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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, 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Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Ohnari H, Sekiya M, Naru E, Ogura T, Sakata O, Obata Y. Amino Acids and Their N-Acetylated Derivatives Maintain the Skin's Barrier Function. Chem Pharm Bull (Tokyo) 2021; 69:652-660. [PMID: 34193714 DOI: 10.1248/cpb.c21-00152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The hydrocarbon-chain packing structure of intercellular lipids in the stratum corneum (SC) is critical to the skin's barrier function. We previously found that formation of V-shaped ceramide reduces the barrier function of skin. There are few agents, apart from ceramides and fatty acids that can improve the orthorhombic packing (Orth) ratio of the intercellular lipid packing structure. In this study, we investigated agents that directly increase the Orth ratio. We selected an intercellular lipid model consisting of ceramide, cholesterol, and palmitic acid and performed differential scanning calorimetry. We focused on natural moisturizing factor components in the SC, and therefore investigated amino acids and their derivatives. The results of our intercellular lipid model-based study indicate that N-acetyl-L-hydroxyproline (AHYP), remarkably, maintains the lamellar structure. We verified the effect of AHYP on the lamellar structure and hydrocarbon chain packing structure of intercellular lipids using time-resolved X-ray diffraction measurements of human SC. We also determined the direct physicochemical effects of AHYP on the Orth ratio of the hydrocarbon-chain packing structure. Hence, the results of our human SC study suggest that AHYP preserves skin barrier function by maintaining the hydrocarbon-chain packing structure of intercellular lipids via electrostatic repulsion. These findings will facilitate the development of skincare formulation that can maintain the skin's barrier function.
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Affiliation(s)
| | | | - Eiji Naru
- Research and Development Division, KOSÉ Corporation
| | - Taku Ogura
- Research Institute for Science & Technology, Tokyo University of Science
| | - Osamu Sakata
- Research and Development Division, KOSÉ Corporation
| | - Yasuko Obata
- Department of Pharmaceutical Sciences, Hoshi University
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Quigley A, Sekiya M, Garcia-Campos A, Paz-Silva A, Howell A, Williams DJL, Mulcahy G. Horses are susceptible to natural, but resistant to experimental, infection with the liver fluke, Fasciola hepatica. Vet Parasitol 2020; 281:109094. [PMID: 32344146 DOI: 10.1016/j.vetpar.2020.109094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 10/24/2022]
Abstract
Fasciola hepatica is a common parasite of livestock in Ireland, causing significant economic losses and affecting animal welfare. A previous abattoir study of 200 horses led to an estimated 9.5 % prevalence of infection in horses slaughtered in Ireland. However, the epidemiology and pathogenic significance of this infection in this species is not well-described. The objectives of this study were to determine the susceptibility of horses to oral challenge infection with F. hepatica metacercariae, and to document the course of the infection along with serological and biochemical response. We attempted an experimental infection of horses (n = 10; 9 geldings and 1 mare) with F. hepatica. Four were given 1000 metacercariae, four 500 metacercariae and two were sham-infected. Blood and faecal samples were taken at intervals up to 18 weeks post-infection (wpi). ELISA assays were used to assess sero-conversion in the experimental horses and also in a panel of sera from horses of known fluke status. No flukes were recovered from any of the livers, and neither were any lesions that could be attributed to F. hepatica infection observed. Coproantigen ELISA was negative throughout for all horses. Three antibody detection ELISAs, useful in diagnosing fasciolosis in other species, had limitations as diagnostic aids as determined using a panel of sera from horses of known F. hepatica infection status. This study is limited by the relatively small number of animals included, and the relatively short duration of the study period. Failure to establish infection after oral challenge raises fundamental questions on the pathophysiology and epidemiology of equine fasciolosis.
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Affiliation(s)
- A Quigley
- UCD School of Veterinary Medicine, Dublin, Ireland
| | - M Sekiya
- UCD School of Veterinary Medicine, Dublin, Ireland
| | | | - A Paz-Silva
- Universidad de Santiago de Compostela, Spain
| | - A Howell
- Veterinary Parasitology, Institute of Infection and Global Health, University of Liverpool, UK
| | - D J L Williams
- Veterinary Parasitology, Institute of Infection and Global Health, University of Liverpool, UK
| | - G Mulcahy
- UCD School of Veterinary Medicine, Dublin, Ireland.
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Howell AK, Malalana F, Beesley NJ, Hodgkinson JE, Rhodes H, Sekiya M, Archer D, Clough HE, Gilmore P, Williams DJL. Fasciola hepatica in UK horses. Equine Vet J 2019; 52:194-199. [PMID: 31254486 PMCID: PMC7027485 DOI: 10.1111/evj.13149] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 04/14/2019] [Accepted: 06/15/2019] [Indexed: 11/28/2022]
Abstract
Background Fasciola hepatica (liver fluke) affects grazing animals including horses but the extent to which it affects UK horses is unknown. Objectives To define how liver fluke affects the UK horse population. Study design Descriptive, cross‐sectional, observational study. Methods An F. hepatica excretory‐secretory antibody detection ELISA with a diagnostic sensitivity of 71% and specificity of 97% was validated and used to analyse serum samples. An abattoir study was performed to determine prevalence. A case‐control study of 269 horses compared fluke exposure between horses with liver disease and controls. Data on clinical signs and blood test results were collected for sero‐positive horses. Genotyping of adult fluke was used to produce a multilocus genotype for each parasite. Results Four (2.2%) of 183 horses registered in the UK, sampled in the abattoir, had adult flukes in the liver, and the sero‐prevalence of F. hepatica was estimated as 8.7%. In the case‐control study, horses showing signs consistent with liver disease had significantly higher odds of testing positive for F. hepatica on ELISA than control horses. In 23 sero‐positive horses, a range of non‐specific clinical signs and blood test abnormalities was reported, with a third of the horses showing no signs. Genotypic analysis of liver flukes from horses provided evidence that these came from the same population as flukes from sheep and cattle. Main limitations Bias could have arisen in the prevalence and case‐control studies due to convenience sampling methods, in particular the geographic origin of the horses. Only a small number of horses tested positive so the data on clinical signs are limited. Conclusions Exposure to liver fluke occurs frequently in horses and may be an under‐recognised cause of liver disease. Flukes isolated from horses are from the same population as those found in ruminants. When designing and implementing parasite control plans, fluke should be considered, and horses should be tested if appropriate.
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Affiliation(s)
- A K Howell
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - F Malalana
- Institute of Veterinary Science, University of Liverpool, Liverpool, UK
| | - N J Beesley
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - J E Hodgkinson
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - H Rhodes
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,Institute of Veterinary Science, University of Liverpool, Liverpool, UK
| | - M Sekiya
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - D Archer
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,Institute of Veterinary Science, University of Liverpool, Liverpool, UK
| | - H E Clough
- Institute of Psychology, Health and Society, University of Liverpool, Liverpool, UK
| | - P Gilmore
- Liverpool Veterinary Parasitology Diagnostics, University of Liverpool, Liverpool, UK
| | - D J L Williams
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
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Quigley A, Sekiya M, Egan S, Wolfe A, Negredo C, Mulcahy G. Prevalence of liver fluke infection in Irish horses and assessment of a serological test for diagnosis of equine fasciolosis. Equine Vet J 2016; 49:183-188. [PMID: 27037816 DOI: 10.1111/evj.12577] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 03/27/2016] [Indexed: 12/01/2022]
Abstract
BACKGROUND There is little information on the prevalence of Fasciola hepatica infection in the horse population in Ireland or the potential impact of fluke infection on animal health. OBJECTIVES To investigate F. hepatica infection in the Irish horse population and to assess the diagnostic potential of an indirect enzyme-linked immunosorbent assay (ELISA) based on the F. hepatica recombinant cathepsin L1 (CL1) antigen. STUDY DESIGN Cross-sectional abattoir survey of horses for liver fluke status. METHODS Animals (n = 200) were examined at an abattoir between May 2013 and April 2014. Horses were graded ante mortem for body condition score. Blood and faeces were collected and livers were examined post mortem by gross morphology. A cohort (n = 35) of livers were also examined histologically. Haematology and blood biochemistry, including serum liver enzyme activities, were measured and faeces were sedimented for egg counts. Serum was assayed by indirect ELISA using a recombinant CL1. RESULTS The prevalence of liver fluke infection was 9.5%. There was no correlation between liver fluke status and time of year, breed classification, age group, sex, body condition score, ante mortem assessment, strongyle infection status, serum liver enzyme activities or CL1 concentration. A comparison of the CL1 ELISA in horse sera compared with a reference standard diagnosis showed high specificity of 95.6% (95% confidence interval [CI] 91.5-98.0%), but low sensitivity of 42.1% (95% CI 20.2-66.5%). MAIN LIMITATIONS This study is limited by its nature as an abattoir study, the relatively small number of animals examined (n = 200), and the absence of a known negative group of horses. CONCLUSIONS Blood biomarkers are not good indicators of liver fluke infection and the CL1 ELISA is not a sensitive tool for diagnosis of fluke infection in the horse. The prevalence of F. hepatica in horses indicates that further research is required to assess the potential impact of liver fluke on equine liver health.
