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Yang Y, Li J, Yao W, Zou G, Ye X, Mo Q. Diagnostic value of urine cyclic RNA-0071196 for bladder urothelial carcinoma. BMC Urol 2024; 24:88. [PMID: 38627689 PMCID: PMC11020766 DOI: 10.1186/s12894-024-01466-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 03/25/2024] [Indexed: 04/19/2024] Open
Abstract
OBJECTIVE To investigate the diagnostic value of urine cyclic RNA-0071196 (circRNA-0071196) in the patients with bladder urothelial carcinoma (BUC). METHOD The expression of circRNA-0071196 was detected in the urine samples using qRT-PCR from 40 BUC patients and 30 non-UBC patients at our department from December 2018 to September 2021. The expression difference of circRNA-0071196 was compared between the two groups, and the relationship between the expression of circRNA-0071196 in the urine of UBC patients and the clinical pathological characteristics was analyzed. RESULTS (1) The expression of circRNA-0071196 in the urine of BUC group was significantly higher than that in the non-BUC group (P < 0.05). (2) The expression of circRNA-0071196 in the urine of BUC group was not related to age, sex, or lymph node metastasis (P > 0.05). (3) The expression of circRNA-0071196 in the urine of BUC group was related to tumor T stage, tumor grade and muscle invasion. (4) The urine circRNA-0071196 expression effectively distinguished BUC patients from non-BUC patients. CONCLUSION The elevated expression of urine circRNA-0071196 in BUC patients indicates that circRNA-0071196 has promising potential as a non-invasive urinary biomarker for detecting BUC.
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Affiliation(s)
- Yang Yang
- Department of Urology, Panyu District Central Hospital, No.8 Fuyu East Road, Guangzhou, 510000, China
| | - Jun Li
- Department of Urology, Panyu District Central Hospital, No.8 Fuyu East Road, Guangzhou, 510000, China
| | - Weixiang Yao
- Department of Urology, Panyu District Central Hospital, No.8 Fuyu East Road, Guangzhou, 510000, China
| | - Ge Zou
- Department of Urology, Panyu District Central Hospital, No.8 Fuyu East Road, Guangzhou, 510000, China
| | - Xuying Ye
- Department of Urology, Panyu District Central Hospital, No.8 Fuyu East Road, Guangzhou, 510000, China
| | - Qishan Mo
- Department of Urology, Panyu District Central Hospital, No.8 Fuyu East Road, Guangzhou, 510000, China.
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Yang W, Zhang B, Tan Q, Chen Y, Chen T, Zou G, Sun B, Wang B, Yuan J, She Z. 4-Hydroxy-2-pyridone derivatives with antitumor activity produced by mangrove endophytic fungus Talaromyces sp. CY-3. Eur J Med Chem 2024; 269:116314. [PMID: 38527379 DOI: 10.1016/j.ejmech.2024.116314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/21/2024] [Accepted: 03/07/2024] [Indexed: 03/27/2024]
Abstract
OSMAC strategy is a useful tool for discovering series of metabolites from microorganism. Five new sambutoxin derivatives (1-2, 4, 8-9), together with seven known compounds (3, 5-7, 10-12), were isolated from Talaromyces sp. CY-3 under OSMAC strategy and guidance of molecular networking. Their planar structures and absolute configurations were determined by NMR, HRESIMS, ECD spectra and common biosynthetic pathway. In bioassay, compounds 1-12 showed cytotoxicity to tumor cell lines with IC50 values in the range of 1.76-49.13 μM. The antitumor molecular mechanism of 10 was also explored. In vitro compound 10 significantly inhibited the growth and proliferation of two lung cancer cell lines (A549 and H1703). Furthermore, colony formation, EdU analysis, flow cytometry and Western blot analysis showed that 10 could induce cell cycle arrest in G0/G1 phase by promoting the expression of p53 and p21. The molecular mechanism of its antitumor effects in vitro is that 10 arrests the cell cycle by activating the p21/CyclinD1/Rb signaling pathway and the p53 pathway. Our results identified a lead small molecule compound with efficient antitumor growth and proliferation activity.
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Affiliation(s)
- Wencong Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China; School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, PR China
| | - Bingzhi Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China; Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, PR China
| | - Qi Tan
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Yan Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China; School of Pharmacy, Anhui Medical University, Hefei, 230032, PR China
| | - Tao Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Ge Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Bing Sun
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Bo Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China.
| | - Jie Yuan
- Key Laboratory of Tropical Disease Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, PR China; Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, PR China.
| | - Zhigang She
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China.
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Zou G, Yang W, Chen T, Liu Z, Chen Y, Li T, Said G, Sun B, Wang B, She Z. Griseofulvin enantiomers and bromine-containing griseofulvin derivatives with antifungal activity produced by the mangrove endophytic fungus Nigrospora sp. QQYB1. Mar Life Sci Technol 2024; 6:102-114. [PMID: 38433970 PMCID: PMC10902243 DOI: 10.1007/s42995-023-00210-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 10/08/2023] [Indexed: 03/05/2024]
Abstract
Marine microorganisms have long been recognized as potential sources for drug discovery. Griseofulvin was one of the first antifungal natural products and has been used as an antifungal agent for decades. In this study, 12 new griseofulvin derivatives [(±)-1-2, (+)-3, (±)-4, 10-12, and 14-15] and two new griseofulvin natural products (9 and 16) together with six known analogues [(-)-3, 5-8, and 13] were isolated from the mangrove-derived fungus Nigrospora sp. QQYB1 treated with 0.3% NaCl or 2% NaBr in rice solid medium. Their 2D structures and absolute configurations were established by extensive spectroscopic analysis (1D and 2D NMR, HRESIMS), ECD spectra, computational calculation, DP4 + analysis, and X-ray single-crystal diffraction. Compounds 1-4 represent the first griseofulvin enantiomers with four absolute configurations (2S, 6'S; 2R, 6'R; 2S, 6'R; 2R, 6'S), and compounds 9-12 represent the first successful production of brominated griseofulvin derivatives from fungi via the addition of NaBr to the culture medium. In the antifungal assays, compounds 6 and 9 demonstrated significant inhibitory activities against the fungi Colletotrichum truncatum, Microsporum gypseum, and Trichophyton mentagrophyte with inhibition zones varying between 28 and 41 mm (10 μg/disc). The structure-activity relationship (SAR) was analyzed, which showed that substituents at C-6, C-7, C-6' and the positions of the carbonyl and double bond of griseofulvin derivatives significantly affected the antifungal activity. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-023-00210-0.
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Affiliation(s)
- Ge Zou
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
| | - Wencong Yang
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
| | - Tao Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
| | - Zhaoming Liu
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070 China
| | - Yan Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
- School of Pharmacy, Anhui Medical University, Hefei, 230032 China
| | - Taobo Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
| | - Gulab Said
- Department of Chemistry, Women University Swabi, Swabi, 23430 Pakistan
| | - Bing Sun
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
| | - Bo Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
| | - Zhigang She
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275 China
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Yin Y, Yang W, Chen T, Tan Q, Zou G, Zang Z, Li J, Wang B, She Z. Cytosporones W and X: Two Mutually Converting Epimers from a Mangrove Endophytic Fungus Diaporthe sp. ZJHJYZ-1. ACS Omega 2023; 8:26628-26634. [PMID: 37521628 PMCID: PMC10373200 DOI: 10.1021/acsomega.3c03862] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023]
Abstract
Two new octaketides, cytosporones W (1) and X (2), along with eight known cytosporone derivatives [(±)-3-9], were isolated from mangrove endophytic fungus Diaporthe sp. ZJHJYZ-1. Compounds 1 and 2 were a pair of epimers, whose configuration of C-1 could mutually convert, causing racemization of the lactone ring. The planar structures of compounds were elucidated through detailed 1D, 2D NMR, and HR-ESI-MS analysis. ECD spectra comparison and modified Mosher ester method were applied to determine the absolute configuration of 1 and 2. In bioassays, (±)-3 exhibited promising inhibitory activities against Bacillus subtilis, Pseudomonas aeruginosa, and Penicillium italicum with MIC, respectively, for 12.5, 12.5, and 3.13 μM.
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He J, Han Z, Luo W, Shen J, Xie F, Liao L, Zou G, Luo X, Guo Z, Li Y, Li J, Chen H. Serum organic acid metabolites can be used as potential biomarkers to identify prostatitis, benign prostatic hyperplasia, and prostate cancer. Front Immunol 2023; 13:998447. [PMID: 36685547 PMCID: PMC9846500 DOI: 10.3389/fimmu.2022.998447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/01/2022] [Indexed: 01/06/2023] Open
Abstract
Background Noninvasive methods for the early identify diagnosis of prostatitis, benign prostatic hyperplasia (BPH), and prostate cancer (PCa) are current clinical challenges. Methods The serum metabolites of 20 healthy individuals and patients with prostatitis, BPH, or PCa were identified using untargeted liquid chromatography-mass spectrometry (LC-MS). In addition, targeted LC-MS was used to verify the organic acid metabolites in the serum of a validation cohort. Results Organic acid metabolites had good sensitivity and specificity in differentiating prostatitis, BPH, and PCa. Three diagnostic models identified patients with PROSTATITIS: phenyllactic acid (area under the curve [AUC]=0.773), pyroglutamic acid (AUC=0.725), and pantothenic acid (AUC=0.721). Three diagnostic models identified BPH: citric acid (AUC=0.859), malic acid (AUC=0.820), and D-glucuronic acid (AUC=0.810). Four diagnostic models identified PCa: 3-hydroxy-3-methylglutaric acid (AUC=0.804), citric acid (AUC=0.918), malic acid (AUC=0.862), and phenyllactic acid (AUC=0.713). Two diagnostic models distinguished BPH from PCa: phenyllactic acid (AUC=0.769) and pyroglutamic acid (AUC=0.761). Three diagnostic models distinguished benign BPH from PROSTATITIS: citric acid (AUC=0.842), ethylmalonic acid (AUC=0.814), and hippuric acid (AUC=0.733). Six diagnostic models distinguished BPH from prostatitis: citric acid (AUC=0.926), pyroglutamic acid (AUC=0.864), phenyllactic acid (AUC=0.850), ethylmalonic acid (AUC=0.843), 3-hydroxy-3-methylglutaric acid (AUC=0.817), and hippuric acid (AUC=0.791). Three diagnostic models distinguished PCa patients with PROSTATITISA < 4.0 ng/mL from those with PSA > 4.0 ng/mL: 5-hydromethyl-2-furoic acid (AUC=0.749), ethylmalonic acid (AUC=0.750), and pyroglutamic acid (AUC=0.929). Conclusions: These results suggest that serum organic acid metabolites can be used as biomarkers to differentiate prostatitis, BPH, and PCa.
