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Biomedical subjects

S Rosenthal

Publications and source records attributed to S Rosenthal.

At least 91 records · Page 5Linked to original sources
PubMed1985

Molecular cloning of integrated proviral DNA of bovine leukaemia virus from virus-producing foetal lamb kidney cells.

Over 90% of the total viral information together with the adjacent 5' cellular sequences were cloned in the lambdoid spi selection vector lambda-2558 by taking advantage of the unique EcoRI restriction site very close to the 3' long terminal repeat. Of the fifteen isolated recombinant phages with viral inserts, one has been propagated and its DNA isolated and subjected to preliminary restriction endonuclease analysis. The proviral insert has been found to be almost identical to the unintegrated proviral DNA reported by Kashmiri et al. (1984).

Animals↗
PubMed1984

Studies in the differentiation between Microsporum ferrugineum Ota and Trichophyton soudanense Joyeux.

A study, conducted with 20 isolates of Microsporum ferrugineum and 12 isolates of Trichophyton soudanense, revealed that some of the discrepancies in the literature regarding their characteristics and differentiation were due to methodology, strain variation and the use of an insufficient number of isolates. We found all isolates of T. soudanense to be urease negative and gelatinase positive (usually by the first week); to produce brown to black colonies on Lowenstein-Jensen medium; to rapidly decompose casein and more slowly tyrosine; to grow well or better at 37 degrees C as compared to room temperature; to produce reflexive branching on cornmeal Tween agar and abundant microconidia on casero medium and to exhibit no sexual reaction with either mating type of arthroderma simii. All but one isolate demonstrated restricted growth on lactose agar and only three isolates perforated hair. In contrast, we found 18 of 20 isolates of M. ferrugineum to be urease positive in urea broth (most isolates were negative on urea agar); all produced light-colored colonies on Lowenstein-Jensen medium; spreading colonies on lactose agar and failed to perforate hair in vitro or to produce reflexive branching. Most isolates manifested poorer to no growth at 37 degrees C compared to room temperature and all but one failed to decompose casein and tyrosine. A few strains produced macroconidia and/or microconidia on casero medium and some reacted sexually with A. simii (a) (-) mating type. Gelatin hydrolysis was variable.(ABSTRACT TRUNCATED AT 250 WORDS)

Culture Media↗
PubMed1984

Long-term survival of patients with treated aortic dissection.

Retrospective data on the treatment of aortic dissection at the Massachusetts General Hospital from 1963 to 1978 are reported. During this period, 160 patients with spontaneous aortic dissection were treated by definitive medical or definitive surgical therapy. Patients were classified according to type (proximal versus distal) and duration (acute versus chronic) of dissection. Long-term follow-up (mean 48 months, range 1 to 147) was available in 156 cases. Hospital and late survival in each of the categories of dissection were evaluated in relation to those features of the dissection itself and of the subsequent therapy that correlated with ultimate survival. Results show that: 1) chronic presentation was the most significant determinant of both hospital and late survival; 2) in acute dissection, prognosis was determined largely by the presence or absence of major complications, regardless of ultimate therapy; the only complication without adverse effect on survival was aortic insufficiency; 3) late survival after discharge from the hospital was similar for patients with all types of dissection and modes of therapy; and 4) the incidence of late complications from aortic dissection was lower than previously reported. Thus, the success of early definitive medical and surgical treatment was sustained on long-term follow-up.

Acute Disease↗
PubMed1984

Suicidal behavior by preschool children.

Sixteen suicidal preschoolers age 21/2 to 5 years who were referred to a university child psychiatry outpatient clinic were compared with 16 behaviorally disordered preschoolers matched by age, sex, race, and parental marital and socioeconomic status. The suicidal group showed significantly more nonsuicidal self-directed aggression, loss of interest, morbid ideas, depression (according to the Weinberg criteria, but not DSM-III), impulsivity and hyperactivity, and running away behavior. They also showed significantly less pain and crying after injury; more of the children were unwanted and abused or neglected by parents. Four subgroups of suicidal motivation are identified and discussed.

Accidents↗
PubMed1984

Double-blind placebo-controlled multicenter evaluation of the efficacy and safety of nomifensine in depressed outpatients.