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Affiliation(s)
- A Quigley
- School of Veterinary Medicine, University College Dublin, Ireland
| | - M Sekiya
- School of Veterinary Medicine, University College Dublin, Ireland
| | - S Egan
- School of Veterinary Medicine, University College Dublin, Ireland
| | - A Wolfe
- School of Veterinary Medicine, University College Dublin, Ireland
| | - C Negredo
- School of Veterinary Medicine, University College Dublin, Ireland
| | - G Mulcahy
- School of Veterinary Medicine, University College Dublin, Ireland
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Krump L, Hamilton C, Sekiya M, O’Neill R, Mulcahy G. The effect of Fasciola hepatica infection on respiratory vaccine responsiveness in calves. Vet Parasitol 2014; 201:31-9. [DOI: 10.1016/j.vetpar.2014.01.013] [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] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 01/09/2014] [Accepted: 01/19/2014] [Indexed: 10/25/2022]
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Abstract
A reductionist approach to the study of infection does not lend itself to an appraisal of the interactions that occur between 2 or more organisms that infect a host simultaneously. In reality, hosts are subject to multiple simultaneous influences from multiple pathogens along the spectrum from symbiotic microflora to virulent pathogen. In this review, we draw from our own work on Fasciola hepatica and that of others studying helminth co-infection to give examples of how such interactions can influence not only the outcome of infection but also its diagnosis and control. The new tools of systems biology, including both the “omics” approaches and mathematical biology, have significant promise in unraveling the as yet largely unexplored complexities of co-infection.
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Affiliation(s)
- L. Garza-Cuartero
- School of Veterinary Medicine and Conway Institute of Biomedical and Biomolecular Research, University College Dublin, Veterinary Sciences Centre, Belfield, Dublin, Ireland
| | - A. Garcia-Campos
- School of Veterinary Medicine and Conway Institute of Biomedical and Biomolecular Research, University College Dublin, Veterinary Sciences Centre, Belfield, Dublin, Ireland
| | | | - A. Chryssafidis
- School of Veterinary Medicine and Conway Institute of Biomedical and Biomolecular Research, University College Dublin, Veterinary Sciences Centre, Belfield, Dublin, Ireland
| | - J. O’Sullivan
- School of Veterinary Medicine and Conway Institute of Biomedical and Biomolecular Research, University College Dublin, Veterinary Sciences Centre, Belfield, Dublin, Ireland
| | - M. Sekiya
- School of Veterinary Medicine and Conway Institute of Biomedical and Biomolecular Research, University College Dublin, Veterinary Sciences Centre, Belfield, Dublin, Ireland
| | - G. Mulcahy
- School of Veterinary Medicine and Conway Institute of Biomedical and Biomolecular Research, University College Dublin, Veterinary Sciences Centre, Belfield, Dublin, Ireland
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Ikeuchi M, Sekiya M, Urabe Y. Intermittent blockade of a mechanical mitral valve prosthesis. Intern Med 2012; 51:1945-6. [PMID: 22821122 DOI: 10.2169/internalmedicine.51.7851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Masaki Ikeuchi
- Department of Cardiovascular Medicine, Kitakyushu Municipal Medical Center, Japan.
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Buffoni L, Martínez-Moreno FJ, Zafra R, Mendes RE, Pérez-Écija A, Sekiya M, Mulcahy G, Pérez J, Martínez-Moreno A. Humoral immune response in goats immunised with cathepsin L1, peroxiredoxin and Sm14 antigen and experimentally challenged with Fasciola hepatica. Vet Parasitol 2011; 185:315-21. [PMID: 22001704 DOI: 10.1016/j.vetpar.2011.09.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 09/12/2011] [Accepted: 09/20/2011] [Indexed: 10/17/2022]
Abstract
The humoral immune response was analysed in goats immunised with FhCL1, FhPrx, Sm14, and experimentally challenged with Fasciola hepatica. All immunised animals developed significant levels of anti-fluke specific antibodies and those immunised with FhCL1 showed the highest antibody titre. After experimental infection, an increase in the antibody level was detected only in goats immunised with FhCL1. In the adjuvant-control animals, the experimental challenge induced significant production of specific antibodies against FhCL1, FhPrx and Sm14. While liver fluke specific humoral responses were seen in all groups, no significant protection in any of the vaccinated groups was found.
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Affiliation(s)
- L Buffoni
- Animal Health Department (Parasitology and Parasitic Diseases), Faculty of Veterinary Medicine, University of Córdoba, Campus de Rabanales, Ctra. Madrid-Cádiz, km 396, 14014 Córdoba, Spain.
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Ikeuchi M, Kawano S, Ando M, Sekiya M, Kozai T, Urabe Y, Toyoshima S. A case of biopsy-proven cardiac sarcoidosis without any other extracardiac manifestations. J Cardiol Cases 2011; 4:e138-e142. [PMID: 30532880 DOI: 10.1016/j.jccase.2011.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Revised: 07/21/2011] [Accepted: 07/25/2011] [Indexed: 11/16/2022] Open
Abstract
A 49-year-old woman was referred to our hospital for uncontrollable heart failure. She had never been diagnosed as having sarcoidosis. Chest X-ray showed cardiomegaly without bilateral hilar lymphadenopathy. Echocardiography showed diffuse hypokinesis of the left ventricle mimicking idiopathic dilated cardiomyopathy. No specific manifestations implying sarcoidosis were observed. On cardiac catheterization, coronary angiograms were normal, whereas concurrent routine endomyocardial biopsy showed foci of non-caseating granuloma, indicating sarcoidosis. Pathological finding was the only clue to diagnose cardiac sarcoidosis among our standard examinations for heart failure. No other additional investigations found any extracardiac features of sarcoidosis. All serological and immunological examinations were within normal range. This is a challenging case of biopsy-proven cardiac sarcoidosis without any other extracardiac involvement.
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Affiliation(s)
- Masaki Ikeuchi
- Department of Cardiovascular Medicine, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku, Kokurakita-ku, Kitakyushu-shi 802-0077, Japan
| | - Shunichi Kawano
- Department of Internal Medicine, Shin-Kokura Hospital, Kitakyushu, Japan
| | - Makoto Ando
- Department of Cardiovascular Medicine, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku, Kokurakita-ku, Kitakyushu-shi 802-0077, Japan
| | - Masatoshi Sekiya
- Department of Cardiovascular Medicine, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku, Kokurakita-ku, Kitakyushu-shi 802-0077, Japan
| | - Toshiyuki Kozai
- Department of Cardiovascular Medicine, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku, Kokurakita-ku, Kitakyushu-shi 802-0077, Japan
| | - Yoshitoshi Urabe
- Department of Cardiovascular Medicine, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku, Kokurakita-ku, Kitakyushu-shi 802-0077, Japan
| | - Satoshi Toyoshima
- Department of Pathology, Kitakyushu Municipal Medical Center, Kitakyushu, Japan
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Sekiya M. [Role of oxidative stress in the susceptibility to smoke-induced emphysema]. Nihon Kokyuki Gakkai Zasshi 2008; 46:267. [PMID: 18409578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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Abstract
The helminth parasite, Fasciola hepatica, has a worldwide distribution and infects a wide variety of mammalian hosts, including ruminants and man. In response to infection, these hosts mount a type 2 helper (Th2) response that is highly polarized and results in the downregulation of type 1 helper (Th1) mechanisms. In a murine macrophage model F. hepatica induces alternative activation of macrophages. These macrophages differ from classically activated cells in that they preferentially use arginase instead of inducible nitric oxide synthase (iNOS) for metabolism of nitrogen. In this study we sought to characterize macrophage phenotype following stimulation of the ovine cell line MOCL7 with recombinant F. hepatica enzymes and crude parasite extracts. An in vitro model using the MOCL7 cell line was established and arginase levels in cells were used to determine the activation status of cells. Stimulation of this cell-line in vitro with F. hepatica products induces alternative activation. We have also found a chitinase-like protein in supernatants which is capable of differentiating alternatively activated from classically activated macrophages.
