Biomedical subjects

Raphael Falk

Publications and source records attributed to Raphael Falk.

5 recordsLinked to original sources

PubMed2006

The environment in pediatric practice: a study of New York pediatricians' attitudes, beliefs, and practices towards children's environmental health.

Chronic diseases of environmental origin are a significant and increasing public health problem among the children of New York State, yet few resources exist to address this growing burden. To assess New York State pediatricians self-perceived competency in dealing with common environmental exposures and diseases of environmental origin in children, we assessed their attitudes and beliefs about the role of the environment in children's health. A four-page survey was sent to 1,500 randomly selected members of the New York State American Academy of Pediatrics in February 2004. We obtained a 20.3% response rate after one follow-up mailing; respondents and nonrespondents did not differ in years of licensure or county of residence. Respondents agreed that the role of environment in children's health is significant (mean 4.44 +/- 0.72 on 1-5 Likert scale). They voiced high self-efficacy in dealing with lead exposure (mean 4.16-4.24 +/- 0.90-1.05), but their confidence in their skills for addressing pesticides, mercury and mold was much lower (means 2.51-3.21 +/- 0.90-1.23; p < 0.001). About 93.8% would send patients to a clinic "where pediatricians could refer patients for clinical evaluation and treatment of their environmental health concerns." These findings indicate that New York pediatricians agree that children are suffering preventable illnesses of environmental origin but feel ill-equipped to educate families about common exposures. Significant demand exists for specialized centers of excellence that can evaluate environmental health concerns, and for educational opportunities.

Adult↗

PubMed2006

Pediatrician attitudes, clinical activities, and knowledge of environmental health in Wisconsin.

Pediatricians can reduce exposures to environmental hazards but most have little training in environmental health. To assess whether Wisconsin pediatricians perceive a relative lack of self-efficacy for common environmental exposures and diseases of environmental origin, we assessed their attitudes and beliefs about the role of the environment in children's health. A 4-page survey was sent to the membership of the Wisconsin Chapter of the American Academy of Pediatrics. We obtained a 35.4% response rate after 1 follow-up mailing. Respondents agreed that the role of the environment in children's health is significant (mean 4.28 +/- .78 on 1-5 Likert scale). They expressed high confidence in dealing with lead exposure (means 4.22-4.27 +/- 1.01-1.09), but confidence in their skills for pesticide, mercury, and mold was much lower (means 2.49-3.09 +/- 1.06-1.26; P<.001). Of those surveyed, 88.6% would refer patients to a clinic "where pediatricians could refer patients for clinical evaluation and treatment of their environmental health concerns." These findings indicate that Wisconsin pediatricians agree that children are suffering preventable illnesses of environmental origin, but feel ill equipped to educate families about many common exposures. Significant demand exists for centers that can evaluate environmental health concerns, as well as for educational opportunities.

Environmental Health↗

PubMed2004

Long live the genome! So should the gene.

Developments in the sequencing of whole genomes and in simultaneously surveying many thousands of transcription and translation products of specific cells have ushered in a conceptual revolution in genetics that rationally introduces top-down, holistic analyses. This emphasized the futility of attempts to reduce genes to structurally discrete entities along the genome, and the need to return to Johannsen's definition of a gene as 'something' that refers to an invariant entity of inheritance and development. We may view genes either as generic terms for units of inheritance whose referents are pragmatic ad hoc and context-dependent, or as (epistemologically) representing entities of cell functions. It is cellular functions that determine the structural referents along the DNA. Structures that happened to secure specific functions that were essential for or conducive to the survival of cells were selected for. With natural selection being the etiological background of genes as functions, genes obtain again their theoretical role as intervening variables, abstractive variables that purely 'summarize' characters. The importance of DNA sequences is that of all possible phenotypes these are the most basic ones from which we can read off the genotype directly.

Amino Acid Sequence↗

PubMed2003

Linkage: from particulate to interactive genetics.

Genetics was established on a strict particulate conception of heredity. Genetic linkage, the deviation from independent segregation of Mendelian factors, was conceived as a function of the material allocation of the factors to the chromosomes, rather than to the multiple effects (pleiotropy) of discrete factors. Although linkage maps were abstractions they provided strong support for the chromosomal theory of inheritance. Direct Cytogenetic evidence was scarce until X-ray induced major chromosomal rearrangements allowed direct correlation of genetic and cytological rearrangements. Only with the discovery of the polytenic giant chromosomes in Drosophila larvae in the 1930s were the virtual maps backed up by physical maps of the genetic loci. Genetic linkage became a pivotal experimental tool for the examination of the integration of genetic functions in development and in evolution. Genetic mapping has remained a hallmark of genetic analysis. The location of genes in DNA is a modern extension of the notion of genetic linkage.

Genetics↗

PubMedDate not supplied

Nervous diseases and eugenics of the Jews: a view from 1918.

The Jewish physician, specializing in psychiatry in Warsaw, Poland, Shneor Zalman Bychowski (1865-1934) was deeply involved in public affairs, and especially in Zionist activity. Although he supported the need for eugenic means to avert the degenerative trends among Eastern Jewish populations, he insisted that the notorious neuropathies of these Jews were not hereditary, but rather induced by the social and economic conditions to which these individuals were exposed. An abridged and annotated trans- lation of Bychowski's Hebrew article in the periodical Ha-Tekufah is presented.

Eugenics↗