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E Ramsey

Publications and source records attributed to E Ramsey.

13 recordsLinked to original sources
PubMed1990

Installation and testing of an optimized epithermal neutron beam at the Brookhaven Medical Research Reactor (BMRR).

NCT is a binary system, in which 10B is physiologically targeted to tumor and then allowed to interact with thermal neutrons generated in the treatment volume by an externally applied neutron beam. Consequently, an unusually large number of parameters are obtained, which bear on the resultant Therapeutic Gain (TG). However, a perusal of these data, as illustrated in Figure 7, indicates that the TG would increase significantly beyond values projected in this paper if the absolute amount of 10B could be increased above 30 ppm. For example, increasing 10B concentration in tumor to 45 ppm would increase TG by approximately 33% (with a T/N of 5). A similar increase in TG would follow an increase in T/N from 5 to 10. Those associated with the development of boron compounds for NCT feel that such developments are within reach.

Boron Compounds↗
PubMed1989

Mortality and reoperation after open and transurethral resection of the prostate for benign prostatic hyperplasia.

As part of an ongoing effort to evaluate alternative treatments for benign prostatic hyperplasia, we compared the outcomes of transurethral resection of the prostate with those of open prostatectomy. Men undergoing prostatectomy in Denmark (n = 36,703), Oxfordshire, England (n = 5284), and Manitoba, Canada (n = 12,090), were identified retrospectively through administrative data and followed for up to eight years. The cumulative percentage of patients undergoing a second prostatectomy was substantially higher after transurethral than after open prostatectomy (12.0 vs. 4.5 percent in Denmark, 12.0 vs. 1.8 percent in Oxfordshire, and 15.5 vs. 4.2 percent in Manitoba). The long-term age-specific mortality rates associated with transurethral prostatectomy as compared with open prostatectomy were also elevated in each country. The data on 1650 Canadian patients were used to investigate the contribution of coexisting morbid conditions to the elevated risk of death. The relative risk was 1.45 (95 percent confidence interval, 1.15 to 1.83) before risk adjustment and 1.45 (95 percent confidence interval, 1.15 to 1.84) after adjustment; the higher mortality was seen among low-risk as well as high-risk patients. These findings suggest that transurethral prostatectomy is less effective in overcoming urinary obstruction than the open operation. Our data also raise the possibility that transurethral prostatectomy may result in higher long-term mortality, although we cannot rule out potential confounding effects of unmeasured characteristics of patients.

Aged↗
PubMed1989

A developmental perspective on antisocial behavior.

A developmental model of antisocial behavior is outlined. Recent findings are reviewed that concern the etiology and course of antisocial behavior from early childhood through adolescence. Evidence is presented in support of the hypothesis that the route to chronic delinquency is marked by a reliable developmental sequence of experiences. As a first step, ineffective parenting practices are viewed as determinants for childhood conduct disorders. The general model also takes into account the contextual variables that influence the family interaction process. As a second step, the conduct-disordered behaviors lead to academic failure and peer rejection. These dual failures lead, in turn, to increased risk for depressed mood and involvement in a deviant peer group. This third step usually occurs during later childhood and early adolescence. It is assumed that children following this developmental sequence are at high risk for engaging in chronic delinquent behavior. Finally, implications for prevention and intervention are discussed.

Antisocial Personality Disorder↗
PubMed1988

Transplantation in Manitoba.

1. Renal transplantation can be performed at small regional centers as successfully as at large centers. 2. Immunosuppression should be individualized for the patient thereby avoiding the use of costly and often clinically complicated immunosuppressive regimens. 3. Small centers need to participate in large regional pools in order to give highly presensitized patients a reasonable chance of successful transplantation. 4. Long-term patient compliance is a major problem and requires careful surveillance of patients' adherence to their prescribed therapy. Frequent follow-up also allows for the detection of late rejection episodes which can often be reversed.

Graft Survival↗
PubMed1986

Expression of the c-myc protooncogene in human prostatic carcinoma and benign prostatic hyperplasia.

We have examined the level of c-myc transcripts in prostate tissue obtained from patients with both benign prostatic hyperplasia and adenocarcinoma of the prostate. A significantly higher level of c-myc transcripts is observed in patients with adenocarcinoma (P less than 0.05). In addition, a subset of patients with adenocarcinoma had levels of c-myc transcripts 2-fold higher than the mean level for this group. These preliminary results indicate that the investigation of c-myc levels as a prognostic indicator in prostatic carcinoma is warranted.

Acid Phosphatase↗
PubMed1979

Immunosuppression with azathioprine, prednisone, and cyclophosphamide.

An immunosuppressive regimen consisting of azathioprine (AZ), prednisone, and intermittent i.v. infusions of 400 mg of cyclophosphamide (CY) in the first post-transplant month was prospectively compared with a no CY regimen. There were no significant differences in patient or graft survival, graft function, or infectious complications between the two regimens.

Azathioprine↗