1
|
Zhang X, Yelle DJ, Kitin P, Tong G, Zhu JY. Producing Cellulose Microfibrils at a High Solid Content with and without Mechanical or Enzymatic Pretreatment. Biomacromolecules 2024; 25:2509-2519. [PMID: 38514378 DOI: 10.1021/acs.biomac.3c01457] [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] [Indexed: 03/23/2024]
Abstract
This study conducted a detailed evaluation of the feasibility of producing cellulose microfibrils (CMF) from a kraft-bleached hardwood pulp at high solid contents with and without pretreatments. CMFs produced by planetary ball milling at solid contents 17 and 28% were compared with those from 1 to 5% under the same milling conditions. Fiber pretreatments using a commercial endoglucanase and mechanical refining using a laboratory PFI mill were also applied before ball milling at a solid content of 28%. Two mechanisms of fiber fibrillation were identified from the results obtained: (i) ball and fiber/fibril interactions─the primary mechanism and (ii) interfiber/fibril frictional and tensional interactions─the secondary mechanism. The secondary mechanism plays an important role only in early-stage fibrillation and became less important as fibrillation proceeded in the later stage toward nanofibrillation. Improving fiber dispersion at lower solid content facilitated fibrillation. Endoglucanase pretreatment substantially shortened fibers to result in a "pulverized-like" CMF with short fibrils at an extended milling time. Mechanical refining of fibers facilitated fibrillation to result in CMFs with a morphology similar to that from runs without any fiber pretreatment but for a much shorter milling time. Both CMF water retention value (WRV) measurements and CMF suspension sedimentation experiments showed results consistent with imaging observations. The insights gained through this study provide relevant information with commercial significance regarding CMF production at high solids, which is not currently available in the literature.
Collapse
Affiliation(s)
- Xiaoxue Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
- USDA Forest Products Laboratory, Madison, Wisconsin 53726, United States
| | - Daniel J Yelle
- USDA Forest Products Laboratory, Madison, Wisconsin 53726, United States
| | - Peter Kitin
- USDA Forest Products Laboratory, Madison, Wisconsin 53726, United States
| | - Guolin Tong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
| | - J Y Zhu
- USDA Forest Products Laboratory, Madison, Wisconsin 53726, United States
| |
Collapse
|
2
|
Liu L, Hong Y, Ma C, Zhang F, Li Q, Li B, He H, Zhu J, Wang H, Chen L. Circular RNA Gtdc1 Protects Against Offspring Osteoarthritis Induced by Prenatal Prednisone Exposure by Regulating SRSF1-Fn1 Signaling. Adv Sci (Weinh) 2024:e2307442. [PMID: 38520084 DOI: 10.1002/advs.202307442] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/21/2024] [Indexed: 03/25/2024]
Abstract
Chondrodysplasia is closely associated with low birth weight and increased susceptibility to osteoarthritis in adulthood. Prenatal prednisone exposure (PPE) can cause low birth weight; however, its effect on offspring cartilage development remains unexplored. Herein, rats are administered clinical doses of prednisone intragastrically on gestational days (GDs) 0-20 and underwent long-distance running during postnatal weeks (PWs) 24-28. Knee cartilage is assayed for quality and related index changes on GD20, PW12, and PW28. In vitro experiments are performed to elucidate the mechanism. PPE decreased cartilage proliferation and matrix synthesis, causing offspring chondrodysplasia. Following long-distance running, the PPE group exhibited more typical osteoarthritis-like changes. Molecular analysis revealed that PPE caused cartilage circRNomics imbalance in which circGtdc1 decreased most significantly and persisted postnatally. Mechanistically, prednisolone reduced circGtdc1 expression and binding with Srsf1 to promote degradation of Srsf1 via K48-linked polyubiquitination. This further inhibited the formation of EDA/B+Fn1 and activation of PI3K/AKT and TGFβ pathways, reducing chondrocyte proliferation and matrix synthesis. Finally, intra-articular injection of offspring with AAV-circGtdc1 ameliorated PPE-induced chondrodysplasia, but this effect is reversed by Srsf1 knockout. Altogether, this study confirms that PPE causes chondrodysplasia and susceptibility to osteoarthritis by altering the circGtdc1-Srsf1-Fn1 axis; in vivo, overexpression of circGtdc1 can represent an effective intervention target for ameliorating PPE-induced chondrodysplasia.
Collapse
Affiliation(s)
- Liang Liu
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Yuntian Hong
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Chi Ma
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Fan Zhang
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Qingxian Li
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Bin Li
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China
| | - Hangyuan He
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Jiayong Zhu
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Hui Wang
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Liaobin Chen
- Department of Orthopedic Surgery, Joint Disease Research Center of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China
| |
Collapse
|
3
|
Bian RH, Huang SX, Zhu JY, Wu J, Fan KW, Hu ZC, Xu YB, Yu QH, Zhang T, Li XY, Chen SZ. [Establishment of a topographic map assessment system for facial and cervical wounds and scars of burn patients based on the Delphi method]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:1115-1121. [PMID: 38129297 DOI: 10.3760/cma.j.cn501225-20230905-00075] [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: 12/23/2023]
Abstract
Objective: To construct a targeted and accurate evaluation system for facial and cervical wounds and scars of burn patients. Methods: The method combining literature analysis and survey research was adopted, and the basic principles of item system construction were followed. From June to August 2020, based on the aesthetic standards of facial and cervical plastic surgery, the topographic map assessment system for facial and cervical wounds and scars of burn patients was preliminarily formed, focusing on the assessment of wounds and scars in the necks and faces of patients after burns. In September 2020, 38 experts in the relevant fields were consulted in advance and the questionnaire was revised according to the experts' opinions. From December 2020 to March 2021, the Delphi method was applied to conduct inquiry by correspondence with 35 experts in relevant fields from Guangzhou, Shenzhen, Shanghai, Beijing, and other cities, who met the inclusion criteria, and the items were screened and established. The effective recovery rate of inquiry questionnaire was calculated to determine the level of enthusiasm of experts, the average authority coefficient of all items was calculated to determine the level of expert authority, the average importance expert score, the average coefficient of variation, and the average full score rate of all the third-level items were calculated to determine the concentration of expert opinions, the average coefficients of variation and Kendall's harmony coefficients of the importance, sensitivity, and operability expert scores of all the third-level items were calculated to determine the degree of coordination of expert opinions. The Kendall's harmony coefficients for the importance, sensitivity, and operability expert scores of all the third-level items were statistically analyzed with chi-square test. Results: Among the 35 experts consulted by Delphi method, mainly were male, aged (48±10) years, with 8-38 years of working experience, mainly with associate senior titles and above, all with a bachelor's degree or above education background, and of whom 11 were burn experts, 7 were wound repair experts, 4 were plastic surgery experts, and 13 were rehabilitation medicine experts. Finally, a topographic map assessment system for facial and cervical wounds and scars of burn patients was formed, including 4 first-level items, 21 second-level items, 40 third-level items, and 1 mask. The effective recovery rate of inquiry questionnaire was 100% (35/35). The average authority coefficient of all items was 0.89. The average importance expert score was 4.67, the average coefficient of variation of importance expert score was 0.01, and the average full score rate of all the third-level items was 86.3%. The average coefficients of variation of the importance, sensitivity, and operability expert scores of all the third-level items were 0.01, 0.01, and 0.02, respectively. The Kendall's harmony coefficients for the importance, sensitivity, and operability expert scores of all the third-level items were statistically significant (with χ2 values of 1 201.53, 745.67, and 707.07, respectively, P<0.05). Conclusions: The established topographic map assessment system for facial and cervical wounds and scars of burn patients has high scientificity and reliability, which can be used for the evaluation of facial and neck wounds or scars in burn patients.
Collapse
Affiliation(s)
- R H Bian
- Department of Rehabilitation Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - S X Huang
- Department of Burns and Wound Repair Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - J Y Zhu
- Department of Burns and Wound Repair Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - J Wu
- Department of Burns and Plastic Surgery, the First Affiliated Hospital, Shenzhen University, Shenzhen 518035, China
| | - K W Fan
- Department of Burns and Plastic Surgery, the First Affiliated Hospital, Shenzhen University, Shenzhen 518035, China
| | - Z C Hu
- Department of Burns and Wound Repair Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Y B Xu
- Department of Burns and Wound Repair Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Q H Yu
- Department of Rehabilitation Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - T Zhang
- Department of Rehabilitation Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - X Y Li
- Department of Rehabilitation Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - S Z Chen
- Department of Rehabilitation Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| |
Collapse
|
4
|
Tao X, Zhu JY, Xu ZQ, Wu QJ, Jin D, Zhang Y, Luo Y, Huang WX. [A case analysis of multidisciplinary treatment for a patient with esthetic defects of upper anterior teeth with the aid of digital technology]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:1296-1299. [PMID: 38061873 DOI: 10.3760/cma.j.cn112144-20230816-00085] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Affiliation(s)
- X Tao
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - J Y Zhu
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Z Q Xu
- Department of Digital Clinical Department, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Q J Wu
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - D Jin
- Department of Digital Clinical Department, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Y Zhang
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Y Luo
- Department of Digital Clinical Department, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - W X Huang
- Department of Periodontics, Stomatological Hospital of Xiamen Medical College, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| |
Collapse
|
5
|
Meng T, Ding Y, Liu Y, Xu L, Mao Y, Gelfond J, Li S, Li Z, Salipante PF, Kim H, Zhu JY, Pan X, Hu L. In Situ Lignin Adhesion for High-Performance Bamboo Composites. Nano Lett 2023; 23:8411-8418. [PMID: 37677149 DOI: 10.1021/acs.nanolett.3c01497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Bamboo composite is an attractive candidate for structural materials in applications such as construction, the automotive industry, and logistics. However, its development has been hindered due to the use of harmful petroleum-derived synthetic adhesives or low-bonding biobased adhesives. Herein, we report a novel bioadhesion strategy based on in situ lignin bonding that can process natural bamboo into a scalable and high-performance composite. In this process, lignin bonds the cellulose fibrils into a strong network via a superstrong adhesive interface formed by hydrogen bonding and nanoscale entanglement. The resulting in situ glued-bamboo (glubam) composite exhibits a record-high shear strength of ∼4.4 MPa and a tensile strength of ∼300 MPa. This in situ lignin adhesion strategy is facile, highly scalable, and cost-effective, suggesting a promising route for fabricating strong and sustainable structural bamboo composites that sequester carbon and reduce our dependence on petrochemical-based adhesives.
Collapse
Affiliation(s)
- Taotao Meng
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Yu Ding
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Yu Liu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Lin Xu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Yimin Mao
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Julia Gelfond
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
- Montgomery Blair High School, Silver Spring, Maryland 20901, United States
| | - Shuke Li
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Zhihan Li
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Paul F Salipante
- Polymers and Complex Fluids Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Hoon Kim
- U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, Wisconsin 53726, United States
| | - J Y Zhu
- U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, Wisconsin 53726, United States
| | - Xuejun Pan
- Department of Biological Systems Engineering, University of Wisconsin─Madison, Madison, Wisconsin 53706, United States
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| |
Collapse
|
6
|
Zhang X, Kitin P, Agarwal UP, Gleisner R, Zhu JY. Characterizing lignin-containing microfibrillated cellulose based on water interactions, fibril properties, and imaging. Carbohydr Polym 2023; 316:120996. [PMID: 37321718 DOI: 10.1016/j.carbpol.2023.120996] [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: 02/16/2023] [Revised: 04/25/2023] [Accepted: 05/05/2023] [Indexed: 06/17/2023]
Abstract
Morphological characterization of microfibrillated cellulose (MFC) is critically important to process control in production and product specification for trade and product development yet is extremely difficult. This study evaluated several indirect methods for relative comparison of the morphology of lignin-free and lignin-containing ((L)MFCs). The (L)MFCs studied were produced using a commercial grinder through different passes from a dry lap bleached kraft eucalyptus pulp, a virgin mixed (maple and birch) unbleached kraft hardwood pulp, and two virgin-unbleached kraft softwood (loblolly pine) pulps with one bleachable grade (low lignin content) and one liner grade (high lignin content). The (L)MFCs were indirectly characterized using techniques based on water interactions, i.e., water retention value (WRV) and fibril suspension stability, as well as fibril properties, i.e., cellulose crystallinity and fine content. Optical microscopy and scanning electron microscopy were also applied to directly visualize the (L)MFCs to provide some objective measure of the morphology of the (L)MFCs. The results indicate that most measures such as WRV, cellulose crystallinity, fine content cannot be used to compare (L)MFCs from different pulp fibers. Measures based on water interactions such as (L)MFC WRV and suspension stability appeared can provide some degree of indirect assessment. This study provided the utilities and limits of these indirect methods for relative comparison of the morphologies of (L)MFCs.
Collapse
Affiliation(s)
- Xiaoxue Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology, Nanjing Forestry University, Nanjing 210037, China; USDA Forest Products Laboratory, Madison 53726, USA
| | - Peter Kitin
- USDA Forest Products Laboratory, Madison 53726, USA
| | | | | | - J Y Zhu
- USDA Forest Products Laboratory, Madison 53726, USA.
| |
Collapse
|
7
|
Wu Z, Zhu J, Wen Y, Lei P, Xie J, Shi H, Wu R, Lou X, Hu Y. Hmga1-overexpressing lentivirus protects against osteoporosis by activating the Wnt/β-catenin pathway in the osteogenic differentiation of BMSCs. FASEB J 2023; 37:e22987. [PMID: 37555233 DOI: 10.1096/fj.202300488r] [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: 03/14/2023] [Revised: 04/26/2023] [Accepted: 05/09/2023] [Indexed: 08/10/2023]
Abstract
Postmenopausal osteoporosis is associated with bone formation inhibition mediated by the impaired osteogenic differentiation potential of bone marrow mesenchymal stem cells (BMSCs). However, identifying and confirming the essential genes in the osteogenic differentiation of BMSCs and osteoporosis remain challenging. The study aimed at revealing the key gene that regulated osteogenic differentiation of BMSCs and led to osteoporosis, thus exploring its therapeutic effect in osteoporosis. In the present study, six essential genes related to the osteogenic differentiation of BMSCs and osteoporosis were identified, namely, fibrillin 2 (Fbn2), leucine-rich repeat-containing 17 (Lrrc17), heat shock protein b7 (Hspb7), high mobility group AT-hook 1 (Hmga1), nexilin F-actin-binding protein (Nexn), and endothelial cell-specific molecule 1 (Esm1). Furthermore, the in vivo and in vitro experiments showed that Hmga1 expression was increased during the osteogenic differentiation of rat BMSCs, while Hmga1 expression was decreased in the bone tissue of ovariectomized (OVX) rats. Moreover, the expression of osteogenic differentiation-related genes, the activity of alkaline phosphatase (ALP), and the number of mineralized nodules were increased after Hmga1 overexpression, which was partially reversed by a Wnt signaling inhibitor (DKK1). In addition, after injecting Hmga1-overexpressing lentivirus into the bone marrow cavity of OVX rats, the bone loss, and osteogenic differentiation inhibition of BMSCs in OVX rats were partially reversed, while osteoclast differentiation promotion of BMSCs in OVX rats was unaffected. Taken together, the present study confirms that Hmga1 prevents OVX-induced bone loss by the Wnt signaling pathway and reveals that Hmga1 is a potential gene therapeutic target for postmenopausal osteoporosis.
