Search PubMed⌕ Search

Biomedical subjects

R Rosenthal

Publications and source records attributed to R Rosenthal.

At least 91 records · Page 5Linked to original sources
PubMed1984

Effects of psychotherapy in schizophrenia: I. Design and implementation of a controlled study.

This article describes a 2-year, multi-hospital study on the effects of psychotherapy for nonchronic schizophrenic patients. The design and methods used to evaluate the relative benefits of exploratory, insight-oriented (EIO) psychotherapy and reality-adaptive, supportive (RAS) psychotherapy when both are provided by experienced therapists against the backdrop of good hospital and psychopharmacological management are presented. Similarities and differences between the two therapies and the therapists are outlined. Special attention is given to the problems in implementing research on long-term psychotherapy. Finally, the strengths and limitations of the present study are discussed.

Adult↗
PubMed1983

Hemispheric specialization in nonverbal communication.

Subjects sustaining right hemisphere damage were impaired in the ability to evaluate emotional situations presented through nonverbal means, particularly through facial expressions. Left brain damage, even of considerable extent, led to significantly milder deficits. In agreement with these findings, a study in split-brain patients showed the isolated right hemisphere to be competent in evaluating facial expressions but less sensitive to body movements, while the left hemisphere showed the opposite pattern.

Adult↗
PubMed1982

The biosynthesis and processing of high molecular weight precursors of soybean glycinin subunits.

The predominant storage protein of soybean seed, glycinin, is composed of two heterogeneous classes of related subunits, the acidics (Mr approximately 38,000) and the basics (Mr approximately 22,000). Immunoreaction of polypeptides translated in vitro from isolated seed mRNA using antibodies prepared against either purified acidic or basic subunit groups precipitated precursor polypeptides of Mr = 60,000 to Mr = 63,000. High pressure liquid chromatography fingerprinting of trypsin-generated fragments from in vitro synthesized precursors showed fragments specific to both acidic and basic subunits. No mature acidic or basic subunits were detected in vitro translation reactions by either immunoprecipitation or high pressure liquid chromatography fingerprinting. Pulse-labeling of cotyledons growing in culture with [3H]glycine showed rapid accumulation of label in glycinin precursors of Mr = 59,000 to Mr = 62,000. Although in vivo synthesized precursors had slightly greater electrophoretic mobility than in vitro synthesized precursors, little label initially appeared in mature glycinin subunits. After several hours of continued cotyledon growth in absence of label, precursors were processed and label accumulated in both acidic and basic subunit groups. Recombinant plasmids were prepared by reverse transcription of soybean seed mRNA, and clones which encode glycinin precursors were identified by heteroduplex-hybridization of translatable messages. Northern blot analysis of seed mRNA shows the mRNA-encoding glycinin precursors to migrate at Mr = 0.71 X 10(6) on agarose gels, corresponding to approximately 2050 nucleotides. This is sufficiently large to encode a polypeptide consisting of both a glycinin acidic and basic subunit.

Chromatography, High Pressure Liquid↗
PubMed1982

Progressive heart failure and death associated with Mycoplasma pneumoniae pneumonia.

A case of progressive CHF and death associated with serologically confirmed Mycoplasma pneumoniae pneumonia in a previously healthy man is described. The association between the organism and significant cardiac or pericardial dysfunction discussed, the literature reviewed, and speculation made as to the underlying pathophysiologic mechanisms.

Adult↗
PubMed1981

Defective specialized SP beta transducing bacteriophages of Bacillus subtilis that carry the sup-3 or sup-44 gene.

We isolated defective specialized transducing phages of SP beta that carry one of the extracistronic suppressors, sup-3 or sup-44. Lysates containing these phages can be used in a simple spot test to determine whether an auxotrophic mutation can be suppressed. The sup-3 and sup-44 mutations are distinct, in that their suppression patterns differ for the markers hisA1, metC3, and thr-5; and they are not alleles.

Bacillus subtilis↗
PubMed1981

Coordinate regulation of two cytoplasmic RNA species transcribed from early region 2 of the adenovirus 2 genome.

