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Choi YG, Jang B, Park JH, Choi MW, Lee GY, Cho DJ, Kim HY, Lim HK, Lee WJ, Choi EK, Kim YS. Radotinib Decreases Prion Propagation and Prolongs Survival Times in Models of Prion Disease. Int J Mol Sci 2023; 24:12241. [PMID: 37569615 PMCID: PMC10419185 DOI: 10.3390/ijms241512241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/27/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
The conversion of cellular prion protein (PrPC) into pathogenic prion isoforms (PrPSc) and the mutation of PRNP are definite causes of prion diseases. Unfortunately, without exception, prion diseases are untreatable and fatal neurodegenerative disorders; therefore, one area of research focuses on identifying medicines that can delay the progression of these diseases. According to the concept of drug repositioning, we investigated the efficacy of the c-Abl tyrosine kinase inhibitor radotinib, which is a drug that is approved for the treatment of chronic myeloid leukemia, in the treatment of disease progression in prion models, including prion-infected cell models, Tga20 and hamster cerebellar slice culture models, and 263K scrapie-infected hamster models. Radotinib inhibited PrPSc deposition in neuronal ZW13-2 cells that were infected with the 22L or 139A scrapie strains and in cerebellar slice cultures that were infected with the 22L or 263K scrapie strains. Interestingly, hamsters that were intraperitoneally injected with the 263K scrapie strain and intragastrically treated with radotinib (100 mg/kg) exhibited prolonged survival times (159 ± 28.6 days) compared to nontreated hamsters (135 ± 9.9 days) as well as reduced PrPSc deposition and ameliorated pathology. However, intraperitoneal injection of radotinib exerted a smaller effect on the survival rate of the hamsters. Additionally, we found that different concentrations of radotinib (60, 100, and 200 mg/kg) had similar effects on survival time, but this effect was not observed after treatment with a low dose (30 mg/kg) of radotinib. Interestingly, when radotinib was administered 4 or 8 weeks after prion inoculation, the treated hamsters survived longer than the vehicle-treated hamsters. Additionally, a pharmacokinetic assay revealed that radotinib effectively crossed the blood-brain barrier. Based on our findings, we suggest that radotinib is a new candidate anti-prion drug that could possibly be used to treat prion diseases and promote the remission of symptoms.
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Affiliation(s)
- Yeong-Gon Choi
- Ilsong Institute of Life Science, Hallym University, Youngdeungpo-gu, Seoul 07247, Republic of Korea
| | - Byungki Jang
- Ilsong Institute of Life Science, Hallym University, Youngdeungpo-gu, Seoul 07247, Republic of Korea
| | - Jeong-Ho Park
- Ilsong Institute of Life Science, Hallym University, Youngdeungpo-gu, Seoul 07247, Republic of Korea
| | - Min-Woo Choi
- Ilsong Institute of Life Science, Hallym University, Youngdeungpo-gu, Seoul 07247, Republic of Korea
| | - Gong Yeal Lee
- Il Yang Pharm Co., Ltd., 37, Hagal-ro, 136beon-gil, Giheung-gu, Yongin-si 17096, Republic of Korea (H.Y.K.)
| | - Dae Jin Cho
- Il Yang Pharm Co., Ltd., 37, Hagal-ro, 136beon-gil, Giheung-gu, Yongin-si 17096, Republic of Korea (H.Y.K.)
| | - Hong Youp Kim
- Il Yang Pharm Co., Ltd., 37, Hagal-ro, 136beon-gil, Giheung-gu, Yongin-si 17096, Republic of Korea (H.Y.K.)
| | - Hae Kyoung Lim
- Il Yang Pharm Co., Ltd., 37, Hagal-ro, 136beon-gil, Giheung-gu, Yongin-si 17096, Republic of Korea (H.Y.K.)
| | - Won Jae Lee
- Il Yang Pharm Co., Ltd., 37, Hagal-ro, 136beon-gil, Giheung-gu, Yongin-si 17096, Republic of Korea (H.Y.K.)
| | - Eun-Kyoung Choi
- Ilsong Institute of Life Science, Hallym University, Youngdeungpo-gu, Seoul 07247, Republic of Korea
- Department of Biomedical Gerontology, Graduate School of Hallym University, Chuncheon 24252, Republic of Korea
| | - Yong-Sun Kim
- Ilsong Institute of Life Science, Hallym University, Youngdeungpo-gu, Seoul 07247, Republic of Korea
- Department of Microbiology, College of Medicine, Hallym University, Chuncheon 24252, Republic of Korea
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Baek S, Kwon SH, Jeon JY, Lee GY, Ju HS, Yun HJ, Cho DJ, Lee KP, Nam MH. Radotinib attenuates TGFβ -mediated pulmonary fibrosis in vitro and in vivo: exploring the potential of drug repurposing. BMC Pharmacol Toxicol 2022; 23:93. [PMID: 36522756 PMCID: PMC9753032 DOI: 10.1186/s40360-022-00634-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 11/29/2022] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Tyrosine kinase (TK) plays a crucial role in the pathogenesis of idiopathic pulmonary fibrosis. Here, we aimed to investigate whether radotinib (Rb) could inhibit pulmonary fibrosis by inhibiting TK in vitro and in vivo. METHODS The antifibrotic effects of Rb in transforming growth factor-β (TGF-β)1-stimulated A549 cells were determined using real-time polymerase chain reaction, western blotting, and immunocytochemistry assays. Rb inhibition of bleomycin-induced lung fibrosis in Sprague Dawley (SD) rats was determined by histopathological and immunohistochemical analyses. Rb-interfering metabolites were analyzed using LC-MS/MS. RESULTS Rb concentrations of up to 1000 nM did not affect the viability of A549 cells, but Rb (30 nM) significantly reduced expression of TGF-β1 (10 ng/mL)-induced ECM factors, such as Snail, Twist, and F-actin. Rb also regulated TGF-β1-overexpressed signal cascades, such as fibronectin and α-smooth muscle actin. Furthermore, Rb attenuated the phosphorylation of Smad2 and phosphorylation of kinases, such as, extracellular signal-regulated kinase, and protein kinase B. In the inhibitory test against bleomycin (5 mg/kg)-induced lung fibrosis, the Rb (30 mg/kg/daily)-treated group showed a half-pulmonary fibrosis region compared to the positive control group. In addition, Rb significantly reduced collagen type I and fibronectin expression in the bleomycin-induced fibrotic region of SD rats. Further, the identified metabolite pantothenic acid was not altered by Rb. CONCLUSION Taken together, these results indicate that Rb inhibits TGF-β1-induced pulmonary fibrosis both in vitro and in vivo. These findings suggest that Rb may be an effective treatment for pulmonary fibrosis-related disorders and idiopathic pulmonary fibrosis.
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Affiliation(s)
- Suji Baek
- Research and Development Center, UMUST R&D Corporation, 84, Madeul-ro 13-gil, Dobong-gu, 01411, Seoul, Republic of Korea
| | - Seung Hae Kwon
- Seoul Center, Korean Basic Science Institute, 02841, Seoul, Republic of Korea
| | - Joo Yeong Jeon
- Seoul Center, Korean Basic Science Institute, 02841, Seoul, Republic of Korea
| | - Gong Yeal Lee
- Il Yang Pharm Co.,Ltd, 37, Hagal-ro 136 Beon-gil, Giheung-gu, 17096, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Hyun Soo Ju
- Il Yang Pharm Co.,Ltd, 37, Hagal-ro 136 Beon-gil, Giheung-gu, 17096, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Hyo Jung Yun
- Il Yang Pharm Co.,Ltd, 37, Hagal-ro 136 Beon-gil, Giheung-gu, 17096, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Dae Jin Cho
- Il Yang Pharm Co.,Ltd, 37, Hagal-ro 136 Beon-gil, Giheung-gu, 17096, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Kang Pa Lee
- Research and Development Center, UMUST R&D Corporation, 84, Madeul-ro 13-gil, Dobong-gu, 01411, Seoul, Republic of Korea.
| | - Myung Hee Nam
- Seoul Center, Korean Basic Science Institute, 02841, Seoul, Republic of Korea.
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Lee GY, Shin GW, Park HY, Yoon HK, Kim TH, Lee A, Heo YJ, Lee YJ, Han JY, Park YM. Sonographic Features of Breast Fibroepithelial Masses: Distinguishing Fibroadenoma from Phyllodes Tumour. Hong Kong Journal of Radiology 2022. [DOI: 10.12809/hkjr2217333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- GY Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - GW Shin
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - HY Park
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - HK Yoon
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - TH Kim
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - A Lee
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - YJ Heo
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - YJ Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - JY Han
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - YM Park
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
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Lee GY, Shin GW, Park HY, Yoon HK, Kim TH, Lee A, Heo YJ, Lee YJ, Han JY, Park YM. Predictive sonographic features for differentiation of breast fibroepithelial
tumors: fibroadenoma versus phyllodes tumor. Hong Kong Journal of Radiology 2021. [DOI: 10.12809/hkjr2117333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- GY Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - GW Shin
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - HY Park
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - HK Yoon
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - TH Kim
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - A Lee
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - YJ Heo
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - YJ Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - JY Han
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - YM Park
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
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Lee S, Kim S, Park YJ, Yun SP, Kwon SH, Kim D, Kim DY, Shin JS, Cho DJ, Lee GY, Ju HS, Yun HJ, Park JH, Kim WR, Jung EA, Lee S, Ko HS. The c-Abl inhibitor, Radotinib HCl, is neuroprotective in a preclinical Parkinson's disease mouse model. Hum Mol Genet 2019; 27:2344-2356. [PMID: 29897434 PMCID: PMC6005030 DOI: 10.1093/hmg/ddy143] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/16/2018] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence suggests that the non-receptor tyrosine kinase c-Abl plays an important role in the progression of Parkinson’s disease (PD) and c-Abl inhibition could be neuroprotective in PD and related α-synucleinopathies. Nilotinib, a c-Abl inhibitor, has shown improved motor and cognitive symptoms in PD patients. However, issues concerning blood–brain barrier (BBB) penetration, lack of selectivity and safety still remain. Radotinib HCl is a selective Bcr-Abl kinase inhibitor that not only effectively access the brain, but also exhibits greater pharmacokinetic properties and safety profiles compared to Nilotinib and other c-Abl inhibitors. Here, we show the neuroprotective efficacy of Radotinib HCl, a brain penetrant c-Abl inhibitor, in a pre-clinical model of PD. Importantly, in vitro studies demonstrate that the treatment of Radotinib HCl protects the α-synuclein preformed fibrils (PFF)-induced neuronal toxicity, reduces the α-synuclein PFF-induced Lewy bodies (LB)/Lewy neurites (LN)-like pathology and inhibits the α-synuclein PFF-induced c-Abl activation in primary cortical neurons. Furthermore, administration of Radotinib HCl inhibits c-Abl activation and prevents dopaminergic neuron loss, neuroinflammation and behavioral deficits following α-synuclein PFF-induced toxicity in vivo. Taken together, our findings indicate that Radotinib HCl has beneficial neuroprotective effects in PD and provides an evidence that selective and brain permeable c-Abl inhibitors can be potential therapeutic agents for the treatment of PD and related α-synucleinopathies.