Collapse
Affiliation(s)
- Zhixin Wu
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jiayong Zhu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yinxian Wen
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Pengfei Lei
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Jie Xie
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Haifei Shi
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ronghuan Wu
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xianfeng Lou
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yihe Hu
- Department of Orthopedic Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
8
|
Xiao H, Wu Z, Jiang T, Zhu J, Zhou S, Xie X, Wang H, Chen L. Inhibition of miR-6215 rescued low subchondral bone mass caused by maternal exposure to dexamethasone in female offspring rats. Biochem Pharmacol 2023; 215:115722. [PMID: 37524209 DOI: 10.1016/j.bcp.2023.115722] [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: 06/09/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/02/2023]
Abstract
Osteoporotic osteoarthritis is primarily associated with low subchondral bone mass. However, the mechanisms and therapeutic targets of osteoporotic osteoarthritis caused by prenatal dexamethasone exposure (PDE) in offspring remain unclear. In this study, pregnant Wistar rats were injected with dexamethasone to obtain bone tissue from fetal and postnatal rat offspring for analysis. Bone marrow mesenchymal stem cells (BMSCs) were isolated in vitro to elucidate the underlying molecular mechanisms. We determined in vivo that PDE reduced subchondral bone mass in adult female rat offspring, which originated from dysplasia of the subchondral bone. PDE led to a continuous increase in miR-6215 expression, accompanied by a decrease in FERM domain-containing protein 6 (FRMD6) expression. In vitro, dexamethasone upregulated miR-6215 expression through the glucocorticoid receptor, thereby inhibiting FRMD6 expression, promoting the translocation of yes-associated protein 1 (YAP1) into the nucleus of BMSCs, and downregulating downstream osteogenic marker genes. Finally, the rAAV-miR-6215 inhibitor rescued the low subchondral bone mass and osteoarthritis susceptibility caused by PDE in rat offspring. In conclusion, increased expression of miR-6215 mediates low subchondral bone mass caused by PDE through FRMD6/YAP1 signaling. Therefore, miR-6215 is a promising therapeutic target for PDE-induced low subchondral bone mass in offspring.
Collapse
Affiliation(s)
- Hao Xiao
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China.
| | - Zhixin Wu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Tao Jiang
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Jiayong Zhu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Siqi Zhou
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Xingkui Xie
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Hui Wang
- Department of Pharmacology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Liaobin Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China.
| |
Collapse
|
9
|
Kuang TY, Yin SQ, Dai WH, Luo L, Chen T, Liang XH, Wang RX, Liang HP, Zhu JY. [Effects of enhancing the expression of aryl hydrocarbon receptor in post-traumatic mice macrophages on the inflammatory cytokine level and bactericidal ability]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:633-640. [PMID: 37805692 DOI: 10.3760/cma.j.cn501225-20230210-00040] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Objective: To explore the expression pattern of aryl hydrocarbon receptor (AhR) in mice peritoneal macrophages (PMs) after major trauma and analyze the effects of enhanced AhR expression on the inflammatory cytokine level and bactericidal ability after trauma. Methods: The experimental study method was used. Forty 6-8-week-old male C57BL/6J mice (the same mouse age, sex, and strain below) were divided into control group, post trauma hour (PTH) 2 group, PTH 6 group, and PTH 12 group according to the random number table (the same grouping method below), with 10 mice in each group. Mice in the latter 3 groups were constructed as severe trauma model with fracture+blood loss, while mice in control group were left untreated. The primary PMs (the same cells below) were extracted from the mice in control group, PTH 2 group, PTH 6 group, and PTH 12 group when uninjured or at PTH 2, 6, and 12, respectively. Then the protein and mRNA expressions of AhR were detected by Western blotting and real-time fluorescence quantitative reverse transcription polymerase chain reaction, respectively, and the gene expressions of AhR signaling pathway related molecules were analyzed by transcriptome sequencing. Twenty mice were divided into control group and PTH 6 group, with 10 mice in each group, and the PMs were extracted. The level of ubiquitin of AhR was detected by immunoprecipitation. Twelve mice were divided into dimethyl sulfoxide (DMSO) alone group, PTH 6+DMSO group, MG-132 alone group, and PTH 6+MG-132 group, with 3 mice in each group. After the corresponding treatment, PMs were extracted, and the protein expression of AhR was detected by Western blotting. Twenty mice were constructed as PTH 6 model. Then, the PMs were extracted and divided into empty negative control adenovirus (Ad-NC) group and AhR overexpression adenovirus (Ad-AhR) group. The protein expression of AhR was detected by Western blotting at 36 h after some PMs were transfected with the corresponding adenovirus. The rest cells in Ad-NC group were divided into Ad-NC alone group and Ad-NC+endotoxin/lipopolysaccharide (LPS) group, and the rest cells in Ad-AhR group were divided into Ad-AhR alone group and Ad-AhR+LPS group. The expressions of interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) in the cell supernatant were detected by enzyme-linked immunosorbent assay at 12 h after the corresponding treatment (n=6). Twenty mice were obtained to extract PMs. The cells were divided into control+Ad-NC group, PTH 6+Ad-NC group, control+Ad-AhR group, and PTH 6+Ad-AhR group, and the intracellular bacterial load was detected by plate spread method after the corresponding treatment (n=6). Data were statistically analyzed with one-way analysis of variance, least significant difference test, analysis of variance for factorial design, and independent sample t test. Results: Compared with 1.16±0.28 of control group, the protein expressions of AhR in PMs in PTH 2 group (0.59±0.14), PTH 6 group (0.72±0.16), and PTH 12 group (0.71±0.17) were all significantly decreased (P<0.05). The overall comparison of the difference of AhR mRNA expression in PMs among control group, PTH 2 group, PTH 6 group, and PTH 12 group showed no statistical significance (P>0.05). The AhR signaling pathway related molecules included AhR, AhR inhibitor, cytochrome P450 family member 1b1, cytochrome P450 family member 11a1, heat shock protein 90, aryl hydrocarbon receptor-interaction protein, and heat shock protein 70 interaction protein. The heat shock protein 90 expression of PMs in PTH 2 group was higher than that in control group, while the expressions of other molecules did not change significantly after trauma. Compared with that in control group, the level of ubiquitin of AhR in PMs in PTH 6 group was increased. Compared with that in DMSO alone group, the protein expression of AhR in PMs in PTH 6+DMSO group was decreased, while that in PMs in MG-132 alone group had no significant change. Compared with that in PTH 6+DMSO group, the protein expression of AhR in PMs in PTH 6+MG-132 group was up-regulated. At transfection hour 36, compared with that in Ad-NC group, the protein expression of AhR in PMs in Ad-AhR group was increased. At treatment hour 12, compared with those in Ad-NC+LPS group, the expressions of IL-6 and TNF-α in PM supernatant of Ad-AhR+LPS group were significantly decreased (with t values of 4.80 and 3.82, respectively, P<0.05). The number of intracellular bacteria of 1×106 PMs in control+Ad-NC group, PTH 6+Ad-NC group, control+Ad-AhR group, and PTH 6+Ad-AhR group was (3.0±1.8), (41.8±10.2), (1.8±1.2), and (24.2±6.3) colony forming unit, respectively. Compared with that in PTH 6+Ad-NC group, the number of intracellular bacteria of PMs in PTH 6+Ad-AhR group was significantly decreased (t=3.61, P<0.05). Conclusions: Ubiquitin degradation of AhR in PMs of mice after major trauma results in decreased protein expression of AhR. Increasing the expression of AhR in post-traumatic macrophages can reduce the expressions of LPS-induced inflammatory cytokines IL-6 and TNF-α, and improve the bactericidal ability of macrophages after trauma.
Collapse
Affiliation(s)
- T Y Kuang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - S Q Yin
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - W H Dai
- Emergency Department of the Second Affiliated Hospital of Hainan Medical University, the Emergency and Critical Care Clinical Medicine Research Center of Hainan, Haikou 570216, China
| | - L Luo
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - T Chen
- The 17th Team of Cadet Brigade, College of Basic Medical Sciences, Army Medical University, Chongqing 400038, China
| | - X H Liang
- The 17th Team of Cadet Brigade, College of Basic Medical Sciences, Army Medical University, Chongqing 400038, China
| | - R X Wang
- Emergency Department of the Second Affiliated Hospital of Hainan Medical University, the Emergency and Critical Care Clinical Medicine Research Center of Hainan, Haikou 570216, China
| | - H P Liang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - J Y Zhu
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Chongqing 400042, China
| |
Collapse
|
10
|
Shi H, Li B, Zhang D, Han H, He H, Zhu J, Wang H, Chen L. Autophagy inhibition mediated by intrauterine miR-1912-3p/CTSD programming participated in the susceptibility to osteoarthritis induced by prenatal dexamethasone exposure in male adult offspring rats. FASEB J 2023; 37:e23011. [PMID: 37249374 DOI: 10.1096/fj.202300022rr] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 05/16/2023] [Accepted: 05/19/2023] [Indexed: 05/31/2023]
Abstract
Autophagy inhibition is known to be involved in the development of adult osteoarthritis. Dexamethasone, as a synthetic glucocorticoid, is widely used for premature delivery and related pregnancy diseases in clinics. We have previously shown that prenatal dexamethasone exposure (PDE) was associated with increased susceptibility to postnatal osteoarthritis in offspring. However, whether the occurrence of fetal-originated adult osteoarthritis induced by PDE is related to autophagy remains unclear. In this study, we first found that PDE could increase the mRNA and protein expression of cartilage matrix-degrading enzymes (MMP3, MMP13, and ADAMTS5) and decrease the cartilage matrix contents in adult offspring, and the in vitro results suggested that this might be related to the autophagy inhibition of chondrocytes. Further, we demonstrated a persistent autophagy inhibition with autolysosome accumulation, low expression of cathepsin D (CTSD), increased H3K9ac level, and expression of miR-1912-3p in the cartilage of PDE offspring from fetus to adulthood. In vitro experiments showed that dexamethasone inhibited autophagy flux and CTSD expression in fetal chondrocytes, while overexpression of CTSD could alleviate the inhibition of autophagic flux induced by dexamethasone. Finally, we confirmed that dexamethasone increased the H3K9ac level and expression of miR-1912-3p through activation of the glucocorticoid receptor (GR), resulting in the decreased expression of CTSD and inhibition of autophagy flux in fetal chondrocytes. In conclusion, intrauterine miR-1912-3p/CTSD programming-mediated autophagy inhibition promoted the susceptibility to osteoarthritis in PDE adult offspring rats. This study provides new ideas for exploring early prevention and therapeutic targets in fetal-originated osteoarthritis.
Collapse
Affiliation(s)
- Huasong Shi
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Bin Li
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Dingmei Zhang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, China
| | - Hui Han
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hangyuan He
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jiayong Zhu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hui Wang
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, China
| | - Liaobin Chen
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| |
Collapse
|
11
|
Ni Q, Chen H, Li B, He H, Shi H, Zhu J, Wang H, Chen L. Corrigendum to "miR-200b-3p/ERG/PTHrP axis mediates the inhibitory effect of ethanol on the differentiation of fetal cartilage into articular cartilage" [Chem. Biol. Interact. 368 (2022) 110201]. Chem Biol Interact 2023; 378:110481. [PMID: 37094432 DOI: 10.1016/j.cbi.2023.110481] [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: 04/26/2023]
Affiliation(s)
- Qubo Ni
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Haitao Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Bin Li
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Hangyuan He
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Huasong Shi
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Jiayong Zhu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Hui Wang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan, 430071, China.
| | - Liaobin Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan, 430071, China.
| |
Collapse
|
12
|
Zhu JY, Zhang X, Huang CH, Wang L, Chen R, Ding XL. [Evaluation of thermal environment and human thermal comfort in 8 types of public places from 2019 to 2021]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:189-197. [PMID: 37006144 DOI: 10.3760/cma.j.cn121094-20220428-00229] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Objective: To evaluate the thermal environment of different types of public places and the thermal comfort of employees, so as to provide scientific basis for the establishment of microclimate standards and health supervision requirements. Methods: From June 2019 to December 2021, 50 public places (178 times) of 8 categories in Wuxi were selected, including hotels, swimming pools (gymnasiums), bathing places, shopping malls (supermarkets), barber shops, beauty shops, waiting rooms (bus station) and gyms. In summer and winter, microclimate indicators such as temperature and wind speed were measured in all kinds of places, combined with the work attire and physical activity of employees in the places. Fanger thermal comfort equation and center for the built environment (CBE) thermal comfort calculation tool were used to evaluate the predicted mean vote (PMV), predicted percent dissatisfied (PPD) and standard effective temperature (SET) according to the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 55-2020. The modification effects of seasonal and temperature control conditions on thermal comfort were analyzed. The consistency of GB 37488-2019 "Hygienic Indicators and Limits in Public Places" and ASHRAE 55-2020 evaluation results on thermal environment was compared. Results: The thermal sensation of hotel, barber shop staff and the gym front-desk staff were moderate, while the thermal sensation of swimming place lifeguard, bathing place cleaning staff and gym trainer were slightly warm in summer and winter. Waiting room (bus station) cleaning and working staff, shopping mall staff felt slightly warm in summer and moderate in winter. Service staff in bathing places felt slightly warm in winter, while staff in beauty salons felt slightly cool in winter. The thermal comfort compliance of hotel cleaning staff and shopping mall staff in summer was lower than that in winter (χ(2)=7.01, 7.22, P=0.008, 0.007). The thermal comfort compliance of shopping mall staff in the condition of air conditioning off was higher than that in the condition of air conditioning on (χ(2)=7.01, P=0.008). The SET values of front-desk staff in hotels with different health supervision levels were significantly different (F=3.30, P=0.024). The PPD value and SET value of the front-desk staff, and the PPD value of cleaning staff of hotels above three stars were lower than those of hotels below three stars (P<0.05). The thermal comfort compliance of front-desk staff and cleaning staff in hotels above three stars was higher than that in hotels below three stars (χ(2)=8.33, 8.09, P=0.016, 0.018). The consistency of the two criteria was highest among waiting room (bus station) staff (100.0%, 1/1) and lowest among gym front-desk staff (0%, 0/2) and waiting room (bus station) cleaning staff (0%, 0/1) . Conclusion: There are different degrees of thermal discomfort in different seasons, under the condition of air conditioning and health supervision, and the microclimate indicators can not fully reflect the thermal comfort of human body. The health supervision of microclimate should be strengthened, the applicability of health standard limit value should be evaluated in many aspects, and the thermal comfort of occupational group should be improved.
