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Peng BR, Zheng LG, Chen LY, El-Shazly M, Hwang TL, Su JH, Lee MH, Lai KH, Sung PJ. Nor-24-homoscalaranes, Neutrophilic Inflammatory Mediators from the Marine Sponge Lendenfeldia sp. Pharmaceuticals (Basel) 2023; 16:1258. [PMID: 37765066 PMCID: PMC10537518 DOI: 10.3390/ph16091258] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/28/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
The marine sponge Lendenfeldia sp., collected from the Southern waters of Taiwan, was subjected to chemical composition screening, resulting in the isolation of four new 24-homoscalarane compounds, namely lendenfeldaranes R-U (1-4). The structures and relative stereochemistry of the new metabolites 1-4 were assigned based on NMR studies. The absolute configurations of compounds 1-4 were determined by comparing the calculated and experimental values of specific optical rotation. The antioxidant and anti-inflammatory activities of the isolated compounds were assayed using superoxide anion generation and elastase release assays. These assays are used to determine neutrophilic inflammatory responses of respiratory burst and degranulation. Compounds 2 and 4 inhibited superoxide anion generation by human neutrophils in response to formyl-L-methionyl-L-leucyl-L-phenylalanine/cytochalasin B (fMLP/CB) with IC50: 3.98-4.46 μM. Compounds 2 and 4 inhibited fMLP/CB-induced elastase release, with IC50 values ranging from 4.73 to 5.24 μM. These findings suggested that these new 24-homoscalarane compounds possess unique structures and potential anti-inflammatory activity.
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Affiliation(s)
- Bo-Rong Peng
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.-R.P.); (L.-Y.C.); (M.-H.L.)
| | - Li-Guo Zheng
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan;
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan;
| | - Lo-Yun Chen
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.-R.P.); (L.-Y.C.); (M.-H.L.)
- PhD Program in Clinical Drug Development of Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, Cairo 11566, Egypt;
| | - Tsong-Long Hwang
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333324, Taiwan;
- Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333324, Taiwan
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333323, Taiwan
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333423, Taiwan
| | - Jui-Hsin Su
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan;
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Mei-Hsien Lee
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.-R.P.); (L.-Y.C.); (M.-H.L.)
- PhD Program in Clinical Drug Development of Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan
- Center for Reproductive Medicine and Sciences, Taipei Medical University Hospital, Taipei 110301, Taiwan
| | - Kuei-Hung Lai
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan; (B.-R.P.); (L.-Y.C.); (M.-H.L.)
- PhD Program in Clinical Drug Development of Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei 110301, Taiwan
- Traditional Herbal Medicine Research Center, Taipei Medical University Hospital, Taipei 110301, Taiwan
| | - Ping-Jyun Sung
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan;
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404394, Taiwan
- PhD Program in Pharmaceutical Biotechnology, Fu Jen Catholic University, New Taipei City 242062, Taiwan
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Huynh TH, Wen ZH, Su JH, Yao ZK, Zheng LG, Tsai YC, Tanaka J, Liaw CC, Sung PJ. Briastecholide M, a New Polyoxygenated Briarane from Briareum stechei. Chem Pharm Bull (Tokyo) 2023; 71:183-187. [PMID: 36724981 DOI: 10.1248/cpb.c22-00605] [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: 02/03/2023]
Abstract
A formerly unpublicized briarane diterpenoid, briastecholide M (1), and its established analogue, brianodin B (2), were purified from Briareum stechei, an octocoral collected from Okinawan waters. Using spectroscopic methods, the structure of 1 was established. Functional study showed that 1 can reducing the release of inducible nitric oxide synthase (iNOS) but enhancing cyclooxygenase-2 (COX-2) protein expression.
