]: 1.21 and 1.2, respectively), whereas Hispanics or Latinos were more likely to develop surgical complications (OR: 1.28). American Indians or Alaska Natives were more likely to undergo reoperations (OR: 1.91). Conclusions Health disparities persist among minority groups with respect to comorbidities, THA utilization, LOS, and complications. Blacks and Hispanics or Latinos appear to be the most impacted by these disparities.
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Gabryszewski S, Sun D, Jyonouchi S, Sullivan K, Henrickson S. M406 SELF-LIMITED COVID-19 INFECTION IN ARTEMIS HYPOMORPHIC SCID: ARE B CELLS DISPENSABLE? Ann Allergy Asthma Immunol 2020. [PMCID: PMC7661911 DOI: 10.1016/j.anai.2020.08.353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sun D, Brown-Whitehorn T, Alfaro M, Heimall J. A031 CURRENT PRACTICE OF IMMUNOPHENOTYPING PRE- AND POST- RITUXIMAB ADMINISTRATION. Ann Allergy Asthma Immunol 2020. [DOI: 10.1016/j.anai.2020.08.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sun D, Fan XH. LncRNA SNHG12 accelerates the progression of ovarian cancer via absorbing miRNA-129 to upregulate SOX4. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2020; 23:2345-2352. [PMID: 30964158 DOI: 10.26355/eurrev_201903_17378] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To clarify whether long non-coding RNA (lncRNA) SNHG12 could regulate the proliferative and migratory abilities of ovarian cancer (OC) cells through mediating microRNA-129 (miRNA-129), thus influencing the progression of OC. PATIENTS AND METHODS The expression patterns of SNHG12 and miRNA-129 in OC tissues and adjacent normal tissues were determined by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). Meanwhile, their expression levels in OC cell lines were also examined. Regulatory effects of SNHG12 and miRNA-129 on the proliferative and migratory abilities of OC cells were evaluated by cell counting kit-8 (CCK-8) and transwell assay, respectively. Through the dual-luciferase reporter gene assay, we explored the binding between miRNA-129 with SNHG12 and SOX4. A series of rescue experiments were conducted to clarify the role of SNHG12/miRNA-129/SOX4 regulatory loop in the progression of OC. RESULTS SNHG12 was upregulated in OC tissues relative to adjacent normal ones. Patients with metastatic OC or those in stage III-IV had a higher level of SNHG12 compared with non-metastatic or stage I-II patients. The 5-year survival was markedly worse in OC patients with high-level SNHG12 than those in the low-level group. Similarly, SNHG12 was highly expressed in OC cell lines. Overexpression of SNHG12 accelerated A2780 and HO8910 cells to proliferate and migrate. We observed the binding between SNHG12 and miRNA-129, and the latter was lowly expressed in OC. The miRNA-129 overexpression partially reversed the promotive effects of SNHG12 on proliferative and migratory abilities of OC cells. Subsequently, SOX4 was proved to be the target gene of miRNA-129. The SOX4 overexpression was further confirmed to reverse the inhibitory effects of miRNA-129 on proliferative and migratory abilities of OC cells. CONCLUSIONS SNHG12 accelerates the proliferative and migratory abilities of OC cells via sponging miRNA-129 to upregulate SOX4.