Collapse
Affiliation(s)
- J Y Zhu
- Department of Environmental Health, Wuxi Center for Disease Control and Prevention (Wuxi Center for Disease Control and Prevention Affiliated to Nanjing Medical University), Wuxi 214023, China
| | - X Zhang
- Department of Environmental Health, Wuxi Center for Disease Control and Prevention (Wuxi Center for Disease Control and Prevention Affiliated to Nanjing Medical University), Wuxi 214023, China
| | - C H Huang
- Department of Environmental Health, Wuxi Center for Disease Control and Prevention (Wuxi Center for Disease Control and Prevention Affiliated to Nanjing Medical University), Wuxi 214023, China
| | - L Wang
- Department of Environmental Health, Wuxi Center for Disease Control and Prevention (Wuxi Center for Disease Control and Prevention Affiliated to Nanjing Medical University), Wuxi 214023, China
| | - R Chen
- Department of Environmental Health, Wuxi Center for Disease Control and Prevention (Wuxi Center for Disease Control and Prevention Affiliated to Nanjing Medical University), Wuxi 214023, China
| | - X L Ding
- Department of Environmental Health, Wuxi Center for Disease Control and Prevention (Wuxi Center for Disease Control and Prevention Affiliated to Nanjing Medical University), Wuxi 214023, China
| |
Collapse
|
13
|
Ding Y, Pang Z, Lan K, Yao Y, Panzarasa G, Xu L, Lo Ricco M, Rammer DR, Zhu JY, Hu M, Pan X, Li T, Burgert I, Hu L. Emerging Engineered Wood for Building Applications. Chem Rev 2023; 123:1843-1888. [PMID: 36260771 DOI: 10.1021/acs.chemrev.2c00450] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The building sector, including building operations and materials, was responsible for the emission of ∼11.9 gigatons of global energy-related CO2 in 2020, accounting for 37% of the total CO2 emissions, the largest share among different sectors. Lowering the carbon footprint of buildings requires the development of carbon-storage materials as well as novel designs that could enable multifunctional components to achieve widespread applications. Wood is one of the most abundant biomaterials on Earth and has been used for construction historically. Recent research breakthroughs on advanced engineered wood products epitomize this material's tremendous yet largely untapped potential for addressing global sustainability challenges. In this review, we explore recent developments in chemically modified wood that will produce a new generation of engineered wood products for building applications. Traditionally, engineered wood products have primarily had a structural purpose, but this review broadens the classification to encompass more aspects of building performance. We begin by providing multiscale design principles of wood products from a computational point of view, followed by discussion of the chemical modifications and structural engineering methods used to modify wood in terms of its mechanical, thermal, optical, and energy-related performance. Additionally, we explore life cycle assessment and techno-economic analysis tools for guiding future research toward environmentally friendly and economically feasible directions for engineered wood products. Finally, this review highlights the current challenges and perspectives on future directions in this research field. By leveraging these new wood-based technologies and analysis tools for the fabrication of carbon-storage materials, it is possible to design sustainable and carbon-negative buildings, which could have a significant impact on mitigating climate change.
Collapse
Affiliation(s)
- Yu Ding
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Zhenqian Pang
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Kai Lan
- Center for Industrial Ecology, Yale School of the Environment, Yale University, New Haven, Connecticut06511, United States
| | - Yuan Yao
- Center for Industrial Ecology, Yale School of the Environment, Yale University, New Haven, Connecticut06511, United States
| | - Guido Panzarasa
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093Zürich, Switzerland.,WoodTec Group, Cellulose & Wood Materials, Empa, 8600Dübendorf, Switzerland
| | - Lin Xu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Marco Lo Ricco
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, Wisconsin53726, United States
| | - Douglas R Rammer
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, Wisconsin53726, United States
| | - J Y Zhu
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, Wisconsin53726, United States
| | - Ming Hu
- School of Architecture, Planning and Preservation, University of Maryland, College Park, Maryland20742, United States
| | - Xuejun Pan
- Department of Biological Systems Engineering, University of Wisconsin─Madison, Madison, Wisconsin53706, United States
| | - Teng Li
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Ingo Burgert
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093Zürich, Switzerland.,WoodTec Group, Cellulose & Wood Materials, Empa, 8600Dübendorf, Switzerland
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States.,Center for Materials Innovation, University of Maryland, College Park, Maryland20742, United States
| |
Collapse
|
14
|
Tang H, Wang H, Fang Y, Zhu JY, Yin J, Shen YX, Zeng ZC, Jiang DX, Hou YY, Du M, Lian CH, Zhao Q, Jiang HJ, Gong L, Li ZG, Liu J, Xie DY, Li WF, Chen C, Zheng B, Chen KN, Dai L, Liao YD, Li K, Li HC, Zhao NQ, Tan LJ. Neoadjuvant chemoradiotherapy versus neoadjuvant chemotherapy followed by minimally invasive esophagectomy for locally advanced esophageal squamous cell carcinoma: a prospective multicenter randomized clinical trial. Ann Oncol 2023; 34:163-172. [PMID: 36400384 DOI: 10.1016/j.annonc.2022.10.508] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [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: 05/08/2022] [Revised: 09/29/2022] [Accepted: 10/13/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Neoadjuvant therapy is recommended for locally advanced esophageal cancer, but the optimal strategy remains unclear. We aimed to evaluate the safety and efficacy of neoadjuvant chemoradiotherapy (nCRT) versus neoadjuvant chemotherapy (nCT) followed by minimally invasive esophagectomy (MIE) for locally advanced esophageal squamous cell carcinoma (ESCC). PATIENTS AND METHODS Eligible patients staged as cT3-4aN0-1M0 ESCC were randomly assigned (1 : 1) to the nCRT or nCT group stratified by age, cN stage, and centers. The chemotherapy, based on paclitaxel and cisplatin, was administered to both groups, while concurrent radiotherapy was added for the nCRT group; then MIE was carried out. The primary endpoint was 3-year overall survival. This study is registered with ClinicalTrials.gov (NCT03001596). RESULTS A total of 264 patients were eligible for the intention-to-treat analysis. By 30 November 2021, 121 deaths had occurred. The median follow-up was 43.9 months (interquartile range 36.6-49.3 months). The overall survival in the intention-to-treat population was comparable between the nCRT and nCT strategies [hazard ratio (HR) 0.82, 95% confidence interval (CI) 0.58-1.18; P = 0.28], with a 3-year survival rate of 64.1% (95% CI 56.4% to 72.9%) versus 54.9% (95% CI 47.0% to 64.2%), respectively. There were also no differences in progression-free survival (HR 0.83, 95% CI 0.59-1.16; P = 0.27) and recurrence-free survival (HR 1.07, 95% CI 0.71-1.60; P = 0.75), although the pathological complete response in the nCRT group (31/112, 27.7%) was significantly higher than that in the nCT group (3/104, 2.9%; P < 0.001). Besides, a trend of lower risk of recurrence was observed in the nCRT group (P = 0.063), while the recurrence pattern was similar (P = 0.802). CONCLUSIONS NCRT followed by MIE was not associated with significantly better overall survival than nCT among patients with cT3-4aN0-1M0 ESCC. The results underscore the pending issue of the best strategy of neoadjuvant therapy for locally advanced bulky ESCC.
Collapse
Affiliation(s)
- H Tang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai; Cancer Center, Zhongshan Hospital, Fudan University, Shanghai
| | - H Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai; Cancer Center, Zhongshan Hospital, Fudan University, Shanghai
| | - Y Fang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai; Cancer Center, Zhongshan Hospital, Fudan University, Shanghai
| | - J Y Zhu
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai; Department of Radiotherapy, Zhongshan Hospital, Fudan University, Shanghai
| | - J Yin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai; Cancer Center, Zhongshan Hospital, Fudan University, Shanghai
| | - Y X Shen
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai; Cancer Center, Zhongshan Hospital, Fudan University, Shanghai
| | - Z C Zeng
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai; Department of Radiotherapy, Zhongshan Hospital, Fudan University, Shanghai
| | - D X Jiang
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai; Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai
| | - Y Y Hou
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai; Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai
| | - M Du
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing
| | - C H Lian
- Department of General Surgery, Heping Hospital Affiliated to Changzhi Medical College, Changzhi
| | - Q Zhao
- Department of General Surgery, Heping Hospital Affiliated to Changzhi Medical College, Changzhi
| | - H J Jiang
- Department of Minimally Invasive Esophageal Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin
| | - L Gong
- Department of Esophageal Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin
| | - Z G Li
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai
| | - J Liu
- Department of Radiotherapy, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai
| | - D Y Xie
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou
| | - W F Li
- Department of Radiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou
| | - C Chen
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou
| | - B Zheng
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou
| | - K N Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The First Department of Thoracic Surgery, Peking University Cancer Hospital and Institute, Peking University School of Oncology, Beijing
| | - L Dai
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The First Department of Thoracic Surgery, Peking University Cancer Hospital and Institute, Peking University School of Oncology, Beijing
| | - Y D Liao
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - K Li
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - H C Li
- Department of Thoracic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - N Q Zhao
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
| | - L J Tan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai; Cancer Center, Zhongshan Hospital, Fudan University, Shanghai.
| |
Collapse
|
15
|
Zhu J, Zhao X, Wang H, Xiao H, Chen L. The role of chondrocyte-to-osteoblast trans-differentiation in fetal bone dysplasia of mice caused by prenatal exposure to dexamethasone. Front Pharmacol 2023; 14:1120041. [PMID: 36937846 PMCID: PMC10017528 DOI: 10.3389/fphar.2023.1120041] [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: 12/09/2022] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
Maternal exposure to dexamethasone can cause developmental toxicity of long bones in offspring. However, the effect of dexamethasone on the trans-differentiation of growth plate chondrocytes into osteoblasts and its role in bone dysplasia of fetuses caused by prenatal dexamethasone exposure (PDE) remains unclear. In this study, pregnant mice were treated with different doses, stages, and courses of dexamethasone according to clinical practice to reveal the phenomenon. Further, growth plate chondrocytes were treated with dexamethasone in vitro to clarify the phenomenon and mechanism. The results showed that PDE caused dysplasia of fetal long bones in female and male mice, accompanied by the delayed formation of the primary ossification center and the widening hypertrophic zone of growth plate cartilage. Meanwhile, PDE increased the number of hypertrophic chondrocytes at growth plate cartilage and decreased the number of osteoblasts at the primary ossification center. Moreover, PDE significantly decreased the expression of osteogenic transcription factor Runx2 but increased the expression of hypertrophic chondrocytes marker Col10. These above phenomena were more significant in the high dose, early stage, and double courses of dexamethasone exposure groups, and the male fetal mice showed more obvious than the female fetal mice. In vitro, dexamethasone significantly inhibited the trans-differentiation of growth plate chondrocytes into osteoblasts, accompanied by a decrease in Runx2 expression and an increase in Col10 expression. In conclusion, this study revealed the phenomenon and mechanism of fetal bone dysplasia caused by PDE from the new perspective of trans-differentiation disorder of growth plate chondrocytes to osteoblasts.
Collapse
Affiliation(s)
- Jiayong Zhu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiaoqi Zhao
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, China
| | - Hui Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, China
- Hubei Provincial Key Laboratory of Developmental Originated Disease, Wuhan, China
| | - Hao Xiao
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmental Originated Disease, Wuhan, China
- Joint Disease Research Center of Wuhan University, Wuhan, China
- *Correspondence: Liaobin Chen, ; Hao Xiao,
| | - Liaobin Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmental Originated Disease, Wuhan, China
- Joint Disease Research Center of Wuhan University, Wuhan, China
- *Correspondence: Liaobin Chen, ; Hao Xiao,
| |
Collapse
|
16
|
Zhang J, Zhu J, Zhao B, Nie D, Wang W, Qi Y, Chen L, Li B, Chen B. LTF induces senescence and degeneration in the meniscus via the NF-κB signaling pathway: A study based on integrated bioinformatics analysis and experimental validation. Front Mol Biosci 2023; 10:1134253. [PMID: 37168259 PMCID: PMC10164984 DOI: 10.3389/fmolb.2023.1134253] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 04/04/2023] [Indexed: 05/13/2023] Open
Abstract
Background: The functional integrity of the meniscus continually decreases with age, leading to meniscal degeneration and gradually developing into osteoarthritis (OA). In this study, we identified diagnostic markers and potential mechanisms of action in aging-related meniscal degeneration through bioinformatics and experimental verification. Methods: Based on the GSE98918 dataset, common differentially expressed genes (co-DEGs) were screened using differential expression analysis and the WGCNA algorithm, and enrichment analyses based on Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were further performed. Next, the co-DEGs were imported into the STRING database and Cytoscape to construct a protein‒protein interaction (PPI) network and further validated by three algorithms in cytoHubba, receiver operating characteristic (ROC) curve analysis and the external GSE45233 dataset. Moreover, the diagnostic marker lactotransferrin (LTF) was verified in rat models of senescence and replicative cellular senescence via RT‒qPCR, WB, immunohistochemistry and immunofluorescence, and then the potential molecular mechanism was explored by loss of function and overexpression of LTF. Results: According to the analysis of the GSE98918 dataset, we identified 52 co-DEGs (42 upregulated genes and 10 downregulated genes) in the OA meniscus. LTF, screened out by Cytoscape, ROC curve analysis in the GSE98918 dataset and another external GSE45233 dataset, might have good predictive power in meniscal degeneration. Our experimental results showed that LTF expression was statistically increased in the meniscal tissue of aged rats (24 months) and senescent passage 5th (P5) meniscal cells. In P5 meniscal cells, LTF knockdown inhibited the NF-κB signaling pathway and alleviated senescence. LTF overexpression in passage 0 (P0) meniscal cells increased the expression of senescence-associated secretory phenotype (SASP) and induced senescence by activating the NF-κB signaling pathway. However, the senescence phenomenon caused by LTF overexpression could be reversed by the NF-κB inhibitor pyrrolidine dithiocarbamate (PDTC). Conclusion: For the first time, we found that increased expression of LTF was observed in the aging meniscus and could induce meniscal senescence and degeneration by activating the NF-κB signaling pathway. These results revealed that LTF could be a potential diagnostic marker and therapeutic target for age-related meniscal degeneration.
