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Zhou G, Luo S, He J, Chen N, Zhang Y, Cai S, Guo X, Chen H, Song C. Corrigendum to "Effectiveness and safety of tuberculosis preventive treatment for contacts of patients with multidrug-resistant tuberculosis: a systematic review and meta-analysis" [Clin Microbiol Infect 30 (2024) 189-196]. Clin Microbiol Infect 2024:S1198-743X(24)00155-1. [PMID: 38522843 DOI: 10.1016/j.cmi.2024.03.024] [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: 03/26/2024]
Affiliation(s)
- G Zhou
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - S Luo
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - J He
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - N Chen
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - Y Zhang
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - S Cai
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - X Guo
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - H Chen
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - C Song
- Department of The Affiliated Anning First People's Hospital of Kunming University of Science and Technology, Kunming, Yunnan Province, China.
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Zhang H, Wang S, Zhang J, Zhou G, Sun X, Wang Y, Wang Y, Zhang K. High-sensitivity piezoresistive sensors based on cellulose handsheets using origami-inspired corrugated structures. Carbohydr Polym 2024; 328:121742. [PMID: 38220352 DOI: 10.1016/j.carbpol.2023.121742] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/19/2023] [Accepted: 12/26/2023] [Indexed: 01/16/2024]
Abstract
Cellulose-based composites have attracted significant attention in the fabrication and advancement of wearable devices due to their sustainable, degradable, and cost-effective properties. However, achieving a cellulosic sensor with reliable sensory feedback remains challenging owing to the deficiency in reversible microstructures during response processes. In this study, we developed a piezoresistive sensor consisting of nearly pure cellulose handsheets using origami-inspired corrugated structures to achieve durable and sensitive piezoresistive responses. Multi-walled carbon nanotubes (MWCNTs) were used as conducting agents. With the addition of 7 wt% MWCNTs, 36.27 % of the cellulose fiber surface was covered and the conductivity of cellulose handsheets was increased to 8.7 S/m. The obtained conductive cellulose handsheets were transformed into corrugated structures and integrated orthogonally to construct the piezoresistive sensors with reversible electrical paths for electrons. The restorable corrugated structure endowed the sensors with a wide workable pressure range (0-10 kPa), high sensitivity (6.09 kPa-1 in a range of 0-0.92 kPa), fast response time (<280 ms), and good durability (>1000 cycles). Furthermore, the practical applications of the proposed sensors as wearable devices were demonstrated through phonation, real-time sports monitoring, and step pressure tests.
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Affiliation(s)
- Hao Zhang
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, Henan 450000, PR China.
| | - Shijun Wang
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, Henan 450000, PR China
| | - Jie Zhang
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, Henan 450000, PR China
| | - Gan Zhou
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, Henan 450000, PR China
| | - Xiaohang Sun
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, PR China
| | - Yiming Wang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yujie Wang
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, Henan 450000, PR China
| | - Kang Zhang
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, Henan 450000, PR China
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Zhou G, Xie D, Fan R, Yang Z, Du J, Mai S, Xie L, Wang Q, Mai T, Han Y, Lai F. Comparison of Pulmonary and Extrapulmonary Models of Sepsis-Associated Acute Lung Injury. Physiol Res 2023; 72:741-752. [PMID: 38215061 PMCID: PMC10805253] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/09/2023] [Indexed: 01/14/2024] Open
Abstract
To compare different rat models of sepsis at different time points, based on pulmonary or extrapulmonary injury mechanisms, to identify a model which is more stable and reproducible to cause sepsis-associated acute lung injury (ALI). Adult male Sprague-Dawley rats were subjected to (1) cecal ligation and puncture (CLP) with single (CLP1 group) or two repeated through-and-through punctures (CLP2 group); (2) tail vein injection with lipopolysaccharide (LPS) of 10mg/kg (IV-LPS10 group) or 20 mg/kg (IV-LPS20 group); (3) intratracheal instillation with LPS of 10mg/kg (IT-LPS10 group) or 20mg/kg (IT-LPS20 group). Each of the model groups had a sham group. 7-day survival rates of each group were observed (n=15 for each group). Moreover, three time points were set for additional experimental studying in each model group: 4 hours, 24 hours and 48 hours after modeling (every time point, n=8 for each group). Rats were sacrificed to collect BALF and lung tissue samples at different time points for detection of IL-6, TNF-alpha, total protein concentration in BALF and MPO activity, HMGB1 protein expression in lung tissues, as well as the histopathological changes of lung tissues. More than 50 % of the rats died within 7 days in each model group, except for the IT-LPS10 group. In contrast, the mortality rates in the two IV-LPS groups as well as the IT-LPS20 group were significantly higher than that in IT-LPS10 group. Rats received LPS by intratracheal instillation exhibited evident histopathological changes and inflammatory exudation in the lung, but there was no evidence of lung injury in CLP and IV-LPS groups. Rat model of intratracheal instillation with LPS proved to be a more stable and reproducible animal model to cause sepsis-associated ALI than the extrapulmonary models of sepsis.
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Affiliation(s)
- G Zhou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
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Hu X, Li M, Li H, Song P, Zhang Y, Zhou G, Tang J, Peng L, Ma Q, Chen X. Decreased platelet miR-199a-5p level might lead to high on-clopidogrel platelet reactivity in patients with coronary artery disease. Platelets 2023; 34:2200860. [PMID: 37070954 DOI: 10.1080/09537104.2023.2200860] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Clopidogrel combined with aspirin is widely used in coronary artery disease (CAD) patients, while some patients exhibit high platelet activity when receiving the combined treatment. Current environmental and genetic factors could only explain part of the variability in clopidogrel efficacy. Human platelets harbor abundant miRNAs which might affect clopidogrel efficacy by regulating the expression of key proteins in the clopidogrel antiplatelet signaling pathway. This study aimed to investigate the association between platelet miRNA levels and clopidogrel efficacy. Here we recruited 508 CAD patients who underwent clopidogrel antiplatelet therapy and determined the platelet reactivity index (PRI) to evaluate antiplatelet reactivity responses to clopidogrel. Subsequently, 22 patients with extreme clopidogrel response were selected for platelet small RNA sequencing. Another 41 CAD patients taking clopidogrel were collected to verify the differentially expressed candidate miRNAs. We found the metabolic types of the CYP2C19 enzyme (based on CYP2C19 * 2 and * 3 polymorphisms) could significantly affect the PRI of CAD patients with or without percutaneous coronary intervention (PCI) in Chinese. A total of 43 miRNAs were differentially expressed in the platelets from the 22 extreme clopidogrel response samples, and 109 miRNAs were differentially expressed in the 13 CYP2C19 extensive metabolizers with extreme clopidogrel response. Platelet miR-199a-5p levels were correlated negatively with PRI after clopidogrel therapy. Studies in cultured cells revealed that miR-199a-5p inhibited the expression of VASP, a key effector protein downstream of the P2Y12 receptor. In conclusion, we found the expression of VASP could be inhibited by miR-199a-5p, and decreased platelet miR-199a-5p was associated with high on-clopidogrel platelet reactivity in CAD patients.
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Affiliation(s)
- Xiaolei Hu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
- National Institution of Drug Clinical Trial, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Mupeng Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - He Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Peiyuan Song
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Yanjiao Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Gan Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
- National Institution of Drug Clinical Trial, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Jie Tang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Liming Peng
- Department of Cardiovascular Medicine, Xiangya Hospital, Central South university, Changsha, Hunan, P.R.China
| | - Qilin Ma
- Department of Cardiovascular Medicine, Xiangya Hospital, Central South university, Changsha, Hunan, P.R.China
| | - Xiaoping Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
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Liao X, Zhou G, Liu H, Zhang F. An unusual case of facial cutaneous tuberculosis. J Postgrad Med 2023; 69:241-242. [PMID: 37555421 PMCID: PMC10846819 DOI: 10.4103/jpgm.jpgm_100_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/21/2023] [Accepted: 06/07/2023] [Indexed: 08/10/2023] Open
Affiliation(s)
- X Liao
- Shandong Provincial Hospital for Skin Diseases and Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - G Zhou
- Shandong Provincial Hospital for Skin Diseases and Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - H Liu
- Shandong Provincial Hospital for Skin Diseases and Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - F Zhang
- Shandong Provincial Hospital for Skin Diseases and Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Ruscitto A, Chen P, Tosa I, Wang Z, Zhou G, Safina I, Wei R, Morel MM, Koch A, Forman M, Reeve G, Lecholop MK, Wilson M, Bonthius D, Chen M, Ono M, Wang TC, Yao H, Embree MC. Lgr5-expressing secretory cells form a Wnt inhibitory niche in cartilage critical for chondrocyte identity. Cell Stem Cell 2023; 30:1179-1198.e7. [PMID: 37683603 PMCID: PMC10790417 DOI: 10.1016/j.stem.2023.08.004] [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: 07/29/2022] [Revised: 06/06/2023] [Accepted: 08/07/2023] [Indexed: 09/10/2023]
Abstract
Osteoarthritis is a degenerative joint disease that causes pain, degradation, and dysfunction. Excessive canonical Wnt signaling in osteoarthritis contributes to chondrocyte phenotypic instability and loss of cartilage homeostasis; however, the regulatory niche is unknown. Using the temporomandibular joint as a model in multiple species, we identify Lgr5-expressing secretory cells as forming a Wnt inhibitory niche that instruct Wnt-inactive chondroprogenitors to form the nascent synovial joint and regulate chondrocyte lineage and identity. Lgr5 ablation or suppression during joint development, aging, or osteoarthritis results in depletion of Wnt-inactive chondroprogenitors and a surge of Wnt-activated, phenotypically unstable chondrocytes with osteoblast-like properties. We recapitulate the cartilage niche and create StemJEL, an injectable hydrogel therapy combining hyaluronic acid and sclerostin. Local delivery of StemJEL to post-traumatic osteoarthritic jaw and knee joints in rabbit, rat, and mini-pig models restores cartilage homeostasis, chondrocyte identity, and joint function. We provide proof of principal that StemJEL preserves the chondrocyte niche and alleviates osteoarthritis.
