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P Fort

Publications and source records attributed to P Fort.

119 records · Page 7Linked to original sources
PubMed1984

Nucleotide sequence of sporulation locus spoIIA in Bacillus subtilis.

We have determined a sequence of 2073 bp from two recombinant plasmids carrying the whole spoIIA locus from Bacillus subtilis, the expression of which is required for spore formation. The sequence contains three long open reading frames (ORFs), each of them being preceded by a ribosome binding site. These three putative proteins (mol. wts 13100, 16300 and 22200) are likely to be expressed and are probably encoded on the same mRNA. The stop codon of ORF1 overlaps with the start codon of ORF2 suggesting that there might be translational coupling between the two ORFs. Although some known promoter sequences were found, the only one upstream from the first open reading frame is about 260 bp from it.

Bacillus subtilis↗
PubMed1983

Fear of obesity. A cause of short stature and delayed puberty.

We evaluated 201 children for short stature or delayed puberty or both. Fourteen of them (nine boys and five girls, aged 9 to 17 years) fit a pattern of growth failure due to malnutrition, which was the result of a self-imposed restriction of caloric intake arising from a fear of becoming obese. All 14 patients underwent a complete history, physical examination, diagnostic laboratory evaluation, and psychiatric assessment. They were all below the fifth percentile for weight, and 11 of them were also below the fifth percentile for height. The deficit of weight for height ranged from 5 to 23 per cent. Seven of the older patients also had delayed puberty. All 14 patients had deteriorating linear growth, which was preceded by at least one to two years of inadequate weight gain. They ingested only 32 to 91 per cent of the recommended caloric intake for their age and frequently skipped meals. No gross psychiatric disease or anorexia nervosa was found; on the whole, they were good students with rather compulsive, shy personalities observed in an open-ended interview. The Diagnostic Interview for Children and Adolescents, which was conducted with seven patients, also revealed no psychiatric disease. After nutritional and psychiatric counseling, the patients resumed an adequate caloric intake for their age, and recovery occurred, as demonstrated by increased linear growth and sexual development.

Adolescent↗
PubMed1982

A warning on the use of synthetic DNA primers for initiation of reverse transcription on RNA templates: unexpected initiation at a mismatched nucleotide.

A synthetic 13-mer oligodeoxynucleotide designed to specifically initiate on lactic dehydrogenase (LDH) mRNA was shown to prime with high efficiency the synthesis of DNA complementary to the last 133 nucleotides of mitochondrial 16S ribosomal RNA on a mouse liver total poly(A)+ RNA template. One especially interesting feature of this reaction was that reverse transcriptase has been able to initiate at the 3' terminal C residue of the primer despite the fact that it was facing an A. This observation therefore establishes the ability of reverse transcriptase to initiate directly on a mismatched nucleotide.

Animals↗
PubMed1980

Low-dose insulin infusion in the treatment of diabetic ketoacidosis: bolus versus no bolus.

The effects of an initial iv bolus of insulin upon plasma glucose, blood gases, and electrolytes were assessed in 19 children with 20 episodes of diabetic ketoacidosis treated by a continuous low-dose insulin infusion of 0.1 unit/kg/hour. An iv bolus of insulin administered prior to low-dose insulin infusion accelerated the decline of plasma glucose concentration during the first hour of treatment, but differences in decline of mean plasma glucose concentration were not apparent thereafter. The mean time required for attaining "normoglycemia" (250 mg/dl) was similar, whether or not the initial bolus of insulin was given, with a smooth and predictable correction of initial hyperglycemia in the majority of children. However, an accelerated response was more frequent in those patients with compensated metabolic acidosis, who received an initial iv bolus of insulin; those with more severe metabolic acidosis took longer to recover. The data suggest that an initial iv bolus of insulin may not be required nor desirable in the majority of children with diabetic ketoacidosis treated by a standard low-dose insulin infusion regimen.

Adolescent↗
PubMed1977

Isolated thyrotrophin deficiency in diabetes mellitus.

Hypothyroidism in patients with diabetes mellitus is usually primary though rarely secondary hypothyroidism has occurred. An 11 6/12 year old white female developed diabetes mellitus at 8 6/12 years of age. She received treatment up to 40 units NPH daily with adequate control and normal growth. Hypothyroidism was diagnosed after a 3 month history of lethargy, constipation, dryness of skin and decreasing insulin requirement to 10 units NPH per day. Physical examination was entirely normal, except for dry skin. Serum levels of free thyroxine, thyroxine, T3 resin uptake, were low as was 131I uptake. Primary hypothyroidism was ruled out by the absence of goitre, absent antithyroid antibodies, low basal TSH levels and increased 131I uptake after TSH administration. Serum TSH levels rose 4-fold in respone to intravenous TRH administration. The patient was treated with 0.15 mg daily of L-thyroxine with very good response. This report describes a patient with juvenile diabetes mellitus and isolated TSH deficiency with hypothyroidism of probably hypothalamic origin, an association not previously described in children.

17-Hydroxycorticosteroids↗
PubMedDate not supplied

Forebrain afferents to the cat posterior hypothalamus: a double labeling study.