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Affiliation(s)
- Jinhua He
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China
| | - Zeping Han
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China
| | - Wenfeng Luo
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China
| | - Jian Shen
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China
| | - Fangmei Xie
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China
| | - Liyin Liao
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China
| | - Ge Zou
- Urinary Surgery Department, Central Hospital of Panyu District, Guangzhou, China
| | - Xin Luo
- Urinary Surgery Department, Central Hospital of Panyu District, Guangzhou, China
| | - Zhonghui Guo
- He Xian Memorial Hospital, Southern Medical University, Guangzhou, China
| | - Yuguang Li
- He Xian Memorial Hospital, Southern Medical University, Guangzhou, China,*Correspondence: Hanwei Chen, ; Yuguang Li, ; Jianhao Li,
| | - Jianhao Li
- Institute of Cardiovascular Medicine, Central Hospital of Panyu District, Guangzhou, China,*Correspondence: Hanwei Chen, ; Yuguang Li, ; Jianhao Li,
| | - Hanwei Chen
- Central Laboratory, Central Hospital of Panyu District, Guangzhou, China,Medical Imaging Institute, Central Hospital of Panyu District, Guangzhou, China,*Correspondence: Hanwei Chen, ; Yuguang Li, ; Jianhao Li,
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Stranges S, Rodrigues R, Anderson K, Alonzo R, Wilk P, Reid G, Gilliland J, Zou G, Nicholson K, Guaiana G. Impact of Neighborhood and Environmental Factors on Sleep Health Among Middle-Aged and Older Adults in the Canadian Longitudinal Study on Aging. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Stranges S, Rodrigues R, Anderson K, Alonzo R, Wilk P, Reid G, Gilliland J, Zou G, Nicholson K, Guaiana G. Who Sleeps Well in Canada? Social Determinants of Sleep Health Disparities Among Middle-Aged and Older Adults in the Canadian Longitudinal Study on Aging. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Scognamiglio Renner Araujo C, Medeiros Ribeiro AC, Saad C, Bonfiglioli K, Domiciano DS, Yukie Shimabuco A, Rodrigues Silva M, Neves E, Pasoto S, Pedrosa T, Kanda Kupa L, Zou G, Pereira RM, Silva CA, Aikawa N, Bonfa E. POS0259 A RANDOMIZED CLINICAL TRIAL OF 2-WEEK METHOTREXATE DISCONTINUATION IN RHEUMATOID ARTHRITIS PATIENTS VACCINATED WITH INACTIVATED SARS-COV-2 VACCINE. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundPatients with rheumatoid arthritis (RA) on methotrexate have reduced vaccine responses. Temporary discontinuation has improved immunogenicity of anti-influenza vaccine, but this strategy has not been evaluated in anti-SARS-CoV-2 vaccines.ObjectivesTo evaluate the effect on immunogenicity and safety of 2-week methotrexate (MTX) discontinuation after each dose of the Sinovac-CoronaVac vaccine versus MTX maintenance in rheumatoid arthritis (RA) patients.MethodsThis was a single-center, prospective, randomized, investigator-blinded, intervention study (#NCT04754698, CoronavRheum), including adult RA patients (stable CDAI≤10, prednisone ≤7.5mg/day), randomized (1:1) to withdraw MTX (MTX-hold) for 2 weeks after each vaccine dose or maintain MTX (MTX-maintain), evaluated at D0, D28 and D69. Co-primary outcomes were anti-SARS-CoV-2 S1/S2 IgG seroconversion(SC) and neutralizing antibody (NAb) positivity at D69. Secondary outcomes were geometric mean titers (GMT) and flare rates. For immunogenicity analyses, we excluded patients with baseline positive IgG/NAb, and, for safety reasons, those who flared at D28 (CDAI>10) and did not withdraw MTX twice.ResultsRandomization included 138 patients with 9 exclusions (5 COVID-19, 4 protocol violations). Safety evaluation included 60 (MTX-hold) and 69 (MTX-maintain) patients. Further exclusions: 27 patients [13 (21.7%) vs. 14 (20.3%), p=0.848] with positive baseline IgG/NAb and 10 patients (21.3%) in MTX-hold with CDAI>10 at D28. At D69, MTX-hold (n=37) had a higher rate of seroconversion than MTX-maintain (n=55) group [29 (78.4%) vs 30 (54.5%), p=0.019], with parallel augmentation in GMT [34.2 (25.2-46.4) vs 16.8 (11.9-23.6), p=0.006]. No differences were observed for NAb positivity [23 (62.2%) vs 27 (49.1%), p=0.217]. At D28 flare, rates were comparable in both groups (CDAI, p=0.122; DAS28-CRP, p=0.576), whereas CDAI>10 was more frequent in MTX-hold at D69 (p=0.024).Figure 1.ConclusionWe provide novel data that 2-week MTX withdrawal after each Sinovac-CoronaVac vaccine dose improves anti-SARS-CoV-2 IgG response. The increased flare rates after second MTX withdrawal may be attributed to the short-term interval between vaccine doses. This strategy requires close surveillance and shared decision making due to the possibility of flares.References[1]Jara A, Undurraga EA, González C, et al. Effectiveness of an inactivated SARS-CoV-2 vaccine in Chile. N Eng J Med. 2021 Sep 2;385(10):875-84. doi: 10.1056/NEJMoa2107715[2]Furer V, Eviatar T, Zisman D, et al. Lb0003 Immunogenicity and Safety of the BNT162B2 mRNA Covid-19 Vaccine in Adult Patients with Autoimmune Inflammatory Rheumatic Diseases and General Population: a Multicenter Study. Ann Rheum Dis. 2021;80:200-201. doi: 10.1136/annrheumdis-2021-220647[3]Medeiros-Ribeiro AC, Aikawa NE, Saad CG, et al. Immunogenicity and safety of the CoronaVac inactivated vaccine in patients with autoimmune rheumatic diseases: a phase 4 trial. Nat. Med. 2021 Jul 30:1-8. doi: 10.1038/s41591-021-01469-5.[4]Park JK, Lee MA, Lee EY, et al. Effect of methotrexate discontinuation on efficacy of seasonal influenza vaccination in patients with rheumatoid arthritis: a randomised clinical trial. Ann Rheum Dis. 2017 Sep 1;76(9):1559-65. http://dx.doi.org/10.1136/annrheumdis-2017-211128[5]Park JK, Lee YJ, Shin K, et al. Impact of temporary methotrexate discontinuation for 2 weeks on immunogenicity of seasonal influenza vaccination in patients with rheumatoid arthritis: a randomised clinical trial. Ann Rheum Dis. 2018 Jun 1;77(6):898-904. http://dx.doi.org/10.1136/annrheumdis-2018-213222AcknowledgementsThis protocol is part of a larger study of immunosuppressed patients with ARD (Clinicaltrials.gov#NCT04754698)Disclosure of InterestsNone declared
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Chen Y, Yang W, Zou G, Wang G, Kang W, Yuan J, She Z. Cytotoxic Bromine- and Iodine-Containing Cytochalasins Produced by the Mangrove Endophytic Fungus Phomopsis sp. QYM-13 Using the OSMAC Approach. J Nat Prod 2022; 85:1229-1238. [PMID: 35473314 DOI: 10.1021/acs.jnatprod.1c01115] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Twelve new cytochalasins, phomopchalasins D-O (1-3, 5-12, and 14), including one brominated (2) and two iodinated cytochalasins (3 and 6), together with six known analogues (4, 13, and 15-18) were isolated from the mangrove-derived fungus Phomopsis sp. QYM-13 treated with 3% NaBr or 3% KI in potato liquid medium. Their structures and absolute configurations were established by extensive spectroscopic analysis (1D and 2D NMR, HRESIMS), electronic circular dichroism calculations, and a single-crystal X-ray diffraction experiment. Compounds 3 and 6 represent the first iodinated cytochalasins. Compounds 2, 15, 17, and 18 exhibited significant cytotoxicity against human cancer cell line MDA-MB-435 with IC50 values ranging from 0.2 to 8.2 μM.
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Affiliation(s)
- Yan Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China
| | - Wencong Yang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Ge Zou
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Guisheng Wang
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China
| | - Wenyi Kang
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China
| | - Jie Yuan
- Key Laboratory of Tropical Disease Control, Sun Yat-sen University, Ministry of Education, Guangzhou 510080, China
| | - Zhigang She
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
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Zang Z, Yang W, Cui H, Cai R, Li C, Zou G, Wang B, She Z. Two Antimicrobial Heterodimeric Tetrahydroxanthones with a 7,7'-Linkage from Mangrove Endophytic Fungus Aspergillus flavus QQYZ. Molecules 2022; 27:molecules27092691. [PMID: 35566042 PMCID: PMC9103106 DOI: 10.3390/molecules27092691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/15/2022] [Accepted: 04/15/2022] [Indexed: 11/25/2022] Open
Abstract
Mangrove endophytic fungi represent significant and sustainable sources of novel metabolites with unique structures and excellent biological activities, attracting extensive chemical investigations. In this research, two novel heterodimeric tetrahydroxanthones, aflaxanthones A (1) and B (2), dimerized via an unprecedented 7,7′-linkage, a sp3-sp3 dimeric manner, were isolated from the mangrove endophytic fungus Aspergillus flavus QQYZ. Their structures were elucidated through high resolution electrospray ionization mass spectroscopy (HRESIMS) and nuclear magnetic resonance (NMR) spectroscopy, the absolute configurations of them were determined by a single-crystal X-ray diffraction combined with calculated electronic circular dichroism (ECD) spectra and a 1D potential energy scan. These compounds were evaluated for antifungal activities in vitro and exhibited broad-spectrum and potential antifungal activities against several pathogenic fungi with minimum inhibitory concentration (MIC) values in the range of 3.13–50 μM. They also performed moderate antibacterial activities against several bacteria with MIC values in the range of 12.5–25 μM. This research enriched the resources of lead compounds and templates for marine-derived antimicrobial drugs.
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Affiliation(s)
- Zhenming Zang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (Z.Z.); (W.Y.); (G.Z.)
| | - Wencong Yang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (Z.Z.); (W.Y.); (G.Z.)
| | - Hui Cui
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China;
| | - Runlin Cai
- College of Science, Shantou University, Shantou 515063, China;
| | - Chunyuan Li
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China;
| | - Ge Zou
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (Z.Z.); (W.Y.); (G.Z.)
| | - Bo Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (Z.Z.); (W.Y.); (G.Z.)
- Correspondence: (B.W.); (Z.S.); Tel.: +86-20-84113356 (Z.S.)
| | - Zhigang She
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (Z.Z.); (W.Y.); (G.Z.)
- Correspondence: (B.W.); (Z.S.); Tel.: +86-20-84113356 (Z.S.)
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Chen Y, Wang G, Yuan Y, Zou G, Yang W, Tan Q, Kang W, She Z. Metabolites With Cytotoxic Activities From the Mangrove Endophytic Fungus Fusarium sp. 2ST2. Front Chem 2022; 10:842405. [PMID: 35242743 PMCID: PMC8885587 DOI: 10.3389/fchem.2022.842405] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/12/2022] [Indexed: 11/13/2022] Open
Abstract
Two new 3-decalinoyltetramic acid derivatives with peroxide bridge fusarisetins E (1) and F (2), one new chromone fusarimone A (5), two new benzofurans fusarifurans A (9) and B (10), three new isocoumarins fusarimarins A–C (11–13), as well as five known analogues 3, 4, 6–8 and 14 were isolated from mangrove endophytic fungus Fusarium sp. 2ST2. Their structures and absolute configurations were established by spectroscopic analysis, density functional theory-gauge invariant atomic orbital NMR calculation with DP4+ statistical analysis, and electronic circular dichroism calculation. Compounds 1 and 2 showed significant cytotoxicity against human A549 cell lines with IC50 values of 8.7 and 4.3 μM, respectively.