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Affiliation(s)
- R J Flynn
- Veterinary Sciences Centre, School of Agriculture, Food Science and Veterinary Medicine, College of Life Science, University College Dublin, Belfield, Dublin 4, Ireland
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Yamawaki T, Yamada A, Fukumoto Y, Kishi T, Sobashima A, Kuwata K, Nakamura R, Sekiya M, Ando H, Okamatsu S. Statin therapy may prevent restenosis after successful coronary intervention, independent of lipid-lowering effect and CRP level. Fukuoka Igaku Zasshi 2007; 98:260-9. [PMID: 17665547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
BACKGROUND As statins have the anti-atherosclerotic pleiotropic effects, we retrospectively examined the effects of statins on restenosis after percutaneous coronary intervention (PCI). METHODS We reviewed consecutive 341 patients who underwent successful PCI and follow-up angiography six months after the procedure between January 2002 and December 2004. Statins were initiated in 207 patients (statin group), but not in the other 134 (control group). We compared the angiographic findings, low-density lipoprotein cholesterol (LDL-C) and C-reactive protein (CRP) between the two groups. RESULTS LDL-C level in statin group was significantly higher than those in control group at baseline (116.0 +/- 35.8 vs 103.1 +/- 24.5 mg/dL, p < 0.01); however, the values were inverted between the two groups at follow-up (99.9 +/- 29.5 vs 107.6 +/- 26.0 mg/dL, p = 0.015). CRP levels were comparable between these two groups. Statin group showed significantly lower angiographic restenosis (defined as > or = 50% stenosis at the target site) rate (35.3 vs 46.3%, p = 0.042) and target lesion revascularization (TLR) rate (14.5 vs 23.9%, p = 0.018) than control group. Multivariate analysis indicated that the prescription of statin, but not LDL-C level at follow-up and % reduction of LDL-C during the follow-up period, predict the restenosis prevention. CONCLUSIONS Statins can decrease restenosis and TLR rate after PCI, independent of lipid-lowering effect and CRP level in this study.
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Affiliation(s)
- Tohru Yamawaki
- Division of Cardiovascular Medicine, Aso-Iizuka Hospital, Fukuoka, Japan
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Fukumoto Y, Yamada A, Ando H, Sobashima A, Kuwata K, Yamawaki T, Nakamura R, Eto Y, Kishi T, Ikeuchi M, Sekiya M, Ozawa M, Okamatsu S. Fatal case of amiodarone-induced acute respiratory distress syndrome in a patient with severe left ventricular dysfunction due to extensive anterior acute myocardial infarction. Fukuoka Igaku Zasshi 2006; 97:37-41. [PMID: 16642955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We here report a case of 71-year-old man with acute extensive anterior myocardial infarction, who was complicated with ventricular tachycardia (VT) even after successful percutaneous coronary intervention. As intravenous administration of nifekalant terminated VT, we started oral administration of amiodarone (day 1). We gave 400 mg of amiodarone a day for the first week and 200 mg a day from the second week. The patient was stable with normoxia by day 20, in spite of pulmonary congestion-like infiltrates on chest X-ray. On day 21, he was complicated with acute respiratory distress syndrome. Immediate discontinuance of amiodarone and high-dose pulse glucocorticoid therapy with intubation slightly improved the infiltrations on chest X-ray. However, glucocorticoid therapy induced hyperglycemia with an increase in plasma osmolality, complicated with hypoalbuminemia, and gastrointestinal bleeding. Despite treatment with a large amount of saline, high-doses of catecholamines, and blood transfusion, the patient died on day 28. It is sometimes difficult to diagnose congestive heart failure or amiodarone-induced pulmonary infiltrates in patients with severe left ventricular dysfunction.
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Affiliation(s)
- Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Aso-Iizuka Hospital, Fukuoka, Japan.
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Kishi T, Yamada A, Ando H, Sobashima A, Fukumoto Y, Ikeuchi M, Sekiya M, Ozawa M, Takeshita A, Okamatsu S. Human Atrial Natriuretic Peptide Has the Protective Effect on Renal Function in Patients with Congestive Heart Failure. J Card Fail 2005. [DOI: 10.1016/j.cardfail.2005.08.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
The effect of Wen-Pi-Tang extract on influenza virus infection in mice was investigated. The administration of Wen-Pi-Tang extract at a dose of 100mg/kg body wt. for 8 consecutive days to influenza virus-infected mice reversed the lack of body wt. gain and prevented the increase in lung weight caused by the infection in comparison with uninfected mice, while allopurinol, a xanthine oxidase (XOD) inhibitor, did not show these effects. The serum levels of uric acid and allantoin in influenza virus-infected mice were reduced by Wen-Pi-Tang extract administration. Moreover, Wen-Pi-Tang extract reduced the uric acid level more as the dose increased, although it exerted lower activity than allopurinol. The XOD activity of the lungs was elevated by influenza virus infection, but Wen-Pi-Tang extract administration inhibited this activity, indicating prevention of lung damage by oxygen free radicals generated by XOD. After the administration of Wen-Pi-Tang extract to influenza virus-infected mice, the lung superoxide dismutase activity was not significantly different from that of uninfected mice, whereas lung catalase activity was lower in the former than the latter, but slightly higher than that of influenza virus-infected mice, suggesting that Wen-Pi-Tang extract may prevent the generation of highly toxic hydroxyl radicals in the lung. In addition, the administration of both Wen-Pi-Tang extract and allopurinol reduced the degree of lung consolidation caused by influenza virus infection. In particular, Wen-Pi-Tang extract reduced the consolidation score in a dose-dependent manner and more markedly than allopurinol did. This study suggests that Wen-Pi-Tang extract could improve pathological conditions of the lungs induced by influenza virus infection.
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Affiliation(s)
- T Yokozawa
- Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, Toyama 930-0194, Japan.
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Abstract
Sarcoidosis is a systemic granulomatous disorder of unknown etiology, which involves the lung, eye, liver, and other organs. Vascular endothelial growth factor (VEGF) is a major regulator of angiogenesis involved in an important role in the development of granuloma. However, only a limited number of studies have reported on the relationship between serum VEGF values and the clinical status of sarcoidosis. Concentrations of serum VEGF were determined in 33 patients with sarcoidosis. We investigated the correlation between serum VEGF values and extent of disease, prognosis, and radiographic stage compared with serum angiotensin converting enzyme (ACE) values as another candidate. Concentrations of serum VEGF in patients who received corticosteroid treatment were significantly higher than those of patients with spontaneous remission (p < 0.05). In addition, serum VEGF values in patients with extrathoracic involvements were significantly higher than those of patients with sarcoid lesions limited to the thoracic space (p < 0.05), accompanied by a tendency to increase the number of organs involved. The values of serum ACE revealed no relationship to the values of serum VEGF, administration of corticosteroid, or extrathoracic involvements. We concluded that serum VEGF values in patients with sarcoidosis is a predictive factor in determining extrathoracic organ involvements and as a parameter for deciding the necessity of treatment with corticosteroid. Serum VEGF might be a useful marker as a prognostic indicator in sarcoidosis.
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Affiliation(s)
- M Sekiya
- Department of Respiratory Medicine, Juntendo University School of Medicine, Tokyo, Japan.
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Sekiya M, Uesugi M, Nakamoto T. Flow in a Liquid Sphere Moving with a Hypersonic Velocity in a Rarefied Gas: An Analytic Solution of Linearized Equations. ACTA ACUST UNITED AC 2003. [DOI: 10.1143/ptp.109.717] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Holden M, Krasatanova S, Xue B, Pang S, Sekiya M, Momol E, Gonsalves D. GENETIC ENGINEERING OF GRAPE FOR RESISTANCE TO CROWN GALL. ACTA ACUST UNITED AC 2003. [DOI: 10.17660/actahortic.2003.603.62] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
STUDY DESIGN Cases are reported and the literature is reviewed. OBJECTIVE To present three cases involving idiopathic herniation of the thoracic cord. SUMMARY OF BACKGROUND DATA Idiopathic spinal cord herniation is a very rare condition. Only 20 cases have been reported. The radiographic and intraoperative findings concerning this herniation remain insufficient, and its pathophysiology is less understood. METHODS Idiopathic herniation of the thoracic spine was managed operatively in the three cases. The clinical, radiologic, and intraoperative features in these cases are described, and the pathophysiology of this disorder is discussed from a review of the literature. RESULTS Two of the three patients had a defect in the inner layer of the duplicated ventral dura mater through which the spinal cord was herniated. The third patient had a ventral epidural cyst into which the spinal cord had protruded. Operative reduction of the spinal cord improved motor power in all three patients, although sensory disturbance remained unchanged. CONCLUSIONS There should be several types of idiopathic spinal cord herniation. This is the first report of this herniation that focuses the abnormalities of the ventral dura mater, together with image and intraoperative findings.
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Affiliation(s)
- T Aizawa
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Japan.
