Parenteral S-adenosyl-methionine (SAMe) in depression: literature review and preliminary data.
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Antidepressive Agents↗
Biomedical subjects
E Altman
Publications and source records attributed to E Altman.
Structure of the capsular polymer of Actinobacillus pleuropneumoniae serotype 6.
The capsular polymer of Actinobacillus pleuropneumoniae serotype 6 (ATCC 33590) was investigated by methylation, dephosphorylation, partial hydrolysis, and 1H- and 13C-n.m.r. methods. It was found to be a high-molecular-weight polymer composed of triglycosylglycerol phosphate repeating-units joined through monophosphate diester linkages, and has the structure: (formula; see text).
Actinobacillus↗
Structure of the O-antigen polysaccharide of Haemophilus pleuropneumoniae serotype 3 (ATCC 27090) lipopolysaccharide.
The structure of the O-antigen polysaccharide of Haemophilus pleuropneumoniae serotype 3 (ATCC 27090) S-type lipopolysaccharide was investigated by methylation analysis, partial hydrolysis, periodate oxidation, and 1H- and 13C-n.m.r. spectroscopy, and concluded to be composed of linear pentasaccharide repeating-units having the structure: [----3)-alpha-D-Glcp-(1----2)-beta-D-Galf-(1----6)-alpha-D-Galp-(1 ----6)- beta-D-Glcp-(1----3)-beta-D-Galf-(1----]n.
Antigens, Bacterial↗
Communication of adults with learning disabilities: self and others' perceptions.
This study investigated perceptions of the communication performance of 31 young adults with severe learning disabilities enrolled in a vocational-education program. Communication assessment questionnaires, designed to rate communication skills of these students, were completed by the students themselves and vocational educators. These questionnaires included items in the areas of comprehension, verbal expression, social communication, and problem solving. Overall, the students' perceptions of their own communication performance were remarkably similar to those of the vocational educators. However, students perceived their communicative performance as less problematic than did others. Of the four areas pertinent to communication, students and vocational educators perceived problem solving as most difficult. Implications of these findings are discussed with reference to the development of assessment procedures for adults with learning disabilities.
Adolescent↗
S-adenosylmethionine in depression. A literature review and preliminary report.
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Adult↗
Structure of the capsular polysaccharide of Haemophilus pleuropneumoniae serotype 5.
The capsular polysaccharide of Haemophilus (Actinobacillus) pleuropneumoniae serotype 5 (ATCC 33377) was found to be a linear type polysaccharide of a repeating disaccharide unit composed of 2-acetamido-2-deoxy-D-glucose and 3-deoxy-D-manno-2-octulosonic acid (dOclA). By composition analysis, methylation, partial hydrolysis and 1H and 13C nuclear magnetic resonance studies, it was concluded that the capsular polysaccharide is a high-molecular-mass unbranched polymer having the structure: [6)-alpha-D-GlcNAcp-(1-5)-beta-dOclAp-(2]n.
Carbohydrates↗
Structure of the capsular polysaccharide of Escherichia coli O9:K32(A):H19.
The capsular polysaccharide of the bacterium Escherichia coli O9:K32(A):H19 was analyzed using chemical methods (hydrolysis, sequential Smith degradation, methylation analysis) together with 1H- and 13C-n.m.r. spectroscopy. 13C-N.m.r. spectroscopy and chemical analyses indicated that the K32 polysaccharide is composed of equimolar proportions of glucose, galactose, rhamnose, and glucuronic acid, and carries O-acetyl groups. 1H-N.m.r. analysis of native K32 polysaccharide revealed five resonances in the anomeric region (delta 5.52, 5.16, 5.12, 5.02, and 4.73) and the presence of an acetyl group (delta 2.18). O-Deacetylation of the polysaccharide resulted in the loss of the resonance at delta 2.18 and one of the resonances (delta 5.52) in the anomeric region. The "extra" anomeric resonance in the 1H-n.m.r. spectrum of the native K32 polymer was assigned to H-2 of rhamnose, which experiences a large downfield shift when the 2-position is O-acetylated. This was confirmed by a 2D-COSY n.m.r. experiment and studies of model compounds. The K32 capsular polysaccharide is of the "2 + 2" type, comprised of the following repeating unit: (sequence; see text) This structure is identical to that of Klebsiella K55 capsular polysaccharide.