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Affiliation(s)
- Saebom Lee
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Sangjune Kim
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yong Joo Park
- The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Seung Pil Yun
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130, USA
| | - Seung-Hwan Kwon
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Donghoon Kim
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Dong Yeon Kim
- Central Research Institute, Il-Yang Pharmaceutical Co. Ltd., Yongin-si, Gyeonggi-do, Republic of Korea
| | - Jae Soo Shin
- Central Research Institute, Il-Yang Pharmaceutical Co. Ltd., Yongin-si, Gyeonggi-do, Republic of Korea
| | - Dae Jin Cho
- Central Research Institute, Il-Yang Pharmaceutical Co. Ltd., Yongin-si, Gyeonggi-do, Republic of Korea
| | - Gong Yeal Lee
- Central Research Institute, Il-Yang Pharmaceutical Co. Ltd., Yongin-si, Gyeonggi-do, Republic of Korea
| | - Hyun Soo Ju
- Central Research Institute, Il-Yang Pharmaceutical Co. Ltd., Yongin-si, Gyeonggi-do, Republic of Korea
| | - Hyo Jung Yun
- Central Research Institute, Il-Yang Pharmaceutical Co. Ltd., Yongin-si, Gyeonggi-do, Republic of Korea
| | - Jae Hong Park
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Wonjoong Richard Kim
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Eun Ah Jung
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Seulki Lee
- The Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,The Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Neuraly, Inc., Germantown, MD 20876, USA
| | - Han Seok Ko
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Adrienne Helis Malvin Medical Research Foundation, New Orleans, LA 70130, USA.,Neuraly, Inc., Germantown, MD 20876, USA.,Diana Helis Henry Medical Research Foundation, New Orleans, LA 70130, USA
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Garcia-Martinez V, Lopez Sanchez C, Hamed W, Hamed W, Hsu JH, Ferrer-Lorente R, Alshamrani M, Pizzicannella J, Vindis C, Badi I, Korte L, Voellenkle C, Niculescu LS, Massaro M, Babaeva AR, Da Silva F, Woudstra L, Berezin A, Bae MK, Del Giudice C, Bageghni SA, Krobert K, Levay M, Vignier N, Ranieri A, Magenta A, Orlandi A, Porro B, Jeon ES, Omori Y, Herold J, Barnett GA, Grochot-Przeczek A, Korpisalo P, Deffge C, Margariti A, Rong W, Maring JA, Gambardella J, Mitrofan CG, Karpinska O, Morbidelli L, Wilkinson FL, Berezin A, Kostina AS, De Mey JGR, Kumar A, Lupieri A, Pellet-Many C, Stamatiou R, Gromotowicz A, Dickhout A, Murina M, Roka-Moiia YM, Malinova L, Diaz-Canestro C, Vigliarolo T, Cuzzocrea S, Szantai A, Medic B, Cassambai S, Korda A, Revnic CR, Borile G, Diokmetzidou A, Murfitt L, Budko A, Fiordelisi A, De Wijs-Meijler DPM, Gevaert AB, Noriega De La Colina A, Benes J, Guillermo Solache Berrocal GSB, Gafarov V, Zhebel VM, Prakaschandra R, Stepien EL, Smith LE, Carluccio MA, Timasheva Y, Paci M, Dorofeyeva NA, Chimed CH, Petelina TI, Sorop O, Genis A, Parepa IR, Tscharre M, Krestjyaninov MV, Maia-Rocha C, Borges L, Sasonko ML, Kapel SS, Stam K, Sommariva E, Stojkovic S, O'reilly J, Chiva-Blanch G, Malinova L, Evtushenko A, Skopal J, Sunderland N, Gegenava T, Charnaia MA, Di Lascio N, Tarvainen SJ, Malandraki-Miller S, Uitterdijk A, Benzoni P, Ruivo E, Humphrey EJ, Arokiaraj MC, Franco D, Garcia-Lopez V, Aranega A, Lopez-Sanchez C, Franco D, Garcia-Lopez V, Aranega A, Garcia-Martinez V, Tayel S, Khader H, El-Helbawy N, Tayel S, Alrefai A, El-Barbary H, Wu JR, Dai ZK, Yeh JL, Sanjurjo-Rodriguez C, Richaud-Patin Y, Blanco FJ, Badimon L, Raya A, Cahill PA, Diomede F, Merciaro I, Trubiani O, Nahapetyan H, Swiader A, Faccini J, Boya P, Elbaz M, Zeni F, Burba I, Bertolotti M, Capogrossi MC, Pompilio G, Raucci A, Widmer-Teske R, Dutzmann J, Bauersachs J, Donde K, Daniel JM, Sedding DG, Simionescu N, Sanda GM, Carnuta MG, Stancu CS, Popescu AC, Popescu MR, Vlad A, Dimulescu DR, Sima AV, Scoditti E, Pellegrino M, Calabriso N, Carluccio MA, Storelli C, De Caterina R, Solodenkova KS, Kalinina EV, Usachiova MN, Lappalainen J, Lee-Rueckert MDEC, Kovanen PT, Biesbroek PS, Emmens RWE, Van Rossum AC, Juffermans LJM, Niessen JWM, Krijnen PAJ, Kremzer A, Samura T, Berezina T, Gronenko E, Kim MK, Park HJ, Bae SK, Sorriento D, Ciccarelli M, Vernieri E, Campiglia P, Trimarco B, Iaccarino G, Hemmings KE, Porter KE, Ainscough JF, Drinkhill MJ, Turner NA, Hiis HG, Cosson MV, Levy FO, Wieland T, Macquart C, Chatzifrangkeskou M, Evans A, Bonne G, Muchir A, Kemp E, Avkiran M, Carlomosti F, D'agostino M, Beji S, Zaccagnini G, Maimone B, Di Stefano V, De Santa F, Cordisco S, Antonini A, Ciarapica R, Dellambra E, Martelli F, Avitabile D, Capogrossi MC, Scioli MG, Bielli A, Agostinelli S, Tarquini C, Tarallo V, De Falco S, Zaninoni A, Fiorelli S, Bianchi P, Teruzzi G, Squellerio I, Turnu L, Lualdi A, Tremoli E, Cavalca V, Lee YJ, Ju ES, Choi JO, Lee GY, Lim BK, Manickam MANOJ, Jung SH, Omiya S, Otsu K, Deffge C, Nowak S, Wagner M, Braun-Dullaeus RC, Kostin S, Daniel JM, Francke A, Subramaniam S, Kanse SM, Al-Lamee K, Schofield CJ, Egginton S, Gershlick AH, Kloska D, Kopacz A, Augustyniak A, Dulak J, Jozkowicz A, Hytonen J, Halonen P, Taavitsainen J, Tarvainen S, Hiltunen T, Liimatainen T, Kalliokoski K, Knuuti J, Yla-Herttuala S, Wagner M, Weinert S, Isermann B, Lee J, Braun-Dullaeus RC, Herold J, Cochrane A, Kelaini S, Bojdo J, Vila Gonzalez M, Hu Y, Grieve D, Stitt AW, Zeng L, Xu Q, Margariti A, Reglin B, Xiang W, Nitzsche B, Maibier M, Pries AR, Vrijsen KR, Chamuleau SAJ, Verhage V, Metz CHG, Lodder K, Van Eeuwijk ECM, Van Dommelen SM, Doevendans PA, Smits AM, Goumans MJ, Sluijter JPG, Sorriento D, Bova M, Loffredo S, Trimarco B, Iaccarino G, Ciccarelli M, Appleby S, Morrell N, Baranowska-Kuczko M, Kloza M, Ambrozewicz E, Kozlowski M, Malinowska B, Kozlowska H, Monti M, Terzuoli E, Ziche M, Mahmoud AM, Jones AM, Wilkinson JA, Romero M, Duarte J, Alexander MY, Kremzer A, Berezina T, Gronenko E, Faggian G, Kostareva AA, Malashicheva AB, Leurgans TM, Nguyen TN, Irmukhamedov A, Riber LP, Mcgeogh R, Comer S, Blanco Fernandez A, Ghigo A, Blaise R, Smirnova NF, Malet N, Vincent P, Limon I, Gayral S, Hirsch E, Laffargue M, Mehta V, Zachary I, Aidonidis I, Kramkowski K, Miltyk W, Kolodziejczyk P, Gradzka A, Szemraj J, Chabielska E, Dijkgraaf I, Bitsch N, Van Hoof S, Verhaegen F, Koenen R, Hackeng TM, Roshchupkin DI, Buravleva KV, Sergienko VI, Zhernossekov DD, Rybachuk VM, Grinenko TV, Furman N, Dolotovskaya P, Shamyunov M, Denisova T, Reiner M, Akhmedov A, Keller S, Miranda M, Briand S, Barile L, Kullak-Ublick G, Luscher T, Camici G, Guida L, Magnone M, Ameri P, Lazzarini E, Fresia C, Bruzzone S, Zocchi E, Di Paola R, Cordaro M, Crupi R, Siracusa R, Campolo M, Bruschetta G, Fusco R, Pugliatti P, Esposito E, Paloczi J, Ruivo E, Gaspar R, Dinnyes A, Kobolak J, Ferdinandy P, Gorbe A, Todorovic Z, Krstic D, Savic Vujovic K, Jovicic D, Basta Jovanovic G, Radojevic Skodric S, Prostran M, Dean S, Mee CJ, Harvey KL, Hussain A, Pena C, Paltineanu B, Voinea S, Revnic F, Ginghina C, Zaglia T, Ceriotti P, Campo A, Carullo P, Armani A, Coppini R, Vida V, Olivotto I, Stellin G, Rizzuto R, De Stefani D, Sandri M, Catalucci D, Mongillo M, Soumaka E, Kloukina I, Tsikitis M, Makridakis M, Varela A, Davos C, Vlachou A, Capetanaki Y, Iqbal MM, Bennett H, Davenport B, Pinali C, Cooper G, Cartwright E, Kitmitto A, Strutynska NA, Mys LA, Sagach VF, Franco A, Sorriento D, Trimarco B, Iaccarino G, Ciccarelli M, Verzijl A, Stam K, Van Duin R, Reiss IKM, Duncker DJ, Merkus D, Shakeri H, Orije M, Leloup AJ, Van Hove CE, Van Craenenbroeck EM, De Meyer GRY, Vrints CJ, Lemmens K, Desjardins-Creapeau L, Wu R, Lamarre-Cliche M, Larochelle P, Bherer L, Girouard H, Melenovsky M, Kvasilova A, Benes J, Ruskova K, Sedmera D, Ana Barral ABV, Martin Fernandez M, Pablo Roman Garcia PRG, Juan Carlos Llosa JCLL, Manuel Naves Diaz MND, Cesar Moris CM, Jorge B Cannata-Andia JBCA, Isabel Rodriguez IR, Voevoda M, Gromova E, Maximov V, Panov D, Gagulin I, Gafarova A, Palahniuk H, Pashkova IP, Zhebel NV, Starzhynska OL, Naidoo DP, Rawojc K, Enguita FJ, Grudzien G, Cordwell SJ, White MY, Massaro M, Scoditti E, Calabriso N, Pellegrino M, Martinelli R, Gatta V, De Caterina R, Nasibullin TR, Erdman VV, Tuktarova IA, Mustafina OE, Hyttinen J, Severi S, Vorobyov GG, Sagach VF, Batmyagmar KH, Lkhagvasuren Z, Gapon LI, Musikhina NA, Avdeeva KS, Dyachkov SM, Heinonen I, Van Kranenburg M, De Beer VJ, Octavia Y, Van Geuns RJ, Van Den Meiracker AH, Van Der Velden J, Merkus D, Duncker DJ, Everson FP, Ogundipe T, Grandjean T, De Boever P, Goswami N, Strijdom H, Suceveanu AI, Suceveanu AP, Mazilu L, Tofoleanu DE, Catrinoiu D, Rohla M, Hauser C, Huber K, Wojta H, Weiss TW, Melnikova MA, Olezov NV, Gimaev RH, Khalaf H, Ruzov VI, Adao R, Mendes-Ferreira P, Santos-Ribeiro D, Rademaker M, Leite-Moreira AF, Bras-Silva C, Alvarenga LAA, Falcao RSP, Dias RR, Lacchini S, Gutierrez PS, Michel JB, Gurfinkel YUI, Atkov OYU, Teichert M, Korn C, Mogler C, Hertel S, Arnold C, Korff T, Augustin HG, Van Duin RWB, De Wijs-Meijler DPM, Verzijl A, Duncker DJ, Merkus D, D'alessandra Y, Farina FM, Casella M, Catto V, Carbucicchio C, Dello Russso A, Stadiotti I, Brambilla S, Chiesa M, Giacca M, Colombo GI, Pompilio G, Tondo C, Ahlin F, Andric T, Tihanyi D, Wojta J, Huber K, O'connell E, Butt A, Murphy L, Pennington S, Ledwidge M, Mcdonald K, Baugh J, Watson C, Suades R, Crespo J, Estruch R, Badimon L, Dyachenko A, Ryabukho V, Evtushenko V, Saushkina YU, Lishmanov YU, Smyshlyaev K, Bykov A, Popov S, Pavlyukova E, Anfinogenova Y, Szigetfu E, Kapornai B, Forizs E, Jenei ZS, Nagy Z, Merkely B, Zima E, Cai A, Dworakowski R, Gibbs T, Piper S, Jegard N, Mcdonagh T, Gegenava M, Dementieva II, Morozov YUA, Barsanti C, Stea F, Lenzarini F, Kusmic C, Faita F, Halonen PJ, Puhakka PH, Hytonen JP, Taavitsainen JM, Yla-Herttuala S, Supit EA, Carr CA, Groenendijk BCW, Gorsse-Bakker C, Panasewicz A, Sneep S, Tempel D, Van Der Giessen WJ, Duncker DJ, Rys J, Daraio C, Dell'era P, Paloczi J, Pigler J, Eder A, Ferdinandy P, Eschenhagen T, Gorbe A, Mazo MM, Amdursky N, Peters NS, Stevens MM, Terracciano CM. Poster session 2Morphogenetic mechanisms290MiR-133 regulates retinoic acid pathway during early cardiac chamber specification291Bmp2 regulates atrial differentiation through miR-130 during early heart looping formationDevelopmental genetics294Association of deletion allele of insertion/deletion polymorphism in alpha 2B adrenoceptor gene and hypertension with or without type 2 diabetes mellitus295Association of G1359A polymorphism of the endocannabinoid type 1 receptor (CNR1) with coronary artery disease (CAD) with type 2 diabetes mellitusCell growth, differentiation and stem cells - Vascular298Gamma-secretase inhibitor prevents proliferation and migration of ductus arteriosus smooth muscle cells: a role of Notch signaling in postnatal closure of ductus arteriosus299Mesenchymal stromal-like cells (MLCs) derived from induced pluripotent stem (iPS) cells: a promising therapeutic option to promote neovascularization300Sonic Hedgehog promotes mesenchymal stem cell differentiation to vascular smooth muscle cells in cardiovacsular disease301Proinflammatory cytokine secretion and epigenetic modification in endothelial cells treated LPS-GinfivalisCell death and apoptosis - Vascular304Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipidsTranscriptional control and RNA species - Vascular307MicroRNA-34a role in vascular calcification308Local delivery of a miR-146a inhibitor utilizing a clinically applicable approach attenuates neointima formation after vascular injury309Long noncoding RNA landscape of hypoxic endothelial cells310Specific circulating microRNAs levels associate with hypertension, hyperglycemia and dysfunctional HDL in acute coronary syndrome patientsCytokines and cellular inflammation - Vascular313Phosphodiesterase5A up-regulation in vascular endothelium under pro-inflammatory conditions: a newly disclosed anti-inflammatory activity for the omega-3polyunsaturated aatty acid docosahexaenoic acid314Cardiovascular risk modifying with extra-low dose anticytokine drugs in rhematoid arthritis315Conversion of human M-CSF macrophages into foam cells reduces their proinflammatory responses to classical M1-polarizing activation316Lymphocytic myocarditis coincides with increased plaque inflammation and plaque hemorrhage in coronary arteries, facilitating myocardial infarction317Serum osteoprotegerin level predictsdeclined numerous of circulating endothelial- derived and mononuclear-derived progenitor cells in patients with metabolic syndromeGrowth factors and neurohormones - Vascular320Effect of gastrin-releasing peptide (GRP) on vascular inflammationSignal transduction - Heart323A new synthetic peptide regulates hypertrophy in vitro through means of the inhibition of nfkb324Inducible fibroblast-specific knockout of p38 alpha map kinase is cardioprotective in a mouse model of isoproterenol-induced cardiac hypertrophy325Regulation of beta-adrenoceptor-evoked inotropic responses by inhibitory G protein, adenylyl cyclase isoforms 5 and 6 and phosphodiesterases326Binding to RGS3 and stimulation of M2 muscarinic