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1.
BMC Geriatr ; 23(1): 479, 2023 08 09.
Artigo em Inglês | MEDLINE | ID: mdl-37558986

RESUMO

BACKGROUND: Increased protein intake has been recommended to prevent sarcopenia/frailty, reports on the quantity and quality of protein intake needed and the associated prognosis, particularly in the aging population of Asia, are limited. In this study, we aimed to investigate the relationship between protein intake and mortality in Japanese individuals, aged 85 years and older. METHODS: The data were obtained from The Kawasaki Aging and Wellbeing Project, which is a prospective cohort study of older adults aged between 85 and 89 years with no physical disability at baseline. Of the 1,026 adults in the cohort, 833 were included in the analysis, after excluding those who had not completed a brief, self-administered diet history questionnaire or those who scored less than 24 on the Mini-Mental State Examination. The participants were grouped into quartiles based on protein intake: Q1 (protein < 14.7, %Energy), Q2 (14.7 ≤ protein < 16.7, %Energy), Q3 (16.7 ≤ protein < 19.1, %Energy), and Q4 (≥ 19.1, %Energy). Multivariate Cox proportional hazards models were utilized to evaluate the association between protein intake and all-cause mortality. Kaplan-Meier survival curves were employed to investigate the relationship between protein intake and all-cause mortality. RESULTS: The mean protein intake of our study population was 17.0% of total energy. Animal protein intake, particularly fish intake, increased significantly along with total protein intake. The study had an average observation period of 1,218 days and recorded 89 deaths. After adjusting for age, sex, skeletal muscle mass index, cardiovascular disease, cancer, education, and serum albumin levels, a lower risk of all-cause mortality was observed in the highest protein intake (Q4) group than in the lowest protein intake (Q1) group (hazard ratio: 0.44, 95% confidence interval: 0.22-0.90, p-value: 0.020). CONCLUSION: Protein intake is associated with a reduced risk of all-cause mortality in older adults (aged ≥ 85 years) who engage in independent activities of daily living. This association may impact all-cause mortality independent of muscle mass.


Assuntos
Atividades Cotidianas , Proteínas Alimentares , Humanos , Fatores de Risco , Estudos Prospectivos , Envelhecimento
2.
Lipids Health Dis ; 16(1): 225, 2017 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-29187200

RESUMO

BACKGROUND: We recently reported distinct nature of high-density lipoproteins (HDL) subgroup particles with apolipoprotein (apo) A-I but not apoA-II (LpAI) and HDL having both (LpAI:AII) based on the data from 314 Japanese. While plasma HDL level almost exclusively depends on concentration of LpAI having 3 to 4 apoA-I molecules, LpAI:AII appeared with almost constant concentration regardless of plasma HDL levels having stable structure with two apoA-I and one disulfide-dimeric apoA-II molecules (Sci. Rep. 6; 31,532, 2016). The aim of this study is further characterization of LpAI:AII with respect to its role in atherogenesis. METHODS: Association of LpAI, LpAI:AII and other HDL parameters with apoB-lipoprotein parameters was analyzed among the cohort data above. RESULTS: ApoA-I in LpAI negatively correlated with the apoB-lipoprotein parameters such as apoB, triglyceride, nonHDL-cholesterol, and nonHDL-cholesterol + triglyceride, which are apparently reflected in the relations of the total HDL parameters to apoB-lipoproteins. In contrast, apoA-I in LpAI:AII and apoA-II positively correlated to the apoB-lipoprotein parameters even within their small range of variation. These relationships are independent of sex, but may slightly be influenced by the activity-related CETP mutations. CONCLUSIONS: The study suggested that LpAI:AII is an atherogenic indicator rather than antiatherogenic. These sub-fractions of HDL are to be evaluated separately for estimating atherogenic risk of the patients.


Assuntos
Apolipoproteína A-II/sangue , Apolipoproteína A-I/sangue , Apolipoproteínas B/sangue , Aterosclerose/sangue , Lipoproteínas HDL/sangue , Aterosclerose/genética , Biomarcadores/sangue , Proteínas de Transferência de Ésteres de Colesterol/genética , Feminino , Humanos , Masculino , Triglicerídeos/sangue
3.
Surg Case Rep ; 9(1): 185, 2023 Oct 24.
Artigo em Inglês | MEDLINE | ID: mdl-37872459