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Affiliation(s)
- Yan Chen
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
- School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Guisheng Wang
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
| | - Yilin Yuan
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
| | - Ge Zou
- School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Wencong Yang
- School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Qi Tan
- School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Wenyi Kang
- National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
- *Correspondence: Wenyi Kang, ; Zhigang She,
| | - Zhigang She
- School of Chemistry, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Wenyi Kang, ; Zhigang She,
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12
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JIANG S, Jiao Y, Yu T, Zou G, Gao H, Zhuo L, Li W. POS-333 Local activation of complement C3 in kidney tissue mediates diabetic tubulointerstitial injury. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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13
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Howard CW, Zou G, Morrow SA, Fridman S, Racosta JM. Wilcoxon-Mann-Whitney odds ratio: A statistical measure for ordinal outcomes such as EDSS. Mult Scler Relat Disord 2022; 59:103516. [PMID: 35123291 DOI: 10.1016/j.msard.2022.103516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/13/2021] [Accepted: 01/08/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND In many clinical situations, ordinal scales afford the primary method of semi-quantifying patient outcomes. In the field of multiple sclerosis, the primary ordinal scale is the Expanded Disability Status Scale. Predominant methods of ordinal scale statistical analysis provide a p-value without effect size or rely heavily on the assumption of proportionality of odds, subjecting them to lack of power and error. The Wilcoxon-Manny-Whitney Odds is a statistical method which provides significant information such as p-value, effect size, number needed to treat, confidence intervals, and is largely assumption-free. However, its utility has not been demonstrated in the field of multiple sclerosis. METHODS Three clinical studies in the field of multiple sclerosis were selected which utilized ordinal scale outcomes at group or individual levels. Data from these studies was extracted using WebPlotDigitizer, and a custom Wilxocon-Mann-Whitney Odds software was applied to each dataset to re-analyze the main outcomes of the studies. RESULTS Re-analysis of the manuscript by Muraro et al., 2017 demonstrated that autologous stem cell transplantation for relapsing remitting multiple sclerosis resulted in a 65% chance of improving from any Expanded Disability Status Scale category, although not significant. Re-analysis of the manuscript by Songthammawat et al., 2019 demonstrated chance of improvement with intravenous methylprednisolone and concurrent plasma exchange was 185% versus 32% in intravenous methylprednisolone with add-on plasma exchange, although not significant. Re-analysis of Kister et al., 2012 demonstrated the chances of mobility or cognition scores generally favored decline at every 5-year increment of study, and although statistically significant, these were smaller effect sizes ranging from an 11% chance of improvement to a 66% chance of decline over a 5-year interval. DISCUSSION The Wilcoxon-Mann-Whitney Odds simplifies ordinal data analysis with its robust largely assumption-free nature. In the place of numerous statistical tests, this single test provides effect size estimate, number needed to treat, p-values, and confidence intervals. Importantly, the Wilcoxon-Mann-Whitney Odds effect size calculation is intuitively applicable to both individual and population-levels. Further, the Wilcoxon-Mann-Whitney Odds allows intuitive description of the progression of large cohorts over time, and we were able to clearly convey the odds of mobility and cognitive decline over 30 years in a large multiple sclerosis cohort. Overall, the Wilcoxon-Mann-Whitney Odds is a powerful and robust statistical test with significant promise within the field of multiple sclerosis.
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Affiliation(s)
- C W Howard
- Section of Neurology, Department of Internal Medicine, University of Manitoba, Manitoba, Canada.
| | - G Zou
- Dept of Epidemiology and Biostatistics, Western University, London, Canada; Robarts Research Institute, Western University, London, Canada
| | - S A Morrow
- Department of Clinical Neurological Sciences, Western University, London, Ontario, Canada
| | - S Fridman
- Department of Clinical Neurological Sciences, Western University, London, Ontario, Canada
| | - J M Racosta
- Department of Clinical Neurological Sciences, Western University, London, Ontario, Canada; The London MS Epidemiology Laboratory. London, Ontario, Canada
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14
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Yang W, Yuan J, Tan Q, Chen Y, Zhu Y, Jiang H, Zou G, Zang Z, Wang B, She Z. Peniazaphilones A—I, Produced by Co‐culturing of Mangrove Endophytic Fungi,
Penicillium sclerotiorum
THSH
‐4 and
Penicillium sclerotiorum
ZJHJJ
‐18. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wencong Yang
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Jie Yuan
- Department of Biochemistry Zhongshan School of Medicine Sun Yat‐Sen University Guangzhou Guangdong 510080 China
- Key Laboratory of Tropical Disease Control, Sun Yat‐Sen University, Ministry of Education Guangzhou Guangdong 510080 China
| | - Qi Tan
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Yan Chen
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
- National R & D Center for Edible Fungus Processing Technology Henan University Kaifeng Henan 475004 China
| | - Yujia Zhu
- Department of Biochemistry Zhongshan School of Medicine Sun Yat‐Sen University Guangzhou Guangdong 510080 China
- Key Laboratory of Tropical Disease Control, Sun Yat‐Sen University, Ministry of Education Guangzhou Guangdong 510080 China
| | - Hongming Jiang
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Ge Zou
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Zhenming Zang
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Bo Wang
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
| | - Zhigang She
- School of Chemistry Sun Yat‐Sen University Guangzhou Guangdong 510275 China
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15
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Chen X, Hu C, Wang W, Zou Q, Li J, Lin Q, Zhu X, Jiang Y, Sun Y, Shen L, Wang L, Zou G, Lin X, Wang Y, Lin S, Li M, Ao R, Xu R, Lin H, Wang R. 909P A phase II study of the anti-programmed cell death-1 (PD-1) antibody penpulimab in patients with metastatic nasopharyngeal carcinoma (NPC) who had progressed after two or more lines of chemotherapy: Updated results. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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16
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Wang X, Liu Y, Han X, Zou G, Zhu W, Shen H, Liu H. Small molecule approaches to treat autoimmune and inflammatory diseases (Part II): Nucleic acid sensing antagonists and inhibitors. Bioorg Med Chem Lett 2021; 44:128101. [PMID: 33984476 DOI: 10.1016/j.bmcl.2021.128101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/05/2021] [Accepted: 05/05/2021] [Indexed: 02/06/2023]
Abstract
Nucleic acid sensing pathways play an important role in the innate immune system, protecting hosts against infections. However, a large body of evidence supports a close association between aberrant activation of those pathways and autoimmune and inflammatory diseases. Part II of the digest series on small molecule approaches to autoimmune and inflammatory diseases concentrates on recent advances with respect to small molecule antagonists or inhibitors of the nucleic acid sensing pathways, including endosomal TLRs, NLRP3 inflammasome and cGAS-STING.
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Affiliation(s)
- Xiaoqing Wang
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China
| | - Yafei Liu
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China
| | - Xingchun Han
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China
| | - Ge Zou
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China
| | - Wei Zhu
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China
| | - Hong Shen
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China
| | - Haixia Liu
- Department of Medicinal Chemistry, Roche Innovation Center Shanghai, Roche Pharma Research and Early Development, Shanghai 201203, China.
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17
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Yang YJ, Wei X, Zou G, Zhou FH, Sun LM. [Feasibility and safety of fetal intravascular transfusion via the intrahepatic vein in the treatment of fetal anemia]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:244-250. [PMID: 33902235 DOI: 10.3760/cma.j.cn112141-20201026-00798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the feasibility and safety of fetal intravascular transfusion via the intrahepatic vein in the treatment of fetal anemia. Methods: This was a retrospective analysis of all fetuses requiring intrauterine transfusion (IUT) in the Shanghai First Maternity and Infant Hospital between January 2010 and December 2019. According to the different ways of IUT, they were divided into intrahepatic venous transfusion group and umbilical venous transfusion group, fetal outcomes and the incidence of procedure-related complications between the two groups were compared. Results: A total of 97 IUTs were performed on 48 fetuses. Among them, 16 cases were performed in the intrahepatic vein (31 transfusions), 32 cases were performed in the cord of the umbilical vein (66 transfusions).There were no significant differences between the two groups in age, labor history and the proportion of fetal hydrops before the first transfusion. In the intrahepatic venous transfusion group, the posterior placenta was 14/16, which was significantly higher than 78% (25/32) in the umbilical venous transfusion group (P<0.01). The live-birth rates of the two groups were 13/16 and 75% (24/32). There was no significant difference between the two groups (P>0.05). Before intrahepatic venous transfusion, the proportion of fetal hydrops was significantly higher than that of umbilical venous transfusion [55% (17/31) vs 24% (16/66), P<0.05]. Puncture success rate of intrahepatic venous transfusion and umbilical venous transfusion were both 100%. In the umbilical venous transfasion group, the incidence of needle slippage (5%, 3/66) and the abnormality of fetal heart rate (11%, 7/66) were higher than those in the intrahepatic venous transfasion group [0 and 3% (1/31)], but there were no significant differences between the two groups (all P>0.05). There were no cases of fetal loss within 24 hours, premature rupture of membranes, infection within 7 days and emergency cesarean section after IUT in both groups. Conclusions: Fetal intravascular transfusion via the intrahepatic vein is safe and feasible in the treatment of fetal anemia. But the requirements of puncture technique are relatively high, so it is recommended to be carried out in experienced fetal treatment center.
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Affiliation(s)
- Y J Yang
- Fetal Medicine Unit and Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai 201204, China
| | - X Wei
- Fetal Medicine Unit and Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai 201204, China
| | - G Zou
- Fetal Medicine Unit and Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai 201204, China
| | - F H Zhou
- Fetal Medicine Unit and Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai 201204, China
| | - L M Sun
- Fetal Medicine Unit and Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai 201204, China
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18
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Tan MF, Zou G, Wei Y, Liu WQ, Li HQ, Hu Q, Zhang LS, Zhou R. Protein-protein interaction network and potential drug target candidates of Streptococcus suis. J Appl Microbiol 2021; 131:658-670. [PMID: 33249680 DOI: 10.1111/jam.14950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/15/2020] [Accepted: 11/25/2020] [Indexed: 02/06/2023]
Abstract
AIMS This study aimed to explore potential drug targets of Streptococcus suis at the system level. METHODS AND RESULTS A homologous protein mapping method was used in the construction of a protein-protein interaction (PPI) network of S. suis, which presented 1147 non-redundant interaction pairs among 286 proteins. The parameters of PPI networks were calculated and showed scale-free network properties. In all, 41 possibly essential proteins identified from 47 highly connected proteins were selected as potential drug target candidates. Of these proteins, 30 were already regarded as drug targets in other bacterial species. Six transporters with high connections to other functional proteins were identified as probably not essential but important functional proteins. Afterward, the subnetwork centred with cell division protein FtsZ was used in confirming the PPI network through bacterial two-hybrid analysis. CONCLUSIONS The predicted PPI network covers 13·04% of the proteome in S. suis. The selected 41 potential drug target candidates are conserved between S. suis and several model bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY The predictions included proteins known to be drug targets, and a verifying experiment confirmed the reliability of predicted interactions. This work is the first to present systematic computational PPI data for S. suis and provides potential drug targets, which are valuable in exploring novel anti-streptococcus drugs.
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Affiliation(s)
- M-F Tan
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China.,Institute of Animal Husbandry and Veterinary Medicine, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - G Zou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - Y Wei
- Institute of Animal Husbandry and Veterinary Medicine, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - W-Q Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - H-Q Li
- Institute of Animal Husbandry and Veterinary Medicine, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - Q Hu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - L-S Zhang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - R Zhou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China.,International Research Center for Animal Disease (Ministry of Science & Technology of China), Wuhan, China.,Cooperative Innovation Center of Sustainable Pig Production, Wuhan, China
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19
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Chen Y, Liu H, Zou G, Yang W, Zhang L, Yan Z, Long Y, She Z. Bioactive sesquiterpene derivatives from mangrove endophytic fungus Phomopsis sp. SYSU-QYP-23: Structures and nitric oxide inhibitory activities. Bioorg Chem 2020; 107:104530. [PMID: 33323272 DOI: 10.1016/j.bioorg.2020.104530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/30/2020] [Accepted: 11/30/2020] [Indexed: 11/17/2022]
Abstract
Eight new sesquiterpene derivatives (2, 4-6 and 10-13), along with five known analogues were isolated from the mangrove endophytic fungus Phomopsis sp. SYSU-QYP-23. Their structures of new compounds were established by spectroscopic methods, and the absolute configurations were confirmed by single-crystal X-ray diffraction analysis and comparison of the experimental ECD spectra. The absolute configuration of the side chain in 1 was first defined by modified Mosher's method. Compounds 1-7 showed potent inhibitory activities against nitric oxide (NO) production in lipopolysaccharides (LPS) induced RAW 264.7 cells with IC50 values ranging from 8.6 to 14.5 μM. The molecular docking results implied that the bioactive sesquiterpenes may directly bind with targeting residues in the active cavity of iNOS protein.
