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Biomedical subjects

G Gingras

Publications and source records attributed to G Gingras.

66 records · Page 4Linked to original sources
PubMed1970

Teaching of rehabilitation medicine.

Physical medicine and rehabilitation embrace a wide spectrum of activities in both the medical and surgical fields. Possibly more than any other physician, the physiatrist must participate in teamwork with paramedical personnel.Departments of Physical Medicine and Rehabilitation must be established in all university faculties of medicine to provide training at both pre- and postgraduate levels.Medical students should receive at least 25 hours of lecture-demonstrations in appropriate centres. Composite case presentations to students, which would allow the physiatrist and the paramedical personnel each to discuss their role in diagnosis, prognosis and treatment, are advocated.Vocational considerations for the future physiatrist, including the duration of his training, the program of study and the type of examinations proposed, are discussed briefly.

Canada↗
PubMed1970

The Haxo and Blinks electrode. A mathematical model.

Fick's diffusion equations have been solved for the Haxo and Blinks electrochemical determination of photosynthetic O(2) evolution. The model shows the method to be quantitative in the case of a "long" chamber measuring constant rates of O(2) evolution. Transients are amplitude distorted by an amount depending on the space distribution of the O(2) sources. A correction equation applied to the raw data permits the recovery of the original signal.

Diffusion↗
PubMed1967

A Canadian electric-arm prosthesis for children.

The thalidomide tragedy in Canada initiated new efforts to produce functional prosthetic appliances for very young amputees. In 1962, the Rehabilitation Institute of Montreal began to fit 36 babies with adapted conventional and gas-operated devices.Practical experience with the Soviet prosthesis proved the feasibility of myoelectric control, and indicated the possibility of using skin electrodes over an active muscle for control purposes in children. We obtained assistance from the Northern Electric Company, whose research laboratories produced the prototype arms described in this report. An all-electric prosthetic system was developed which carries out four different movements driven by a single motor. Function is effected by switches, but a myoelectric control system could be readily adapted without major changes. In the description of our needs for the proposed arm, we asked for modular construction and a minimum service life of one year between major repairs. Details of design and performance are outlined in this report.Initial clinical experience indicates that the prosthesis is completely accepted by the young patient, in spite of its excessive weight and inconvenient control. Four powered joints give the child greater functional freedom. In future we plan to fit an older child and will study more bilateral installations in the next 14 months. After further use, study and improvement, this device will become a useful prosthesis.

Arm↗
PubMed1966

Medical and psychosocial aspects of the habilitation of thalidomide children.

The habilitation of 34 thalidomide children, begun in 1963 at the Rehabilitation Institute of Montreal, involved the contribution of many medical and paramedical disciplines. These individual contributions are described.Habilitation of congenitally deformed children must be initiated at an early age. The early prescription of a prosthesis is desirable. Their care involves a broad range of services that must be continued over many years. Parents require support before they can accept the misfortune that has befallen them and their deformed child. Despite the necessity of frequent hospitalizations, children should be reared in a home setting. From their experience, the authors conclude that children born with malformations, and their parents, should be thoroughly evaluated and followed up for many years; and recommend that governments should finance programs for the complete habilitation of all children born with congenital malformations. National registries for the compulsory recording of birth deformities should also be established.

Abnormalities, Drug-Induced↗
PubMed1965

Rehabilitation of the aged.

The rehabilitation needs and goals of older people differ in many respects from those of the young. In younger individuals a crippling condition may affect an otherwise healthy body, while in an older person it may be superimposed on other pre-existing degenerative diseases. Thus, in older patients the restorative or rehabilitative phase rarely can be separated from the phase of definitive medical treatment.The primary goal of rehabilitation of younger individuals is usually vocational. In the older group this goal or objective is, by and large, secondary. This does not minimize, however, the value of medical and social services in the rehabilitation of older persons. The simple ability to care for his own personal needs can do much to help the elderly disabled patient regain his dignity and self-respect and remove his fears of becoming a burden on his family or society.

Aged↗
PubMedDate not supplied

The puh structural gene coding for the H subunit of the Rhodospirillum rubrum photoreaction center.

The Rhodospirillum rubrum structural gene puh, coding for the photoreaction center H polypeptide, and three other putative genes that surround puh were cloned and sequenced. The deduced 257 amino acid H polypeptide has a molecular weight of 27,909, in close agreement with polyacrylamide gel electrophoresis determination. Hydropathy plots predict a single hydrophobic alpha helix. The H polypeptide of Rhodospirillum rubrum shares only 23% of its residues with all three of the H polypeptides from Rhodopseudomonas viridis, Rhodobacter capsulatus, and Rhodobacter sphaeroides. Despite this apparent low degree of similarity, statistical analysis leaves no doubt about their close relatedness. Interspecies evolutionary distance, assessed by this analysis, confirms the closeness of the two Rhodobacter species, Rhodospirillum rubrum and Rhodopseudomonas viridis being approximately equidistant from them. Three regions of the H polypeptide are highly conserved in all four species. They correspond to known contact points of H with the complex of the other two (L and M) subunits on the cytoplasmic side of the membrane. A glutamic acid residue (H polypeptide residue 177), conserved in the other bacteria and suggested to be involved in the binding of secondary quinone QB, is replaced by serine in Rhodospirillum rubrum. The open reading frames G115, I2372, and I3087 are predicted to, respectively, encode polypeptides of 480, 224, and 155 residues coiled in 10, 2, and 1 transmembrane helices. Open reading frame G115 shares 56% identical residues with F1696, a sequence arranged in the genome of Rhodobacter capsulatus. The gene product of ORF I3087 is predicted to share highly similar sequences with nitrogenase reductase (encoded by nifH) of 11 different bacterial species and is suggested to have a regulatory function.

Amino Acid Sequence↗