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PubMed2000

Pioneers in the scientific study of neonatal jaundice and kernicterus.

Neonatal jaundice must have been noticed by caregivers through the centuries, but the scientific description and study of this phenomenon seem to have started in the last half of the 18th century. In 1785 Jean Baptiste Thimotée Baumes was awarded a prize from the University of Paris for his work describing the clinical course in 10 jaundiced infants. The work by Jaques Hervieux, which he defended for his doctor of medicine degree in 1847, was, in many respects, a landmark. He had autopsied 44 jaundiced infants and apparently had clinical observations on many others. His descriptions of pathoanatomical findings were very detailed and systematic. A number of his clinical observations are still thought to be accurate today, such as the essentially benign nature of neonatal jaundice in most cases, the appearance of neonatal jaundice during the first 2 to 4 days of life as well as its disappearance within 1 to 2 weeks, and the cephalocaudal progression of jaundice. He described jaundice of the brain in 31 of his 44 autopsied cases, with variable intensity of staining. Johannes Orth was an assistant to the famous Virchow in Berlin, when in 1875 he published the results of an autopsy of a jaundiced term infant. The brain was notable for an intense yellow staining of the basal ganglia, the wall of the third ventricle, the hippocampus, and the central parts of the cerebellum. While the contribution of Orth was limited to this single case report, in 1903 Christian Schmorl presented the results of his autopsies of 120 jaundiced infants to the German Society for Pathology. All of these infants' brains were jaundiced, but only 6 cases demonstrated a staining phenomenon similar to that previously described by Orth. Schmorl coined the term kernicterus (jaundice of the basal ganglia) for this staining pattern. Although the following century of scientific study has added an enormous amount of information about the epidemiology and pathophysiology of neonatal jaundice and kernicterus, the contributions of Hervieux, Orth, and Schmorl will undoubtedly continue to be seen as historical landmarks in our quest for understanding of these phenomena.

France↗
PubMed1989

Lightweight modular orthosis.

Background and highlights are presented concerning the development of a new orthotic system judged to be "the most outstanding innovation in prosthetics and/or orthotics practice" during the 1986-1989 period. The first Brian Blatchford Prize was awarded at the Sixth World Congress of ISPO held in Kobe, Japan. November 12-17, 1989. The new development selected as most deserving of this award consists of a system utilizing inexpensive, lightweight, modular components which can be quickly assembled with a few hand tools to provide custom-fitted knee-ankle-foot orthoses for persons with paraplegia and quadriplegia. These leg frames support standing and permit the patient to begin receiving the physical and psychological benefits of weightbearing as soon as medically feasible after injury. Later, if desired, specially designed knee-joints, with a variety of possible locking features, can be installed on the existing leg frames at a reasonable cost.

Braces↗
PubMed1999

Cell signaling by nitric oxide.

Appreciation of the role of nitric oxide (NO) in mammalian cell biology has toppled the paradigm that biological signaling is initiated exclusively by noncovalent, lock-and-key-type interactions with receptor proteins. Remarkably, nitric oxide is a free radical that signals by chemical reaction with its protein targets, resulting in covalent modifications and a stable alteration in protein structure and function. Although most proteins may be coerced to react with NO in vitro, the specific proteins that are functionally modified by NO within cells will depend on the concentration of NO and the composition of the intracellular milieu. A further level of complexity is introduced into NO signaling by the fact that reactions can occur with NO directly, or secondarily with NO-derived species. Much to the surprise of those who thought that reactive molecules are generated and act only under pathophysiological conditions (e.g., ischemia-reperfusion injury), NO has emerged as a prototype molecule that signals by chemistry in normal physiology. The unique attributes and importance of NO were recently recognized by the Nobel Prize Committee, with their decision to award the 1998 Prize in Medicine to Drs Furchgott, Ignarro, and Murad, pioneers in NO biology. This review surveys what we believe to be the most important mechanisms and targets of signaling by NO.

Animals↗
PubMedDate not supplied

The path to the discoveries of human retroviruses.

Paul Ehrlich, gifted with knowledge, vision, and the capacity to bring his discoveries to practice, shaped the destiny of many biomedical scientific disciplines, including immunology, chemotherapy, hematology, cytology, and cancer research. His perceptive concept of receptors and ligands binding together in highly specific reactions was introduced just over a century ago in 1898 and is both fundamental and central to present day biomedical research. His mother country, Germany, commemorates his seminal contributions to science and to human welfare with an annual prize for achievements in fields that are related to his work. The 1999 Paul Ehrlich and Ludwig Darmsteaedter Prize was awarded to Robert C. Gallo, M.D. for his achievements in the pursuit of cancer related viruses and the growth in culture of human T-cells which led to the discovery of the first human retroviruses and, as a direct consequence, the discovery of the Human Immunodeficiency Virus, the third known human retrovirus. Below, excerpted from his acceptance lecture, is a concise personal history of those discoveries.

Acquired Immunodeficiency Syndrome↗
PubMed1997

Barbara McClintock and the transposition concept.

Barbara McClintock was awarded Nobel Prize in Physiology or Medicine in 1983 for the discovery and characterization of jumping genes or transposons. In 1948 she described for the first time maize controlling elements. She proposed 'transposition' as a mechanism that relates phenotypic characteristics with the presence of unstable genes. This discovery was 'ignored' even though she was recognized as a brilliant cytogeneticist. In this paper I approach the matter of the maize research groups within which McClintock developed all of her work, and the problem of variegation in relation to unstable genes and transposition.