RESUMO

BACKGROUND: Few cases of traumatic pneumothorax complicated by thoracic empyema have been reported. The indication of antibiotic prophylaxis administration for traumatic pneumothorax during tube thoracostomy remains controversial, and thoracic injury complicated by empyema can be life-threatening and intractable. CASE PRESENTATION: A 42-year-old male patient was injured during a collision with a passenger car while driving a motorcycle. The patient (body mass index, 37 kg/m2) was diagnosed with right first-to-sixth-rib fractures without a flail segment, right clavicle fracture, and slight hemopneumothorax. Tube thoracostomy was performed for traumatic pneumothorax on day 3 without antibiotic prophylaxis. The patient demonstrated a progressive displaced rib fracture complicated by empyema on day 11. Radical surgery was performed for the empyema with rib fixation on day 15. The postoperative course was uneventful, and the patient was discharged from the hospital on day 31. CONCLUSIONS: A traumatic pneumothorax can be complicated by empyema. Thoracic injuries complicated by empyema can be life-threatening and intractable. Antibiotic prophylaxis for traumatic pneumothorax with tube thoracotomy should therefore be considered in select cases. The strategy for thoracic injury requires the assumption of an occult thoracic infection and chest wall instability.

4.
Acute Med Surg ; 10(1): e907, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38020490

RESUMO

Background: Surgery for incisional hernias with obesity can be more challenging because obesity is associated with perioperative complications. Necrotizing soft tissue infection (NSTI) is a life-threatening condition that requires aggressive surgical management. Few incisional hernias with NSTI have been reported, and the optimal strategy is undetermined. Case Presentation: A 66-year-old obese woman had been diagnosed with incisional hernia 4 years previously but was not treated. She presented with abdominal pain that had worsened 2 weeks previously. Emergency radical surgery was carried out for an incisional hernia with NSTI. The abdominal fascia was sutured directly without mesh. Negative pressure wound therapy was performed after surgery. The postoperative course was uneventful, without recurrence. Conclusions: Aggressive surgery is a valid strategy for life-threatening incisional hernias with NSTI. Strategies should be developed based on physiological and anatomical findings.

5.
Neuro Endocrinol Lett ; 44(5): 336-339, 2023 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-37524323

RESUMO

An 80-year-old Japanese woman had shown no indication of diabetes but regularly saw a primary-care physician for health management. Six months before her referral to our hospital, her HbA1c was 6.0%. She was referred to us for diabetic ketosis because she was urine ketone body-positive with a blood glucose level of 397 mg/dL and HbA1c of 14.6%. She was diagnosed with type 1 diabetes mellitus (T1DM) with glutamic acid decarboxylase (GAD) antibodies >2,000 U/mL (by ELISA) and IA-2 antibodies >30 U/mL. Insulin injections were introduced, and she was discharged. Laboratory tests during her hospitalization were negative for thyroid antibodies (TgAb, TPOAb). Elderly individuals with first-onset T1DM who are positive for IA-2 antibody are rare, and multiple-positive cases of pancreatic islet-associated autoantibodies are particularly rare. IA-2 antibodies have an approx. 60% positive rate in acute-onset T1DM, but they are more likely to be positive in children and adolescents and are known to turn negative earlier than anti-GAD antibodies. Although a large amount of insulin is needed in general in such cases, our patient was successfully treated with a small amount of insulin. IA-2 antibody has been reported to be positive even in GAD antibody-negative individuals. In some cases, IA-2 antibody and other antibodies are positive even in elderly-onset diabetes, and this contributes to the diagnosis of T1DM.


Assuntos
Diabetes Mellitus Tipo 1 , Ilhotas Pancreáticas , Humanos , Criança , Feminino , Adolescente , Idoso , Idoso de 80 Anos ou mais , Diabetes Mellitus Tipo 1/tratamento farmacológico , Hemoglobinas Glicadas , Autoanticorpos , Insulina/uso terapêutico , Glutamato Descarboxilase
6.
Medicine (Baltimore) ; 100(2): e24089, 2021 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-33466171

RESUMO

RATIONALE: Pediatric sports injuries, including those from baseball, most often are musculoskeletal injuries and rarely include blunt abdominal injuries. Duodenal injury is rare and often associated with other organ injuries. Because it has a relatively high mortality, early recognition and timely treatment are needed. Here, we report a case of successful treatment of a pediatric patient with duodenal injury incurred in the context of school baseball. PATIENT CONCERNS: A 13-year-old boy suffered blunt abdominal trauma and a right-hand injury caused by beating his abdomen strongly with his own right knuckle after he performed a diving catch during a baseball game. On the following day, the abdominal pain had worsened. DIAGNOSES: Computed tomography led to a suspicion of injury to the horizontal part of the duodenum. INTERVENTIONS: The duodenal injuries were repaired by simple closure. On the 10th post-operative day, an abscess formed in the retroperitoneal cavity because of an occult pancreatic injury. Ultrasound-guided percutaneous drainage of the cavity was performed. OUTCOMES: The post-operative course of the abscess drainage was uneventful. The patient was discharged from our hospital on day 72 after admission and was in good health at the 9-month follow-up. LESSONS: Regardless of the type of injury, we must assess the life-threatening conditions that can be expected based on the mechanism of the injury. In duodenal injuries, it is critical to perform surgical procedures and post-operative management based on the assumption of injuries to other organs.