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Affiliation(s)
- Thanh Hao Huynh
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University.,National Museum of Marine Biology & Aquarium
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University
| | - Jui-Hsin Su
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University.,National Museum of Marine Biology & Aquarium
| | - Zhi-Kang Yao
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University.,Department of Orthopedics, Kaohsiung Veterans General Hospital
| | | | - Yu-Chi Tsai
- School of Chinese Medicine, College of Chinese Medicine, China Medical University
| | - Junichi Tanaka
- Department of Chemistry, Biology and Marine Science, University of the Ryukyus
| | - Chia-Ching Liaw
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Ministry of Health and Welfare
| | - Ping-Jyun Sung
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University.,National Museum of Marine Biology & Aquarium.,Chinese Medicine Research and Development Center, China Medical University Hospital.,Graduate Institute of Natural Products, Kaohsiung Medical University.,Ph.D. Program in Pharmaceutical Biotechnology, Fu Jen Catholic University
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Lin L, Wang AP, Dou JT, Chen Y, Liu FL, Ma H, Zheng LG, Dong SY, Wang YM, Mu Y. [Predictive value of hemoglobin glycation index for chronic kidney disease]. Zhonghua Nei Ke Za Zhi 2022; 61:1310-1317. [PMID: 36456510 DOI: 10.3760/cma.j.cn112138-20220508-00347] [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: 06/17/2023]
Abstract
Objective: To investigate the influence of hemoglobin glycation index (HGI) on the risk of incident chronic kidney disease (CDK) among nondiabetic patients. Methods: Prospective cohort study. At baseline, a total of 7 407 nondiabetic patients without a history of CKD from Pingguoyuan Community of the Shijingshan District in Beijing were included from December 2011 to August 2012, who were then divided into three groups according to the tertiles of their baseline HGI levels. The CKD incidence rate was compared among the different HGI groups at last follow-up. Cox multivariable regression was applied to evaluate whether HGI measures predicted CKD risk. Test for trend across tertiles were examined using ordinal values in separate models. Results: The mean age of the subjects was (56.4±7.5) years, and 4 933 (66.6%) were female. At mean follow-up of 3.23 years, 107 (1.4%) individuals developed CKD. The incidence of CKD was gradually increasing from the low to high HGI groups [1.1% (28/2 473) vs. 1.2% (31/2 564) vs. 2.0% (48/2 370), P=0.016]. In the multivariate Cox regression analysis, after adjustment for potential confounders, the high HGI group had a 68.5% increased risk of CKD compared with the low HGI group (HR=1.685, 95%CI 1.023 to 2.774). CKD risk increased with increasing HGI tertiles (P for trend=0.028). Conclusion: High HGI is associated with an increased risk for CKD in the nondiabetic population, indicating that HGI may help identify individuals at high risk for CKD.
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Affiliation(s)
- L Lin
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - A P Wang
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - J T Dou
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Y Chen
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - F L Liu
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - H Ma
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - L G Zheng
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - S Y Dong
- Physical Examination Center, Peking University Shougang Hospital, Beijing 100144, China
| | - Y M Wang
- Beijing Hypertension League Institute, Beijing 100039, China
| | - Yiming Mu
- Department of Endocrinology, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
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Huang YQ, Chen PJ, Yang SN, Chien SY, Zheng LG, Wen ZH, Kuo LM, Sung PJ. 17,20-Epoxysteroids from octocoral Isis hippuris (Linnaeus, 1758). Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chen YH, Chang YC, Chen YH, Zheng LG, Huang PC, Huynh TH, Peng BR, Chen YY, Wu YJ, Fang LS, Su JH, Hsu CM, Sung PJ. Natural Products from Octocorals of the Genus Dendronephthya (Family Nephtheidae). Molecules 2020; 25:E5957. [PMID: 33339239 PMCID: PMC7767177 DOI: 10.3390/molecules25245957] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 01/02/2023] Open
Abstract
In this review, 170 natural substances, including steroid, diterpenoid, sesquiterpenoid, peptide, prostaglandin, base, chlorolipid, bicyclolactone, amide, piperazine, polyketide, glycerol, benzoic acid, glycyrrhetyl amino acid, hexitol, pentanoic acid, aminoethyl ester, octadecanone, alkaloid, and a 53-kD allergenic component from octocorals belonging to genus Dendronephthya, were listed. Some of these compounds displayed potential bioactivities.
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Affiliation(s)
- Yung-Husan Chen
- Department of Pharmacy, Xiamen Medical College, Xiamen 361023, Fujian, China;
| | - Yu-Chia Chang
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333324, Taiwan;
| | - Yu-Hsin Chen
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
| | - Li-Guo Zheng
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Pin-Chang Huang
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Thanh-Hao Huynh
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan;
| | - Bo-Rong Peng
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, Taipei 115201, Taiwan
| | - You-Ying Chen
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan;
| | - Yu-Jen Wu
- Department of Food Science and Nutrition, Meiho University, Pingtung 912009, Taiwan;
| | - Lee-Shing Fang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan;
- Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaohsiung 833301, Taiwan
- Super Micro Mass Research and Technology Center, Cheng Shiu University, Kaohsiung 833301, Taiwan
| | - Jui-Hsin Su
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944401, Taiwan
| | - Chang-Min Hsu
- Department of Immunology & Rheumatology, Antai Medical Care Corporation Antai Tian-Sheng Memorial Hospital, Pingtung 928004, Taiwan
| | - Ping-Jyun Sung
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan; (Y.-H.C.); (L.-G.Z.); (P.-C.H.); (T.-H.H.); (B.-R.P.); (Y.-Y.C.); (J.-H.S.)
