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B Lagerlöf

Publications and source records attributed to B Lagerlöf.

At least 37 records · Page 2Linked to original sources
PubMed1991

Nuclear DNA analyses in archival material from primary malignant melanoma. A pilot study.

In 28 cases of malignant melanoma, paraffin-embedded specimens were analyzed in order to determine the reliability of ploidy results. The material consisted of thin and thick melanomas. The results indicate that useful prognostic information may be obtained in this kind of material by means of DNA measurements, provided that the analysis is performed on morphologically identified tumor cells. The value of DNA measurements in malignant melanomas may, however, not be as clear as has been reported for several other tumors.

Adolescent↗
PubMed1991

Comparison of nuclear DNA content in primary and metastatic malignant melanoma.

The DNA patterns obtained from 23 primary malignant melanomas and 35 corresponding metastases were compared and found to differ in many cases. In eight cases the primary tumors and their metastases had a ploidy type I ("euploid") DNA pattern. One case had a type I primary tumor and both type I and type II metastases. Five cases had type I primary tumors and ploidy type II ("aneuploid") DNA pattern metastases. In five cases the primary tumors and corresponding metastases were type II, and in another four cases the primary tumors were type II, whereas the metastases were type I. We interpret these data as indicating that malignant melanomas (more often than adenocarcinomas) are composed of genetically heterogeneous tumor sublines that frequently give rise to heterogeneously composed metastases. Since we sometimes observed a change in the DNA content in malignant melanomas, it seems to be more difficult to obtain prognostic information from DNA analysis in malignant melanoma as compared to the more stable adenocarcinomas.

Adult↗
PubMed1985

Adjuvant chemotherapy of malignant melanoma. A pilot study.

In a pilot study, 26 patients with stage I malignant melanoma, tumor thickness greater than 2.25 mm, and/or Clark level IV, and Stage II tumors were randomized to adjuvant chemotherapy with either DTIC, DTIC/CCNU/vincristine, or to a control group with no further treatment after surgery. The chemotherapy group contained 17 patients and the control group nine patients. The follow-up time is 37-54 months. The recurrence-free and overall survival is significantly longer in the patient group treated with adjuvant chemotherapy as compared to controls (p less than 0.025, according to the log-rank test).

Adult↗
PubMed1985

Immune phenotype heterogeneity in AML.

Blood cells from 46 patients with acute myeloid leukaemia were studied for expression of various surface markers, defined by a panel of 12 monoclonal antibodies and the expression of Fc gamma receptors. Corresponding studies were done on normal bone marrow cells. Antibodies which bound to leukaemic cells in high frequencies were those which most frequently also bound to normal bone marrow cells. Immunophenotypic analysis revealed a marked antigenic heterogeneity in AML, also evident within single FAB subclasses. However, leukaemic cells of FAB subclass M1 significantly more often expressed HLA class I antigen than those of FAB subclass M5a, whereas Fc gamma receptors which were expressed only on a few cells in M5a, were increasingly frequent on leukaemic cells of M1-M2, M4, and M5b leukaemias. The frequency of cells reacting with the monoclonal antibody T50/12,11,2 was related to the complete remission rate of the patients. Patients with high frequencies of cells reacting with this antibody had a better complete remission rate than patients with fewer cells binding to this antibody. The immunophenotypic heterogeneity an AML may reflect a great biological variability of this disease. This variability may be of importance for the classification and treatment of AML.

Adult↗
PubMed1985

Leukemic myeloblasts expressing lymphoid markers.

Out of 60 patients with acute myeloid leukemia not preceded by chronic myelocytic leukemia or any preleukemic phase, 7 had both lymphoid and myeloid markers. All patients expressed common acute lymphatic leukemia antigen (CALLA) in 20% or more of their leukemic cells, which also showed positive peroxidase reaction. In addition, 4 patients had Auer rods. Two additional patients had morphologically clear acute monocytic leukemia (FAB M5b) and cells expressing CALLA. In 4 of the 7 patients the sum of the percentages of peroxidase or Leu M1 + and CALLA-positive blast cells exceeded 100%, suggesting that at least some of the cells had both myeloid and lymphoid markers. Moreover, out of 3 patients where double staining with the CALLA antibody J5 and the myeloid marker Leu M1 was performed, 2 had both markers on the same cells.

