Vicente Dressino | Universidad Nacional de La Plata (original) (raw)
Papers by Vicente Dressino
IX Encuentro AFHIC / XXV Jornadas Epistemología e Historia de las Ciencias, Jul 30, 2014
PubMed, 1999
Ten male Saimiri sciureus boliviensis (Cebidae) born at the Centro Argentino de Primates (CAPRIM)... more Ten male Saimiri sciureus boliviensis (Cebidae) born at the Centro Argentino de Primates (CAPRIM) were divided into a control group (five animals fed ad libitum on a 20% protein diet) and an undernourished group (five animals fed ad libitum on a 5% protein diet) at weaning (seven months old). Each animal was radiographed monthly from both later-lateral and dorsal-ventral views, from the first to the third year of age. The length, width and height of the optic, respiratory, and masticatory components of the face and anterior neural, middle neural, and posterior neural components were measured in the radiographs. Volumetric (VI) and morphometric (MI) indices were calculated for each component. Correlations and simple linear regressions with respect to age were performed. In the face, two components -respiratory and masticatory- showed the greatest growth rate. In the neurocranium, the middle neural component grew most, approaching the rate observed for the component of the lowest growth in the face (optic). The anterior neural and posterior neural components showed the lowest -although significant- growth rates of the skull. The determination coefficients showed that linearity explained from 12% (posterior neural component) to 74% (masticatory component) of the variation, the remainder being attributed to shape changes and noise effects. The neurofacial rate showed a high level (80%) of nonlinearity since the neurocranium grew almost 1/3 with respect to the face. The morphometric indices showed that only the masticatory component was linear to the face. While the respiratory component grew more, the optic one grew less than the whole face. Only the anterior neural component kept linearity with the neurocranium. While the middle neural component grew more, the posterior neural one grew less than the whole neurocranium. Significant alterations due to undernutrition were seen in both major components. While the three facial and the anterior neural components showed correlation coefficients lower -but significant- than in controls, in the remaining indices -morphometrics included- the correlation values were abruptly broken. The slopes of the regressions which remained significant showed that undernutrition affected mainly the components with greater growth rates (respiratory, masticatory, and middle neural). Secondarily affected were those with lower growth rates (optic, anterior neural and posterior neural), despite their function and according to the histology of the organs they support and protect.
American Journal of Physical Anthropology, Apr 1, 1990
Twenty weanling 6-month-old male squirrel monkeys were allotted to the following treatments: 1) f... more Twenty weanling 6-month-old male squirrel monkeys were allotted to the following treatments: 1) first control animals were killed at weaning; 2) second control animals were killed when 24 months old; and 3) malnourished animals were fed on a low-protein diet and killed at age 24 months. Lateral and vertical teleradiographies were taken. Growth of the neurocranial and splanchnocranial components were measured by volumetric (size estimators) and morphometric (shape estimators) indices. All facial components grew. The neurocranial components showed a heterogeneous behavior: The anteroneural component remained stable, and the increase of the midneural component was compensated by a decrease in the posteroneural component. Malnutrition affected the growths of 1) the craniofacial complex, 2) the splanchnocranium, and 3) the respiratory and midneural components. Growth influenced skull shape through 1) increases of the splanchnocranium and the midneural component relative to the neurocranium; 2) decreases ofthe masticatory and optic components relative to the splanchnocranium, and 3) decreases of the anteroneural and posteroneural components relative to the neurocranium. Malnutrition influenced skull shape through the relationship between the anteroneural component and the neurocranium. These results confirmed the existence of functional interrelationships among the cranial components. A new approach to craniological studies is suggested.
American Journal of Physical Anthropology, Oct 1, 1996
Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to ... more Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to one of the following groups: weanling control (C6) sampled at 6 months of age; young control (C24) fed ad libitum on a control diet and killed at 24 months of age; and malnourished ...
