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Registros recuperados: 8
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Apoptose na infecção experimental de cães domésticos com Ehrlichia canis Ciência Rural
Sanchez,Irma Ximena Barbosa; Socarras,Teresa de Jesus Oviedo; Silva,Miguel Ladino; Pereira,Nubia Braga; Machado,Rosangela Zacarias; Vasconcelos,Anilton Cesar.
A Erliquiose canina é uma zoonose causada pela Ehrlichia canis, bactéria Gram negativa de distribuição mundial. Alguns cães com erliquiose se tornam portadores assintomáticos enquanto outros desenvolvem uma doença aguda com morte rápida. A apoptose pode ser importante na eliminação de patógenos intracelulares, podendo, nas infecções por Ehrlichia sp. e Anaplasma sp., ocorrer modulação da apoptose celular para prolongar a sobrevivência desses organismos. Para avaliação do papel da apoptose na erliquiose canina, sete cães foram distribuídos em dois grupos. No Grupo inoculado, realizou-se a infecção por via intravenosa com sangue infectado com E. canis (isolado Jaboticabal), sendo realizada a inoculação com PBS estéril nos animais pertencentes ao Grupo...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Apoptose; Ehrlichia canis; N-PCR; RIFI; TUNEL; Bcl-2; Bax.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000800021
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Calcium and cell death signaling in neurodegeneration and aging Anais da ABC (AABC)
Smaili,Soraya; Hirata,Hanako; Ureshino,Rodrigo; Monteforte,Priscila T.; Morales,Ana P.; Muler,Mari L.; Terashima,Juliana; Oseki,Karen; Rosenstock,Tatiana R.; Lopes,Guiomar S.; Bincoletto,Claudia.
Transient increase in cytosolic (Cac2+) and mitochondrial Ca2+ (Ca m2+) are essential elements in the control of many physiological processes. However, sustained increases in Ca c2+ and Ca m2+ may contribute to oxidative stress and cell death. Several events are related to the increase in Ca m2+, including regulation and activation of a number of Ca2+ dependent enzymes, such as phospholipases, proteases and nucleases. Mitochondria and endoplasmic reticulum (ER) play pivotal roles in the maintenance of intracellular Ca2+ homeostasis and regulation of cell death. Several lines of evidence have shown that, in the presence of some apoptotic stimuli, the activation of mitochondrial processes maylead to the release of cytochrome c followed by the activation of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Apoptosis; Bax; Mitochondria; Endoplasmic reticulum; Neurodegeneration and aging.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300011
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Effects of systemic administration of ciliary neurotrophic factor on Bax and Bcl-2 proteins in the lumbar spinal cord of neonatal rats after sciatic nerve transection BJMBR
Rezende,A.C.S.; Vieira,A.S.; Rogério,F.; Rezende,L.F.; Boschero,A.C.; Negro,A.; Langone,F..
Ciliary neurotrophic factor (CNTF) is a cytokine that plays a neuroprotective role in relation to axotomized motoneurons. We determined the effect of daily subcutaneous doses of CNTF (1.2 µg/g for 5 days; N = 13) or PBS (N = 13) on the levels of mRNA for Bcl-2 and Bax, as well as the expression and inter-association of Bcl-2 and Bax proteins, and the survival of motoneurons in the spinal cord lumbar enlargement of 2-day-old Wistar rats after sciatic nerve transection. Five days after transection, the effects were evaluated on histological and molecular levels using Nissl staining, immunoprecipitation, Western blot analysis, and reverse transcriptase-polymerase chain reaction. The motoneuron survival ratio, defined as the ratio between the number of...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Ciliary neurotrophic factor; Bax; Neonatal rats; Axotomy; Motoneuron; Immunoprecipitation.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008001100013
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Fludarabine induces apoptosis in chronic lymphocytic leukemia - the role of P53, Bcl-2, Bax, Mcl-1, and Bag-1 proteins BJMBR
Faria,J.R.; Yamamoto,M.; Faria,R.M.D.; Kerbauy,J.; Oliveira,J.S.R..
The expression of P53, Bcl-2, Bax, Bag-1, and Mcl-1 proteins in CD5/CD20-positive B-chronic lymphocytic leukemia (B-CLL) cells from 30 typical CLL patients was evaluated before and after 48 h of incubation with 10-6 M fludarabine using multiparametric flow cytometric analysis. Protein expression was correlated with annexin V expression, Rai modified clinical staging, lymphocyte doubling time, and previous treatment. Our main goal was to determine the predictive value of these proteins in CLL cells in terms of disease evolution. Bcl-2 expression decreased from a median fluorescence index (MFI) of 331.71 ± 42.2 to 245.81 ± 52.2 (P < 0.001) after fludarabine treatment, but there was no difference between viable cells (331.57 ± 44.6 MFI) and apoptotic cells...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chronic lymphocytic leukemia; Apoptosis; Fludarabine; P53; Bcl-2; Bax; Mcl-1; Bag-1.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000300003
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Lipopolysaccharide-induced dental pulp cell apoptosis and the expression of Bax and Bcl-2 in vitro BJMBR
Yang,H.; Zhu,Y.T.; Cheng,R.; Shao,M.Y.; Fu,Z.S.; Cheng,L.; Wang,F.M.; Hu,T..