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Liu D, Jia S, Sun D, Wang SY, Meng FC, Guo WC. Rapamycin repairs damaged nerve cells and neurological function in rats with spinal cord injury through ERK signaling pathway. J BIOL REG HOMEOS AG 2020; 34:865-873. [PMID: 32689766 DOI: 10.23812/20-122-l-45] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The object of this study was to explore the effect of rapamycin regulating the proliferation of Schwann cells through activating the extracellular signal-regulated kinase (ERK) signaling pathway on rats with spinal cord injury (SCI). The rat Schwann cells were cultured and divided into solvent (DMSO) group, rapamycin (Rapa) group (1.5 nM, 3.0 nM, 6.0 nM, 12.0 nM, 24.0 nM and 48.0 nM), and Rapa + ERK inhibitor (PD98059) group (40 mM). The proliferation of Schwann cells was detected by MTS. Western blot was used to evaluate the expression of ERK and p-ERK protein. Moreover, the spinal cord compression injury rat model was established, and the rats were divided into normal control group, SCI group and Schwann cell transplantation group. The animal experiment ended 7 weeks after Schwann cells had been injected every day into the injured rats. In the second animal experiment, the rats were divided into DMSO group, Rapa group and Rapa + PD98059 group. The motor recovery of rats was evaluated using the Basso-Beattie-Bresnahan (BBB) score every week, and the proliferation of Schwann cells at the site of SCI was detected using immunohistochemistry. It was verified that lowdose rapamycin (1.5 nM) could significantly promote the proliferation of Schwann cells cultured in vitro (P<0.001), most significantly at 48 h. Rapamycin could activate the ERK signaling pathway. The results of the first animal experiment showed that the BBB score in Schwann cell transplantation group rose with time compared with that in SCI group (P<0.05). The BBB score was obviously increased in Rapa group compared with that in DMSO group and Rapa + PD98059 group (P<0.05). According to the results of Ki67 immunohistochemistry, the proliferation ability of Schwann cells at the site of SCI was remarkably stronger than that in the other two groups. Rapamycin regulates the proliferation of Schwann cells through the ERK signaling pathway. The proliferation of Schwann cells can effectively repair the damaged nerve cells and neurological function in SCI rats.
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Li JJ, Li DW, Yang W, Mo DC, Sun D, Peng L. [Application of intestinal stent in prevention of anastomotic leakage after rectal cancer operation]. ZHONGHUA WEI CHANG WAI KE ZA ZHI = CHINESE JOURNAL OF GASTROINTESTINAL SURGERY 2020; 23:602-605. [PMID: 32521983 DOI: 10.3760/cma.j.cn.441530-20200228-00094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Objective: To observe preventive effect of intestinal stent against anastomotic leakage after rectal cancer operation. Methods: A retrospective cohort study was carried out. Clinical data of 107 patients with low rectal cancer undergoing laparoscopic radical resection from January 2015 to August 2019 were retrospectively analyzed. Intestinal stent was placed intraoperatively in 48 cases and was not placed in 59 cases. Postoperative Wexner score for anal function and incidence of anastomotic leakage were compared between patients with and without intstinal stent. Results: There was no significant differences in age, distance between tumor and the anal verge, operative time and postoperative Wexner score for anal function between the two groups (all P>0.05). After a month of follow-up, the incidence of anastomotic leakage was 16.9% (10/59) in the non-stent group, while no anastomotic leakage was found in the stent group (P=0.002). Conclusion: Placement of intestinal stent can effectively prevent anastomotic leakage after low rectal cancer surgery.