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Watanabe K, Sekiya M, Tsuruoka T, Funada JI, Miyagawa M. Usefulness of (123)I-BMIPP with myocardial imaging for evaluation of the efficacy of drug therapy in patients with chronic heart failure. J Card Fail 2001; 7:257-64. [PMID: 11561227 DOI: 10.1054/jcaf.2001.26313] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 11/18/2022]
Abstract
BACKGROUND Fatty acid is a main source of cardiac energy in aerobic conditions. We used iodine-123-beta-methyl-iodophenyl pentadecanoic acid ((123)I-BMIPP) myocardial scintigraphy to study the efficacy of the angiotensin-converting enzyme inhibitor (ACEI) enalapril in the treatment of chronic heart failure (CHF) by evaluating its therapeutic effects on myocardial fatty acid metabolism. METHODS AND RESULTS New York Heart Association functional class status, left ventricular end-diastolic diameter, percent fractional shortening, the ratio between early and late peaks of flow velocity, (123)I-BMIPP myocardial-to-mediastinal uptake ratio, and mean washout rate were measured in 42 patients (31 men and 11 women; mean age, 58 +/- 3 years) with CHF before treatment and 3 months after treatment. There was a significant correlation between myocardial fatty acid metabolism and other variables as well as between the degree of improvement in myocardial fatty acid metabolism and the degree of improvement in other variables. CONCLUSIONS Enalapril improved symptoms and cardiac function in patients with CHF. These improvements significantly correlated with improvement of (123)I-BMIPP metabolism in the myocardium. (123)I-BMIPP scintigraphy is useful for evaluating the efficacy of drug therapy for CHF based on myocardial fatty acid metabolism.
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Affiliation(s)
- K Watanabe
- Department of Cardiology, Uwajima City Hospital, 1-1 Goten-machi, Uwajima City, Ehime, 798-8510, Japan
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Abstract
Chondrules are silicate spherules that are found in abundance in the most primitive class of meteorites, the chondrites. Chondrules are believed to have formed by rapid cooling of silicate melt early in the history of the Solar System, and their properties should reflect the composition of (and physical conditions in) the solar nebula at the time when the Sun and planets were forming. It is usually believed that chondrules lost all their noble gases at the time of melting. Here we report the discovery of significant amounts of trapped noble gases in chondrules in the enstatite chondrite Yamato-791790, which consists of highly reduced minerals. The elemental ratios 36Ar/132Xe and 84Kr/132Xe are similar to those of 'subsolar' gas, which has the highest 36Ar/132Xe ratio after that of solar-type noble gases. The most plausible explanation for the high noble-gas concentration and the characteristic elemental ratios is that solar gases were implanted into the chondrule precursor material, followed by incomplete loss of the implanted gases through diffusion over time.
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Affiliation(s)
- R Okazaki
- Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University 33, Hakozaki, Fukuoka 812-8581, Japan.
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Funahashi H, Imai T, Mase T, Sekiya M, Yokoi K, Hayashi H, Shibata A, Hayashi T, Nishikawa M, Suda N, Hibi Y, Mizuno Y, Tsukamura K, Hayakawa A, Tanuma S. Seaweed prevents breast cancer? Jpn J Cancer Res 2001; 92:483-7. [PMID: 11376555 PMCID: PMC5926746 DOI: 10.1111/j.1349-7006.2001.tb01119.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
To investigate the chemopreventive effects of seaweed on breast cancer, we have been studying the relationship between iodine and breast cancer. We found earlier that the seaweed, wakame, showed a suppressive effect on the proliferation of DMBA (dimethylbenz(a)anthracene)‐induced rat mammary tumors, possibly via apoptosis induction. In the present study, powdered mekabu was placed in distilled water, and left to stand for 24 h at 4°C. The filtered supernatant was used as mekabu solution. It showed an extremely strong suppressive effect on rat mammary carcinogenesis when used in daily drinking water, without toxicity. In vitro, mekabu solution strongly induced apoptosis in 3 kinds of human breast cancer cells. These effects were stronger than those of a chemothera‐peutic agent widely used to treat human breast cancer. Furthermore, no apoptosis induction was observed in normal human mammary cells. In Japan, mekabu is widely consumed as a safe, inexpensive food. Our results suggest that mekabu has potential for chemoprevention of human breast
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Affiliation(s)
- H Funahashi
- Department of Surgery II, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8550, Japan.
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Abstract
The aim of this study was to evaluate the effects of combination psychotropic drug treatment on heart rate variability (HRV), which was mainly controlled by the parasympathetic nervous system. Mean R-R intervals (mRR) and coefficient of variation (CV), an index of HRV, were studied in 22 psychiatric patients and 21 age- and sex-matched healthy controls. Next, in the patient group focusing on both anticholinergic and antidopaminergic properties, combination psychotropic drug daily doses were converted into biperiden milligram equivalents (BPDeq) and chlorpromazine milligram equivalents (CPZeq), respectively. The relationship between mRR and CV and these equivalent dosages was examined. A significant reduction in both mRR (P < 0.05) and CV (P < 0.05) was found in the patient group. In addition, significant negative correlations were observed between the dose of BPDeq and mRR (P < 0.05), and between the dose of BPDeq and CV (P < 0.005). In contrast, no significant correlations were observed between the dose of CPZeq and either parameter. These findings suggest that the effects of combination psychotropic drug treatment on HRV are mainly due to their anticholinergic properties. Therefore, CV is a useful indicator to assess the parasympathetic activity of psychiatric patients under combination psychotropic drug treatment.
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Affiliation(s)
- M Ikawa
- Seijuji Hospital, 1448 Kujiri, Izumi-cho, Toki-City 509-5142, Japan.
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Sekiya M, Suzuki J, Watanabe K, Funada J, Otani T, Akutsu H. Beneficial effect of troglitazone, an insulin-sensitizing antidiabetic agent, on coronary circulation in patients with non-insulin-dependent diabetes mellitus. Jpn Circ J 2001; 65:487-90. [PMID: 11407727 DOI: 10.1253/jcj.65.487] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Evidence is increasing for small vessel remodeling and disturbance of endothelium-dependent vasodilation in diabetic patients. Insulin increases vascular wall thickening and produces endothelial dysfunction. Troglitazone, a new insulin-sensitizer antidiabetic agent, is considered to reduce plasma insulin level and the present study assessed its effect on the coronary circulation of the patients with non-insulin-dependent diabetes mellitus (NIDDM). Analysis of the myocardial washout rate with adenosine triphosphate-stress thallium-201 scintigraphy was used to estimate coronary circulation, and for estimation of insulin sensitivity, the homeostasis model insulin resistance index (HOMA-R) was calculated. Patients were treated with monotherapy of either troglitazone (200 mg bid, n=12) or glibenclamide (2.5 mg daily, n=12) for 3 months. Age-, sex- and risk factors-matched subjects without NIDDM were employed as a control. Fasting plasma glucose and hemoglobin A1c were similarly decreased by troglitazone or glibenclamide. Plasma insulin level (pmol/L) decreased from 66.6+/-10.8 to 39.0+/-7.2 with troglitazone, but was unchanged by glibenclamide (58.8+/-7.2 to 66.0+/-10.8). The diabetic groups had a significantly lower washout rate than controls, which was improved by troglitazone, but not by glibenclamide. In addition, the increase in washout rate correlated significantly with the decrease in HOMA-R in the troglitazone group. In conclusion, troglitazone can restore coronary circulation by improving insulin resistance in patients with NIDDM.
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Affiliation(s)
- M Sekiya
- Department of Cardiology, Ehime National Hospital, Onsen-gun, Japan.