Collapse
Affiliation(s)
- Jun Zhang
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jiayong Zhu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Boming Zhao
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Daibang Nie
- Department of Immunology, College of Basic Medicine, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Basic and Translational Research of Tumor Immunology, Chongqing Medical University, Chongqing, China
| | - Wang Wang
- Department of Immunology, College of Basic Medicine, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Basic and Translational Research of Tumor Immunology, Chongqing Medical University, Chongqing, China
| | - Yongjian Qi
- Department of Spine Surgery and Musculoskeletal Tumor, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Liaobin Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- *Correspondence: Liaobin Chen, ; Bin Li, ; Biao Chen,
| | - Bin Li
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- *Correspondence: Liaobin Chen, ; Bin Li, ; Biao Chen,
| | - Biao Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- *Correspondence: Liaobin Chen, ; Bin Li, ; Biao Chen,
| |
Collapse
|
17
|
Ni Q, Chen H, Li B, He H, Shi H, Zhu J, Wang H, Chen L. miR-200b-3p/ERG/PTHrP axis mediates the inhibitory effect of ethanol on the differentiation of fetal cartilage into articular cartilage. Chem Biol Interact 2022; 368:110201. [PMID: 36174738 DOI: 10.1016/j.cbi.2022.110201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/09/2022] [Accepted: 09/21/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE This study aims to further explore cartilage development in prenatal ethanol exposure (PEE) offspring at different times to explore the specific time points and mechanism of ethanol-induced fetal cartilage dysplasia. METHODS On gestational day (GD)14, GD17, and GD20, PEE fetal cartilage was evaluated by morphological analysis. RT-qPCR, immunohistochemistry, and immunofluorescence were used to detect the expression of cartilage marker genes and their regulatory factors. Bone marrow mesenchymal stem cells (BMSCs) were used to explore the effect of ethanol on the differentiation of chondrocytes. Additionally, we used inhibitors, overexpression plasmids and a luciferase reporter assay on GD17 chondrocytes to verify the mechanism. RESULTS PEE significantly reduced cartilage matrix content and the expression of marker genes on GD17 and GD20 but had no effect on GD14. The inhibition of chondrogenic differentiation by PEE mainly occurred on GD14-17. Furthermore, the expression of miR-200b-3p was increased, while that of ERG and PTHrP was markedly reduced in PEE fetal cartilage. In vitro, ethanol (30-120 mM) inhibited the differentiation of BMSCs into chondrocytes in a concentration-dependent manner, accompanied by strong expression of miR-200b-3p and low expression of ERG and PTHrP. Moreover, PTHLH and ERG overexpressed, as well as a miR-200b-3p inhibitor reversed the inhibitory effect of ethanol on the differentiation of fetal chondrocytes. Furthermore, miR-200b-3p could target and negatively regulate ERG. CONCLUSIONS PEE can significantly inhibit the development of articular cartilage, especially during articular cartilage formation. The mechanism is related to the decreased differentiation of fetal cartilage into articular cartilage mediated by the miR-200b-3p/ERG/PTHrP axis.
Collapse
Affiliation(s)
- Qubo Ni
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Haitao Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Bin Li
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Hangyuan He
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Huasong Shi
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Jiayong Zhu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Hui Wang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan, 430071, China.
| | - Liaobin Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan, 430071, China.
| |
Collapse
|
18
|
Liu L, Li B, Li Q, Han H, Zhou S, Wu Z, Gao H, Zhu J, Gu H, Chen L, Wang H. Transforming growth factor-β receptor 1: An intervention target for genetic poor cartilage quality induced by prenatal dexamethasone exposure. J Adv Res 2022; 47:123-135. [PMID: 35953031 PMCID: PMC10173161 DOI: 10.1016/j.jare.2022.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 10/15/2022] Open
Abstract
INTRODUCTION Fetal-originated osteoarthritis is relative to poor cartilage quality and may exhibit transgenerational genetic effects. Previous findings revealed prenatal dexamethasone exposure (PDE) induced poor cartilage quality in offspring. OBJECTIVES This study focused on further exploring molecular mechanism, heritability, and early intervention of fetal-originated osteoarthritis. METHODS Pregnant rats (F0) were segregated into control and PDE groups depending upon whether dexamethasone was administered on gestational days (GDs) 9-20. Some female offspring were bred with healthy males during postnatal week (PW) 8 to attain the F2 and F3 generations. The F3-generation rats were administrated with glucosamine intragastrically at PW12 for 6 weeks. The knee cartilages of male and female rats at different time points were harvested to assay their morphologies and functions. Furthermore, primary chondrocytes from the F3-generation rats were isolated to confirm the mechanism and intervention target of glucosamine. RESULTS Compared with the control, female and male rats in each generation of PDE group showed thinner cartilage thicknesses; shallower and uneven staining; fewer chondrocytes; higher Osteoarthritis Research Society International scores; and lower mRNA and protein expression of SP1, TGFβR1, Smad2, SOX9, ACAN and COL2A1. After F3-generation rats were treated with glucosamine, all of the above changes could be reversed. In primary chondrocytes isolated from the F3-generation rats of PDE group, glucosamine promoted SP1 expression and binding to TGFβR1 promoter to increase the expression of TGFβR1, p-Smad2, SOX9, ACAN and COL2A1, but these were prevented by SB431542 (a potent and selective inhibitor of TGFβR1). CONCLUSIONS PDE induced chondrodysplasia in offspring and stably inherited in F3-generation rats, which was related to decreased expression of SP1/TGFβR1/Smad2/SOX9 pathway to reduce the cartilage matrix synthesis, without major sex-based variations. Glucosamine could alleviate the poor genetic cartilage quality in offspring induced by PDE by up-regulating SP1/TGFβR1 signaling, which was prevented by a TGFβR1 inhibitor. This study elucidated the molecular mechanism and therapeutic target (TGFβR1) of genetic chondrodysplasia caused by PDE, which provides a research basis for precisely treating fetal-originated osteoarthritis.
Collapse
Affiliation(s)
- Liang Liu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Bin Li
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Qingxian Li
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hui Han
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Siqi Zhou
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Zhixin Wu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hui Gao
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Jiayong Zhu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hanwen Gu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Liaobin Chen
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
| | - Hui Wang
- Department of Pharmacology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
| |
Collapse
|
19
|
Zhang F, Li C, Qu X, Liu J, Yu Z, Wang J, Zhu J, Yu Y, Ding Z. A feedback regulation between ARF7-mediated auxin signaling and auxin homeostasis involving MES17 affects plant gravitropism. J Integr Plant Biol 2022; 64:1339-1351. [PMID: 35475598 DOI: 10.1111/jipb.13268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 04/25/2022] [Indexed: 06/14/2023]
Abstract
Gravitropism is an essential adaptive response of land plants. Asymmetric auxin gradients across plant organs, interpreted by multiple auxin signaling components including AUXIN RESPONSE FACTOR7 (ARF7), trigger differential growth and bending response. However, how this fundamental process is strictly maintained in nature remains unclear. Here, we report that gravity stimulates the transcription of METHYL ESTERASE17 (MES17) along the lower side of the hypocotyl via ARF7-dependent auxin signaling. The asymmetric distribution of MES17, a methyltransferase that converts auxin from its inactive form methyl indole-3-acetic acid ester (MeIAA) to its biologically active form free-IAA, enhanced the gradient of active auxin across the hypocotyl, which in turn reversely amplified the asymmetric auxin responses and differential growth that shape gravitropic bending. Taken together, our findings reveal the novel role of MES17-mediated auxin homeostasis in gravitropic responses and identify an ARF7-triggered feedback mechanism that reinforces the asymmetric distribution of active auxin and strictly controls gravitropism in plants.
Collapse
Affiliation(s)
- Feng Zhang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Cuiling Li
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Xingzhen Qu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Jiajia Liu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Zipeng Yu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Junxia Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Jiayong Zhu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Yongqiang Yu
- Horticulture Biology and Metabolomics Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Zhaojun Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| |
Collapse
|
20
|
Zhu JY, Pei D. [Culture of pluripotent stem cell-derived hepatocytes and organoids]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:244-248. [PMID: 35462478 DOI: 10.3760/cma.j.cn501113-20220318-00120] [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: 06/14/2023]
Abstract
Liver is one of the most important organs in the human body. Liver diseases are also a major threat to human health and longevity. Hepatic decompensation treatment is quite difficult due to multiple reasons. Extracorporeal liver support devices are unable to solve this problem, and there is a severe shortage of orthotopic liver transplant donors. Study of pluripotent stem cell-derived hepatocytes and organoids can determine not only hepatocyte fate, but also liver development, regeneration mechanisms, and pathophysiology. Furthermore, it can be used for drug screening in order to provide a stable source of functional hepatocytes for future transplantation therapy. Culture of pluripotent stem cell-derived hepatocytes and organoids has a self-organizing process similar to liver development, i.e., starting with changes in several key factors, and eventually forming functionally complex cells/organs. This paper introduces the main methods and progress of pluripotent stem cell-derived hepatocytes and organoids, with hope to provide clues for future research.
Collapse
Affiliation(s)
- J Y Zhu
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510535, China
| | | |
Collapse
|
21
|
Wu Z, Wen Y, Xiao H, Zhu J, Li B, Shangguan Y, He H, Wang H, Chen L. 11β-Hydroxysteroid dehydrogenase 2: A key mediator of high susceptibility to osteoporosis in offspring after prenatal dexamethasone exposure. Pharmacol Res 2022; 175:105990. [PMID: 34808367 DOI: 10.1016/j.phrs.2021.105990] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 02/05/2023]
Abstract
Epidemiological investigations have shown that individuals treated with dexamethasone during pregnancy have an increased risk of osteoporosis after birth. Our studies reported that peak bone mass was decreased in the prenatal dexamethasone exposure (PDE) offspring before chronic stress, while further decrease was observed after chronic stress. Simultaneously, increase of bone local active corticosterone was observed in the PDE offspring, while further increase was also observed after chronic stress. Moreover, the histone H3 lysine 9 acetylation (H3K9ac) level of 11-beta hydroxysteroid dehydrogenase 2 (11β-HSD2) and its expression in bone tissue of PDE offspring rats remained lower than the control before and after birth. Injection of 11β-HSD2 overexpression lentivirus into the bone marrow cavity could partially alleviate the accumulation of bone local active corticosterone and bone loss induced by PDE. In vitro, dexamethasone inhibited the expression of 11β-HSD2 and aggravated the inhibitory effect of corticosterone on the osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSCs). Overexpression of 11β-HSD2 partially alleviated the inhibitory effect of corticosterone. Moreover, dexamethasone promoted the nuclear translocation of glucocorticoid receptor (GR), which resulted in the stimulation of 11β-HSD2 expression due to the binding of GR to the 11β-HSD2 promoter region directly, as well as increasing H3K9ac level in the 11β-HSD2 promoter region by recruiting histone deacetylase 11 (HDAC11). Our results indicated that low expression of 11β-HSD2 in bone tissue is an important mediator for the high susceptibility to osteoporosis in PDE adult offspring.
Collapse
Affiliation(s)
- Zhixin Wu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China
| | - Yinxian Wen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Hao Xiao
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China
| | - Jiayong Zhu
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Bin Li
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Yangfan Shangguan
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Hangyuan He
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China
| | - Hui Wang
- Department of Pharmacology, Basic Medical Science of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
| | - Liaobin Chen
- Division of Joint Surgery and Sports Medicine, Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China; Joint Disease Research Center of Wuhan University, Wuhan 430071, China.
| |
Collapse
|
22
|
Zhu JY, Mei ZB, Zhang ZJ, Yang W, Zhao WW, Xu J, Zou QQ, Wang QM. [Clinical efficacy of the modified separation of external anal sphincter for the treatment of high horseshoe anal fistula]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:1111-1115. [PMID: 34923798 DOI: 10.3760/cma.j.cn441530-20201031-00581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
|
23
|
Huang SB, Hu ZC, Zhang Y, Tang B, Wang P, Xu HL, Wang ZY, Dong YX, Cheng P, Rong YC, Wu J, Zhu JY. [Effects and mechanisms of allogeneic epidermal stem cells on the survival of allogeneic full-thickness skin grafts in nude mice with full-thickness skin defect wounds]. Zhonghua Shao Shang Za Zhi 2021; 37:1061-1069. [PMID: 34794258 DOI: 10.3760/cma.j.cn501120-20200704-00339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects and mechanisms of allogeneic epidermal stem cells (ESCs) on the survival of allogeneic full-thickness skin grafts in nude mice with full-thickness skin defect wounds. Methods: Experimental research methods were applied. Primary ESCs that appeared paving stone-like after being cultured for 7 d were obtained by enzymatic digestion method from one 4-week-old male BALB/c-NU nude mouse (the same strain, age, and sex below). The cells of third passage were identified by flow cytometry to positively express ESC marker CD44 and negatively express CD45, meanwhile, the positive expression of ESC markers of p63 and integrin 6α, and negative expression of CD71 were identified by immunofluorescence method. The ESCs of third passage in the logarithmic growth phase were used for the following experiments. Twenty-six nude mice were equally divided into phosphate buffered saline (PBS) group and ESCs group according to the random number table. A full-thickness skin defect wound was made on the back of each nude mouse, and then the wounds of the two groups were sprayed with equal volumes of PBS and ESCs, respectively. The wounds were transplanted with full-thickness skin grafts cut from the backs of 4 other nude mice. Each ten nude mice from the two groups were selected, the wound healing and skin survival on post surgery day (PSD) 0 (immediately), 3, 7, 14, and 21 were observed, and the survival ratio and shrinkage rate of skin grafts on PSD 3, 7, 14, and 21 were calculated (the number of sample was the number of surviving skin grafts at each time point); the blood perfusion in the skin grafts on PSD 3, 7, and 14 was detected by the laser speckle blood flow imager, and the blood flow ratio of nude mice skin grafts in ESCs group to PBS group at each time point was calculated (the number of sample was the pair number of surviving skin grafts in group pairing at each time point). The skin graft tissue of each 3 nude mice remained in the two groups were collected on PSD 7, and the mRNA expressions and protein expressions of tumor necrosis factor α (TNF-α), interleukin 8 (IL-8), IL-10, type Ⅰ collagen, type Ⅲ collagen, and matrix metalloproteinase 9 (MMP-9) in the tissue were detected by real-time fluorescent quantitative reverse transcription polymerase chain reaction and Western blotting, respectively. Data were statistically analyzed with Log-rank test, analysis of variance for repeated measurement, one-way analysis of variance, independent sample t test, and Bonferroni correction. Results: Taking the condition on PSD 0 as a reference, the wounds of nude mice in the two groups healed gradually on PSD 3, 7, 14, and 21, and the shrinkage of skin grafts was gradually obvious. Among them, the shrinkage healing of wound of nude mice in PBS group was more significant than that in ESCs group. On PSD 3, the skin graft of 1 nude mouse failed in ESCs group, while the skin graft of 3 nude mice failed in PBS group. On PSD 7, the skin graft of another nude mouse failed in PBS group. The survival ratio of skin grafts of nude mice in the two groups was similar on PSD 3, 7, 14, and 21 (P>0.05). On PSD 3, 7, 14, and 21, the shrinkage rates of skin grafts of nude mice in ESCs group were (9.2±0.4)%, (19.7±1.2)%, (53.6±3.5)%, and (62.2±5.1)%, respectively, which was significantly lower than (11.0±0.9)%, (47.8±2.8)%, (86.1±7.1)%, and (89.7±9.0)% in PBS group (t=5.719, 26.650, 11.940, 7.617, P<0.01). On PSD 3, 7, and 14, blood perfusion signals were observed in the skin grafts of nude mice in the two groups. The average blood perfusion ratios of the skin grafts of nude mice in ESCs group to PBS group were greater than 1, and there was no statistically significant difference in the overall comparison of 3 time points (P>0.05). On PSD 7, compared with those of PBS group, the mRNA and protein expressions of TNF-α, IL-8, type Ⅰ collagen, and type Ⅲ collagen in the skin graft tissue of nude mice in ESCs group were significantly reduced, while the mRNA and protein expressions of IL-10 and MMP-9 in the skin graft tissue of nude mice in ESCs group were significantly increased (in mRNA comparison, t=2.823, 2.934, 2.845, 2.860, 3.877, 2.916, P<0.05). Conclusions: Allogeneic ESCs can reduce the shrinkage of allogeneic full-thickness skin grafts transplanted on full-thickness skin defect wounds in nude mice, promote the formation of new blood vessels between the skin graft and the wound, reduce inflammation and collagen protein expression, and promote the expression of MMP-9, thus improving the survival quality of skin grafts.