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Sun D, Cheng Z, Jiang TC, Li PF, Jia LQ, Wang TT, Zheng CP, Li Y, Duo MJ. [Characteristics and clinical significance of pulmonary function test and KL-6 in ASSD-ILD and IPF]. ZHONGHUA YI XUE ZA ZHI 2020; 100:748-752. [PMID: 32192286 DOI: 10.3760/cma.j.cn112137-20191008-02166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the characteristics and clinical significance of pulmonary function test and kerbs von den lungen 6 (KL-6) in anti-synthetase syndrome related interstitial lung disease (ASSD-ILD) and idiopathic pulmonary fibrosis (IPF). Methods: The clinical data of 43 patients with ASSD-ILD (ASSD-ILD group) from May 2015 to May 2017 were collected retrospectively, including 12 males and 31 females, and 34 patients with IPF (IPF group) treated in the First Affiliated Hospital of Zhengzhou University during the same period, including 28 males and 6 females, were also included. The basic information, and the value of pulmonary function test [pulmonary function parameters included the forced vital capacity expressed as percent predicted (FVC%pred), the forced expiratory volume in 1 second expressed as percent predicted (FEV(1)%pred), the ratio of FVC to FEV(1) (FVC/FEV(1)), the peak expiratory flow expressed as percent predicted (PEF%pred), the forced expiratory flow at 25%, 50%, 75% of FVC as percent predicted (FEF(25)%pred, FEF(50)%pred, and FEF(75)%pred), the maximum mid-expiratory flow as percent predicted (MMEF% pred), and the diffusing capacity for carbon monoxide as percent predicted (DLCO% pred)], and serum KL-6 level in ASSD-ILD and IPF were compared. Results: The FEV(1)%pred, FEF(50)%pred, FEF(75)%pred, and MMEF%pred values in ASSD-ILD group were significantly lower than those in IPF group (all P<0.05), while the FVC% pred, FVC/FEV(1), PEF% pred, FEF(25)%pred, and DLCO% pred values in ASSD-ILD group had no significant difference compared with IPF group (all P>0.05). There was no significant difference in serum KL-6 level between ASSD-ILD group and IPF group [(1 169±911) vs (1 210±908) U/ml, t=0.62, P=0.463]. Follow-up analysis showed that the serum KL-6 level of ASSD-ILD patients who died within two years was significantly higher than that of survivors [(2 060±1 168) vs (1 042±858) U/ml, t=2.93, P=0.041]. The serum KL-6 level of patients who died within two years of IPF patients was also significantly higher than that of patients who survived [(1 767±865) vs (1 089±894) U/ml, t=2.53, P=0.026]. The serum KL-6 level in ASSD-ILD group was negatively correlated with FVC%pred (r=-0.43, P=0.004), FEV(1)%pred (r=-0.39, P=0.010) and DLCO% pred (r=-0.41, P=0.006). There was no correlation between serum KL-6 level and pulmonary function test indexes in IPF group (all P>0.05). Conclusions: There is difference in pulmonary function test between ASSD-ILD patients and IPF patients. High serum KL-6 level will be predictive of poor prognosis.
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Tweedie M, Sun D, Gajula DR, Ward B, Maguire PD. The analysis of dissolved inorganic carbon in liquid using a microfluidic conductivity sensor with membrane separation of CO 2. MICROFLUIDICS AND NANOFLUIDICS 2020; 24:37. [PMID: 32362805 PMCID: PMC7183500 DOI: 10.1007/s10404-020-02339-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 04/02/2020] [Indexed: 06/01/2023]
Abstract
Autonomous continuous analysis of oceanic dissolved inorganic carbon (DIC) concentration with depth is of great significance with regard to ocean acidification and climate change. However, miniaturisation of in situ analysis systems is hampered by the size, cost and power requirements of traditional optical instrumentation. Here, we report a low-cost microfluidic alternative based on CO2 separation and conductance measurements that could lead to integrated lab-on-chip systems for ocean float deployment, or for moored or autonomous surface vehicle applications. Conductimetric determination of concentration, in the seawater range of 1000-3000 µmol kg-1, has been achieved using a microfluidic thin-film electrode conductivity cell and a membrane-based gas exchange cell. Sample acidification released CO2 through the membrane, reacting in a NaOH carrier, later drawn through a sub-µL conductivity cell, for impedance versus time measurements. Precision values (relative standard deviations) were ~ 0.2% for peak height measurements at 2000 µmol kg-1. Comparable precision values of ~ 0.25% were obtained using a C4D electrophoresis headstage with similar measurement volume. The required total sample and reagent volumes were ~ 500 µL for the low volume planar membrane gas exchange cell. In contrast, previous conductivity-based DIC analysis systems required total volumes between 5000 and 10,000 µL. Long membrane tubes and macroscopic wire electrodes were avoided by incorporating a planar membrane (PDMS) in the gas exchange cell, and by sputter deposition of Ti/Au electrodes directly onto a thermoplastic (PMMA) manifold. Future performance improvements will address membrane chemical and mechanical stability, further volume reduction, and component integration into a single manifold.