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Funada J, Sekiya M, Otani T, Watanabe K, Akutsu H. [Impact of high remnant-like lipoproteins on the function of peripheral arterial endothelium in patients with hyperlipidemia and normolipidemia: estimation using Doppler flow analysis]. J Cardiol 2001; 37:267-76. [PMID: 11392896] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
OBJECTIVES Cholesterol levels of remnant-like lipoprotein (RLP-cholesterol: RLP-C), which reflect remnant lipoproteins, are associated with coronary arterial endothelial functions and cardiovascular events. The influence of RLP-C on peripheral vascular endothelial functions in patients with hyperlipidemia and normolipidemia was evaluated based on the reactivity of the antecubital artery to acetylcholine (Ach) and isosorbide dinitrate (ISDN) using a Doppler guidewire. METHODS Protocol 1: Five patients were selected, and the dose-response of the antecubital artery was evaluated by administering Ach (0.5, 5, and 50 micrograms/30 sec) or ISDN (0.025, 0.25, and 2.5 mg/30 sec). An index of vascular reactivity (brachial artery response: BR) was determined by dividing the maximal blood flow velocity after the administration of Ach or ISDN by resting blood flow velocity. Protocol 2: BR was evaluated in 48 patients after administering Ach 50 micrograms or ISDN 2.5 mg. Subsequently, these patients were divided into the following three groups based on early morning RLP-C levels: Group L (n = 11), RLP-C < 2.0 mg/dl (minimal detectable level); Group M (n = 21), 2.0 mg/dl < or = RLP-C < 5.0 mg/dl; and Group H (n = 16), 5.0 mg/dl < or = RLP-C. The factors that regulate BR-Ach 50 micrograms were also evaluated in 34 normolipidemic patients. RESULTS Protocol 1: BR dose-dependently increased after the administration of Ach and ISDN. Protocol 2: BR-Ach 50 micrograms was significantly less in Group H (3.1 +/- 0.8) than in Groups M (3.8 +/- 0.9, p < 0.03) and L (4.2 +/- 0.9, p < 0.01). However, there were no significant differences in BR-ISDN 2.5 mg between the three groups. Univariate analysis in normolipidemic patients revealed that BR-Ach 50 micrograms was correlated with age (r = -0.355, p < 0.05), RLP-C (r = -0.488, p < 0.01), low-density lipoprotein cholesterol (r = -0.382, p < 0.03), systolic blood pressure (r = -0.354, p < 0.05), and diastolic blood pressure (r = -0.406, p < 0.02). Multivariate analysis using these five factors as independent variables revealed that age, RLP-C, and low-density lipoprotein cholesterol regulated BR-Ach 50 micrograms. CONCLUSIONS Peripheral vascular endothelial dysfunction may occur in patients with high levels of RLP-C. RLP-C is an independent lipid factor that regulates peripheral vascular endothelial functions even in normolipidemic patients.
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Affiliation(s)
- J Funada
- Division of Cardiology, Ehime National Hospital, Yokogawara 366, Shigenobu-cho, Onsen-gun, Ehime 791-0281
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Watanabe K, Sekiya M, Ikeda S, Funada J, Suzuki J, Sueda S, Tsuruoka T. Subacute and chronic effects of DDD pacing on left ventricular diastolic function in patients with non-obstructive hypertrophic cardiomyopathy. Jpn Circ J 2001; 65:283-8. [PMID: 11316124 DOI: 10.1253/jcj.65.283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The present study examined the ability of dual-chamber (DDD) pacing to improve symptoms and exercise tolerance in patients with non-obstructive hypertrophic cardiomyopathy (HNCM). Seven patients with HNCM who had failed to benefit from pharmacotherapy participated in the study. The New York Heart Association (NHYA) functional class status and exercise tolerance, which was determined by the treadmill exercise test, were recorded and an echocardiographic observation was performed before, and 1 week, 3 months and 1 year after the implantation of a permanent DDD pacemaker. The atrioventricular delay (AVd) was determined by measuring the point of peak rapid filling velocity and maximum cardiac output (CO). Two patients were not implanted with a permanent pacemaker because their CO and blood pressure decreased or because palpitation occurred during temporary pacing. The ratio between early and late peaks of flow velocity (1.56, 1.21,0.95, and 0.86 before implantation and 1 week, 3 months and 1 year after implantation, respectively); deceleration time (ms: 263.2, 217.6, 204.6, 187.0); peak filling rate (ml/s: 146.2, 204.0, 233.2, 243.6); NYHA functional class status (2.0, 1.8, 1.6, 1.4); and exercise tolerance (s: 203, 264, 403, 480) were significantly improved after implantation. However, left ventricular dimension, percent fractional shortening, ejection fraction, acceleration time and the isovolumic relaxation time were not changed significantly. In conclusion, DDD pacing improved symptoms and the NYHA functional class status, which is associated with improvement of left ventricular diastolic function. It is proposed that DDD pacing would be useful in patients not only with obstructive but also non-obstructive hypertrophic cardiomyopathy refractory to medical treatment, depending on the careful selection of subjects.
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Affiliation(s)
- K Watanabe
- Department of Cardiology, Saiseikai Saijo Hospital, Ehime, Japan
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Watanabe K, Fukuda H, Sueda S, Funada J, Kitakaze M, Sekiya M. Metabolism of hepatocyte growth factor in the heart in patients with coronary artery disease: implication for coronary arteriosclerosis. Cardiovasc Drugs Ther 2001; 15:147-53. [PMID: 11669408 DOI: 10.1023/a:1011174913176] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE HGF, one of endothelium-specific growth factors, might contribute to the repair process of vascular endothelial cell damage, suggesting that serum HGF concentration may be elevated in patients with arteriosclerosis. However, the cardiac metabolism of HGF has not been examined in patients with coronary artery disease (CAD). We examined the levels of hepatocyte growth factor (HGF) in the coronary circulation and its correlation with the severity of arteriosclerosis in patients with CAD. METHODS We measured serum HGF concentration obtained from the coronary sinus (CS) and ascending aorta (AA) in patients with atherosclerotic CAD (Group E, n = 33) or vasospastic angina (Group V, n = 26), or normal control subjects (Group N, n = 12). In Group E, the severity of coronary artery stenosis was evaluated using the Gensini's score. RESULTS Serum HGF concentrations (ng ml) in the CS were 0.112 +/- 0.008 in Group E (p < 0.001 vs. Group V, p < 0.001 vs. Group N), 0.197 +/- 0.012 in Group V (p = 0.031 vs. Group N), and 0.245 +/- 0.021 in Group N. Serum HGF concentrations in the AA were 0.282 +/- 0.014 in Group E (p = 0.045 vs. Group V, p = 0.021 vs. Group N), 0.246 +/- 0.012 in Group V, and 0.237 +/- 0.009 in Group N. Serum HGF extraction in the heart (HGF in the AA-HGF in the CS) in Group E (0.170 +/- 0.018) was significantly higher compared with in Group V (0.049 +/- 0.011) or Group N (0.008 +/- 0.005). There was a significant negative correlation between the severity of coronary arteriosclerosis and serum HGF concentration in CS (r = -0.66, p < 0.001), and a significant positive correlation between the severity of coronary arteriosclerosis and HGF extraction in the heart (r = 0.75. p < 0.001). CONCLUSIONS We conclude that the difference of HGF levels between CS and AA in patients with CAD are decreased, and extent of decreases in HGF levels correlates with the severity of coronary arteriosclerosis. The abnormality of HGF metabolism in the heart may contribute to the progression of coronary arteriosclerosis.
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Affiliation(s)
- K Watanabe
- Department of Cardiology, Saiseikai Saijo Hospital, Ehime, Japan.
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31
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Sekiya M, Ishibashi S. [Helsinki Heart Study]. Nihon Rinsho 2001; 59 Suppl 3:404-9. [PMID: 11347103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- M Sekiya
- Department of Metabolic Diseases, Hospital, Faculty of Medicine, University of Tokyo
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Mochizuki T, Ohtani T, Higashino H, Sugawara Y, Tsuda T, Sekiya M, Miyagawa M, Ohmoto K, Ikezoe J. Tricuspid atresia with atrial septal defect, ventricular septal defect, and right ventricular hypoplasia demonstrated by multidetector computed tomography. Circulation 2000; 102:E164-5. [PMID: 11076835 DOI: 10.1161/01.cir.102.20.e164] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- T Mochizuki
- Department of Radiology, Ehime University School of Medicine, Ehime National Hospital, Japan.
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Watanabe K, Suzuki J, Sueda S, Tsuruoka T, Ikeda S, Sekiya M, Funada J, Miyakawa M. [Usefulness of washout rate analysis in adenosine triphosphate-stress thallium-201 myocardial scintigraphy in patients with vasospastic angina]. J Cardiol 2000; 36:231-9. [PMID: 11079228] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
OBJECTIVES This study evaluated the usefulness of washout rate analysis in adenosine triphosphate(ATP) stress thallium-201 scintigraphy for the diagnosis of vasospastic angina. METHODS This study included 76 patients with vasospastic angina and 18 normal controls undergoing coronary arteriography. If significant coronary artery stenosis (> or = 50%) was pointed out, the subject was excluded from this study. 111 MBq of thallium-201 was intravenously injected 3 min after ATP loading (0.16 mg/kg/min) was started. Single photon emission computed tomography (SPECT) was performed 10 min and 4 hr after intravenous injection of ATP. The mean washout rate (%) was calculated based on a bull's eye map and was divided into 3 regions, the antero-septal/lateral/inferior regions. The washout rate in each region was calculated. Regional uptake was visually estimated based on the 17 segments of SPECT images. RESULTS The washout rate in the normal control group was 48.9 +/- 4.1 (mean +/- SD)%. In patients with vasospastic angina, the washout rate in areas with coronary vasospasm was 33.4 +/- 5.5%. This value was significantly lower than in the areas without coronary vasospasm (42.8 +/- 3.6%). The usefulness of washout rate analysis in the diagnosis of vasospastic angina with a cut-off value of less than -2SD from normal washout rate in the 3 regions was examined. A significantly higher diagnostic value was found by washout rate analysis (sensitivity 72.3%, specificity 79.7%, and accuracy 74.6%) compared with visual evaluation of early images (sensitivity 50.3%, specificity 73.9%, and accuracy 57.5%). CONCLUSIONS The diagnostic value of washout rate analysis was significantly higher (73.1%) compared with visual evaluation of early images (50.3%) in patients with multivessel vasospastic angina.
