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Zeng R, Ye Y, Ou H, Hua Y, Su Y, Hu J, Lu H, Tang J, Liu J, Xiao T, Wu Z, Tang W, Li ZY, Lin SJ, Zhuang S, Xu G, Lin Y, Li Y, Huang F, Zhang HT. Early osteoarthritis diagnosis based on near-infrared spectroscopy combined with aquaphotomics. Spectrochim Acta A Mol Biomol Spectrosc 2023; 302:123120. [PMID: 37453381 DOI: 10.1016/j.saa.2023.123120] [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] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/09/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
Osteoarthritis (OA) is the most common joint disease and the leading cause of disability in elderly individuals. Despite rapid advances in imaging techniques, early OA diagnosis remains a clinical challenge. In the present study, the feasibility of early OA diagnosis was explored via near-infrared spectroscopy (NIRS) combined with aquaphotomics. Synovial fluid samples from 65 cases of OA categorized as mild, moderate, and severe according to theKellgrenandLawrence classification criteria were analyzed via NIRS. The 1st overtone of water (1300-1600 nm) was considered as the research object for an aquaphotomics model, and aquagrams of the mild, moderate, and severe OA cases were generated using 12 water absorption patterns for early OA diagnosis.The aquaphotomics results exhibited clear differences in the region of 1300-1500 nm, and the number of hydrogen bonds of different water species (1412,1424, 1482, and 1496 nm) evidently correlated with OA occurrence and development. With OA progression, the absorption intensity of water molecules without hydrogen bonds (1412 nm/1424 nm) became stronger, while the absorption intensity of water molecules with four hydrogen bonds (1482 nm/1496 nm) decreased.These results together reveal that the established accurate and rapid early OA diagnosis model based on NIRS combined with aquaphotomics is effective and feasible, and that the number of hydrogen bonds can be used as a biomarker for early OA diagnosis.
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Affiliation(s)
- Rui Zeng
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Yongsheng Ye
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China; Department of Orthopedics, Dongguan Hospital of Traditional Chinese Medicine, Dongguan, Guangdong 523000, China
| | - Haisheng Ou
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Yisheng Hua
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Yuancui Su
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Junhui Hu
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Hanglin Lu
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Jian Tang
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Jun Liu
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Teng Xiao
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Zhaosheng Wu
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Wang Tang
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Zhen-Yan Li
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Su-Juan Lin
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Shabin Zhuang
- Department of Orthopedics, Dongguan Hospital of Traditional Chinese Medicine, Dongguan, Guangdong 523000, China
| | - Guisheng Xu
- Department of Joint and Sports Medicine, the First People's Hospital of Zhaoqing, Zhaoqing, Guangdong 526000, China
| | - Yuning Lin
- Department of Joint and Sports Medicine, the First People's Hospital of Zhaoqing, Zhaoqing, Guangdong 526000, China
| | - Yuanpeng Li
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, China.
| | - Furong Huang
- Department of Optoelectronic Engineering, Jinan University, Guangzhou, Guangdong 510632, China.
| | - Huan-Tian Zhang
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China.
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Hu W, Li Z, Ou H, Wang X, Wang Q, Tao Z, Huang S, Huang Y, Wang G, Pan X. Novosphingobium album sp. nov., Novosphingobium organovorum sp. nov. and Novosphingobium mangrovi sp. nov. with the organophosphorus pesticides degrading ability isolated from mangrove sediments. Int J Syst Evol Microbiol 2023; 73. [PMID: 37115596 DOI: 10.1099/ijsem.0.005843] [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: 04/29/2023] Open
Abstract
Members of the genus Novosphingobium were frequently isolated from polluted environments and possess great bioremediation potential. Here, three species, designated B2637T, B2580T and B1949T, were isolated from mangrove sediments and might represent novel species in the genus Novosphingobium based on a polyphasic taxonomy study. Phylogenomic analysis revealed that strains B2580T, B1949T and B2637T clustered with Novosphingobium naphthalenivorans NBRC 102051T, 'N. profundi' F72 and N. decolorationis 502str22T, respectively. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between isolates and their closely related species were less than 94 and 54 %, respectively, all below the threshold of species discrimination. The sizes of the genomes of isolates B2580T, B2637T and B1949T ranged from 4.4 to 4.6 Mb, containing 63.3-66.4 % G+C content. Analysis of their genomic sequences identified genes related to pesticide degradation, heavy-metal resistance, nitrogen fixation, antibiotic resistance and sulphur metabolism, revealing the biotechnology potential of these isolates. Except for B2637T, B1949T and B2580T were able to grow in the presence of quinalphos. Results from these polyphasic taxonomic analyses support the affiliation of these strains to three novel species within the genus Novosphingobium, for which we propose the name Novosphingobium album sp. nov. B2580T (=KCTC 72967T=MCCC 1K04555T), Novosphingobium organovorum sp. nov. B1949T (=KCTC 92158T=MCCC 1K03763T) and Novosphingobium mangrovi sp. nov. B2637T (KCTC 72969T=MCCC 1K04460T).