American Journal of Physical Anthropology, Apr 1, 1997
Ten male Saimiri sciureus boliviensis (Cebidae), born at the Centro Argentino de Primates (CAPRIM... more Ten male Saimiri sciureus boliviensis (Cebidae), born at the Centro Argentino de Primates (CAPRIM), were grown in captivity. At weaning (6 months old), five individuals were fed ad libitum on a 20% protein diet (controls). The other five animals were fed ad libitum on a 5% protein diet (malnourished). Animals were radiographed monthly. The length, width, and height of the anterior, middle, and posterior components of the neurocranium, and those of the masticatory, respiratory, and optic components of the face were measured. A pattern of high growth rate was observed in both the three facial and the middle neural components. The anterior and posterior neural components showed a pattern of low rate of growth. The growth behavior of each variable was also different. Lengths grew more than widths and heights in the facial components, whereas widths grew more than heights and lengths in the neurocranium. Malnutrition delayed growth in size and altered the normal shape changes. High-patterned variables, such as masticatory and respiratory lengths, and the anterior and middle neural widths were particularly affected. The masticatory and the middle neural components underwent the greatest growth arrest. The optic and the respiratory components suffered a mild effect. The anterior and the posterior neural components were affected to a lesser degree.
Zenodo (CERN European Organization for Nuclear Research), Dec 1, 2008
Desde la formulación por Waddington del término epigenética este campo disciplinar ha manifestado... more Desde la formulación por Waddington del término epigenética este campo disciplinar ha manifestado un desarrollo lento pero sostenido. Sin embargo, en los últimos veinte años se produjo, debido al progreso tecnológico y conceptual experimentado por la biología, un gran crecimiento que está cambiando muchos conceptos en diversos campos de la biomedicina y de la biología evolutiva. La herencia epigenética describe la transmisión de la información sobre la base de la expresión genética, a diferencia de la herencia genética que se basa en la información codificada en el ADN. Los mecanismos epigenéticos incluyen metilación del ADN, modificación de histonas, acetilación, etc. y pueden actuar en el "encendido" o "apagado" de ciertos genes modificando así la expresión de éstos. Estos mecanismos son heredables pero su alcance no perdura más allá de cierto número de generaciones dependiendo de la especie. Una característica interesante de estos mecanismos es que permiten co...
Theor Biol Forum, 2013
Modularity in biological systems is a central theme in current research. However, there are some ... more Modularity in biological systems is a central theme in current research. However, there are some problems related to the vague definitions of the concept of a module that impede both its empirical application and the comparison of data from different studies. In this article, we propose to characterize this concept which is consistent with the diverse ways in which it is conceptualized in the specialist literature. We test our characterization by analyzing the case study of the craniofacial complex. We conclude that the proposed delimitation allows a better understanding of modules since it differentiates between the concept of the module as a state (morphofunctional modules) and as a process (a product of ontogenetic or phylogenetic history).
CERN European Organization for Nuclear Research - Zenodo, Jun 1, 1998
La teoría de los sistemas de desarrollo (TSD) pretende realizar una síntesis conceptual que vincu... more La teoría de los sistemas de desarrollo (TSD) pretende realizar una síntesis conceptual que vincule el desarrollo ontogenético con la evolución. Sus antecedentes pueden ser encontrados básicamente en los trabajos de Waddington y de Bertalanffy quienes aportaron las bases de la canalización del desarrollo y la teoría de sistemas biológicos, respectivamente. El objetivo de este artículo es realizar un análisis conceptual preliminar de la TSD y reflexionar acerca de los aportes potenciales de la TSD como marco teórico para la biología del desarrollo en particular y la biología evolutiva en general. Para ello, se tendrán en cuenta algunos de los conceptos y propuestas que componen este marco y se trabajará sobre datos secundarios obtenidos de la bibliografía. Se concluye que la TSD: 1-logra argumentar en contra de la visión gen-centrista respecto de las explicaciones que pretenden justificar el desarrollo biológico y evolutivo; 2- argumenta de manera coherente a favor del rol de la epig...
