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Biomedical subjects

F R Ervin

Publications and source records attributed to F R Ervin.

At least 55 records · Page 3Linked to original sources
PubMed1977

Epidemiological studies of female prisoners. IV. Homosexual behavior.

The existence of homosexual behavior in female offenders is investigated not only as an adaptive process but as an established behavior existing prior to detention. Ninety-five prisoners from the Framingham Institution for Women were included: 26 were self-reported homosexuals, 42 were considered homosexuals by prision staff, and 27 were nonhomosexuals. Suicidal thoughts, suicidal attempts, psychiatric problems during menstruation, and a history of violent crimes against persons were characteristic of the homosexual group, whereas a history of crimes against self and property as well as history of alcoholism were common in the nonhomosexual group. Violet behavior together with suicidal attempts in homosexual female prisoners support the hypothesis that aggressive impulses may be expressed either externally or toward the self, the problem being one of impairment in control mechanisms. The findings also suppor the idea that violent behavior, as shown by this group of incarcerated homosexual females, is multidetermined. The factors that influence its appearance and expression could include a history of family violence, impulse control as children, neurological abnormality, sex role identification problems, biochemical abnormalities (manifested as menstrual irregularities), and impulse control problems as adults. A better understanding of human violence must be based on the recognition of the multidimensional nature of the problem using the tools and insights from many disciplines.

Adaptation, Psychological↗
PubMed1977

Parental loss, depression and violence. III. Epidemiological studies of female prisoners.

Information was obtained from 95 incarcerated female prisoners on their history of violence, on their feelings of depression, their suicide attempts, and on their history of loss of parents. The data revealed that the loss of father before the age of 10 years was more highly correlated with signs of depression in these women prisoners than was loss of mother. Women who reported at least one suicide attempt in the past were significantly more depressed on the self-report measure of depression than the other women, and were more likely to be judged as violent on the basis of several independent indices. The results support the hypothesis that violence toward others and suicidal behavior are part of the same phenomenon of impairment in control mechanisms.

Depression↗
PubMed1976

Clinical and pharmacological studies of ticarcillin in gram-negative infections.

Twenty-seven patients with serious gram-negative infections were treated with ticarcillin in an average daily dosage of 237 mg/kg (range, 174 to 307 mg/kg). Ticarcillin was bactericidal for all infecting organisms in concentrations ranging from 31.2 to 125 mug/ml. Five of 8 patients (62%) with overwhelming Pseudomonas pneumonia were cured or improved, and 9 of 12 (75%) were cured of pneumonia caused by other gram-negative organisms. Of six extrapulmonary infections caused by Pseudomonas, five (83%) were cured or improved. In seven cases, the infecting organism reisolated during therapy was more resistant to ticarcillin than the primary isolate. The serum half-life of ticarcillin in three patients with renal failure was 11.2 +/- 1.0 h, and during hemodialysis it decreased to 6.3 +/- 1.8 h. There were two episodes of superinfection with resistant organisms. Thirteen patients (48%) manifested eosinophilia, one of whom had severe urticaria. Prolongation of bleeding time was attributable to ticarcillin in two patients. Ticarcillin appears to be effective for therapy of serious gram-negative infections in dosages 30 to 50% less than those recommended for carbenicillin.

Adult↗
PubMed1976

Inactivation of gentamicin by penicillins in patients with renal failure.

Kinetics of gentamicin inactivation by carbenicillin and ticarcillin were studied in vitro and in 17 patients with renal failure. In vitro, the half-life of carbenicillin in human serum at 37 C is longer (19.2 +/- 0.7 h) than ticarcillin (7.2 +/- 0.6 h). Thus, incubation of gentamicin with equal concentrations of ticarcillin or carbenicillin results in greater inactivation of aminoglycoside activity by the latter. If concentrations of the two penicillins are held equal by repetitive addition, rates of gentamicin inactivation are the same. The serum half-life of gentamicin in patients serving as their own controls was significantly reduced by administration of either penicillin. After carbenicillin, the half-life decreased from 46 +/- 8 h to 22 +/- 3 h (P < 0.02). The constant for inactivation of gentamicin (k(i)) by carbenicillin was 0.02 h(-1). The results indicate that gentamicin requirements are underestimated by methods currently employed to calculate dosage for patients with renal failure who receive carbenicillin concurrently. Adjustment of gentamicin dosage in such cases by application of the k(i) for gentamicin is suggested.

Carbenicillin↗
PubMed1974

Simple assay for clindamycin in the presence of aminoglycosides.

The presence of aminoglycoside antibiotics interferes with the determination of clindamycin levels by standard microbiological assay. A new bioassay method of quantitation of clindamycin in the presence of aminoglycosides is presented. This technique is based on the fact that incorporation of calcium chloride into assay agar blocks the antimicrobial activity of aminoglycosides against Sarcina lutea but allows the assay of as little as 0.31 mug of clindamycin per ml. The error of the system is less than 10%. This method is simple and adaptable to existing assay systems for clindamycin.

Aminoglycosides↗