acetylcholine receptors modulates the substrate specificity of p190RhoGAP in cardiac myocytes327Cardiac regulation of post-translational modifications, parylation and deacetylation in LMNA dilated cardiomyopathy mouse model328Beta-adrenergic regulation of the b56delta/pp2a holoenzyme in cardiac myocytes through b56delta phosphorylation at serine 573Nitric oxide and reactive oxygen species - Vascular331Oxidative stress-induced miR-200c disrupts the regulatory loop among SIRT1, FOXO1 and eNOS332Antioxidant therapy prevents oxidative stress-induced endothelial dysfunction and Enhances Wound Healing333Morphological and biochemical characterization of red blood cell in coronary artery diseaseCytoskeleton and mechanotransduction - Heart336Novel myosin activator, JSH compounds, increased myocardial contractility without chronotropic effect in ratsExtracellular matrix and fibrosis - Vascular339Ablation of Toll-like receptor 9 causes cardiac rupture after myocardial infarction by attenuating proliferation and differentiation of cardiac fibroblasts340Altered vascular remodeling in the mouse hind limb ischemia model in Factor VII activating protease (FSAP) deficiencyVasculogenesis, angiogenesis and arteriogenesis343Pro-angiogenic effects of proly-hydroxylase inhibitors and their potential for use in a novel strategy of therapeutic angiogenesis for coronary total occlusion344Nrf2 drives angiogenesis in transcription-independent manner: new function of the master regulator of oxidative stress response345Angiogenic gene therapy, despite efficient vascular growth, is not able to improve muscle function in normoxic or chronically ischemic rabbit hindlimbs -role of capillary arterialization and shunting346Effect of PAR-1 inhibition on collateral vessel growth in the murine hind limb model347Quaking is a key regulator of endothelial cell differentiation, neovascularization and angiogenesis348"Emerging angiogenesis" in the chick chorioallantoic membrane (CAM). An in vivo study349Exosomes from cardiomyocyte progenitor cells and mesenchymal stem cells stimulate angiogenesis in vitro and in vivo via EMMPRINEndothelium352Reciprocal regulation of GRK2 and bradykinin receptor stimulation modulate Ca2+ intracellular level in endothelial cells353The roles of bone morphogenetic proteins 9 and 10 in endothelial inflammation and atherosclerosis354The contribution of GPR55 to the L-alpha-lysophosphatidylinositol-induced vasorelaxation in isolated human pulmonary arteries355The endothelial protective ACE inhibitor Zofenoprilat exerts anti-inflammatory activities through H2S production356A new class of glycomimetic drugs to prevent free fatty acid-induced endothelial dysfunction357Endothelial progenitor cells to apoptotic endothelial cell-derived microparticles ration differentiatesas preserved from reduced ejection fractionheart failure358Proosteogenic genes are activated in endothelial cells of patients with thoracic aortic aneurysm359Endothelin ETB receptors mediate relaxing responses to insulin in pericardial resistance arteries from patients with cardiovascular disease (CVD)Smooth muscle and pericytes362CX3CR1 positive myeloid cells regulate vascular smooth muscle tone by inducing calcium oscillations via activation of IP3 receptors363A novel function of PI3Kg on cAMP regulation, role in arterial wall hyperplasia through modulation of smooth muscle cells proliferation364NRP1 and NRP2 play important roles in the development of neointimal hyperplasia in vivo365Azithromycin induces autophagy in aortic smooth muscle cellsCoagulation, thrombosis and platelets368The real time in vivo evaluation of platelet-dependent aldosterone prothrombotic action in mice369Development of a method for in vivo detection of active thrombi in mice370The antiplatelet effects of structural analogs of the taurine chloramine371The influence of heparin anticoagulant drugs on functional state of human platelets372Regulation of platelet aggregation and adenosine diphosphate release by d dimer in acute coronary syndrome (in vitro study)Oxygen sensing, ischaemia and reperfusion375Sirtuin 5 mediates brain injury in a mouse model of cerebral ischemia-reperfusion376Abscisic acid: a new player in cardiomyocyte protection from ischaemia?377Protective effects of ultramicronized palmitoylethanolamide (PEA-um) in myocardial ischaemia and reperfusion injury in vivo378Identification of stem cell-derived cardiomyocytes using cardiac specific markers and additional testing of these cells in simulated ischemia/reperfusion system379Single-dose intravenous metformin treatment could afford significant protection of the injured rat kidney in an experimental model of ischemia-reperfusion380Cardiotoxicity of long acting muscarinic receptor antagonists used for chronic obstructive pulmonary disease381Dependence antioxidant potential on the concentration of amino acids382The impact of ischemia-reperfusion on physiological parameters,apoptosis and ultrastructure of rabbit myocardium with experimental aterosclerosisMitochondria and energetics385MicroRNA-1 dependent regulation of mitochondrial calcium uniporter (MCU) in normal and hypertrophied hearts386Mitochondrial homeostasis and cardioprotection: common targets for desmin and aB-crystallin387Overexpression of mitofusin-2 (Mfn2) and associated mitochondrial dysfunction in the diabetic heart388NO-dependent prevention of permeability transition pore (MPTP) opening by H2S and its regulation of Ca2+ accumulation in rat heart mitochondria389G protein coupled receptor kinase 2 (GRK2) is fundamental in recovering mitochondrial morphology and function after exposure to ionizing radiation (IR)Gender issues392Sex differences in pulmonary vascular control; focus on the nitric oxide pathwayAging395Heart failure with preserved ejection fraction develops when feeding western diet to senescence-accelerated mice396Cardiovascular markers as predictors of cognitive decline in elderly hypertensive patients397Changes in connexin43 in old rats with volume overload chronic heart failureGenetics and epigenetics400Calcium content in the aortic valve is associated with 1G>2G matrix metalloproteinase 1 polymorphism401Neuropeptide receptor gene s (NPSR1) polymorphism and sleep disturbances402Endothelin-1 gene Lys198Asn polymorphism in men with essential hypertension complicated and uncomplicated with chronic heart failure403Association of common polymorphisms of the lipoprotein lipase and pon1 genes with the metabolic syndrome in a sample of community participantsGenomics, proteomics, metabolomics, lipidomics and glycomics405Gene expression quantification using multiplexed color-coded probe pairs to determine RNA content in sporadic cardiac myxoma406Large-scale phosphorylation study of the type 2 diabetic heart subjected to ischemia / reperfusion injury407Transcriptome-based identification of new anti-inflammatory properties of the olive oil hydroxytyrosol in vascular endothelial cell under basal and proinflammatory conditions408Gene polymorphisms combinations and risk of myocardial infarctionComputer modelling, bioinformatics and big data411Comparison of the repolarization reserve in three state-of-the-art models of the human ventricular action potentialMetabolism, diabetes mellitus and obesity414Endothelial monocyte-activating polypeptide-II improves heart function in type -I Diabetes mellitus415Admission glucose level is independent predictor of impaired left ventricular function in patients with acute myocardial infarction: a two dimensional speckle-tracking echocardiography study416Association between biochemical markers of lipid profile and inflammatory reaction and stiffness of the vascular wall in hypertensive patients with abdominal obesity417Multiple common co-morbidities produce left ventricular diastolic dysfunction associated with coronary microvascular dysfunction, oxidative stress and myocardial stiffening418Investigating the cardiovascular effects of antiretroviral drugs in a lean and high fat/sucrose diet rat model of obesity419Statins in the treatment of non-alcoholic steatohepatitis (NASH). Our experience from a 2-year prospective study in Constanta County, Romania420Epicardial adipose tissue as a predictor of cardiovascular outcome in patients with ACS undergoing PCI?Arterial and pulmonary hypertension423Dependence between heart rhythm disorers and ID polymorphism of ACE gene in hypertensive patients424Molecular mechanisms underlying the beneficial effects of Urocortin 2 in pulmonary arterial hypertension425Inhibition of TGf-b axis and action of renin-angiotensin system in human ascending aorta aneurysms426Early signs of microcirculation and macrocirculation abnormalities in prehypertension427Vascular smooth muscle cell-expressed Tie-2 controls vascular tone428Cardiac and vascular remodelling in the development of chronic thrombo-embolic pulmonary hypertension in a novel swine modelBiomarkers431Arrhythmogenic cardiomyopathy: a new, non invasive biomarker432Can circulating microRNAs distinguish type 1 and type 2 myocardial infarction?433Design of a high-throughput multiplex proteomics assay to identify left ventricular diastolic dysfunction in diabetes434Monocyte-derived and P-selectin-carrying microparticles are differently modified by a low fat diet in patients with cardiovascular risk factors who will and who will not develop a cardiovascular event435Red blood cell distribution width assessment by polychromatic interference microscopy of thin films in chronic heart failure436Invasive and noninvasive evaluation of quality of radiofrequency-induced cardiac denervation in patients with atrial fibrillation437The effect of therapeutic hypothermia on the level of brain derived neurotrophic factor (BDNF) in sera following cardiopulmonary resustitation438Novel biomarkers to predict outcome in patients with heart failure and severe aortic stenosis439Biological factors linking depression and anxiety to cardiovascular disease440Troponins and myoglobin dynamic at coronary arteries graftingInvasive, non-invasive and molecular imaging443Diet composition effects on the genetic typing of the mouse ob mutation: a micro-ultrasound characterization of cardiac function, macro and micro circulation and liver steatosis444Characterization of pig coronary and rabbit aortic lesions using IV-OCT quantitative analysis: correlations with histologyGene therapy and cell therapy447Enhancing the survival and angiogenic potential of mouse atrial mesenchymal cells448VCAM-1 expression in experimental myocardial infarction and its relation to bone marrow-derived mononuclear cell retentionTissue engineering451Advanced multi layered scaffold that increases the maturity of stem cell-derived human cardiomyocytes452Response of engineered heart tissue to simulated ischemia/reperfusion in the presence of acute hyperglycemic conditions453Serum albumin hydrogels prevent de-differentiation of neonatal cardiomyocytes454A novel paintbrush technique for transfer of low viscosity ultraviolet light curable cyan methacrylate on saline immersed in-vitro sheep heart. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ahn KT, Choi JO, Lee GY, Park HD, Jeon ES. Usefulness of high-sensitivity troponin I for the monitoring of subclinical acute cellular rejection after cardiac transplantation. Transplant Proc 2015; 47:504-10. [PMID: 25769598 DOI: 10.1016/j.transproceed.2014.10.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 10/15/2014] [Accepted: 10/28/2014] [Indexed: 11/25/2022]
Abstract
BACKGROUND There are conflicting data about the role of cardiac troponin I (cTnI) as determined by means of conventional methods for the prediction of acute rejection after heart transplantation (HT). The purpose of this study was to evaluate whether cTnI as measured by means of the early prototype high-sensitivity assay (hs-cTnI) can predict acute rejection episode after HT compared with grade of rejection in endomyocardial biopsy (EMB). METHODS This was a single-center cross-sectional study evaluating cTnI levels with the use of both hs-cTnI and current less sensitive conventional cTnI (conv-cTnI) assays measured at the time of EMB after HT. We calculated an index ratio of observed cTnI to expected mean cTnI for each individual patient defined as the mean cTnI measurements at EMB 60 days after HT. RESULTS A total of 252 biopsies from 47 patients were included in this study. In the multivariable mixed model analysis in relation to the presence of acute rejection 60 days after HT, hs-cTnI level was significantly related to the presence of rejection (P = .010). The hs-cTnI ratio index was significantly higher at the time of rejection (median, 1.37; interquartile range [IQR], 1.23-2.88) compared with those without rejection (median, 0.90; IQR, 0.51-1.16; P < .001). In receiver operating characteristic curve analysis, an hs-cTnI ratio index of ≥1.17 could predict the acute rejection with a sensitivity of 82.4% and a specificity of 77.1%. CONCLUSIONS An increased hs-cTnI ratio index was significantly related to rejection episodes. Serial monitoring of hs-cTnI and comparing it with the values without rejection might be useful for the detection of acute rejection after HT.