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Affiliation(s)
- Yan Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China; National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China
| | - Hongju Liu
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, PR China
| | - Ge Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Wencong Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Lishan Zhang
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, PR China
| | - Zhangyuan Yan
- School of Chemistry, South China Normal University, Guangzhou 510006, PR China
| | - Yuhua Long
- School of Chemistry, South China Normal University, Guangzhou 510006, PR China.
| | - Zhigang She
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China.
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20
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Luo X, Li JX, Liu YT, Zou G, Yao WX, Qing GQ, Yang RL, Ye XY, Facchini G, Rossetti S. Influence of lymph node dissection in patients undergoing radical nephrectomy for non-metastatic renal cell carcinoma: a systematic review and meta-analysis. Eur Rev Med Pharmacol Sci 2020; 23:6079-6090. [PMID: 31364109 DOI: 10.26355/eurrev_201907_18422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Whether lymph node dissection (LND) should be performed concomitantly with radical nephrectomy (RN) for non-metastatic renal carcinoma has still been controversial recently. We conducted a meta-analysis assessing oncologic outcomes of radical nephrectomy with lymph node dissection (LND) and without lymph node dissection (non-LND) in non-metastatic renal cell carcinoma (NMRCC). PATIENTS AND METHODS A systematic review was performed until April 2018 using a comprehensive search in PubMed, EMBASE, and Cochrane Library databases to identify eligible comparative studies. A formal meta-analysis was performed for studies comparing radical nephrectomy with LND and radical nephrectomy with non-LND for cT1-T4NxM0 tumors. Furthermore, a subgroup analysis for locally advanced renal cell carcinoma (cT3-T4NxM0) was conducted. RESULTS Thirteen studies on patients with LND and non- LND were identified and included in the analysis. LND group did not have a significantly better survival than non-LND group for cT1-T4NxM0 tumors (HR 0.93, 95% CI 0.78-1.11, p=0.45), However, in the subgroup of locally advanced renal cell carcinoma (cT3-T4NxM0), it showed a significantly better OS rate in patients who had undergone LND compared to those without LND (HR 0.73, 95% CI 0.60-0.90; p=0.003). CONCLUSIONS LND offers better cancer control and better long-term survival in locally advanced renal cell carcinomas (cT3-T4NxM0). This conclusion should be confirmed by a prospective randomized clinical trial.
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Affiliation(s)
- X Luo
- Department of Urology, Guangzhou Panyu Central Hospital, Guangzhou, China.
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21
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Zhang Y, Lin P, Zou JY, Zou G, Wang WZ, Liu YL, Zhao HW, Fang AP. MiR-216a-5p act as a tumor suppressor, regulating the cell proliferation and metastasis by targeting PAK2 in breast cancer. Eur Rev Med Pharmacol Sci 2020; 23:2469-2475. [PMID: 30964173 DOI: 10.26355/eurrev_201903_17394] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Our study aimed to investigate the expression of microRNA-216a-5p (miR-216a-5p) in breast cancer (BC) and its effect on the proliferation and metastasis of BC cells by regulating the expression of p21-activated protein kinase 2 (PAK2) gene. PATIENTS AND METHODS A total of 50 cases of cancer tissue specimens and corresponding para-carcinoma normal tissue specimens were collected from the breast surgery department of our hospital from July 2016 to December 2017. BC MCF-7 cell line and normal breast epithelial MCF-10A cells were cultured. MiR-NC (negative control), LV-p21-activated protein kinase 2 (PAK2) and/or miR-216a-5p mimics were synthesized and transfected. The protein and mRNA expression level in BC tissues and cells were detected by Western blot and quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) assay, respectively. Additionally, the Luciferase Reporter Assays, cell proliferation detection, clone formation assays and transwell migration and invasion assay were performed to determine the functional alteration of BC cells, respectively. RESULTS The results of qRT-PCR demonstrated that miR-216a-5p was decreased in both BC tissues and cells compared with that in normal controls. Online target gene prediction software and Dual-Luciferase reporter assay were used for target identification, and PAK2 was identified as a functional target of miR-216a-5p in BC cells. The results were further clarified with the Western blot (WB) experiment. In vitro, cell functions were detected by Cell Counting Kit-8 (CCK-8), crystal violet staining and transwell experiment, respectively. The results indicated that decreased expression of PAK2 resulting from the up-regulation of miR-216a-5p could restrain the proliferation, clone formation, invasion and migration abilities of BC cells. CONCLUSIONS We showed that miR-216a-5p played a role as antioncogene in BC, which provides a new therapeutic target for the treatment of BC.
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Affiliation(s)
- Y Zhang
- Department of General Surgery, Second Clinical Medical College of Jinan University (Shenzhen People's Hospital), Shenzhen, China.
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Wu F, Wang L, Ji Y, Zou G, Shen H, Nicewicz DA, Chen J, Huang Y. Direct Synthesis of Bicyclic Acetals via Visible Light Catalysis. iScience 2020; 23:101395. [PMID: 32759056 PMCID: PMC7404572 DOI: 10.1016/j.isci.2020.101395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/26/2020] [Accepted: 07/17/2020] [Indexed: 11/28/2022] Open
Abstract
Polysubstituted bicyclic acetals are a class of privileged pharmacophores with a unique 3D structure and an adjacent pair of hydrogen bond acceptors. The key, fused acetal functionality is often assembled, via intramolecular cyclization, from linear substrates that are not readily available. Herein, we report a formal cycloaddition between cinnamyl alcohols and cyclic enol ethers under ambient photoredox catalysis conditions. Polysubstituted bicyclic acetals can be prepared in one step from readily available building blocks. Employment of sugar-derived enol ethers allows easy access to a library of scaffolds with intriguing conformation and medicinal chemistry potential. Synergistic catalysis of photocatalyst and HAT reagent 5/5, 5/6, 5/7, 6/6 bicyclic acetals and polysubstituted THF formed in one step High stability of bicyclic acetal in SIF and SGF
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Affiliation(s)
- Fengjin Wu
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Leifeng Wang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Ying Ji
- Roche R&D Center (China) Ltd, 720 Cai Lun Road, Building 5, Shanghai 201203, China
| | - Ge Zou
- Roche R&D Center (China) Ltd, 720 Cai Lun Road, Building 5, Shanghai 201203, China
| | - Hong Shen
- Roche R&D Center (China) Ltd, 720 Cai Lun Road, Building 5, Shanghai 201203, China
| | - David A Nicewicz
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA.
| | - Jiean Chen
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518055, China.
| | - Yong Huang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518055, China.
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Yang W, Chen Y, Cai R, Zou G, Wang B, She Z. Benzopyran Derivatives and an Aliphatic Compound from a Mangrove Endophytic Fungus Penicillium citrinum QJF-22. Chem Biodivers 2020; 17:e2000192. [PMID: 32267070 DOI: 10.1002/cbdv.202000192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 04/07/2020] [Indexed: 12/18/2022]
Abstract
Two new benzopyran derivatives, (2R,4S)-5-methoxy-2-methyl-3,4-dihydro-2H-1-benzopyran-4-ol and (2S,4R,2'S,4'R)-4,4'-oxybis(5-methoxy-2-methyl-3,4-dihydro-2H-1-benzopyran), and a new aliphatic compound, (3E,5Z,8S,10E)-8-hydroxytrideca-3,5,10,12-tetraen-2-one, together with three known benzopyran derivatives, were obtained from a mangrove endophytic fungus Penicillium citrinum QJF-22 collected in Hainan island. Their structures were determined by analysis of spectroscopic data and the relative configuration of (2R,4S)-5-methoxy-2-methyl-3,4-dihydro-2H-1-benzopyran-4-ol was also confirmed by single-crystal X-ray diffraction. The absolute configurations of four compounds were established by comparison of ECD spectra to calculations. The configuration of (3E,5Z,8S,10E)-8-hydroxytrideca-3,5,10,12-tetraen-2-one was confirmed by comparison of optical value to the similar compound. The configurations of the compounds (2S,4S)-5-methoxy-2-methyl-3,4-dihydro-2H-1-benzopyran-4-ol and (2R,4R)-5-methoxy-2-methyl-3,4-dihydro-2H-1-benzopyran-4-ol were first determined. (3R,4S)-3,4,8-Trihydroxy-3,4-dihydronaphthalen-1(2H)-one exhibited moderate inhibitory effects on LPS-induced NO production in RAW264.7 cells with IC50 of 44.7 μM, and without cytotoxicity to RAW264.7 cells within 50 μM.
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Affiliation(s)
- Wencong Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Yan Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.,School of Marine Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Runlin Cai
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Ge Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Bo Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Zhigang She
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.,Southern Marine Science and Engineering Guangdong Laboratory, Sun Yat-Sen University, Zhuhai, 519082, P. R. China
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Chen Y, Zhang L, Zou G, Li C, Yang W, Liu H, She Z. Anti-inflammatory activities of alkaloids from the mangrove endophytic fungus Phomopsis sp. SYSUQYP-23. Bioorg Chem 2020; 97:103712. [DOI: 10.1016/j.bioorg.2020.103712] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 01/01/2023]
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25
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Chen Y, Yang W, Zou G, Chen S, Pang J, She Z. Bioactive polyketides from the mangrove endophytic fungi Phoma sp. SYSU-SK-7. Fitoterapia 2019; 139:104369. [PMID: 31626911 DOI: 10.1016/j.fitote.2019.104369] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/04/2019] [Accepted: 10/04/2019] [Indexed: 10/25/2022]
Abstract
Five new polyketides, colletotric B (2), 3-hydroxy-5-methoxy-2,4,6-trimethylbenzoic acid (3), colletotric C (4), chaetochromone D (6) and 8-hydroxy-pregaliellalactone B (9), together with four known analogues (1, 5 and 7-8) were isolated from the mangrove endophytic fungus Phoma sp. SYSU-SK-7. Their structures were elucidated by analysis of extensive spectroscopic data and mass spectrometric data. Compounds 1-2 showed strong antimicrobial activity against the P. aeruginosa, MRSA and C. albicans with the MIC values in the range of 1.67-6.28 μg/ml. Furthermore, Compounds 1-5 also exhibited significant α-glucosidase inhibitory activity with the IC50 values in the range of 36.2-90.6 μM. Compound 7 was found to inhibited radical scavenging activity against DPPH with the EC50 value of 11.8 μM.
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Affiliation(s)
- Yan Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China; School of Marin Sciences, Sun Yat-sen University, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou 510006, China
| | - Wencong Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Ge Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Shenyu Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Jiyan Pang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Zhigang She
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China; School of Marin Sciences, Sun Yat-sen University, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou 510006, China.