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Affiliation(s)
- K Watanabe
- Division of Cardiology, Saiseikai Saijo Hospital, Ehime
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Koyama Y, Adachi M, Sekiya M, Takekawa M, Imai K. Histone deacetylase inhibitors suppress IL-2-mediated gene expression prior to induction of apoptosis. Blood 2000; 96:1490-5. [PMID: 10942396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Histone deacetylase (HDAC) inhibitors can induce transcriptional activation of a number of genes and induce cellular differentiation as histone acetylation levels increase. Although these inhibitors induce apoptosis in several cell lines, the precise mechanism by which they do so remains obscure. This study shows that HDAC inhibitors, sodium butyrate and trichostatin A (TSA), abrogate interleukin (IL)-2-mediated gene expression in IL-2-dependent cells. The HDAC inhibitors readily induced apoptosis in IL-2-dependent ILT-Mat cells and BAF-B03 transfectants expressing the IL-2 receptor betac chain, whereas they induced far less apoptosis in cytokine-independent K562 cells. However, these inhibitors similarly increased acetylation levels of histones in both cells. Although histone hyperacetylation is believed to lead to transcriptional activation, the results showed an abrogation of IL-2-mediated induction of c-myc, bag-1, and LC-PTP gene expression. This observed abrogation of gene expression occurred prior to phosphatidylserine externalization, a process that occurs in early apoptotic cells. Considering the biologic role played by IL-2-mediated gene expression in cell survival, these data suggest that its abrogation may contribute to the apoptotic process induced by HDAC inhibitors. (Blood. 2000;96:1490-1495)
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Affiliation(s)
- Y Koyama
- First Department of Internal Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
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35
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Sekiya M, Funada J, Suzuki J, Watanabe K, Miyagawa M, Akutsu H. The influence of left ventricular geometry on coronary vasomotion in patients with essential hypertension. Am J Hypertens 2000; 13:789-95. [PMID: 10933571 DOI: 10.1016/s0895-7061(00)00269-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 01/20/2023] Open
Abstract
The objective of this study was to assess the influence of left ventricular (LV) geometric pattern on coronary vasomotion in patients with essential hypertension. We studied 34 hypertensive patients, who had never been treated, with angiographically normal coronary arteries. Patients were classified into four LV geometric patterns by echocardiography: normal, concentric remodeling, eccentric hypertrophy, and concentric hypertrophy. The responses of coronary vasomotion in left anterior descending artery to vasoactive agents (acetylcholine, isosorbide dinitrate, adenosine triphosphate) were examined using a Doppler guidewire and quantitative coronary angiography. The percent increase in coronary blood flow evoked with acetylcholine (endothelium-dependent vasomotion) showed lowest in concentric hypertrophy, followed by eccentric hypertrophy, concentric remodeling, and normal geometry. The significant linear relationship between acetylcholine-induced coronary blood flow and LV mass was noted. There was no difference in the percent increase in coronary blood flow evoked with isosorbide dinitrate (endothelium-independent vasomotion of conduit vessel) among the four groups. The percent increase in coronary blood flow evoked with adenosine triphosphate (endothelium-independent vasomotion of resistant vessel) was significantly lower in patients with concentric hypertrophy than in the other three groups. The results in this study suggest that coronary vasomotion may be associated with LV geometry in patients with hypertension. The endothelium-dependent vasodilation is impaired progressively as LV hypertrophy advances. The endothelium-independent vasodilation of microvessels is impaired only in concentric hypertrophy. This advanced abnormality of coronary vasomotion may contribute to the high cardiovascular morbidity and mortality in patients with concentric hypertrophy.
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Affiliation(s)
- M Sekiya
- Department of Cardiology, Ehime National Hospital, Japan.
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36
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Yamamoto H, Konishi Y, Mineo S, Sekiya M, Kohno T, Kohno M. Characteristics of polyarthritis in rabbits by hyperimmunization with attenuated Enterococcus faecalis. Exp Toxicol Pathol 2000; 52:247-55. [PMID: 10930126 DOI: 10.1016/s0940-2993(00)80041-x] [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] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
To produce polyarthritis and rheumatoid factor like substance (RFLS), rabbits were hyperimmunized intravenously with 0.02% thimelosal (TMS)-treated Enterococcus faecalis (E. faecalis) as a persistent bacterial flora. Swelling of knee joints occurred at a rate of 41% (27/66), and of shoulder joints at a rate of 25% (17/66) while that of elbow joints occurred at a rate of 4.5% (3/66). On culturing of knee joint fluids, no colonies appeared while 2/4 fluid specimens from the shoulder joints gave positive colonies for 78 days after the first immunization; thereafter, no colonies appeared. On histological examination, in early stages, acute inflammatory reactions with degenerative changes of synovial tissue was observed. In later stages, chronic inflammatory changes, proliferation of synovial cells with pannus formation, destruction of articular cartilage and subchondral bone were observed. RFLS titer showed bi-phasic peaks at 11 days and 41 days after the first immunization. A high incidence of polyarthritis, particularly knee joints, occurred. Thus, hyperimmunization with attenuated E. faecalis as a normal intestinal flora may provide an animal model of chronic polyarthritis.
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Affiliation(s)
- H Yamamoto
- Laboratory of Pathology, Kohno Clinical Medicine Research Institute, Tokyo, Japan.
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37
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Ogimoto A, Sekiya M, Funada J, Miyagawa M, Kubo Y, Akutsu H. Antiphospholipid syndrome with acute myocardial infarction and portal vein occlusion: a case report. Jpn Circ J 2000; 64:468-70. [PMID: 10875740 DOI: 10.1253/jcj.64.468] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A 62-year-old woman was admitted to hospital because of chest oppression and abdominal discomfort. Coronary arteriography revealed that the proximal left anterior descending artery had a large thrombus with TIMI (Thrombolysis in Myocardial Infarction) Grade 3 flow. On the second hospital day, she had sudden hematemesis because of esophageal varices. Her general condition became stable with conventional therapy. On the 20th hospital day, coronary arteriography and arterial portography showed that the thrombus had diminished. Arterial portography also revealed total occlusion of the portal vein as well as giant gastric varices. She was diagnosed as antiphospholipid syndrome, based on the presence of lupus anticoagulant. The treatment of this case was very complicated because of the bleeding from the esophageal varices induced by the anticoagulant therapy for the thrombus. Prednisolone was administered for 1 month, but no remarkable effects were observed. Therefore, she was treated with endoscopic sclerotherapy for the esophageal varices and anticoagulant therapy for prevention of thrombosis.
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Affiliation(s)
- A Ogimoto
- Department of Cardiology, Ehime National Hospital, Japan
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38
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Ohwada A, Sekiya M, Hanaki H, Arai KK, Nagaoka I, Hori S, Tominaga S, Hiramatsu K, Fukuchi Y. DNA vaccination by mecA sequence evokes an antibacterial immune response against methicillin-resistant Staphylococcus aureus. J Antimicrob Chemother 1999; 44:767-74. [PMID: 10590277 DOI: 10.1093/jac/44.6.767] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [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: 11/14/2022] Open
Abstract
More than 90% of methicillin-resistant Staphylococcus aureus (MRSA) isolates produce a penicillin-binding protein PBP2' (or PBP2a) with low affinity for beta-lactam antibiotics. PBP2' is encoded by the mecA gene, a foreign gene integrated into the chromosome of methicillin-susceptible S. aureus (MSSA). DNA vaccination by injection of transgene-expressing plasmids has been demonstrated to elicit an immune response against transgene-encoded protein. We hypothesized that the application of DNA vaccination with the mecA sequence would elicit protective immunity against MRSA. This immunity was evoked by injection of a mecA-expressing plasmid into BALB/c mice. Anti-PBP2' antibody was detected in the sera obtained from the DNA-vaccinated mice. These sera produced a five-fold increase in phagocytosis of MRSA compared with sera from mice treated with control plasmid. However, there was no difference in phagocytosis of MSSA among these groups. In addition, the in-vivo antibacterial effect of DNA vaccination was demonstrated in mice infected with MRSA. Eight days after iv inoculation of 10(8) cfu of MRSA into mice, the number of bacteria in the kidneys obtained from mice vaccinated with mecA-expressing plasmid (1.48 +/- 0.27 x 10(5) cfu/mg kidney; n = 18) was significantly lower than that from mice vaccinated with negative control plasmid (3.59 +/- 0.57 x 10(5) cfu/mg kidney; n = 17) (P < 0.02) or that from sham-treated mice (3. 43 +/- 0.66 x 10(5) cfu/mg kidney; n = 9) (P < 0.02). Interestingly, PBP2' was found in both the bacterial membrane fraction and the supernatant, thus being accessible to serum antibodies. Together these observations indicate that PBP2' or the mecA sequence may be eligible as a candidate molecule for vaccination against MRSA.
