PubMed Health⌕ Search

Biomedical subjects

D Savage

Publications and source records attributed to D Savage.

9 recordsLinked to original sources
PubMed1992

Differences in the frequency of normal and clonal precursors of colony-forming cells in chronic myelogenous leukemia and acute myelogenous leukemia.

Acute myelogenous leukemia (AML) is a clonal disease that is heterogeneous with respect to the pattern of differentiative expression of the leukemic progenitors. In some patients, the involved stem cells manifest pluripotent differentiative expression, whereas in others, the involved progenitors manifest differentiative expression mainly restricted to the granulocytic pathway. This is in contrast to chronic myelogenous leukemia (CML) which is a clonal disease known to arise in a pluripotent stem cell. Therefore, we tested whether these leukemias could be distinguished with respect to their involvement of immature precursors by studying colony-forming cells (CFC) and their precursors from four glucose-6-phosphate dehydrogenase (G6PD) heterozygous patients with AML and five patients with CML. CFC were separated from their precursors by FACS for expression of CD33 and CD34 followed by growth in a long-term culture (LTC) system. The vast majority of CFC express both the CD33 and CD34 antigens, but their less mature precursors, detected by their ability to give rise to CFC in LTC, express only CD34. In three of the four patients with AML, the CD33-CD34+ cells produced CFC in LTC that appeared to be predominantly or completely normal (ie, nonclonal) in origin. In the fourth patient, a significant enrichment of nonclonal progenitors was obtained in the CD33-CD34+ population, but these cells may also have included significant numbers of clonal cells. In contrast, in four of five patients with CML, cultures of both the CD33-CD34+ and CD33+CD34+ populations produced CFC in LTC that were almost entirely clonal in origin, whereas in the fifth patient a substantial number originated from nonclonal stem cells. These data indicate that granulocyte/monocyte progenitors are predominantly clonally derived in CML and AML. In CML, their precursors are also predominantly clonal, but in some cases of AML they are not. These findings may have implications for understanding the success or failure of current therapies of AML and CML.

Antigens, CD↗
PubMed1992

Home blood pressure monitoring in diabetes.

Forty three children with diabetes were recruited to evaluate home blood pressure monitoring using an electronic oscillometric sphygmomanometer (Philips HP5330). This device was found to be simple to use and reliable. It fulfilled the accuracy criteria of the American Association for the Advancement of Medical Instrumentation for both systolic and diastolic blood pressure and those of the British Hypertension Society for systolic blood pressure. Thirty eight children successfully measured their own blood pressure at home and taught other family members to do the same. The results indicate that home blood pressure monitoring is of value in the management of diabetic children.

Adolescent↗
PubMed1991

Survival of DNA HLA-DR typed and matched cadaver kidney transplants. The Collaborative Transplant Study.

The clinical value of serological HLA matching for cadaver kidney transplantation remains uncertain because the success rate for HLA-matched cadaver transplants is lower than that of HLA-matched sibling grafts. Up to 25% of serological HLA-DR typings may be incorrect when compared with a more accurate DNA-RFLP method, and we have now examined whether incorrect HLA-DR typings account for the lower than expected success rates of HLA-matched cadaver transplants. 58 transplant centres took part in this study and DNA was extracted from over 4000 samples of frozen tissue at the study centre. 8 laboratories then completed blind RFLP typing for HLA-DR. Serological typing data were reported by individual transplant laboratories. 29 of 107 transplants (27%) that were reported as HLA A, B, DR compatible and 76 of 273 (28%) transplants that were reported as HLA B, DR compatible according to serological typing were found to be HLA-DR mismatched by DNA typing. The one-year transplant success rate for DNA-matched HLA, A, B, DR grafts was 87% compared with 69% for mismatched grafts (p less than 0.02); the corresponding success rate for DNA-matched HLA B, DR grafts was 85% compared with 72% for mismatched grafts (p less than 0.01). Many transplants that were previously thought to be HLA matched are mismatched, and this finding may account for previously unexplained graft failures.

Cadaver↗
PubMed1979

The physician's duty to report the battered child syndrome.

All US jurisdictions require that physicians file formal reports of suspected cases of child abuse and/or child neglect. Most states expressly grant civil immunity from lawsuits to all reporting physicians. The physician who fails to file such a report will be exposed to civil liability for professional malpractice when failure to report leads to continued child abuse. At least 37 states provide for criminal penalties for physicians who fail to report battered children. This paper examines procedures for minimal compliance with any state's reporting statute and details the precise reporting procedure for each US jurisdiction.

Child↗
PubMed1978

Epileptic laughter with precocious puberty.

A child with associated epileptic laughter and precocious puberty is reported. The significance of epileptic laughter as a possible marker of hypothalamic disease is noted.

Brain Diseases↗