Clinical and experimental obstetrics & gynecology, 2002
The aims of this work were to analyse body and brain growth as produced by deficiencies in the ut... more The aims of this work were to analyse body and brain growth as produced by deficiencies in the uteroplacental blood supply, and to evaluate sexual responses to intrauterine stress. Intrauterine growth retardation (IUGR) was experimentally induced in pregnant rats by partial obstruction in both uterine vessels at 1,7 and 14 gestational days. The dysfunctions in the placental circulation retarded both somatic and cerebral growth, depending on the period of gestational stress and the sex. Brain weight had a relatively greater resistance than body weight, which is called a "brain sparing" mechanism. The body and brain sexual dimorphism in control pups was inhibited in IUGR pups. This study shows that prenatal stress exposition might modify growth and sexual dimorphism at birth.
Revista Argentina de Antropología Biológica, 2010
RESUMEN: Diez machos Saimiri sciureus (CEBIDAE), nacidos en el Centro Argentino de Primates (CAPR... more RESUMEN: Diez machos Saimiri sciureus (CEBIDAE), nacidos en el Centro Argentino de Primates (CAPRIM), fueron divididos a partir del destete (6 meses de edad), en un grupo de cinco controles, alimentados ad libitum con dieta semisintética con 20% de proteínas y otro de cinco malnutridos, alimentados ad libitum con dieta semisintética con 5% de proteínas. El experimento fue dividido en tres períodos en los que fueron tomadas radiografías en norma lateral y superior: cada 15 días (período l), cada 30 días (período II) y cada 60 días (período III). El estudio finalizó a los 30 meses de edad postnatal. Sobre cada radiografía fueron tomadas longitud (L), ancho (A) y altura (H) y fueron calculados índices volumétricos y morfométricos para los componentes masticatorio, respiratorio y óptico y neurales anterior, medio y posterior. Los componentes faciales crecieron más que los neurocraneanos. Tuvieron un crecimiento diferencial en orden decreciente: masticatorio, respiratorio y óptico. Esta ...
Theoretical biology forum, 2013
Modularity in biological systems is a central theme in current research. However, there are some ... more Modularity in biological systems is a central theme in current research. However, there are some problems related to the vague definitions of the concept of a module that impede both its empirical application and the comparison of data from different studies. In this article, we propose to characterize this concept which is consistent with the diverse ways in which it is conceptualized in the specialist literature. We test our characterization by analyzing the case study of the craniofacial complex. We conclude that the proposed delimitation allows a better understanding of modules since it differentiates between the concept of the module as a state (morphofunctional modules) and as a process (a product of ontogenetic or phylogenetic history).
Episteme, 1998
RESUMEN En este trabajo se analizan conceptos pertenecientes a la biología evolutiva como los de ... more RESUMEN En este trabajo se analizan conceptos pertenecientes a la biología evolutiva como los de adaptación, selección natural y la relación entre ambos. También se discute la posición defendida por el determinismo genético en evolución, sostenido por la sociobiología y la ...
dialnet.unirioja.es
Acceso de usuarios registrados. Acceso de usuarios registrados Usuario Contraseña. ...
Episteme, 1998
Page 1. 7 3 ¿ES POSIBLE UNA PROPUESTA LAKATOSIANA PARA EL ESTUDIO DEL COMPONENTE FACIAL EN MAMIFE... more Page 1. 7 3 ¿ES POSIBLE UNA PROPUESTA LAKATOSIANA PARA EL ESTUDIO DEL COMPONENTE FACIAL EN MAMIFEROS? Vicente Dressino(1), Guillermo M. Denegri(2) e Susana G. Lamas (3).1 Episteme, Porto Alegre, v. 3, n. 5, p. 73-87, 1998. ...
Ciências da vida: Estudos filosóficos e históricos. …, 2006
American Journal of Physical Anthropology, 1996
Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to ... more Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to one of the following groups: weanling control (C6) sampled at 6 months of age; young control (C24) fed ad libitum on a control diet and killed at 24 months of age; and malnourished ...