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Affiliation(s)
- A Ohwada
- Department of Respiratory Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421 Japan.
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39
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Kikumori T, Hayashi H, Shibata A, Sekiya M, Itoh T, Mase T, Oiwa M, Imai T, Funahashi H. [Administration of docetaxel in cases of recurrent breast carcinoma with malignant pleural effusion controlled by intrapleural administration of OK-432]. Gan To Kagaku Ryoho 1999; 26:2091-4. [PMID: 10584578] [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
Docetaxel is an anti-tumor agent which promotes the congregation and stabilization of microtubules, there by preventing cell division. It is reported to have anti-tumor activity against breast or non-small cell lung carcinomas which have been resistant to other anti-tumor agents. On the other hand, it causes peripheral edema and effusion in the pleural or peritoneal cavities. Thus, pleural or peritoneal effusions, which require drainage have been considered to be contraindications for the administration of docetaxel. OK-432 is an agent which causes adhesion by evoking a local inflammatory reaction. We experienced two cases of recurrent breast carcinoma with malignant pleural effusion. We successfully managed their pleural effusion with the intrapleural administration of OK-432. Thereafter, we safely administered docetaxel, and obtained good outcomes. The present paper also discussed the synergistic action between these agents.
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Affiliation(s)
- T Kikumori
- Dept. of Surgery II, Nagoya University School of Medicine
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40
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Sekiya M, Ueki J, Ienaga H, Takahashi H, Dambara T, Fukuchi Y. [A case of elderly onset sarcoidosis]. Nihon Ronen Igakkai Zasshi 1999; 36:730-3. [PMID: 10614128 DOI: 10.3143/geriatrics.36.730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although sarcoidosis is generally considered a disease of young and middle aged adults, there have been a certain number of cases among elderly. However it is unknown whether sarcoidosis in the elderly is recurrence of prior disease or initial onset at old ages. We present a 77-year-old woman with sarcoidosis the onset of which was considered to be in the last 6 months prior to the initial diagnosis. The patient was admitted to our hospital for further evaluation of bilateral hilar and mediastinal lymphadenopathy (BHL) and uveitis. BHL was not present in a chest radiograph taken 6 months prior to the admission. A clinical diagnosis of sarcoidosis was made by elevated serum angiotensin converting enzyme (ACE) and lysozyme (24.9 IU/L and 18.2 micrograms/ml, respectively), negative tuberculin skin test, concomitant presence of uveitis, and a high proportion of lymphocytes (33.2%) in bronchoalveolar lavage fluid with an elevated CD4/CD8 ratio (24.5). This is a noteworthy case of sarcoidosis in which we could confirm elderly onset of the disease.
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Affiliation(s)
- M Sekiya
- Department of Respiratory Medicine, Juntendo University School of Medicine
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41
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Watanabe K, Sekiya M, Tsuruoka T, Funada J, Kameoka H, Miyagawa M, Kohara K. Relationship between insulin resistance and cardiac sympathetic nervous function in essential hypertension. J Hypertens 1999; 17:1161-8. [PMID: 10466472 DOI: 10.1097/00004872-199917080-00016] [Citation(s) in RCA: 34] [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] [Indexed: 02/03/2023]
Abstract
BACKGROUND It has been suggested that hyperinsulinemia and insulin resistance participate in the pathogenesis of hypertension, in part by activating sympathetic activity. OBJECTIVE We aimed to examine the relationship between insulin resistance and cardiac sympathetic nervous function in patients with essential hypertension using 123I-metaiodobenzylguanidine (MIBG) cardiac scintigraphy. METHODS AND RESULTS Twenty-eight patients (18 men) with essential hypertension and 11 (seven men) control individuals with a mean age of 55.8+/-3.3 years were recruited. Patients with diabetes mellitus, congestive heart failure or coronary artery disease were excluded from this study. To evaluate insulin resistance, we used steady-state plasma glucose (SSPG; mg/dl) levels measured by the SSPG method. To evaluate cardiac sympathetic nervous function, we calculated the heart-to-mediastinum ratio from the delayed MIBG image (H:M-D) and the mean washout rate (WOR, %). There were significant differences (P<0.01) in SSPG, H:M-D and WOR between the essential hypertension and control individual groups (125 versus 103 mg/dl, 2.2 versus 2.4, and 32 versus 23%, respectively). Stepwise regression analysis showed that SSPG and plasma norepinephrine level are independent predictors for the cardiac sympathetic nervous function obtained from MIBG scintigraphy. CONCLUSIONS These findings indicate that insulin resistance is significantly related to activation of the cardiac sympathetic nervous function associated with left ventricular hypertrophy in patients with essential hypertension.
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Affiliation(s)
- K Watanabe
- Division of Internal Medicine, Minamiuwa Ehime Prefectural Hospital, Japan.
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42
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Watanabe K, Sekiya M, Tsuruoka T, Funada J, Kameoka H. Effect of insulin resistance on left ventricular hypertrophy and dysfunction in essential hypertension. J Hypertens 1999; 17:1153-60. [PMID: 10466471 DOI: 10.1097/00004872-199917080-00015] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND In hypertensive patients, the relationships between glucose tolerance and left ventricular hypertrophy (LVH) and left ventricular diastolic function (LVDF) have been described in several reports. OBJECTIVE In this study, we examined the relationships between insulin resistance and LVH and LVDF in hypertensive patients from the therapeutic perspective. METHODS AND RESULTS The study participants were essential hypertensive patients with impaired glucose tolerance (IGT-HT, n = 26), hypertensive patients with normal glucose tolerance (NGT-HT, n = 39), and normotensive control individuals (n = 18). Insulin resistance was evaluated by the insulin suppression test by use of the steady-state plasma glucose (SSPG) level. Left ventricular mass index (LVMI) and LVDF, which was determined by the E:A ratio, were estimated by echocardiography. Temocapril, an angiotensin-converting enzyme inhibitor, was administered in an open, non-randomized manner with a mean dose of 2.8+/-0.2 mg/ day, and the mean administration period was 18 weeks. The systolic and diastolic blood pressure, the LVMI, and the SSPG level were significantly higher in the hypertensive patients than in the control individuals. The mean systolic and diastolic blood pressures were significantly decreased by treatment with Temocapril. Before treatment, stepwise regression analysis showed that SSPG is an independent predictor for LVMI and LVDF. After treatment, the changes in LVMI (D-LVMI; %) (-15.1+/-1.5), the changes in LVDF (D-E:A; %) (-38.2+/-4.1), and the changes in insulin resistance (D-SSPG; %) (-13.7+/-1.7) were significantly higher in the IGT-HT group than in the NGT-HT group (-11.4+/-1.1, -18.1+/-1.7, -9.4+/-1.4, respectively), and the D-SSPG was an independent predictor for D-LVMI and D-E :A. CONCLUSIONS The results of this study indicate that insulin resistance is an important factor affecting LVH and LVDF.
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Affiliation(s)
- K Watanabe
- Division of Internal Medicine, Minamiuwa Ehime Prefectural Hospital, Japan.
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43
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Sekiya M, Chiba A, Ienaga H, Ueki J, Hasunuma K, Takahashi H, Dambara T, Miyamoto H, Uekusa K, Fukuchi Y. [Intralobar pulmonary sequestration presenting increased serum CEA, CA 19-9, and CA 125, and associated with asymptomatic pulmonary aspergillosis]. Nihon Kokyuki Gakkai Zasshi 1999; 37:433-7. [PMID: 10410550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
A 44-year-old woman was admitted to our hospital for further evaluation of a consolidated shadow in the left lower lobe and the evaluation of serum tumor markers (CEA 46.3 ng/ml, CA 19-9 1911 U/ml, and CA 125 103 U/ml). Chest computed tomography revealed an irregular shaped, low density mass shadow in the left S10 region, suggesting the diagnosis of pulmonary sequestration or bronchial atresia. However digital subtraction angiography failed to demonstrate an anomalous feeding artery. We could not rule out the possibility that a malignant lesion was included in the consolidated shadow. A left thoracotomy revealed an intralobar pulmonary sequestration of the left lower lobe. Hyphae of aspergillus were found in the lumen of the cystic bronchus of the resected lung. Immunohistochemical studies showed strong expression of CEA, CA 19-9, and CA 125 by bronchial epithelia in the pulmonary sequenstration. The serum values of tumor markers returned to their normal ranges after surgery.