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Affiliation(s)
- K T Ahn
- Division of Cardiology, Cardiac and Vascular Centers, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J-O Choi
- Division of Cardiology, Cardiac and Vascular Centers, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G Y Lee
- Division of Cardiology, Cardiac and Vascular Centers, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H-D Park
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - E-S Jeon
- Division of Cardiology, Cardiac and Vascular Centers, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Ernat JJ, Song DJ, Brugman SC, Shaha SH, Tokish JM, Lee GY. Mental Health Medication Use Correlates with Poor Outcome After Femoroacetabular Impingement Surgery in a Military Population. J Bone Joint Surg Am 2015; 97:1272-7. [PMID: 26246262 DOI: 10.2106/jbjs.o.00043] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Femoroacetabular impingement is a common cause of hip pain in young adults. Several preoperative risk factors for poor outcomes with surgery have been identified; however, to our knowledge, no study has attempted to determine the effect of psychiatric comorbidity on outcomes with femoroacetabular impingement surgery. METHODS A retrospective review was performed on active-duty patients at one institution undergoing surgery for femoroacetabular impingement over five years. Medical records were reviewed for demographic characteristics, radiographic data, and history of mental health medication use. Return-to-duty status was considered the primary outcome measure. Outcome scores obtained included modified Harris hip scores, Single Assessment Numeric Evaluation scores, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores, patient satisfaction, and Veterans RAND-12 scores. Patients taking mental health medication were compared with those who were not with regard to return to duty and validated patient-reported outcome measures. RESULTS Ninety-three patients (mean age, 32.2 years) were available for follow-up at a mean duration of 3.6 years. Of the seventeen patients discharged from service postoperatively, twelve (71%) were taking mental health medications. One-third (twenty-five) of seventy-six patients who returned to duty were taking mental health medication and this difference was significant (p < 0.006). Patients taking mental health medication had significantly poorer modified Harris hip scores (p < 0.02), WOMAC scores (p < 0.0008), and Veterans RAND-12 mental scores (p < 0.001). Antidepressant, antipsychotic, and multiple mental health medication use were all predictive of medical discharge due to hip pain. CONCLUSIONS Psychiatric comorbidities are an important risk factor in active-duty military personnel undergoing surgery for femoroacetabular impingement. Mental health medication use is associated with poorer outcome scores and can significantly lower the possibility of returning to active-duty status.
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Affiliation(s)
- J J Ernat
- Tripler Army Medical Center, 1 Jarrett White Road, Honolulu, HI 96859
| | - D J Song
- Landstuhl Regional Medical Center, Geb. 3765, 66849 Landstuhl, Germany
| | - S C Brugman
- Tripler Army Medical Center, 1 Jarrett White Road, Honolulu, HI 96859
| | - S H Shaha
- Allscripts, 222 Merchandise Mart Plaza, Suite 2024, Chicago, IL 60694
| | - J M Tokish
- Steadman Hawkins Clinic of the Carolinas, Greenville Health System, 200 Patewood Drive, Suite C100, Greenville, SC 29615. E-mail address:
| | - G Y Lee
- Kaiser Permenante Hospital, 680 Iwilei Road, #600, Honolulu, HI 96817
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Lim AY, Lee GY, Jang SY, Gwag HB, Choi SH, Jeon ES, Cha HS, Sung K, Kim YW, Kim SM, Choe YH, Kim DK. Gender differences in clinical and angiographic findings of patients with Takayasu arteritis. Clin Exp Rheumatol 2015; 33:S-132-7. [PMID: 26016764] [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] [Received: 01/26/2015] [Accepted: 05/04/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVES Because Takayasu arteritis (TA) predominantly affects females, few data regarding gender differences have been reported. The aim of the present study is to describe clinical features and angiographic findings of patients with TA according to gender. METHODS According to the 1990 American College of Rheumatology criteria, 294 patients were diagnosed with TA between September 1994 and April 2014 at a single tertiary hospital. We reviewed clinical, laboratory, and radiologic data at the time of diagnosis. RESULTS Among the 294 patients studied, 257 (87.4%) were female (male:female ratio=1:6.9). Female patients had a higher tendency to exhibit blood pressure differences between arms (p=0.595) and a weak pulse at the brachial artery (p=0.063). In male patients, we observed higher serum creatinine levels (p=0.038) and hypertension more frequently (p=0.061) than in females. Females exhibited more common lesions in the thoracic aorta and its branches, while males had more frequent lesions in the abdominal aorta and its branches. An analysis of angiographic classification according to the International TA Conference in Tokyo 1994 classification revealed that male patients had a higher incidence of type IV and females showed a higher incidence of types I, IIa, and IIb. CONCLUSIONS Female patients with TA have more frequent involvement of the thoracic aorta and its branches, whereas involvement of the abdominal aorta and its branches is more common in males. Considering these gender-specific differences, adjustment of diagnostic criteria for TA according to gender may be necessary.
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Affiliation(s)
- A Y Lim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - G Y Lee
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S Y Jang
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H B Gwag
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S H Choi
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - E-S Jeon
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H-S Cha
- Division of Rheumatology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K Sung
- Department of Thoracic and Cardiovascular Surgery, Vascular Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y-W Kim
- Division of Vascular Surgery, Department of Surgery, Vascular Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S M Kim
- Department of Radiology and Center for Imaging Science, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y H Choe
- Department of Radiology and Center for Imaging Science, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D-K Kim
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Kim KH, Lee GY, Jang JC, Kim JE, Kim YY. Evaluation of Anti-SE Bacteriophage as Feed Additives to Prevent Salmonella enteritidis (SE) in Broiler. Asian-Australas J Anim Sci 2014; 26:386-93. [PMID: 25049801 PMCID: PMC4093478 DOI: 10.5713/ajas.2012.12138] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 10/29/2012] [Accepted: 07/31/2012] [Indexed: 11/27/2022]
Abstract
This experiment was conducted to evaluate anti-Salmonella enteritidis (anti-SE) bacteriophage as feed additives to prevent Salmonella enteritidis in broilers. The experimental diets were formulated for 2 phases feeding trial, and 3 different levels (0.05, 0.1 and 0.2%) of anti-SE bacteriophage were supplemented in basal diet. The basal diet was regarded as the control treatment. A total of 320 1-d-old male broilers (Ross 308) were allotted by randomized complete block (RCB) design in 8 replicates with 10 chicks per pen. All birds were raised on rice hull bedding in ambient controlled environment and free access to feed and water. There were no significant differences in body weight gain, feed intake and feed conversion ratio (FCR) at terminal period among treatments (p>0.05). Relative weights of liver, spleen, abdominal fat and tissue muscle of breast obtained from each anti-SE bacteriophage treatment were similar to control, with a slightly higher value in anti-SE bacteriophage 0.2%. In addition, a numerical difference of glutamic-oxaloacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT) and LDL cholesterol level was observed in the 0.2% anti-SE bacteriophage application even though blood profiles were not significantly affected by supplemented levels of anti-SE bacteriophage (p>0.05). In the result of a 14 d record after Salmonella enteritidis challenge of 160 birds from 4 previous treatments, mortality was linearly decreased with increasing anti-SE bacteriophage level (p<0.05), and Salmonella enteritidis concentration in the cecum was decreased with increasing levels of anti-SE bacteriophage (p<0.05). Based on the results of this study, it is considered that supplementation of 0.2% anti-SE bacteriophage may not cause any negative effect on growth, meat production, and it reduces mortality after Salmonella enteritidis challenge. These results imply to a possible use of anti-SE bacteriophage as an alternative feed additive instead of antibiotics in broilers diet.
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Affiliation(s)
- K H Kim
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Korea
| | - G Y Lee
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Korea
| | - J C Jang
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Korea
| | - J E Kim
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Korea
| | - Y Y Kim
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Korea
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Kim SH, Menon H, Jootar S, Saikia T, Kwak JY, Sohn SK, Park JS, Jeong SH, Kim HJ, Kim YK, Oh SJ, Kim H, Zang DY, Chung JS, Shin HJ, Do YR, Kim JA, Kim DY, Choi CW, Park S, Park HL, Lee GY, Cho DJ, Shin JS, Kim DW. Efficacy and safety of radotinib in chronic phase chronic myeloid leukemia patients with resistance or intolerance to BCR-ABL1 tyrosine kinase inhibitors. Haematologica 2014; 99:1191-6. [PMID: 24705186 PMCID: PMC4077080 DOI: 10.3324/haematol.2013.096776] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 03/31/2014] [Indexed: 11/09/2022] Open
Abstract
Radotinib (IY5511HCL), a novel and selective BCR-ABL1 tyrosine kinase inhibitor, has shown pre-clinical and phase I activity and safety in chronic myeloid leukemia. This phase II study investigated the efficacy and safety of radotinib in Philadelphia chromosome-positive chronic phase-chronic myeloid leukemia patients with resistance and/or intolerance to BCR-ABL1 tyrosine kinase inhibitors. Patients received radotinib 400 mg twice daily for 12 cycles based on results from the phase I trial. The primary end point was rate of major cytogenetic response by 12 months. A total of 77 patients were enrolled. Major cytogenetic response was achieved in 50 (65%; cumulative 75%) patients, including 36 (47%) patients with complete cytogenetic response by 12 months. Median time to major cytogenetic response and complete cytogenetic response were 85 days and 256 days, respectively. Major cytogenetic response and complete cytogenetic response rates were similar between imatinib-resistant and imatinib-intolerant patients, but were higher in patients without BCR-ABL1 mutations. Overall and progression-free survival rates at 12 months were 96.1% and 86.3%, respectively. All newly-occurring or worsening grade 3/4 hematologic abnormalities included thrombocytopenia (24.7%) and anemia (5.2%); grade 3/4 drug-related non-hematologic adverse events included fatigue (3.9%), asthenia (3.9%), and nausea (2.6%). The most common biochemistry abnormality was hyperbilirubinemia (grade 3/4 23.4%), and 12 of 18 cases were managed with dose modification. Study findings suggest radotinib is effective and well tolerated in chronic phase-chronic myeloid leukemia patients with resistance and/or intolerance to BCR-ABL1 tyrosine kinase inhibitors and may represent a promising alternative for these patients. (clinicaltrials.gov identifier: 01602952).
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Affiliation(s)
- Sung-Hyun Kim
- Dong-A University Medical Center, Busan, South Korea
| | - Hari Menon
- Tata Memorial Hospital, Parel, Mumbai, India
| | - Saengsuree Jootar
- Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Tapan Saikia
- Prince Aly Khan Hospital, Mazagaon, Mumbai, India
| | - Jae-Yong Kwak
- Chonbuk National University Medical School & Hospital, Jeonju, South Korea
| | - Sang-Kyun Sohn
- Kyungpook National University Hospital, Daegu, South Korea
| | | | | | - Hyeoung Joon Kim
- Chonnam National University, Hwasun Hospital, Hwasun, South Korea
| | - Yeo-Kyeoung Kim
- Chonnam National University, Hwasun Hospital, Hwasun, South Korea
| | - Suk Joong Oh
- Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hawk Kim
- Ulsan University Hospital, Ulsan, South Korea
| | - Dae Young Zang
- Hallym University Sacred Heart Hospital, Anyang, South Korea
| | | | - Ho Jin Shin
- Pusan National University Hospital, Pusan, South Korea
| | - Young Rok Do
- Dongsan Medical Center, Keimyung University, Daegu, South Korea
| | - Jeong-A Kim
- St. Vincent Hospital, The Catholic University of Korea, Suwon, South Korea
| | - Dae-Young Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | | | - Sahee Park
- Cancer Research Institute, The Catholic University of Korea, Seoul, South Korea
| | - Hye Lin Park
- Central Research Institute, IL-YANG Pharm. Co. Ltd., Yongin, South Korea
| | - Gong Yeal Lee
- Central Research Institute, IL-YANG Pharm. Co. Ltd., Yongin, South Korea
| | - Dae Jin Cho
- Central Research Institute, IL-YANG Pharm. Co. Ltd., Yongin, South Korea
| | - Jae Soo Shin
- Central Research Institute, IL-YANG Pharm. Co. Ltd., Yongin, South Korea
| | - Dong-Wook Kim
- Cancer Research Institute, The Catholic University of Korea, Seoul, South Korea Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
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12
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Lee GY, Jeon P, Do YS, Sung K, Kim DI, Kim YW, Kim DK. Comparison of outcomes between endovascular treatment and bypass surgery in Takayasu arteritis. Scand J Rheumatol 2013; 43:153-61. [DOI: 10.3109/03009742.2013.822096] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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13
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Liu J, Lee GY, Lawitts JA, Toner M, Biggers JD. Technical note: Mice produced by intracytoplasmic sperm injection using a modified conventional method. J Anim Sci 2012; 90:3739-42. [PMID: 22665678 DOI: 10.2527/jas.2012-5136] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A piezo-driven pipette that includes a small amount of mercury to enhance efficiency is widely used for mouse intracytoplasmic sperm injection (ICSI). Unfortunately, the use of toxic mercury is not permitted in hospital facilities and alternatives to mercury that enhance performance of the device do not work as well in the mouse. We have eliminated mercury toxicity and obtained acceptable ICSI efficiency using a modified conventional method. With this technique, oocyte survival, fertilization (number of 2-cell) and blastocyst rates were 77/126 (61.1%), 65/77 (84.4%), and 45/65 (69.2%), respectively. Eleven live pups were born from the transfer of thirty-two 2- to 4-cell embryos to 2 surrogate mothers. This conventional method is efficient, simple, and does not need the assistance of piezo-driven devices.
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Affiliation(s)
- J Liu
- Center for Engineering in Medicine and Surgical Services, Massachusetts General Hospital, Harvard Medical School and Shriners Hospital for Children, Boston, MA 02114, USA.
