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Maria Fernanda Martinez

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Papers by Maria Fernanda Martinez

Research paper thumbnail of Genetics of Alzheimer's disease

Essays in Biochemistry, Feb 1, 1998

Research paper thumbnail of Some observations on the cytology in Ochna sp (Ochnaceae)

Research paper thumbnail of Teaching methodology for the utilization of cinema in the teaching of medical microbiology and infectious diseases

Summary Cinema, since it's beginning, has been an... more Summary Cinema, since it's beginning, has been and is a social thermometer of the first magnitude reflecting the inequities of the population, among them are infectious diseases. The caudal of images, sounds, and feelings that appear in the field support a very valid teaching resource, capable of complementing the classic teaching method and adapting the dynamic art of teaching to

Research paper thumbnail of Stimulation of Microsomal Cholesterol Ester Hydrolase by Glucagon, Cyclic AMP Analogues, and Vasopressin in Isolated Rat Hepatocytes

Lipids, 1996

Short-term activation of microsomal cholesterol ester hydrolase by glucagon, cAMP analogues, and ... more Short-term activation of microsomal cholesterol ester hydrolase by glucagon, cAMP analogues, and vasopressin in isolated rat hepatocytes is described. Glucagon led to a dose- and time-dependent activation of cholesteryl oleate hydrolysis, but values returned to basal levels within 120 min. Exposure of isolated hepatocytes to 0.5 mM concentrations of dibutyryl-cAMP or 8-[4-chlorophenylthio]-cAMP, or 25 microM forskolin caused persistent activation of cholesterol ester hydrolase activity after a lag period of 30 min. The three agents resulted in early marked intracellular accumulation of cAMP that declined progressively, and moderate and sustained reductions in the diacylglycerol content. The actions of glucagon on hepatocytes were inhibited by pretreatment of cells with 10 nM [8-arginine] vasopressin. Vasopressin elicited a consistent and sustained increase in cholesterol ester hydrolase activity and diacylglycerol without affecting cAMP while reducing the effect of glucagon on cAMP. Furthermore, the effects of glucagon and vasopressin on the activation of cholesterol ester hydrolase were not additive despite the similarity of their stimulation of diacylglycerol formation. Blockade of vasopressin-mediated activation of cholesterol ester hydrolase and diacylglycerol content were induced by excess prazosin. These data suggest that stimulation of microsomal cholesterol ester hydrolase in isolated liver cells may involve at least two signal transduction systems.

Research paper thumbnail of Red meat and poultry intake, polymorphisms in the nucleotide excision repair and mismatch repair pathways and colorectal cancer risk

Carcinogenesis, Mar 1, 2009

Research paper thumbnail of Identification and synthesis regulation of the main exopolysaccharide compound of the biofilm matrix of Salmonella enterica

Research paper thumbnail of Fiber, sex, and colorectal adenoma: results of a pooled analysis

The American Journal of Clinical Nutrition, Feb 1, 2006

Research paper thumbnail of Smoking exposure as a risk factor for prevalent and recurrent colorectal adenomas

Cancer Epidemiology Biomarkers Prevention, Oct 1, 2003

Research paper thumbnail of Cefalea numular:: características clínicas y experiencia terapéutica en una serie de 30 nuevos casos

Revista De Neurologia, 2011

Research paper thumbnail of Immobilization of pycnoporus coccineus laccase on Eupergit C: Stabilization and treatment of olive oil mill wastewaters

Biocatalysis and Biotransformation, 2007

... Jimmy Berrio 1 , Francisco J. Plou 2 , Antonio Ballesteros 2 ... Aggelis G, Iconomou D, Chris... more ... Jimmy Berrio 1 , Francisco J. Plou 2 , Antonio Ballesteros 2 ... Aggelis G, Iconomou D, Christou M, Bokas D, Kotzailias S, Christou G, Tsagou V, Papanikolaou S. Phenolic removal in a model olive oil mill wastewater using Pleurotus ostreatus in bioreactor cultures and biological ...

Research paper thumbnail of Fatores associados � capacidade para o trabalho de trabalhadores do Setor El�trico

Research paper thumbnail of M�thodes statistiques pour identifier les g�nes dans les maladies multifactorielles

Research paper thumbnail of The Fruit Export Sector in Lebanon. The Challenge of Conforming to Sanitary and Phytosanitary Measures

Research paper thumbnail of Association between Cyclooxygenase Expression and Colorectal Adenoma Characteristics1

Cancer Research, Jul 1, 2003

Research paper thumbnail of Psicothema 2007 Eva MCDI

Research paper thumbnail of Invited Commentary: Factor Analysis and the Search for Objectivity

Research paper thumbnail of Calcium, vitamin D, and risk of adenoma recurrence (United States)

Cancer Causes and Control, May 1, 2002

Research paper thumbnail of As relações entre a satisfação com aspectos psicossociais no trabalho e a saúde do trabalhador

Research paper thumbnail of Gestaci�n heterot�pica espont�nea. Diagn�stico ecogr�fico y tratamiento laparosc�pico

Research paper thumbnail of Folate and colorectal neoplasia: relation between plasma and dietary markers of folate and adenoma recurrence