Carbohydrate Conformation↗
Structural studies of the capsular polysaccharide from Haemophilus pleuropneumoniae serotype 2.
The capsular polysaccharide of Haemophilus pleuropneumoniae serotype 2 (ATCC 27089) is composed of D-glucose (two parts), D-galactose (one part), glycerol (one part), and phosphate (one part). Hydrolysis, dephosphorylation, methylation, enzymic studies, and 1H and 13C nuclear magnetic resonance experiments showed that the polysaccharide is a high molecular weight polymer of a tetrasaccharide repeating units, linked by monophosphate diester and having the following structure: (Formula: see text).
Chromatography, DEAE-Cellulose↗
Structural studies of the O-chain of the phenol-phase soluble lipopolysaccharide from Haemophilus pleuropneumoniae serotype 2.
The phenol-phase soluble cellular lipopolysaccharide that was isolated by the phenol-water extraction from Haemophilus pleuropneumoniae serotype 2 was shown to be of the S type by sodium dodecyl sulfate--polyacrylamide gel electrophoresis, hydrolysis, methylation, specific degradations, and both one- and two-dimensional 1H and 13C nuclear magnetic resonance studies. It could be cleaved to yield a lipid A and an O-chain polysaccharide. This O-polysaccharide was identified as a high molecular weight unbranched linear polymer of a pentasaccharide repeating unit having the structure: (Formula: see text).
Haemophilus↗
Structure of the capsular polysaccharide of Haemophilus pleuropneumoniae serotype 3.
The capsular polysaccharide of Haemophilus pleuropneumoniae serotype 3 (ATCC 27090) is composed of D-galactose (one part), 2-acetamido-2-deoxy-D-glucose (one part), glycerol (one part), and phosphate (one part). From hydrolysis, dephosphorylation, methylation, and 1H and 13C nuclear magnetic resonance studies, the polysaccharide was found to be a high molecular weight polymer of a repeating trisaccharide unit, joined through monophosphate diester linkages and having the following structure: (formula; see text).
Animals↗
Response of psychotic and nonpsychotic depressed patients to tricyclic antidepressants.
The response to tricyclic antidepressants (TCAs) is studied in 75 of 121 depressed patients classified as psychotic or nonpsychotic subtypes by Research Diagnostic Criteria. Response was assessed by a clinical global evaluation scale. Of the 75 patients treated with TCAs, 40 (68%) of the nonpsychotic subtype responded in contrast to only 4 (25%) of the psychotic subtype. Adjusting for the effects of chronicity, sex, age, incapacity, agitation, retardation, endogenicity, and the unipolar-bipolar distinction as covariates, it was found that these variables failed to alter the differential response rate of the psychotic and nonpsychotic depressed groups. A literature review of 1054 patients revealed that 67% of the nonpsychotic depressed patients responded to TCAs compared with only 35% of the psychotic depressed patients.
Antidepressive Agents, Tricyclic↗
An analysis of 1539 patients with cancer of unknown primary site.
A retrospective review of 1539 patients with cancer of unknown primary site seen at Yale-New Haven Hospital from 1922 to 1981 was performed. Information was obtained from the Tumor Registry. The method of diagnosis, patient characteristics, year of diagnosis, histologic features, treatment received, and survival were analyzed. The most common cell type was adenocarcinoma. Survival overall was poor, with a median survival of 5 months for the entire group. Age and year of diagnosis did not appear to significantly influence survival. Closer examination of a small subset of those patients with squamous cell carcinoma revealed a very high male:female ratio, possibly related to tobacco and alcohol abuse. Nearly 9% of these patients were found to have a history of one or more unrelated malignancies.
Adenocarcinoma↗
Structural studies of the capsular polysaccharide from Haemophilus pleuropneumoniae serotype 1.
The capsular polysaccharide of Haemophilus pleuropneumoniae serotype 1 (ATCC 27088) was found to be a teichoic acid type polysaccharide of a repeating disaccharide unit composed of 2-acetamido-2-deoxy-D-glucose and D-galactose units. By composition analysis, methylation, partial hydrolysis, dephosphorylation, and one- and two-dimensional 500-MHz proton nuclear magnetic resonance experiments, together with 13C nuclear magnetic resonance studies, it was concluded that the capsular polysaccharide is a high molecular weight linear polymer having the structure: (Formula: see text)
Chemical Phenomena↗
Structure of the O-chain of the lipopolysaccharide of Haemophilus pleuropneumoniae serotype 1.