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14
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Abstract
BACKGROUND AND PURPOSE CT is currently the method of choice for guiding biopsy of lesions of the spine. However, in our hospital, fluoroscopy-guided percutaneous biopsy has been preferred for several years because of equipment availability and easy craniocaudal angulation. The aim of this study was to evaluate the efficacy of fluoroscopy-guided percutaneous biopsy in a clinical setting for diagnosing infectious spondylitis. MATERIALS AND METHODS A retrospective study was performed to evaluate 170 fluoroscopy-guided percutaneous biopsies in 140 patients (male/female = 70:70; mean age, 65.1 years; range, 16-89 years) in a clinical setting who were suspected of having infectious spondylitis between July 2003 and March 2010. Diagnosis was based on pathologic confirmation by tissue or culture from biopsy. The percentage of adequate specimens for diagnosis, histopathologic diagnosis for infectious spondylitis, and positive cultures for causative organisms were evaluated by retrospective review of medical records. RESULTS Adequate specimens for diagnosis were obtained in 165 of 170 cases (97.1%). The diagnosis of infectious spondylitis resulted in 134 of 170 cases confirmed through histopathology or clinical outcome (78.8%). In 51 of 134 cases (38.1%), the causative organism was confirmed by specimens from percutaneous bone biopsy. There were no biopsy-related major complications. The most common organism isolated was Mycobacterium tuberculosis (24 cases), followed by Staphylococcus aureus, Streptococcus agalactiae, and Streptococcus viridans. CONCLUSIONS Fluoroscopy-guided percutaneous biopsy is as accurate and effective as CT-guided biopsy for diagnosing infectious spondylitis.
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Affiliation(s)
- B J Kim
- Department of Radiology, Seoul National University Bundang Hospital, Gyeonggi-do, Korea
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Lee JW, Shin HI, Park SY, Lee GY, Kang HS. Therapeutic trial of fluoroscopic interlaminar epidural steroid injection for axial low back pain: effectiveness and outcome predictors. AJNR Am J Neuroradiol 2010; 31:1817-23. [PMID: 20616178 DOI: 10.3174/ajnr.a2180] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE An ESI for managing LBP is one of the most commonly performed interventions. The purpose of this observational study was to assess the effect of a therapeutic trial of a fluoroscopic interlaminar ESI for axial LBP and to analyze the outcome predictors. MATERIALS AND METHODS All patients who received an interlaminar ESI for axial LBP at our facility in 2007 and 2008 were included. Initial short-term follow-up was done at <1 month after ESI. ESI was considered effective if patients had a reduction of >50% in their pain scores. In July 2009, telephone interviews were conducted by using formatted questions including the NASS patient-satisfaction index. The symptom-free interval was computed by the Kaplan-Meier method. Outcome predictors such as age, sex, duration of LBP, and MR imaging findings were statistically analyzed by the Mann-Whitney U and the Fisher exact tests. RESULTS Eighty-one patients (male/female = 16:65; mean age, 49.9 years; range, 17-77 years) were included in the study. The interlaminar ESI was effective in 63 of the 81 patients (77.8%) at initial short-term follow-up. For the 63 patients in whom ESI was effective, the median symptom-free interval was 154 days (95% CI, 96-212 days). Among 68 patients for whom telephone interviews were possible, 44 patients (64.7%) replied positively to the NASS patient satisfaction index (NASS patient-satisfaction index, 1 or 2). There were no significant outcome predictors. CONCLUSIONS The therapeutic trial of a fluoroscopic interlaminar ESI was effective for axial LBP without significant outcome predictors.
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Affiliation(s)
- J W Lee
- Departments of Radiology, Seoul National University Bundang Hospital, Gyeongi-Do, Korea
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Jo Cheong W, Hyun Chun S, Yeal Lee G. Determination of Solvent Basicity Scale, β, of Mixed Solvents for Three Chromatographic Solvent Systems: 2-Propanol/Hexane, Ethyl Acetate/Hexane, and Methanol/Water. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079608005512] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Won Jo Cheong
- a Department of Chemistry , Inha University , Incheon , 402-751 , South Korea
| | - Sung Hyun Chun
- a Department of Chemistry , Inha University , Incheon , 402-751 , South Korea
| | - Gong Yeal Lee
- a Department of Chemistry , Inha University , Incheon , 402-751 , South Korea
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Chae HJ, Choi KH, Chae SW, Kim HM, Shin TK, Lee GY, Jeong GS, Park HR, Choi HI, Kim SB, Yoo SK, Kim HR. Placenta hominis protects osteoporosis in ovariectomized rats. Immunopharmacol Immunotoxicol 2006; 28:165-73. [PMID: 16684675 DOI: 10.1080/08923970600626197] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 10/23/2022]
Abstract
In China, Japan, and Korea, placenta hominis extracts (PHEs) are used clinically for the treatment of osteoporosis. The anti-osteoporotic effect of PHEs was studied. The trabecular bone area and thickness in OVX rats decreased by 50% from those in sham-operated rats; these decreases were completely inhibited by administration of PHEs for 7 weeks. Osteoclast numbers and the osteoblast surface were enhanced in OVX rats, but PHEs had no effect on these phenomena. Serum phosphorus and alkaline phosphatase in OVX rats increased compared to those in sham-operated rats, but the increases were not affected by the administration of PHEs. Thyroxine (T4) level was stimulated in OVX rats. The extracts inhibited the T4 level in the OVX rats. These results strongly suggest that PHEs be effective in preventing the development of bone loss induced by OVX in rats.
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Affiliation(s)
- H J Chae
- Department of Dental Pharmacology and Wonkwang Biomaterial Implant Research Institute, School of Dentistry, Iksan, Chonbuk, South Korea
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18
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Chae HJ, Chin HY, Lee GY, Park HR, Yang SK, Chung HT, Pae HO, Kim HM, Chae SW, Kim HR. Carbon monoxide and nitric oxide protect against tumor necrosis factor-alpha-induced apoptosis in osteoblasts: HO-1 is necessary to mediate the protection. Clin Chim Acta 2005; 365:270-8. [PMID: 16242122 DOI: 10.1016/j.cca.2005.09.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Revised: 08/31/2005] [Accepted: 09/06/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Carbon monoxide (CO) and nitric oxide (NO) each have unique roles for various inflammatory states, including inflammatory bone resorption. Although it is known that NO can induce the expression of the cytoprotective enzyme HO-1, there is no information as to whether the protective effect of CO requires NO production or whether CO must induce the expression of HO-1 to exert its functional effects. METHODS Murine osteoblast cells, MC3T3E1 osteoblasts, were cultured for CO and NO-associated HO-1 experiments and were transfected with pcDNA 3, pcDNA 3-HO-1, control siRNA or HO-1 siRNA using Nucleofector. For cell death measurement, MTT and annexin V assays were used. We performed Western blotting to check the expressions of HO-1 and iNOs and measured the HO-1 enzyme activity. We also measured the amounts of nitrite and nitrate using Griess reagents. RESULTS The increased expression of HO-1 is required for the protective effect of NO and a single treatment of CO can increase the expression of HO-1, and this is also important for the protective effect of CO in MC3T3E1 osteoblasts. CO as well as NO attenuates the TNF-alpha-induced apoptosis in osteoblasts. The anti-apoptotic effect of CO or NO is not mediated by cGMP, and CO has no effect on the release of NO. The inhibition of HO-1 with using the HO-1 inhibitor ZnPP or HO-1 siRNA resulted in a striking increase of apoptosis in the CO/TNF-alpha-treated cells. Furthermore, HO-1 overexpression showed resistance against the TNF-alpha-induced cytotoxicity in the MC3T3E1 osteoblasts. CONCLUSIONS There is a need for HO-1 expression to mediate the protection provided by exogenous CO or NO in osteoblasts.
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Affiliation(s)
- H J Chae
- Department of Pharmacology and Institute of Cardiovascular Research, School of Medicine, Chonbuk National University, Jeonju, South Korea
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19
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Chae HJ, Park JM, Lee GY, Park HR, Chae SW, Jeong GS, Kim HM, Kim SB, Yoo SK, Kim HR. Yuk-Hap-Tang induces apoptosis by intervening mn-SOD in human cervical carcinoma HeLa cells. Am J Chin Med 2005; 32:883-95. [PMID: 15673194 DOI: 10.1142/s0192415x04002491] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Yuk-Hap-Tang (YHT) induces cell death in human cervical carcinoma HeLa cells. Caspase-3, -6 and -9 were markedly activated in HeLa cells treated with YHT. The preferred substrate for caspase-3 cysteine protease, PARP, was cleaved to its 85-kDa cleavage product. YHT increased the amount of the anti-apoptotic protein, Bcl-2, and the pro-apoptotic protein, Bax. Although p53 has been reported to accumulate in cancer cells in response to anticancer agents, the p53 expression level was not changed in HeLa cells treated with YHT. Manganese (Mn)-TBAP, a mitochondria-specific SOD mimetic agent and NAC/GSH (N-acetyl cysteine/ reduced glutathione) reduced the YHT-induced cytotoxicity and decreased the number of the YHT-induced apoptotic cells. Furthermore, YHT reduced the expression of Mn-SOD protein and its activity in HeLa cells. The data demonstrate that YHT induces the apoptosis of human cervical carcinoma HeLa cells by intervening Mn-SOD.
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Affiliation(s)
- H J Chae
- Department of Pharmacology and the Institute of Cardiovascular Research, School of Medicine, Chonbuk National University, Jeonju, Chonbuk 565-701, South Korea
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20
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Yu CM, Kweon JH, Ho PS, Kang SC, Lee GY. Copper-Catalyzed Cross- and Carbonylative Coupling Reactions of Alkynyliodonium Salts with Organoboronic Acids and Organostannanes. Synlett 2005. [DOI: 10.1055/s-2005-918934] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Abstract
Stimulation of gastric parietal cells results in exocytic recruitment of the proton pump (H(+),K(+)-ATPase) from a pool of intracellular membranes (tubulovesicles) to the apical plasma membrane. We have previously reconstituted a step in this process, the homotypic fusion of tubulovesicles, and shown that they also fuse with liposomes in a protein-dependent manner [Duman, J. G., Singh, G., Lee, G. Y., Machen, T. E., and Forte, J. G. (2002) Traffic 3, 203-17]. Further, the lipid composition of the liposomes affects their ability to undergo fusion with tubulovesicles. In the present study, we investigated the lipid requirements for tubulovesicular membrane fusion using a fluorescent probe relaxation assay as well as transfer of protein between tubulovesicles and liposomes of defined composition. Initially, we tested the ability of tubulovesicles to undergo fusion with a panel of synthetic phosphatidylcholine-based liposomes containing a variety of common membrane lipids of various shapes and charges. We found that anionic lipids such as phosphatidylserine, phosphatidic acid, and phosphoinositides were best able to enhance tubulovesicle-liposome fusion and that they did it in a dose-dependent, apparently saturable manner. Next, we altered the lipid compositions of actual tubulovesicles and observed that addition of anionic lipids was able to enhance tubulovesicle-tubulovesicle fusion in vitro; thus, we hypothesized that the charge imparted by the lipids, per se, was responsible for the enhancement of membrane fusion. Accordingly, addition of negative charges to one of two pools of tubulovesicles in a fusion assay using anionic detergents increased membrane fusion; whereas, addition of positively charged cationic detergent decreased membrane fusion and could be used to back-titrate the anionic effects. Surprisingly, when both pools of fusing membranes were loaded with anionic detergents, fusion was markedly increased. The ability of anionic charges to enhance fusion was diminished as the ionic strength of the fusion medium was increased, suggesting that the mechanism of fusion enhancement depends on the surface charge of the membranes. Finally, the fusion reaction was highly dependent on temperature, and anionic charge appears to lower the activation energy of the fusion reaction. Taken together, these data suggest that (1) tubulovesicular fusion is enhanced by an increase in membrane surface negative charge associated with a lower activation energy and (2) neutralization or reversal of the surface charge prevents tubulovesicular fusion.
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Affiliation(s)
- J G Duman
- Department of Molecular and Cell Biology, University of California, Berkeley, California 94720-3200, USA
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22
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Bae M, Cho S, Song J, Lee GY, Kim K, Yang J, Cho K, Kim SY, Byun Y. Metalloprotease-specific poly(ethylene glycol) methyl ether-peptide-doxorubicin conjugate for targeting anticancer drug delivery based on angiogenesis. Drugs Exp Clin Res 2003; 29:15-23. [PMID: 12866360] [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: 03/03/2023]
Abstract
This article proposes a novel cancer-targeting drug-delivery system based on angiogenesis, in which the enzymatic activity of type IV collagenases is used to cleave the inactive drug conjugate, thereby activating drug fragments. In this study, the amount and distribution of metalloprotease (MMP)-2 and MMP-9 secreted from Lewis lung carcinoma (LCC) cells and the formation of blood vessels were evaluated by gelatin zymography, in situ film zymography and immunostaining. LLC cells secreted MMP-2 and MMP-9, thereby distributing large amounts of MMPs around a solid tumor. The newly developed blood vessels were also found in a solid LLC tumor. The anticancer drug conjugate (mPEG-GPLGV-DOX) was synthesized by conjugating doxorubicin with Gly-Pro-Leu-Gly-Val (GPLGV) peptide and poly(ethylene glycol) methyl ether (mPEG). GPLGV pentapeptide was used as a substrate for MMP-2 and MMP-9, where the cleavage of Gly-Val bond by MMP was expected. In addition, mPEG was grafted to peptide-doxorubicin conjugate to increase the circulation time in the body and to reduce the cytotoxicity of the anticancer drug. The mPEG-GPLGV-DOX conjugate formed a micelle structure in aqueous solution, with a critical micelle concentration (CMC) of about 0.25 mg/ml and a diameter of 73.1 +/- 12.7 nm at 1 mg/ml. In an in vivo experiment, mPEG-GPLGV-DOX showed 20% chemotherapeutic activity compared with free doxorubicin. Although a 50 mg/kg dose of mPEG-GPLGV-DOX showed similar therapeutic effects to a 10 mg/kg dose of doxorubicin, the life span of mice in the conjugate group was significantly increased. Therefore, an efficient anticancer drug-delivery system could be created by increasing therapeutic efficiency and decreasing drug-toxicity by optimizing the degradation rate of the peptide link by MMP and circulation time in the body.