Lipopolysaccharide exerts many effects on many cell lines, including cytokine secretion, and cell apoptosis and necrosis. We investigated the in vitro effects of lipopolysaccharide on apoptosis of cultured human dental pulp cells and the expression of Bcl-2 and Bax. Dental pulp cells showed morphologies typical of apoptosis after exposure to lipopolysaccharide. Flow cytometry showed that the rate of apoptosis of human dental pulp cells increased with increasing lipopolysaccharide concentration. Compared with controls, lipopolysaccharide promoted pulp cell apoptosis (P < 0.05) from 0.1 to 100 μg/mL but not at 0.01 μg/mL. Cell apoptosis was statistically higher after exposure to lipopolysaccharide for 3 days compared with 1 day, but no difference was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dental pulp cells; Lipopolysaccharide; Apoptosis; Bax; Bcl-2.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001100003
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Protective effect of crocetin from Crocus sativus L. on myocardial ischemia-reperfusion injury in rats Ciênc. Tecnol. Aliment.
LIU,Chengxiao; SUN,Erlian; MENG,Wenjun; SUN,Guoqing.
Abstract This study investigated the protective effect of crocetin from Crocus sativus L. on myocardial ischemia-reperfusion injury (MIRI) in rats. Sixty SD rats were randomly divided into sham-operated, model, and low-, medium- and high-dose crocetin groups. Later 3 groups were intragastrically administrated with 10, 20 and 40 mg/kg crocetin from Crocus sativus L., respectively, for 1 week. On the 8th day, the MIRI model was established in the later 4 groups. The blood biochemical indexes, hemodynamic indexes, myocardial infarct size, myocardial antioxidant indexes and myocardial expressions of B-cell lymphoma-2 (Bcl-2), Bcl-2 associated X protein (Bax), serine/threonine kinase (Akt) and phosphorylated Akt (p-Akt) protein were determined. Results showed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crocetin; Ischemia-reperfusion injury; Bcl-2; Bax; Akt.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600595
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Protective effects of fentanyl preconditioning on cardiomyocyte apoptosis induced by ischemia-reperfusion in rats BJMBR
Xu,Q.; Li,Q.-G.; Fan,G.-R.; Liu,Q.-H.; Mi,F.-L.; Liu,B..
We aimed to study the effect of fentanyl (Fen) preconditioning on cardiomyocyte apoptosis induced by ischemia-reperfusion (I/R) in rats. A total of 120 Sprague Dawley male rats (age: 3 months) were randomly divided into: sham operation group (S group), I/R group, normal saline I/R group (NS group), and fentanyl low, middle, and high dose groups (Fen1: 2 μg/kg; Fen2: 4 μg/kg; Fen3: 6 μg/kg). Heart rate (HR), mean arterial pressure (MAP), left ventricular developed pressure (LVDP), ±dp/dtmax, malondialdehyde (MDA), superoxide dismutase (SOD) activity, creatine phosphokinase-MB (CK-MB), and cardiac troponin-I (cTnI) were measured. Myocardial ischemic (MI) area, total apoptotic myocardial cells, and protein and mRNA expressions of B-cell lymphoma 2 (Bcl-2) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fentanyl; Ischemia-reperfusion; Myocardial apoptosis; Myocardial infarction; Hemodynamic parameters; B-cell lymphoma 2; Bax.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200603
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The Role and Significance of Bcl-2 and Bax in the Hepatic Carcinoma International Journal of Morphology
Hongfu,Liu; Luping,Zhang; Shaojie,Chen; Zengxian,Wang; Fei,Huang; Dong,Wang.
This study aimed to observe the regularity of liver cell apoptosis and expression of apoptosis related gene Bcl-2 and Bax in the induced cancer, and explore the relationship between apoptosis and the development of liver cancer. In this study, 84 rats were used, 72 rats as experimental group induced by drinking water containing DEN, 12 rats as control group (CG). After laparotomy, the form, color, texture of the liver and metastatic tumor in both control and experimental groups were observed and recorded. The metastatic tumor and the liver tissue were sectioned and stained with hematoxylin-eosin staining to demonstrate the characteristic in morphological changes, the Hoechst 33342 fluorescent staining was applied to show and count the rate of apoptotic...
Tipo: Journal article Palavras-chave: Primary hepatic carcinoma; Apoptosis; Bcl-2; Bax; Rats.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400032
Registros recuperados: 8
Primeira ... 1 ... Última
 

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