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Biomedical subjects

E Seifter

Publications and source records attributed to E Seifter.

At least 73 records · Page 4Linked to original sources
PubMed1976

Antipyretic and antiviral action of vitamin A in Moloney sarcoma virus- and poxvirus-inoculated mice.

Six week-old male CBA/J mice fed a commercial powdered laboratory chow or the same chow supplemented with vitamin A palmitate (150,000 U/kg) were inoculated with either the Moloney strain of murine sarcoma virus (M-MuSV) or poxvirus. Central body temperature was measured daily. Both viruses elicited fevers, but the fevers were less pronounced and of shorter duration in the mice ingesting the vitamin A-supplemented diet. Palpable M-MuSV-induced tumors appeared later, were less frequent, grew more slowly, and were resorbed sooner in the mice fed the vitamin A supplement. Similarly, in these mice the appearance of pox lesions was delayed, their numbers reduced, and their disappearance hastened.

Analgesics↗
PubMed1976

Microcrystalline collagen hemostat (MCCH) and wound healing.

The effect of MCCH on wound healing was studied in animals and patients. A full thickness dorsal skin defect was made in mice and standard amounts of MCCH applied immediately to the wound in half the mice. There were no significant differences in wound closure rates between control and MCCH treated mice. A standard dorsal skin incision was made in rats. In half the rats, MCCH was put into the incision just before suturing with fine stainless steel sutures. There were no statistically significant differences in breaking strengths between control and MCCH treated rats when tested on the 8th, 20th and 40th days postoperatively. Histologic examination of the wounds showed mild inflammatory reaction surrounding the MCCH-fiber fragments, but no giant cells. Small amounts of MCCH were demonstrable at 40 days. Full thickness skin burns in pigs were excised one day after burning. MCCH was applied immediately in some pigs; excess MCCH was removed by saline irrigation. Split thickness skin autografts were applied. MCCH was applied to donor sites. The "takes" of the grafts were excellent and not affected by the use of MCCH and the donor sites healed uneventfully. MCCH was used in four patients with burns, three of whom underwent early excision of full thickness skin burns and immediate autografting. The fourth underwent skin grafting to the granulating areas 3 months after injury. The MCCH was applied to some donor sites and to some areas of excision. In one patient with severe burns, wound sepsis developed equally in areas with and without MCCH and the grafts were lost. In the other three patients, there were excellent takes of the grafts at all sites. All donor sites, treated and untreated, healed normally in all patients.

Adult↗
PubMed1975

Antitumor action of vitamin A in mice inoculated with adenocarcinoma cells.

Vitamin A palmitate was incorporated into a laboratory chow (150,000 IU/kg diet) and fed ad libitum to C3H/HeJ female mice inoculated with 1 times 10-6 C3HBA tumor cells, beginning the day of inoculation. Control female mice of the same strain similarly inoculated were fed the laboratory chow alone. Vitamin A did not affect rate for the first 19 days, after which growth rates were independent of treatment. Vitamin A-treated mice survived for significantly longer times than did control mice.

Adenocarcinoma↗
PubMed1975

Influence of vitamin A on wound healing in rats with femoral fracture.

Groups of healthy wounded rats with and without comminuted femoral fractures, and maintained on nutritionally complete commercial rat chow with and without supplemental vitamin A, were studied. The test wounds were standard dorsal skin incisions and s.c. polyvinyl alcohol sponge implants. In some experiments the rats were pair-fed; the rats with femoral fracture not receiving supplemental vitamin A were the lead group for determining food allowanced. In other experiments, the rats were allowed food ad libitum. We found that wound healing of rats with femoral fracture was increased when supplemental vitamin A was given, but the supplemental vitamin A did not completely obviate the adverse effects of fracture. The ratio of the breaking strengths of the skin incisions after formalin fixation to the breaking strengths of the incisions in the fresh state was higher in the unsupplemented rats, supporting the results of our earlier experiments that vitamin A increases the rate of collagen cross-linking.

Administration, Oral↗
PubMed1975

Comparison of sisomicin and gentamicin in bacteriuric patients with underlying diseases of the urinary tract.

Sisomicin and gentamicin (2 mg/kg) were administered in a random fashion to patients with bacteriuria superimposed on abnormalities of the urinary tract. Cure was achieved in a similar number of patients in both groups, but superinfection and reinfection with resistant microorganisms was more frequent in patients receiving gentamicin. Untoward side effects were not frequent in this series, especially if the serious underlying urological disease of most patients is taken into consideration. The susceptibility of the causative pathogens to the antibiotic administered and the severity of the underlying disease were the most important factors in the outcome.

Anti-Bacterial Agents↗
PubMed1974

Chemical debridement of burns.

The development of effective, non-toxic (local and systemic) methods for the rapid chemical (enzymatic and non-enzymatic) debridement of third degree burns would dramatically reduce the morbidity and mortality of severely burned patients. Sepsis is still the major cause of death of patients with extensive deep burns. The removal of the devitalized tissue, without damage to unburned skin or skin only partially injured by burning, and in ways which would permit immediate (or very prompt) skin grafting, would lessen substantially the problems of sepsis, speed convalescence and the return of these individuals to society as effective human beings, and would decrease deaths. The usefulness and limitations of surgical excision for patients with extensive third degree burns are discussed. Chemical debridement lends itself to complementary use with surgical excision and has the potential advantage over surgical excision in not requiring anesthesia or a formal surgical operation. The authors' work with the chemical debridement of burns, in particular the use of Bromelain, indicates that this approach will likely achieve clinical usefulness. The experimental studies indicate that rapid controlled debridement, with minimal local and systemic toxicity, is possible, and that effective chemotherapeutic agents may be combined with the Bromelain without either interfering with the actions of the other. The authors believe that rapid (hours) debridement accomplished by the combined use of chemical debriding and chemotherapeutic agents will obviate the possibility of any increase in infection, caused by the use of chemical agents for debridement, as reported for Paraenzyme(21) and Travase.(39,48) It is possible that the short term use of systemic antibiotics begun just before and continued during, and for a short time after, the rapid chemical debridement may prove useful for the prevention of infection, as appears to be the case for abdominal operations of the clean-contaminated and contaminated types.

Animals↗