Collapse
Affiliation(s)
- S B Huang
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Z C Hu
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y Zhang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - B Tang
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - P Wang
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - H L Xu
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Z Y Wang
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y X Dong
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - P Cheng
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y C Rong
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - J Wu
- Department of Burns and Plastic Surgery, the First Affiliated Hospital of Shenzhen University, Shenzhen 518037, China
| | - J Y Zhu
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| |
Collapse
|
24
|
Xiao S, Chen C, Xia Q, Liu Y, Yao Y, Chen Q, Hartsfield M, Brozena A, Tu K, Eichhorn SJ, Yao Y, Li J, Gan W, Shi SQ, Yang VW, Lo Ricco M, Zhu JY, Burgert I, Luo A, Li T, Hu L. Lightweight, strong, moldable wood via cell wall engineering as a sustainable structural material. Science 2021; 374:465-471. [PMID: 34672741 DOI: 10.1126/science.abg9556] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
[Figure: see text].
Collapse
Affiliation(s)
- Shaoliang Xiao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Chaoji Chen
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Qinqin Xia
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Yu Liu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Yuan Yao
- Center for Industrial Ecology, Yale School of the Environment, Yale University, New Haven, CT 06511, USA
| | - Qiongyu Chen
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
| | - Matt Hartsfield
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Alexandra Brozena
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Kunkun Tu
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland.,WoodTec Group, Cellulose & Wood Materials, Empa, 8600 Dübendorf, Switzerland
| | - Stephen J Eichhorn
- Bristol Composites Institute, CAME School of Engineering, University of Bristol, University Walk, Bristol BS8 1TR, UK
| | - Yonggang Yao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Jianguo Li
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Wentao Gan
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Sheldon Q Shi
- Department of Mechanical Engineering, University of North Texas, Denton, TX 76203, USA
| | - Vina W Yang
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, WI 53726, USA
| | - Marco Lo Ricco
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, WI 53726, USA
| | - J Y Zhu
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, WI 53726, USA
| | - Ingo Burgert
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland.,WoodTec Group, Cellulose & Wood Materials, Empa, 8600 Dübendorf, Switzerland
| | - Alan Luo
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Teng Li
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.,Center for Materials Innovation, University of Maryland, College Park, MD 20742, USA
| |
Collapse
|
25
|
Luo X, Li T, Zhu JY, Huang L. [Application value of three-dimensional reconstruction in preoperative evaluation of precise hepatectomy for complex primary liver cancer]. Zhonghua Yi Xue Za Zhi 2021; 101:2210-2215. [PMID: 34333933 DOI: 10.3760/cma.j.cn112137-20210303-00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the application value of three-dimensional reconstruction of liver based on computer software in preoperative evaluation of precise hepatectomy for complex primary liver cancer. Methods: The clinical data of patients in Peking University People's Hospital Hepatobiliary surgery with complicated primary liver cancer from September 17, 2019 to December 20, 2020 were analyzed retrospectively. Preoperative enhanced CT/MR data of patients were collected, and 3D reconstruction of liver was performed in IQQA-3D Liver system. The liver volume of patients was calculated, the size and location of tumor were described, and the relationship between tumor and intrahepatic bile duct, portal vein, hepatic artery and inferior vena cava was described. Preoperative decision-making and treatment plan were made to compare the compliance of the actual operation plan with the planned operation plan under the guidance of three-dimensional reconstruction. Results: Among all 10 patients, there were 6 males and 4 females, aged 36 to 75 years. There were 6 cases of Child-Pugh grade A and 4 cases of B liver function. There were 5 cases of portal vein variation and 5 cases of hepatic artery variation. The range and M(Q1,Q3)of actual liver volume measured by 3D reconstruction in 10 patients was 895- 2 477 cm3 and [1 444(1 001, 1 854)] cm3;the nodule volume was 7-1 808 [133(50, 566)] cm3;the nodule volume in the liver was 0.8%-73.0% [11.0(3.3,32.7)]% and the number of suspected lesions was 1-7. In the end, 6 patients received surgical treatment;3 received chemotherapy, and 1 received conservative treatment. The preoperative three-dimensional reconstruction of liver anatomy and tumor location of the patients receiving surgical treatment were basically consistent with the intraoperative situation. There was no case of liver failure or death during perioperative period. Conclusion: In the preoperative evaluation of precise hepatectomy for complex primary liver cancer, 3D reconstruction can improve the rationality of treatment and the surgeon's understanding of the anatomical characteristics of the liver, so as to select the best treatment for patients, which has great application value.
Collapse
Affiliation(s)
- X Luo
- Department of Hepatobiliary Surgery, Peking University People's Hospital, Beijing 100044, China
| | - T Li
- Department of Hepatobiliary Surgery, Peking University People's Hospital, Beijing 100044, China
| | - J Y Zhu
- Department of Hepatobiliary Surgery, Peking University People's Hospital, Beijing 100044, China
| | - L Huang
- Department of Hepatobiliary Surgery, Peking University People's Hospital, Beijing 100044, China
| |
Collapse
|
26
|
Li B, Zhu JY, Yue GX, Yang BQ, Luo JF, Yuan WM, Li JB, Cui YC, Zhang M, Wang X. [Pre-clinical in vivo evaluation study on a new Chinese-made surgical biopatch for atrial septum]. Zhonghua Wai Ke Za Zhi 2021; 59:513-519. [PMID: 34102737 DOI: 10.3760/cma.j.cn112139-20200820-00656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the safety and effectiveness of a new Chinese-made surgical biopatch for atrial septum under the establishment of atrial septal defect animal model in miniature pigs. Methods: From June 2018 to April 2019, 26 pigs were divided into experimental group (15 pigs) and the control group (11 pigs). Animal models of atrial septal defect were established by traditional surgical methods. The to-be-evaluated and listed surgical biological patches (with a diameter of 10 mm) were implanted in the experimental group and the control group to repair the atrial septal defect. Cardiac ultrasound and blood examination of all animals were performed before and at 7, 30, 90, 180 days after operation, the results were analyzed with repetitive measurement and analysis of variance. At 90 days and 180 days after the operation, tissue samples were taken from animals after euthanasia. Pathological examination of heart and major organs were conducted. The independent sample t test and rank sum test were used to compare the data between the two groups, and the nonparametric was used to compare the patch calcification score between the two groups. Results: In total of 26 animals, 14 animals in the experimental group(6 at 90 days, 8 at 180 days) and 9 animals in the control group(4 at 90 days, 5 at 180 days) reached the end of the experiment. The other 3 animals (1 in the experimental group and 2 in the control group) died of arrhythmia, whole heart failure and right heart failure, the results of pathological examination showed that the causes of death were unrelated to the experimental materials. Cardiac ultrasound showed no patch leakage in all animals. There was no statistically significant difference in cardiac ultrasound and blood examination between the two groups at different time points after operation (all P>0.05). The pathological results showed that all the implants were intact and had good biocompatibility. There was no significant difference in the mean endothelialization rate between the experimental group and the control group at 90 and 180 days after operation ((80.8±29.1)% vs. (82.5±23.6)%, t=0.095, P=0.927; (78.8±36.4)% vs. (82.0±19.2)%, t=0.182, P=0.859) on 90 and 180 days, there was no significant difference in the patch calcification score between the two groups (1.00(1.25) vs. 2.00(0.75), Z=6.500, P=0.214; 0(0.75) vs. 1.00(2.00), Z=12.000, P=0.139). Conclusion: The new Chinese-made surgical biopatch for atrial septum has comparable safety and efficacy to that of the marketable patch in miniature pig atrial septal defect animal model.
Collapse
Affiliation(s)
- B Li
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - J Y Zhu
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - G X Yue
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - B Q Yang
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - J F Luo
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - W M Yuan
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - J B Li
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - Y C Cui
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - M Zhang
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| | - X Wang
- Animal Experimental Center, Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing 102300, China
| |
Collapse
|
27
|
Xu J, Zhu J, Liu J, Wang J, Ding Z, Tian H. SIZ1 negatively regulates aluminum resistance by mediating the STOP1-ALMT1 pathway in Arabidopsis. J Integr Plant Biol 2021; 63:1147-1160. [PMID: 33710720 DOI: 10.1111/jipb.13091] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 03/09/2021] [Indexed: 05/25/2023]
Abstract
Sensitive to proton rhizotoxicity 1 (STOP1) functions as a crucial regulator of root growth during aluminum (Al) stress. However, how this transcription factor is regulated by Al stress to affect downstream genes expression is not well understood. To explore the underlying mechanisms of the function and regulation of STOP1, we employed a yeast two hybrid screen to identify STOP1-interacting proteins. The SUMO E3 ligase SIZ1, was found to interact with STOP1 and mainly facilitate its SUMO modification at K40 and K212 residues. Simultaneous introduction of K40R and K212R substitutions in STOP1 enhances its transactivation activity to upregulate the expression of aluminum-activated malate transporter 1 (ALMT1) via increasing the association with mediator 16 (MED16) transcriptional co-activator. Loss of function of SIZ1 causes highly increased expression of ALMT1, thus enhancing Al-induced malate exudation and Al tolerance. Also, we found that the protein level of SIZ1 is reduced in response to Al stress. Genetic evidence demonstrates that STOP1/ALMT1 is epistatic to SIZ1 in regulating root growth response to Al stress. This study suggests a mechanism about how the SIZ1-STOP1-ALMT1 signaling module is involved in root growth response to Al stress.
Collapse
Affiliation(s)
- Jiameng Xu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Jiayong Zhu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Jiajia Liu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Junxia Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Zhaojun Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Huiyu Tian
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| |
Collapse
|
28
|
Zhu JY, Agarwal UP, Ciesielski PN, Himmel ME, Gao R, Deng Y, Morits M, Österberg M. Towards sustainable production and utilization of plant-biomass-based nanomaterials: a review and analysis of recent developments. Biotechnol Biofuels 2021; 14:114. [PMID: 33957955 PMCID: PMC8101122 DOI: 10.1186/s13068-021-01963-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 04/23/2021] [Indexed: 05/03/2023]
Abstract
Plant-biomass-based nanomaterials have attracted great interest recently for their potential to replace petroleum-sourced polymeric materials for sustained economic development. However, challenges associated with sustainable production of lignocellulosic nanoscale polymeric materials (NPMs) need to be addressed. Producing materials from lignocellulosic biomass is a value-added proposition compared with fuel-centric approach. This report focuses on recent progress made in understanding NPMs-specifically lignin nanoparticles (LNPs) and cellulosic nanomaterials (CNMs)-and their sustainable production. Special attention is focused on understanding key issues in nano-level deconstruction of cell walls and utilization of key properties of the resultant NPMs to allow flexibility in production to promote sustainability. Specifically, suitable processes for producing LNPs and their potential for scaled-up production, along with the resultant LNP properties and prospective applications, are discussed. In the case of CNMs, terminologies such as cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) used in the literature are examined. The term cellulose nano-whiskers (CNWs) is used here to describe a class of CNMs that has a morphology similar to CNCs but without specifying its crystallinity, because most applications of CNCs do not need its crystalline characteristic. Additionally, progress in enzymatic processing and drying of NPMs is also summarized. Finally, the report provides some perspective of future research that is likely to result in commercialization of plant-based NPMs.
Collapse
Affiliation(s)
- J Y Zhu
- USDA Forest Products Laboratory, One Gifford Pinchot Dr, Madison, WI, USA.
| | - Umesh P Agarwal
- USDA Forest Products Laboratory, One Gifford Pinchot Dr, Madison, WI, USA
| | | | | | - Runan Gao
- Renewable Bioproducts Institute, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- College of Materials Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Yulin Deng
- Renewable Bioproducts Institute, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Maria Morits
- Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
| |
Collapse
|
29
|
Lv B, Zhu J, Kong X, Ding Z. Light participates in the auxin-dependent regulation of plant growth. J Integr Plant Biol 2021; 63:819-822. [PMID: 33215867 DOI: 10.1111/jipb.13036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 11/16/2020] [Indexed: 06/11/2023]
Abstract
Light is the energy source for plant photosynthesis and influences plant growth and development. Through multiple photoreceptors, plant interprets light signals through various downstream phytohormones such as auxin. Recently, Chen et al. (2020) uncover a new layer of regulation in IPyA pathway of auxin biosynthesis by light. Here we highlight recent studies about how light controls plant growth through regulating auxin biosynthesis and signaling.