The American Journal of Clinical Nutrition, Apr 1, 2004

Research paper thumbnail of Genetics of Alzheimer's disease

Essays in Biochemistry, Feb 1, 1998

Research paper thumbnail of Some observations on the cytology in Ochna sp (Ochnaceae)

Research paper thumbnail of Teaching methodology for the utilization of cinema in the teaching of medical microbiology and infectious diseases

Summary Cinema, since it's beginning, has been an... more Summary Cinema, since it's beginning, has been and is a social thermometer of the first magnitude reflecting the inequities of the population, among them are infectious diseases. The caudal of images, sounds, and feelings that appear in the field support a very valid teaching resource, capable of complementing the classic teaching method and adapting the dynamic art of teaching to

Research paper thumbnail of Stimulation of Microsomal Cholesterol Ester Hydrolase by Glucagon, Cyclic AMP Analogues, and Vasopressin in Isolated Rat Hepatocytes

Lipids, 1996

Short-term activation of microsomal cholesterol ester hydrolase by glucagon, cAMP analogues, and ... more Short-term activation of microsomal cholesterol ester hydrolase by glucagon, cAMP analogues, and vasopressin in isolated rat hepatocytes is described. Glucagon led to a dose- and time-dependent activation of cholesteryl oleate hydrolysis, but values returned to basal levels within 120 min. Exposure of isolated hepatocytes to 0.5 mM concentrations of dibutyryl-cAMP or 8-[4-chlorophenylthio]-cAMP, or 25 microM forskolin caused persistent activation of cholesterol ester hydrolase activity after a lag period of 30 min. The three agents resulted in early marked intracellular accumulation of cAMP that declined progressively, and moderate and sustained reductions in the diacylglycerol content. The actions of glucagon on hepatocytes were inhibited by pretreatment of cells with 10 nM [8-arginine] vasopressin. Vasopressin elicited a consistent and sustained increase in cholesterol ester hydrolase activity and diacylglycerol without affecting cAMP while reducing the effect of glucagon on cAMP. Furthermore, the effects of glucagon and vasopressin on the activation of cholesterol ester hydrolase were not additive despite the similarity of their stimulation of diacylglycerol formation. Blockade of vasopressin-mediated activation of cholesterol ester hydrolase and diacylglycerol content were induced by excess prazosin. These data suggest that stimulation of microsomal cholesterol ester hydrolase in isolated liver cells may involve at least two signal transduction systems.

Research paper thumbnail of Red meat and poultry intake, polymorphisms in the nucleotide excision repair and mismatch repair pathways and colorectal cancer risk

Carcinogenesis, Mar 1, 2009

Research paper thumbnail of Identification and synthesis regulation of the main exopolysaccharide compound of the biofilm matrix of Salmonella enterica

Research paper thumbnail of Fiber, sex, and colorectal adenoma: results of a pooled analysis

The American Journal of Clinical Nutrition, Feb 1, 2006

Research paper thumbnail of Smoking exposure as a risk factor for prevalent and recurrent colorectal adenomas

Cancer Epidemiology Biomarkers Prevention, Oct 1, 2003

Research paper thumbnail of Cefalea numular:: características clínicas y experiencia terapéutica en una serie de 30 nuevos casos

Revista De Neurologia, 2011

Research paper thumbnail of Immobilization of pycnoporus coccineus laccase on Eupergit C: Stabilization and treatment of olive oil mill wastewaters

Biocatalysis and Biotransformation, 2007

... Jimmy Berrio 1 , Francisco J. Plou 2 , Antonio Ballesteros 2 ... Aggelis G, Iconomou D, Chris... more ... Jimmy Berrio 1 , Francisco J. Plou 2 , Antonio Ballesteros 2 ... Aggelis G, Iconomou D, Christou M, Bokas D, Kotzailias S, Christou G, Tsagou V, Papanikolaou S. Phenolic removal in a model olive oil mill wastewater using Pleurotus ostreatus in bioreactor cultures and biological ...

Research paper thumbnail of Fatores associados � capacidade para o trabalho de trabalhadores do Setor El�trico

Research paper thumbnail of M�thodes statistiques pour identifier les g�nes dans les maladies multifactorielles

Research paper thumbnail of The Fruit Export Sector in Lebanon. The Challenge of Conforming to Sanitary and Phytosanitary Measures

Research paper thumbnail of Association between Cyclooxygenase Expression and Colorectal Adenoma Characteristics1

Cancer Research, Jul 1, 2003

Research paper thumbnail of Psicothema 2007 Eva MCDI

Research paper thumbnail of Invited Commentary: Factor Analysis and the Search for Objectivity

Research paper thumbnail of Calcium, vitamin D, and risk of adenoma recurrence (United States)

Cancer Causes and Control, May 1, 2002

Research paper thumbnail of As relações entre a satisfação com aspectos psicossociais no trabalho e a saúde do trabalhador

Research paper thumbnail of Gestaci�n heterot�pica espont�nea. Diagn�stico ecogr�fico y tratamiento laparosc�pico

Research paper thumbnail of Folate and colorectal neoplasia: relation between plasma and dietary markers of folate and adenoma recurrence

The American Journal of Clinical Nutrition, Apr 1, 2004

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