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Affiliation(s)
- Wenjin Hu
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
- National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Key Laboratory of Bio-refinery, Guangxi Biomass Engineering Technology Research Center, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Zhe Li
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Haisheng Ou
- Guangxi Normal University School of Physical Science and Technology, Guilin, 541004, PR China
| | - Xiaochun Wang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Qiaozhen Wang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Zhanhua Tao
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Shushi Huang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Yuanlin Huang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Guiwen Wang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
| | - Xinli Pan
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, PR China
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Lin M, Ou H, Zhang P, Meng Y, Wang S, Chang J, Shen A, Hu J. Laser tweezers Raman spectroscopy combined with machine learning for diagnosis of Alzheimer's disease. Spectrochim Acta A Mol Biomol Spectrosc 2022; 280:121542. [PMID: 35792482 DOI: 10.1016/j.saa.2022.121542] [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] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 06/12/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Alzheimer's disease (AD) is a common nervous system disease to affect mostly elderly people over the age of 65 years. However, the diagnosis of AD is mainly depend on the imaging examination, clinical assessments and neuropsychological tests, which may get error diagnosis results and are not able to detect early AD. Here, a rapid, non-invasive, and high accuracy diagnostic method for AD especially early AD is provided based on the laser tweezers Raman spectroscopy (LTRS) combined with machine learning algorithms. AD platelets from different 3xTg-AD transgenic rats at different stages of disease are captured to collect high signal-to-noise ratio Raman signals without contact by LTRS, which is then combined with partial least squares discriminant analysis (PLS-DA), support vector machine (SVM) and principal component analysis (PCA)-canonical discriminate function (CDA) for classification. The results show that the normal and diseased platelets at 3-, 6- and 12-month AD are successfully distinguished and the accuracy is 91%, 68% and 97% respectively, which demonstrates the suggested method can provide a precise detection for AD diagnosis at early, middle and advanced stages.
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Affiliation(s)
- Manman Lin
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Haisheng Ou
- School of Physical Sciences and Technology, Guangxi Normal University, Guilin 541004, China
| | - Peng Zhang
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Yanhong Meng
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Shenghao Wang
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Jing Chang
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Aiguo Shen
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Jiming Hu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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Liu S, Li Y, Zhang J, Zhang H, Wang Y, Chuah C, Tang Y, Lam J, Kwok R, Ou H, Ding D, Tang B. A two-in-one Janus NIR-II AIEgen with balanced absorption and emission for image-guided precision surgery. Mater Today Bio 2021; 10:100087. [PMID: 33889836 PMCID: PMC8050777 DOI: 10.1016/j.mtbio.2020.100087] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023] Open
Abstract
Fluorescence imaging in the near-infrared II (NIR-II, 1000-1700 nm) region opens up new avenues for biological systems due to suppressed scattering and low autofluorescence at longer-wavelength photons. Nonetheless, the development of organic NIR-II fluorophores is still limited mainly due to the shortage of efficient molecular design strategy. Herein, we propose an approach of designing Janus NIR-II fluorophores by introducing electronic donors with distinct properties into one molecule. As a proof-of-concept, fluorescent dye 2 TT-m, oC6B with both twisted and planar electronic donors displayed balanced absorption and emission which were absent in its parent compound. The key design strategy for Janus molecule is that it combines the merits of intense absorption from planar architecture and high fluorescence quantum yield from twisted motif. The resulting 2 TT-m, oC6B nanoparticles exhibit a high molar absorptivity of 1.12 ⨯104 M-1 cm-1 at 808 nm and a NIR-II quantum yield of 3.7%, displaying a typical aggregation-induced emission (AIE) attribute. The highly bright and stable 2 TT-m, oC6B nanoparticles assured NIR-II image-guided cancer surgery to resect submillimeter tumor nodules. The present study may inspire further development of molecular design philosophy for highly bright NIR-II fluorophores for biomedical applications.