IX Encuentro AFHIC / XXV Jornadas Epistemología e Historia de las Ciencias, Jul 30, 2014
PubMed, 1999
Ten male Saimiri sciureus boliviensis (Cebidae) born at the Centro Argentino de Primates (CAPRIM)... more Ten male Saimiri sciureus boliviensis (Cebidae) born at the Centro Argentino de Primates (CAPRIM) were divided into a control group (five animals fed ad libitum on a 20% protein diet) and an undernourished group (five animals fed ad libitum on a 5% protein diet) at weaning (seven months old). Each animal was radiographed monthly from both later-lateral and dorsal-ventral views, from the first to the third year of age. The length, width and height of the optic, respiratory, and masticatory components of the face and anterior neural, middle neural, and posterior neural components were measured in the radiographs. Volumetric (VI) and morphometric (MI) indices were calculated for each component. Correlations and simple linear regressions with respect to age were performed. In the face, two components -respiratory and masticatory- showed the greatest growth rate. In the neurocranium, the middle neural component grew most, approaching the rate observed for the component of the lowest growth in the face (optic). The anterior neural and posterior neural components showed the lowest -although significant- growth rates of the skull. The determination coefficients showed that linearity explained from 12% (posterior neural component) to 74% (masticatory component) of the variation, the remainder being attributed to shape changes and noise effects. The neurofacial rate showed a high level (80%) of nonlinearity since the neurocranium grew almost 1/3 with respect to the face. The morphometric indices showed that only the masticatory component was linear to the face. While the respiratory component grew more, the optic one grew less than the whole face. Only the anterior neural component kept linearity with the neurocranium. While the middle neural component grew more, the posterior neural one grew less than the whole neurocranium. Significant alterations due to undernutrition were seen in both major components. While the three facial and the anterior neural components showed correlation coefficients lower -but significant- than in controls, in the remaining indices -morphometrics included- the correlation values were abruptly broken. The slopes of the regressions which remained significant showed that undernutrition affected mainly the components with greater growth rates (respiratory, masticatory, and middle neural). Secondarily affected were those with lower growth rates (optic, anterior neural and posterior neural), despite their function and according to the histology of the organs they support and protect.
American Journal of Physical Anthropology, Apr 1, 1990
Twenty weanling 6-month-old male squirrel monkeys were allotted to the following treatments: 1) f... more Twenty weanling 6-month-old male squirrel monkeys were allotted to the following treatments: 1) first control animals were killed at weaning; 2) second control animals were killed when 24 months old; and 3) malnourished animals were fed on a low-protein diet and killed at age 24 months. Lateral and vertical teleradiographies were taken. Growth of the neurocranial and splanchnocranial components were measured by volumetric (size estimators) and morphometric (shape estimators) indices. All facial components grew. The neurocranial components showed a heterogeneous behavior: The anteroneural component remained stable, and the increase of the midneural component was compensated by a decrease in the posteroneural component. Malnutrition affected the growths of 1) the craniofacial complex, 2) the splanchnocranium, and 3) the respiratory and midneural components. Growth influenced skull shape through 1) increases of the splanchnocranium and the midneural component relative to the neurocranium; 2) decreases ofthe masticatory and optic components relative to the splanchnocranium, and 3) decreases of the anteroneural and posteroneural components relative to the neurocranium. Malnutrition influenced skull shape through the relationship between the anteroneural component and the neurocranium. These results confirmed the existence of functional interrelationships among the cranial components. A new approach to craniological studies is suggested.
American Journal of Physical Anthropology, Oct 1, 1996
Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to ... more Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to one of the following groups: weanling control (C6) sampled at 6 months of age; young control (C24) fed ad libitum on a control diet and killed at 24 months of age; and malnourished ...
