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Belotti EM, Amweg AN, Matiller V, Varela ML, Stassi AF, Velázquez MML, Ortega HH, Rey F, Salvetti NR. Effects of adrenocorticotrophic hormone on the expression of matrix metalloproteinases and their inhibitors in the bovine ovary. Reprod Fertil Dev 2021; 32:748-762. [PMID: 32362313 DOI: 10.1071/rd19232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 12/01/2019] [Indexed: 01/06/2023] Open
Abstract
Cattle undergo numerous environmental and management stressors that reduce fertility and affect ovulation. The extracellular matrix of the follicle wall can be altered by matrix metalloproteinases (MMPs), the activities of which are regulated by interleukins and tissue-specific inhibitors of metalloproteinases (TIMPs), especially during ovulation. The aims of the present study were to: (1) evaluate changes in the hormone milieu, the localisation and activity of MMP2 and MMP9 and the localisation of MMP14, TIMP1 and TIMP2 in response to adrenocorticotrophic hormone (ACTH) during the preovulatory period in cows; and (2) determine the direct effects of ACTH on the mRNA expression of MMP2 and MMP9 in the cultured follicle wall of bovine ovaries obtained from an abattoir. 100IU ACTH was administered during pro-oestrus every 12h until ovariectomy, which was performed before ovulation. Cortisol concentrations in the plasma and follicular fluid (FF) of preovulatory follicles were higher in ACTH-treated than control cows. Progesterone presented subluteal concentrations in plasma of ACTH-treated cows (P<0.05). MMP2 immunostaining and activity in ovaries were higher in ACTH-treated than control cows (P<0.05), whereas MMP9 immunostaining was similar between the two groups. However, unlike in control cows, MMP9 activity was absent in the FF of ACTH-treated cows. These results suggest that the administration of ACTH during the preovulatory period in cows could cause changes that culminate in modifications in the content and activation of MMPs and TIMPs in the ovary, which could interfere with the ovulation process.
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Affiliation(s)
- E M Belotti
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - A N Amweg
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - V Matiller
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - M L Varela
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - A F Stassi
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - M M L Velázquez
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - H H Ortega
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - F Rey
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina
| | - N R Salvetti
- Laboratorio de Biología Celular y Molecular Aplicada, Instituto de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral, R. P. Kreder 2805, CP3080, Esperanza, Santa Fe, Argentina; and Corresponding author.
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Adamczuk Y, Varela ML, Forastiero R, Martinuzzo M, Cerrato G, Pombo G, Carreras LO. Factor V Leiden and Prothrombin G 20210A Variant Are Risk Factors for Venous Thromboembolism in the Argentinean Population. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613845] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Mbengue B, Kpodji P, Sylla Niang M, Varela ML, Thiam A, Sow A, Ndiaye K, Aidara M, Thiam F, Ndiaye R, Diop G, Nguer CM, Perraut R, Dièye A. [Profiles of IgG responses against CSP, GLURP and LSA-3NR2 in urban malaria (Dakar): relations with haemoglobin levels and parasite densities]. Bull Soc Pathol Exot 2016; 109:91-98. [PMID: 27100862 DOI: 10.1007/s13149-016-0485-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/23/2016] [Indexed: 06/05/2023]
Abstract
Malaria remains a major health problem in sub- Saharan African countries despite substantial decreases in morbidity and mortality due to sustained control programs. Vaccines candidates were mainly tested in rural endemic setting; however increasing proportion of the population is living in urban area. Evaluation of the qualitative or quantitative immune responses to key targets of anti-Plasmodium immunity requires further investigation in urban area. In a cohort of 144 patients with mild malaria living in Dakar, we analyzed IgG responses against target antigens of P. falciparum: CSP, LSA-3NR2 and GLURP by ELISA. A mean age of 15 yrs (4-65 yrs) was found and patients were separated in 59 adults (<15yrs) and 85 children (≤15 yrs). Parasites densities (0,01-15%) did not differ between the two age groups. In contrast, haemoglobin levels appeared lower in children (4.5-16.6 g/dl) (p<0.01). For the immune results, the most recognized antigens were GLURP and CSP compared to LSA-3NR2. Levels of IgG against these antigens were significantly different between the two age groups and they were positively correlated (rho = 0.32; p<0.001). In addition, levels of IgG anti-GLURP were associated with low parasitemia (≤1%) and absence of anemia (≥11g/dl), particularly in adults (p<0.001). In a multiple regression analysis, no significant relationship was found between parasite densities and IgG responses against all the tested antigens. Our study shows the implication of IgG anti-GLURP in humoral immune response against the parasite. The present work contributes to determine IgG levels that can be used as relevant immunologic biomarkers in urban clinical malaria.