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26
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Zou G, Bai J, Li D, Chen Y. Effect of metformin on the proliferation, apoptosis, invasion and autophagy of ovarian cancer cells. Exp Ther Med 2019; 18:2086-2094. [PMID: 31452705 PMCID: PMC6704536 DOI: 10.3892/etm.2019.7803] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 04/26/2019] [Indexed: 12/20/2022] Open
Abstract
The present study evaluated the effect of metformin on the SKOV3 ovarian cancer cell line and investigated the underlying mechanism. The inhibitory rate of SKOV3 cells was analyzed by MTT assay. SKOV3 cell apoptosis rate was quantitatively measured using flow cytometry. The effect of metformin on intracellular autophagosomes was observed using electron microscopy. The migration and invasion capabilities of SKOV3 cells were assessed by cell scratch test and Transwell assay. Results demonstrated that. the proliferation rate of SKOV3 cells was significantly inhibited in a time- and concentration-dependent manner following treatment with different concentrations of metformin for 24, 48 and 72 h. The number of migratory cells significantly decreased with increasing concentrations of metformin. The administration of metformin also promoted autophagy of ovarian cancer The expression level of microtubule associated protein 1 light chain 3-α protein was markedly upregulated. The mRNA expression level of metastasis-associated 1 (MTA1) was significantly downregulated following metformin treatment. In conclusion, metformin intervention suppressed SKOV3 proliferation and induced apoptosis in a concentration-dependent manner. Metformin also inhibited the invasion and migration of SKOV3 cells. It was hypothesized that the underlying mechanism of metformin's effect may involve MTA1 downregulation.
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Affiliation(s)
- Ge Zou
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Jie Bai
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Dandan Li
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Yan Chen
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
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27
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Yang C, Zhao N, Li D, Zou G, Chen Y. Metformin improves the sensitivity of ovarian cancer cells to chemotherapeutic agents. Oncol Lett 2019; 18:2404-2411. [PMID: 31402943 PMCID: PMC6676676 DOI: 10.3892/ol.2019.10564] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 06/11/2019] [Indexed: 01/22/2023] Open
Abstract
Ovarian cancer is a common tumor of the reproductive system, and primarily responds to cytoreductive surgery and cisplatin (DDP)-based chemotherapy. However, chemoresistance results in high ovarian cancer mortality. Therefore, the aim of the present study was to investigate the effects of metformin on the apoptosis and autophagy of ovarian cancer drug-resistant SKOV3/DDP cells. To do so, MTT assay, flow cytometry, electron microscopy and western blotting were used in the present study. Metformin could inhibit the growth of SKOV3 and SKOV3/DDP cells in a concentration- and time-dependent manner (P<0.05). The half-inhibitory concentration (IC50) values of DDP and methotrexate (MTX) were 14.35 and 4.21 µg/ml for SKOV3 cells, and 70.26 and 15.27 µg/ml for SKOV3/DDP cells, respectively. In addition, the resistance index of SKOV3/DDP for DDP and MTX was 4.89 and 3.62, respectively. After combining metformin with DDP and MTX, the IC50 values for SKOV3 cells were 11.20 and 2.80 µg/ml, and 6.21 and 2.74 µg/ml for SKOV3/DDP cells, respectively. Metformin decreased the IC50 of DDP and MTX in drug-resistant cancer cells SKOV3/DDP by 11.31- and 6.18-fold. This indicated that cell proliferation was inhibited when treated with the combination of metformin and chemotherapeutic agents, compared with chemotherapeutic agents alone. In addition, autophagy was not observed in SKOV3 and SKOV3/DDP cells; however, it was observed in SKOV3/DDP cells following incubation with 10 mmol/l metformin for 48 h. Furthermore, the expression levels of microtubule-associated protein 1 light chain 3-II protein in SKOV3/DDP cells were upregulated compared with in SKOV3 cells (P<0.05). These results demonstrated that metformin can sensitize drug-resistant ovarian cancer cells to chemotherapeutic agents, and that it may be associated with the induction of autophagy.
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Affiliation(s)
- Chen Yang
- School of Medicine, Tsinghua University, Beijing 100084, P.R. China
| | - Nanan Zhao
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Dandan Li
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Ge Zou
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
| | - Yan Chen
- Department of Obstetrics and Gynecology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China
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28
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Lai W, Qin SY, Zou G, Liao XJ, Chen GD, Zhang H, Zhao BX, Xu SH. Sinulaspirolactam A, a novel aza-spirocyclic valerenane sesquiterpenoid from soft coral Sinularia sp. J Asian Nat Prod Res 2019; 21:494-501. [PMID: 29595069 DOI: 10.1080/10286020.2018.1450393] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
A novel valerenane sesquiterpenoid sinulaspirolactam A (1), together with five known compounds, was isolated from the soft coral Sinularia sp. Their structures were determined by spectroscopic analyses. The absolute configuration of 1 was established by ECD calculation. Compound 1 was the first example of valerenane sesquiterpenoid bearing an aza-spiro[4.5] ring moiety, the plausible biogenetic pathway of which was proposed. Cytotoxic activities of these compounds were also evaluated.
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Affiliation(s)
- Wei Lai
- a Department of Chemistry, College of Chemistry and Materials Science , Jinan University , Guangzhou 510632 , China
| | - Sheng-Ying Qin
- b Clinical Experimental Center , First Affiliated Hospital of Jinan University , Guangzhou 510632 , China
| | - Ge Zou
- a Department of Chemistry, College of Chemistry and Materials Science , Jinan University , Guangzhou 510632 , China
| | - Xiao-Jian Liao
- a Department of Chemistry, College of Chemistry and Materials Science , Jinan University , Guangzhou 510632 , China
| | - Guo-Dong Chen
- c College of Pharmacy , Jinan University , Guangzhou , 510632 , China
| | - Hua Zhang
- a Department of Chemistry, College of Chemistry and Materials Science , Jinan University , Guangzhou 510632 , China
| | - Bing-Xin Zhao
- a Department of Chemistry, College of Chemistry and Materials Science , Jinan University , Guangzhou 510632 , China
| | - Shi-Hai Xu
- a Department of Chemistry, College of Chemistry and Materials Science , Jinan University , Guangzhou 510632 , China
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29
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Silveira CRA, MacKinley J, Coleman K, Li Z, Finger E, Bartha R, Morrow SA, Wells J, Borrie M, Tirona RG, Rupar CA, Zou G, Hegele RA, Mahuran D, MacDonald P, Jenkins ME, Jog M, Pasternak SH. Ambroxol as a novel disease-modifying treatment for Parkinson's disease dementia: protocol for a single-centre, randomized, double-blind, placebo-controlled trial. BMC Neurol 2019; 19:20. [PMID: 30738426 PMCID: PMC6368728 DOI: 10.1186/s12883-019-1252-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 02/01/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Currently there are no disease-modifying treatments for Parkinson's disease dementia (PDD), a condition linked to aggregation of the protein α-synuclein in subcortical and cortical brain areas. One of the leading genetic risk factors for Parkinson's disease is being a carrier in the gene for β-Glucocerebrosidase (GCase; gene name GBA1). Studies in cell culture and animal models have shown that raising the levels of GCase can decrease levels of α-synuclein. Ambroxol is a pharmacological chaperone for GCase and is able to raise the levels of GCase and could therefore be a disease-modifying treatment for PDD. The aims of this trial are to determine if Ambroxol is safe and well-tolerated by individuals with PDD and if Ambroxol affects cognitive, biochemical, and neuroimaging measures. METHODS This is a phase II, single-centre, double-blind, randomized placebo-controlled trial involving 75 individuals with mild to moderate PDD. Participants will be randomized into Ambroxol high-dose (1050 mg/day), low-dose (525 mg/day), or placebo treatment arms. Assessments will be undertaken at baseline, 6-months, and 12-months follow up times. Primary outcome measures will be the Alzheimer's disease Assessment Scale-cognitive subscale (ADAS-Cog) and the ADCS Clinician's Global Impression of Change (CGIC). Secondary measures will include the Parkinson's disease Cognitive Rating Scale, Clinical Dementia Rating, Trail Making Test, Stroop Test, Unified Parkinson's disease Rating Scale, Purdue Pegboard, Timed Up and Go, and gait kinematics. Markers of neurodegeneration will include MRI and CSF measures. Pharmacokinetics and pharmacodynamics of Ambroxol will be examined through plasma levels during dose titration phase and evaluation of GCase activity in lymphocytes. DISCUSSION If found effective and safe, Ambroxol will be one of the first disease-modifying treatments for PDD. TRIAL REGISTRATION ClinicalTrials.gov NCT02914366, 26 Sep 2016/retrospectively registered.
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Affiliation(s)
- C R A Silveira
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada.,Lawson Health Research Institute, London, Ontario, Canada
| | - J MacKinley
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada.,Lawson Health Research Institute, London, Ontario, Canada
| | - K Coleman
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada.,Lawson Health Research Institute, London, Ontario, Canada
| | - Z Li
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada.,Lawson Health Research Institute, London, Ontario, Canada
| | - E Finger
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada.,Lawson Health Research Institute, London, Ontario, Canada.,Deparment of Clinical Neurological Science, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - R Bartha
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada
| | - S A Morrow
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada.,Lawson Health Research Institute, London, Ontario, Canada.,Deparment of Clinical Neurological Science, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - J Wells
- Lawson Health Research Institute, London, Ontario, Canada.,Division of Geriatric Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - M Borrie
- Lawson Health Research Institute, London, Ontario, Canada.,Division of Geriatric Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - R G Tirona
- Lawson Health Research Institute, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - C A Rupar
- Lawson Health Research Institute, London, Ontario, Canada.,Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - G Zou
- Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada
| | - R A Hegele
- Lawson Health Research Institute, London, Ontario, Canada.,Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada
| | - D Mahuran
- Laboratory of Medicine and Pathobiology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - P MacDonald
- Deparment of Clinical Neurological Science, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - M E Jenkins
- Lawson Health Research Institute, London, Ontario, Canada.,Deparment of Clinical Neurological Science, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - M Jog
- Lawson Health Research Institute, London, Ontario, Canada.,Deparment of Clinical Neurological Science, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - S H Pasternak
- Cognitive Neurology and Alzheimer's Disease Research Centre, Parkwood Institute - Main Building, Room A230, 550, Wellington Road, London, Ontario, N6G 0A7, Canada. .,Lawson Health Research Institute, London, Ontario, Canada. .,Deparment of Clinical Neurological Science, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada. .,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada. .,Robarts Research Institute, Western University, London, Ontario, Canada.