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Affiliation(s)
- M Bae
- Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Korea
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Abstract
We present the preliminary results of our experience with Linear Accelerator (LINAC) radiosurgery for unilateral vestibular schwannomas. The treatment outcomes of 42 patients with a minimum follow-up of 12 months are reported. An excellent rate of tumour control was achieved with a relatively low complication rate. The current results compare favourably with other reported studies in the literature.
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Affiliation(s)
- G Y Lee
- Department of Neurosurgery, Royal Adelaide Hospital, Adelaide, S.A., Australia
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Abstract
Spinocerebellar ataxia type 6 (SCA6), episodic ataxia type 2 (EA2) and familial hemiplegic migraine (FHM) have been known as allelic disorders, which are caused by the alteration of the alpha1A voltage-dependent calcium channel subunit. Expansions of the CAG repeat in the CACNA1A gene on the short arm of the chromosome 19 induce SCA6, and point mutations in the same gene are responsible for EA2 and FHM. In recent studies, both SCA6 and EA2 have been concurrently found in families with 26 CAG repeats without previously reported point mutations either in coding sequences or in intron-exon junctions. We describe a Korean family with CAG26 repeats in the CACNA1A gene. Some of the affected family members had progressive ataxia typical of SCA6 whereas others had episodic vertigo responsive to acetazolamide typical of EA2. Our family support that SCA6 and EA2 are allelic disorders with a high phenotypic variability.
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Affiliation(s)
- S H Koh
- Department of Neurology, Institute of Clinical Medicine, University of Hanyang, Seoul, Korea.
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Abstract
Haemorrhagic necrosis of residual pituitary tumour following partial excision has not previously been well described. This is differentiated from post-operative sellar haematoma due to inadequate haemostasis on the basis of absent free clot. The authors report two cases of large macroadenomas with significant supra-sellar extension which were complicated by haemorrhagic necrosis of residual tumour following initial surgery. The literature is reviewed and possible pathophysiogical mechanisms are discussed.
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Affiliation(s)
- G Y Lee
- Department of Neurosurgery, Royal Adelaide Hospital, Adelaide, South Australia, Australia.
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Ellenrieder C, Bartosch B, Lee GY, Murphy M, Sweeney C, Hergersberg M, Carrington M, Jaussi R, Hunt T. The long form of CDK2 arises via alternative splicing and forms an active protein kinase with cyclins A and E. DNA Cell Biol 2001; 20:413-23. [PMID: 11506705 DOI: 10.1089/104454901750361479] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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: 11/12/2022] Open
Abstract
We have reinvestigated the long form of cyclin-dependent kinase (CDK)2 that is expressed in many rodent cells. We show that the mRNA encoding CDK2L arises by alternative splicing and that the encoded protein can bind to, and be activated by, cyclins A and E. The complex of CDK2L with cyclin A has about half the specific activity of the equivalent CDK2-cyclin A complex. Also, CDK2L--cyclin A is inhibited to the same extent and by the same concentrations of p21(CIP1) as CDK2--cyclin A. The nucleotide sequences of intron V in the human and murine CDK2 genes, where the sequences encoding the 48-residue insert in CDK2L are located, show very high conservation in the position of the alternatively spliced exon and its surroundings. Despite this, we were not able to detect significant expression of CDK2L in human cell lines, although a low level is expressed in COS-1 cells from monkeys.
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Affiliation(s)
- C Ellenrieder
- Paul Scherrer Institute, Institute for Medical Radiobiology, 5232 Villigen-PSI, Switzerland
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27
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Affiliation(s)
- G Y Lee
- Department of Neurosurgery, University of Adelaide, Royal Adelaide Hospital, Australia.
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Woo D, Lee GY, Anderson E, Aziz N. Immature ovaries and polycystic kidneys in the congenital polycystic kidney mouse may be due to abnormal sex steroid metabolism. Mol Cell Endocrinol 2001; 176:155-62. [PMID: 11369455 DOI: 10.1016/s0303-7207(00)00398-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/24/2022]
Abstract
Ke 6 is a 17beta-hydroxysteroid dehydrogenase (17betaHSD) that is expressed in the kidneys and gonads. The expression of this gene is markedly reduced in three murine models of recessive polycystic kidney disease, a developmental disorder, where some nephrons within the affected kidneys develop into huge fluid-filled cysts while the non-cystic nephrons atrophies by apoptosis. Here, we show that in the cpk/cpk mouse, which have polycystic kidneys, the female reproductive organs also fail to mature properly and remain arrested at an early stage of development. Direct measurement of 17betaHSD activity showed a severe reduction in estrogen and androgen metabolism within gonadal and non-gonadal tissues of the cpk/cpk mouse. Using immunofluorescent staining we localized the expression of the Ke 6 protein within the female mouse reproductive organs. Our findings suggest that estrogen/androgen metabolism may play an important role in the development of the urogenital systems.
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Affiliation(s)
- D Woo
- Department of Medicine, University of California, Los Angeles, CA 90095, USA
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Chang TS, Lee KS, Lee GY, Jeon SD, So DS, Khil LY, Chung MK, Moon CK. NQ-Y15 inhibits the calcium mobilization by elevation of cyclic AMP in rat platelets. Biol Pharm Bull 2001; 24:480-3. [PMID: 11379764 DOI: 10.1248/bpb.24.480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/22/2022]
Abstract
2-1(4-Cyanophenyl)aminol-3-chloro-1,4-naphthalenedione (NQ-Y15) is a dual action drug which acts as a thromboxane A2 (TXA2) synthase inhibitor and TXA2/PGH2 receptor antagonist. In the present study, we examined the effects of NQ-Y15 on Ca2+ mobilization, which is the common event in various types of platelet activation, in arachidonic acid (AA)-stimulated rat platelets. The elevation of cytosolic Ca2+ concentration ([Ca2+]i) induced by AA was inhibited by NQ-Y15 in a concentration-dependent manner. This inhibition-effect of NQ-Y15 was found to be based on the suppression of the rise in [Ca2+]i by the inhibition of both Ca2+ release from internal stores and Ca2+ influx from the extracellular space. Our successive trial was focused on the role of cyclic AMP (cAMP) in the action of NQ-Y15, because cAMP was reported to be increased by dual action drugs such as picotamide and to inhibit the increase in [Ca2+]i. NQ-Y15 was confirmed to increase cAMP in AA-stimulated rat platelets. These results suggested that NQ-Y15 might inhibit the rise in [Ca2+]i in AA-treated rat platelets by increasing cAMP, which is involved in the inhibition of platelet activation.
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Affiliation(s)
- T S Chang
- College of Pharmacy, Seoul National University, Korea
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Abstract
Ke 6 is a 17beta-hydroxysteroid dehydrogenase that is expressed in several somatic tissues as well as the female reproductive tissues. We previously correlated a dramatic reduction in the expression of the Ke 6 gene with the development of recessive polycystic kidney disease, in three murine models, the cpk, jck and pcy mice. We also determined that in one of the murine models, the cpk mouse, the female reproductive organs fail to mature properly and remain arrested at an early stage of development. In this study, we report the expression of the Ke 6 protein in normal male reproductive tissues by immunofluorescent staining. We determined in the cpk mouse that the testes similar to the immature ovaries, is also under-developed and arrested at an early developmental stage. Direct measurement of 17betaHSD activity showed a conspicuous reduction in sex steroid metabolism in the cpk/cpk testes. Our findings suggest that estrogen/androgen metabolism play an important role in the development of the urogenital system.
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Affiliation(s)
- N Aziz
- Department of Medicine, Nephrology Division, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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An JH, Lee GY, Jung JW, Lee W, Kim YS. Identification of residues essential for a two-step reaction by malonyl-CoA synthetase from Rhizobium trifolii. Biochem J 1999; 344 Pt 1:159-66. [PMID: 10548546 PMCID: PMC1220626] [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: 02/14/2023]
Abstract
Malonyl-CoA synthetase (MCS) catalyses the formation of malonyl-CoA in a two-step reaction consisting of the adenylation of malonate with ATP followed by malonyl transfer from malonyl-AMP to CoA. In order to identify amino acid residues essential for each step of the enzyme, catalysis based on chemical modification and database analysis, Arg-168, Lys-170, and His-206 were selected for site-directed mutagenesis. Glutathione-S-transferase-fused enzyme (GST-MCS) was constructed and mutagenized to make R168G, K170M, R168G/K170M and H206L mutants, respectively. The MCS activity of soluble form GST-MCS was the same as that of wild-type MCS. Circular dichroism spectra for the four mutant enzymes were nearly identical to that for the GST-MCS, indicating that Arg-168, Lys-170 and His-206 are not important for conformation but presumably for substrate binding and/or catalysis. HPLC analysis of products revealed that the intermediate malonyl-AMP is not accumulated during MCS catalysis and that none of the mutant enzymes accumulated it either. Kinetic analysis of the mutants revealed that Lys-170 and His-206 play a critical role for ATP binding and the formation of malonyl-AMP, whereas Arg-168 is critical for formation of malonyl-CoA and specificity for malonyl-AMP. Molecular modelling based on the crystal structures of luciferase and gramicidin S synthetase 1 provided MCS structure which could fully explain all these biochemical data even though the MCS model was generated by comparative modelling.
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Affiliation(s)
- J H An
- Department of Biochemistry, College of Science, Bioproducts Research Centre, Yonsei University, Seoul 120-749, Korea
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Angel RJ, Angel JL, Lee GY, Markides KS. Age at migration and family dependency among older Mexican immigrants: recent evidence from the Mexican American EPESE. Gerontologist 1999; 39:59-65. [PMID: 10028771 DOI: 10.1093/geront/39.1.59] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.7] [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] [Indexed: 11/13/2022] Open
Abstract
This study employs new data on Mexican-origin individuals aged 65 and older in the Southwestern United States to examine the impact of the age at which an individual immigrated to the United States on his or her sources of income and living arrangements. The data reveal that, in general, those who immigrated after the age of 50 are more dependent on their families than the native born or those who immigrated earlier in life. Although our findings must be interpreted cautiously because of small cell sizes, those who immigrated later in life are found to be less likely than the native born or those who immigrated earlier to have private pensions and Social Security income. They are also more likely to be living with their children and to be receiving money from them. We discuss the implications of recent restrictions on the eligibility of even legal immigrants for Supplemental Security Income on intergenerational relations and on the potential burden placed on the older immigrant's family, many of which may be seriously strained in hard economic times.
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Affiliation(s)
- R J Angel
- Department of Sociology, University of Texas at Austin 78712, USA.
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Abstract
INTRODUCTION Pamidronate disodium, a bone resorption inhibitor through osteoclast mediation, has been used to treat chronic hypercalcemia secondary to malignancy and chronic renal failure. We report the use of pamidronate for acute, severe hypercalcemia secondary to iatrogenic vitamin D poisoning. CASE REPORT A 77-year-old female nursing home resident was inadvertently administered 50,000 units of oral vitamin D daily for 6 days. The patient presented with lethargy, abdominal pain, and vomiting. The patient's initial serum calcium concentration was 5.25 mmol/L (21 mg/dL). The patient was initially treated with hydration and furosemide but developed congestive heart failure. Pamidronate was used and calcium concentrations normalized by 24 hours after treatment. CONCLUSION We report a case of the use of pamidronate for significant hypercalcemia secondary to acute vitamin D poisoning. Although evidence of congestive heart failure was evident, dialysis was avoided without significant sequelae. Pamidronate therapy should be considered in patients with hypercalcemia secondary to acute vitamin D poisoning.
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Affiliation(s)
- D C Lee
- Department of Emergency Medicine, North Shore University Hospital, Manhasset, NY 11030, USA.
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Fomitcheva J, Baker ME, Anderson E, Lee GY, Aziz N. Characterization of Ke 6, a new 17beta-hydroxysteroid dehydrogenase, and its expression in gonadal tissues. J Biol Chem 1998; 273:22664-71. [PMID: 9712896 DOI: 10.1074/jbc.273.35.22664] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.1] [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: 11/06/2022] Open
Abstract
The abnormal regulation of the Ke 6 gene has been linked to the development of recessive polycystic kidney disease in the mouse. In this report, we have shown that Ke 6 is a 17beta-hydroxysteroid dehydrogenase and can regulate the concentration of biologically active estrogens and androgens. The Ke 6 enzyme is preferentially an oxidative enzyme and inactivates estradiol, testosterone, and dihydrotestosterone. However, the enzyme has some reductive activity and can synthesize estradiol from estrone. We find that the Ke 6 gene is expressed within the ovaries and testes. The presence of Ke 6 protein within the cumulus cells surrounding the oocyte places it in a strategic location to control the level of steroids to which the egg is exposed. Previously, it had been shown that glucocorticoids can induce renal cysts in the neonatal rodent, only when given at a narrow time window of postnatal kidney development. We propose that the reduction in the level of Ke 6 enzyme, which occurs in the cpk, jck, and pcy mice, may lead to abnormal elevations in local level of sex steroids, which either directly or indirectly via abnormal glucocorticoid metabolism result in recessive renal cystic disease, a developmental disorder of the kidney.