Assuntos
Traumatismos Abdominais/cirurgia , Beisebol/lesões , Duodeno/lesões , Ferimentos não Penetrantes/cirurgia , Traumatismos Abdominais/etiologia , Adolescente , Duodeno/cirurgia , Humanos , Masculino , Ferimentos não Penetrantes/etiologia
7.
Eur J Nutr ; 49(2): 119-26, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19784539

RESUMO

BACKGROUND: Astaxanthin is a red carotenoid pigment which has significant potential for antioxidant activity. The macrophages in atherosclerotic lesions, known as activated macrophages, express scavenger receptors responsible for the clearance of pathogenic lipoproteins. In addition, the expression and secretion of proteolytic enzymes, matrix metalloproteinases (MMPs), and pro-inflammatory cytokines are remarkably promoted in activated macrophages. AIM OF THE STUDY: In this study, we investigated the effects of astaxanthin on the expression of scavenger receptors, MMPs, and pro-inflammatory cytokines in macrophages. METHODS: THP-1 macrophages were incubated with 5-10 microM astaxanthin for 24 h. The expression levels of scavenger receptors, MMPs, and pro-inflammatory cytokines were determined by Western blot analysis or real-time RT-PCR. The MMP-9 and -2 activities were examined by gelatin zymography and total MMP activity was measured by fluorometry. RESULTS: We found that astaxanthin remarkably decreased the class A scavenger receptor and CD36 expression in the protein and mRNA levels. Astaxanthin also reduced MMP-1, -2, -3, -9, -12, and -14 activity and expression. The mRNA expression of tumor necrosis factor-alpha, interleukin-1beta, interleukin-6, inducible nitric oxide synthase, and cyclooxygenase-2 were significantly suppressed by astaxanthin. Furthermore, astaxanthin inhibited the phosphorylation of nuclear factor-kappaB. CONCLUSIONS: These results indicate that astaxanthin has inhibitory effects on macrophage activation, such as scavenger receptors up-regulation, MMPs activation, and pro-inflammatory cytokines secretion.


Assuntos
Antioxidantes/farmacologia , Regulação da Expressão Gênica , Ativação de Macrófagos/efeitos dos fármacos , Macrófagos/efeitos dos fármacos , Metaloproteinases da Matriz/metabolismo , Receptores Depuradores Classe A/metabolismo , Xantofilas/farmacologia , Aterosclerose/prevenção & controle , Antígenos CD36/genética , Antígenos CD36/metabolismo , Linhagem Celular , Ciclo-Oxigenase 2/genética , Ciclo-Oxigenase 2/metabolismo , Ativação Enzimática/efeitos dos fármacos , Humanos , Mediadores da Inflamação/metabolismo , Isoenzimas/genética , Isoenzimas/metabolismo , Macrófagos/metabolismo , Metaloproteinases da Matriz/genética , NF-kappa B/metabolismo , Óxido Nítrico Sintase Tipo II/genética , Óxido Nítrico Sintase Tipo II/metabolismo , Fosforilação , Processamento de Proteína Pós-Traducional , RNA Mensageiro/metabolismo , Receptores Depuradores Classe A/genética
10.
Cardiovasc Diabetol ; 7: 16, 2008 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-18507868