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30
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Luo X, Yang X, Li J, Zou G, Lin Y, Qing G, Yang R, Yao W, Ye X. The procalcitonin/albumin ratio as an early diagnostic predictor in discriminating urosepsis from patients with febrile urinary tract infection. Medicine (Baltimore) 2018; 97:e11078. [PMID: 29995751 PMCID: PMC6076169 DOI: 10.1097/md.0000000000011078] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Discrimination between urosepsis and febrile urinary tract infections is important in therapeutic decision-making to indicate suitable treatments to avoid sepsis-related organ failure. Accurate diagnosis is time-consuming and susceptible to false-positive results. Moreover, patient responses to urosepsis are complex and varied. Therefore, this study aimed to develop a new, early diagnostic predictor that could discriminate between patients with urosepsis and those with febrile urinary tract infections using a combination of initial procalcitonin and albumin levels.We conducted a retrospective study involving 140 patients with febrile urinary tract infections from January 2013 to December 2017. Univariate and multivariate logistic analyses were performed to identify the independent risk factors for differentiating urosepsis from febrile urinary tract infection. A receiver operating characteristic (ROC) curve analysis was conducted to compare the predictive accuracy of the procalcitonin/albumin ratio.Patients in the urosepsis group had higher procalcitonin/albumin ratios compared to those in the febrile urinary tract infection group [2.254 (0.978, 6.299) vs 0.021 (0.004, 0.095); P < .001]. Based on multivariate logistic analysis, the procalcitonin/albumin ratio [adjusted odds ratio (OR) 1.029, 95% confidence interval (CI) 1.013-1.045, P < .001] was an independent predictor of urosepsis, which allowed for differentiation from patients with febrile urinary tract infections. The area under the ROC curve (AUC) for the procalcitonin/albumin ratio was 0.937 (95% CI, 0.894-0.980); P < .001. The sensitivity and specificity of the procalcitonin/albumin ratio cut-off values (>0.44) were 84.62% and 96.00%, respectively. Moreover, in the subset of 65 patients with urosepsis, the procalcitonin/albumin ratio in the uroseptic shock group was higher than in the group of patients without uroseptic shock [5.46 (1.43, 6.58) vs 1.24 (0.63, 4.38); P = .009].Our study demonstrates that the procalcitonin/albumin ratio is an early diagnostic predictor that can discriminate between urosepsis and febrile urinary tract infection. Additionally, in patients with urosepsis, those with higher procalcitonin/albumin ratios were more prone to uroseptic shock. Our findings suggest that the procalcitonin/albumin ratio is a rapid and relatively low-cost biomarker that can be used in clinical practice.
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Affiliation(s)
| | - Xiang Yang
- Department of Gynecology, Panyu Central Hospital, Guangzhou, China
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31
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Dang Y, Zou G, Ling L. 6.3-O2Health status and predictors among workers in small and medium-sized enterprises in Guangdong, China: a cross-sectional mixed study. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y Dang
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Centre for Migrant Health Policy (CMHP), China
| | - G Zou
- Institute for International Health and Development, Queen Margaret University, United Kingdom
| | - L Ling
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Centre for Migrant Health Policy (CMHP), China
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32
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Dang Y, Zou G, Ling L. 7.5-O8Migration pattern and health service seeking behaviour among workers in small and medium-sized enterprises in Guangdong, China: a cross-sectional survey. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y Dang
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, China
| | - G Zou
- Institute for International Health and Development, Queen Margaret University, United Kingdom
| | - L Ling
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, China
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33
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Chai W, Zou G, Shi J, Chen W, Gong X, Wei X, Ling L. 7.4-O6Evaluation of the effectiveness of a WHO-5A’s model based comprehensive tobacco control program among migrant workers in Guangdong, China: a pilot study. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Chai
- Sun Yat-sen University, China
| | - G Zou
- Sun Yat-sen University, China
| | - J Shi
- Sun Yat-sen University, China
| | - W Chen
- Sun Yat-sen University, China
| | - X Gong
- Sun Yat-sen University, China
| | - X Wei
- University of Toronto, Canada
| | - L Ling
- Sun Yat-sen University, China
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34
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Warners MJ, Ambarus CA, Bredenoord AJ, Verheij J, Lauwers GY, Walsh JC, Katzka DA, Nelson S, van Viegen T, Furuta GT, Gupta SK, Stitt L, Zou G, Parker CE, Shackelton LM, D Haens GR, Sandborn WJ, Dellon ES, Feagan BG, Collins MH, Jairath V, Pai RK. Reliability of histologic assessment in patients with eosinophilic oesophagitis. Aliment Pharmacol Ther 2018; 47:940-950. [PMID: 29460418 DOI: 10.1111/apt.14559] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 01/21/2018] [Accepted: 01/21/2018] [Indexed: 01/13/2023]
Abstract
BACKGROUND The validity of the eosinophilic oesophagitis (EoE) histologic scoring system (EoEHSS) has been demonstrated, but only preliminary reliability data exist. AIM Formally assess the reliability of the EoEHSS and additional histologic features. METHODS Four expert gastrointestinal pathologists independently reviewed slides from adult patients with EoE (N = 45) twice, in random order, using standardised training materials and scoring conventions for the EoEHSS and additional histologic features agreed upon during a modified Delphi process. Intra- and inter-rater reliability for scoring the EoEHSS, a visual analogue scale (VAS) of overall histopathologic disease severity, and additional histologic features were assessed using intra-class correlation coefficients (ICCs). RESULTS Almost perfect intra-rater reliability was observed for the composite EoEHSS scores and the VAS. Inter-rater reliability was also almost perfect for the composite EoEHSS scores and substantial for the VAS. Of the EoEHSS items, eosinophilic inflammation was associated with the highest ICC estimates and consistent with almost perfect intra- and inter-rater reliability. With the exception of dyskeratotic epithelial cells and surface epithelial alteration, ICC estimates for the remaining EoEHSS items were above the benchmarks for substantial intra-rater, and moderate inter-rater reliability. Estimation of peak eosinophil count and number of lamina propria eosinophils were associated with the highest ICC estimates among the exploratory items. CONCLUSION The composite EoEHSS and most component items are associated with substantial reliability when assessed by central pathologists. Future studies should assess responsiveness of the score to change after a therapeutic intervention to facilitate its use in clinical trials.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - G R D Haens
- Amsterdam, The Netherlands.,London, ON, Canada
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35
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Zou G, Liao XJ, Peng Q, Chen GD, Wei FY, Xu ZX, Zhao BX, Xu SH. A new α-pyrone from the deep-sea actinomycete Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111(T). J Asian Nat Prod Res 2017; 19:1232-1238. [PMID: 28349726 DOI: 10.1080/10286020.2017.1307186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/13/2017] [Indexed: 06/06/2023]
Abstract
A new α-pyrone, nocapyrone S (1), together with five known compounds (2-6), were isolated from the deep-sea actinomycete Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111(T). Their structures were determined by spectroscopic analyses. The absolute configuration of 1 was established by quantum approaches. Cytotoxic activity of 1 was evaluated against K562, MCF-7, SGC7901, A375, Hela, and HepG2 cell lines.
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Affiliation(s)
- Ge Zou
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
- b College of Pharmacy, Jinan University , Guangzhou 510632 , China
| | - Xiao-Jian Liao
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Qi Peng
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Guo-Dong Chen
- b College of Pharmacy, Jinan University , Guangzhou 510632 , China
| | - Fang-Ying Wei
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Zheng-Xiong Xu
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Bing-Xin Zhao
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Shi-Hai Xu
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
- b College of Pharmacy, Jinan University , Guangzhou 510632 , China
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36
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D'Haens GR, Sandborn WJ, Zou G, Stitt LW, Rutgeerts PJ, Gilgen D, Jairath V, Hindryckx P, Shackelton LM, Vandervoort MK, Parker CE, Muller C, Pai RK, Levchenko O, Marakhouski Y, Horynski M, Mikhailova E, Kharchenko N, Pimanov S, Feagan BG. Randomised non-inferiority trial: 1600 mg versus 400 mg tablets of mesalazine for the treatment of mild-to-moderate ulcerative colitis. Aliment Pharmacol Ther 2017; 46:292-302. [PMID: 28568974 DOI: 10.1111/apt.14164] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/16/2017] [Accepted: 05/04/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND High concentration mesalazine formulations are more convenient than conventional low concentration formulations for the treatment of ulcerative colitis (UC). AIM To compare the efficacy and safety of 1600 mg and 400 mg tablet mesalazine formulations. METHODS Patients with mild-to-moderate active UC (Mayo Clinic Score >5; N=817) were randomised to 3.2 g of oral mesalazine, administered as two 1600 mg tablets once, or four 400 mg tablets twice daily. We hypothesised that treatment with the 1600 mg tablet was non-inferior (within a 10% margin) to the 400 mg tablet for induction of clinical and endoscopic remission at week 8. Open-label treatment with the 1600 mg tablet continued for 26-30 weeks based on induction response. Predictors of treatment response were also explored. RESULTS At week 8, remission occurred in 22.4% and 24.6% of patients receiving the 1600 mg and 400 mg tablets, respectively (absolute difference -2.2%, 95% CI: -8.1% to 3.8%, non-inferiority P=.005). Endoscopic and histopathologic disease activity, leucocyte concentration and age were significantly associated with clinical remission (P=.022, .042, .014 and .023, respectively). At week 38, 43.9% (296/675) of patients who continued treatment with the 1600 mg formulation were in remission, including 70.3% (142/202) of patients who received a reduced dose of mesalazine (1.6 g/d). The overall incidence of serious adverse events was low. CONCLUSIONS Induction therapy with 3.2 mg mesalazine using two 1600 mg tablets once-daily was statistically and clinically non-inferior to a twice-daily regimen using four 400 mg tablets (NCT01903252).
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Affiliation(s)
- G R D'Haens
- Amsterdam, The Netherlands.,London, ON, Canada
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Jairath V, Zou G, Parker CE, MacDonald JK, Mosli MH, AlAmeel T, Al Beshir M, AlMadi M, Al-Taweel T, Atkinson NSS, Biswas S, Chapman TP, Dulai PS, Glaire MA, Hoekman D, Kherad O, Koutsoumpas A, Minas E, Restellini S, Samaan MA, Khanna R, Levesque BG, D'Haens G, Sandborn WJ, Feagan BG. Systematic review with meta-analysis: placebo rates in induction and maintenance trials of Crohn's disease. Aliment Pharmacol Ther 2017; 45:1021-1042. [PMID: 28164348 DOI: 10.1111/apt.13973] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 07/08/2016] [Accepted: 01/16/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Minimising placebo response is essential for drug development. AIM To conduct a meta-analysis to determine placebo response and remission rates in trials and identify the factors affecting these rates. METHODS MEDLINE, EMBASE and CENTRAL were searched from inception to April 2014 for placebo-controlled trials of pharmacological interventions for Crohn's disease. Placebo response and remission rates for induction and maintenance trials were pooled by random-effects and mixed-effects meta-regression models to evaluate effects of study-level characteristics on these rates. RESULTS In 100 studies containing 67 induction and 40 maintenance phases and 7638 participants, pooled placebo remission and response rates for induction trials were 18% [95% confidence interval (CI) 16-21%] and 28% (95% CI 24-32%), respectively. Corresponding values for maintenance trials were 32% (95% CI 25-39%) and 26% (95% CI 19-35%), respectively. For remission, trials enrolling patients with more severe disease activity, longer disease duration and more study centres were associated with lower placebo rates, whereas more study visits and longer study duration was associated with higher placebo rates. For response, findings were opposite such that trials enrolling patients with less severe disease activity and longer study duration were associated with lower placebo rates. Placebo rates varied by drug class and route of administration, with the highest placebo response rates observed for biologics. CONCLUSIONS Placebo rates vary according to whether trials are designed for induction or maintenance and the factors influencing them differ for the endpoints of remission and response. These findings have important implications for clinical trial design in Crohn's disease.