Adult↗
PubMed1984

Prognostic significance of terminal transferase activity and glucocorticoid receptor levels in acute myeloid leukemia.

A retrospective study was undertaken to evaluate terminal transferase activity and glucocorticoid receptor content as predictors of prognosis in 52 adult patients with acute myeloid leukemia (AML). Eighteen patients who had detectable levels of TdT in their leukaemic cells (greater than or equal to 0.1 unit microgram-1 DNA), had a higher complete remission rate than patients with low TdT activity. Patients below 60 years with increased TdT activity also had longer survival as compared to those with low TdT levels. By combining cytochemical analysis of peroxidase and immunocytochemical staining for TdT it was possible to show that the enzyme was located in leukaemic cells of myeloid origin. Leukemias of monocytic origin had no detectable TdT activity in 10/11 cases. The cellular content of the cytoplasmic glucocorticoid receptor varied from 0 to 2.8 fmol micrograms-1 DNA. There was no difference in receptor content between the different FAB subgroups. High levels of the receptor (greater than or equal to 0.22 fmol microgram-1 DNA) were positively correlated with the remission rate. Patients with TdT levels of greater than or equal to 0.1 unit microgram-1 DNA and a glucocorticoid receptor concentration of greater than or equal to 0.22 fmol microgram-1 DNA had significantly higher remission (P = 0.001) and survival rates (P = 0.007) compared with those with undectectable levels of both TdT and low receptor content. It is thus concluded that combined measurements of TdT and the glucocorticoid receptor are useful predictors of prognosis in AML.

Adult↗
PubMed1983

A study of the reproducibility of the diagnostic criteria for acute leukaemia.

The Leukaemia Group of Middle Sweden recently started a new multicentre study of treatment of adult patients with acute leukaemia from 6 centres. The criteria for the diagnosis, subclassification, degree of leukaemic bone marrow infiltration, remission and relapse are to be used by the morphologists of 6 different pathology departments. The reproducibility of the criteria has been studied by 3 of the morphologists concerned, in a retrospective review of a strictly consecutive series of 79 adult patients treated at Södersjukhuset, Stockholm, Sweden, in the years 1978 to 1981. The results show that the reproducibility of the criteria and the concordance of the morphologists when using them increased when the criteria were made more detailed and precise.

Acute Disease↗
PubMed1981

Further evidence for increased light sensitivity in patients with malignant melanoma.

Minimal erythema dose (MED), immediate pigment darkening (IPD) and skin typing were performed on 130 patients with malignant melanoma and on seventy-three controls. The tumours were histologically classified according to Clark as superficial spreading melanoma, nodular melanoma, and lentigo maligna melanoma. The tumours of twelve patients were not possible to classify. Patients belonging to skin type IV and patients with lentigo maligna melanoma had a significantly higher mean age. The IPD reaction was significantly higher in skin type II than in skin types III and IV both in patients and in controls. IPD and MED showed no significant correlation to age and sex. MED was significantly lower among patients with malignant melanoma than controls. These data indicate that light sensitivity is of aetiological importance in malignant melanoma.

Age Factors↗
PubMed1980

Normal UV-induced DNA repair synthesis in peripheral leukocytes from patients with malignant melanoma of the skin.

Seventeen patients with malignant melanoma were compared to 24 control subjects regarding UV-induced DNA repair synthesis. Peripheral leukocytes were irradiated with different UV-doses and the DNA-repair synthesis was measured in presence of hydroxyurea. A dose response curve was established for each individual. No statistical differences were observed when melanoma patients were compared to the controls.

Aged↗
PubMed1980

Causes of death in leukemia and lymphoma with modern treatment.