RESUMO

BACKGROUND: The large clinical trials proved that Basal-Bolus (BB) insulin therapy was effective in the prevention of diabetic complications and their progression. However, BB therapy needs multiple insulin injections per a day. In this regard, a biphasic insulin analogue needs only twice-daily injections, and is able to correct postprandial hyperglycemia. Therefore it may achieve the blood glucose control as same as that of BB therapy and prevent the diabetic complications including macroangiopathy. METHODS: In PROBE (Prospective, Randomized, Open, Blinded-Endpoint) design, forty-two type 2 diabetic patients (male: 73.8%, median(inter quartile range) age: 64.5(56.8-71.0)years) with secondary failure of sulfonylurea (SU) were randomly assigned to BB therapy with a thrice-daily insulin aspart and once-daily basal insulin (BB group) or to conventional therapy with a twice-daily biphasic insulin analogue (30 Mix group), and were followed up for 6 months to compare changes in HbA1c, daily glycemic profile, intima-media thickness (IMT) of carotid artery, adiponectin levels, amounts of insulin used, and QOL between the two groups. RESULTS: After 6 months, HbA1c was significantly reduced in both groups compared to baseline (30 Mix; 9.3(8.1-11.3) --> 7.4(6.9-8.7)%, p < 0.01, vs BB;8.9(7.7-10.0) --> 6.9(6.2-7.3)%, p < 0.01), with no significant difference between the groups in percentage change in HbA1c (30 Mix; -14.7(-32.5- (-)7.5)% vs BB -17.8(-30.1- (-)11.1)%, p = 0.32). There was a significant decrease in daily glycemic profile at all points except dinner time in both groups compared to baseline. There was a significant increase in the amount of insulin used in the 30 Mix group after treatment compared to baseline (30 Mix;0.30(0.17-0.44) --> 0.39(0.31-0.42) IU/kg, p = 0.01). There was no significant difference in IMT, BMI, QOL or adiponectin levels in either group compared to baseline. CONCLUSION: Both BB and 30 mix group produced comparable reductions in HbA1c in type 2 diabetic patients with secondary failure. There was no significant change in IMT as an indicator of early atherosclerotic changes between the two groups. The basal-bolus insulin therapy may not be necessarily needed if the type 2 diabetic patients have become secondary failure. TRIAL REGISTRATION: Current Controlled Trials number, NCT00348231.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipoglicemiantes/administração & dosagem , Insulina/administração & dosagem , Compostos de Sulfonilureia/administração & dosagem , Adiponectina/sangue , Adulto , Idoso , Aterosclerose/patologia , Glicemia/metabolismo , Progressão da Doença , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Qualidade de Vida , Método Simples-Cego , Resultado do Tratamento , Túnica Íntima/patologia , Túnica Média/patologia
12.
Eur J Pharmacol ; 568(1-3): 242-7, 2007 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-17511984

RESUMO

This study aimed to investigate the effect of the Rho-kinase inhibitor fasudil on the development of diabetic nephropathy and clarify a contribution of the Rho/Rho-kinase pathway to the pathogenesis of diabetic nephropathy. Diabetes was induced in male Sprague-Dawley rats with an intraperitoneal injection of streptozotocin. Animals were then divided into the following 4 groups; normal control rats, diabetic rats, diabetic rats administered fasudil orally and diabetic rats administered fluvastatin (3-hydroxy-methylglutaryl coenzyme A reductase inhibitor, statin) orally. After 1 month of treatment, neither fasudil nor statin had any influence on blood glucose or blood pressure in diabetic rats. While urinary excretion of albumin and 8-hydroxydeoxyguanosine (8-OHdG) was increased in diabetic rats, both of these increases were abolished by fasudil and statin. Rho activity was enhanced in the renal cortex of diabetic rats compared to normal controls, and this enhancement was abolished by statin treatment. Expression of transforming growth factor-beta (TGF-beta) and connective tissue growth factor (CTGF) mRNA was up-regulated in the renal cortex of diabetic rats, and this was abolished by fasudil as well as statin. Expression of NOX4 mRNA (catalytic subunit of NAD(P)H oxidase) was up-regulated in the renal cortex of diabetic rats, an effect which was also abolished by fasudil as well as statin. The present study demonstrates that the Rho/Rho-kinase pathway is involved in up-regulation of TGF-beta, CTGF and NAD(P)H oxidase in diabetic kidney. We conclude that suppression of the Rho/Rho-kinase pathway could be a new strategy for the treatment of diabetic nephropathy.


Assuntos
1-(5-Isoquinolinasulfonil)-2-Metilpiperazina/análogos & derivados , Diabetes Mellitus Experimental/tratamento farmacológico , Nefropatias Diabéticas/tratamento farmacológico , Peptídeos e Proteínas de Sinalização Intracelular/antagonistas & inibidores , Inibidores de Proteínas Quinases/uso terapêutico , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , 1-(5-Isoquinolinasulfonil)-2-Metilpiperazina/uso terapêutico , 8-Hidroxi-2'-Desoxiguanosina , Albuminúria/tratamento farmacológico , Albuminúria/metabolismo , Animais , Glicemia/análise , Pressão Sanguínea/efeitos dos fármacos , Colesterol/sangue , Fator de Crescimento do Tecido Conjuntivo , Desoxiguanosina/análogos & derivados , Desoxiguanosina/urina , Diabetes Mellitus Experimental/metabolismo , Nefropatias Diabéticas/metabolismo , Ácidos Graxos Monoinsaturados/uso terapêutico , Fluvastatina , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Proteínas Imediatamente Precoces/genética , Indóis/uso terapêutico , Peptídeos e Proteínas de Sinalização Intercelular/genética , Córtex Renal/efeitos dos fármacos , Córtex Renal/metabolismo , Masculino , NADPH Oxidase 4 , NADPH Oxidases/genética , RNA Mensageiro/metabolismo , Ratos , Ratos Sprague-Dawley , Estreptozocina , Fator de Crescimento Transformador beta/genética , Quinases Associadas a rho
13.
Jpn J Ophthalmol ; 51(6): 424-30, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-18158592