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Affiliation(s)
- Angela Ruscitto
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA; Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Peng Chen
- Clemson University-Medical University of South Carolina Joint Bioengineering Program, Department of Bioengineering, Clemson University, Clemson, SC 29634, USA; Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Ikue Tosa
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA; Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Ziyi Wang
- Department of Molecular Biology and Biochemistry, Okayama University Graduate, School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 7008525, Japan
| | - Gan Zhou
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA; Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Ingrid Safina
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Ran Wei
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Mallory M Morel
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Alia Koch
- Section of Hospital Dentistry, Division of Oral & Maxillofacial Surgery, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Michael Forman
- Section of Hospital Dentistry, Division of Oral & Maxillofacial Surgery, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Gwendolyn Reeve
- Division of Oral and Maxillofacial Surgery, New York Presbyterian Weill Cornell Medicine, New York, NY 10065, USA
| | - Michael K Lecholop
- Department of Oral and Maxillofacial Surgery, College of Dental Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Marshall Wilson
- Clemson University-Medical University of South Carolina Joint Bioengineering Program, Department of Bioengineering, Clemson University, Clemson, SC 29634, USA; Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Daniel Bonthius
- Clemson University-Medical University of South Carolina Joint Bioengineering Program, Department of Bioengineering, Clemson University, Clemson, SC 29634, USA; Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Mo Chen
- Wnt Scientific, LLC, Harlem Biospace, New York, NY 10027, USA
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate, School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 7008525, Japan; Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 7008525, Japan
| | - Timothy C Wang
- Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY 10032, USA; Division of Digestive and Liver Diseases, Department of Medicine, College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Hai Yao
- Clemson University-Medical University of South Carolina Joint Bioengineering Program, Department of Bioengineering, Clemson University, Clemson, SC 29634, USA; Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Mildred C Embree
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA; Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY 10032, USA.
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Kamal K, Young K, Ly S, Manjaly P, Xiang DH, Zhou G, Mostaghimi A, Theodosakis N. Investigating the association between gender minority identity and skin cancer prevalence: A cohort study in the United States All of Us research program. J Eur Acad Dermatol Venereol 2023; 37:e1151-e1153. [PMID: 37114382 PMCID: PMC10524765 DOI: 10.1111/jdv.19156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023]
Affiliation(s)
- K Kamal
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - K Young
- Harvard Medical School, Boston, Massachusetts, USA
| | - S Ly
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - P Manjaly
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Boston University School of Medicine, Boston, Massachusetts, USA
| | - D H Xiang
- Harvard Medical School, Boston, Massachusetts, USA
| | - G Zhou
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - A Mostaghimi
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - N Theodosakis
- Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts, USA
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Zhou G, Chen Y, Dai F, Yu X. Chitosan-based nerve guidance conduit with microchannels and nanofibers promotes schwann cells migration and neurite growth. Colloids Surf B Biointerfaces 2023; 221:112929. [DOI: 10.1016/j.colsurfb.2022.112929] [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] [Received: 08/22/2022] [Revised: 09/27/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
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Zhou Y, Bai F, Li X, Zhou G, Tian X, Li G, Zhang Y, Zhou X, Xu D, Ding Y. Genetic polymorphisms in MIR1208 and MIR5708 are associated with susceptibility to COPD in the Chinese population. Pulmonology 2023; 29:6-12. [PMID: 36115827 DOI: 10.1016/j.pulmoe.2021.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 11/06/2020] [Revised: 05/06/2021] [Accepted: 07/24/2021] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a complex disease characterized by limited airflow and is influenced by genetic and environmental factors. The purpose of this study was to investigate the effects of gene polymorphisms in MIR5708 and MIR1208 on COPD risk. METHODS Four single nucleotide polymorphisms (SNPs) in MIR5708 (rs6473227 and rs16907751) and MIR1208 (rs2608029 and rs13280095) were selected and genotyped among 315 COPD patients and 314 healthy controls using the Agena MassARRAY platform. SPSS 18.0 was used for statistical analysis and data processing. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the association between genetic variants of MIR1208 and MIR5708 and COPD risk. RESULTS The results suggested that rs16907751 variants in MIR5708 contributed to an increased susceptibility to COPD in the allelic (P = 0.001), co-dominant (homozygous) (P = 0.001), dominant (P = 0.017), recessive (P = 0.002), and additive (P = 0.002) models. The effects of MIR5708 and MIR1208 gene polymorphisms on the risk of COPD were age-, sex-, smoking status-, and BMI-related. Furthermore, the C-A and G-A haplotypes of rs2608029 and rs13280095 in MIR1208 were identified as risk factors for COPD in the population over 70 years (P = 0.029) and in women (P = 0.049), respectively. Finally, significant associations between rs16907751genotypes with pulse rate and forced expiratory volume in 1 s were found among COPD patients. CONCLUSION Genetic polymorphisms in MIR5708 and MIR1208 are associated with increased risk of COPD in China.
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Affiliation(s)
- Y Zhou
- Center of Appointment Clinic Service, Hainan General Hospital, Hainan affiliated Hospital of Hainan Medical University, Hainan, China
| | - F Bai
- Department of Science and Education Department, Hainan General Hospital, Hainan affiliated Hospital of Hainan Medical University, Hainan, China
| | - X Li
- Department of General Practice, People's Hospital of Wanning, Hainan, China
| | - G Zhou
- Department of Nursing, People's Hospital of Wanning, Hainan, China
| | - X Tian
- Department of Medical, People's Hospital of Wanning, Hainan, China
| | - G Li
- Department of General Practice, People's Hospital of Wanning, Hainan, China
| | - Y Zhang
- Department of General Practice, Hainan General Hospital, Hainan affiliated Hospital of Hainan Medical University, Hainan, China
| | - X Zhou
- Department of General Practice, Hainan General Hospital, Hainan affiliated Hospital of Hainan Medical University, Hainan, China
| | - D Xu
- Department of Emergency, Hainan General Hospital, Hainan affiliated Hospital of Hainan Medical University, Hainan, China.
| | - Y Ding
- Department of General Practice, Hainan General Hospital, Hainan affiliated Hospital of Hainan Medical University, Hainan, China.
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Zhong XF, Zhou G, Xu SM, Li XM, Xu Y, Liu WL, Zhang YX, He LC, Shen QY, Xu PS. Pharmacokinetics of Esomeprazole Magnesium After Single Oral Doses in Healthy Subjects: Bioequivalence Study and Food Effects. Clin Pharmacol Drug Dev 2022; 11:1308-1313. [PMID: 35822412 DOI: 10.1002/cpdd.1139] [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: 04/06/2022] [Accepted: 06/08/2022] [Indexed: 01/27/2023]
Abstract
This study was designed to evaluate the bioequivalence of the newly developed delayed-release oral suspension (test) 40 mg esomeprazole magnesium compared to its marketed counterpart (40 mg; reference) in healthy adult Chinese subjects. We conducted randomized, open-label, two-period, single-dose, two-way crossover trials over a 7-day washout period, comprising a fasting trial and a fed trial. The subjects were administered the test or reference products in a 1:1 ratio at random throughout each period. Then, in the next session, they received the alternate products. Liquid chromatography-tandem mass spectrometry and WinNonlin software were used to assess the bioequivalence of esomeprazole peak plasma concentration (Cmax ) and area under the concentration-time curve (AUC). Overall, 33 subjects participated in the fasting trial and 42 subjects participated in the fed trial. Under both situations, the 90% confidence interval for the ratio of geometric means of Cmax , AUC0-t , and AUC0-∞ were within equivalence ranges (80%-125%). In these trials, no severe adverse events or protocol violations were observed. Moreover, when esomeprazole was administered while fed, the tmax was delayed, and both Cmax and AUC were reduced. The results of this research suggest that the test and reference formulations were bioequivalent under fasting and fed states.
