PubMed Health⌕ Search

Biomedical subjects

M Moskowitz

Publications and source records attributed to M Moskowitz.

At least 127 records · Page 7Linked to original sources
PubMed1973

The psoas sign, hepatic angle, normal patients, and everyday practice.

While extensive previous references in the literature leave little doubt that disease in the posterior pararenal space can obliterate the psoas margin either in its entirety or in part, little work has been done to evaluate the frequency of when the psoas cannot be visualized in normal individuals. The data presented here indicate that as the right psoas can be expected to be absent in normal patients from 16 to 43% of the time, therefore one cannot ;lean' heavily on it as a clinical tool. On the other hand, absence of the left psoas margin on a single film in the proper clinical setting may be sufficient to draw one's attention to the retroperitoneal space, more particularly the posterior pararenal space, as a possible site of abnormality. However, ancillary radiographic signs such as mass displacement, gas, calcium, or abnormal depositions of fat, should be carefully sought. Preservation of either or both psoas margins certainly does not exclude by any means significant extraperitoneal disease, as can be seen even in our small anecdotal series. The hepatic angle is absent with such frequency in normal patients that it too can only be of questionable value as a primary radiographic sign. In our normal group of patients the splenic angle was absent more frequently than it was present.

Adolescent↗
PubMed1969

Relation of in vitro inhibition by chelates of Clostridium perfringens alpha-toxin to their ability to protect against experimental toxemia.

The inhibition of Clostridium perfringens alpha-toxin by ethylenediaminetetraacetate (EDTA) and diethylenetriaminepentacetate (DTPA) was studied utilizing three different in vitro assay procedures: diffusion on egg yolk-agar, disintegration of muscle sections, and manometric assay with partially purified lecithin as substrate. DTPA was 10 to 20 times more efficient as an inhibitor than EDTA in systems containing relatively large amounts of calcium; these observations were similar to those observed in previous in vivo protection studies. A number of other chelating agents were tested for their ability to inhibit alpha-toxin in vitro and protect mice against it; the chelating agents which were the most efficient in vitro inhibitors had the greatest in vivo protective ability.

Animals↗
PubMed1968

Relationship of route of inoculation and nature of toxin preparation to bioassay of Clostridium perfringens alpha-toxin in mice.

The toxicity of Clostridium perfringens was determined in mice utilizing three different routes of inoculation. There was marked variation in the minimum lethal dose with the different routes; the largest amount was required for the intracutaneous route, less for the intravenous route, and least with the intraperitoneal route. The relationship of toxicity to the lecithinase content of different toxin preparations was assayed. It was found that the toxicity of toxin preparations in different states of purification was not correlated with their lecithinase content.

Animals↗
PubMed1968

Effects of chelates in chemotherapy of experimental gas-gangrene toxemia.

The relative ability of the calcium chelates of calcium disodium ethylenediaminetetraacetate (EDTA) and calcium trisodium ethylenetriaminepentaacetate (DTPA) to protect mice against lethal doses of Clostridium perfringens alpha-toxin was investigated. Their protective ability was assayed by the increase in survival time of mice which had been given large doses of toxin, and by determining the median protective dose of chelate that would protect mice against toxin at a minimum lethal dose of two. In both assay procedures, intraperitoneal, intravenous, and intracutaneous injections of toxin were utilized, and with each toxin injection route the protective ability of the chelate was determined with the three routes of injection. DTPA was 10 to 20 times more effective than EDTA with both types of assay procedure and with all injection routes. DTPA may be superior to EDTA as a protective agent not only because it binds zinc to a greater extent, but also because of its greater retention in the body and its ability to gain entrance into cells. It appears that DTPA may be of value as a therapeutic agent in gas-gangrene.

Animals↗