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Hao YJ, Wang AG, Lyu ZX, Chang BQ, Fan JQ, Tao YL, Zhang SC, Zhang ZY. [Posterior arthroscopic subtalar arthrodesis for symptomatic adult talocalcaneal coalition]. Zhonghua Wai Ke Za Zhi 2023; 61:976-981. [PMID: 37767663 DOI: 10.3760/cma.j.cn112139-20230621-00241] [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: 09/29/2023]
Abstract
Objective: To investigate the functional outcomes of posterior arthroscopic subtalar arthrodesis (PASTA) for adult patients presenting with symptomatic talocalcaneal coalition. Methods: The study was a retrospective case-series research.The data of 17 adult patients (17 feet) with symptomatic talocalcaneal coalitions,treated with PASTA from March 2018 to February 2022 in Xuzhou Central Hospital were collected.This procedure involved 10 males and 7 females,aged (42.4±7.5) years(range:31 to 58 years).There were 9 cases on the right side and 7 cases on the left side.According to the Rozansky classification,there were 4 cases of type Ⅰ,7 cases of type Ⅱ, 3 cases of type Ⅲ,3 cases of type Ⅳ.The following items such as wound healing and bony union of the subtalar joint were observed.Clinical assessment was performed using pain visual analogue scale (VAS),American Orthopaedic Foot & Ankle Society (AOFAS) ankle-hindfoot scores and 36-item short form health survey (SF-36) scores.The paired t test was used for data comparison. Results: The follow-up time was (24.8±6.9) months(range:12 to 40 months).There were no complications such as wound infection,deep vein thrombosis,nonunion,or screw breakage.One patient with preoperative spasm,relieved after the second surgical procedure (peroneal brevis tendon lengthening).The union time of the subtalar joint was (8.8±2.2) weeks(range:6 to 12 weeks).At the final follow-up,the VAS decreased from (6.4±1.3) to (1.3±0.9)(t=14.114,P<0.01), the AOFAS ankle-hindfoot score increased from (49.0±8.1) to (90.0±5.1)(t=38.782,P<0.01),and the SF-36 score increased from (50.8±9.5) to (91.0±4.9)(t=20.468,P<0.01). Conclusion: PASTA for adult patients presenting with symptomatic talocalcaneal coalition offers advantages of minimal trauma,fast recovery,and few complications,which is an effective method.
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Affiliation(s)
- Y J Hao
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - A G Wang
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - Z X Lyu
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - B Q Chang
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - J Q Fan
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - Y L Tao
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - S C Zhang
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
| | - Z Y Zhang
- Department of Hand and Foot Microsurgery,Xuzhou Central Hospital,Xuzhou Clinical School of Xuzhou Medical University,Xuzhou 221009,China
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Hao YJ, Tao YL, Fan JQ, Chang BQ, Zhang SC, Zhang ZY, Wang AG. [Arthroscopic treatment of acute closed noninsertional rupture of Achilles tendon]. Zhonghua Wai Ke Za Zhi 2022; 60:540-545. [PMID: 35658340 DOI: 10.3760/cma.j.cn112139-20211012-00486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the clinical efficacy of arthroscopic treatment of acute closed noninsertional rupture of Achilles tendon. Methods: The clinical and imaging data of 30 patients (30 feet) with acute closed noninsertional rupture of Achilles tendon who were treated with all-inside arthroscopic technique at the Department of Hand and Foot Microsurgery,Xuzhou Central Hospital from June 2018 to June 2020 were analyzed retrospectively. There were 26 males and 4 females,aged (38.3±8.5)years old(range:19 to 66 years). There were 22 cases on the right side and 8 cases on the left side. The duration from injury to surgery was (2.1±1.4) days (range:1 to 7 days).All patients were treated with all-inside arthroscopic technique.The function of the ankle and the foot was assessed using visual analogue scale (VAS),the American Orthopaedic Foot & Ankle Society (AOFAS) ankle hindfoot scale and the Achilles tendon total rupture score (ATRS). The Arner-Lindholm score system was used to evaluate the excellent and good rate of clinical effect. Paired sample t test or rank-sum test was used for data comparison. Results: The patients were followed up for (18.6±2.2)months(range:12 to 28 months).All the wounds healed at the first stage.No complication such as infection,sural nerve injury or re-rupture happened.Two patinets felt mild pain after a long time exercise, and were alleviated by microwave therapy and stretching the Achilles tendon consistently.Another patient was unable to do a sustained single stance heel raise,which was recovered after repeated function practice.At the last follow-up,the VAS (M(IQR)) decreased from 6(5) preoperatively to 0(1)(Z=6.512,P<0.01),the AOFAS ankle hindfoot scale improved from 60.6±8.3 preoperatively to 96.3±4.8(t=-29.774,P<0.01),and the ATRS improved from 61.7±7.8 preoperatively to 97.1±2.3 (t=-53.661,P<0.01).According to the Arner-Lindholm score system,27 cases were excellent,3 cases were good,and the excellent and good rate was 100%. Conclusions: The all-inside arthroscopic technique not only ensures the quality of tendon ananstomosis,but also avoids injury to the sural nerve.It has the advantages of small trauma,faster recovery and fewer complications.