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Affiliation(s)
- Xue-Feng Zhong
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Gan Zhou
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Su-Mei Xu
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Xiao-Min Li
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Ying Xu
- Baiyang Pharmaceutical Limited by Share Ltd, Qingdao, PR China
| | - Wan-Li Liu
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Yan-Xin Zhang
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Lin-Cong He
- Anbisheng Pharmaceutical Limited by Share Ltd, Shanghai, PR China
| | - Qiu-Ying Shen
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Ping-Sheng Xu
- Phase Ⅰ Clinical Trial Center, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
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Lin Q, Ding K, Zhao R, Wang H, Ren L, Wei Y, Ye Q, Cui Y, He G, Tang W, Feng Q, Zhu D, Chang W, Lv Y, Mao Y, Wang X, Liang L, Zhou G, Liang F, Xu J. 43O Preoperative chemotherapy prior to primary tumor resection for colorectal cancer patients with asymptomatic resectable primary lesion and synchronous unresectable liver-limited metastases (RECUT): A prospective, randomized, controlled, multicenter clinical trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.075] [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: 12/07/2022] Open
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Zhou G, Murji A, Matelski J, Shapiro J, Shirreff L. 8459 Prevalence, Predictors and Hospital- and Surgeon-Level Variation of Preoperative Anemia: A Multi-Centre Retrospective Study. J Minim Invasive Gynecol 2022. [DOI: 10.1016/j.jmig.2022.09.415] [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: 11/25/2022]
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13
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Yang P, Jin Y, Zhou G, Xie X, Jin H, Shi Y. A Prospective Study of Differences in the Incidence of Radiation Pneumonitis in Elderly Patients between Volumetric Arc Modulated Therapy and Step-and-Shoot Intensity-Modulated Radiation Therapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1562] [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: 11/28/2022]
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14
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Zhou G, Zhao MW, Cao YP, Lin JH, Wang WG, Guo A, Tian H. [A multicenter cross-sectional study of quality of life and nonsurgical treatment in patients with knee osteoarthritis]. Zhonghua Yi Xue Za Zhi 2022; 102:2799-2805. [PMID: 36124353 DOI: 10.3760/cma.j.cn112137-20220406-00719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the influencing factors of health-related quality of life (HRQoL) in patients with knee osteoarthritis, and to analyze the non-surgical treatment of knee osteoarthritis. Methods: Demographic variables, treatment modalities, imaging data, and 12-item short form health survey (SF-12) scores of patients with knee osteoarthritis in orthopedic outpatient departments of five hospitals in Beijing from December 2017 to November 2018 were collected to analyze influencing factors of HRQoL and non-surgical treatment. Results: A total of 2 034 patients were included. There were 530 males (26.1%) and 1 504 females (73.9%), with a mean age of (59.17±10.22) years. In terms of physical quality of life, female patients with knee osteoarthritis had lower physical components summary (PCS) compared with male patients (β=-0.521, P=0.036); patients aged ≥64 years had lower PCS than those aged<55 years (β=-0.636, P=0.026). Patients with an education of more than 12 years had higher PCS than those with less than 10 years (β=1.063, P<0.001). Compared to patients with mild clinical symptoms, the PCS of patients with moderate clinical symptoms was lower (β=-0.860, P=0.002), while the PCS of those with severe clinical symptoms was much lower (β=-1.126, P<0.001). Patients treated with combination therapy had higher PCS than untreated patients (β=0.731, P=0.005). In terms of mental quality of life, compared to patients engaged in sedentary work, the mental components summary (MCS) of patients engaged in mild manual labor jobs was lower (β=-0.712, P=0.015); Compared to patients with a Charson comorbidity index of 0, patients with a Charlson comorbidity index ≥ 2 had lower MCS (β=-1.183, P=0.007). In the past 12 months, 648 (31.9%), 143 (7.0%), 406 (20.0%), 680 (33.4%), 343 (16.9%), 681 (33.5%), 170 (8.4%) patients had used non-steroid anti-inflammatory drugs (NSAIDs), acetaminophen, glucosamine/chondroitin formulations, physical therapy, articular cavity puncture injection, traditional Chinese medicine treatment and exercise therapy, respectively. Total of 451 patients (22.2%) received monotherapy and 889 patients (43.7%) received combination therapy. Conclusions: The major non-surgical treatment methods for patients with knee osteoarthritis in Beijing are NSAIDs, physiotherapy and traditional Chinese medicine. Combination therapy is used more frequently than monotherapy. Physical quality of life is related to gender, age, education, severity of symptoms and treatment, while mental quality of life is related to occupational labor and comorbidities.
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Affiliation(s)
- G Zhou
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| | - M W Zhao
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| | - Y P Cao
- Department of Orthopedics, Peking University First Hospital, Beijing 100034, China
| | - J H Lin
- Department of Orthopedics, Peking University People's Hospital, Beijing 100044, China
| | - W G Wang
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - A Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H Tian
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
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Wen H, Feng Z, H. Ge, Quan C, Zhou X, Yang B, Liu F, Wang J, Y. Wang, J. Zhao, Zhou G, Wen X, Liu Y, Zhu X, Wang G, Zhang Y, Li B, Cai S, Zhang Z, Wu X. 603P Multi-cancer early detection in gynaecological malignancies based on integrating multi-omics assays by liquid biopsy: A prospective study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.731] [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: 11/30/2022] Open
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16
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Zhou G, Huang Z. Structure determination of a highly disordered 2D MOF by continuous-rotation electron diffraction method. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322090696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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17
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Liu H, Hussain Z, Xie Q, Yan X, Zeng C, Zhou G, Cao S. Targeting PI3K/AKT/mTOR pathway to enhance the anti-leukemia efficacy of venetoclax. Exp Cell Res 2022; 417:113192. [PMID: 35568072 DOI: 10.1016/j.yexcr.2022.113192] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/07/2022] [Accepted: 04/30/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND The treatment of acute myeloid leukemia (AML) is developing towards "targeted therapy", which faces challenges such as low sensitivity and drug resistance. Therefore, targeted drugs need to be used in combination with other drugs to overcome clinical problems. OBJECTIVE AML cells and animal models were used to determine the synergistic anti-leukemic effect of Dactolisib (BEZ235) and Venetoclax (ABT199) and explore its mechanism. METHODS In vitro experiments, we used cell counting kit-8 (CCK8), flow cytometry, real-time quantitative PCR (qPCR), and Western blot to detect the anti-leukemic effects of ABT199 and BEZ235. In vivo experiments, female nude mice were injected subcutaneously with THP-1 cells to form tumors, evaluate the combined effect of ABT199 and BEZ235 by indicators such as tumor size, tumor weight, Ki67 and cleaved-Caspase3 staining. The mice's body weight and HE staining were used to evaluate the liver injury and adverse drug reactions. RESULTS The combination of BEZ235 and ABT199 has a synergistic effect through promoting apoptosis and inhibiting proliferation. The BEZ235 increased the drug sensitivity of ABT199 by reducing the MCL-1 protein synthesis and promoted the degradation of MCL-1 protein, which is considered as the mechanism of reversing ABT199 resistance. Furthermore, the BEZ235 and ABT199 can synergistically enhance the inhibition of PI3K/AKT/mTOR pathway. CONCLUSION The combination of BEZ235 and ABT199 exhibits a synergistic anti-tumor effect in AML by down-regulating MCL-1 protein.
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Affiliation(s)
- Hongcai Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha, 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410078, PR China; National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, PR China
| | - Zubair Hussain
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Qingqing Xie
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha, 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410078, PR China; National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, PR China
| | - Xueying Yan
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha, 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410078, PR China; National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, PR China
| | - Chenxing Zeng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha, 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410078, PR China; National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, PR China
| | - Gan Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha, 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410078, PR China; National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, PR China; Phase I Clinical Trial Research Center, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, PR China
| | - Shan Cao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha, 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410078, PR China; National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, PR China.
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18
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Zhang J, Zhou G. [Oral manifestations of sexually transmitted diseases]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:547-552. [PMID: 35484680 DOI: 10.3760/cma.j.cn112144-20220319-00117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- J Zhang
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - G Zhou
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
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Louie E, O’Hara A, Geahlen J, Lawrence J, Latif H, Zhou G. Gene Editing/Gene Therapies: A BREAKTHROUGH GLP AAV-ITR SANGER SEQUENCING SOLUTION FOR NEW DRUG DEVELOPMENT. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00381-4] [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: 11/03/2022]
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20
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O’Hara A, Qiu Y, Louie E, Latif H, Mozdzierz C, Zhou G. Gene Editing/Gene Therapies: ADVANCING AAV: NOVEL SEQUENCING SOLUTIONS FOR QUALITY CONTROL IN GENE THERAPY. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00369-3] [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: 11/03/2022]
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21
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Stephens M, O’Hara A, DeVito I, Turner L, Mozdzierz C, Latif H, Zhou G. Gene Editing/Gene Therapies: HIGH-THROUGHPUT RNA SEQUENCING DIRECTLY FROM CELL LYSATES ENABLES REPRODUCIBLE PHENOTYPIC PROFILING FOR CRISPR TREATMENT AND CELL RESPONSE SCREENING APPLICATIONS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00367-x] [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: 11/29/2022]
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22
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Liang L, Zhang Y, Wang D, Yang F, Zhou G. 186P CIP2A modulates PKM2 dimer-tetramer transition through phosphorylation of serine 287 in non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.219] [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: 11/01/2022] Open
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23
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Wang G, Gao S, Zhou G. 175P Mutations and clinical significance of calcium voltage-gated channel subunit alpha 1E (CACNA1E) in non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.208] [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: 11/01/2022] Open
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24
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Ren Q, Zhou Y, Yan M, Zheng C, Zhou G, Xia X. Imaging-guided percutaneous transthoracic needle biopsy of nodules in the lung base: fluoroscopy CT versus cone-beam CT. Clin Radiol 2022; 77:e394-e399. [DOI: 10.1016/j.crad.2022.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 02/02/2022] [Indexed: 01/08/2023]
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25
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Wang X, Zhou G, Zeng J, Yang T, Chen J, Li T. Retraction notice: Effect of educational interventions on health in childhood: a meta-analysis of randomized controlled trials [Public Health Volume 164, November 2018, Pages 134-147]. Public Health 2021; 201:125. [PMID: 34895533 DOI: 10.1016/j.puhe.2021.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). The article is a duplicate of a paper that has already been published in Medicine, 97 (2018) e11849 https://doi.org/10.1097/MD.0000000000011849. Redundant publications overweigh the relative importance of published findings and distort the academic record of the authors. One of the conditions of submission of a paper for publication is therefore that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.