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Affiliation(s)
- S. Liu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Y. Li
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - J. Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - H. Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Y. Wang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - C. Chuah
- Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University, South Australia, 5042, Australia
| | - Y. Tang
- Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University, South Australia, 5042, Australia
| | - J.W.Y. Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - R.T.K. Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - H. Ou
- Key Laboratory of Bioactive Materials Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - D. Ding
- Key Laboratory of Bioactive Materials Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - B.Z. Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science and State Key Laboratory of Molecular Neuroscience, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Center for Aggregation-Induced Emission SCUT-HKUST Joint Research Institute State Key Laboratory of Luminescent Materials and Devices South China University of Technology, Guangzhou, 510640, China
- AIE Institute, Guangzhou Development District, Huangpu, Guangzhou, 510530, China
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Chen S, Yang H, Wu M, Wei X, Ou H, Yi M, Meng Y, Lin Z, Huang H, Yao M. Relationship between Expression of ERCC1 and Effect of Cisplatin Concurrent Chemoradiation in Stage II-IIIA Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ou H, Yu Q. [Effects of combination therapy with aspirin, prednisone, and Elevit in patients with unexplained recurrent early pregnancy loss]. Zhonghua Yi Xue Za Zhi 2017; 97:3250-3254. [PMID: 29141364 DOI: 10.3760/cma.j.issn.0376-2491.2017.41.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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 effect of triple therapy with aspirin, prednisone and Elevit in patients with unexplained recurrent early pregnancy loss. Methods: From January 1, 2013 to December 31, 2016, a total of 353 women of childbearing age were enrolled in Peking Union Medical College Hospital, including blood, urine and vaginal swabs. One hundred and fifty-five patients were observed normal results of blood test, urine test and vaginal swabs. According to the treatment regimen, 155 patients were divided into two groups, 89 patients (57.42%) treated with (aspirin, prednisone, and Elevit) as experimental group, and the other 66 cases (42.58%) taking folic acid as control group. The fetal bud, fetal heart and neck hyaline layer thickness were examined by ultrasonography at 12 weeks. Visible fetal bud, fetal heart, and nuchal translucency thickness <0.3 cm were used as indicators of successful treatment. t test and χ(2) test were used to analyze and compare the statistical significance of the differences between the two groups of patients, and the Logistic method was used to analyze the data and observe the effect of medication. Results: There were 67 patients successfully treated in the experimental group, the successful rate was 83.75% (67/80), and 33 patients in the control group were successfully treated, the successful rate was 54.10% (33/61). There were significant statistical differences in two groups (P<0.05). Conclusion: The effect of triple therapy with aspirin, prednisone and Elevit in patients with unexplained recurrent early pregnancy loss is significant.
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Affiliation(s)
- H Ou
- Chinese Academy of Medical Sciences & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
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Liang LY, Lao WQ, Meng Z, Zhang LN, Hou LL, Ou H, Liu ZL, He ZW, Luo XY, Fang JP. [Analysis of the influence of iron overload in glucose metabolism in thalassemia major patients]. Zhonghua Er Ke Za Zhi 2017; 55:419-422. [PMID: 28592008 DOI: 10.3760/cma.j.issn.0578-1310.2017.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This study aimed at determining the characteristics of the glucose homeostasis and its relationship with iron overload of the patients with β-thalassemia major (β-TM). Method: From Sun Yat-sen Memorial Hospital between January 2014 and December 2015, a total of 57 transfusion-dependent β-TM patients with 5-18 years old were enrolled in this study and fasting blood glucose(FBG) and insulin level, serum ferritin (SF), serum iron, transferrin, total iron binding capacity, unsaturated iron binding capacity were determined.Insulin resistance index (IRI), insulin sensitivity index and β-cell function index (BFI) were also estimated. Besides, in 36 patients cardiac T2* and liver T2* were estimated. Result: (1) Four patients(7%) with β-TM were diagnosed diabetes mellitus, and 14(24%) had impaired fasting glucose. (2) The incidence of abnormal glucose metabolism was significantly different according to levels of SF and degrees of the cardiac iron overload(χ(2)=9.737, P<0.05; χ(2)=17.027, P<0.05). It rose while the level of SF increased and the degree of cardiac iron overload aggravated. (3) The incidence of abnormal glucose level was not significantly different in cases with different degree of liver iron overload.The severe group of liver iron overload had significantly higher levels of INS, HOMA-βFI, HOMA-ISI, HOMA-βFI than the non-severe group (Z=-2.434, -2.515, F=8.658, all P<0.05), while no differences were found in the level of FBG, HOMA-βFI between two groups. (4) The result of logistic regression analysis indicated that the cardiac T2* was a significant predictor for the incidence of abnormal glucose metabolism in TM patients (P=0.035, OR=1.182%, 95%CI=1.048 to 1.332). Conclusion: The high prevalence of abnormal glucose metabolism in β-TM patients was mainly closely related with the internal iron overload, especially in organs.The cardiac T2* was an independent risk factor for the incidence of abnormal glucose metabolism in TM patients.