By phenol-water extraction an aqueous-phase soluble cellular lipopolysaccharide was isolated from Haemophilus pleuro-pneumoniae serotype 1. It was shown by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, hydrolysis, methylation, and both one- and two-dimensional 1H and 13C nuclear magnetic resonance studies to be an S-type lipopolysaccharide, which could be cleaved to yield a lipid A and an O-chain polysaccharide identified as a high molecular weight branched polymer of a tetrasaccharide repeating unit having the structure: (Formula: see text).
Acetylation↗
Failure of urinary MHPG levels to predict treatment response in patients with unipolar depression.
The authors studied 64 depressed patients who were receiving a vanillylmandelic acid (VMA)-free diet and underwent a washout period (mean, 24 days) before treatment. During the washout period, a mean of 2.5 multiple 24-hour urinary 3-methoxy-4-hydroxyphenylglycol (MHPG) samples per patient were collected. Thirty-four patients were then treated with a "noradrenergic" antidepressant only (e.g., imipramine), and seven were treated with a "serotonergic" antidepressant only (e.g., amitriptyline). Twelve patients received combined drug treatment and 11 others spontaneously remitted. Response to treatment was rated on a clinical global evaluation scale from 1 (little or no response) to 7 (maximum response). No relationship was found between response to treatment, type of treatment, and the average pretreatment 24-hour urinary MHPG level. The authors thus failed to confirm the hypothesis that a low MHPG level predicts response to antidepressant treatment.
Adult↗
Chemical and structural analysis of the capsular polysaccharide from Escherichia coli O9:K28(A):H- (K28 antigen).
The structure of the capsular polysaccharide from Escherichia coli O9:K28(A):H- (K28 antigen) has been determined by using the techniques of methylation, periodate oxidation, and partial hydrolysis. N.m.r. spectroscopy (1H and 13C) was used to establish the nature of the anomeric linkages. O-Acetyl groups were determined spectrophotometrically and were located using methyl vinyl ether as a protective reagent. The polysaccharide is comprised of repeating units of the tetrasaccharide shown (three-plus-one type) with 70% of the fucosyl residues carrying an O-acetyl substituent. (formula; see text) This structure resembles that of E. coli K27 and has the structural pattern of Klebsiella K54 polysaccharide.
Carbohydrate Conformation↗
Subcellular localization of lethal lysis proteins of bacteriophages lambda and phiX174.
The gene products of the lethal lysis genes S and E of the bacteriophages lambda and phiX174, respectively, were shown to be associated primarily with inner membrane material by isopycnic sucrose gradient centrifugation of lysates of infected cells. A small amount of each polypeptide appeared to be in the outer membrane fraction.
Bacteriolysis↗
Nutritional support in a general urological service.
A nutritional support team was used in the assessment and management of patients on a general urological service. Indications for nutritional evaluation included history of weight loss, anorexia, significant infection, chronic neoplastic disease, trauma or major surgery. The fat and protein status of the patient was assessed by anthropomorphic and laboratory determinations. The patient then was categorized as having mild, moderate or severe degrees of nutritional depletion. Deficiencies in vitamins, trace elements or essential fatty acids were not noted. Caloric and protein needs were calculated by multiplication of the basal energy expenditure by a metabolic activity factor, which was derived from the degree of illness or stress. Nutritional support was provided by enteral feedings via oral, nasogastric or jejunal feeding tubes and/or intravenous hyperalimentation via peripheral or central venous nutrient lines. During a 6-month interval nutritional consultation was requested for 50 patients, who represented 7 per cent of the urological admissions. Nutritional support was provided for patients who had obstructive uropathy with or without neoplasms, radiation cystitis, sepsis, urinary fistulas, mental depression, end stage renal disease or neurological dysfunction. In patients in whom urological treatment controlled the disease nutritional support maintained the weight, and stabilized serum albumin and lymphocyte counts. We concluded that a nutritional support program has a significant and, often, unappreciated role in the management of urological patients.
Aged↗