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Affiliation(s)
- X Wang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Third Affiliated Hospital of Zunyi Medical College, Guizhou 563000, China
| | - G Zhou
- Third Affiliated Hospital of Zunyi Medical College, Guizhou 563000, China
| | - J Zeng
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| | - T Yang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| | - J Chen
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| | - T Li
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China.
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An M, Zhou G, Li Y, Xiang T, Ma Y, Liu X, Li X, Zhao S, Zhu M. Characterization of genetic fundamentals for piglet mortality at birth in Yorkshire, Landrace, and Duroc sows. Anim Genet 2021; 53:142-145. [PMID: 34897732 DOI: 10.1111/age.13162] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2021] [Indexed: 11/29/2022]
Abstract
Piglet mortality is an economically important complex trait that impacts sow prolificacy. Genetic analyses for piglet mortality at weaning have been reported in dozens of studies, but not for piglet mortality at birth. In this study, we used multi-breed data sets from Yorkshire, Landrace, and Duroc sows to characterize the genetic fundamentals of piglet mortality at birth. The heritabilities from parity I to III were estimated to be 0.0630, 0.1031, and 0.1140 respectively. By using a combined strategy, a total of 21 SNPs were detected in three parities, of which six were observed in parity I, five in parity II and 10 in parity III. Genome annotation revealed that these SNPs were harbored within or close to 19 candidate genes. The candidate genes were found to associate with the reproductive system and embryonic development in the tissue expression database, which are reasonably related to piglet mortality. These findings are expected to provide much information for understanding the genetic and genomic fundamentals of farrowing mortality.
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Affiliation(s)
- M An
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - G Zhou
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Y Li
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - T Xiang
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
| | - Y Ma
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
| | - X Liu
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
| | - X Li
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
| | - S Zhao
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
| | - M Zhu
- Key Lab of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
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Nian Y, Moloney AP, Li C, Allen P, Harrison SM, Prendiville R, Kerry JP, Zhou G. A comparison of meat composition, tenderness and the fatty acid profile of three muscles from Holstein-Friesian bulls from production system resulting in final ages of either <16 or 19 months. Anim Prod Sci 2021. [DOI: 10.1071/an20697] [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] [Indexed: 11/23/2022]
Abstract
Context The increased number of male dairy origin calves in Ireland due to the abolition of European Union milk quotas is a potential resource for the beef industry. Rearing these animals as bulls rather than steers is more efficient from a production perspective. Ensuring satisfactory quality of bull beef from dairy origin is essential. Aim To determine the effect of two production systems and three muscle types on physico-chemical characteristics and fatty acid (FA) profile of beef from Holstein-Friesian (HF) bulls. Methods Thirty HF bulls were equally assigned to two production systems, namely, slaughter at under 16 months of age or slaughter at 19 months of age. Longissimus thoracis (LT), Semitendinosus (ST) and Gluteus medius (GM) muscles were excised post-slaughter for determination of pH, colour, Warner–Bratzler (WB) variables, cook loss, chemical composition [intramuscular fat (IMF), moisture, protein, ash], collagen characteristics and FA profile. Results WB variables and cook loss after 14 days postmortem ageing, and insoluble and total collagen contents were higher, while IMF content, redness and saturation at 24 h post-blooming were lower for muscles from the 19-month production system. Muscles from the under 16-month production system had a higher saturated fatty acid (SFA) proportion and n-6:n-3 polyunsaturated fatty acid (PUFA) ratio, while muscle from the 19-month production system had a higher PUFA proportion, n-3 PUFA proportion and PUFA:SFA ratio. The GM muscle had the lowest L* value, followed by LT and ST. Yellowness, saturation and hue angle were greater in ST. LT had lower WB variables, cook loss, moisture, and a higher IMF content than ST and GM. The PUFA proportion and PUFA:SFA ratio were highest in ST, followed by GM and LT. IMF, total FA, SFA and monounsaturated fatty acid (MUFA) concentrations were higher in LT from the under 16-month production system bulls (the interaction). Conclusions Beef from the under 16-month production system compared with beef from the 19-month production system, and LT compared with ST and GM muscles had better quality characteristics. Implications Dairy bulls can produce beef of acceptable quality. The findings will guide selection of the combination of production system and muscle type most appropriate to specific market requirements.
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Prenen H, Kyi C, Van Lancker G, Patel S, Mittag D, Weaver A, Bol K, Stalbovskaya V, Pulini J, Zhou G, Dong Z, Asatiani E, Hodi F. 136P Phase I dose escalation study of MCLA-145, a bispecific antibody targeting CD137 and PD-L1 in solid tumors. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.155] [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: 10/19/2022] Open
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29
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Zhou G, Wang Z, Palipana A, Andrinopoulou E, Afonso P, McPhail G, Clancy J, Gecili E, Szczesniak R. 34: Predicting declines in lung function with the U.S. CF registry: Impact of initiating highly effective modulator therapy. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01459-4] [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: 10/20/2022]
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Zhou FJ, Zeng CX, Kuang W, Cheng C, Liu HC, Yan XY, Chen XP, Zhou G, Cao S. Metformin exerts a synergistic effect with venetoclax by downregulating Mcl-1 protein in acute myeloid leukemia. J Cancer 2021; 12:6727-6739. [PMID: 34659562 PMCID: PMC8518002 DOI: 10.7150/jca.60208] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 08/20/2021] [Indexed: 12/20/2022] Open
Abstract
Background: Recently, one of the specific BH3-mimetics, Venetoclax has been approved by FDA providing new options for newly diagnosed AML patient especially who are unfitted to receive conventional chemotherapy. Though the clinical success of venetoclax has been achieved in clinical outcomes such as complete remission (CR) and overall survival. Acquired resistance to ABT-199 which is induced by the regulation of apoptosis pathway is still an important clinical problem. To this end, the attempt to combine drugs which can reverse the compensatory regulation is urgent. Methods: In three AML cell lines (KG-1, Kasumi-1 and THP-1), the anti-AML effects of the combination of ABT-199 (Venetoclax) and metformin or the two drugs used alone were compared. CCK8 was used to evaluate the cell viability, and flow cytometry was used to estimate the rate of apoptosis, Western blot method was performed to detect apoptosis-related protein levels. In mice experiments, female BALB/c-nu nude mice were subcutaneously injected with THP-1 cells for subcutaneous tumor formation, and the combined effect of ABT-199 and metformin was tested. The evaluation indicators were tumor size, tumor weight, and Ki67 staining. Mouse body weight and HE staining were detected to evaluate liver damage and adverse drug reactions. Results: Both in vitro and in vivo experiments showed that compared with metformin or ABT-199 alone, the combined use of the two drugs exerts a synergistic effect on promoting apoptosis, thereby producing a strong anti-leukemia effect. Furthermore, after a short incubation time, ABT-199 swiftly increased the expression level of the anti-apoptotic protein Mcl-1, while the combined use of metformin and ABT-199 significantly reduced the level of Mcl-1. Notably, Metformin significantly downregulates the level of Mcl-1 protein by inhibiting its protein production. To less extent, metformin can also downregulate the expression of another anti-apoptotic protein, BCL-xl. Conclusion: Metformin downregulates the expression of anti-apoptotic proteins Mcl-1 and Bcl-xl by inhibiting protein production, and shows a synergistic anti-tumor effect with ABT-199 in acute myeloid leukemia.
