Search PubMed⌕ Search

Biomedical subjects

K B Miller

Publications and source records attributed to K B Miller.

At least 73 records · Page 4Linked to original sources

Prompt engraftment using autologous peripheral blood stem cells for double autologous bone marrow rescue.

A patient with Hodgkin's Disease, stage IIIA, was treated for recurrent disease with autologous peripheral blood stem cells after ablative chemotherapy. Bone marrow rescue occurred promptly and his disease was significantly reduced. Ablative chemotherapy was administered again and a second bone marrow rescue with peripheral blood stem cells was successful. Sequential peripheral blood stem cell bone marrow rescue, following high dose chemotherapy, may provide an alternative approach in selected patients.

Adult↗

Attack of the sand brier.

Corneal foreign bodies represent one of the more common sources of eye-related trauma presenting to emergency and primary care physicians. Presented is the case of a man in whom the diagnosis was overlooked because a magnifying optical device was not used.

Adult↗

Clinical predictors of infection of central venous catheters used for total parenteral nutrition.

To identify predictors of infection in catheters used for total parenteral nutrition (TPN), clinical and microbiological data were prospectively collected on 169 catheter systems (88 patients). Based on semiquantitative catheter cultures, infection was associated with a positive insertion site skin culture taken close to the time of catheter removal (relative risk [RR] = 4.50), especially one yielding greater than or equal to 50 colonies of an organism other than coagulase-negative staphylococci. Infection was also associated with erythema at the insertion site greater than 4 mm in diameter (RR = 2.93). In a subset of 67 catheters for which blood cultures were obtained, infection was also associated with a positive peripheral venous blood culture (RR = 5.90) and a positive central venous blood culture obtained through the catheter (RR = 5.44). Based on a logistic regression model, periodic cultures of the insertion site should be useful in evaluating subsequent fever in stable patients with indwelling central venous catheters. Another source of fever is likely if inflammation is absent and there is either no colonization or there is colonization by less than 50 colonies of coagulase-negative staphylococci at the insertion site. Conversely, the catheter should be removed and cultured semiquantitatively if the site is colonized by an organism other than coagulase-negative staphylococci. We suggest that blood culture results add little to the risk estimate in these situations.

Adult↗

Human myiasis caused by Phormia regina in Pennsylvania.

A case of human myiasis caused by the black blowfly, P. regina, has been presented. Although various reports have documented the therapeutic effects of maggot infestation, infection and mortality by gas-forming anaerobic organisms also have been reported. The removal of maggots from a wound can be accomplished using various methods. The authors successfully used topical application of dichlorotetrafluoroethane.

Animals↗

Trisomy/tetrasomy 13 in seven cases of acute leukemia.

We report the clinical presentation and the morphologic, histochemical, and immunophenotypic characteristics of seven patients with acute leukemia who had trisomy/tetrasomy 13 as the sole cytogenetic abnormality in their leukemia. Five patients had trisomy 13 at diagnosis of acute leukemia. All five of these patients had undifferentiated leukemias. The sixth patient, who had French-American-British (FAB) type M2 acute nonlymphocytic leukemia (ANLL), and the seventh patient with biphenotypic acute leukemia developed the trisomic clone as a new abnormality late in the course of their disease. A review of the literature revealed 28 previously reported hematologic malignancies with trisomy 13 or tetrasomy 13q as a solitary cytogenetic abnormality. Trisomy 13 appears to represent another rare but nonrandom cytogenetic abnormality in acute leukemia. In our series trisomy 13 is largely associated with acute leukemia with little myeloid or lymphoid differentiation.

Acute Disease↗

Pathogenetic implications of internuclear bridging in myelodysplastic syndrome. An Eastern Cooperative Oncology Group/Southwest Oncology Group Cooperative Study.

Numerous morphologic features have been described in bone marrow and peripheral blood in myelodysplastic syndrome (MDS). We draw attention to a high incidence of a subtle morphologic feature, internuclear bridging (INB), not previously recognized as a morphologic feature in MDS. The occurrence of INB in MDS suggests an underlying abnormality of mitotic division that could explain the impaired production of hematopoietic cells, the addition and deletion cytogenetic changes, and the stepwise disease progression and cytogenetic progression characteristic of MDS. Lack of awareness that INB occurs in MDS may cause confusion of MDS and congenital dyserythropoietic anemia type I, a congenital process also characterized by INB.

Bone Marrow↗

Does the dexamethasone suppression test relate to subtypes, factors, symptoms, or severity?

Results of the dexamethasone suppression test (DST) are frequently abnormal in depression but not always. We performed the DST in 95 depressed inpatients to determine whether abnormal DST results were associated with individual symptoms of depression, latent behavioral "factors," melancholia, or severity of depression. Initial insomnia, agitation, loss of sexual interest, and weight loss correlated significantly with nonsuppression. Using multiple regression, these four symptoms contributed independently to the variance in DST results and more closely associated with the DST results than did severity or the diagnosis of melancholia or endogenous subtype. Factor analysis failed to identify a factor that correlated with the DST results more significantly than did the individual symptoms. Our findings and a literature review suggest that DST nonsuppression associates with certain vegetative signs of depression but not with such symptoms as loss of interest or anhedonia nor with "psychological" symptoms such as guilt, worthlessness, helplessness, hopelessness, or suicidal ideation.