RESUMO

PURPOSE: To examine the role played by the Rho/Rho kinase pathway in the platelet-derived growth factor BB (PDGF-BB)-induced expression of vascular endothelial growth factor (VEGF) in the diabetic rat retina. METHODS: Male Sprague-Dawley rats were made diabetic by a single intraperitoneal injection of streptozotocin. Diabetic rats and PDGF-BB-exposed primary cultured porcine retinal pericyte cells (PRPCs) were treated with fluvastatin, an HMG-CoA reductase inhibitor, and fasudil, a selective Rho kinase inhibitor. The retinal expression of VEGF was determined by reverse transcriptase-polymerase chain reaction (RT-PCR). The mRNA expression of VEGF and the activation of Rho A were studied by Northern and Western blot analyses. RESULTS: RT-PCR showed that in rats that were diabetic for 4 weeks VEGF mRNA expression levels were 1.8-fold those in control rats. This enhanced expression was blocked by treatment with fluvastatin or fasudil. Exposure of PRPCs to PDGF-BB increased their VEGF mRNA expression threefold, and fluvastatin suppressed this effect. Fluvastatin also suppressed the PDGF-BB-induced activation of Rho GTPase in PRPCs. CONCLUSIONS: The Rho/Rho kinase pathway may be involved in the upregulation of VEGF expression in the diabetic retina, suggesting that fasudil might be useful for the prevention of diabetic retinopathy.


Assuntos
Retinopatia Diabética/genética , Fator de Crescimento Derivado de Plaquetas/farmacologia , Transdução de Sinais/fisiologia , Fator A de Crescimento do Endotélio Vascular/genética , Proteínas rho de Ligação ao GTP/fisiologia , Quinases Associadas a rho/fisiologia , 1-(5-Isoquinolinasulfonil)-2-Metilpiperazina/análogos & derivados , 1-(5-Isoquinolinasulfonil)-2-Metilpiperazina/farmacologia , Indutores da Angiogênese/farmacologia , Animais , Becaplermina , Northern Blotting , Western Blotting , Células Cultivadas , Diabetes Mellitus Experimental/genética , Diabetes Mellitus Experimental/metabolismo , Retinopatia Diabética/metabolismo , Ácidos Graxos Monoinsaturados/farmacologia , Fluvastatina , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacologia , Indóis/farmacologia , Masculino , Pericitos/efeitos dos fármacos , Inibidores de Proteínas Quinases/farmacologia , Proteínas Proto-Oncogênicas c-sis , RNA Mensageiro/metabolismo , Ratos , Ratos Sprague-Dawley , Vasos Retinianos/citologia , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Suínos , Regulação para Cima/efeitos dos fármacos , Fator A de Crescimento do Endotélio Vascular/biossíntese , Proteínas rho de Ligação ao GTP/antagonistas & inibidores , Quinases Associadas a rho/antagonistas & inibidores
14.
Sci Rep ; 6: 31532, 2016 08 16.
Artigo em Inglês | MEDLINE | ID: mdl-27526664

RESUMO

Plasma concentration of apoA-I, apoA-II and apoA-II-unassociated apoA-I was analyzed in 314 Japanese subjects (177 males and 137 females), including one (male) homozygote and 37 (20 males and 17 females) heterozygotes of genetic CETP deficiency. ApoA-I unassociated with apoA-II markedly and linearly increased with HDL-cholesterol, while apoA-II increased only very slightly and the ratio of apoA-II-associated apoA-I to apoA-II stayed constant at 2 in molar ratio throughout the increase of HDL-cholesterol, among the wild type and heterozygous CETP deficiency. Thus, overall HDL concentration almost exclusively depends on HDL with apoA-I without apoA-II (LpAI) while concentration of HDL containing apoA-I and apoA-II (LpAI:AII) is constant having a fixed molar ratio of 2 : 1 regardless of total HDL and apoA-I concentration. Distribution of apoA-I between LpAI and LpAI:AII is consistent with a model of statistical partitioning regardless of sex and CETP genotype. The analysis also indicated that LpA-I accommodates on average 4 apoA-I molecules and has a clearance rate indistinguishable from LpAI:AII. Independent evidence indicated LpAI:A-II has a diameter 20% smaller than LpAI, consistent with a model having two apoA-I and one apoA-II. The functional contribution of these particles is to be investigated.