Collapse
Affiliation(s)
- Bingsheng Lv
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Jiayong Zhu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Xiangpei Kong
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Zhaojun Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| |
Collapse
|
30
|
Li T, Chen C, Brozena AH, Zhu JY, Xu L, Driemeier C, Dai J, Rojas OJ, Isogai A, Wågberg L, Hu L. Developing fibrillated cellulose as a sustainable technological material. Nature 2021; 590:47-56. [PMID: 33536649 DOI: 10.1038/s41586-020-03167-7] [Citation(s) in RCA: 325] [Impact Index Per Article: 108.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 10/06/2020] [Indexed: 01/30/2023]
Abstract
Cellulose is the most abundant biopolymer on Earth, found in trees, waste from agricultural crops and other biomass. The fibres that comprise cellulose can be broken down into building blocks, known as fibrillated cellulose, of varying, controllable dimensions that extend to the nanoscale. Fibrillated cellulose is harvested from renewable resources, so its sustainability potential combined with its other functional properties (mechanical, optical, thermal and fluidic, for example) gives this nanomaterial unique technological appeal. Here we explore the use of fibrillated cellulose in the fabrication of materials ranging from composites and macrofibres, to thin films, porous membranes and gels. We discuss research directions for the practical exploitation of these structures and the remaining challenges to overcome before fibrillated cellulose materials can reach their full potential. Finally, we highlight some key issues towards successful manufacturing scale-up of this family of materials.
Collapse
Affiliation(s)
- Tian Li
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA.,Center for Materials Innovation, University of Maryland, College Park, MD, USA
| | - Chaoji Chen
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA.,Center for Materials Innovation, University of Maryland, College Park, MD, USA
| | - Alexandra H Brozena
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | - J Y Zhu
- USDA Forest Products Laboratory, Madison, WI, USA
| | - Lixian Xu
- Sappi Biotech, Maastricht, The Netherlands
| | - Carlos Driemeier
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Jiaqi Dai
- Inventwood LLC, College Park, MD, USA
| | - Orlando J Rojas
- Bioproducts Institute, Departments of Chemical and Biological Engineering, Chemistry and Wood Science, The University of British Columbia, Vancouver, British Columbia, Canada.,Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
| | - Akira Isogai
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Lars Wågberg
- Department of Fibre and Polymer Technology and Wallenberg Wood Science Centre, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA. .,Center for Materials Innovation, University of Maryland, College Park, MD, USA.
| |
Collapse
|
31
|
Shangguan Y, Wu Z, Xie X, Zhou S, He H, Xiao H, Liu L, Zhu J, Chen H, Han H, Wang H, Chen L. Low-activity programming of the PDGFRβ/FAK pathway mediates H-type vessel dysplasia and high susceptibility to osteoporosis in female offspring rats after prenatal dexamethasone exposure. Biochem Pharmacol 2021; 185:114414. [PMID: 33434537 DOI: 10.1016/j.bcp.2021.114414] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 09/24/2020] [Revised: 12/13/2020] [Accepted: 01/06/2021] [Indexed: 12/19/2022]
Abstract
Dexamethasone is a common synthetic glucocorticoid drug that can promote foetal lung maturity. An increasing number of studies have shown that prenatal dexamethasone exposure (PDE) can cause a variety of short-term and long-term hazards to offspring, including bone development toxicity. H-type vessels are a newly discovered subtype of blood vessels associated with promoted bone formation and maintenance of bone mass. In this study, we aimed to explore whether H-type blood vessels are involved in PDE-induced long bone development toxicity in offspring and its mechanism. In vivo, we injected dexamethasone (0.2 mg/kg.d) subcutaneously at gestational days 9-20 and observed the H-type vessel abundance and bone mass at different time points in the offspring rats. In vitro, we investigated the effect of dexamethasone (0, 20, 100, and 500 nM) on the tube formation function of rat bone marrow-derived endothelial progenitor cells (EPCs) and explored its mechanism. Our results showed that the adult PDE female offspring rats were susceptible to osteoporosis. In addition, PDE inhibited bone mass, H-type vessel formation and the expression of bone platelet-derived growth factor receptor β (PDGFRβ)/focal adhesion kinase (FAK) pathway-related genes in antenatal and postnatal female offspring. Moreover, PDE promoted the expression of bone glucocorticoid receptor (GR), CCAAT and enhancer binding protein α (C/EBPα) and miR-34c in female foetuses. Dexamethasone suppressed the tube formation of rat bone marrow-derived EPCs and the activity of the PDGFRβ/FAK pathway, which was mediated by GR/C/EBPα/miR-34c signalling activation. In summary, PDE can cause H-type vessel dysplasia and high susceptibility to osteoporosis in female offspring, and its mechanism is related to the low-activity programming of the PDGFRβ/FAK pathway induced by GR/C/EBPα/miR-34c signalling activation. This study enhances the understanding of the molecular mechanism of dexamethasone-induced bone development toxicity and provides new insights for exploring the early intervention and therapeutic targets of foetal-derived osteoporosis.
Collapse
Affiliation(s)
- Yangfan Shangguan
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Zhixin Wu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Xingkui Xie
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Siqi Zhou
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hangyuan He
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hao Xiao
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Liang Liu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Jiayong Zhu
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Haitao Chen
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Hui Han
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Hui Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Liaobin Chen
- Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
| |
Collapse
|
32
|
Sun RJ, Ma J, Duan LZ, Zhu JY, Yu SC, Huang H, Zhang YL, Zhou GY, Wang CJ, Ba Y. [Threshold effects of body mass index on the bone mineral density of Chinese rural women in fluorosis area]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:1295-1299. [PMID: 33147932 DOI: 10.3760/cma.j.cn112150-20200825-01150] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To explore the threshold effect of body mass index (BMI) on bone mineral density (BMD) in Chinese women living in the fluorosis area, we conducted a cross-sectional study and recruited 722 women in rural areas in Henan Province, China. After detection and analyses, we found that compared with the normal BMI group, the risk of osteoporosis in the overweight and obese groups were reduced by 32% and 69%, respectively. Threshold effect analysis showed that BMD was positively correlated with BMI when BMI was 16.8-31.2 kg/m2; while when BMI was greater than 31.2 kg/m2, the correlation reached saturation. The correlation observed between low-to-moderate fluoride exposure and BMD in rural women was not significant.
Collapse
Affiliation(s)
- R J Sun
- Department of Environmental Health, Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - J Ma
- Department of Endemic Diseases, Kaifeng Municipal Center for Disease Control and Prevention, Kaifeng 475000, China
| | - L Z Duan
- Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450001, China
| | - J Y Zhu
- Department of Environmental Health, Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - S C Yu
- Department of Nutrition and Food Hygiene, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - H Huang
- Department of Environmental Health, Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y L Zhang
- Department of Environmental Health, Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - G Y Zhou
- Department of Environmental Health, Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - C J Wang
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y Ba
- Department of Environmental Health, Environment and Health Innovation Team, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
33
|
Tang Y, Feng P, Gui S, Jin X, Zhu J, Lu X. The Protective Effects of Protein-Enriched Fraction from Housefly (Musca domestica) against Aged-Related Brain Aging. J Nutr Sci Vitaminol (Tokyo) 2020; 66:409-416. [PMID: 33132343 DOI: 10.3177/jnsv.66.409] [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: 11/27/2022]
Abstract
The Musca domestica larvae are well known for its multifunctions and great nutritional value. The present study aimed at investigating the beneficial effect of Musca domestica larvae extract (Mde) against memory impairment, structural damage and oxidative stress in aged rats. Twenty-month-old rats were gavaged with Mde for 2 mo. Morris Water Maze test indicated Mde prevented aging-induced spatial learning and memory dysfunction in the aged rats. Mde supply was also found to attenuate age-associated changes of brain histology that observed by light microscopy and transmission electron microscopy. Moreover, the increase of antioxidant capacity, glutathione peroxidase (GPx) activity, superoxide dismutase (SOD) activity, as well as the decreased methane dicarboxylic aldehyde (MDA) levels, were consistent with these results. Hence, we propose that oral administration of Mde could improve memory impairment via antioxidant action, and Mde has the potential to act as an excellent food supplement or medicine for the attenuation of brain aging.
Collapse
Affiliation(s)
- Yanan Tang
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University.,Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University
| | | | - Shuiqing Gui
- Intensive Care Unit, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University
| | - Xiaobao Jin
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University.,Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University
| | - Jiayong Zhu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University.,Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University
| | - Xuemei Lu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University.,Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University
| |
Collapse
|
34
|
Cai C, Li J, Hirth K, Huber GW, Lou H, Zhu JY. Comparison of Two Acid Hydrotropes for Sustainable Fractionation of Birch Wood. ChemSusChem 2020; 13:4649-4659. [PMID: 32463990 DOI: 10.1002/cssc.202001120] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Indexed: 05/19/2023]
Abstract
This study reports on a comparative study of acid hydrotropic fractionation (AHF) of birch wood using maleic acid (MA) and p-toluenesulfonic acid (p-TsOH). Under the same level of delignification, lignin dissolved by MA is much less condensed with a higher content of ether aryl β-O-4 linkages. Lignin depolymerization dominated in MA hydrotropic fractionation (MAHF) and resulted in a single lower molecular weight peak, in contrast to the competitive depolymerization and repolymerization in p-TsOH AHF with a bimodal distribution. The less condensed MA-dissolved lignin facilitated catalytic conversion to monophenols. Carboxylation of residual lignin in fractionated cellulosic water-insoluble solids (WISs) enhanced enzymatic saccharification by decreasing nonproductive cellulase binding to lignin. At a low cellulase loading of 10 FPU g-1 glucan, saccharification of WIS-MT120 from MAHF at 120 °C was 95 % compared with 48 % for WIS-PT85 from p-TsOH AHF at 85 °C under the same level of delignification of 63 %. Residual lignin carboxylation also facilitated nanofibrillation of WIS for producing lignin-containing cellulose nanofibrils (LCNFs) through an enhanced lignin lubrication effect, which substantially decreases fibrillation energy. LCNFs from only one pass of microfluidization of WIS-MT120 have the same morphology as those from WIS-PT85 after three passes. MA also has a lower solubility and higher minimal hydrotropic concentration, which facilitated acid recovery. MA is U.S. Food and Drug Administration (FDA)-approved as an indirect food additive, affording significant advantages compared with p-TsOH for biorefinery applications.
Collapse
Affiliation(s)
- Cheng Cai
- USDA Forest Service, Forest Products Laboratory, Madison, WI, USA
- School of Chemistry Chemical Engineering, South China University Technology, Guangzhou, P.R. China
| | - Jian Li
- Dept. of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Kolby Hirth
- USDA Forest Service, Forest Products Laboratory, Madison, WI, USA
| | - George W Huber
- Dept. of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Hongming Lou
- School of Chemistry Chemical Engineering, South China University Technology, Guangzhou, P.R. China
| | - J Y Zhu
- USDA Forest Service, Forest Products Laboratory, Madison, WI, USA
| |
Collapse
|
35
|
Wang H, Zhu JJ, Ma Q, Agarwal UP, Gleisner R, Reiner R, Baez C, Zhu JY. Pilot-Scale Production of Cellulosic Nanowhiskers With Similar Morphology to Cellulose Nanocrystals. Front Bioeng Biotechnol 2020; 8:565084. [PMID: 33015018 PMCID: PMC7500145 DOI: 10.3389/fbioe.2020.565084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 08/20/2020] [Indexed: 11/25/2022] Open
Abstract
This study describes a class of cellulosic nanomaterials, cellulosic nanowhiskers (CNWs), and demonstrates scaled-up production with acid recovery using less expensive equipment made of common stainless steel rather than glass-lined steel. CNWs produced using concentrated maleic acid (MA) hydrolysis followed by mechanical fibrillation have morphology similar to MA-produced cellulose nanocrystals (CNCs) and sulfuric-acid-produced CNCs (S-CNCs) but differ in crystallinity. Applications of CNWs as a substitute for CNCs for which morphology and surface charge, rather than crystallinity, are the pertinent characteristics are presented. The tested CNW suspensions have a wider viscosity range of 0.001 to 1000 Pa.s over a variety of shear rates of 0.01 to 1000 1/s compared to S-CNCs of 0.001 to 0.1 Pa.s and are better suited for applications such as rheology modification and 3D printing. This study proposes CNWs as a less expensive and sustainable replacement for CNCs in applications that do not require crystalline properties.
Collapse
Affiliation(s)
- Huihui Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
- USDA Forest Service, Forest Products Laboratory, Madison, WI, United States
| | - Jonathan J Zhu
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Qianli Ma
- International Center for Bamboo and Rattan, Beijing, China
| | - Umesh P Agarwal
- USDA Forest Service, Forest Products Laboratory, Madison, WI, United States
| | - Roland Gleisner
- USDA Forest Service, Forest Products Laboratory, Madison, WI, United States
| | - Richard Reiner
- USDA Forest Service, Forest Products Laboratory, Madison, WI, United States
| | - Carlos Baez
- USDA Forest Service, Forest Products Laboratory, Madison, WI, United States
| | - J Y Zhu
- USDA Forest Service, Forest Products Laboratory, Madison, WI, United States
| |
Collapse
|
36
|
Zhu JY, Ma LQ, Zhang J. [Effect of family with sequence similarity 13 member A gene interference on apoptosis and proliferation of human airway epithelial cells and its relationship with small airway remodeling in patients with chronic obstructive pulmonary disease]. Zhonghua Yi Xue Za Zhi 2020; 100:2481-2487. [PMID: 32829592 DOI: 10.3760/cma.j.cn112137-20200326-00945] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the relationship between family with sequence similarity 13 member A (FAM13A) gene and small airway remodeling in chronic obstructive pulmonary disease (COPD), and the effect of interference with FAM13A gene expression on the apoptosis and proliferation phenotype of human airway epithelial cells (16HBE). Methods: From January 2018 to January 2020, 74 patients in the Department of Thoracic Surgery of General Hospital of Ningxia Medical University were treated by surgery for lung tumors or pulmonary bullae. According to the lung function and smoking history, the 74 patients were divided into four groups: non-smoking group with normal lung function (normal group, 23 patients), smoking group with normal lung function (smoking group, 24 patients), non-smoking group with COPD (11 patients) and smoking group with COPD (16 patients). The expression of FAM13A in small airway of each group was detected by immunohistochemistry, and the correlation between FAM13A and the airflow restriction indexes by pulmonary function was analyzed. The shRNA fragment of FAM13A gene was designed, and the shRNA lentivirus vector of FAM13A gene was constructed and packaged. The expression level of FAM13A gene was detected by real-time fluorescent quantitative PCR (qRT-PCR) and Western blot, and the best shRNA sequence was screened. Flow cytometry was used to detect apoptosis rate and the fluorescence intensity of proliferation marker Ki-67 in 16HBE cells. Results: FAM13A was mainly expressed in the cytoplasm of small airway epithelial cells. The levels of FAM13A absorbance (A) of small airway epithelial cells in non-smoking group and smoking group with COPD were higher than those in normal group and smoking group (0.365±0.026, 0.412±0.053 to 0.113±0.018, 0.105±0.009, all P<0.05), and they were negatively correlated with forced expiratory volume in 1s/forced vital capacity (FEV(1)/FVC) and FEV(1)% pre (r=-0.48 and r=-0.40, all P<0.05). The FAM13A shRNA lentiviral vector was successfully constructed, and FAM13A interference was successfully achieved in the 16HBE cell line. After infection of 16HBE cells, the results of qRT-PCR and Western blot showed that the expression of FAM13A in shRNA-target-2 group decreased (all P<0.01). Compared with the negative control group (shRNA-NC), the apoptosis rate of FAM13A shRNA group decreased (P=0.023), and the fluorescence intensity of Ki-67 also decreased (P=0.042). Conclusions: FAM13A gene expression is increased in COPD small airway epithelial cells, and it is related to COPD airflow limitation. FAM13A gene may participate in the process of COPD remodeling by affecting the apoptosis and proliferation of human airway epithelial cells.