Adolescent↗

Anti-DNA antibody idiotypes in primary biliary cirrhosis.

A significant increase in 16/6 Id--a major cross-reactive idiotype of anti-DNA antibodies (Ab) derived from a patient with systemic lupus erythematosus (SLE) and hitherto identified in SLE patients and their relatives, was found in 16/17 patients with primary biliary cirrhosis (PBC). The increased serum level of Ab with the 16/6 idiotype (16/6 Id) in PBC patients (median 50 ng/ml) was not found in 6/7 of the patients' spouses nor among 27/28 healthy controls or most patients with other types of cirrhosis. The quantity of 16/6 Id was not correlated to either the stage of disease or the presence of antimitochondrial, antinuclear, or anti-dsDNA antibodies. However, 16/6 Id could be shown to be associated with anti-ssDNA antibodies. The high frequency of the lupus-derived 16/6 Id in PBC may accompany the polyclonal B-cell activation seen in that disease. Of 14 healthy first-degree relatives of the PBC patients, 4 (29%) also had elevated serum 16/6 Id (20-25 ng/ml) and the cluster of 3 of them in a single family may indicate a genetic predisposition to develop PBC.

Adult↗

Translocation between chromosomes 7 and 11 in nonlymphocytic neoplasia.

Three cases with chromosome changes involving bands 7p14 or 7p15 and 11p15 are described: one was a Japanese female with an acute myelomonocytic leukemia, the second was a white female with a 10-year history of paroxysmal nocturnal hemoglobinuria who developed a myelodysplastic syndrome, and the third was a patient with Ph-negative atypical chronic myelogenous leukemia with trisomy 8 and a chromosome change involving bands 7p14 and 11p15. These cases possibly indicate that the t(7;11)(p14 or p15;p15) change may characterize a subset of human nonlymphocytic neoplasia.

Adult↗

Transposition of breakpoint cluster region (3' bcr) in CML cells with variant Philadelphia translocations.

A probe derived from the 3' end of the CML breakpoint cluster region (bcr) was localized in chronic myelocytic leukemia (CML) cases with complex Philadelphia translocations, [t(8;9;22)(q13;q34;q11) and t(12;9;22)(p11;q34;q11)], and with "masked" Ph chromosomes, [t(9;5;22)(q34;q31;q11) and t(9;22)(q22;q34)], by a chromosomal in situ hybridization technique. In some cases, the 3' bcr rearrangements in the DNA were examined with Southern blot analysis. In each case, a significant accumulation of grains hybridized to the 3' bcr probe was observed at chromosomal segments derived from the long arm of a chromosome #22. In some cases, the accumulation of grains was detected on both translocated segments derived from the 22q and terminal portions of Ph chromosomes; Southern blot analysis revealed that breakage in chromosome #22 occurred within DNA sequences of the 3' bcr probe involved in the Ph translocations. In a CML cell line, K562, no accumulation of grains hybridized to the 3' bcr probe was detected, except at 22q11 of the normal chromosomes #22; Southern blot analysis of this cell line revealed that the 3' bcr sequences were missing. Thus, the data presented here suggest a complexity in the formation of "masked" Ph chromosomes.

Chromosome Banding↗

Acute myelomonocytic leukemia with double minute chromosomes and a normal karyotype.

A case of acute myelomonocytic leukemia in a 74-year-old male patient is described whose bone marrow cells had a normal male karyotype but with double minutes chromosomes (DM). The patient had no history of exposure to mutagenic or carcinogenic agents, or a history of other malignancies. The clinical and etiologic implications of DM as a sole karyotypic anomaly in the leukemic cells are discussed.

Aged↗

Histocompatibility antigens in primary biliary cirrhosis.

HLA-A, -B, and -DR antigens were examined in 71 patients with primary biliary cirrhosis (PBC) enrolled in a randomized, double-blind trial of colchicine versus placebo. All patients had typical laboratory and histological features of PBC, except that six had a negative test for antimitochondrial antibody. Frequencies of these antigens were compared with the international Caucasian panel of the Eighth International Workshop and with a local Caucasian panel. Antigen frequencies were compared using the chi 2 test, with a correction for the number of antigens tested. The PBC patients had a significant excess of DR4 (29 of 70 typed, or 41.1%) compared to the international (804 of 3811, or 21.1%, corrected p value less than 0.05) but not the local panel (47 or 129, or 36.4%). Of PBC patients, 52.9% had only one DR antigen identified, compared to 67.5% for the international panel and 49.6% for the local panel. In past studies, the HLA antigen most strongly correlated with PBC was DR8, but this was not included in our panel of antisera. However, no significant relationship between HLA and PBC was found among the antigens screened.

Colchicine↗