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Affiliation(s)
- J Fomitcheva
- Nephrology Division, Department of Medicine, Children's Hospital, Boston, Massachusetts 02115, USA
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Lee GY, Xue M, Kang MS, Kwon OC, Yoon JS, Lee YS, Kim HS, Lee H, Lee IM. Synthesis and characterization of new bis(2-R-indenyl) zirconium dichloride complexes for the olefin polymerization. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(98)00386-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lee GY, Croop JM, Anderson E. Multidrug resistance gene expression correlates with progesterone production in dehydroepiandrosterone-induced polycystic and equine chorionic gonadotropin-stimulated ovaries of prepubertal rats. Biol Reprod 1998; 58:330-7. [PMID: 9475386 DOI: 10.1095/biolreprod58.2.330] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [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] [Indexed: 02/06/2023] Open
Abstract
Polycystic ovaries (PCO) can be induced in prepubertal rats by daily injection of dehydroepiandrosterone (DHEA). There are high levels of progesterone, androgens, and estrogens in the cystic fluid of DHEA-treated rat ovaries. The purpose of this study was to investigate whether high levels of steroids in the PCO correlate with the expression of multidrug resistance gene product P-glycoprotein (Pgp). Using C219, a monoclonal antibody that recognizes the 170-kDa ATP-dependent transmembrane pump, we localized Pgp on the plasma membrane of granulosa cells in cystic follicles but not of oocytes or thecal/interstitial cells. In normal prepubertal rats, Pgp was localized in progesterone-producing granulosa cells of the preovulatory follicles and in cells of the corpora lutea after eCG/hCG stimulation, but not in growing follicles, oocytes, or thecal/interstitial cells. Northern analysis of these tissues indicated strong expression of Pgp mRNA in the preovulatory follicles, cystic follicles, and corpora lutea. From these findings it seems that progesterone produced by the granulosa cells may act in an autocrine manner to induce the expression of Pgp. It may be possible that progesterone interacts with the Pgp of these granulosa cells to modulate steroid efflux.
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Affiliation(s)
- G Y Lee
- Department of Cell Biology, Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
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Lee GY, Zhu J, Yu L, Yu CA. Reconstitution of cytochrome b-560 (QPs1) of bovine heart mitochondrial succinate-ubiquinone reductase. Biochim Biophys Acta 1998; 1363:35-46. [PMID: 9511806 DOI: 10.1016/s0005-2728(97)00089-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The QPs1 subunit of bovine heart mitochondrial succinate-ubiquinone reductase was overexpressed in Escherichia coli DH5 alpha cells as a glutathione S-transferase fusion protein (GST-QPs1) using the expression vector, pGEX/QPs1. The yield of soluble active recombinant GST-QPs1 fusion protein depends on the IPTG concentration, induction growth time, temperature, and medium. Maximum yield of recombinant fusion protein was obtained from cells harvested 3 h postinduction of growth with 0.5 mM IPTG at 27 degrees C in an enriched medium containing betaine and sorbitol. QPs1 is released from the fusion protein by proteolytic cleavage with thrombin. Isolated recombinant QPs1 shows one protein band in SDS-polyacrylamide gel electrophoresis corresponding to subunit III of mitochondrial succinate-ubiquinone reductase. However, partial N-terminal amino acid sequence analysis of recombinant QPs1 shows two extra amino acid residues, glycine and serine, at the N-terminus of mature QPs1, resulting from the recombinant manipulation. When isolated recombinant QPs1 is dispersed in 0.01% dodecyl maltoside, it is in a highly aggregated form with an apparent molecular mass of over 1 million. Recombinant GST-QPs1 contains little cytochrome b-560 heme. However, addition of hemin chloride restores the spectral characteristics of cytochrome b-560. Cytochrome b-560 restoration varies with the amount of hemin used. Maximum reconstitution is obtained when the molar ratio of heme to fusion protein used in the system is 0.6. Reconstituted cytochrome b-560 shows a EPR signal at g = 2.91 which corresponds to one of the EPR signals of cytochrome b-560 in a QPs preparation. When GST-QPs1 with reconstituted cytochrome b-560 is treated with thrombin to cleave GST from QPs1, no change in the absorption and EPR characteristics of cytochrome b-560 is observed, indicating that the bis-histidine ligands of reconstituted cytochrome b-560 are provided by QPs1.
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Affiliation(s)
- G Y Lee
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater 74078, USA
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Yan Z, Lee GY, Anderson E. Influence of dehydroepiandrosterone on the expression of insulin-like growth factor-1 during cystogenesis in polycystic rat ovaries and in cultured rat granulosa cells. Biol Reprod 1997; 57:1509-16. [PMID: 9408262 DOI: 10.1095/biolreprod57.6.1509] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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] [Indexed: 02/05/2023] Open
Abstract
This study was designed to investigate the expression of insulin-like growth factor-1 (IGF-1) during cystogenesis in the dehydroepiandrosterone (DHEA)-induced rat polycystic ovarian syndrome (PCO) model. IGF-1 expression patterns in DHEA-treated rat ovaries were compared with those in control ovaries. In situ hybridization revealed a similar distribution of IGF-1 mRNA in DHEA-treated and control ovaries: in both, IGF-1 mRNA expression was confined to the granulosa cells of preantral and small antral follicles. Some hybridization signals for IGF-1 mRNA were also found in theca and infrequently in the interstitial cells. No signal was observed in larger antral follicles, atretic follicles, or cysts. This similarity indicates that there might be a shared mechanism in the early follicular development of normal folliculogenesis and DHEA-induced cystogenesis. The effects of DHEA on granulosa cells were analyzed in vitro in their quiescent, proliferative, differentiative, and preovulatory stages. Northern analysis revealed three transcripts for IGF-1 (7.5 kilobases [kb], 1.6 kb, and a group of signals between 0.4 and 0.9 kb) in cells at all stages except the preovulatory. The strongest signal was observed in cells of the proliferative stage of control cultures, while expression of IGF-1 increased only in the DHEA-treated cells cultured in the differentiative stage (when they secrete estrogen). Increase in IGF-1 expression may contribute to the hypersteroidogenism observed in the DHEA-treated rat PCO model.
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Affiliation(s)
- Z Yan
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
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39
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Anderson E, Lee GY, O'Brien K. Polycystic ovarian condition in the dehydroepiandrosterone-treated rat model: hyperandrogenism and the resumption of meiosis are major initial events associated with cystogenesis of antral follicles. Anat Rec (Hoboken) 1997; 249:44-53. [PMID: 9294648 DOI: 10.1002/(sici)1097-0185(199709)249:1<44::aid-ar6>3.0.co;2-f] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [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] [Indexed: 02/05/2023]
Abstract
BACKGROUND The purpose of this study was to elucidate the early effects of dehydroepiandrosterone (DHEA) in the polycystic rat model by charting cytological changes in the early antral follicle of the ovary and constructing a serum hormonal profile. Histological examinations of ovaries from DHEA-treated rats for ten consecutive days revealed that the oocyte of antral follicles, ranging from 1.5 mm to 3.4 mm in diameter, had become activated, i.e., had resumed meiosis. Tabulation and statistical analysis revealed a highly significant difference in the percentage of oocyte activation between the ovaries of DHEA-treated and control rats. Granulosa cells associated with those antral follicles included in our statistical analysis showed no evidence of atresia. A few follicles not included in our analysis contained oocytes that had resumed meiosis and whose associated granulosa cells were atretic. The observed resumption of meiosis occurred in the absence of surges of follicle stimulating hormone (FSH) and luteinizing hormone (LH). During meiosis, a period when many oocytes become activated, levels of serum androgens (DHEA, testosterone, and androstenedione) were high, while FSH, LH, and prolactin (PRL) levels did not differ significantly from those in the controls. Follicles that resume meiosis may be members of a group of follicles that produces a signal(s) when the oocyte becomes uncoupled from the granulosa cell. This signal(s) permit(s) a reprogramming of the accompanying granulosa cells of the follicle to engage in certain developmental processes of cystogenesis. Just what cascade of signals is necessary to achieve this selection remains elusive at this time and is the subject of our continuing investigations.
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Affiliation(s)
- E Anderson
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115-6092, USA
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Anderson E, Lee GY. The polycystic ovarian (PCO) condition: apoptosis and epithelialization of the ovarian antral follicles are aspects of cystogenesis in the dehydroepiandrosterone (DHEA)-treated rat model. Tissue Cell 1997; 29:171-89. [PMID: 9149440 DOI: 10.1016/s0040-8166(97)80017-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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] [Indexed: 02/04/2023]
Abstract
This investigation was designed to study apoptosis and epithelialization during cystogenesis of the dehydroepiandrosterone rat model. Using in situ DNA 3'- end-labeling with non-radioactive digoxigenindidesoxy-UTP (dig-ddUTP), apoptosis is initially seen in cumulus granulosa cells and other granulosa cells facing the antrum. During cystogenesis, apoptosis systematically progresses from the cumulus towards the mural granulosa layer. In contrast, granulosa cells of atretic follicles undergo apoptosis in a random manner. The outer layer of mural granulosa cells during cystogenesis escapes apoptosis. Granulosa cells contain vimentin. However, the outer mural granulosa cell layer that lines the cyst acquires keratin. In addition to being associated with each other via gap junctions, the outer layer of granulosa cells acquire tight junctions. With the characterization of the transformation of the outer mural granulosa cells into a characteristic epithelium and the orderly progression of apoptosis, we further the understanding of the multifaceted process of cystogenesis of the ovarian antral follicle.
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Affiliation(s)
- E Anderson
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115-6092, USA
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Thompson WE, Sanbuissho A, Lee GY, Anderson E. Steroidogenic acute regulatory (StAR) protein (p25) and prohibitin (p28) from cultured rat ovarian granulosa cells. J Reprod Fertil 1997; 109:337-48. [PMID: 9155744 DOI: 10.1530/jrf.0.1090337] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This study has identified and characterized two intracellular proteins (25 and 28 kDa) during ongoing differentiation of rat granulosa cells isolated from preantral and early antral follicles. The identity of p25 was confirmed as the mitochondria associated StAR protein by western blotting analysis. In the culture conditions used, this protein was expressed only when granulosa cells were stimulated with FSH to produce progesterone. It is apparent that the steroidogenic differentiation of granulosa cells affects StAR expression. Amino acid sequence analysis of p28 identified it as prohibitin and was corroborated by western blot analysis with antibodies specific for rat prohibitin. During the ongoing differentiation of granulosa cells there were changes in the expression of p28/prohibitin. Although prohibitin is constitutively expressed in granulosa cells, there is an increase in the more acidic isoform of prohibitin when oestrogen concentrations are raised by increased production or exogenous addition. This increase in this acidic isoform of prohibitin is due to phosphorylation. It is possible that oestrogen induces phosphorylation of prohibitin and, thus, may be involved in the regulation of granulosa cell proliferation and the ontogeny of the ovarian follicle.
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Affiliation(s)
- W E Thompson
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
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Anderson E, Lee GY. The effects of dehydroepiandrosterone (DHEA) and its metabolites on the polycystic ovarian condition (PCO): cystogenic changes of rat granulosa cells in vitro. Tissue Cell 1996; 28:673-85. [PMID: 9004535 DOI: 10.1016/s0040-8166(96)80071-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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] [Indexed: 02/03/2023]
Abstract
During mammalian folliculogenesis, granulosa cells (GCs) are initially steroidogenically quiescent, later proliferate, and subsequently commence to hormonally differentiate, first producing estrogen and later, in the preovulatory stage, secreting both estrogen and progesterone. In this study and elsewhere, we have used follicle-stimulating hormone with a combination of growth factors in vitro to simulate the above in vivo conditions. In a previous study, we used dehydroepiandrosterone (DHEA) to accomplish the polycystic ovary condition (PCO) in rats. In the latter model, there were high circulating levels of DHEA and its metabolite, androstenedione. In the present study, we investigated the effects of high levels of DHEA (10(-5) M) and its metabolites, androstenedione, androstenediol and dehydroepiandrosterone sulfate on the quiescent, proliferative, and steroidogenically differentiating stages of GCs cultured in a serum-free medium for up to 10 days. In addition to possessing the regularly occurring organelles, when cultured with the aforementioned androgens, the GCs acquired endoplasmic reticulum of the smooth variety which is associated with steroidogenesis. The radioimmunoassay data showed that GCs cultured in the quiescent and proliferative stages in the presence of the androgens, no longer remain in these stages but proceed to differentiate in a preovulatory direction by producing both estrogen and progesterone. This study supports our hypothesis that high circulating levels of DHEA and/or its metabolites have most effect during the quiescent and proliferative stages of granulosa cells, with regard to their structure and their steroidogenic activities.
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Affiliation(s)
- E Anderson
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115-6092, USA
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Abstract
In hippocampal CA1 area, there are at least two forms of long-term potentiation (LTP): one is N-methyl-D-aspartate (NMDA) receptor-dependent LTP (NMDA LTP), which is induced with a 25 Hz tetanus and blocked by 50 microM 2-amino-5-phosphonovaleric acid (APV); the other is NMDA receptor-independent LTP (VDCC LTP), which is induced by 200 Hz tetanus stimulation in the presence of APV and blocked by nifedipine, a voltage-dependent Ca++ channel (VDCC) blocker, or by the intracellular injection of 1,2-bis(2-Aminophenoxoy)ethane-N,N,N',N'-tetraacetic acid (BAPTA). The effects of anticonvulsant drugs phenobarbital, phenytoin, and valproic acid on both NMDA LTP and VDCC LTP were investigated in rat hippocampal slices. The results showed that 0.1 mg/ml valproic acid significantly altered baseline population spike amplitude by 34.6%, but the other drugs had no significant effect on the baseline population spike amplitude. Phenobarbital (0.025 mg/ml) potently blocked NMDA LTP and inhibited VDCC LTP. Phenytoin (0.02 mg/ml) had no effect on NMDA LTP but reduced VDCC LTP. Valproic acid did not inhibit VDCC LTP, but it abolished the expression of NMDA LTP in a similar manner as H-7, a nonspecific protein kinase C inhibitor. These data suggest that the anti-convulsant effects of these three drugs may be via different cellular mechanisms.