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Affiliation(s)
- Y J Hao
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - Y L Tao
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - J Q Fan
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - B Q Chang
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - S C Zhang
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - Z Y Zhang
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - A G Wang
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
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Hao YJ, Wang AG. [Progress and thinking of minimally invasive technique in the treatment of chronic Achilles tendon rupture]. Zhonghua Wai Ke Za Zhi 2022; 60:524-527. [PMID: 35658337 DOI: 10.3760/cma.j.cn112139-20220310-00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In recent years,the application of minimally invasive techniques in the treatment of chronic Achilles tendon rupture has become more and more mature,and it also faces many controversies and challenges.The concept of minimally invasive technique is to minimize the dissection of soft tissue around the Achilles tendon and reduce the occurrence of postoperative wound complications.Minimally invasive small incision surgery does not expose the Achilles tendon stump,and either tendon transposition or tendon transplantation can be achieved using this technique,but there is a risk of accidental injury to the peripheral nerve.There are two main categories of arthroscopic treatment of old Achilles tendon rupture:endoscopic flexor hallucis longus tendon transfer and endoscopic tendon bridging.The former has a certain effect on postoperative flexor digitorum strength,and the latter is used in large segment defects mostly. The scientific and reasonable application of minimally invasive techniques in the treatment of patients with chronic Achilles tendon rupture is the goal and direction of continuous struggle of foot and ankle surgeons in the future.
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Affiliation(s)
- Y J Hao
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
| | - A G Wang
- Department of Hand and Foot Microsurgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou 221009, China
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Fan Y, Geng Y, Wang Y, Deng X, Li G, Zhao J, Ji L, Zhang X, Song Z, Zhang H, Sun X, Gao D, Xie W, Huang H, Hao Y, Zhang Z. Safety and disease flare of autoimmune inflammatory rheumatic diseases: a large real-world survey on inactivated COVID-19 vaccines. Ann Rheum Dis 2021; 81:443-445. [PMID: 34824048 PMCID: PMC8862022 DOI: 10.1136/annrheumdis-2021-221736] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 11/12/2021] [Indexed: 11/03/2022]
Affiliation(s)
- Yong Fan
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Yan Geng
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Yu Wang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Xuerong Deng
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Guangtao Li
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Juan Zhao
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Lanlan Ji
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Xiaohui Zhang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Zhibo Song
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Haoze Zhang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Xiaoying Sun
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Dai Gao
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Wenhui Xie
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Hong Huang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - YanJie Hao
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
| | - Zhuoli Zhang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China
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Zhu XF, Zhang CY, Hao YJ, Bao XL, Huo HN, He HB, Liang C, Xie HT. [Effects of corn stover mulch quantity on mid-infrared spectroscopy of soil organic carbon in a no-tillage agricultural ecosystem]. Ying Yong Sheng Tai Xue Bao 2021; 32:2685-2692. [PMID: 34664440 DOI: 10.13287/j.1001-9332.202108.022] [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: 11/04/2022]
Abstract
We examined carbon chemical composition and stability along soil depth (topsoil 0-5 cm, mid-soil 20-40 cm, and deep soil 60-100 cm) in a no-tillage (NT) agricultural system with various amount of corn stover as mulch for 8 years, including 0 (NT0), 33% (NT33), 67% (NT67) and 100% (NT100), in Northeast China, using mid-infrared spectroscopy. The results showed that, relative to NT0, the treatments of NT33 and NT100 increased polysaccharide content of the top layer and mid-layer soils, the former decreased topsoil carbon component diversity, while the latter maintained soil carbon stability of three soil layers. NT67 increased carbon stability at the deep layer soil. Our results demonstrated that if corn stover resources were sufficient, NT with 100% corn stover mulch could both be beneficial to carbon availability at 0-40 cm soil layer and stability of the whole soil profile. The nonlinear relationship between the amount of corn stover mulch and the mid-infrared spectral characteristics of the soil called for further research on the microbial-control mechanism over soil carbon cycling under different amounts of corn stover mulch.
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Affiliation(s)
- Xue-Feng Zhu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,Liaoning Province Key Laboratory of Conservation Tillage and Ecological Agriculture, Shenyang 110016, China
| | - Chun-Yu Zhang
- Lishu Agricultural Technology Extension Station, Lishu 136500, Jilin, China
| | - Yan-Jie Hao
- Lishu Agricultural Technology Extension Station, Lishu 136500, Jilin, China
| | - Xue-Lian Bao
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,Liaoning Province Key Laboratory of Conservation Tillage and Ecological Agriculture, Shenyang 110016, China
| | - Hai-Nan Huo
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,Liaoning Province Key Laboratory of Conservation Tillage and Ecological Agriculture, Shenyang 110016, China
| | - Hong-Bo He
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,Liaoning Province Key Laboratory of Conservation Tillage and Ecological Agriculture, Shenyang 110016, China
| | - Chao Liang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,Liaoning Province Key Laboratory of Conservation Tillage and Ecological Agriculture, Shenyang 110016, China
| | - Hong-Tu Xie
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.,Liaoning Province Key Laboratory of Conservation Tillage and Ecological Agriculture, Shenyang 110016, China
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Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease with extreme heterogeneity and potentially involvement of any organ or system. Numerous unanswered questions and challenges in SLE always prompt further exploration. In 2019, great progress in various aspects of SLE emerged. Both the classification criteria and management recommendation for SLE were updated. New promising medications have been widely developed and tested, although subsequent clinical studies are warranted. As an emerging number of most notable studies in SLE were published in both clinical area and basic research in 2019, we aim to summarize the highest quality data on SLE regarding novel insights of pathogenesis, updated recommendations, hot-spot issues on clinical manifestations, new understanding of disease prognosis, and most importantly, the therapeutic advances in SLE in this review.