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Shi L, Liu L, Lv X, Ma Z, Li C, Li Y, Zhao F, Sun D, Han B. Identification of genetic effects and potential causal polymorphisms of CPM gene impacting milk fatty acid traits in Chinese Holstein. Anim Genet 2020; 51:491-501. [PMID: 32301146 DOI: 10.1111/age.12936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/03/2020] [Accepted: 03/15/2020] [Indexed: 11/27/2022]
Abstract
Our previous GWAS revealed 83 significant SNPs and 20 promising candidate genes associated with milk fatty acid traits in dairy cattle. Out of them, the carboxypeptidase M (CPM) gene contains a genome-wide significant SNP, Hapmap49848-BTA-106779, which is strongly associated with myristic acid (C14:0; P = 0.0064). Herein, we aimed to confirm the genetic effects of CPM on milk fatty acids in Chinese Holstein. Seven SNPs were detected by re-sequencing the sequences of entire exons and 3000 bp of up-/downstream flanking regions of the CPM gene, of which three were in 5' flanking region, one in the 3' UTR and three were in the 3' flanking region. Using the Haploview 4.1, we estimated the LD among the identified SNPs and found two haplotype blocks. With the animal model, we performed the SNP- and haplotype-based association analyses, and observed that these SNPs and haplotype blocks mainly had strong genetic associations with medium-chain saturated fatty acids (caproic acid, C6:0; caprylic acid, C8:0; capric acid, C10:0; and lauric acid, C12:0) (P < 0.0001-0.0257). In addition, using the Genomatix software, we predicted that three SNPs in the 5' flanking region of CPM (g.45079507A>G, g.45080228C>A and g.45080335C>G) changed the transcription factor binding sites for PREF (progesterone receptor biding site), ZBRK1 (transcription factor with eight central zinc fingers and an N-terminal KRAB domain), SOX9 (sex-determining region Y-box 9, dimeric binding sites), SOX6 (sex-determining region Y-box 6) and FOXP1-ES (alternative splicing variant of FOXP1, activated in ESCs). Further, the dual-luciferase reporter assay showed these three SNPs altered the transcriptional activity of CPM gene (P ≤ 0.0006). In summary, using the post-GWAS strategy, we first confirmed the significant genetic effects of CPM with milk fatty acids in dairy cattle, and identified three potential causal mutations.
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Yang M, Cousineau A, Liu X, Luo Y, Sun D, Li S, Gu T, Sun L, Dillow H, Lepine J, Xu M, Zhang B. Direct Metatranscriptome RNA-seq and Multiplex RT-PCR Amplicon Sequencing on Nanopore MinION - Promising Strategies for Multiplex Identification of Viable Pathogens in Food. Front Microbiol 2020; 11:514. [PMID: 32328039 PMCID: PMC7160302 DOI: 10.3389/fmicb.2020.00514] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/10/2020] [Indexed: 12/20/2022] Open
Abstract
Viable pathogenic bacteria are major biohazards that pose a significant threat to food safety. Despite the recent developments in detection platforms, multiplex identification of viable pathogens in food remains a major challenge. A novel strategy is developed through direct metatranscriptome RNA-seq and multiplex RT-PCR amplicon sequencing on Nanopore MinION to achieve real-time multiplex identification of viable pathogens in food. Specifically, this study reports an optimized universal Nanopore sample extraction and library preparation protocol applicable to both Gram-positive and Gram-negative pathogenic bacteria, demonstrated using a cocktail culture of E. coli O157:H7, Salmonella enteritidis, and Listeria monocytogenes, which were selected based on their impact on economic loss or prevalence in recent outbreaks. Further evaluation and validation confirmed the accuracy of direct metatranscriptome RNA-seq and multiplex RT-PCR amplicon sequencing using Sanger sequencing and selective media. The study also included a comparison of different bioinformatic pipelines for metatranscriptomic and amplicon genomic analysis. MEGAN without rRNA mapping showed the highest accuracy of multiplex identification using the metatranscriptomic data. EPI2ME also demonstrated high accuracy using multiplex RT-PCR amplicon sequencing. In addition, a systemic comparison was drawn between Nanopore sequencing of the direct metatranscriptome RNA-seq and RT-PCR amplicons. Both methods are comparable in accuracy and time. Nanopore sequencing of RT-PCR amplicons has higher sensitivity, but Nanopore metatranscriptome sequencing excels in read length and dealing with complex microbiome and non-bacterial transcriptome backgrounds.
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Zhu HM, Sun D, Wu GF, Hu JS, Qian QQ, Liu ZS. [Overlapping syndrome of myelin oligodendrocyte glycoprotein-antibody disease and anti-N-methyl-D-aspartate receptor encephalitis in two children]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2020; 58:324-326. [PMID: 32234141 DOI: 10.3760/cma.j.cn112140-20190916-00588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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