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Affiliation(s)
- B Mbengue
- Service d'immunologie FMPO, Université Cheikh Anta Diop, Dakar, Sénégal.
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal.
| | - P Kpodji
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - M Sylla Niang
- Service d'immunologie FMPO, Université Cheikh Anta Diop, Dakar, Sénégal
| | - M L Varela
- Unité d'immunologie, Institut Pasteur de Dakar, Dakar, Sénégal
| | - A Thiam
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - A Sow
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - K Ndiaye
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - M Aidara
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - F Thiam
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - R Ndiaye
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - G Diop
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
| | - C M Nguer
- Département génie chimique et biologie appliquée, ESP, Université Cheikh Anta Diop, Dakar, Sénégal
| | - R Perraut
- Unité d'immunologie, Institut Pasteur de Dakar, Dakar, Sénégal
| | - A Dièye
- Unité d'immunogénétique, Institut Pasteur de Dakar, Dakar, Sénégal
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Ferreira MF, Varela ML, Lo Nostro F, Ansaldo M, Genovese G. Reproductive aspects of Notothenia rossii and N. coriiceps (Perciformes, Nototheniidae) at Potter Cove, 25 de Mayo (King George) Island during austral summer. Polar Biol 2016. [DOI: 10.1007/s00300-016-1918-x] [Citation(s) in RCA: 3] [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: 10/22/2022]
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Genovese G, Regueira M, Da Cuña RH, Ferreira MF, Varela ML, Lo Nostro FL. Nonmonotonic response of vitellogenin and estrogen receptor α gene expression after octylphenol exposure of Cichlasoma dimerus (Perciformes, Cichlidae). Aquat Toxicol 2014; 156:30-40. [PMID: 25146234 DOI: 10.1016/j.aquatox.2014.07.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/20/2014] [Accepted: 07/24/2014] [Indexed: 06/03/2023]
Abstract
In oviparous vertebrates, vitellogenin (VTG) is mainly produced by the liver in response to estrogen (E2) and its synthesis is traditionally coupled to estrogen receptor alpha induction. Even though VTG is a female-specific protein, chemicals that mimic natural estrogens, known as xenoestrogens, can activate its expression in males causing endocrine disruption to wildlife and humans. Alkylphenols such as nonylphenol (NP) and octylphenol (OP) are industrial additives used in the manufacture of a wide variety of plastics and detergents, and can disrupt endocrine functions in exposed animals. For more than a decade, the freshwater cichlid fish Cichlasoma dimerus has been used for ecotoxicological studies in our laboratory. We recently found an up-regulation of VTG gene expression in livers of male fish exposed to OP, from a silent state to values similar to those of E2-induced fish. To better understand the underlying mechanisms behind the action of xenoestrogens, the aim of this study was to analyze the dose-response relationship of C. dimerus VTG and estrogen receptors (ERs) gene expression after waterborne exposure to 0.15, 1.5, 15, and 150μg/L OP for up to 1 month (0, 1, 3, 7, 14, 21, and 28 days). At the end of the experiment, histological features of exposed fish included active hepatocytes with basophilic cytoplasm and high eosinophilic content in their vascular system due to augmented expression of VTG. In testis, high preponderance of sperm was found in fish exposed to 150μg/L OP. A classic dose-response down-regulation of the expression of Na(+)/K(+)-ATPase, a "non-gender specific gene" used for comparison, was found with increasing OP concentrations. No VTG and very low levels of ERα were detected in control male livers, but an up-regulation of both genes was found in males exposed to 0.15 or 150μg/L OP. Moreover, VTG transcripts were significant as early as day 3 or day 1 of exposure to these OP concentrations, respectively. Nearly no response was detected in 1.5 and 15μg/L OP exposed-fish. Data was curve-fitted evidencing a nonmonotonic dose-response curve. Interestingly, ERβ2 mRNA expression was augmented above baseline levels only when males were exposed to the lowest OP concentration. We speculate that genomic control of vitellogenesis is under control of multiple steroid receptors with different affinities for ligands. ERβ isoform, only up-regulated with very low concentrations of ligand, would act as a sensors of OP (or E2) to induce ERα and VTG. With high OP concentrations, the expression of ERα isoform is promptly augmented, with the concomitant VTG transactivation.