Assuntos
Apolipoproteína A-II/sangue , Apolipoproteína A-I/sangue , Biologia Computacional , Lipoproteínas HDL/sangue , Proteínas de Transferência de Ésteres de Colesterol/sangue , Proteínas de Transferência de Ésteres de Colesterol/deficiência , Proteínas de Transferência de Ésteres de Colesterol/genética , Feminino , Genótipo , Humanos , Imunoeletroforese , Erros Inatos do Metabolismo Lipídico/sangue , Erros Inatos do Metabolismo Lipídico/genética , Masculino
15.
J Atheroscler Thromb ; 10(2): 117-23, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12740486

RESUMO

In order to identify small G protein (s) which contributes to the proliferation of vascular smooth muscle cells (VSMCs), we examined the effect of an HMG-CoA reductase inhibitor (cerivastatin), a farnesyltransferase inhibitor (FTI-277), a geranyl geranyl transferase inhibitor (GGTI-286) and a Rho kinase inhibitor (Y-27632) on the proliferation of cultured rat VSMCs stimulated with 20ng/ml platelet-derived growth factor (PDGF)-BB. Cerivastatin and GGTI-286, but not FTI-277, suppressed the PDGF-BB-induced activation of extracellular signal related kinase (ERK1/2). The inhibitory effect of cerivastatin on the PDGF-BB-induced activation of ERK1/2 was fully recovered by the addition of geranylgeranyl pyrophosphate (GGPP), but not farnesyl pyrophosphate (FPP). Cerivastatin and GGTI-286, but not FTI-277, suppressed the PDGF-BB-induced [3H] thymidine incorporation and activation of ornitine decarboxylase (ODC), both of which were fully recovered by the addition of GGPP, but not FPP. These data indicate that the PDGF-BB-induced activation of ERK1/2 and proliferation of VSMCs depend upon geranylgeranylated small G protein. Immunoblotting analysis revealed the upregulation of Rho A protein in the membrane fractions of VSMCs stimulated by PDGF-BB. Furthermore, Y-27632 suppressed the PDGF-BB-induced activation of ERK1/2 and proliferation of VSMCs. On the basis of these data, we conclude that PDGF-BB stimulates the proliferation of VSMCs via the activation of Rho A. Rho kinase plays an important role in this process as an effector of Rho A.


Assuntos
Leucina/análogos & derivados , Metionina/análogos & derivados , Miócitos de Músculo Liso/citologia , Miócitos de Músculo Liso/metabolismo , Fator de Crescimento Derivado de Plaquetas/farmacologia , Proteínas Serina-Treonina Quinases/metabolismo , Proteína rhoA de Ligação ao GTP/metabolismo , Amidas/farmacologia , Animais , Arteriosclerose/metabolismo , Divisão Celular/efeitos dos fármacos , Divisão Celular/fisiologia , Células Cultivadas , Inibidores Enzimáticos/farmacologia , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacologia , Peptídeos e Proteínas de Sinalização Intracelular , Leucina/farmacologia , Metionina/farmacologia , Proteína Quinase 1 Ativada por Mitógeno/metabolismo , Proteína Quinase 3 Ativada por Mitógeno , Proteínas Quinases Ativadas por Mitógeno/metabolismo , Miócitos de Músculo Liso/efeitos dos fármacos , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Piridinas/farmacologia , Ratos , Quinases Associadas a rho
16.
Medicine (Baltimore) ; 93(28): e291, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25526469