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804201, Taiwan;
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944401, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404394, Taiwan
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
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Sung PJ, Hwang TL, Wu YC, Chen YH, Chin HK, Peng BR, Chen YY, Hu CC, Zheng LG, Huynh TH, Su TP, Zhang YL, Wen ZH. Survey of Briarane-Type Diterpenoids – Part VII. HETEROCYCLES 2020. [DOI: 10.3987/rev-19-925] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Zheng LG, Chang YC, Hu CC, Wen ZH, Wu YC, Sung PJ. Fragilides K and L, New Briaranes from the Gorgonian Coral Junceella fragilis. Molecules 2018; 23:molecules23071510. [PMID: 29932137 PMCID: PMC6100390 DOI: 10.3390/molecules23071510] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 12/22/2022] Open
Abstract
Two new briarane metabolites—fragilides K (1) and L (2)—along with five known analogues—gemmacolide X, praelolide, juncins P and ZI, and gemmacolide V (3–7)—were extracted and purified from Junceella fragilis, a gorgonian coral. Based on data obtained via spectroscopic techniques, the structures of new briaranes 1 and 2 were determined and the cyclohexane rings in 1 and 2 were found to exist in chair and twist boat conformation, respectively. Additionally, anti-inflammatory analysis showed that briaranes 2, 3, and 6 inhibited pro-inflammatory inducible nitric oxide synthase protein expression and briaranes 3 and 7 suppressed the cyclooxygenase-2 level, in LPS-stimulated murine macrophage-like RAW264.7 cells.
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Affiliation(s)
- Li-Guo Zheng
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 94450, Taiwan.
- National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan.
| | - Yu-Chia Chang
- National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan.
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan.
| | - Chiung-Chih Hu
- National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan.
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Research Center for Natural Products and Drug Development, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan.
| | - Ping-Jyun Sung
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 94450, Taiwan.
- National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40447, Taiwan.
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Sung PJ, Wen ZH, Hwang TL, Zheng LG, Chang YC, Chen JJ. (+)-12-epi-Fragilide G, a New Chlorinated Briarane from the Sea Whip Gorgonian Coral Junceella fragilis. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Zheng LG, Yang RB, Wang HP, Song JJ. [Influence of combined ecological floating bed on nitrogen and phosphorus between overlying water and sediment]. Huan Jing Ke Xue 2013; 34:3064-3070. [PMID: 24191549] [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
A new type of combined ecological floating bed was developed on Swan Lake. It was combined with aquatic and hydrophilous plants and ancillary equipments that included floating controllers, water-cycling aerator systems and wave-making systems. Combined ecological floating bed changed the physical and chemical environment of Swan Lake and had an effect on the transportation and transformation of TN, NH4(+) -N and TP between overlying water and sediment during the experiment. The concentration change of TN, NH4(+) -N and TP and the effect of DO, Eh and pH on the nutrient in the overlying water and sediment were investigated. The results indicated that: in overlying water, the removal efficiencies of TN, NH4(+) -N and TP were 61.92%, 63.09% and 80.0%, respectively; the removal efficiencies of TN and NH4(+) -N were 23.79% and 37.04%, respectively; the concentration of TP increased by 43.71% in sediment during the experiment. The combined ecological floating bed influenced environmental factors such as DO, Eh and pH in overlying water in some degree. DO concentration rose from 8.7-8.9 mg x L(-1) to 9.3-10.4 mg x L(-1), and Eh concentration was from 163-178 mV to 191-198 mV. Both of them were higher than those in the contrast area. Phosphorus release was inhibited, and phosphorus adsorption was promoted through improving DO and Eh of the overlying water. The pH volatility was less and maintained between 7.51 and 8.32, and did not promote phosphorus release in sediment. TN, TP and NH4(+) -N in overlying water and TN and NH4(+) -N in sediment were significantly positively correlated with each other and with TP in sediment. The pH had no significant correlation with TN, TP and NH4(+) -N in overlying water and sediment. DO was significantly positively corrected with Eh in overlying water and was significantly negatively corrected with TP in sediment.
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Affiliation(s)
- Li-Guo Zheng
- Institute of Agri-Environmental Protection, Hunan Agricultural University, Changsha 410128, China.