Outpatients with primary affective disorder-depression who scored at least 20 on the Hamilton Depression Rating Scale (HDRS) were randomly assigned to treatment for 1 month with nomifensine (100-200 mg/day) or placebo. Clinical laboratory and physical evaluations, including ECGs when feasible, revealed no clinically significant changes over the course of treatment. Nomifensine patients showed improvement compared to placebo on the HDRS total score endpoint analysis (p = .06) and the Cognitive Disturbance and Retardation factors (p less than or equal to .05). A better rate of improvement was seen with nomifensine on the Clinical Global Impressions severity of illness (p less than or equal to .05) and therapeutic index (p less than or equal to .05) components. No differences were seen between groups in the incidence of overall or specific side effects. Nomifensine thus appeared safe and superior to placebo on several key measures of depressive symptomatology in this multicenter study of depressed outpatients.

Administration, Oral↗
PubMed1984

Carp preproinsulin cDNA sequence and evolution of insulin genes.

The nucleic acid sequence of the preproinsulin cDNA of carp (Cyprinus carpio), cloned in the PstI site of pBR322 ( Liebscher et al. 1980), has been determined. The sequenced insert of 439 bp includes the complete coding information for carp preproinsulin (108 amino acids), 10 nucleotides of the 5'-and 105 nucleotides of the 3'-nontranslated regions. The nucleotide sequence confirms the previously established amino acid sequence of carp insulin ( Makower et al. 1982) and determines those of the signal 21 amino acids and C peptide (35 amino acids). The observed shortness of the signal peptide of carp preproinsulin and the N-terminal addition of 2 amino acids to the carp insulin B chain suggest that the cleavage site of the signal peptidase has moved. Calculations based on the comparison of known preproinsulin cDNA sequences showed that the evolutionary distance between fresh water and salt water teleostians is not smaller than that between man and chicken.

Amino Acid Sequence↗
PubMed1983

Carp preproinsulin cDNA sequence and evolution of insulin genes.

The nucleic acid sequence of the preproinsulin cDNA of carp (Cyprinus carpio), cloned in the PstI-site of pBR322 (1), has been determined. The sequenced insert of 439 bp includes the complete coding information for carp preproinsulin (108 amino acids), 10 nucleotides of the 5'-and 105 nucleotides of the 3'-nontranslated regions. The nucleotide sequence confirms the previously established amino acid sequence of carp insulin (2) and determines those of the signal (21 aa 1) and C-peptide (35 aa 1). The observed shortness of the signal peptide of carp preproinsulin and the N-terminal addition of 2 amino acids to the carp insulin B-chain suggest that the cleavage site of the signal peptidase has moved. Calculations based on the comparison of known preproinsulin cDNA sequences showed that the evolutionary distance between fresh water and salt water teleostians is not smaller than between man and chicken.

Amino Acid Sequence↗
PubMed1983

Relation of segmental wall motion to global left ventricular function in acute myocardial infarction.

The relation of left ventricular regional wall motion to global ventricular function was evaluated by radionuclide ventriculography in 127 patients within 18 hours of acute myocardial infarction. No patient had evidence of previous myocardial infarction. The following parameters were measured: (1) wall motion index; (2) percent of abnormally contracting segment; (3) ejection fraction (EF); (4) end-diastolic volume (EDV) and end-systolic volume (ESV); and (5) peak systolic cuff pressure/end-systolic volume ratio (PSP/ESV). The measurements of global function correlated well with wall motion index (r = 0.83, p less than 0.001 for EF; r = -0.69, p less than 0.001 for ESV; and r = 0.061, p less than 0.001 for PSP/ESV), but EDV correlated less well (r = -0.35, p less than 0.001). Multiple linear regression analysis revealed that EF correlated best with wall motion index, and no other parameters of global left ventricular function added significantly to the regression. The correlation of motion in each segment with EF was determined by multiple linear regression analysis. Ejection fraction correlated best with motion in the anterobasal, then in order of correlation, in the apical-septal, inferoapical, anterolateral, and superlateral walls. The relation of EDV, ESV, and degree of percent abnormally contracting segments was as follows: EDV did not increase with a mild regional wall motion abnormality; however, ESV did increase and reduced stroke volume. As percent abnormally contracting segments worsened, enlargement of both EDV and ESV was seen and was associated with further reduction in systolic volume. These data suggest that EF is the best global left ventricular function correlate of the severity of the regional wall motion abnormality, and that abnormal motion in the territory of the left anterior descending coronary best predicts reduction in global left ventricular function. Radionuclide ventriculography is useful in characterizing global and regional left ventricular function in the early hours of acute myocardial infarction.

Aged↗
PubMed1983

Managing risks.

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Insurance, Liability↗
PubMed1982

Carp insulin: amino acid sequence, biological activity and structural properties.