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Affiliation(s)
- G Genovese
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA, Argentina; IBBEA, CONICET-UBA, Argentina.
| | - M Regueira
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA, Argentina
| | - R H Da Cuña
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA, Argentina; IBBEA, CONICET-UBA, Argentina
| | - M F Ferreira
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA, Argentina
| | - M L Varela
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA, Argentina
| | - F L Lo Nostro
- Laboratorio de Ecotoxicología Acuática, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA, Argentina; IBBEA, CONICET-UBA, Argentina
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Varela ML, Adamczuk YP, Forastiero RR, Martinuzzo ME, Cerrato GS, Pombo G, Carreras LO. Major and potential prothrombotic genotypes in a cohort of patients with venous thromboembolism. Thromb Res 2001; 104:317-24. [PMID: 11738073 DOI: 10.1016/s0049-3848(01)00384-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 11/15/2022]
Abstract
Factor V Leiden (FVL) and the prothrombin 20210A (PT-20210A) variant are well-known risk factors for venous thromboembolism (VT). The thermolabile variant (TT) of the methylenetetrahydrofolate reductase (MTHFR) gene, and homozygosity for the 4G allele of the promoter region of the plasminogen activator inhibitor-1 (PAI-1) are potential genetic polymorphisms that have not been consistently associated with increased risk of VT. A case-control study was performed on 192 consecutive unrelated patients referred for evaluation of thrombophilia because of VT and 200 healthy controls. FVL was found in 10.4% of patients compared to 3.0% of controls, while 6.3% of patients were carriers of the PT-20210A allele compared to 2.0% of controls. The adjusted odds ratios (OR) were 5.92 and 4.03 for FVL (P=.001) and the PT-20210A (P=.033), respectively. The prevalence of homozygotes for MTHFR (TT) and PAI-1 (4G/4G) among patients and controls were 13.7% versus 13.0% and 21.6% versus 23.5%, respectively (P=ns). A total of 121 patients underwent a complete screening for FVL, the PT-20210A, protein C (PC), protein S (PS), antithrombin III (ATIII), levels of factor VIII, and antiphospholipid antibodies (aPL). In 59 patients (48.8%) at least one defect was found, being a single defect in 55 and combined defects in 4 patients. Plasma levels of homocysteine (Hcy) were measured in 138 patients and 144 controls. Subjects from both groups carrying the MTHFR-TT variant had higher Hcy levels than those with the normal genotype. Hyperhomocysteinemia (HHcy) by itself is a risk factor for VT (OR 4.92, P<.0001). We conclude that FVL and the PT-20210A are risk factors for VT as well as Hcy levels, but the MTHFR and PAI-1 polymorphisms do not appear to be associated with VT in our country.
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Affiliation(s)
- M L Varela
- Department of Haematology, Thrombosis and Haemostasis, Favaloro University, Buenos Aires, Argentina
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Forastiero R, Martinuzzo M, Adamczuk Y, Varela ML, Pombo G, Carreras LO. The combination of thrombophilic genotypes is associated with definite antiphospholipid syndrome. Haematologica 2001; 86:735-41. [PMID: 11454529] [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: 02/20/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Thrombosis and pregnancy morbidity are clinical features of the definite antiphospholipid syndrome (APS). These clinical complications are also associated with the presence of inherited thrombophilias. Interactions between acquired and genetic risk factors are becoming increasingly related to a higher thrombotic risk. The aim of our study was to determine the prevalence of four common gene polymorphisms in patients with antiphospholipid antibodies (aPL). DESIGN AND METHODS A series of 105 consecutive unselected patients with aPL grouped as having APS (n= 69) and not having APS (n= 36) was studied. A control group of 200 healthy subjects was also investigated for the presence of factor V Leiden (FVL), the 20210A allele of the prothrombin (PT-20210A) gene, the thermolabile variant (677TT) of methylenetetrahydrofolate reductase (MTHFR), and the 4G/4G genotype of the plasminogen activator inhibitor (PAI-1) promoter. RESULTS Two patients who belong to the APS group carried the FVL while PT-20210A was found in 6 patients with APS (8.7%) and in 1 of the non-APS group (2.8%). The prevalence of FVL was similar to that found in the control group whereas PT-20210A was significantly more frequent in APS patients than in normal controls (2.0%, p=0.02). The MTHFR-677TT was found in 22.0%, 15.1% and 13.0%, and the PAI-1 (4G/4G) in 27.5%, 22.8% and 23.5% of APS, non-APS patients and normal controls, respectively. Furthermore, combinations of PT-20210A or FVL with PAI-1 (4G/4G) were significantly more frequent in APS patients (5.8%) than in normal controls (0.5%, p=0.016). This difference was not found between non-APS patients and normal subjects. INTERPRETATION AND CONCLUSIONS Present data indicate that testing for heritable thrombophilia would be important to identify aPL subjects with an increased risk of developing APS.