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Affiliation(s)
- L Y Liang
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
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Ou H, Sahli M, Gelin JC, Barrière T. Experimental analysis and finite element simulation of the co-sintering of bi-material components. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.08.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Wu Y, Ou H. Novel effects of COX-2-selective inhibitor NS-398 on IL-1β-induced COX-2 and IL-8 expression in human ovarian granulosa cells. J Reprod Immunol 2010. [DOI: 10.1016/j.jri.2010.06.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Lin T, Li R, Long H, Ou H. Three-dimensional transient sealing analysis of the bolted flange connections of reactor pressure vessel. Nuclear Engineering and Design 2006. [DOI: 10.1016/j.nucengdes.2006.03.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Ou H, Haendeler J, Aebly MR, Kelly LA, Cholewa BC, Koike G, Kwitek-Black A, Jacob HJ, Berk BC, Miano JM. Retinoic acid-induced tissue transglutaminase and apoptosis in vascular smooth muscle cells. Circ Res 2000; 87:881-7. [PMID: 11073883 DOI: 10.1161/01.res.87.10.881] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Retinoids exert antiproliferative and prodifferentiating effects in vascular smooth muscle cells (SMCs) and reduce neointimal mass in balloon-injured blood vessels. The mechanisms through which retinoids carry out these effects are unknown but likely involve retinoid receptor-mediated changes in gene expression. Here we report the cloning, chromosomal mapping, and biological activity of the retinoid-response gene rat tissue transglutaminase (tTG). Northern blotting studies showed that tTG is rapidly and dose-dependently induced in a protein synthesis-independent manner after stimulation with the natural retinoid all-trans retinoic acid (atRA). The induction of tTG was selective for atRA and its stereoisomers 9-cis and 13-cis RA, because little or no elevation in mRNA expression was observed with a panel of growth factors. Western blotting and immunofluorescence confocal microscopy showed an accumulation of cytosolic tTG protein after atRA stimulation. Radiolabeled cross-linking studies revealed a corresponding elevation in in vitro tTG activity. The increase in tTG activity was reduced in the presence of 2 distinct inhibitors of tTG (monodansylcadaverine and cystamine). atRA-induced tTG mRNA and protein expression were followed by a significant elevation in SMC apoptosis. Such retinoid-induced programmed cell death could be partially inhibited with each tTG inhibitor and was completely blocked when both inhibitors were used simultaneously. These results establish a role for atRA in the sequential stimulation of tTG and apoptosis in cultured SMCs. atRA-mediated apoptosis in SMCs seems to require the participation of active tTG, suggesting a potential mechanistic link between this retinoid-inducible gene and programmed cell death.
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MESH Headings
- Animals
- Apoptosis
- Blotting, Northern
- Blotting, Western
- Cadaverine/analogs & derivatives
- Cadaverine/pharmacology
- Cells, Cultured
- Chromosome Mapping
- Cloning, Molecular
- Cystamine/pharmacology
- Dose-Response Relationship, Drug
- Enzyme Inhibitors/pharmacology
- GTP-Binding Proteins/antagonists & inhibitors
- GTP-Binding Proteins/genetics
- GTP-Binding Proteins/metabolism
- Growth Substances/metabolism
- Growth Substances/pharmacology
- Male
- Molecular Sequence Data
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Protein Glutamine gamma Glutamyltransferase 2
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Transcription, Genetic/drug effects
- Transglutaminases/antagonists & inhibitors
- Transglutaminases/genetics
- Transglutaminases/metabolism
- Tretinoin/metabolism
- Tretinoin/pharmacology
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Affiliation(s)
- H Ou
- Center for Cardiovascular Research, University of Rochester Medical Center, Rochester, NY, USA
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12
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Wang P, Liu B, Ou H, Tong L, Yang J, Tang C. Nitric oxide synthase/nitric oxide pathway mediates intussusception pathogenesis in rats. Chin Med J (Engl) 1999; 112:1016-9. [PMID: 11721463] [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: 02/22/2023] Open
Abstract
OBJECTIVE To study the role of nitric oxide synthase/nitric oxide pathway in the pathophysiological process of intussusception (IN). METHODS The IN model of rat was induced by lipopolysaccharide (LPS). The content of NOx in plasma and the NOS activity in colic smooth muscle tissues were measured. The content of cGMP was determined by radioimmunoassay. RESULTS LPS (10 mg/kg, i.p.) induced IN in up to 40% of the rats 6 hours after treatment with LPS. The incidence of IN was significantly increased by 58.3% (P < 0.05) and by 66.8% (P < 0.01) in L-arginine (L-Arg)-treated rats (2% in drinking water) and in sodium nitroprusside (NSP)-treated rats (1 mg/kg, i.p.), respectively, but it is significantly decreased by 66.8% (P < 0.01) after administration of M-omega-nitro-L-arginine methyl ester (L-NAME, 15 mg/kg, i.p.), an inhibitor of nitric oxide synthase (NOS) activity. Furthermore, LPS increased total NOS activity, NOx production and cGMP levels in plasma or in colic smooth muscle tissues. These parameters in LPS-IN rats were significantly elevated by 38.8%, 50.7%, and 48.7% respectively (P < 0.01) compared with LPS-non-IN rats. CONCLUSION NOS/NO pathway plays an important role in the process of IN, and inhibition of NO production may serve as a possible approach to prevent IN.