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Affiliation(s)
- Fang-Jiao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Chen-Xing Zeng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Wei Kuang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Cong Cheng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Hong-Cai Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Xue-Ying Yan
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Xiao-Ping Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
| | - Gan Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China.,Phase I Clinical Trial Research Center, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, Hunan, P.R. China
| | - Shan Cao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha 410078, PR China.,National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha 410008, Hunan, PR China
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Cheng C, Yuan F, Chen XP, Zhang W, Zhao XL, Jiang ZP, Zhou HH, Zhou G, Cao S. Inhibition of Nrf2-mediated glucose metabolism by brusatol synergistically sensitizes acute myeloid leukemia to Ara-C. Biomed Pharmacother 2021; 142:111652. [PMID: 34112534 DOI: 10.1016/j.biopha.2021.111652] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 11/13/2020] [Revised: 04/13/2021] [Accepted: 04/21/2021] [Indexed: 12/20/2022] Open
Abstract
Chemotherapy resistance remains to be the primary barrier to acute myeloid leukemia (AML) treatment failure. Nuclear factor-erythroid 2-related factor 2 (Nrf2) has been well established as a truly pleiotropic transcription factor. Inhibition of Nrf2 function increases the sensitivity of various chemotherapeutics and overcomes chemoresistance effectively. Brusatol (Bru) has been reported to decrease Nrf2 protein expression specifically by ubiquitin degradation of Nrf2. However, it remains elusive whether combination of Brusatol and Cytarabine (Ara-C) elicits a synergistic antitumor effect in AML. Our results demonstrated that combination of Ara-C and Brusatol synergistically exerted remarkable pro-apoptosis effect in HL-60 and THP-1 cells. Mechanistically, synergistic anti-tumor effect of Ara-C/Brusatol in AML cells is mediated by attenuating Nrf2 expression. To our surprise, Nrf2 inhibition by Brusatol causes downregulation of the expression of glycolysis-related proteins and decreased glucose consumption and lactate production, whereas the level of ROS production was unaffected. The activation of Nrf2 by Sulforaphane (SFP) could reverse the chemotherapeutic effect and changes of glycolysis of concomitant of Ara-C with Brusatol in AML cell lines. Additionally, Ara-C/Brusatol co-treatment decreased Glucose-6-phosphate dehydrogenase (G6PD) protein expression and increased the sensitivity of Ara-C. Moreover, the mouse xenograft in vivo experiment confirmed that combining Ara-C with Brusatol exerted stronger antileukemia than Ara-C alone. The efficacy, together with the mechanistic observations, reveals the potential of simultaneously giving these two drugs and provides a rational basis for targeting glucose catabolism in future clinical therapeutic approach.
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Affiliation(s)
- Cong Cheng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China
| | - Fang Yuan
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China
| | - Xiao-Ping Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China
| | - Wei Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China
| | - Xie-Lan Zhao
- Department of Hematology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China
| | - Zhi-Ping Jiang
- Department of Hematology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China
| | - Hong-Hao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China
| | - Gan Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China; National Institution of Drug Clinical Trial, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan 410008, PR China.
| | - Shan Cao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, 110 Xiangya Road, Changsha 410078, PR China; Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Center South University, Changsha 410008, Hunan, PR China.
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32
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Shah S, Yu J, Liu Q, Zhou G, Yan G, Zhou H, Hussain M, Hussain A, Habiba U, Khalid F, Ullah S, Rahim F, Adil M, Zeb U, Ambrin. The Siberian pine growth dynamics in Altai Mountains, China. BRAZ J BIOL 2021; 83:e244011. [PMID: 34468510 DOI: 10.1590/1519-6984.244011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/26/2021] [Indexed: 11/21/2022] Open
Abstract
Climatic factors play an essential role in the growth of tree ring width. In this study, we aimed to evaluate the correlation between climatic variables and tree-ring growth characteristics of Pinus sibirica in Altai mountains, northwestern China. This study being is first of its kind on climate growth analysis of Pinus sibirica in northwestern China. The study showed great potential to understand the species growing under the specific climatic conditions. Total of 70 tree cores collected from three sites in the sampling area, out of which 63 tree cores considered for this study. The effect of climatic variables which was studied include precipitation, temperature and PDSI. Our results showed that Tree Ring Width chronology has a significantly positive correlation with the late winter (March) temperature and significant negative correlation with the July temperatures. A significant correlation was observed with the late summer precipitation whereas no significant relation found with the Palmer Drought Severity Index. These significant correlations with temperature and precipitation suggested that this tree species had the potential for the reconstruction of the past climate in the area.
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Affiliation(s)
- S Shah
- Beijing Forestry University, College of Forestry, Beijing, China.,University of Haripur, Haripur, Khyber Pakhtunkhwa, Pakistan.,Institute of Agriculture Sciences and Forestry, University of Swat. Khyber Pakhtunkhwa, Pakistan
| | - J Yu
- School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong, Jiangsu, China
| | - Q Liu
- Beijing Forestry University, College of Forestry, Beijing, China
| | - G Zhou
- Jiangxi Academy of Forestry, Nanchang, China
| | - G Yan
- Forestry Survey and Planning, Institute of Guizhou, Province Guiyang, China
| | - H Zhou
- Guizhou Academy of Forestry, No. 32, Fuyuan South Road Nanming District, Guiyang, China
| | - M Hussain
- University of Haripur, Haripur, Khyber Pakhtunkhwa, Pakistan
| | - A Hussain
- University of Haripur, Haripur, Khyber Pakhtunkhwa, Pakistan
| | - U Habiba
- University of Haripur, Haripur, Khyber Pakhtunkhwa, Pakistan
| | - F Khalid
- University of Haripur, Haripur, Khyber Pakhtunkhwa, Pakistan
| | - S Ullah
- Shaheed Benazir Bhutto University, Department of Forestry, Khyber Pakhtunkhwa, Pakistan
| | - F Rahim
- Department of Botany, Bacha Khan University Charsadda, Khyber Pakhtunkhwa, Pakistan
| | - M Adil
- Department of Chemical and Life Sciences, Qurtaba University of Science and information technology Peshawar, Pakistan
| | - U Zeb
- University of Haripur, Haripur, Khyber Pakhtunkhwa, Pakistan
| | - Ambrin
- Hadaf College, Punjab Group of Colleges, Khyber Pakhtunkhwa, Pakistan
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Bongioví G, Häußler A, Giambrone S, Catanzaro I, Forte R, Zhou G, Di Maio P. Structural assessment of a whole toroidal sector of the HELIAS 5-B breeding blanket. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112618] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Xiao FY, Zhou FJ, Yuan F, Kuang W, Zhou G, Zhou HH, Cao S. The potentiation of menadione on imatinib by downregulation of ABCB1 expression. Clin Exp Pharmacol Physiol 2021; 47:997-1004. [PMID: 32112424 DOI: 10.1111/1440-1681.13293] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 02/03/2020] [Accepted: 02/26/2020] [Indexed: 11/29/2022]
Abstract
Imatinib was the first BCR-ABL inhibitor used in clinical practice to treat chronic myeloid leukaemia (CML) and significantly improve the life expectancy of CML patients in the chronic phase. However, a portion of CML patients are resistant to imatinib. This study aimed to determine whether menadione (Vitamin K3) can improve imatinib efficacy in CML and to thoroughly explore the combination regimen mechanism between imatinib and menadione. Menadione improved imatinib efficacy in K562 cells by downregulating ABCB1 expression and increased the intracellular concentration of imatinib, which confirmed that this combination regimen is more effective than imatinib monotherapy. The results demonstrate that menadione and imatinib combination therapy may be a promising approach to refractory CML.
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Affiliation(s)
- Fei-Yan Xiao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Fang-Jiao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Fang Yuan
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Wei Kuang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Gan Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China.,Institution of Drug Clinical Trial, Xiangya Hospital, Central South University, Changsha, China
| | - Hong-Hao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Shan Cao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China.,Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
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35
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Zhou X, Shafique K, Sajid M, Ali Q, Khalili E, Javed MA, Haider MS, Zhou G, Zhu G. Era-like GTP protein gene expression in rice. BRAZ J BIOL 2021; 82:e250700. [PMID: 34259718 DOI: 10.1590/1519-6984.250700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/19/2021] [Indexed: 11/22/2022] Open
Abstract
The mutations are genetic changes in the genome sequences and have a significant role in biotechnology, genetics, and molecular biology even to find out the genome sequences of a cell DNA along with the viral RNA sequencing. The mutations are the alterations in DNA that may be natural or spontaneous and induced due to biochemical reactions or radiations which damage cell DNA. There is another cause of mutations which is known as transposons or jumping genes which can change their position in the genome during meiosis or DNA replication. The transposable elements can induce by self in the genome due to cellular and molecular mechanisms including hypermutation which caused the localization of transposable elements to move within the genome. The use of induced mutations for studying the mutagenesis in crop plants is very common as well as a promising method for screening crop plants with new and enhanced traits for the improvement of yield and production. The utilization of insertional mutations through transposons or jumping genes usually generates stable mutant alleles which are mostly tagged for the presence or absence of jumping genes or transposable elements. The transposable elements may be used for the identification of mutated genes in crop plants and even for the stable insertion of transposable elements in mutated crop plants. The guanine nucleotide-binding (GTP) proteins have an important role in inducing tolerance in rice plants to combat abiotic stress conditions.