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Affiliation(s)
- R Forastiero
- Department of Haematology, Thrombosis and Haemostasis, Favaloro University, Buenos Aires, Argentina
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Varela ML, Adamczuk YP, Martinuzzo ME, Forastiero RR, Klein FR, Rossi AS, Carreras LO. Early occlusion of coronary by-pass associated with the presence of factor V Leiden and the prothrombin 20210A allele: case report. Blood Coagul Fibrinolysis 1999; 10:443-6. [PMID: 10695772 DOI: 10.1097/00001721-199910000-00008] [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: 11/25/2022]
Abstract
The presence of factor V Leiden mutation and the variation of the prothrombin gene 20210GA have been described as additional risk factors for arterial thrombosis when other acquired or metabolic risk factors are present. We report here a 56-year-old man who developed coronary artery disease since 1980 without any known risk factor and underwent a cardiopulmonary by-pass in 1997. In the first month after surgery, he became symptomatic, and an angiography showed complete occlusion of the grafts and some native coronary arteries. Three months after the second cardiopulmonary by-pass, a thrombophilic state was searched, and plasma levels of lipoprotein (a) (LPa) were measured. The patient is heterozygous for factor V Leiden mutation and has the variation 20210GA of the prothrombin gene and high levels of LPa. These findings induced us to add oral anticoagulation to the aspirin treatment, and the patient is in a good condition 11 months later.
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Affiliation(s)
- M L Varela
- Favaloro University, Institute of Cardiology and Cardiovascular Surgery, Division of Hematology, Buenos Aires, Argentina
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Kunstmann S, Corbalán R, Rodríguez JA, Casanegra P, Varela ML. [Characteristics of acute myocardial infarction in patients with diabetes mellitus]. Rev Med Chil 1993; 121:645-51. [PMID: 8278700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We analyzed retrospectively the clinical course and prognosis of 565 consecutive patients with acute myocardial infarction (AMI), 117 of them with a previous history of diabetes mellitus. Male/female ration was 7.9/2.1 in non diabetics and 7.0/3.0 in diabetics (p < 0.03). Incidence of hypertension and hyperlipidemia was higher in diabetic patients as well as history of congestive heart failure (13.7% vs 6.5 in non diabetics p < 0.01). The type and location of AMI did not differ among groups, however the incidence of congestive heart failure Killip class III-IV was higher in diabetic patients (31.6 vs 21.2%). Peak CPK values were lower in diabetics (1.270 +/- 1.179 vs 1.648 +/- 1.377 U/l p < 0.01). Cardiac mortality was higher one month and one year after AMI in diabetics (17.1 vs 13.6% and 21.4 vs 17.8% respectively, p < 0.01). Univeriate and multivariate analysis identified new bundle branch block, heart failure and advanced age as independent predictors of mortality in both groups of patients. It is concluded that the worst prognosis of diabetic patients with AMI may be related to a previously depressed ventricular function and that appropriate metabolic control and treatment of associated risk factors, could improve the prognosis of diabetics patients with AMI.
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Affiliation(s)
- S Kunstmann
- Departamento de Enfermedades Cardiovasculares, Hospital Clínico, Pontificia Universidad Católica, Santiago de Chile
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