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Affiliation(s)
- Yong Fan
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
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Ji LL, Hao YJ, Zhang ZL. [A case of gout secondary to primary myelofibrosis]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:1117-1119. [PMID: 30562793] [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: 06/09/2023]
Abstract
A 52-year-old man was referred to our department with a 2-year history of polyarthritis. He was diagnosed as gout due to acute arthritis of bilateral feet dorsum 2 years ago,but he didn't receive any standard treatment. 1 year ago,there were more and more joints evolved during the gout attack, and many subcutaneous nodules occurred. When he presented to our clinic 1 month ago,the urate acid level was as high as 715 μmol/L. Moreover, we could find bone erosion in the X rays of his hand and foot,as well as synovitis,double contour sign and tophus on the ultrasound examination. The diagnosis of gout was clearly and definitely. However, he had leukocytosis and thrombocytosis for 4 years in the past history, and the urate acid level was only 400 μmol/L at that time. He also had well-controlled hypertension. The family history was unremarkable. Furthermore, we found megalosplenia on his physical examination. The bone marrow examination showed myelofibrosis and JAK2 V617F gene was positive. He was diagnosed as primary myelofibrosis and treated with interferon-α, together with urate acid-lowing therapy (febuxostat 60 mg once daily). Following-up for 1 year,the dosage of febuxostat decreased to 40 mg once daily, and the patient didn't have gout attack again, some of the tophus diminished, and the urate acid level ranged from 400 to 500 μmol/L. Gout is a common disease in clinical practice,usually combined with metabolic syndrome,chronic renal failure and specific drugs using (diuretic and calcineurin inhibitors). However,it is relatively rare to see gout associated with myeloproliferative diseases, including polycythemia vera, primary thrombocythemia, primary myelofibrosis and chronic myelocytic leukemia. In these diseases, the turnover of nucleic acids is greatly augmented, and an excess of purine metabolites, including uric acid, is released. In the natural course of gout, the appearance of tophus from the first onset of arthritis usually takes several years. This patient only had one traditional risk factor, but his urate acid level was remarkably high and he developed tophus in a short term. After treatment of primary myelofibrosis, the symptom of gout partially alleviated. Careful physical examination and medical history taking lead to the diagnosis of secondary gout, which should be reminded in the daily practice.
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Affiliation(s)
- L L Ji
- Department of Rheumatology and Immunology,Peking University First Hospital, Beijing 100034, China
| | - Y J Hao
- Department of Rheumatology and Immunology,Peking University First Hospital, Beijing 100034, China
| | - Z L Zhang
- Department of Rheumatology and Immunology,Peking University First Hospital, Beijing 100034, China
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Qi YY, Zhou XJ, Nath SK, Sun C, Wang YN, Hou P, Mu R, Li C, Guo JP, Li ZG, Wang G, Xu HJ, Hao YJ, Zhang ZL, Yue WH, Zhang H, Zhao MH, Zhang H. A Rare Variant (rs933717) at FBXO31-MAP1LC3B in Chinese Is Associated With Systemic Lupus Erythematosus. Arthritis Rheumatol 2018; 70:287-297. [PMID: 29044928 DOI: 10.1002/art.40353] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 10/10/2017] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Recent evidence from genetic, cell biology, and animal model studies has suggested a pivotal role of autophagy in mediating systemic lupus erythematosus (SLE). However, the genetic basis has not yet been thoroughly examined. Therefore, the aim of the present study was to identify additional susceptibility variants in autophagy-related genes along with their functional significance. METHODS First, we performed a gene family-based genetic association analysis in SLE patients with the use of ImmunoChip arrays, and then we selected the most strongly associated polymorphisms for replication in additional cohorts. To identify regulatory clues, we analyzed publicly available blood expression quantitative trait locus data and Encyclopedia of DNA Elements data on transcription factor binding sites and cell type-specific differential expression. Functional effects were tested by luciferase reporter assays, electrophoretic mobility shift assays, and differential gene expression assays. RESULTS In 14,474 samples, we observed that the rare Chinese variant rs933717T was associated with susceptibility to SLE (0.11% in cases versus 0.87% in controls; P = 2.36 × 10-10 , odds ratio 0.13). The rs933717 risk allele C correlated with increased MAP1LC3B expression; increased MAP1LC3B messenger RNA was observed in SLE patients and in lupus-prone mice. In reporter gene constructs, the risk allele increased luciferase activity up to 2.7-3.8-fold in both HEK 293T and Jurkat cell lines, and the binding of HEK 293T and Jurkat cell nuclear extracts to the risk allele was also increased. CONCLUSION We observed a likely genetic association between light chain 3B, a widely used marker for autophagy, and susceptibility to SLE.