RESUMO

As a type of Ehlers-Danlos syndrome (EDS), vascular EDs (vEDS) is typified by a number of characteristic facial features (eg, large eyes, small chin, sunken cheeks, thin nose and lips, lobeless ears). However, vEDs does not typically display hypermobility of the large joints and skin hyperextensibility, which are features typical of the more common forms of EDS. Thus, colonic perforation or aneurysm rupture may be the first presentation of the disease. Because both complications are associated with a reduced life expectancy for individuals with this condition, an awareness of the clinical features of vEDS is important. Here, we describe the treatment of vEDS lacking the characteristic facial attributes in a 24-year-old healthy man who presented to the emergency room with abdominal pain. Enhanced computed tomography revealed diverticula and perforation in the sigmoid colon. The lesion of the sigmoid colon perforation was removed, and Hartmann procedure was performed. During the surgery, the control of bleeding was required because of vascular fragility. Subsequent molecular and genetic analysis was performed based on the suspected diagnosis of vEDS. These analyses revealed reduced type III collagen synthesis in cultured skin fibroblasts and identified a previously undocumented mutation in the gene for a1 type III collagen, confirming the diagnosis of vEDS. After eliciting a detailed medical profile, we learned his mother had a history of extensive bruising since childhood and idiopathic hematothorax. Both were prescribed oral celiprolol. One year after admission, the patient was free of recurrent perforation. This case illustrates an awareness of the clinical characteristics of vEDS and the family history is important because of the high mortality from this condition even in young people. Importantly, genetic assays could help in determining the surgical procedure and offer benefits to relatives since this condition is inherited in an autosomal dominant manner.


Assuntos
Colo Sigmoide , Síndrome de Ehlers-Danlos/genética , Face/anatomia & histologia , Perfuração Intestinal/etiologia , Colágeno Tipo III/genética , Diagnóstico Diferencial , Procedimentos Cirúrgicos do Sistema Digestório/métodos , Síndrome de Ehlers-Danlos/complicações , Síndrome de Ehlers-Danlos/diagnóstico , Testes Genéticos , Humanos , Perfuração Intestinal/diagnóstico , Perfuração Intestinal/cirurgia , Masculino , Tomografia Computadorizada por Raios X , Adulto Jovem
17.
PLoS One ; 9(5): e96919, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24810427

RESUMO

PURPOSE: To assess the association between statins and diverse adverse events in Japanese population. METHODS: New users of statin who started statin after 6-month period of non-use were identified in 68 hospitals between January 2008 and July 2010. In addition to the random sample subcohort, we selected additional subcohort members to make the stratified sample subcohort have at least one patient in all subgroups stratified by each combination of statin and hospital. By abstraction from medical records, detailed information was obtained for all potential cases and pre-selected subcohort members. The event review committee consisting of 3 specialists judged whether possible cases met the definition of one of the adverse events of interest, and for adjudicated cases the committee further judged whether statin was a certain, probable or possible cause of the occurrence of the event. Adjusted for covariates including age, gender, status of "switcher", use of high daily dose and comorbidities at baseline, hazard ratio (HR) was estimated by the Cox proportional hazards model with Barlow's weighting method. Data were also analyzed by the method proposed by Breslow in 2009. RESULTS: A total of 6,877 new users of a statin were identified (median age: 66 years; males: 52%). The hazard ratios of increase in serum creatinine for atorvastatin and fluvastatin have wide confidence intervals, but both of the point estimates were around 2.5. Estimates of hazard ratios by the method of Barlow (1999) were similar to those by the method of Breslow (2009). CONCLUSIONS: Use of statin was not associated with a significant increased risk for renal, liver and muscle events. However, the hazard ratio of increase in serum creatinine tended to be high with atorvastatin and fluvastatin to require further studies.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Alanina Transaminase/sangue , Aspartato Aminotransferases/sangue , Criança , Estudos de Coortes , Creatinina/sangue , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/sangue , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/enzimologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/urina , Feminino , Hematúria/induzido quimicamente , Hospitais/estatística & dados numéricos , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Proteinúria/induzido quimicamente , Rabdomiólise/induzido quimicamente , Adulto Jovem
18.
Atherosclerosis ; 226(1): 161-4, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23174369

RESUMO

OBJECTIVE: The effects of potent statins on oxidized lipoprotein biomarkers are not well defined. METHODS AND RESULTS: The VISION (Value of oxIdant lipid lowering effect by Statin InterventiON in hypercholesterolemia) Trial randomized patients with hypercholesterolemia to 12-week administration of pitavastatin 2 mg/day (n = 21) or atorvastatin 10 mg/day (n = 21) and a variety of lipoprotein oxidative biomarkers were measured. Between-group analysis did not reveal any differences except in the ratio of malondialdehyde (MDA)-LDL over apolipoprotein B-100 (MDA-LDL/apoB) in pitavastatin vs. atorvastatin group (-13% vs. -0.7%, p = 0.04). Within-group changes from baseline to 12-week revealed significant increases in OxPL/apoB and reductions in small-dense LDL, MDA-LDL, and lipoprotein-associated phospholipase A(2) measured on circulating apoB particles (Lp-PLA(2)/apoB) in both groups and significant reductions in OxPL/apoAI in the atorvastatin group. CONCLUSIONS: The VISION study describes the first comparison on lipoprotein oxidation biomarkers between pitavastatin and atorvastatin and suggests diverse effects on lipoprotein oxidation markers in patients with hypercholesterolemia.