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Affiliation(s)
- P Wang
- Department of Pediatric Surgery and Central Laboratory, First Clinical Hospital, Beijing Medical University, Beijing 100083, China
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Abstract
PURPOSE Laparoscopic colectomy, as many claim, is technically feasible. However, none can definitely attest to its superiority over or even equivalence to traditional open laparotomy. The goal of this study is to assess results of laparoscopic colectomy via a new approach compared with traditional colectomy. METHODS The study involves 12 cases of laparoscopic mini laparotomy with colectomy and another 12 cases of traditional colectomy. Laparoscopic mini laparotomy is performed with the same equipment used in laparoscopic cholecystectomy. Through a small 5-cm to 6-cm incision, the surgeon's left hand inserts into the peritoneal cavity and participates in the laparoscopic mobilization of the bowel along with other laparoscopic instruments. Mesenteric division and bowel anastomosis are performed through the same incision extracorporeally. RESULTS The preliminary result of the study shows that, compared with traditional surgery, laparoscopic mini laparotomy with colectomy offers reduction in the frequency of usage of intramuscular analgesics, better cosmetic results, earlier food intake, and shorter hospital stay. The only disadvantage of laparoscopic mini laparotomy with colectomy is that it takes longer operative time, which may decrease with more experience. CONCLUSION Laparoscopic mini laparotomy with colectomy is an alternative method of laparoscopic colectomy. It seems to offer a similar morbidity and better results compared with colectomy in open laparotomy.
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Affiliation(s)
- H Ou
- Surgical Department, Chino Valley Medical Center, California
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14
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Kok VC, Liu TW, Lin HH, Ou H, Cheng SH, Liu MC, Huang AT. Concomitant renal cell carcinoma and metastatic epithelioid angiosarcoma with microangiopathy. J Formos Med Assoc 1995; 94:48-52. [PMID: 7613233 DOI: pmid/7613233] [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: 02/07/2023] Open
Abstract
Epithelioid angiosarcoma is an extremely rare clinical entity. Recognized only in recent years, epithelioid angiosarcoma mimicks epithelial tumors, both morphologically and immunohistochemically. It is very aggressive, assuming a rapid, metastatic and fatal course. This is a report of a case with an unequivocal diagnosis of epithelioid angiosarcoma and concomitant renal cell carcinoma. Reports of cancer with double origins of this combination, in patients without inherited von Hippel-Lindau disease, are extremely rare in the English literature. A review of the literature encompassing all cases of epithelioid angiosarcoma since 1983 is included.
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Affiliation(s)
- V C Kok
- Department of Medical Oncology, Koo Foundation, Sun Yat-Sen Cancer Center, Taipei, Taiwan, R.O.C
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15
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Ou H. A new dissecting technique of the gallbladder in laparoscopic cholecystectomy. Surg Laparosc Endosc Percutan Tech 1994; 4:51-3. [PMID: 8167865] [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: 01/29/2023]
Abstract
Laparoscopic cholecystectomy is still a challenge to most general surgeons because of the complexity and length of the procedure. We have developed a timesaving technique of dissecting the gallbladder by using a dissection forceps. This new method reduces the operative time by half.
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Affiliation(s)
- H Ou
- Surgical Department, Chino Valley Medical Center, CA
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