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Affiliation(s)
- Yuan-Yuan Qi
- Peking University First Hospital, Beijing, China
| | - Xu-Jie Zhou
- Peking University First Hospital, Beijing, China
| | | | - Celi Sun
- Oklahoma Medical Research Foundation, Oklahoma City
| | - Yan-Na Wang
- Peking University First Hospital, Beijing, China
| | - Ping Hou
- Peking University First Hospital, Beijing, China
| | - Rong Mu
- Peking University People's Hospital, Beijing, China
| | - Chun Li
- Peking University People's Hospital, Beijing, China
| | | | - Zhan-Guo Li
- Peking University People's Hospital, Beijing, China
| | - Geng Wang
- Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Hu-Ji Xu
- Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Yan-Jie Hao
- Peking University First Hospital, Beijing, China
| | | | - Wei-Hua Yue
- Peking University Sixth Hospital, Beijing, China
| | | | | | - Hong Zhang
- Peking University First Hospital, Beijing, China
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Li R, Zhao JX, Su Y, He J, Chen LN, Gu F, Zhao C, Deng XR, Zhou W, Hao YJ, Xue Y, Liu HX, Zhao Y, Zou QH, Liu XY, Zhu P, Sun LY, Zhang ZL, Zou HJ, Li XF, Liu Y, Fang YF, Keystone E, McInnes IB, Li ZG. High remission and low relapse with prolonged intensive DMARD therapy in rheumatoid arthritis (PRINT): A multicenter randomized clinical trial. Medicine (Baltimore) 2016; 95:e3968. [PMID: 27428186 PMCID: PMC4956780 DOI: 10.1097/md.0000000000003968] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES To determine whether prolonged intensive disease-modifying antirheumatic drug (DMARD) treatment (PRINT) leads to high remission and low relapse rates in patients with severe rheumatoid arthritis (RA). METHODS In this multicenter, randomized and parallel treatment trial, 346 patients with active RA (disease activity score (28 joints) [DAS28] (erythrocyte sedimentation rate [ESR]) > 5.1) were enrolled from 9 centers. In phase 1, patients received intensive treatment with methotrexate, leflunomide, and hydroxychloroquine, up to 36 weeks, until remission (DAS28 ≤ 2.6) or a low disease activity (2.6 < DAS28 ≤ 3.2) was achieved. In phase 2, patients achieving remission or low disease activity were followed up with randomization to 1 of 2 step-down protocols: leflunomide plus hydroxychloroquine combination or leflunomide monotherapy. The primary endpoints were good European League Against Rheumatism (EULAR) response (DAS28 (ESR) < 3.2 and a decrease of DAS28 by at least 1.2) during the intensive treatment and the disease state retention rate during step-down maintenance treatment. Predictors of a good EULAR response in the intensive treatment period and disease flare in the maintenance period were sought. RESULTS A good EULAR response was achieved in 18.7%, 36.9%, and 54.1% of patients at 12, 24, and 36 weeks, respectively. By 36 weeks, 75.4% of patients achieved good and moderate EULAR responses. Compared with those achieving low disease activity and a high health assessment questionnaire (HAQ > 0.5), patients achieving remission (DAS28 ≤ 2.6) and low HAQ (≤ 0.5) had a significantly higher retention rate when tapering the DMARDs treatment (P = 0.046 and P = 0.01, respectively). There was no advantage on tapering to combination rather than monotherapy. CONCLUSIONS Remission was achieved in a proportion of patients with RA receiving prolonged intensive DMARD therapy. Low disease activity at the start of disease taper leads to less subsequent flares. Leflunomide is a good maintenance treatment as single treatment.
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Affiliation(s)
- Ru Li
- Department of Rheumatology and Immunology, Peking University People's Hospital
| | - Jin-Xia Zhao
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing
| | - Yin Su
- Department of Rheumatology and Immunology, Peking University People's Hospital
| | - Jing He
- Department of Rheumatology and Immunology, Peking University People's Hospital
| | - Li-Na Chen
- Department of Clinical Immunology, Fourth Military Medical University Xijing Hospital, Xi’an
| | - Fei Gu
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing
| | - Cheng Zhao
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing
| | - Xue-Rong Deng
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing
| | - Wei Zhou
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing
| | - Yan-Jie Hao
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing
| | - Yu Xue
- Department of Rheumatology and Immunology, Fudan University Huashan Hospital, Shanghai
| | - Hua-Xiang Liu
- Department of Rheumatology and Immunology, Shandong University Qilu Hospital, Jinan
| | - Yi Zhao
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu
| | - Qing-Hua Zou
- Department of Rheumatology and Immunology, Third Military Medical University Southwest Hospital, Chongqing, China
| | - Xiang-Yuan Liu
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing
| | - Ping Zhu
- Department of Clinical Immunology, Fourth Military Medical University Xijing Hospital, Xi’an
| | - Ling-Yun Sun
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing
| | - Zhuo-Li Zhang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing
| | - He-Jian Zou