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Affiliation(s)
| | | | | | | | - M H Mosli
- London, ON, Canada.,Jeddah, Saudi Arabia
| | | | | | | | | | | | | | | | - P S Dulai
- London, ON, Canada.,La Jolla, CA, USA
| | | | | | | | | | | | | | | | | | | | - G D'Haens
- London, ON, Canada.,Amsterdam, The Netherlands
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Campbell D, Gorey KM, Luginaah IN, Zou G, Hamm C, Holowaty EJ. Gender differences on the interacting effects of marital status and health insurance on long-term colon cancer survival in California, 1995-2014. Public Health 2016; 140:258-260. [PMID: 27506641 PMCID: PMC5118043 DOI: 10.1016/j.puhe.2016.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 07/12/2016] [Indexed: 10/21/2022]
Abstract
Objectives Long-term colon cancer survival is not well explained by main effects. We explored the interaction of age, gender, marital status, health insurance and poverty on 10-year colon cancer survival. Methods California registry data were analyzed for 5,776 people diagnosed from 1995 to 2000; followed until 2014. Census data classified neighborhood poverty. We tested interactions with regressions and described them with standardized rates and rate ratios (RR). Results The 5-way interaction was significant, suggesting larger 4-way disadvantages among non-Medicare-eligible people. A significant 4-way interaction was a 3-way interaction in non-high poverty neighborhoods only. Private insurance was protective for unmarried men (RR = 1.60) but not women, while it was protective for married women (RR = 1.22) but not men. This pattern seemed explained by lower-incomes of certain groups of unmarried women and married men and more prevalent underinsuring of unmarried men. Conclusions Structural inequities related to the institutions of marriage and health care seem to affect women and men quite differently. Policy makers ought to be cognizant of such structural imbalances as future reforms of American health care are considered.
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Affiliation(s)
- D Campbell
- School of Social Work, University of Windsor, Windsor, Ontario, Canada
| | - K M Gorey
- School of Social Work, University of Windsor, 167 Ferry Street, Windsor, Ontario N9A 0C5, Canada.
| | - I N Luginaah
- Department of Geography, Western University, London, Ontario, Canada
| | - G Zou
- Department of Epidemiology and Biostatistics and Robarts Research Institute, Western University, London, Ontario, Canada
| | - C Hamm
- Windsor Regional Cancer Center and Department of Oncology, Division of Medical Oncology, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - E J Holowaty
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
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Yan Q, Jiang H, Wang B, Sui W, Zhou H, Zou G. Expression and Significance of RANTES and MCP-1 in Renal Tissue With Chronic Renal Allograft Dysfunction. Transplant Proc 2016; 48:2034-9. [DOI: 10.1016/j.transproceed.2016.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 05/04/2016] [Indexed: 12/01/2022]
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40
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Bailly B, Richard CA, Sharma G, Wang L, Johansen L, Cao J, Pendharkar V, Sharma DC, Galloux M, Wang Y, Cui R, Zou G, Guillon P, von Itzstein M, Eléouët JF, Altmeyer R. Targeting human respiratory syncytial virus transcription anti-termination factor M2-1 to inhibit in vivo viral replication. Sci Rep 2016; 6:25806. [PMID: 27194388 PMCID: PMC4872165 DOI: 10.1038/srep25806] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 04/22/2016] [Indexed: 01/05/2023] Open
Abstract
Human respiratory syncytial virus (hRSV) is a leading cause of acute lower respiratory tract infection in infants, elderly and immunocompromised individuals. To date, no specific antiviral drug is available to treat or prevent this disease. Here, we report that the Smoothened receptor (Smo) antagonist cyclopamine acts as a potent and selective inhibitor of in vitro and in vivo hRSV replication. Cyclopamine inhibits hRSV through a novel, Smo-independent mechanism. It specifically impairs the function of the hRSV RNA-dependent RNA polymerase complex notably by reducing expression levels of the viral anti-termination factor M2-1. The relevance of these findings is corroborated by the demonstration that a single R151K mutation in M2-1 is sufficient to confer virus resistance to cyclopamine in vitro and that cyclopamine is able to reduce virus titers in a mouse model of hRSV infection. The results of our study open a novel avenue for the development of future therapies against hRSV infection.
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Affiliation(s)
- B Bailly
- Institut Pasteur of Shanghai - Chinese Academy of Sciences, Unit of anti-infective research, Shanghai, 200031, P.R. China.,Institute for Glycomics, Griffith University, Gold Coast Campus, Gold Coast, QLD 4222, Australia.,Shandong University-Helmholtz Institute of Biotechnology, Qingdao, 266101, P.R. China
| | - C-A Richard
- INRA, Unité de Virologie et Immunologie Moléculaires (UR892), Jouy-en-Josas, 78352, France
| | - G Sharma
- CombinatoRx-Singapore, 138667, Singapore
| | - L Wang
- Institut Pasteur of Shanghai - Chinese Academy of Sciences, Unit of anti-infective research, Shanghai, 200031, P.R. China
| | | | - J Cao
- Shandong University-Helmholtz Institute of Biotechnology, Qingdao, 266101, P.R. China.,Qingdao Municipal Center for Disease Control &Prevention, Qingdao, 266033, P.R. China
| | | | - D-C Sharma
- CombinatoRx-Singapore, 138667, Singapore
| | - M Galloux
- INRA, Unité de Virologie et Immunologie Moléculaires (UR892), Jouy-en-Josas, 78352, France
| | - Y Wang
- Institut Pasteur of Shanghai - Chinese Academy of Sciences, Unit of anti-infective research, Shanghai, 200031, P.R. China
| | - R Cui
- Institut Pasteur of Shanghai - Chinese Academy of Sciences, Unit of anti-infective research, Shanghai, 200031, P.R. China
| | - G Zou
- Institut Pasteur of Shanghai - Chinese Academy of Sciences, Unit of anti-infective research, Shanghai, 200031, P.R. China
| | - P Guillon
- Institute for Glycomics, Griffith University, Gold Coast Campus, Gold Coast, QLD 4222, Australia
| | - M von Itzstein
- Institute for Glycomics, Griffith University, Gold Coast Campus, Gold Coast, QLD 4222, Australia
| | - J-F Eléouët
- INRA, Unité de Virologie et Immunologie Moléculaires (UR892), Jouy-en-Josas, 78352, France
| | - R Altmeyer
- Institut Pasteur of Shanghai - Chinese Academy of Sciences, Unit of anti-infective research, Shanghai, 200031, P.R. China.,Institute for Glycomics, Griffith University, Gold Coast Campus, Gold Coast, QLD 4222, Australia.,Shandong University-Helmholtz Institute of Biotechnology, Qingdao, 266101, P.R. China.,CombinatoRx-Singapore, 138667, Singapore.,CombinatoRx, Cambridge, MA 02142, USA.,Qingdao Municipal Center for Disease Control &Prevention, Qingdao, 266033, P.R. China
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Pelish HE, Liau BB, Nitulescu II, Tangpeerachaikul A, Poss ZC, Da Silva DH, Caruso BT, Arefolov A, Fadeyi O, Christie AL, Du K, Banka D, Schneider EV, Jestel A, Zou G, Si C, Ebmeier CC, Bronson RT, Krivtsov AV, Myers AG, Kohl NE, Kung AL, Armstrong SA, Lemieux ME, Taatjes DJ, Shair MD. Mediator kinase inhibition further activates super-enhancer-associated genes in AML. Nature 2015; 526:273-276. [PMID: 26416749 PMCID: PMC4641525 DOI: 10.1038/nature14904] [Citation(s) in RCA: 266] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 07/14/2015] [Indexed: 12/11/2022]
Abstract
Super-enhancers (SEs), which are composed of large clusters of enhancers densely loaded with the Mediator complex, transcription factors (TFs), and chromatin regulators, drive high expression of genes implicated in cell identity and disease, such as lineage-controlling TFs and oncogenes 1, 2. BRD4 and CDK7 are positive regulators of SE-mediated transcription3,4,5. In contrast, negative regulators of SE-associated genes have not been well described. Here we report that Mediator-associated kinases cyclin-dependent kinase 8 (CDK8) and CDK19 restrain increased activation of key SE-associated genes in acute myeloid leukaemia (AML) cells. We determined that the natural product cortistatin A (CA) selectively inhibited Mediator kinases, had antileukaemic activity in vitro and in vivo, and disproportionately induced upregulation of SE-associated genes in CA-sensitive AML cell lines but not in CA-insensitive cell lines. In AML cells, CA upregulated SE-associated genes with tumour suppressor and lineage-controlling functions, including the TFs CEBPA, IRF8, IRF1 and ETV66, 7, 8. The BRD4 inhibitor I-BET151 downregulated these SE-associated genes, yet also has antileukaemic activity. Individually increasing or decreasing expression of these TFs suppressed AML cell growth, providing evidence that leukaemia cells are sensitive to dosage of SE-associated genes. Our results demonstrate that Mediator kinases can negatively regulate SE-associated gene expression in specific cell types and can be pharmacologically targeted as a therapeutic approach to AML.
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Affiliation(s)
- Henry E Pelish
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Brian B Liau
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Ioana I Nitulescu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | | | - Zachary C Poss
- Department of Chemistry and Biochemistry, University of Colorado, Campus Box 596, Boulder, CO 80303, USA
| | - Diogo H Da Silva
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Brittany T Caruso
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Alexander Arefolov
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Olugbeminiyi Fadeyi
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Amanda L Christie
- Lurie Family Imaging Center, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Karrie Du
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Deepti Banka
- Division of Hematology/Oncology, Children's Hospital, Boston, MA 02215, USA
| | - Elisabeth V Schneider
- Proteros Biostructures GmbH, Bunsenstrasse 7a, D-82152 Martinsried, Germany.,Max-Planck-Institut für Biochemie, Am Kloperspitz 18, D-82152 Martinsried, Germany
| | - Anja Jestel
- Proteros Biostructures GmbH, Bunsenstrasse 7a, D-82152 Martinsried, Germany
| | - Ge Zou
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Chong Si
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Christopher C Ebmeier
- Department of Chemistry and Biochemistry, University of Colorado, Campus Box 596, Boulder, CO 80303, USA
| | | | - Andrei V Krivtsov
- Cancer Biology and Genetics Program and Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Andrew G Myers
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Nancy E Kohl
- Lurie Family Imaging Center, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Andrew L Kung
- Department of Pediatrics, Columbia University Medical Center, New York, NY 10032, USA
| | - Scott A Armstrong
- Cancer Biology and Genetics Program and Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | | | - Dylan J Taatjes
- Department of Chemistry and Biochemistry, University of Colorado, Campus Box 596, Boulder, CO 80303, USA
| | - Matthew D Shair
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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Zou G, Zeng Z, Chen W, Ling L. Self-reported illnesses and service utilisation among migrants working in small-to medium sized enterprises in Guangdong, China. Public Health 2015; 129:970-8. [PMID: 26077388 DOI: 10.1016/j.puhe.2015.04.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 04/06/2015] [Accepted: 04/22/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVES As one of the most vulnerable populations in China, many migrants work in the small-to-medium-sized enterprises (SMEs). This study aims to describe the self-reported illnesses and service utilization of the migrants working in the SMEs in Pearl River Delta Areas (PRDA) of Guangdong province, China. STUDY DESIGN Cross-sectional survey. METHODS We interviewed 856 migrants working in the SMEs of different manufacturing industries in 2012. Descriptive analysis was employed to report self-reported illnesses and service utilisation among migrants in the last two weeks and in the last year. Statistical tests such as χ2 test were used to explore factors influencing their service utilisation. RESULTS In the last two weeks, 91(11%) of the respondents reported having any illness. The most reported illness was respiratory problem (69%), while 9.9%, 7.7% and 13% reported having digestive, skin and other problems respectively. The most important symptom was cough (39%). Thirty-seven percent of the respondents who reported any illness had visited health facilities. The lower income group were more likely to visit health facilities than the higher income group (P = 0.006). The most reported reason for not visiting health facilities was 'feeling not serious' (65%). In the last year, 13% reported having respiratory problems and 7.8% reported accidental injuries. Less than 3% received hospitalization care. The proportion of those without hospitalization to those who should have been hospitalized was 31%. CONCLUSION Underuse of the health service among migrants working in the SMEs could be associated with the 'healthy migrant' effect. However, when assessed among the ill migrants in the SMEs, the utilisation rate was still low mainly due to their poor health awareness. Improving their risk perception and integration of occupational and general health service is crucial to improve the health conditions and utilisation of service among migrants in the SMES.