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Affiliation(s)
- X Zhou
- Linyi University, College of Life Science, Linyi, Shandong, China
| | - K Shafique
- Government Sadiq College Women University, Department of Botany, Bahawalpur, Pakistan
| | - M Sajid
- University of Okara, Faculty of Life Sciences, Department of Biotechnology, Okara, Pakistan
| | - Q Ali
- University of Lahore, Institute of Molecular Biology and Biotechnology, Lahore, Pakistan
| | - E Khalili
- Tarbiat Modarres University, Faculty of Science, Department of Plant Science, Tehran, Iran
| | - M A Javed
- University of the Punjab Lahore, Department of Plant Breeding and Genetics, Lahore, Pakistan
| | - M S Haider
- University of the Punjab Lahore, Department of Plant Pathology, Lahore, Pakistan
| | - G Zhou
- Yangzhou University, The Ministry of Education of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, Jiangsu, China
| | - G Zhu
- Yangzhou University, The Ministry of Education of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, Jiangsu, China
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36
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Wang T, Xu YQ, Yuan YX, Xu PW, Zhang C, Li F, Wang LN, Yin C, Zhang L, Cai XC, Zhu CJ, Xu JR, Liang BQ, Schaul S, Xie PP, Yue D, Liao ZR, Yu LL, Luo L, Zhou G, Yang JP, He ZH, Du M, Zhou YP, Deng BC, Wang SB, Gao P, Zhu XT, Xi QY, Zhang YL, Shu G, Jiang QY. Succinate induces skeletal muscle fiber remodeling via SUCNR1 signaling. EMBO Rep 2021; 22:e53027. [PMID: 34097347 DOI: 10.15252/embr.202153027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 04/21/2021] [Indexed: 11/09/2022] Open
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37
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Meng X, Wang J, Zhou J, Tian Q, Qie B, Zhou G, Duan W, Zhu Y. Tumor cell membrane-based peptide delivery system targeting the tumor microenvironment for cancer immunotherapy and diagnosis. Acta Biomater 2021; 127:266-275. [PMID: 33813091 DOI: 10.1016/j.actbio.2021.03.056] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [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: 09/10/2020] [Revised: 03/11/2021] [Accepted: 03/24/2021] [Indexed: 01/22/2023]
Abstract
The development of an effective delivery system for peptides targeting the tumor microenvironment has always been a hot topic of research in the field of cancer diagnosis and therapy. In this study, superparamagnetic iron oxide nanoparticles (SPIO NPs) were encapsulated with H460 lung cancer cell membranes (SPIO NP@M), and two peptides, namely PD-L1 inhibitory peptide (TPP1) and MMP2 substrate peptide (PLGLLG), were conjugated to the H460 membrane (SPIO NP@M-P). Homologous targeting, cytotoxicity, and pharmacokinetics of SPIO NP@M-P were evaluated. The TPP1 peptide was delivered and released to the tumor microenvironment through the homotypic effect of tumor cell membrane and specific digestion by the tumor-specific enzyme MMP2. The newly developed delivery system (SPIO NP@M-P) for the PD-L1 inhibitory peptide could effectively extend the half-life of the peptides (60 times longer than that for peptides alone) and could maintain the ability to reactivate T cells and inhibit the tumor growth both in vitro and in vivo. Furthermore, SPIO NPs in the system could be used as a tumor imaging agent and thus show the effect of peptide treatment. The SPIO NP@M might serve as a promising theranostic platform for therapeutic application of peptides in cancer therapy. STATEMENT OF SIGNIFICANCE: A multifunctional delivery system (SPIO NP@M) was constructed for effectively delivering therapeutic peptides into the tumor microenvironment for cancer diagnosis and therapy. In this paper, the TPP-1 peptide inhibiting the binding of PD-L1 and PD-1 was delivered and released into the tumor microenvironment by the homotypic targeting of H460 cell membrane and specific digestion by the MMP2 enzyme. SPIO NPs in this system were aggregated effectively at the tumor sites and were used for magnetic resonance imaging of tumors. The SPIO NP@M-P delivery system could effectively extend the half-life of the TPP-1 peptide (60 times longer than that of the free peptide) and could maintain the ability to re-activate T cells and inhibit tumor growth in vitro and in vivo. In conclusion, the SPIO NP@M system coated with lung cancer cell membrane and loaded with the PD-L1-blocking TPP-1 peptide could be a promising integrated platform for tumor diagnosis and treatment.
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Affiliation(s)
- Xiangzhou Meng
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China; Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Jiaojiao Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Jundong Zhou
- Nanjing Medical University, Suzhou Cancer Center, Core Lab, Affiliated Suzhou Hospital, Suzhou 215001, Jiangsu, China
| | - Qingmei Tian
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Bo Qie
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China; Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Gan Zhou
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China; Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Wei Duan
- GenePharma-Deakin Joint laboratory of Aptamer Medicine, Waurn Ponds, Victoria 3216, Australia
| | - Yimin Zhu
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China.
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38
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Zhou L, Zeng X, Rao T, Tan Z, Zhou G, Ouyang D, Chen L. Evaluating the protective effects of individual or combined ginsenoside compound K and the downregulation of soluble epoxide hydrolase expression against sodium valproate-induced liver cell damage. Toxicol Appl Pharmacol 2021; 422:115555. [PMID: 33915122 DOI: 10.1016/j.taap.2021.115555] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/17/2021] [Accepted: 04/24/2021] [Indexed: 12/16/2022]
Abstract
Sodium valproate (SVP) is one of the most commonly prescribed antiepileptic drugs. However, SVP is known to induce hepatotoxicity, which limits its clinical application for treating various neurological disorders. Previously, we found that ginsenoside compound K (G-CK) demonstrated protective effects against SVP-induced hepatotoxicity by mitigating oxidative stress and mitochondrial damage, as well as downregulating the expression of soluble epoxide hydrolase (sEH) in rats. This study aimed to assess the effect of G-CK on SVP-induced cytotoxicity in human hepatocytes (L02 cell line), as well as the effect of the downregulation of sEH expression on both the hepatotoxicity of SVP and the hepatoprotective effects of G-CK. We observed that G-CK significantly ameliorated the decrease of cell viability, elevated ALT, AST and ALP activities, significant oxidative stress, and loss of mitochondrial membrane potential induced by SVP in L02 cells. G-CK also inhibited the SVP-mediated upregulation of sEH expression. Transfection of the L02 cells with siRNA-sEH led to a partial improvement in the L02 cytotoxicity caused by SVP by mitigating cellular oxidative stress without recovering the reduced mitochondrial membrane potential. Furthermore, the combination of siRNA-sEH and G-CK had better inhibitory effects on the SVP-induced changes of all detection indices except mitochondrial membrane potential than G-CK alone. Together, our results demonstrated that the combination of siRNA-sEH and G-CK better suppressed the SVP-induced cytotoxicity in L02 cells compared to either G-CK or siRNA-sEH alone.
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Affiliation(s)
- Luping Zhou
- Department of Clinical Pharmacology, , Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China
| | - Xiangchang Zeng
- Department of Clinical Pharmacology, , Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China
| | - Tai Rao
- Department of Clinical Pharmacology, , Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China
| | - Zhirong Tan
- Department of Clinical Pharmacology, , Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China
| | - Gan Zhou
- Department of Clinical Pharmacology, , Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Institution of Drug Clinical Trial, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Dongsheng Ouyang
- Department of Clinical Pharmacology, , Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, PR China; Hunan Key Laboratory for Bioanalysis of Complex Matrix Samples, Changsha 410000, PR China.
| | - Lulu Chen
- Hunan Key Laboratory for Bioanalysis of Complex Matrix Samples, Changsha 410000, PR China.
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Liu H, Chen P, Yang YL, Zhu KW, Wang T, Tang L, Liu YL, Cao S, Zhou G, Zeng H, Zhao XL, Zhang W, Chen XP. TBC1D16 predicts chemosensitivity and prognosis in adult acute myeloid leukemia (AML) patients. Eur J Pharmacol 2021; 895:173894. [PMID: 33476656 DOI: 10.1016/j.ejphar.2021.173894] [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: 05/12/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 10/22/2022]
Abstract
Acute myeloid leukemia (AML) is a hematopoietic disease with poor survival. Chemotherapy resistance is one of the determinant factors influencing AML prognosis. To identify genes possibly affecting the drug responses in AML, the Illumina Infinium MethylationEPIC (850K) was used to screen for differential DNA methylation loci between patients achieved complete remission (CR) or not (non-CR) after induction therapy in 37 AML patients. Then, 32 differentially methylated sites (DMS) were selected for replication in another 86 AML patients by next-generation sequencing. Nine sites including cg03988660, cg16804603, cg18166936, cg11308319, cg09095403, cg18493214, cg01443536, cg16030878 and cg10143426 were replicated. Analysis of the Gene Expression Omnibus (GEO) database showed that mRNA expression of TBC1D16 and HDAC4 was associated with AML prognosis. Methylation level of the cg16030878 in TBC1D16 3'-UTR correlated positively with TBC1D16 mRNA expression in samples both in the TCGA database and clinically collected in the study. Both higher cg16030878 methylation and higher TBC1D16 mRNA expression were associated with increased risk of non-CR and worse overall survival (OS) in AML patients. In AML cells, knockdown of TBC1D16 decreased cell proliferation and ERK phosphorylation levels, as well as increased sensitivity to mitoxantrone and decitabine indicated by IC50. In patients with combined use of decitabine, those patients with CR showed significantly lower TBC1D16 mRNA expression. On the contrary, knockdown of TBC1D16 resulted in decreased sensitivity to cytarabine in U937 cells. Our findings implicated that TBC1D16 is a potential predictor for chemosensitivity and prognosis in adult AML patients.