- Department of Rheumatology and Immunology, Fudan University Huashan Hospital, Shanghai
| | - Xing-Fu Li
- Department of Rheumatology and Immunology, Shandong University Qilu Hospital, Jinan
| | - Yi Liu
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu
| | - Yong-Fei Fang
- Department of Rheumatology and Immunology, Third Military Medical University Southwest Hospital, Chongqing, China
| | - Edward Keystone
- The Rebecca MacDonald Centre for Arthritis and Autoimmune Diseases, Mount Sinai Hospital, University of Toronto, Toronto, Canada
- Correspondence: Zhan-Guo Li, Department of Rheumatology and Immunology, Peking University People's Hospital, 11 Xizhimen South St., Beijing 100044, China (e-mail: )
| | - Iain B. McInnes
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Correspondence: Zhan-Guo Li, Department of Rheumatology and Immunology, Peking University People's Hospital, 11 Xizhimen South St., Beijing 100044, China (e-mail: )
| | - Zhan-Guo Li
- Department of Rheumatology and Immunology, Peking University People's Hospital
- Correspondence: Zhan-Guo Li, Department of Rheumatology and Immunology, Peking University People's Hospital, 11 Xizhimen South St., Beijing 100044, China (e-mail: )
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Ren LM, Li R, Chen LN, Zhu P, Gu F, Sun LY, Zhao JX, Liu XY, Guo JL, Bi LQ, Hao YJ, Zhang ZL, Mei YF, Zhang ZY, Liu HX, Li XF, Luo Y, Fang YF, Li ZG, Su Y. Efficacy and safety of weekly leflunomide for the treatment of early rheumatoid arthritis: a randomized, multi-center study. Int J Rheum Dis 2015; 19:651-7. [PMID: 26268935 DOI: 10.1111/1756-185x.12677] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li-Min Ren
- Department of Rheumatology and Immunology; People's Hospital of Peking University; Beijing China
| | - Ru Li
- Department of Rheumatology and Immunology; People's Hospital of Peking University; Beijing China
| | - Li-Na Chen
- Department of Rheumatology; Xijing Hospital; Fourth Military Medical University; Xian China
| | - Ping Zhu
- Department of Rheumatology; Xijing Hospital; Fourth Military Medical University; Xian China
| | - Fei Gu
- Department of Rheumatology; Nanjing Drum Tower Hospital; Nanjing China
| | - Ling-Yun Sun
- Department of Rheumatology; Nanjing Drum Tower Hospital; Nanjing China
| | - Jin-Xia Zhao
- Department of Rheumatology; Peking University Third Hospital; Beijing China
| | - Xiang-Yuan Liu
- Department of Rheumatology; Peking University Third Hospital; Beijing China
| | - Jia-Long Guo
- Department of Rheumatology; China-Japan Union Hospital of Jilin University; Changchun China
| | - Li-Qi Bi
- Department of Rheumatology; China-Japan Union Hospital of Jilin University; Changchun China
| | - Yan-Jie Hao
- Department of Rheumatology; Peking University First Hospital; Beijing China
| | - Zhuo-Li Zhang
- Department of Rheumatology; Peking University First Hospital; Beijing China
| | - Yi-Fang Mei
- Department of Rheumatology; the First Hospital Affiliated to Harbin Medical University; Harbin China
| | - Zhi-Yi Zhang
- Department of Rheumatology; the First Hospital Affiliated to Harbin Medical University; Harbin China
| | - Hua-Xiang Liu
- Department of Rheumatology; Qi Lu Hospital of Shandong University; Jinan China
| | - Xing-Fu Li
- Department of Rheumatology; Qi Lu Hospital of Shandong University; Jinan China
| | - Yan Luo
- Department of Rheumatology; Southwest Hospital; the Third Military Medical University; Chongqing China
| | - Yong-Fei Fang
- Department of Rheumatology; Southwest Hospital; the Third Military Medical University; Chongqing China
| | - Zhan-Guo Li
- Department of Rheumatology and Immunology; People's Hospital of Peking University; Beijing China
| | - Yin Su
- Department of Rheumatology and Immunology; People's Hospital of Peking University; Beijing China
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11
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Wang Y, Hao YJ, Zhao J, Zhang ZL. [Systemic lupus erythmatosus and panniculitis presenting as multiple ulcers: one case report]. Beijing Da Xue Xue Bao Yi Xue Ban 2015; 47:352-354. [PMID: 25882960] [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: 06/04/2023]
Abstract
A 36-year-old woman had an 8-year history of systemic lupus erythematosus (SLE) and was being treated with 10 mg/d of prednisone. She presented with a 6-month history of intermittent fever and multiple painful multi skin erythematous macules in her button, hips and extremities that had slowly enlarged to 8 cm×4 cm in diameter. The lesions started as painful erythematous macules, which eventually ulcerated and scared. Laboratory tests showed leukopenia, protenuria, positive anti-double strand DNA and hypocomplementemia. Cultures of the bottom ulcer were E. Coli, fugus and Tuberculous mycobacteria were both negative. Biopsy was performed and revealed necrosis of epidermis, thrombus and cellulose degeneration in epidermis with neutrophils karyorrhexis and vasculitis. Her SLE was active, so she was prescribed antibiotics for 2 weeks and prednisone was added to 60 mg/d for a month. However her skin ulcers did not relieve. When prednisone was added to 120 mg/d with combination therapy of cyclophosphamide and hydroxychloroquine, her skin ulcer cicatrized gradually.