Assuntos
Ácidos Heptanoicos/farmacologia , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacologia , Hipercolesterolemia/metabolismo , Lipoproteínas/metabolismo , Pirróis/farmacologia , Quinolinas/farmacologia , Atorvastatina , Biomarcadores/sangue , Feminino , Humanos , Hipercolesterolemia/sangue , Masculino , Pessoa de Meia-Idade , Oxirredução , Estudos Prospectivos
19.
PLoS One ; 7(12): e51171, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23226566

RESUMO

BACKGROUND: We aimed to examine associations among serum 25-hydroxyvitamin D (25OHD) levels, 1,25-dihyroxyvitamin D (1,25OHD) levels, vitamin D receptor (VDR) polymorphisms, and renal function based on estimated glomerular filtration rate (eGFR) in patients with type 2 diabetes. METHODS: In a cross-sectional study of 410 patients, chronic kidney disease (CKD) stage assessed by eGFR was compared with 25OHD, 1,25OHD, and VDR FokI (rs10735810) polymorphisms by an ordered logistic regression model adjusted for the following confounders: disease duration, calendar month, use of angiotensin converting enzyme inhibitors/angiotensin receptor blockers or statins, and serum calcium, phosphate, and intact parathyroid hormone levels. RESULTS: 1,25OHD levels, rather than 25OHD levels, showed seasonal oscillations; peak levels were seen from May to October and the lowest levels were seen from December to February. These findings were evident in patients with CKD stage 3 ~ 5 but not stage 1 ~ 2. eGFR was in direct proportion to both 25OHD and 1,25OHD levels (P<0.0001), but it had stronger linearity with 1,25OHD (r = 0.73) than 25OHD (r = 0.22) levels. Using multivariate analysis, 1,25OHD levels (P<0.001), but not 25OHD levels, were negatively associated with CKD stage. Although FokI polymorphisms by themselves showed no significant associations with CKD stage, a significant interaction between 1,25OHD and FokITT was observed (P = 0.008). The positive association between 1,25OHD and eGFR was steeper in FokICT and CC polymorphisms (r = 0.74) than FokITT polymorphisms (r = 0.65). CONCLUSIONS: These results suggest that higher 1,25OHD levels may be associated with better CKD stages in patients with type 2 diabetes and that this association was modified by FokI polymorphisms.


Assuntos
Desoxirribonucleases de Sítio Específico do Tipo II/genética , Diabetes Mellitus Tipo 2/genética , Diabetes Mellitus Tipo 2/fisiopatologia , Testes de Função Renal , Polimorfismo Genético , Receptores de Calcitriol/genética , Vitamina D/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Diabetes Mellitus Tipo 2/sangue , Feminino , Predisposição Genética para Doença , Taxa de Filtração Glomerular , Humanos , Falência Renal Crônica/sangue , Falência Renal Crônica/genética , Falência Renal Crônica/fisiopatologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Estações do Ano , Vitamina D/análogos & derivados , Adulto Jovem
20.
J Diabetes Investig ; 2(5): 399-405, 2011 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-24843520

RESUMO

UNLABELLED: Aims/Introduction: To evaluate the relationship between fasting plasma glucose (FPG) level and cardiovascular disease in patients with hypercholesterolemia, and to evaluate the effect of pravastatin on risk reduction in a post-hoc analysis of the large-scale Management of Elevated Cholesterol in the primary prevention Group of Adult Japanese (MEGA) Study. MATERIALS AND METHODS: A total of 7832 patients were randomized to diet alone or diet plus low-dose pravastatin (10-20 mg/day, average 8.3 mg during follow-up periods) and followed for >5 years. In this analysis, the relationship between FPG and risk of cardiovascular disease events over 5 years were studied in 6673 patients with recorded baseline FPG levels by using the multivariable Cox proportional hazards model with the restricted quadratic spline based on three knots for FPG quartiles. RESULTS: The spline curve showed an obvious sharp increased risk from a FPG of ≥100 mg/dL. The spline curve in the diet plus pravastatin group was consistently lower than in the diet group, regardless of the FPG level. CONCLUSIONS: The risk of cardiovascular disease appears to increase when FPG is ≥100 mg/dL, with a sharp increased risk found above this level in patients with hypercholesterolemia. Statin treatment seems to be beneficial to reduce cardiovascular disease risk in this population. This trial was registered with ClinicalTrials.gov (no. NCT00211705). (J Diabetes Invest, doi: 10.1111/j.2040-1124.2011.00121.x, 2011).

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