Collapse
Affiliation(s)
- J Y Zhu
- Department of Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - L Q Ma
- Department of Pathology, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - J Zhang
- Department of Respiratory and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| |
Collapse
|
37
|
Liu W, Wu L, Wang J, Li X, Jin X, Zhu J. Activity of Vip3Aa1 against Periplaneta americana. Open Life Sci 2020; 15:133-144. [PMID: 33987470 PMCID: PMC8114776 DOI: 10.1515/biol-2020-0014] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 12/04/2019] [Indexed: 11/15/2022] Open
Abstract
AbstractBacillus thuringiensis (Bt) is a well-known entomopathogen. In this study, we cloned the vip3Aa1 gene from Bt strain GIM1.147 and investigated the insecticidal activity of Bt Vip3Aa1 protein produced by Escherichia coli against Periplaneta americana and Blattella germanica. The results showed that purified Vip3Aa1 exhibited an LC50 at 24 h against P. americana and B. germanica of 0.182 mg·ml-1 and 0.276 mg·ml-1, respectively. Investigations of its mode of action showed that Vip3Aa1 could be proteolyzed into a 62-kDa toxic protein by P. americana gut-soluble proteases. In addition, Vip3Aa1 caused severe damage to the columnar colon and the midgut, as observed through hematoxylin-eosin staining and scanning electron microscopy. The 62-kDa activated Vip3Aa1 protein could form ion channels in the colon and the midgut in vitro. Based on protease activity analysis, Vip3Aa1 at concentrations of 0.125 mg·ml-1 and 0.031 mg·ml-1 could downregulate the activities of glutathione S-transferase, α-NA esterase, trypsin, and chymotrypsin. This report provides the first description of the activity of Vip3Aa1 toxins toward P. americana and B. germanica and demonstrates that the mechanism through which Vip3Aa1 kills P. americana and B. germanica differs from that involved in the killing of lepidopteran insects.
Collapse
Affiliation(s)
- Wenbin Liu
- School of Pharmaceutical Sciences, Southern Medical University,1023 Shatai South Road, Guangzhou510515, P. R. China
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou510006, P. R. China
| | - Lirong Wu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou510006, P. R. China
| | - Jie Wang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou510006, P. R. China
| | - Xiaobo Li
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou510006, P. R. China
| | - Xiaobao Jin
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou510006, P. R. China
| | - Jiayong Zhu
- School of Pharmaceutical Sciences, Southern Medical University,1023 Shatai South Road, Guangzhou510515, P. R. China
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou510006, P. R. China
| |
Collapse
|
38
|
Mei H, Xu J, He Y, Yang X, Liu W, Tian W, Zeng YU, Zhu J. Correction to: Protein-rich extract of Musca domestica larvae alleviated metabolic disorder in STZ-induced type 2 diabetic rat model via hepatoprotective and pancreatic β-cell protective activities. J Biosci 2019; 44:131. [PMID: 31894112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- Hanfang Mei
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou 510006, Guangdong, China
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Jia C, Chen C, Mi R, Li T, Dai J, Yang Z, Pei Y, He S, Bian H, Jang SH, Zhu JY, Yang B, Hu L. Clear Wood toward High-Performance Building Materials. ACS Nano 2019; 13:9993-10001. [PMID: 31502821 DOI: 10.1021/acsnano.9b00089] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Developing advanced building materials with both excellent thermal insulating and optical properties to replace common glass (thermal conductivity of ∼1 W m-1 K-1) is highly desirable for energy-efficient applications. The recent development of transparent wood suggests a promising building material with many advantages, including high optical transmittance, tunable optical haze, and excellent thermal insulation. However, previous transparent wood materials generally have a high haze (typically greater than 40%), which is a major obstacle for their practical application in the replacement of glass. In this work, we fabricate a clear wood material with an optical transmittance as high as 90% and record-low haze of 10% using a delignification and polymer infiltration method. The significant removal of wood components results in a highly porous microstructure, much thinner wood cell walls, and large voids among the cellulose fibrils, which a polymer can easily enter, leading to the dense structure of the clear wood. The separated cellulose fibrils that result from the removal of the wood components dramatically weaken light scattering in the clear wood, which combined with the highly dense structure produces both high transmittance and extremely low haze. In addition, the clear wood exhibits an excellent thermal insulation property with a low thermal conductivity of 0.35 W m-1 K-1 (one-third of ordinary glass); thus, the application of clear wood can greatly improve the energy efficiency of buildings. The developed clear wood, combining excellent thermal insulating and optical properties, represents an attractive alternative to common glass toward energy-efficient buildings.
Collapse
Affiliation(s)
- Chao Jia
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - Chaoji Chen
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - Ruiyu Mi
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - Tian Li
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - Jiaqi Dai
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - Zhi Yang
- Department of Mechanical Engineering , University of Maryland , College Park , Maryland 20742 , United States
| | - Yong Pei
- Department of Mechanical Engineering , University of Maryland , College Park , Maryland 20742 , United States
| | - Shuaiming He
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - Huiyang Bian
- Forest Products Laboratory , USDA Forest Service, Madison , Wisconsin 53726 , United States
| | - Soo-Hwan Jang
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| | - J Y Zhu
- Forest Products Laboratory , USDA Forest Service, Madison , Wisconsin 53726 , United States
| | - Bao Yang
- Department of Mechanical Engineering , University of Maryland , College Park , Maryland 20742 , United States
| | - Liangbing Hu
- Department of Materials Science and Engineering , University of Maryland College Park , College Park , Maryland 20742 , United States
| |
Collapse
|
40
|
Zhu JY, Zhou F, Yu L, Zhang J. [Epithelial-mesenchymal transition of small airway epithelium in patients receiving lung tumor surgery with normal lung function and chronic obstructive pulmonary disease]. Zhonghua Yi Xue Za Zhi 2019; 99:2681-2686. [PMID: 31505719 DOI: 10.3760/cma.j.issn.0376-2491.2019.34.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the phenomenon of small airway epithelial-mesenchymal transition (EMT) in patients with normal pulmonary function and chronic obstructive pulmonary disease (COPD) who received surgical treatment for lung tumors. Methods: In this study, 52 patients undergoing surgical treatment for lung tumors admitted to the General Hospital of Ningxia Medical University were included from January 2018 to January 2019. According to the preoperative pulmonary function and smoking history, patients were divided into group A (non-smoking with normal pulmonary function group, 15 patients), group B (smoking with normal pulmonary function group, 21 patients), group C (COPD stable phase group, 16 patients). HE staining was performed to observe the pathological changes in small airway and lung tissue. Immunohistochemistry was used to detect the localization and expression of E-cadherin, α-smooth muscle actin (α-SMA) and Vimentin in small airway. Western blot was used to detect the levels of E-cadherin, α-SMA and Vimentin. Results: (1) There were no significant differences in age, gender, and the ratio of disease composition among the three groups (P>0.05), but forced expiratory volume in one second (FEV(1)) as percentage of predicted value (FEV(1)%pred) and FEV(1)/forced vital capacity (FEV(1)/FVC) in group C were lower than those in groups A and B (all P<0.01), while there was no significant difference between group A and group B (P>0.05); (2) the bronchial wall thickness in group B and group C were higher than that of group A [(32.4±2.4) and (54.6±4.9) vs (22.4±2.2) μm], and group C was significantly higher than group B (P=0.003); (3) the expression levels of E-cadherin in the epithelial cells of small airway in group B and group C were lower than those in group A (0.021±0.008 and 0.018±0.007 vs 0.062±0.010) (all P<0.05), while the levels of mesenchymal cell markers such as α-SMA and Vimentin in group B and group C were higher than group A, and group C was higher than group B (α-SMA: 0.641±0.113, 0.780±0.133 vs 0.404±0.123; Vimentin: 0.064±0.033, 0.083±0.022 vs 0.030±0.021) (P=0.002 and P=0.003). Conclusion: In patients undergoing surgical treatment of lung tumors, there is EMT in the small airways of patients with COPD, and EMT has occurred in the small airways of smokers with normal pulmonary function.
Collapse
Affiliation(s)
- J Y Zhu
- Department of Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - F Zhou
- Department of Respiratory Medicine, Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan 430081, China
| | - L Yu
- Department of Thoracic Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - J Zhang
- Department of Respiratory and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| |
Collapse
|
41
|
Yuan CQ, Zhu H, Zhu JY, Xiao LX, Zhang Q, Liu H. [The effect of surgical methods and postoperative eye position on the quality of life in patients with intermittent exotropia]. Zhonghua Yan Ke Za Zhi 2019; 53:924-930. [PMID: 29325385 DOI: 10.3760/cma.j.issn.0412-4081.2017.12.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the effects of different surgical methods and postoperative eye positions on the quality of life of children with intermittent exotropia (IXT) and their parents 3 months following strabismus surgery. Methods: Clinical observation. One-hundred and eighty children aged 2 to 17 years with IXT who received surgical treatment were recruited. One parent of each child was investigated by using 2 kinds of the Chinese version of the Intermittent Exotropia Questionnaires (CIXTQ) within 1 weeks before and at 3 months after surgery: the parent proxy scale (for parents to assess children's health related quality of life (HRQoL)) and the parent scale (containing functional, psychosocial and surgery subscales; for parents to assess their HRQoL). One hundred and eighty children were divided into different groups according to the surgical. Methods Monocular surgery group, binocular surgery group and eye position after 3 months: undercorrection group, successful group, overcorrection group, to explore: (1) the change of scores before and after surgery. (2) the difference of score changes after surgery between monocular and binocular surgery groups. (3) the difference of score changes after surgery between different postoperative eye position groups. Results: Significant improvement in median scores was seen from pre-operation to 3months post-operatively for all the proxy scale (t=-9.585, P<0.001), the functional (t=-11.361, P<0.001), psychosocial (t=-10.856, P<0.001) and surgery subscale (t=-11.622, P< 0.001) of parent scale. The change values from pre-operation to 3months post-operatively were not significantly different between monocular and binocular surgery groups for all the proxy scale (t=0.242, P=0.330), the functional (t=0.462, P=0.050), psychosocial (t=0.781, P=0.582) and surgery subscale (t=0.009, P=0.355) of parent scale, but significantly different between undercorrection, successful and overcorrection groups for the proxy scale (F=21.527, P<0.001), the functional (F=54.236, P<0.001), psychosocial (F=41.784, P<0.001) and surgery subscale (F=31.943, P<0.001). The scores of proxy scale and 3 parent subscales were all significantly improved (t=-13.639 to -6.059, P<0.05) after operation in both the undercorrection and successful groups, while significantly decreased in the overcorrection group (t=1.350-4.391, P<0.05). Conclusions: HRQoL can be improved significantly in both the undercorrection and successful groups, while decreased in the overcorrection group. (Chin J Ophthalmol, 2017, 53: 924-930).
Collapse
Affiliation(s)
- C Q Yuan
- Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing 210000, China
| | | | | | | | | | | |
Collapse
|
42
|
Wei JY, Lin DN, Wu ZB, Zhu JY, Zhao ZX, Mei YY, Lin CS, Zhang J, Zhang XH. [Safety and efficacy of DCV-based DAAs therapy for chronic HCV infection in China]. Zhonghua Gan Zang Bing Za Zhi 2019; 26:933-939. [PMID: 30669787 DOI: 10.3760/cma.j.issn.1007-3418.2018.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy and safety of DCV-based DAAs therapy for chronic HCV infected Chinese patients. Methods: An open-label, non-randomized, prospective study was designed. Fifty-two patients with chronic HCV infection were enrolled. Among them, there was one patient after liver transplantation, 2 patients after kidney transplantation, 3 patients with hepatocellular carcinoma, and 4 patients with HBV infection. Thirteen cases with chronic hepatitis C (one compensated cirrhosis) who were negative for resistance-related variants [NS5A RAS (-)] of gene 1b and NS5A were treated with daclatasvir (DCV) + asunaprevir (ASV) for 24 weeks. Twenty-five cases of CHC (six compensated cirrhosis) with GT 1b, 2a, 3a, 3b, 6a were treated with DCV + SOF ± RBV for 24 weeks. 8 cases with decompensated cirrhosis of gene 1b and NS5A RAS(-) were given DCV + SOF + RBV regimen for 12 weeks. Six cases with decompensated cirrhosis, of gene 2a, 1b, 2a, 3a, 3b, were given DCV + SOF + RBV regimen for 24 weeks. HCV RNA, blood routine test, liver and kidney function, and upper abdominal ultrasound/MRI were measured at baseline, 4 weeks of treatment, end of treatment, and 12 weeks of follow-up. The incidence of adverse events and laboratory abnormalities during treatment were recorded. A t-test was used to compare the measurement data between two groups, and analysis of variance was used to compare the measurement data between multiple groups. Results: Sixteen patients (100%) achieved SVR12 after treatment, with 0% recurrence rate. Rapid virological response (RVR) of the four treatment regimens were 76.92%, 54.17%, 87.50%, and 83.33%, respectively, and 32 patients achieved 100% virological response after the completion of treatment. The incidence of adverse events of chronic hepatitis C with cirrhosis and decompensated cirrhosis was 62.5% and 64.29%, respectively. The most common adverse event was fatigue in CHC (25.00%), and elevated indirect bilirubin in decompensated cirrhosis (42.86%). No serious adverse drug events, deaths or adverse reactions occurred. Conclusion: DCV-based DAAs regimen is promising option for the treatment of HCV genotypes, compensated cirrhosis, decompensated cirrhosis, hepatocellular carcinoma, and HCV infection after liver/kidney transplantation in china. Above all, it has high SVR12 with good tolerability and safety profile.