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Affiliation(s)
- Y Wang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - Y J Hao
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - J Zhao
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - Z L Zhang
- Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
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Hao YJ, Jiang X, Zhou W, Wang Y, Gao L, Wang Y, Li GT, Hong T, Huo Y, Jing ZC, Zhang ZL. Connective tissue disease-associated pulmonary arterial hypertension in Chinese patients. Eur Respir J 2014; 44:963-72. [DOI: 10.1183/09031936.00182813] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We sought to investigate the characteristics, survival and risk factors for mortality in Chinese patients with connective tissue disease (CTD)-associated pulmonary arterial hypertension (APAH) in modern therapy era.129 consecutive adult patients who visited one of three referral centres in China with a diagnosis of CTD-APAH confirmed by right heart catheterisation during the previous 5 years were enrolled. The end-point was all-cause death or data censoring.Systemic lupus erythematosus was the most common underlying CTD (49%) and systemic sclerosis just accounted for 6% in this cohort. The overall survival at 1 and 3 years was 92% and 80%, respectively. Pericardial effusion, a shorter 6-min walk distance, lower mixed venous oxygen saturation, higher pulmonary vascular resistance (PVR) and alkaline phosphatase (ALP), and lower total cholesterol levels were all associated with a higher risk of death among the study population. Higher PVR and ALP were independent predictors of mortality.In conclusion, unlike in western patients, systemic lupus erythematosus is the most common underlying disease in Chinese patients with CTD-APAH. The survival of Chinese patients with CTD-APAH in the modern treatment era is similar to that in western countries. Elevated PVR and ALP are independent risk factors for poor outcomes.
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13
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Wang Y, Zhou W, Hao YJ, Li GT, Deng XR, Zhao J, Zhang ZL. [Quantitative ultrasound scans of the calcaneus: a useful tool for screening osteoporosis in patients with connective tissue disease]. Beijing Da Xue Xue Bao Yi Xue Ban 2013; 45:766-769. [PMID: 24136275] [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: 06/02/2023]
Abstract
OBJECTIVE To evaluate the ability of calcaneus quantitative ultrasound (QUS) to diagnose osteoporosis in connective tissue disease (CTD) patients. METHODS In the study, 126 female patients with established CTD underwent dual-energy X-ray absorptiometry (DXA) of the lumber and right hip and QUS of the right heel at the same time. Sensitivity, specificity, as well as positive and negative predictive values were calculated to determine the correlation between cases of osteoporosis detected by the QUS heel scan and by DXA. RESULTS The mean age of the 126 patients was (43.4 ± 19.8) years (ranging from 30.0 to 80.0 years). Based on their DXA data, 36 (28.6%) patients had normal bone mineral density (BMD, T score ≥ -1.0), 90 (71.4%) patients had abnormal BMD. In abnormal BMD patients, 45 (35.7%) had osteopenia (-2.5 < T score<-1.0), and 42 (33.3%) were osteoporotic (T score ≤ -2.5), while 3 (2.4%) patients had fragile fracture. Broadband ultrasound attenuation (BUA), speed of sound (SOS) and stiffness index (SI) were all significantly different between osteopenia and the normal group when scanning with QUS. QUS T score was positively correlated with DXA T score, both at lumber and right hip respectively (r=0.491, 0.648, P<0.01). After correction by age and BMI, QUS T score remained positively correlated with DXA T score by partial correlation analysis (Pearson partial vertebral r=0.430, P=0.006; right hip r=0.593, P<0.001). The area under the ROC curve for diagnosis of lumber and hip osteoporosis were 0.836 (95%CI: 0.695, 0.977) and 0.647 (95%CI: 0.579, 0.957) separately. The sensitivity and specificity for identifying osteoporosis in lumber were 70% and 83.3% respectively when the T score threshold of QUS was defined as -1.5; however, the sensitivity and the specificity for identifying osteoporosis at right hip were 72.7% and 88.9% when T score threshold of QUS was defined as -1.85. The best SI threshold was defined as 76 for identifying osteoporosis, with sensitivity being 0.800 and specificity 0.741. CONCLUSION Our study confirmed that QUS measurements performed at calcaneus with quantitative ultrasound bone analysis were capable of screening osteoporosis defined by axial BMD using DXA in female CTD patients.
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Affiliation(s)
- Yu Wang
- Department of Rheumatology and Immunology, Peking University First Hospital, Beijing 100034, China
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14
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Bai H, Lan JP, Gan Q, Wang XY, Hou MM, Cao YH, Li LY, Liu LJ, Hao YJ, Yin CC, Wu L, Zhu LH, Liu GZ. Identification and expression analysis of components involved in rice Xa21-mediated disease resistance signalling. Plant Biol (Stuttg) 2012; 14:914-922. [PMID: 22672582 DOI: 10.1111/j.1438-8677.2012.00585.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Rice Xa21 gene encodes a receptor-like kinase that confers broad-spectrum resistance against Xanthomonas oryzae pv. oryzae (Xoo). Recently, a number of genes involved in the Xa21-mediated disease resistance pathway have been identified. Based on our previous data and the literature, we chose 16 candidate proteins and made corresponding antibodies. Using Western blotting, we systematically investigated the expression profile of the proteins in Xa21-mediated disease resistance response. We found nine proteins with altered expression. We further compared their expression in resistance, susceptible and mock responses, and found that GST expression was up-regulated during the resistance process, indicating GST is a positive regulator in resistance responses. ATPsB expression was down-regulated during both the resistance and susceptible response processes, although it was higher in the resistance response than that in the susceptible response. The total amount of MYB, GAPDH, CatB, Trx and NB-ARC proteins was lower in the resistance than in the susceptible response, but their abundance per unit bacteria in the resistance response was still higher than in the susceptible response, suggesting that these proteins might be positive regulators in the resistance response. In addition, expression of another ERF was induced by inoculation with bacterial blight pathogen, and expression of Zf-LSD1 was activated by wounding stress alone. Interestingly, most proteins showed similar altered expression patterns in the resistance and susceptible responses, but differed to some extents, implying that both responses might share common molecular mechanisms. This study revealed evidence of resistance-related protein expression, providing a foundation for better understanding of their functions.