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Zheng LG, Xu DS, Kang CS, Zhang ZY, Li YH, Zhang YP, Liu D, Jia Q. Stereotactic radiosurgery for primary trigeminal neuralgia using the Leksell Gamma unit. Stereotact Funct Neurosurg 2002; 76:29-35. [PMID: 12007276 DOI: 10.1159/000056492] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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
OBJECTIVE Previous papers have reported Gamma Knife radiosurgery to be a safe, effective method for primary trigeminal neuralgia. Since November 1996, we have treated primary trigeminal neuralgia using the Leksell Gamma Knife at the Tianjin Medical University. The present study reports clinical results of Gamma Knife radiosurgery in the treatment of trigeminal neuralgia in 80 cases. METHODS The mean patient age was 67 years (range 32-92), the mean duration of facial pain was 7.6 years (range 1.5-29). The male:female ratio was 31:49. The right side of the face was involved in 45 patients (56.25%) and the left side in 30 cases (37.5%), with bilateral involvement in 5 cases (6.25%). Under local anesthesia, all patients underwent stereotactic MRI to identify the trigeminal nerve. A single isocenter, using a 4-mm collimator, was positioned at the sensory root of the trigeminal nerve entry zone of the pons, 4-6 mm from the brainstem surface, so that no more than the 20% isodose was administered to the brainstem. The maximum dose was between 70 and 90 Gy, with a mean of 75.6 Gy. For bilateral trigeminal neuralgia, two separate matrices were employed, and bilateral Gamma Knife radiosurgery was performed on the same day. RESULTS Follow-up ranged from 12 to 43 months (mean 23.7 months). Neurological evaluation indicated excellent response in 42 cases (52.5%), good response in 25 cases (31.25%), effective response in 8 cases (10%), so the total pain control rate was 93.75%. The latency from Gamma Knife surgery to pain relief ranged from 1 to 120 days (mean 22 days). Among the 75 patients 7 with pain control experienced pain recurrence 5-26 months after being completely free from pain. A second Gamma Knife radiosurgery was performed in 7 recurrent cases and 5 patients with treatment failure. A maximal dose ranging from 70 to 80 Gy was given (mean 74.2 Gy). After a mean follow-up of 18 months (8-33 months), 9 patients achieved excellent results, and 2 had good results. The latency interval to pain relief ranged from 1 to 120 days (mean 15 days). Nine patients developed new facial numbness, while no other complication appeared in the remainder of the patients. CONCLUSIONS Gamma Knife radiosurgery is a safe and effective method in the treatment of trigeminal neuralgia once diagnosis is established.
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Affiliation(s)
- L G Zheng
- Gamma Knife Center, Department of Neurosurgery, Second Hospital of the Tianjin Medical University, People's Republic of China.
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Abstract
OBJECTIVE To study the relationship between dose-volume effect and complication in gamma knife radiosurgery of intracranial meningiomas. METHOD By using an integrated logistic formula to establish mathematical models, the authors analyzed the relationship between treatment volume and logistic probability for 15 Gy, and the relationship between prescribed dose and treatment volume in 3% logistic probability. Furthermore, 37 meningiomas treated by gamma knife radiosurgery were analyzed retrospectively to investigate how the 3% isoeffect curve impacted on complication. RESULT There was a linear relation between treatment volume and logistic probability for 15 Gy. The regression formula was f(x) = 0.0042x + 0.0007. The 3% isoeffect curve indicated that the prescribed dose was inversely proportional to the treatment volume. During 16.3 months follow-up on average, 18 cases below the 3% isodose curve were without complication, but in 19 cases above the 3% isodose curve, 5 cases suffered complications, the difference being statistically significant. CONCLUSION Dose selection in gamma knife radiosurgery is volume dependent. The 3% isodose curve may possibly be the guideline in gamma knife radiosurgery of meningiomas.
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Affiliation(s)
- C S Kang
- Gamma Knife Center, Department of Neurosurgery, Second Hospital of Tianjin Medical University, PRC.
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Abstract
On the basis of experimental study on 17 dogs, this paper reports on the variation of serum creatine kinase (SCK) with time in the early phase of wounding by spherical steel bullets at three different velocities and its relation with the kinetic energy absorbed by the tissue and with the amount of the excised necrotic tissue surrounding the wound tracks. The results showed that the energy absorbed by the tissue and the amount of the excised necrotic tissue surrounding the wound tracks increased with increasing velocity. Within a period of 6 hours after wounding the SCK activity increased correspondingly.
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Affiliation(s)
- L G Zheng
- Institute of Surgery Research, Third Military Medical College, Chongqing, China
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