American Journal of Physical Anthropology, Apr 1, 1997
Ten male Saimiri sciureus boliviensis (Cebidae), born at the Centro Argentino de Primates (CAPRIM... more Ten male Saimiri sciureus boliviensis (Cebidae), born at the Centro Argentino de Primates (CAPRIM), were grown in captivity. At weaning (6 months old), five individuals were fed ad libitum on a 20% protein diet (controls). The other five animals were fed ad libitum on a 5% protein diet (malnourished). Animals were radiographed monthly. The length, width, and height of the anterior, middle, and posterior components of the neurocranium, and those of the masticatory, respiratory, and optic components of the face were measured. A pattern of high growth rate was observed in both the three facial and the middle neural components. The anterior and posterior neural components showed a pattern of low rate of growth. The growth behavior of each variable was also different. Lengths grew more than widths and heights in the facial components, whereas widths grew more than heights and lengths in the neurocranium. Malnutrition delayed growth in size and altered the normal shape changes. High-patterned variables, such as masticatory and respiratory lengths, and the anterior and middle neural widths were particularly affected. The masticatory and the middle neural components underwent the greatest growth arrest. The optic and the respiratory components suffered a mild effect. The anterior and the posterior neural components were affected to a lesser degree.
Zenodo (CERN European Organization for Nuclear Research), Dec 1, 2008
Desde la formulación por Waddington del término epigenética este campo disciplinar ha manifestado... more Desde la formulación por Waddington del término epigenética este campo disciplinar ha manifestado un desarrollo lento pero sostenido. Sin embargo, en los últimos veinte años se produjo, debido al progreso tecnológico y conceptual experimentado por la biología, un gran crecimiento que está cambiando muchos conceptos en diversos campos de la biomedicina y de la biología evolutiva. La herencia epigenética describe la transmisión de la información sobre la base de la expresión genética, a diferencia de la herencia genética que se basa en la información codificada en el ADN. Los mecanismos epigenéticos incluyen metilación del ADN, modificación de histonas, acetilación, etc. y pueden actuar en el "encendido" o "apagado" de ciertos genes modificando así la expresión de éstos. Estos mecanismos son heredables pero su alcance no perdura más allá de cierto número de generaciones dependiendo de la especie. Una característica interesante de estos mecanismos es que permiten co...
Theor Biol Forum, 2013
Modularity in biological systems is a central theme in current research. However, there are some ... more Modularity in biological systems is a central theme in current research. However, there are some problems related to the vague definitions of the concept of a module that impede both its empirical application and the comparison of data from different studies. In this article, we propose to characterize this concept which is consistent with the diverse ways in which it is conceptualized in the specialist literature. We test our characterization by analyzing the case study of the craniofacial complex. We conclude that the proposed delimitation allows a better understanding of modules since it differentiates between the concept of the module as a state (morphofunctional modules) and as a process (a product of ontogenetic or phylogenetic history).
CERN European Organization for Nuclear Research - Zenodo, Jun 1, 1998
La teoría de los sistemas de desarrollo (TSD) pretende realizar una síntesis conceptual que vincu... more La teoría de los sistemas de desarrollo (TSD) pretende realizar una síntesis conceptual que vincule el desarrollo ontogenético con la evolución. Sus antecedentes pueden ser encontrados básicamente en los trabajos de Waddington y de Bertalanffy quienes aportaron las bases de la canalización del desarrollo y la teoría de sistemas biológicos, respectivamente. El objetivo de este artículo es realizar un análisis conceptual preliminar de la TSD y reflexionar acerca de los aportes potenciales de la TSD como marco teórico para la biología del desarrollo en particular y la biología evolutiva en general. Para ello, se tendrán en cuenta algunos de los conceptos y propuestas que componen este marco y se trabajará sobre datos secundarios obtenidos de la bibliografía. Se concluye que la TSD: 1-logra argumentar en contra de la visión gen-centrista respecto de las explicaciones que pretenden justificar el desarrollo biológico y evolutivo; 2- argumenta de manera coherente a favor del rol de la epig...