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Affiliation(s)
- Han Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Peng Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Yong-Long Yang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Ke-Wei Zhu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Tao Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Ling Tang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Yan-Ling Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Shan Cao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Gan Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Hui Zeng
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China.
| | - Xie-Lan Zhao
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China.
| | - Wei Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China.
| | - Xiao-Ping Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, Hunan, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China.
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Webster PJ, Tavangar Ranjbar N, Turner J, El-Sharkawi A, Zhou G, Chitsabesan P. Outcomes following emergency colorectal cancer presentation in the elderly. Colorectal Dis 2020; 22:1924-1932. [PMID: 32609919 DOI: 10.1111/codi.15229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 05/21/2020] [Indexed: 02/08/2023]
Abstract
AIM Colorectal cancer is predominantly a disease of the elderly and up to 30% of these patients will present as an emergency. We compared the outcomes of 'elderly' patients presenting to our unit with a colorectal cancer emergency over a 10-year period with those of a 'younger' cohort. METHODS A single centre retrospective review of colorectal cancer emergencies between 1 April 2007 and 1 April 2017 was performed. Patients were separated into two cohorts: 'young' (< 75 years) and 'elderly' (≥ 75 years). Data collected included demographics, disease status, treatment and outcomes. RESULTS A total of 341 patients (< 75 years: n = 154; ≥ 75 years: n = 187) presented as a colorectal cancer emergency. Significantly fewer 'elderly' patients underwent curative surgical procedures (72% vs 49%, P < 0.0001) or received adjuvant chemotherapy (56% vs 21%, P < 0.0001). 'Elderly' patients had significantly more postoperative cardio-respiratory complications (7% vs 36%, P < 0.0001), but despite this there was no significant difference in 30-day mortality (7% vs 12%) and survival rates at 1 year (75% vs 74%) or 3 years (56% vs 49%). Elderly patients treated with best supportive care had a median overall survival of just 62 (range 1-955) days. CONCLUSION Patients ≥ 75 years presenting as a colorectal cancer emergency were significantly less likely to undergo emergency curative surgery or receive adjuvant chemotherapy than those < 75 years. However, the 30-day mortality, 1- and 3-year survival rates for patients undergoing curative surgery were comparable.
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Affiliation(s)
- P J Webster
- Department of Colorectal Surgery, York Teaching Hospital, York, UK
| | | | - J Turner
- Department of Colorectal Surgery, York Teaching Hospital, York, UK
| | - A El-Sharkawi
- Department of Colorectal Surgery, York Teaching Hospital, York, UK
| | - G Zhou
- Department of Colorectal Surgery, York Teaching Hospital, York, UK
| | - P Chitsabesan
- Department of Colorectal Surgery, York Teaching Hospital, York, UK
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Mu L, Liu J, Zhou G, Wu C, Chen B, Lu Y, Lu J, Yan X, Zhu Z, Nasir K, Spatz E, Krumholz H, Zheng X. Obesity prevalence and risks among Chinese adults: findings from China PEACE Million Persons Project, 2014–2018. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
With demographic and epidemiologic transitions, China has become home to the greatest number of obese individuals in the world. Effective policy intervention requires a contemporary assessment of obesity across broad socio-demographic subgroups.
Purpose
We aim to assess the prevalence of overall and abdominal obesity by socio-demographic characteristics and the associations of these characteristics with obesity in China.
Methods
Using the data of 2.7-million community-dwelling participants aged 35–75 years in the China PEACE Million Persons Project, a nationwide cross-sectional screening project from 2014 to 2018, we calculated the prevalence of overall and abdominal obesity based on national guideline definitions (body mass index ≥28 kg/m2, waist circumference ≥85/90 cm for women/men). We examined 12 available socio-demographic variables that are potentially associated with obesity, in addition to self-reported co-morbidities, and quantified the associations of these socio-demographic characteristics with obesity using multivariable mixed models.
Results
The prevalence of overall and abdominal obesity were 15.8% and 37.6% in women and 15.0% and 36.3% in men (Figure). Compared to individuals with normal weight, those with overall obesity had a higher prevalence of hypertension, dyslipidemia, and diabetes (in women: by 30.4, 16.1, and 6.0 percent points; in men, by 29.9, 31.2, and 5.8 percent points). A similar pattern was observed with abdominal obesity. In women, those aged 55–64 years constituted the largest age group with overall and abdominal obesity (33.7% and 35.0%), while in men, those aged 45–54 and 55–64 years constituted the largest age group with overall obesity (30.4%) and abdominal obesity (30.5%), respectively. Older women were at substantially higher risk for obesity (e.g., adjusted relative risk [95% CI] of women aged 65–75 vs. 35–44 years: 1.29 [1.27–1.31] for overall obesity and 1.76 [1.74–1.77] for abdominal obesity) while older men were not. Higher education was associated with lower risk in women (e.g., those with college or university education vs. less than primary school: 0.47 [0.46–0.48] for overall obesity and 0.61 [0.60–0.62] for abdominal obesity) but higher risk in men (1.07 [1.05–1.10] and 1.17 [1.16–1.19]). In both women and men, current smoking was associated with lower risk for obesity, and current drinking was associated with higher risk, but the magnitude of associations was smaller in women than men.
Conclusions
In China, over one in seven individuals meet criteria for overall obesity, and one in three for abdominal obesity. Wide variation exists across socio-demographic subgroups. The associations of age and education with obesity are significant and differ by sex. Understanding obesity in contemporary China has broad domestic policy implications and provides a valuable international reference.
Figure 1
Funding Acknowledgement
Type of funding source: Other. Main funding source(s): The National Key Research and Development Program from the Ministry of Science and Technology of China, the CAMS Innovation Fund for Medical Science
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Affiliation(s)
- L Mu
- Yale New Haven Hospital, New Haven, United States of America
| | - J Liu
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
| | - G Zhou
- Yale New Haven Hospital, New Haven, United States of America
| | - C Wu
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
| | - B Chen
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
| | - Y Lu
- Yale New Haven Hospital, New Haven, United States of America
| | - J Lu
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
| | - X Yan
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
| | - Z Zhu
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
| | - K Nasir
- Yale New Haven Hospital, New Haven, United States of America
| | - E.S Spatz
- Yale New Haven Hospital, New Haven, United States of America
| | - H.M Krumholz
- Yale New Haven Hospital, New Haven, United States of America
| | - X Zheng
- Fuwai Hospital, CAMS&PUMC, National Center for Cardiovascular Diseases, Beijing, China
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Zhou X, Zhou G, Junka R, Chang N, Anwar A, Wang H, Yu X. Fabrication of polylactic acid (PLA)-based porous scaffold through the combination of traditional bio-fabrication and 3D printing technology for bone regeneration. Colloids Surf B Biointerfaces 2020; 197:111420. [PMID: 33113493 DOI: 10.1016/j.colsurfb.2020.111420] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 06/13/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 01/09/2023]
Abstract
Artificial bone grafts possess the advantages of good biodegradability, customizable dimensions, and sufficient mechanical properties, which can promote cell proliferation and differentiation in bone tissue regeneration. 3D printing is a delicate approach that endows the scaffolds with excellent controllability and repeatability when compared with conventional bio-fabrication methods. However, the limitation of printing resolution somehow makes it difficult to prepare bone defect substitution with high porosity and hierarchical construct. In this study, we utilized polylactic acid (PLA) as printing materials and developed a smart strategy to combine 3D printing technology with bio-fabrication methods. A porous planar scaffold was printed and then rolled up into a spiral structure with adjustable pore size and porosity. The topographic features and morphology of the artificial scaffolds were examined through stereomicroscope and SEM, respectively. The porous spiral scaffold presented good mechanical properties in a set of mechanical testing. Later, the human fetal osteoblasts (hFOB) were cultured on the porous spiral scaffold and its control groups for a total of 28 days. The MTS analysis, alkaline phosphatase (ALP) assay, and alizarin red S (ARS) staining were used to analyze the cell proliferation, osteogenic differentiation, and mineral deposition after a certain period of time. The results indicated that compared with the other two scaffolds, the porous spiral scaffold with larger surface area and better interconnections between internal porous networks could significantly improve the spatial cell compartment and promote cell growth and differentiation. The porous spiral scaffold may see versatile applications in large-volume bone defects regeneration.
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Affiliation(s)
- Xiaqing Zhou
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States; Department of Chemistry and Chemical Biology, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Gan Zhou
- Department of Chemistry and Chemical Biology, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Radoslaw Junka
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Ningxiao Chang
- Department of Chemistry and Chemical Biology, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Aneela Anwar
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States; Department of Basic Sciences and Humanities, University of Engineering and Technology, New Campus, GT Road, Lahore, 39020, Pakistan
| | - Haoyu Wang
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States; Department of Chemistry and Chemical Biology, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Xiaojun Yu
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, NJ, 07030, United States.