Early region 2 (E2) of the adenovirus 2 genome specifies a 72,000-dalton DNA-binding protein that is required for viral DNA replication. Electron microscopy studies have detected two major forms of 20S E2 mRNA, one species with a 5' leader from map position 75 and a second form having a leader from position 72 (Chow et al., J. Mol. Biol. 134:265-303, 1979). Only the species with a leader from position 75 was detected at early times; however, both forms were found at late times. We have analyzed the temporal regulation of E2 expression by documenting mRNA accumulation in the cytoplasm. Kinetic studies of pulse-labeled RNAs demonstrated a peak of E2 cytoplasmic RNa synthesis at 10 to 12 h, coinciding with the time of maximal synthesis of the 72,000-dalton DNA binding protein and viral DNA. To estimate the relative abundances of the two major E2 RNA species at various times during infection, total E2 cytoplasmic and polysomal 20S RNAs were isolated by hybridization-selection with specific DNA probes. The leader sequences in the selected RNAs were then quantitated by further RNA-DNA hybridization. We found that the elevated accumulation rate for E2 cytoplasmic RNA at late times reflected an increase in formation of both major species. Moreover, for all time points examined 66% of the mRNA species had a 5' end from map position 75, and 33% had a 5' terminus from position 72. Continuous labeling experiments provided evidence that both RNA forms have comparable half-lives. The results suggest that the two major species encoded by E2 are regulated in a coordinate fashion late in infection.

Adenoviruses, Human↗
PubMed1981

Clinical presentation and non-invasive diagnosis of right heart masses.

Right-sided cardiac masses do not have a uniform clinical presentation. Successful diagnosis is dependent on a high index of suspicion and appropriate echocardiographic examination. Five cases of right sided intracardiac masses have been detected during the period that echocardiography has been routinely available to us--two of right atrial myxoma, one of right atrial thrombus, and two of right ventricular tumour. M-mode echocardiography identified four of the five cases. Two-dimensional echocardiography was necessary to establish the non-invasive diagnosis in the fifth case. Echocardiography should be used in any patient in whom a right sided mass is suspected, or in those patients presenting with signs of tricuspid regurgitation, tricuspid stenosis, pulmonary stenosis, cyanotic heart disease, progressive right heart failure, constrictive pericarditis, or pulmonary emboli without obvious source.

Adult↗
PubMed1981

Quantitative thallium-201 redistribution with a fixed coronary stenosis in dogs.

The redistribution of thallium-201 (201Tl) after coronary vasodilation was studied in 14 dogs with a proximal stenosis of the left circumflex coronary artery that did not reduce basal flow but attenuated reactive hypermia. During an 8-10-minute i.v. infusion of adenosine, radioactive microspheres and 201Tl were injected into the left atrium. Sequential cardiac scintiscans and microsphere injections permitted subsequent determination of coronary blood flow during the redistribution of 201Tl. After 15-220 minutes of observation, the dogs were killed and the hearts removed for the measurement of the activity of 201Tl and the radioactive microspheres in the normal (left anterior descending coronary artery [LAD]) and flow-restricted (left circumflex coronary artery [LCX]) regions. The ratios of the activity in LAD/LCX for microspheres (TRmic) and for 201Tl (RT1) were compared with the activity ratio determined from the scintiscan (Rscan). Rmic for the microsphere simultaneously injected with 201Tl can be compared with the initial Rscan, which showed a significant hourly decrease from an initial value of 1.26 +/- 0.12 to a mean final value of 1.02 +/- 0.09 by 3-4 hours. The final Rscan (mean 1.07 +/- 0.10) in each experiment also correlated significantly (r = 0.854) with the final true myocardial RT1 (mean 1.26 +/- 0.25). Rscan underestimated Rmic (average 2.25 +/- 0.48) when both 201Tl and microspheres were simultaneously injected; Rscan also underestimated RT1, but the directional changes were similar. A further analysis of the Rmic, Rscan and RT1 in two groups of dogs with either relatively high or low coronary flow during adenosine infusion suggests that the net loss of cellular 201Tl from the normal scintigraphic area is the mechanism underlying the resolution of these initial defects.

Adenosine↗
PubMed1980

Manual extraction of a permanent pacemaker: an attempted suicide.

An unusual case of a patient-related pacemaker malfunction is presented. In a suicide attempt the patient manually extracted a subcutaneously implanted permanent pacemaker. This shocking example of pacemaker manipulation by a patient raises the question of the need for more routine of protected sites for pacemaker implantation.

Aged↗
PubMed1980

Establishment and maintenance of persistent infection by Sindbis virus in BHK cells.

We have established a persistent infection of BHK cells with a preparation of Sindbis virus heavily enriched in defective interfering (DI) particles. The small fraction of cells that survived the initial infection grew out to form a stable population of cells [BHK(Sin-1) cells], most of which synthesized viral RNA and viral antigens. The presence of DI particles in this virus stock was required to establish this persistent state. BHK(Sin-1) cells released a small-plaque, temperature-sensitive virus (Sin-1 virus) as well as DI particles containing DI RNAs larger than those present in the original stock used to establish the persistent state. A cloned stock of Sin-1 virus, free of detectable DI particles, was able to initiate a persistent infection more quickly and with greater cell survival than the original stock of Sindbis virus containing DI particles. About 2 weeks after the Sin-1 virus-infected cells were cultured, DI RNAs arose and soon became the dominant viral RNA species produced by these cells.

Animals↗