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Affiliation(s)
- M Sekiya
- Department of Respiratory Medicine, Juntendo University School of Medicine, Tokyo, Japan
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44
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Arimura Y, Kondoh Y, Kurokawa S, Azuma N, Sekiya M, Nakagawa N, Endo T, Satoh M, Imai K. Chronic ischemic colonic lesion caused by phlebosclerosis with calcification. Am J Gastroenterol 1998; 93:2290-2. [PMID: 9820420 DOI: 10.1111/j.1572-0241.1998.00641.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report here two patients in both of whom ileus finally developed and chronic ischemic colonic lesion caused by phlebosclerosis with calcification was diagnosed. We believe that phlebosclerosis is an old-fashioned diagnostic term, but appropriate here because of the remarkable calcification of the sclerotic walls of the colic veins that seems to be one of the most important hallmarks of this previously unrecognized, "new" condition. Phlebosclerosis could be a novel type of ischemic colitis because of its unique clinical presentations, although the pathogenesis of this unusual venopathy remains unknown.
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Affiliation(s)
- Y Arimura
- First Department of Internal Medicine, Sapporo Medical University, Japan
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45
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Watanabe K, Tsuruoka T, Sekiya M, Funada J, Nakagawa H. [Markedly decreased uptake with 123I-MIBG myocardial scintigraphy in a case with vasospastic angina]. Kaku Igaku 1998; 35:727-32. [PMID: 9847515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
A 68-year-old female whose myocardial sympathetic function was severely damaged with multi-vessel vasospastic angina is presented. She had no signs of autonomic dysfunction or diabetes mellitus. Myocardial imaging with 123I-MIBG showed extremely diminished uptake, but 201TlCl and 123I-BMIPP SPECT images were almost normal. Coronary arteriography revealed no significant atherosclerotic stenosis, multivessel spasm was observed by provocation test using acetylcholine. The extremely diminished uptake of 123I-MIBG was slightly increased in response to medication and the subsequent improvement of the patient's condition. Markedly decreased uptake with 123I-MIBG myocardial scintigraphy was considered to be due to multi-vessel spastic angina. We believe that this method of imaging study is useful for evaluating the healing stage of myocardial sympathetic dysfunction.
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Affiliation(s)
- K Watanabe
- Division of Cardiology and Radiology, Ehime Prefectural Minamiuwa Hospital
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46
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Miyagawa M, Mochizuki T, Murase K, Tanada S, Ikezoe J, Sekiya M, Hamamoto K, Matsumoto S, Niino M. Prognostic value of dipyridamole-thallium myocardial scintigraphy in patients with Kawasaki disease. Circulation 1998; 98:990-6. [PMID: 9737519 DOI: 10.1161/01.cir.98.10.990] [Citation(s) in RCA: 36] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Although coronary artery lesions are critical complications of Kawasaki disease, their long-term outcome is still unclear. It is sometimes difficult to monitor progressive changes from aneurysms to stenotic lesions because coronary angiography (CAG) cannot be repeated very often, especially in infants. Our prospective study was designed to evaluate the prognostic value of dipyridamole-thallium single-photon-emission CT (SPECT) in the long-term follow-up of patients with Kawasaki disease. METHODS AND RESULTS Of 459 consecutive patients with Kawasaki disease, coronary aneurysms were detected in 90 cases by echocardiography during the acute stage. After paired studies of selective CAG and SPECT were conducted, all patients were followed up and monitored for the occurrence of any cardiac events for > or =8 years. During the follow-up interval, there were 15 cardiac events (1 death, 5 infarctions, 2 coronary artery bypass graft operations, and 7 occurrences of unstable angina). Of patients who had some event, thallium redistribution was found on SPECT in 14 (93%, P<0.001). Of the various clinical and scintigraphic image variables, the presence of thallium redistribution was the best multivariate independent predictor of a late cardiac event (chi2=57.8, P<0.0001). The number of aneurysms detected on CAG added minimal statistical improvement to the model (chi2=1.9, P=0.0009). CONCLUSIONS Dipyridamole-thallium SPECT is safely performed and is useful and important for risk stratification in the long-term follow-up of patients with Kawasaki disease.
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Affiliation(s)
- M Miyagawa
- Department of Radiology, Ehime National Hospital, Shigenobu, Japan.
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47
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Abstract
The present study was conducted to assess the preventive effect of combined treatment with probucol, an antioxidant, and cilostazol, a phosphodiesterase inhibitor, against poststenting restenosis. Study patients were randomized to 4 modality groups 1 week before stenting: control, probucol (500 mg/day), cilostazol (200 mg/day), and probucol plus cilostazol. Treatment on these modalities was conducted from 5 prestent days until the poststenting follow-up evaluation (6 poststenting months). All patients received aspirin (81 mg/day). The efficacy of each modality against restenosis was evaluated in a total 126 patients with 165 coronary arterial lesions, using a quantitative method. The decrease in luminal diameter at the poststenting follow-up was 1.04 +/- 0.57 mm for controls, 0.88 +/- 0.82 mm for those taking probucol, 0.61 +/- 0.59 mm for those taking cilostazol (p <0.05 vs control), and 0.40 +/- 0.52 mm (p <0.01 vs control) for the combined treatment group. Restenosis rate per segment was 31.7% for controls, 16.7% for the probucol group, 12.5% for the cilostazol group (p <0.05 vs control), and 9.5% for the combined treatment group (p <0.05 vs the control). Neither mortality, myocardial infarction, stent thrombosis, or coronary bypass surgery, nor any serious complications were observed in the combined treatment group. Combined treatment with probucol and cilostazol has thus proved safe and effective in preventing acute poststenting complications and suppressing chronic restenosis.
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Affiliation(s)
- M Sekiya
- The Department of Cardiology, Ehime National Hospital, Japan
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48
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Ogasawara H, Sekiya M, Murashima A, Hishikawa T, Tokano Y, Sekigawa I, Iida N, Hashimoto H, Hirose S. Very low-dose cyclosporin treatment of steroid-resistant interstitial pneumonitis associated with Sjögren's syndrome. Clin Rheumatol 1998; 17:160-2. [PMID: 9641517 DOI: 10.1007/bf01452266] [Citation(s) in RCA: 13] [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: 11/25/2022]
Abstract
Cyclosporin is known to be effective for both transplantation and a spectrum of immune-mediated diseases. Because this agent also causes severe adverse effects, especially nephrotoxicity, careful monitoring is required for the development of such reactions. Here we report the successful treatment with extremely low-dose cyclosporin (1 mg/kg/day) of a patient who had steroid-resistant interstitial pneumonitis and Sjögren's syndrome.
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Affiliation(s)
- H Ogasawara
- Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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49
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Sasaki S, Tsujisaki M, Jinnohara T, Ishida T, Sekiya M, Adachi M, Takahashi S, Hinoda Y, Imai K. Human tumor growth suppression by apoptosis induced with anti-ErbB-2 chimeric monoclonal antibody. Jpn J Cancer Res 1998; 89:562-70. [PMID: 9685861 PMCID: PMC5921853 DOI: 10.1111/j.1349-7006.1998.tb03298.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We established an anti-ErbB-2 mouse-human chimeric monoclonal antibody (MoAb), CH401, which was able to kill cancer cells overexpressing the ErbB-2 protein in vitro. The analysis of the killing mechanism indicated that MoAb CH401 might be the first anti-erbB-2 mouse-human chimeric MoAb which can induce the apoptosis of cancer cells, since morphological changes and DNA fragmentation were recognized in MoAb CH401-treated cells. The ErbB-2 receptor appears to have two opposing functions: acting as a receptor both for a growth factor and for an apoptotic factor. Our results indicate that MoAb CH401 treatment may prove to be very useful for cancer therapy.
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Affiliation(s)
- S Sasaki
- First Department of Internal Medicine, Sapporo Medical University
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50
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Sekiya M, Hoshi M, Takagishi K, Matsuzaki M. [Diet therapy for diabetics with nephropathy]. Nihon Rinsho 1997; 55 Suppl:47-52. [PMID: 9434441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- M Sekiya
- Department of Medicine, Osaka Kosei-nenkin Hospital
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