Collapse
Affiliation(s)
- J Y Wei
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Zhang L, Gui S, Liang Z, Liu A, Chen Z, Tang Y, Xiao M, Chu F, Liu W, Jin X, Zhu J, Lu X. Musca domestica Cecropin (Mdc) Alleviates Salmonella typhimurium-Induced Colonic Mucosal Barrier Impairment: Associating With Inflammatory and Oxidative Stress Response, Tight Junction as Well as Intestinal Flora. Front Microbiol 2019; 10:522. [PMID: 30930887 PMCID: PMC6428779 DOI: 10.3389/fmicb.2019.00522] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 02/28/2019] [Indexed: 12/18/2022] Open
Abstract
Salmonella typhimurium, a Gram-negative food-borne pathogen, induces impairment in intestinal mucosal barrier function frequently. The injury is related to many factors such as inflammation, oxidative stress, tight junctions and flora changes in the host intestine. Musca domestica cecropin (Mdc), a novel antimicrobial peptide containing 40 amino acids, has potential antibacterial, anti-inflammatory, and immunological functions. It remains unclear exactly whether and how Mdc reduces colonic mucosal barrier damage caused by S. typhimurium. Twenty four 6-week-old male mice were divided into four groups: normal group, control group (S. typhimurium-challenged), Mdc group, and ceftriaxone sodium group (Cs group). HE staining and transmission electron microscopy (TEM) were performed to observe the morphology of the colon tissues. Bacterial load of S. typhimurium in colon, liver and spleen were determined by bacterial plate counting. Inflammatory factors were detected by enzyme linked immunosorbent assay (ELISA). Oxidative stress levels in the colon tissues were also analyzed. Immunofluorescence analysis, RT-PCR, and Western blot were carried out to examine the levels of tight junction and inflammatory proteins. The intestinal microbiota composition was assessed via 16s rDNA sequencing. We successfully built and evaluated an S. typhimurium-infection model in mice. Morphology and microcosmic change of the colon tissues confirmed the protective qualities of Mdc. Mdc could inhibit colonic inflammation and oxidative stress. Tight junctions were improved significantly after Mdc administration. Interestingly, Mdc ameliorated intestinal flora imbalance, which may be related to the improvement of tight junction. Our results shed a new light on protective effects and mechanism of the antimicrobial peptide Mdc on colonic mucosal barrier damage caused by S. typhimurium infection. Mdc is expected to be an important candidate for S. typhimurium infection treatment.
Collapse
Affiliation(s)
- Lun Zhang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Shuiqing Gui
- Intensive Care Unit, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Zhaobo Liang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Along Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhaoxia Chen
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yanan Tang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mingzhu Xiao
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Fujiang Chu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wenbin Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiaobao Jin
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jiayong Zhu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xuemei Lu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| |
Collapse
|
44
|
Qi M, Zhu J, Xu J, Zhao D, Liu Y. Investigation of Inherently Safer Design Through Process Intensification: Novel Safety Assessment Methodology and Case Study in C 3–Alkyne Hydrogenation Distillation Process. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b04854] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meng Qi
- College of Chemical Engineering, China University of Petroleum (Qingdao), Qingdao 266580, China
- Mary Kay O’Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, United States
| | - Jiayong Zhu
- Mary Kay O’Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, United States
| | - Jiaming Xu
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Dongfeng Zhao
- College of Chemical Engineering, China University of Petroleum (Qingdao), Qingdao 266580, China
| | - Yi Liu
- College of Chemical Engineering, China University of Petroleum (Qingdao), Qingdao 266580, China
| |
Collapse
|
45
|
Zhu J, Hu J, Mao YF, Chen FY, Zhu JY, Shi JM, Yu DD, Hao SG, Tao R, Liu P, Gu SY, Hou J, He HY, Liang AB, Ding Y, Liu LG, Xie YH, Zhu Q, Yu YH, Yao YH, Chen W, Xu HL, Han XH, Wang C. [A multicenter, retrospective study of pathogenic bacteria distribution and drug resistance in febrile neutropenic patients with hematological diseases in Shanghai]. Zhonghua Xue Ye Xue Za Zhi 2019; 38:945-950. [PMID: 29224317 PMCID: PMC7342794 DOI: 10.3760/cma.j.issn.0253-2727.2017.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
目的 了解上海地区中性粒细胞缺乏(粒缺)伴发热血液病患者致病细菌的分布及耐药情况。 方法 回顾性分析2012年1月至2014年12月上海市12家医院血液科粒缺伴发热住院患者的临床分离菌株,用纸片扩散法进行药敏试验,WHONET 5.6软件分析病原菌分布及药敏数据。 结果 从上海地区粒缺伴发热患者中共分离出1 260株细菌,其中革兰阳性菌420株(33.3%),革兰阴性菌840株(66.7%)。排在前七位的分别是肺炎克雷伯菌158株(12.5%)、嗜麦芽窄食单胞菌120株(9.5%)、大肠埃希菌115株(9.1%)、铜绿假单胞菌109株(8.7%)、鲍曼不动杆菌83株(6.6%)、金黄色葡萄球菌70株(5.6%)和屎肠球菌63株(5.0%)。呼吸道分泌物标本中,非发酵菌占56.2%(350/623)。其中嗜麦芽窄食单胞菌占15.3%(95/623)。血液标本中,肠杆菌科细菌占42.3%(104/246),凝固酶阴性葡萄球菌占34.6%(85/246)。脓液标本中肠杆菌科细菌占39.4%(76/193),肠球菌属细菌占28.5%(55/193)。耐甲氧西林金黄色葡萄球菌葡萄球菌(MRSA)和耐甲氧西林凝固酶阴性葡萄球菌(MRCNS)的检出率分别为54.3%和82.5%,未发现耐利奈唑胺、万古霉素、替考拉宁葡萄球菌属菌株,耐万古霉素屎肠球菌的检出率为8.9%,肠球菌属未检出耐利奈唑胺的菌株。肠杆菌科细菌对碳青霉烯类药物高度敏感。铜绿假单胞菌对亚胺培南和美罗培南的耐药率已分别达34.1%和15.8%。嗜麦芽窄食单胞菌对米诺环素、左氧氟沙星、复方磺胺甲恶唑等药物敏感。鲍曼不动杆菌仅对头孢哌酮/舒巴坦的耐药率低于10.0%。肺炎克雷伯菌、嗜麦芽窄食单胞菌、铜绿假单胞菌、鲍曼不动杆菌等革兰阴性菌对大多常用抗菌药物的耐药率低于CHINET监测的数据。 结论 粒缺伴感染患者常见感染部位致病菌株分布有其特点,细菌耐药率整体低于CHINET全国医院大样本监测。
Collapse
Affiliation(s)
- J Zhu
- Department of Hematology, Shanghai Jiaotong University Affiliated Shanghai General Hospital, Shanghai 200080, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - C Wang
- Department of Hematology, Shanghai Jiaotong University Affiliated Shanghai General Hospital, Shanghai 200080, China
| |
Collapse
|
46
|
Mei H, Xu J, He Y, Yang X, Liu W, Tian W, Zeng YU, Zhu J. Protein-rich extract of Musca domestica larvae alleviated metabolic disorder in STZ-induced type 2 diabetic rat model via hepatoprotective and pancreatic β-cell protective activities. J Biosci 2018; 43:969-983. [PMID: 30541957] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The study was designed to explore the beneficial effect of Musca domestica larvae extract (MDLE) on a metabolic disorder using a diabetic rat model. Streptozotocin-induced diabetic rats were treated with or without MDLE. Blood glucose, insulin levels, lipid profiles, and oxidative stress markers were measured. The morphological changes in the pancreas and liver were determined, as well as insulin expression. The expression of glucose transporter 4 (GLUT4), phospho-adenosine monophosphate-activated protein kinase (p-AMPK)/total AMPK, superoxide dismutase 1 (SOD1), catalase (CAT), and peroxisome proliferator-activated receptor gamma (PPARγ) were detected. Compared with untreated diabetic rats, MDLEtreated rats had decreased urine volume, food intake, and water intake, along with significantly lower levels of blood glucose, malondialdehyde (MDA), plasma triglycerides, low-density lipoprotein (LDL), and total cholesterol. MDLEtreated rats also had higher levels of SOD activity, high-density lipoprotein (HDL), and insulin. MDLE treatment partially restored the β-cell population, improved the liver necrosis and islet cell damage, reversed the decreased expression of GLUT4, phospho-AMPK, SOD1, and CAT in the liver, skeletal muscle and pancreatic tissue, and also increased the expression of PPARγ in the liver and adipose tissue in diabetic rats. In conclusion, the obtained results suggest that MDLE could possibly be used pharmacologically as an adjuvant for the treatment of diabetes.
Collapse
Affiliation(s)
- Hanfang Mei
- Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou 510006, Guangdong, China
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Mei H, Xu J, He Y, Yang X, Liu W, Tian W, Zeng Y, Zhu J. Protein-rich extract of Musca domestica larvae alleviated metabolic disorder in STZ-induced type 2 diabetic rat model via hepatoprotective and pancreatic β-cell protective activities. J Biosci 2018. [DOI: 10.1007/s12038-018-9804-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
48
|
Ding XL, Zhu PF, Huang CH, Zhang Q, Zhu JY, Liu WW, Zhou WJ. [The transformation of microcystin-LR during tap water treatment process and analysis of its degradation products]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:898-903. [PMID: 30196635 DOI: 10.3760/cma.j.issn.0253-9624.2018.09.006] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To establish a liquid chromatography-tandem mass spectrometry (LC/MS/MS) method for the determination of microcystin-LR (MC-LR) in drinking water, investigate its removal efficiency during tap water advanced treatment process and analyze its degradation products in the tap water. Methods: Two parallel water samples were collected from each point of tap water advanced treatment process in September 2015, November 2015 and January 2016, respectively, and treated by mixing, filtration, concentration, elution, nitrogen blow and re-dissolvement. The samples were analyzed by LC/MS/MS to determine the MC-LR concentration and its removal efficiency during treatment process. The combination of actual water enrichment (including source water enrichment of 50 times and 1 500 times concentrated, finished water enrichment of 50 times and 2 500 times concentrated) and laboratory simulated water (including the mixture of MC-LR and liquid chlorine in the mass ratio of 1∶10, 1∶20, 1∶100 and 1∶1 000, respectively) were used to qualitative analyze the MC-LR degradation products by Orbitrap mass spectrometry. Results: The linearity of MC-LR ranged from 2 to 200 μg/L with the detection limit of 0.007 9 μg/L and the limit of quantification of 0.026 3 μg/L. The recovery rate of MC-LR from different contration in drinking water were from 94.88%-101.47%. The intra-day precision was 2.51%-7.93% and the intra-day precision was 3.24%-8.41%. The average concentration of MC-LR in source water was (0.631±0.262) μg/L, 94.0% of which can be removed by ozone exposure while the concentrate was (0.038±0.016) μg/L, biological pre-treatment and chlorination. The remaining can hardly be removed by sand filtration, ozone exposure, activated carbon, ultrafiltration and other processes. The MC-LR average concentration in the finished water maintained at about (0.036±0.016) μg/L. Degradation products including hydroxy-microcystin, methyl-hydroxy-microcystin, methyl-microcystin were identified in the laboratory simulated water of the mixture of MC-LR and liquid chlorine in the mass ratio of 1∶10. Conclusion: The established MC-LR detection method can be well applied to the monitoring of MC-LR in drinking water due to its simple pre-treatment process and good methodological validation parameters. The degradation products of treatment processes was different.
Collapse
Affiliation(s)
- X L Ding
- Department of Public Health, Wuxi Center for Disease Control and Prevention, Wuxi 214023, China
| | | | | | | | | | | | | |
Collapse
|
49
|
Li Z, Mao YG, Yu C, Gao J, Zhu JY. [Analysis of risk factors of tumor recurrence after liver transplantation for HBV-related hepatocellular carcinoma patients]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:98-101. [PMID: 29804374 DOI: 10.3760/cma.j.issn.1007-3418.2018.02.005] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the characteristics of tumor recurrence after liver transplantation in patients with hepatocellular carcinoma (HCC) associated with hepatitis B and to analyze the risk factors that influence the recurrence and prognosis. Methods: The clinicopathological and survival data of 162 patients with hepatitis B -associated liver cancer who underwent liver transplantation in Peking University People's Hospital from January 2002 to December 2016 were retrospectively analyzed. The postoperative survival rate (OS) and tumor free survival rate (DFS) was statistically analyzed by using the log-rank test. Univariate analysis was performed for various clinicopathological indicators, and the Cox proportional risk regression model was used for multivariate analysis. Results: Univariate analysis showed that the age of the recipients (P(OS) = 0.047, P(DFS) = 0.045), the maximum tumor size (P < 0.001, P(DFS) < 0.001), preoperative AFP levels (P(OS) < 0.001, P(DFS) < 0.001), preoperative HBV-DNA levels (P(OS) = 0.035, P(DFS) = 0.029), vein tumor thrombosis (P(OS) < 0.001, P(DFS) < 0.001), and tumor differentiation degree (P(OS) <0.001, P(DFS) < 0.001) were associated with overall prognosis and tumor recurrence. Multivariate analysis revealed that preoperative AFP levels (P(OS) = 0.014, P(DFS) = 0.013), the maximum tumor size (P(OS) < 0.001, P(DFS) = 0.001), vein tumor thrombosis (P(OS) = 0.012, P(DFS) < 0.004), and tumor differentiation degree (P(OS) = 0.004, P(DFS) = 0.009) were independent risk factors affecting overall prognosis and tumor recurrence. Conclusion: The major prognostic factors linked to tumor biological characteristics after liver transplantation in HBV-related HCC patients are preoperative AFP levels, the largest tumor size, and vein tumor thrombosis and tumor differentiation degree.
Collapse
Affiliation(s)
- Z Li
- Department of Hepatobiliary Surgery, Peking University People's Hospital, Beijing100044, China
| | | | | | | | | |
Collapse
|
50
|
Zhu JY, Hu JJ, Zhang MK, Yu WY, Zheng DW, Wang XQ, Feng J, Zhang XZ. Post-targeting strategy for ready-to-use targeted nanodelivery post cargo loading. Nanoscale 2017; 9:19026-19030. [PMID: 29186218 DOI: 10.1039/c7nr06080g] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Based on boronate formation, this study reports a post-targeting methodology capable of readily installing versatile targeting modules onto a cargo-loaded nanoplatform in aqueous mediums. This permits the targeted nanodelivery of broad-spectrum therapeutics (drug/gene) in a ready-to-use manner while overcoming the PEGylation-dilemma that frequently occurs in conventional targeting approaches.
Collapse
Affiliation(s)
- J Y Zhu
- Dept of Chemistry, Wuhan University, Wuhan, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|