Clinical and experimental obstetrics & gynecology, 2002
The aims of this work were to analyse body and brain growth as produced by deficiencies in the ut... more The aims of this work were to analyse body and brain growth as produced by deficiencies in the uteroplacental blood supply, and to evaluate sexual responses to intrauterine stress. Intrauterine growth retardation (IUGR) was experimentally induced in pregnant rats by partial obstruction in both uterine vessels at 1,7 and 14 gestational days. The dysfunctions in the placental circulation retarded both somatic and cerebral growth, depending on the period of gestational stress and the sex. Brain weight had a relatively greater resistance than body weight, which is called a "brain sparing" mechanism. The body and brain sexual dimorphism in control pups was inhibited in IUGR pups. This study shows that prenatal stress exposition might modify growth and sexual dimorphism at birth.
Revista Argentina de Antropología Biológica, 2010
RESUMEN: Diez machos Saimiri sciureus (CEBIDAE), nacidos en el Centro Argentino de Primates (CAPR... more RESUMEN: Diez machos Saimiri sciureus (CEBIDAE), nacidos en el Centro Argentino de Primates (CAPRIM), fueron divididos a partir del destete (6 meses de edad), en un grupo de cinco controles, alimentados ad libitum con dieta semisintética con 20% de proteínas y otro de cinco malnutridos, alimentados ad libitum con dieta semisintética con 5% de proteínas. El experimento fue dividido en tres períodos en los que fueron tomadas radiografías en norma lateral y superior: cada 15 días (período l), cada 30 días (período II) y cada 60 días (período III). El estudio finalizó a los 30 meses de edad postnatal. Sobre cada radiografía fueron tomadas longitud (L), ancho (A) y altura (H) y fueron calculados índices volumétricos y morfométricos para los componentes masticatorio, respiratorio y óptico y neurales anterior, medio y posterior. Los componentes faciales crecieron más que los neurocraneanos. Tuvieron un crecimiento diferencial en orden decreciente: masticatorio, respiratorio y óptico. Esta ...
Theoretical biology forum, 2013
Modularity in biological systems is a central theme in current research. However, there are some ... more Modularity in biological systems is a central theme in current research. However, there are some problems related to the vague definitions of the concept of a module that impede both its empirical application and the comparison of data from different studies. In this article, we propose to characterize this concept which is consistent with the diverse ways in which it is conceptualized in the specialist literature. We test our characterization by analyzing the case study of the craniofacial complex. We conclude that the proposed delimitation allows a better understanding of modules since it differentiates between the concept of the module as a state (morphofunctional modules) and as a process (a product of ontogenetic or phylogenetic history).
Episteme, 1998
RESUMEN En este trabajo se analizan conceptos pertenecientes a la biología evolutiva como los de ... more RESUMEN En este trabajo se analizan conceptos pertenecientes a la biología evolutiva como los de adaptación, selección natural y la relación entre ambos. También se discute la posición defendida por el determinismo genético en evolución, sostenido por la sociobiología y la ...
dialnet.unirioja.es
Acceso de usuarios registrados. Acceso de usuarios registrados Usuario Contraseña. ...
Episteme, 1998
Page 1. 7 3 ¿ES POSIBLE UNA PROPUESTA LAKATOSIANA PARA EL ESTUDIO DEL COMPONENTE FACIAL EN MAMIFE... more Page 1. 7 3 ¿ES POSIBLE UNA PROPUESTA LAKATOSIANA PARA EL ESTUDIO DEL COMPONENTE FACIAL EN MAMIFEROS? Vicente Dressino(1), Guillermo M. Denegri(2) e Susana G. Lamas (3).1 Episteme, Porto Alegre, v. 3, n. 5, p. 73-87, 1998. ...
Ciências da vida: Estudos filosóficos e históricos. …, 2006
American Journal of Physical Anthropology, 1996
Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to ... more Twenty male squirrel monkeys (Saimiri sciureus boliviensis) raised in captivity were allotted to one of the following groups: weanling control (C6) sampled at 6 months of age; young control (C24) fed ad libitum on a control diet and killed at 24 months of age; and malnourished ...