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Yang K, Wang L, Zhou G, Lin X, Peng J, Wang L, Luo L, Wang J, Shu G, Wang S, Gao P, Zhu X, Xi Q, Zhang Y, Jiang Q. Correction to Phytol Promotes the Formation of Slow-Twitch Muscle Fibers through PGC-1α/miRNA but Not Mitochondria Oxidation. J Agric Food Chem 2020; 68:9276. [PMID: 32806112 DOI: 10.1021/acs.jafc.0c04760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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44
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Zhou G, Hu W, Pei H, Chen H, Hei TK. Recent progress on the Chinese space programme and radiation research. Ann ICRP 2020; 49:213-216. [PMID: 32734778 DOI: 10.1177/0146645320940828] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Manned space exploration was initiated in China in 1992, and substantial progress has been made. The next step is to build the Chinese Space Station (CSS), which is planned to be launched in 2020. The CSS will provide an on-orbit laboratory for experimental studies including space radiation research. The health risk of space radiation, especially carcinogenesis, is a major concern for long-term space exploration. Establishing a risk assessment system suitable for Chinese astronauts and developing effective countermeasures are major tasks for Chinese space radiobiologists. The Institute of Space Life Sciences, Soochow University has focused on these topics for years. We established cancer models with low-dose-rate exposure of alpha particles, and elucidated a microRNA-TGFβ network regulating bystander effects and a lncRNA-cytoskeleton network regulating genomic instability induced by ionising radiation. We also confirmed the radioresistance of quiescent cells, which inspires a potential strategy to improve individual radioresistance during long-term space travel. However, we believe that a multi-disciplinary strategy must be developed to protect astronauts from highly energised space radiation.
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Affiliation(s)
- G Zhou
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Institute of Life Sciences in Space, Medical College of Soochow University, Suzhou 215123, China; e-mail: .,Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, China
| | - W Hu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Institute of Life Sciences in Space, Medical College of Soochow University, Suzhou 215123, China; e-mail: .,Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, China
| | - H Pei
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Institute of Life Sciences in Space, Medical College of Soochow University, Suzhou 215123, China; e-mail: .,Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, China
| | - H Chen
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Institute of Life Sciences in Space, Medical College of Soochow University, Suzhou 215123, China; e-mail: .,Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, China
| | - T K Hei
- Columbia University Medical Center, USA
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Haslam I, Zhou G, Xie G, Teng X, Ao X, Yan Z, Smart E, Rutkowski D, Wierzbicka J, Zhou Y, Huang Z, Zhang Y, Farjo N, Farjo B, Paus R, Yue Z. LB968 Inhibition of sonic hedgehog signalling via MAPK activation controls chemotherapy-induced alopecia. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.05.066] [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: 10/24/2022]
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46
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Zhou G, Mein R, Game D, Rottenberg G, Bultitude M, Thomas K. Defining the inheritance of cystinuria: Is it always autosomal recessive? EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33297-3] [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: 11/28/2022] Open
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47
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Wang T, Xu YQ, Yuan YX, Xu PW, Zhang C, Li F, Wang LN, Yin C, Zhang L, Cai XC, Zhu CJ, Xu JR, Liang BQ, Schaul S, Xie PP, Yue D, Liao ZR, Yu LL, Luo L, Zhou G, Yang JP, He ZH, Du M, Zhou YP, Deng BC, Wang SB, Gao P, Zhu XT, Xi QY, Zhang YL, Shu G, Jiang QY. Succinate induces skeletal muscle fiber remodeling via SUCNR1 signaling. EMBO Rep 2020; 21:e50461. [PMID: 32374525 DOI: 10.15252/embr.202050461] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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48
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Zhou G, Chang W, Zhou X, Chen Y, Dai F, Anwar A, Yu X. Nanofibrous Nerve Conduits with Nerve Growth Factors and Bone Marrow Stromal Cells Pre-Cultured in Bioreactors for Peripheral Nerve Regeneration. ACS Appl Mater Interfaces 2020; 12:16168-16177. [PMID: 32182427 DOI: 10.1021/acsami.0c04191] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Peripheral nerve injury (PNI) was the leading cause of permanent dysfunction in movement and sensation. Synthesized nerve guide conduits (NGCs) with Schwann Cells (SCs) can help peripheral nerve regeneration. However, poor accessibility of SCs and lack of full coverage of seeded cells on NGCs can lead to failure of nerve regeneration across long gaps and full functional recovery. To overcome these limitations, bone marrow stromal cells (BMSCs) and a novel culture method were proposed in the current study. BMSCs were harvested and seeded on a never growth factor (NGF)-loaded PCL nanofibrous NGCs and cultured with a rotary cell culture system (RCCS) before implantation. The NGCs were tested in vitro with PC-12 cells to validate the bioactivity of released NGF and to access its ability to promote neurite extension. Also, the NGCs were tested in vivo with rat sciatic nerve model to exam its potential in bridging the long gap (15 mm segmental defect). The efficacy of the NGCs was investigated based on the results of the functional test, electrophysiology test, muscle atrophy, and histological analysis. The results of in vitro PC-12 cell study confirmed the bioactivity of released NGF and showed a significant increase in the neurite extension with the help of PEG-diamine and BSA. These results showed that the novel loading method could preserve the bioactivity of growth factors and achieve a sustained release in vitro. Besides, the results of the in vivo study exhibited a significant increase with the combination of all additives. These results showed that with the help of NGF and RCCS, the NGCs with the seeded BMSCs could enhance peripheral nerve regeneration across long nerve injury gaps.
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Affiliation(s)
- Gan Zhou
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Wei Chang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Xiaqing Zhou
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Yifan Chen
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Futao Dai
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Aneela Anwar
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Xiaojun Yu
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
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49
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Wang L, Zuo X, Zhao W, Zhou G, Luo L, Yang K, Shu G, Wang S, Gao P, Zhu X, Jiang Q, Wang L. Effect of maternal dietary supplementation with phytosterol esters on muscle development of broiler offspring. Acta Biochim Pol 2020; 67:135-141. [PMID: 32191410 DOI: 10.18388/abp.2020_2884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/12/2020] [Indexed: 11/10/2022]
Abstract
Recently, embryo muscle development, which is crucial for postnatal skeletal muscle growth, has been investigated widely. Nutrients in ovo were suggested to be critical in embryo muscle development since the chick growth mostly relies on nutrients in eggs at the early developmental stage. Phytosterol esters (PE), which are derived from the reactions between phytosterols and fatty acids, were demonstrated to have important effects on lipid and cholesterol metabolism regulation. In order to reveal the effect of maternal lipid metabolism on the deposition of nutrients in eggs and the development of embryonic muscles, broiler hens were fed with a diet supplemented with 5% PE or control diet. Lipid deposition in eggs and growth of the hatched chicks were studied. We found that PE increased bile acid (BA) deposition in the eggs and serum of hens (p=0.02 and p<0.01, respectively), altered insulin and glucose level differentially in female and male offspring, and promoted body weight (p=0.02 for male and female on day 49), muscle fiber density (p=0.02 for female on day 49), and myogenin and myogenic determination factor (myoD) expression (p=0.03 and p=0.02 on day 49) by the activation of BA receptors in female, but not in male, offspring. Our study determined for the first time that PE promoted muscle development of chicks hatching from eggs laid by the hens, through regulating bile acid (BA) deposition and this may be attributed to the activation of BA receptors.
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Affiliation(s)
- Leshan Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Xudong Zuo
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of Chinam
| | - Weijie Zhao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Gan Zhou
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Lv Luo
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Kelin Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Gang Shu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Songbo Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Ping Gao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Xiaotong Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Qingyan Jiang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China; 2National Engineering Research Center for the Breeding Swine Industry, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
| | - Lina Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510640, Guangdong, People's Republic of China
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Chang W, Shah MB, Zhou G, Walsh K, Rudraiah S, Kumbar SG, Yu X. Polymeric nanofibrous nerve conduits coupled with laminin for peripheral nerve regeneration. ACTA ACUST UNITED AC 2020; 15:035003. [PMID: 31918424 DOI: 10.1088/1748-605x/ab6994] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Artificial nerve guidance conduits (NGCs) are being investigated as an alternative to autografts, since autografts are limited in supply. A polycaprolactone (PCL)-based spiral NGC with crosslinked laminin on aligned nanofibers was evaluated in vivo post a successful in vitro assessment. PC-12 cell assays confirmed that the aligned nanofibers functionalized with laminin were able to guide and enhance neurite outgrowth. In the rodent model, the data demonstrated that axons were able to regenerate across the critical nerve gap, when laminin was present. Without laminin, the spiral NGC with aligned nanofibers group resulted in a random cluster of extracellular matrix tissue following injuries. The reversed autograft group performed best, showing the most substantial improvement based on nerve histological assessment and gastrocnemius muscle measurement. Nevertheless, the recovery time was too short to obtain meaningful data for the motor functional assessments. A full motor recovery may take up to years. An interesting observation was noted in the crosslinked laminin group. Numerous new blood capillary-like structures were found around the regenerated nerve. Owing to recent studies, we hypothesized that new blood vessel formation could be one of the key factors to increase the successful rate of nerve regeneration in the current study. Overall, these findings indicated that the incorporation of laminin into polymeric nerve conduits is a promising strategy for enhancing peripheral nerve regeneration. However, the best combination of contact-guidance cues, haptotactic cues, and chemotactic cues have yet to be realized. The natural sequence of nerve regeneration should be studied more in-depth before modulating any strategies.
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Affiliation(s)
- Wei Chang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States of America
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