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Affiliation(s)
- H Bai
- Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
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Hao YJ, Zhou W, Jiang X, Wang Y, Wang Y, Gao L, Li GT, Hong T, Jing ZC, Zhang ZL. THE BASELINE CHARACTERISTICS AND SURVIVAL OF CHINESE PATIENTS WITH CONNECTIVE TISSUE DISEASE ASSOCIATED PULMONARY ARTERIAL HYPERTENSION. Heart 2012. [DOI: 10.1136/heartjnl-2012-302920y.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Hao YJ, Jing YJ, Qu H, Li DS, Du RQ. Purification and characterization of a thermal stable antimicrobial protein from housefly larvae, Musca domestica, induced by ultrasonic wave. Acta Biol Hung 2008; 59:289-304. [PMID: 18839696 DOI: 10.1556/abiol.59.2008.3.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/19/2022]
Abstract
This work describes the induction, purification and partial biochemical characterizations of an antimicrobial protein from the housefly larvae induced by ultrasonic wave. It has been purified to apparent homogeneity by ammonium sulfate precipitation followed by Sephadex G-75, Bio-gel P6 gel filtration, and CM-Sepharose Fast Flow cation exchange chromatography. The protein is a cationic protein with an apparent molecular weight of 16315 Da determined by no-denaturing electrophoresis and SDS-PAGE, respectively. Biochemical profile assays show that this protein has good thermal stability, and repeatedly frozen and defrosted durability. The optimum pH for antimicrobial activity is around pH5. The antimicrobial range of the protein includes Gram-positive, Gram-negative bacteria and some fungi. Results of the membrane permeability assays suggest that the probable mode of action of this protein is membrane-disrupting mechanism.
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Affiliation(s)
- Y J Hao
- Department of Cell and Genetics, Genetic Engineering Laboratory, College of Life Science, Nankai University, Tian Jin 300071, China.
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17
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Hu CY, Ding WH, Han XN, Chu SY, Hao YJ, Bu DF. [In vivo interleukin-10 gene transfer down-regulates myocardial matrix metalloproteinase and myocardial collagen expressions in rats with acute myocardial infarction]. Zhonghua Xin Xue Guan Bing Za Zhi 2008; 36:243-248. [PMID: 19099983] [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: 05/27/2023]
Abstract
OBJECTIVE We investigated the in vivo effects of recombinant adenovirus-associated virus type-2 (AAV-2) mediated interleukin-10 (IL-10) gene transfer on the expression of matrix metalloproteinase (MMP)-2, 9, tissue inhibitor of metalloproteinase (TIMP)-1, collagen type I and type III in a rat acute myocardial infarction model. METHOD Male Sprague-Dawley (SD) rats were randomly divided into three groups (each n = 6): sham operation group, MI/AAV2 group, and MI/AAV2-IL-10 group (10(10) vg/ml x 0.1 ml injection at peri-infarct regions immediately post MI). Five days later, the expressions of MMP-2 and MMP-9 were measured by RT-PCR, Western blot and zymography. The expression of TIMP-1 was measured by RT-PCR and Western blot. Collagen type I and type III were assessed by RT-PCR and immunohistochemical stain. RESULTS The myocardial expressions of MMP-2, MMP-9 and collagen contents in MI/AAV2 group were significantly increased than those in sham operation group. Myocardial expressions of MMP-2, MMP-9 were significantly decreased and the expression of TIMP-1 significantly increased in the MI/AAV2-IL-10 group than those in MI/AAV2 group. Moreover, the expressions of collagen type I, collagen type III and the ratio of I/III collagen in border zones of infarcted myocardium were decreased by 47.6% (P < 0.01), 23.6% (P < 0.05), and 17.9% (P < 0.05) respectively, while the expression of TIMP-1 increased by 73.1%(P < 0.05) in MI/AAV2-IL-10 group compared to MI/AAV2 group. CONCLUSION In vivo myocardial IL-10 transfer reduced myocardial MMP and collagen expression and increasing the TIMP expression.
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Affiliation(s)
- Chun-Yang Hu
- Department of Cardiology, Peking University First Hospital, Beijing 100034, China
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Jing YJ, Hao YJ, Qu H, Shan Y, Li DS, Du RQ. Studies on the antibacterial activities and mechanisms of chitosan obtained from cuticles of housefly larvae. Acta Biol Hung 2007; 58:75-86. [PMID: 17385545 DOI: 10.1556/abiol.57.2007.1.7] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [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: 11/19/2022]
Abstract
Chitosan was obtained from cuticles of the housefly (Musca domestica) larvae. Antibacterial activities of different Mw chitosans were examined against six bacteria. Antibacterial mechanisms of chitosan were investigated by measuring permeability of bacterial cell membranes and observing integrity of bacterial cells. Results show that the antibacterial activity of chitosan decreased with increase in Mw. Chitosan showed higher antibacterial activity at low pH. Ca2+ and Mg2+ could markedly reduce the antibacterial activity of chitosan. The minimum inhibitory concentrations of chitosans ranged from 0.03% - 0.25% and varied with the type of bacteria and Mw of chitosan. Chitosan could cause leakage of cell contents of the bacteria and disrupt the cell wall.