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Affiliation(s)
- G Y Lee
- Department of Neurobiology, Northeastern Ohio Universities College of Medicine, Rootstown 44272-0095, USA.
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Lee GY, Astrin KH, Desnick RJ. Acute intermittent porphyria: a single-base deletion and a nonsense mutation in the human hydroxymethylbilane synthase gene, predicting truncations of the enzyme polypeptide. Am J Med Genet 1995; 58:155-8. [PMID: 8533808 DOI: 10.1002/ajmg.1320580213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Acute intermittent porphyria (AIP) is an autosomal-dominant inborn error of metabolism that results from the half-normal activity of the third enzyme in the heme biosynthetic pathway, hydroxymethylbilane synthase (HMB-synthase). AIP is an ecogenetic condition, since the life-threatening acute attacks are precipitated by various factors, including drugs, alcohol, fasting, and certain hormones. Biochemical diagnosis is problematic, and the identification of mutations in the HMB-synthase gene provides accurate detection of presymptomatic heterozygotes, permitting avoidance of the acute precipitating factors. By direct solid-phase sequencing, two mutations causing AIP were identified, an adenine deletion at position 629 in exon 11(629delA), which alters the reading frame and predicts premature truncation of the enzyme protein after amino acid 255, and a nonsense mutation in exon 12 (R225X). These mutations were confirmed by either restriction enzyme analysis or family studies of symptomatic patients, permitting accurate presymptomatic diagnosis of affected relatives.
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Affiliation(s)
- G Y Lee
- Department of Human Genetics, Mount Sinai School of Medicine, New York, New York 10029, USA
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Abstract
An azidoubiquinone derivative, 3-azido-2-methyl-5-methoxy [3H]-6-decyl-1,4-benzoquinone ([3H]azido-Q), was used to study the ubiquinone-protein interaction and to identify ubiquinone-binding proteins in bovine heart mitochondrial succinate-ubiquinone reductase. When the reductase was incubated with [3H]azido-Q and illuminated with long wavelength UV light, the decrease in the enzymatic activity correlated with the amount of azido-Q incorporated into the protein. When the illuminated, [3H]azido-Q-treated reductase was extracted with organic solvent and subjected to sodium dodecyl sulfate-polyacrylamide gel electrophoresis, radioactivity was found primarily in the QPs1 subunit. The [3H]azido-Q-labeled QPs1 was purified from labeled reductase by a procedure involving ammonium sulfate fractionation, dialysis, organic solvent extraction, lyophilization, preparative sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and cold acetone precipitation. The purified, [3H]azido-Q-labeled QPs1 protein was subjected to reductive carboxymethylation prior to digestion by trypsin. One azido-Q-linked peptide, with a retention time of 66.9 min, was obtained by high performance liquid chromatographic separation. The partial amino-terminal sequence of this peptide is GLTISQL-, indicating that this tryptic peptide comprises amino acid residues 113-140 of the revised amino acid sequence of QPs1. The Q-binding domain, using the proposed structure of QPs1, is probably located in the stretch connecting transmembrane helices 2 and 3 that extrude from the surface of the M side of the inner membrane.
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Affiliation(s)
- G Y Lee
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater 74078
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Sanbuissho A, Lee GY, Anderson E. Functional and ultrastructural characteristics of two types of rat granulosa cell cultured in the presence of FSH or transforming growth factor alpha (TGF-alpha). J Reprod Fertil 1993; 98:367-76. [PMID: 8410800 DOI: 10.1530/jrf.0.0980367] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Granulosa cells were isolated from 15-day-old, 25-day-old or PMSG-primed rats and were separated by Percoll gradient (20 to 60%) into five fractions. The cells in fraction 2 were mostly small cells (6.96-9.57 microns) and fractions 3 and 4 had a relatively high population of large cells (10.96-13.05 microns) which were sorted to collect a pure population of large cells. Aliquots of small or large cells were cultured separately in serum-free defined DMEM/F-12 medium containing 50 ng FSH ml-1, or 10 ng transforming growth factor alpha (TGF-alpha) ml-1 for 3 days. In PMSG-primed rats, the large cells produced 3.2-fold more progesterone than did small cells (with FSH/TGF alpha: 255 +/- 35.0 versus 77.32 +/- 14.5 x 10(-6) ng, day 1). Large and small cells from 25-day-old rats produced similar amounts of progesterone (FSH/TGF alpha: 65.68 +/- 9.6 versus 78.25 +/- 12.3 x 10(-6) ng, day 1). In 15-day-old rats, large and small cells produced very low concentrations of progesterone (FSH/TGF alpha: 4.69 +/- 1.2 versus 2.66 +/- 1.0 x 10(-6) ng, day 1). Large cells from PMSG-primed rats had characteristics of steroidogenic cells, i.e. smooth endoplasmic reticulum and well-developed mitochondria with tubular cristae compared with small cells, whereas small and large cells from 25- and 15-day-old rats contained the regularly occurring organelles without the endoplasmic reticulum of the smooth variety and mitochondria with lamellar cristae. This study shows that the heterogeneity of granulosa cells is related to size, metabolic response to FSH, TGF-alpha or to both factors and morphological features, all of which may be associated with the transition from preantral to preovulatory stages of follicle differentiation.
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Affiliation(s)
- A Sanbuissho
- Department of Anatomy and Cellular Biology, Harvard Medical School, Boston, MA 02115
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Yeh J, Lee GY, Anderson E. Presence of transforming growth factor-alpha messenger ribonucleic acid (mRNA) and absence of epidermal growth factor mRNA in rat ovarian granulosa cells, and the effects of these factors on steroidogenesis in vitro. Biol Reprod 1993; 48:1071-81. [PMID: 8481471 DOI: 10.1095/biolreprod48.5.1071] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [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] [Indexed: 01/31/2023] Open
Abstract
Granulosa cell steroidogenesis has been reported to be modulated by transforming growth factor-alpha (TGF alpha) and its biochemical and physiological analog, epidermal growth factor (EGF). In this report, we studied whether TGF alpha or EGF mRNA is produced by granulosa cells, examined the morphological effects of TGF alpha or EGF on granulosa cell cultures, and measured the changes in granulosa cell progesterone production in cells cultured with TGF alpha or EGF. RNA from fresh granulosa cells and from those incubated overnight and for 4, 7, and 10 days with FSH was studied with reverse transcription-polymerase chain reaction for TGF alpha and for EGF. Only TGF alpha mRNA appeared to be present in the granulosa cells. Phase-contrast microscopy revealed that the combination of FSH plus TGF alpha or EGF resulted in cell shape changes and an increase in lipid droplets in the granulosa cells. Electron microscopy revealed that the endoplasmic reticulum increased in the granulosa cells incubated with either EGF or FSH plus EGF. Mitochondria of granulosa cells incubated with growth factors possessed ultrastructural features consistent with those found in preovulatory granulosa cells. Culture of the granulosa cells with FSH plus TGF alpha or with FSH plus EGF resulted in significantly elevated progesterone and 20 alpha-hydroxyprogesterone levels. The highest level of progesterone production was on the eighth day of culture. We conclude that TGF alpha mRNA is produced by granulosa cells and that granulosa cell differentiation, as defined by morphological and biochemical criteria, is significantly stimulated in vitro by the combination of FSH and TGF alpha.
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Affiliation(s)
- J Yeh
- Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, Massachusetts 02115
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Anderson E, Lee GY. The participation of growth factors in simulating the quiescent, proliferative, and differentiative stages of rat granulosa cells grown in a serum-free medium. Tissue Cell 1993; 25:49-72. [PMID: 8470094 DOI: 10.1016/0040-8166(93)90064-r] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [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] [Indexed: 01/31/2023]
Abstract
Ovarian granulosa cells from small antral follicles from immature rats were cultured in a serum-free medium on an extracellular matrix for 10 days with growth factors in an effort to simulate the metabolic states they experience during their differentiation. During in vivo differentiation granulosa cells are initially quiescent, later proliferate and subsequently commence differentiation. With the production of androstenedione by the vascularized theca interna they produce estrogen and when the follicle reaches the preovulatory stage, granulosa cells produce both estrogen and progesterone. Culturing granulosa cells in serum-free medium plus FSH, PDGF, or FSH plus PDGF, the cells remain quiescent. The cells proliferate most consistently (as assessed by DNA quantitation) when cultured in FSH, PDGF, TGF alpha, TGF beta and GH, and undergo the first level of differentiation by producing estrogen (assessed by RIA) when cultured in FSH, PDGF, TGF beta, IGF-I and delta 4-A. Further differentiation is achieved in the presence of FSH, PDGF, TGF alpha, bFGF and delta 4-A when the cells produce both estrogen and progesterone similar to their production in preovulatory follicles. Phase contrast photomicrographs were made to monitor cellular shape changes. Electron microscopic analysis of the quiescent and proliferative cells reveal them to contain the normally occurring organelles. After 8 days in culture, cells producing estrogen, and estrogen and progesterone, contain endoplasmic reticulum of the smooth variety, an organelle which, in cooperation with mitochondria, is known to be involved in the production of steroids such as estrogen and progesterone. Therefore, with the addition of one or more growth factors and androstenedione to FSH-containing serum free medium, the simulated conditions are partially reminiscent of the follicular microenvironment, in which granulosa cells cultured on extracellular matrix can exhibit characteristics of growth and differentiation similar to folliculogenesis.
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Affiliation(s)
- E Anderson
- Department of Anatomy and Cellular Biology, Harvard Medical School, Boston MA 02115
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Anderson E, Lee MT, Lee GY. Cystogenesis of the ovarian antral follicle of the rat: ultrastructural changes and hormonal profile following the administration of dehydroepiandrosterone. Anat Rec (Hoboken) 1992; 234:359-82. [PMID: 1443664 DOI: 10.1002/ar.1092340307] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.7] [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] [Indexed: 12/27/2022]
Abstract
Immature 27-day-old female Sprague-Dawley rats were administered daily subcutaneous injections of dehydroepiandrosterone (DHEA, 5 mg/100 g BW) to induce the formation of ovarian follicular cysts. Groups of rats were killed on days 0, 10, 15, 20, 25, and 30. Ovaries from each group of rats were processed for light and electron microscopy and for follicular or cystic fluid hormone analysis. Normal antral follicle fluid, PMSG-treated preovulatory follicular fluid, and cystic fluids were analyzed for progesterone (P), estrone (E1), estradiol (E2), testosterone (T), delta 4-androstenedione (delta 4-A), 5 alpha-dihydrotestosterone (DHT), luteinizing hormone (LH), follicle stimulating hormone (FSH), and prolactin (PRL). DHEA induced anovulation, acyclicity, and the formation of follicular cysts. In certain antral follicles, there was a dramatic increase in the quantities of smooth endoplasmic reticulum (SER) in the granulosa cells and many mitochondria had tubular cristae. Further depletion of granulosa cell number was associated with intense blebbing of the cytoplasm into the follicle antrum. Formation of the ovarian follicular cyst was completed when the entire cyst was lined by a single layer of transformed granulosa cells in contact via adhering, gap, and tight junctions. These cells had little cytoplasm, mitochondria with lamellar cristae, vast basal and apical bands of microfilaments, and an extensive array of smooth-surfaced endocytotic invaginations on the basal plasma membrane. These endocytotic pits may subsequently form smooth-surfaced vesicles and thereby serve as one mechanism for moving fluid from the ovarian interstitium into the cyst. Theca interna cells were rarely observed in the peripheral regions of the cyst. Abundant smooth muscle cells were located beneath the basement membrane of the epithelial cells comprising the cyst wall. These acquired morphological and physiological features may ensure persistence of the ovarian cyst and thus potentiate a chronic pathological condition. In this study it was also shown that progesterone, estrone, and estradiol as well as androgen concentration increased in the follicle after PMSG treatment. With DHEA treatment, the follicular cystic fluid concentrations of these steroids progressively increased to extremely high levels concurrent with the development of the follicular cysts.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- E Anderson
- Department of Anatomy and Cellular Biology, Harvard Medical School, Boston, Massachusetts 02115
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Abstract
The presence of immunoreactive atrial natriuretic peptide (irANP) and ANP gene expression in the frog lymph heart was examined by a radioimmunoassay (RIA) combined with HPLC and by Northern blot hybridization of total RNA. Serial dilution curve of the lymph heart extract was paralleled with the RIA standard curve. The lymph heart contained 153.32 +/- 35.80 pg of irANP/mg of wet tissue. The major form of irANP in the frog lymph heart was high molecular weight on reverse-phase and gel permeation high performance liquid chromatography as in the frog atria and ventricles. The frog lymph heart, as well as frog atria and ventricles, was shown to express mRNA coding for ANP. Dense core secretory granules similar to those observed in the mammalian atria were also found in the frog lymph heart. The presence of irANP and the expression of ANP gene in the frog lymph heart suggest that the lymph heart may participate in the regulation of homeostasis of lymph circulation and blood volume change through the synthesis and release of ANP.
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Affiliation(s)
- H Ryu
- Department of Physiology, Medical School, Jeonbug National University, Jeonju, Republic of Korea
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