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Affiliation(s)
- G Zou
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, Guangzhou, China; Institute for International Health and Development, Queen Margaret University, Edinburgh, UK
| | - Z Zeng
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, Guangzhou, China; Hunan Provincial Women and Children's Hospital, Changsha, Hunan, China
| | - W Chen
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, Guangzhou, China; Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - L Ling
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, Guangzhou, China; Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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Lin L, Huang H, Sivayoganathan M, Liu L, Zou G, Duley WW, Zhou Y. Assembly of silver nanoparticles on nanowires into ordered nanostructures with femtosecond laser radiation. Appl Opt 2015; 54:2524-2531. [PMID: 25968544 DOI: 10.1364/ao.54.002524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/16/2015] [Indexed: 06/04/2023]
Abstract
In this work, we show that well-ordered structures of silver nanoparticles on nanowire substrates can be produced by irradiation with femtosecond (fs) laser pulses at fluences ranging from 10.3 to 15.9 mJ/cm2 if the direction of polarization is parallel to the long axis of the nanowire. Experimental results show that a uniformly spaced distribution of nanoparticles is more readily produced on nanowires with lengths L≤2λ, where λ=800 nm is the laser wavelength. The distribution of nanoparticles is found to become less well organized as L≥2λ. Finite element method simulations, combined with experimental observations, indicate that nanoparticles are initially distributed in response to the electric field along the clean Ag nanowire arising from optical excitation. This electric field is responsible for the attraction of nanoparticles to certain locations on the nanowire. We show how a fs-laser-driven assembly of nanoparticles on nanowires can be used in the development of a nanoscale optical logic processor. This method of creating periodic arrays of metallic nanoparticles on nanowire substrates then has many possible applications in electro-optics.
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Zou G, Papirio S, van Hullebusch ED, Puhakka JA. Fluidized-bed denitrification of mining water tolerates high nickel concentrations. Bioresour Technol 2015; 179:284-290. [PMID: 25549902 DOI: 10.1016/j.biortech.2014.12.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/11/2014] [Accepted: 12/12/2014] [Indexed: 05/14/2023]
Abstract
This study revealed that fluidized-bed denitrifying cultures tolerated soluble Ni concentrations up to 500 mg/L at 7-8 and 22°C. From 10 to 40 mg/L of feed Ni, denitrification resulted in complete nitrate and nitrite removal. The concomitant reduction of 30 mg/L of sulfate produced 10 mg/L of sulfide that precipitated nickel, resulting in soluble effluent Ni below 22 mg/L. At this stage, Dechloromonas species were the dominant denitrifying bacteria. From 60 to 500 mg/L of feed Ni, nickel remained in solution due to the inhibition of sulfate reduction. At soluble 60 mg/L of Ni, denitrification was partially inhibited prior to recover after 34 days of enrichment by other Ni-tolerant species (including Delftia, Zoogloea and Azospira) that supported Dechloromonas. Subsequently, the FBR cultures completely removed nitrate even at 500 mg/L of Ni. Visual Minteq speciation model predicted the formation of NiS, NiCO3 and Ni3(PO4)2, whilst only Ni3(PO4)2 was detected by XRD.
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Affiliation(s)
- G Zou
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland.
| | - S Papirio
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland
| | - E D van Hullebusch
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454 Marne-la-Vallée, France
| | - J A Puhakka
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland
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Khanna R, Zou G, D'Haens G, Feagan BG, Sandborn WJ, Vandervoort MK, Rolleri RL, Bortey E, Paterson C, Forbes WP, Levesque BG. A retrospective analysis: the development of patient reported outcome measures for the assessment of Crohn's disease activity. Aliment Pharmacol Ther 2015; 41:77-86. [PMID: 25348809 DOI: 10.1111/apt.13001] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 08/31/2014] [Accepted: 10/02/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND The Crohn's Disease Activity Index (CDAI) is a measure of disease activity based on symptoms, signs and a laboratory test. The US Food and Drug Administration has indicated that patient reported outcomes (PROs) should be the primary outcome in randomised controlled trials for Crohn's disease (CD). AIM As no validated PRO exists for CD, to investigate whether CDAI diary card items could be modified for this purpose. METHODS Data from a trial of rifaximin-extended intestinal release were used to identify cut-points for stool frequency, pain and general well-being using receiver operating characteristic curves with CDAI <150 as criterion. The operating properties of 2- and 3-item PRO were evaluated using data from a trial of methotrexate in CD. Regression analysis determined PRO2 and PRO3 scores that correspond to CDAI-defined thresholds of 150, 220 and 450 and changes of 50, 70 and 100 points. RESULTS Optimum cut-points for CDAI remission were mean daily stool frequency ≤1.5, abdominal pain ≤1, and general well-being score of ≤1 (areas under the ROC curve 0.79, 0.91 and 0.89, respectively). The effect estimates were similar using 2- and 3-item PROs or CDAI. PRO2 and PRO3 values corresponding to CDAI scores of 150, 220 and 450 points were 8, 14, 34 and 13, 22, 53. The corresponding values for CDAI changes of 50, 70 and 100, were 2, 5, 8 and 5, 9, 14. Responsiveness to change was similar for both PROs. CONCLUSION Patient reported outcomes derived from CDAI diary items may be appropriate for use in clinical trials for CD.
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Affiliation(s)
- R Khanna
- Department of Medicine, University of Western Ontario, London, ON, Canada; Robarts Clinical Trials Inc., University of Western Ontario, London, ON, Canada
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Papirio S, Zou G, Ylinen A, Di Capua F, Pirozzi F, Puhakka JA. Effect of arsenic on nitrification of simulated mining water. Bioresour Technol 2014; 164:149-54. [PMID: 24852647 DOI: 10.1016/j.biortech.2014.04.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/16/2014] [Accepted: 04/21/2014] [Indexed: 05/27/2023]
Abstract
Mining and mineral processing of gold-bearing ores often release arsenic to the environment. Ammonium is released when N-based explosives or cyanide are used. Nitrification of simulated As-rich mining waters was investigated in batch bioassays using nitrifying cultures enriched in a fluidized-bed reactor (FBR). Nitrification was maintained at 100mg AsTOT/L. In batch assays, ammonium was totally oxidized by the FBR enrichment in 48 h. As(III) oxidation to As(V) occurred during the first 3h attenuating arsenic toxicity to nitrification. At 150 and 200mg AsTOT/L, nitrification was inhibited by 25%. Candidatus Nitrospira defluvii and other nitrifying species mainly colonized the FBR. In conclusion, the FBR enriched cultures of municipal activated sludge origins tolerated high As concentrations making nitrification a potent process for mining water treatment.
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Affiliation(s)
- S Papirio
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland.
| | - G Zou
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland
| | - A Ylinen
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland
| | - F Di Capua
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland; Department of Civil, Architectural and Environmental Engineering, University of Napoli "Federico II", 80125 Napoli, Italy
| | - F Pirozzi
- Department of Civil, Architectural and Environmental Engineering, University of Napoli "Federico II", 80125 Napoli, Italy
| | - J A Puhakka
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-33101 Tampere, Finland
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Levesque BG, Greenberg GR, Zou G, Sandborn WJ, Singh S, Hauenstein S, Ohrmund L, Wong CJ, Stitt LW, Shackelton LM, King D, Lockton S, Ducharme J, Feagan BG. A prospective cohort study to determine the relationship between serum infliximab concentration and efficacy in patients with luminal Crohn's disease. Aliment Pharmacol Ther 2014; 39:1126-35. [PMID: 24689499 DOI: 10.1111/apt.12733] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 11/21/2013] [Accepted: 03/14/2014] [Indexed: 12/08/2022]
Abstract
BACKGROUND Patients with Crohn's disease (CD) may experience disease relapse on maintenance infliximab. Anti-drug antibodies likely contribute to loss of response, and serum infliximab levels likely correlate with efficacy. AIM To prospectively evaluate the relationship between trough serum infliximab concentration and disease activity. METHODS Adult patients (N = 327) with a diagnosis of CD who had received at least five consecutive infliximab infusions and who planned to receive at least two additional infusions were enrolled. The Crohn's Disease Activity Index (CDAI), serum infliximab, C-reactive protein (CRP) and antibodies-to-infliximab (ATI) were assessed at baseline, week 4 and week 8. Receiver operating characteristic (ROC) analysis examined the relationship between infliximab concentrations and disease activity. RESULTS The mean CDAI score, which decreased 1.05 points between infusions, did not correlate with the mean change in trough infliximab concentration (+0.39 μg/mL; r = 0.099, P = 0.083), but was associated with the mean change in CRP concentration (r = 0.19, P < 0.001). Trough infliximab concentrations below 2.8-4.6 μg/mL best predicted a ≥ 70 point increase in the CDAI between infusions, and those below 2.7-2.8 μg/mL best predicted CRP >5 mg/mL at the second infusion. ATI at either visit decreased the proportion of patients with therapeutic infliximab trough levels compared with patients who were ATI negative (17.5% vs. 77.3% at visit 1 and 13.8% vs. 75.6% at visit 3; P < 0.001 for both comparisons). CONCLUSIONS This prospective study confirms the relationship between trough infliximab concentrations, inflammation and antibodies-to-infliximab. Infliximab trough concentrations below 3 μg/mL may increase the likelihood of symptoms and inflammation (ClinicalTrials.gov identifier: NCT00676988).
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Affiliation(s)
- B G Levesque
- Robarts Clinical Trials, Inc., Robarts Research Institute, Western University, London, ON, Canada; Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
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Zou G, Wei X, Witter S, Yin J, Walley J, Liu S, Yang H, Chen J, Tian G, Mei J. Incremental cost-effectiveness of improving treatment results among migrant tuberculosis patients in Shanghai. Int J Tuberc Lung Dis 2014; 17:1056-64. [PMID: 23827030 DOI: 10.5588/ijtld.12.0799] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Two projects were introduced in October 2007 to improve treatment completion among rural-to-urban migrant tuberculosis (TB) patients in Shanghai. The Communicable Disease Research Consortium (COMDIS) project provided financial incentives to poor patients, whereas the Global Fund to Fight AIDS, Tuberculosis and Malaria (Global Fund) project provided incentives to all patients and increased staff time. OBJECTIVE To assess the incremental cost-effectiveness of these two projects. METHODS Case study. Costs were assessed from a societal perspective. The primary measure of effectiveness was the treatment completion rate. The incremental cost-effectiveness ratio was calculated as the additional cost of the intervention divided by the additional percentage of patients completing treatment compared to controls. RESULTS Post intervention, the treatment completion rates in the COMDIS and Global Fund projects were respectively 89% and 88%, 17% and 16% higher than in the control district (76%). For one additional per cent of patients to complete treatment, the additional cost of the COMDIS intervention was US$1891, 91% lower than that of the Global Fund intervention (US$21,904). CONCLUSION The intervention that addressed the financial barriers of poor patients was more cost-effective than the comprehensive intervention that provided assistance to both patients and providers. Further study is needed to understand the process of interventions prior to wider scale-up.
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Affiliation(s)
- G Zou
- Communicable Disease Research Consortium China Programme, Nuffield Centre for International Health and Development, University of Leeds, Shenzhen, China
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Liu J, Zou G, Wu Y, Li W. Clinical research of patients with multiple organ dysfunction syndrome induced by severe heat stroke: nine case reports and literature review. Crit Care 2014. [PMCID: PMC4068185 DOI: 10.1186/cc13264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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