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Affiliation(s)
- Y J Jing
- Department of Genetics, College of Life Science, Nankai University, Tianjin 300071, PR China.
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Han XD, Zhang YF, Zheng K, Zhang XN, Zhang Z, Hao YJ, Guo XY, Yuan J, Wang ZL. Low-temperature in situ large strain plasticity of ceramic SiC nanowires and its atomic-scale mechanism. Nano Lett 2007; 7:452-7. [PMID: 17298014 DOI: 10.1021/nl0627689] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Large strain plasticity is phenomenologically defined as the ability of a material to exhibit an exceptionally large deformation rate during mechanical deformation. It is a property that is well established for metals and alloys but is rarely observed for ceramic materials especially at low temperature ( approximately 300 K). With the reduction in dimensionality, however, unusual mechanical properties are shown by ceramic nanomaterials. In this Letter, we demonstrated unusually large strain plasticity of ceramic SiC nanowires (NWs) at temperatures close to room temperature that was directly observed in situ by a novel high-resolution transmission electron microscopy technique. The continuous plasticity of the SiC NWs is accompanied by a process of increased dislocation density at an early stage, followed by an obvious lattice distortion, and finally reaches an entire structure amorphization at the most strained region of the NW. These unusual phenomena for the SiC NWs are fundamentally important for understanding the nanoscale fracture and strain-induced band structure variation for high-temperature semiconductors. Our result may also provide useful information for further studying of nanoscale elastic-plastic and brittle-ductile transitions of ceramic materials with superplasticity.
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Affiliation(s)
- X D Han
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, 100022 Beijing, China
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Abstract
Shoot tips of three apple genotypes, namely, Malus pumila cv. M26, Gala, and Hokkaido No. 9, were successfully cryopreserved using a modified encapsulation-dehydration method. As a result, in addition to a high survival rate and regeneration rate, the capacity of shoots regenerated from cryopreserved samples to root was enhanced. Eight M26 single-bud sibling lines were used to assess genetic stability. Although cytological examination revealed a ploidy difference in the noncryopreserved control, the ploidy constitution remained relatively stable during the period of cryopreservation. Amplified fragment length polymorphism (AFLP) assay was performed to detect DNA-level variation. No change in DNA fragment pattern and number was observed between the control and the cryopreserved samples. In addition, methylation-sensitive amplified polymorphism (MSAP) assay was carried out to investigate the DNA methylation status during the period of cryopreservation. It was found that cryopreservation induced a decrease in DNA methylation level.
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Affiliation(s)
- Y J Hao
- National Key Laboratory of Crop Genetic Improvement, Wuhan 430070, People's Republic of China.
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Hao YJ, Natsume A, Mizuno M, Taniguchi K, Wakabayashi T, Yoshida J. [Correlation between DNA topoisomerase II alpha expression and sensitivity to etoposide in human glioma cell lines]. Gan To Kagaku Ryoho 2000; 27:1403-9. [PMID: 10969596] [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: 02/17/2023]
Abstract
The expression of topoisomerase II alpha (Topo II alpha) was investigated in six human glioma cell lines as a function of doubling time, cell cycle distribution, and sensitivity to an antineoplastic agent, etoposide (ETP). The Topo II alpha level was determined by immunohistochemical and flow cytometric studies using monoclonal antibody, 8D2, specific for Topo II alpha. In all cell lines, the Topo II alpha level correlated directly with sensitivity to ETP, but not with doubling time or percentage of cells in any phase of the cell cycle. These findings suggest that the cytocidal activity of ETP may be mediated by qualitative and quantitative changes in Topo II alpha in human glioma cells. We speculate that better knowledge of Topo II alpha expression in surgical specimens may lead to more individualized use of ETP in patients with malignant glioma.
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Affiliation(s)
- Y J Hao
- Dept. of Neurosurgery, Nagoya University School of Medicine
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Huo HQ, Hao YJ, Deng XX. [Induction of embryogenic callus of loose skin mandarins]. Shi Yan Sheng Wu Xue Bao 1999; 32:289-95. [PMID: 12548811] [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: 02/28/2023]
Abstract
Young ovules from 3 cultivars and undeveloped ovules in mature fruits from 8 cultivars of loose skin mandarin of Citrus were cultured on 4 different media respectively to induce embryogenic calli. Results showed that the combination of EME(MT + 500 mg/L malt extract) and MKT (EME + 10 mg/L KT) media performed well in the induction of embryogenic calli from young ovules; MGS(EME + 1 mg/L GA3 + 40 mg/L sulfate adenine) medium was better than MDB (MT + 0.01 mg/L 2,4-D + 0.1 mg/L BA) medium in inducing calli from the undeveloped ovules, and the darkness was conducive to the induction of embryogenic calli. There was no chromosome number variation in the induced calli. All of the examined cells were diploid with 2n = 2x = 18 chromosomes.
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Affiliation(s)
- H Q Huo
- National Laboratory of Crop Genetic Improvement, Citrus Research Institute, Huazhong Agricultural University, Wuhan 430070
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