An attempt was made to see if new forms of treatment of fungal and bacterial septicemia, or new cytostatic combinations have changed the causes of death in leukemia and lymphoma. Autopsies were studied of 16 cases with acute leukemia, 2 with chronic granulocytic leukemia and 24 with lymphoma. 10 of the 18 patients with leukemia and 10/14 lymphoma patients died although they had no, or only slight, tumor infiltration in the bone marrow and parenchymatous organs; only 1/18 leukemias had extensive infiltration. There was a statistically significant correlation between the extent of marrow and organ infiltration. Cardiac failure (5/18 patients) was almost as common as the main cause of death as septicemia (7/18) in leukemia. The corresponding figures in lymphoma were 5/24 and 9/24, respectively. The present findings contrast with earlier ones, where more septicemia and tumor infiltration were found at autopsy, and less cardiac failure was observed. 15 of 16 cases with septicemia at autopsy had terminal fever. Bacteriological and histological signs of septicemia at autopsy agreed satisfactorily. There was a surprising absence of agreement between terminal granulocytopenia and septicemia; 13 of 16 patients with septicemia had over 0.1 x 10(9) and 10 over 0.5 x 10(9) granulocytes/liter blood.

Agranulocytosis↗
PubMed1979

Cardiomyopathy in leukemia, with reference to rubidomycin cardiotoxicity.

Sixteen patients who had died with leukemia were studied at autopsy between September 1975 and Februrary 1977. Special attention was given to degenerative changes in the heart. Five of the patients died of cardiac failure, all with no or only slight leukemic infiltration in various organs at autopsy. Five patients showed basophilic necroses in the myocardium, and two of these also showed necroses in the bone marrow. The myocardial lipofuscin was significantly (P less than 0.01) higher in the autopsies of leukemic patients (mean age 45 years) than in autopsies performed at the Department of Forensic Medicine in 18 cases of accidental death (mean age 36 years). No dose-response relationship could be found between the amount of myocardial lipofuscin and the total dose of rubidomycin. Eight of twelve patients with malignant lymphoma (mean age 45 years) also had increased amount of myocardial lipofuscin.

Adult↗
PubMed1978

Viability of the human cervical epithelium with dysplasia and carcinoma in situ.

Autoradiograms of histologic slides of 58 human cone specimens with dysplasia and carcinoma in situ were analyzed after tissue samples were incubated with labeled RNA precursors. Both the vertical and lateral distributions of labeled cells were rather uniform in the major part of the epithelium, which suggested that the tissue remained metabolically active during incubation. Only the uppermost epithelial cells in heavily labeled areas were devitalized as deduced by the morphologic appearance of the cells, the absence of labeling in the cells, the trypan blue exclusion test, and the trypsin digestion test. The viability of large epithelial areas suggested that the previously reported focal distribution of proliferating and nonproliferating areas in the cervical epithelium is a genuine phenomenon and not the result of focal epithelial devitalization acquired during incubation.

Carcinoma in Situ↗
PubMed1977

The effect of chronic protozoan infection by Babesia rodhaini on leukemogenesis in mice.

The effect of chronic infection with the protozoan parasite Babesia rodhaini on the subsequent development of mouse leukemia was investigated in three different murine leukemia-lymphoma model systems: congenital lymphoma (in AKR mice), irradiation-induced lymphoma (in C57BL mice), and Rauscher-virus-induced leukemia in NMRI mice. Leukemia incidence was significantly greater than in controls in Babesia-infected (NMRI strain) mice that had been infected with an adjusted dose of Rauscher leukemia virus.

Animals↗
PubMed1977

The frequency and distribution of mitotic figures in dysplasia and carcinoma in situ.

The frequency and topographical (i.e. vertical and lateral) distribution of mitotic figures in normal cervical epithelium as well as in various degrees of dysplasia and in carcinoma in situ, was studied in punch biopsies and in subsequent cone specimens from 40 patients. The frequency of cells in mitosis in the whole thickness of the epithelium increased step-wise from normal epithelium to slight-moderate dysplasia, severe dysplasia and carcinoma in situ. A difference in the frequency of mitotic figures between slight and moderate dysplasia was recorded in the superficial cell layers of the epithelium. These findings, together with earlier reported differences in the frequency of DNA synthetizing cells between the various epithelial alterations support the validity of the histological classification of cervical atypias. Areas with mitosis alternated with areas without mitosis, supporting even here previous autoradiographical findings. The possible co-existence of proliferative and non-proliferative epithelial compartments in dysplasia and in carcinoma in situ of the uterine cervix is suggested.

Carcinoma in Situ↗