Genetics↗
PubMed1999

[A historical review of the study of electrical activity of heart and origination of electrocardiography].

This paper has an overall review of the historical process of electrocardiographic development and the origination of modern electrocardiography in retrospect and also has an analysis of the scientific background, the important events and the historical effect of outstanding figures throughout the development. The experience and laws contained in the historical development are briefly summerized in this paper. At the same time the authors point out that the establishment of modern electrocardiography and the related technical development are crystallization of the wisdom and the result of the hard work of many scientists including the figures who should have been awarded Nobel Prizes.

Biophysics↗
PubMed2002

[Dopaminergic modulation of cerebral activity and cognitive functions].

Alterations in dopaminergic system are known to lie in the basis of such diseases as Parkinson's disease, Huntington's disease, Attention Deficit/Hyperactivity Disorder, Tourette syndrome, schizophrenia and drug abuse. This induced broad investigations of dopaminergic system in nearly all the areas of neuroscience. New insights into the pathogenesis of neuropsychiatric diseases have emerged. Research in the field of dopaminergic neurotransmission and memory was awarded Nobel prize in the year 2000. New avenues for the development of more selective drugs have been opened. In their daily practice clinicians are often prescribing medications acting on presynaptic or postsynaptic sites of dopaminergic units. Thus the aim of this review was to renew some knowledge on the architecture of dopaminergic system and also to glance through some of the studies implying its modulating effect on cognitive functions.

Attention Deficit Disorder with Hyperactivity↗
PubMed2003

Facilities for treatment of stormwater runoff from highways.

Stormwater is the major water inflow to many water bodies in Stockholm. Stockholm City has adopted a strategy, which defines the need to treat different kinds of stormwater entering different receiving waters. The Stockholm Water Company has tested various ways of treating stormwater. In 2000, the City of Stockholm arranged a stormwater treatment technology competition. Prizes were awarded to four winning entries. One installation was completed in 2001 and another is now under construction.

Facility Design and Construction↗
PubMed2006

Exploiting immunology and molecular genetics for rational vaccine design against tuberculosis.

One hundred years after the Nobel Prize was awarded to Robert Koch for his work on tuberculosis (TB) and 85 years after the development of the attenuated vaccine strain, Mycobacterium bovis bacille Calmette-Guérin (BCG), by Albert Calmette and Camille Guérin, effective prevention measures against TB are still not available. However, the first decade of the 21st century will witness the implementation of clinical trials with several novel vaccine candidates. These candidates fall into two groups: (1) subunit vaccines aimed at boosting the immune response induced by a BCG prime, and (2) recombinant (r)BCG improved to replace the current BCG vaccine strain. For boosting, protein and DNA vaccines in suitable adjuvant or delivery systems, respectively, as well as recombinant viral carriers, such as recombinant modified vaccinia virus Ankara, are being tested. For rBCG prime, a vaccine strain with higher immunogenicity and a strain overexpressing a dominant antigen have been developed. These vaccine candidates will have passed phase I clinical trials before the end of 2006. The goal for the future would be to have these novel vaccine candidates tested in different combinations to facilitate the design of the most efficacious vaccination protocol.

BCG Vaccine↗
PubMedDate not supplied

[Medical student traits associated with future success as physicians].

OBJECTIVE: To identify the individual and family factors present during medical studies which are associated to success as a physician. RESEARCH DESIGN: Prolective case-control study. SETTING: Mexico City metropolitan area. STUDY UNITS: 120 physicians considered to be successful and 245 physicians who according to an established criteria were considered to be non-successful. MAIN MEASUREMENTS: A success-achieving index was constructed on the opinion of 134 physicians from different health-care institutions private and public. The index was composed by criteria such as being a member of prestiged academic associations; having a practice in third level institutions; having done postgraduate studies; being a professor with teaching and research activities; having obtained directive medical positions; and a high income at the moment of the interview. RESULTS: The main factors associated to success were: frequent attendance to cultural activities by the family of the subjects (OR = 5.2, IC 95% = 3.15-8.60, p = 0.00000001); the global score obtained during their medical studies, i.e. higher than 8.5 over 10 (OR = 4.43, IC 95% = 2.64-7.49, p = 0.00000001); and having been awarded recognitions, prizes or scholarships during their medical studies (OR = 4.3, IC 95% = 2.64-7.03, p = 0.00000001). A logistic regression model selected the cultural activities of the family, global score during medical studies and earning of recognitions, prizes and scholarships as independent variables associated to success achievement (p = 0.00001). CONCLUSIONS: Frequent cultural activities by the family and academic behavior were the factors present during medical studies which were associated to ulterior success as a physician.

Achievement↗
PubMedDate not supplied

[Postoperative pain control in the Trento community hospital. Perception of pain by the nurses].

The College of Nurses of Trento (Collegio IPASVI) promoted a call for research works done by nurses, to award a prize to those judged worthy. The three best works were respectively on concordance on triage classification between doctors and nurses; on the results of organizational and educational interventions on the reduction of needle-stick injuries; and on the differences on postoperative pain assessment between nurses and patients. The final reports were later discussed as part of a training exercise aiming at improving the skill of scientific writing and they are published here, together with some comments that emphasize areas of improvement in data analysis and interpretation and some broader issues related to nursing research.

Analgesia↗