The amino acid sequence of insulin of carp (Cyprinus carpio) has been determined and correlated with its biological activity in a fat-cell test and its structural properties as measured by circular dichroism and sedimentation analysis. The amino acid sequence of carp insulin displays some unusual features: the B chain is longer at the N terminus by two residues as compared with mammalian insulins and there are substitutions of the charged residues, found in most insulins at positions B21 and B22, by proline and threonine respectively. On the other hand, all amino acid residues essential for biological activity and for the association of insulin monomers are the same in carp insulin. Accordingly, the half-maximal response in a fat-cell test is reached with carp insulin at concentrations which are only three times higher than with porcine insulin and the maximal response is the same. The circular dichroism spectrum of carp insulin resembles greatly that of bovine insulin indicating that it has a similar spatial structure. Despite amino acid substitutions in the dimer-dimer contact region, carp insulin is able to form hexamers.

Adipose Tissue↗
PubMed1982

Detection of bovine leukaemia virus RNA sequences in non-cultivated peripheral lymphocytes by in situ hybridization with 3H-labelled viral cDNA.

Bovine leukaemia virus (BVL) in circulating lymphatic cells of the blood is repressed and has to be activated for its expression. After in situ hybridization of BLV-3HcDNA with a specific activity of 3.9 X 10 dpm/micrograms to noncultivated blood cells from 5 leukotic cattle, in 4 of these animals from 0.96% to 1.5% lymphocytes were found to contain BLV-specific RNA sequences. Non-hybridized lymphocytes as well as calf thymus cells, used as controls, gave only 0.47% and 0.39% labelled cells, respectively. After short-term cultivation of white blood cells from these leukotic animals the percentage of labelled cells increased. During the short-term cultivation the number of hybridizing cells from one and the same animal and from all animal, when compared with each other, varied to a high extent. The highest values of BLV-RNA sequences-containing cells from all 5 animals at different cultivation times were within the range of from 2.4 to 16.2%.

Animals↗
PubMed1982

Bilateral endogenous necrotizing scleritis due to Aspergillus oryzae.

A case of bilateral necrotizing scleritis due to Aspergillus oryzae is reported. The patient was a former addict of intravenous narcotics treated five years previously for meningitis due to the same organism. A seeding focus in the thoracic spine was eventually found. The patient responded well to combined local and systemic therapy with amphotericin B, flucytosine, and natamycin. This represents, to the best of our knowledge, both the first reported case of ocular disease due to this species of Aspergillus and of isolated scleral, nonintraocular involvement in endogenous oculomycosis.

Adolescent↗
PubMed1982

Treating the depressed elderly patient: the comparative behavioral pharmacology of mianserin and amitriptyline.

MIA is an effective antidepressant, comparable in therapeutic efficacy to the TCAs. Further, because of its weak antimuscarinic effects. Further, because of its weak antimuscarinic effects, MIA produces no significant cognitive impairment, alteration of cardiovascular function of anticholinergic side effects compared to the TCA's. While drowsiness is the most frequently reported adverse reaction with MIA, an h.s. dosing schedule can provide relief of insomnia and improve the quality of sleep (47,61). Therefore, because of MIA's advantageous pharmacodynamic profile, it offers an improvement in therapeutic index over the TCAs in the treatment of depression in the elderly.

Aged↗
PubMed1981

Electron microscopic evidence of circular molecules in 9-S globin mRNA from rabbit reticulocytes.

9S globin mRNA prepared by the proteinase K method from polysomes of rabbit reticulocytes consists of 40% circular molecules as revealed by electron microscopy, if spreading of the molecules is performed from a solution of 50% formamide, 0.5 M NaCl, 25 mM Tris, 10 mM EDTA, pH 8, after 16 h incubation at 42 degrees C. We assume a noncovalent nature of the circularization because of the fact that a total transformation into the well known linear form occurs if strong denaturing conditions for spreading were used. The biological significance of the circular globin mRNA molecules is unknown.

Animals↗
PubMed1981

Sebaceous adenomas and keratoacanthomas in a patient with malignant lymphoma. A new form of Torre's Syndrome.

A women with non-Hodgkin's lymphoma developed numerous sebaceous adenomas over the face, neck, and trunk. The association of multiple sebaceous adenomas with underlying visceral malignancy was first described by Torre in 1968 and is known now as Torre's syndrome. The present case, to the best of our knowledge, is the first report of hematologic malignancy associated with Torre's syndrome.

Adenoma↗