Using a double immunostaining technique with cholera toxin (CT) as a retrograde tracer, we examined the cells of origin and the histochemical nature of afferents to the cat posterior hypothalamus. After injection in the tuberomamillary nucleus, a number of CT-labeled cells were observed in: medial preoptic area, nuclei of the septum and the stria terminalis, amygdaloid complex, anterior hypothalamic, ventromedial hypothalamic and premamillary nuclei. CT injections in the lateral hypothalamic area gave an additional heavy labeling of neurons in: lateral preoptic area, nuclei of the diagonal band of Broca, substantia innominata, and nucleus accumbens. The posterior hypothalamus receives: 1) cholinergic inputs from the septum, the lateral preoptic area and the nuclei of the diagonal band of Broca; 2) dopaminergic afferents from A11, A13, and A14 groups; 3) histaminergic afferents from the posterior hypothalamus; and 4) peptidergic afferents such as methionin-enkephalin, galanin and neurotensin, substance P and corticotropin-releasing factor from the medial preoptic area, the nucleus of the stria terminalis and/or the posterior hypothalamic structures.

Animals↗
PubMedDate not supplied

Complete sequence of cytochrome P450 3c cDNA and presence of two mRNA species with 3' untranslated regions of different lengths.

Two cDNAs (pLM3c 4.1 and pLM3c 6.1) coding for rabbit cytochrome P450 3c were sequenced. cDNA 4.1 (1768 bp) exhibits an open reading frame from nucleotides 74 to 1576 encoding the 501 amino acid residues of the entire protein. cDNA 6.1 (189 bp) appears to encode the last 24 amino acids. Comparative amino acid sequence analysis indicated that P450 PCN1, PCN2, and HLp from rat and man, were 70, 67, and 73% homologous, respectively, to P450 3c. According to the cytochrome P450 nomenclature, the P450 3c gene is termed P450IIIA4. Comparison of the nucleotide sequences indicated that cDNA 6.1 was 100% homologous to cDNA 4.1. However, whereas a poly(A) tract started 23 nucleotides after the AATAAA consensus sequence in cDNA 6.1, cDNA 4.1 had a 3' untranslated region extending 101 bp beyond the polyadenylation signal, which lacked poly(A). This observation is consistent with the previous finding that both cDNA 4.1 and 6.1 hybridized with two distinct species of poly(A)RNA (1700 and 1850 bases) from rabbit liver. The extreme 3'-end 79-bp fragment of cDNA 4.1 therefore was isolated by subcloning in pUC12 (clone p18-Rsa I) and used to probe Northern blots of poly(A)RNA from control and rifampicin-treated rabbit liver. In contrast to cDNA 4.1 and 6.1, p18-Rsa I cDNA hybridized only with the largest (1850 bases) mRNA species. We conclude that rabbit liver contains two P450 3c mRNA species differing in the length of their 3' untranslated region.

Amino Acid Sequence↗
PubMedDate not supplied

Profiles of obese children presenting for metabolic evaluation.

BACKGROUND: Obesity, increasingly prevalent among children, causes major morbidities, among which is earlier onset of type 2 diabetes mellitus (DM). METHODS: We reviewed charts of children aged 3 to 18 years (n=106). The population was divided into four age groups. Anthropomorphic measurements, family history, diet and exercise patterns, and selected endocrine/metabolic measurements were recorded, and descriptive statistics were calculated. RESULTS: Obesity in one or both parents correlated with a higher percent of ideal body weight (IBW) (p = 0.01). Fifty-eight percent of the children had first- or second-degree relatives with a history of type 2 DM; 9% had relatives with type 1 DM. Fifty-four percent had dieted and exercised regularly. Mean onset of obesity was at 4.2 +/- 0.9 years. Mean cholesterol was elevated at 176 mg/dl. Average BMI was 26.6 in the youngest children (Group 1; normal mean for this age approximately 15.5), and increased to 37.8 in adolescents (Group 4; normal mean approximately 21). Elevated TSH was present in <1% of the population. The number of patients with an abnormal insulin: glucose ratio (>1:4) increased with age. CONCLUSIONS: Childhood obesity in children is correlated with family histories of obesity and DM. Thyroid dysfunction is seldom found, although mild hypercholesterolemia and insulin insensitivity are prevalent, especially among adolescents.

Adolescent↗
PubMedDate not supplied

Reported dietary intakes of patients with insulin-dependent diabetes mellitus: limitations of dietary recall.

Reported dietary intakes were assessed in young patients with insulin-dependent diabetes mellitus (IDDM). We studied 44 IDDM patients (24 males, 20 females, mean +/- SD age 13.2 +/- 4.5 yr) and compared them with 44 healthy age- and sex-matched control subjects. Estimated intakes from 24-h dietary recall were analyzed in relation to body weight and degree of diabetes control. The reported energy intake of the IDDM patients with greater than 120% ideal body weight (IBW) for height was 66, 59/88% (where X = geometric mean, L1 = lower confidence limit/L2 = upper confidence limit) of recommended daily allowance (RDA), whereas those with IBW less than 120% reported 90, 67/120% (p less than 0.01). Patients with increased weights in comparison with IBW had higher hemoglobin A1c (HbA1c) levels (11.9 +/- 2.7%) than those with weights more appropriate for IBW (9.7 +/- 2.4%, p less than 0.025). IDDM patients reported overconsumption of protein and fat, but their carbohydrate intake was low. Analysis of dietary recalls revealed high protein intake (X +/- SD, 20.0 +/- 5.0% of total calorie intake), especially in older (27 +/- 4%) compared with younger (19 +/- 2%-19 +/- 4%, p less than 0.01) patients. Proportions of carbohydrate, protein, and fat did not correlate with variations in body weight and/or HbA1c. The reported intake of protein per kilogram body weight was not significantly different between appropriate-weight and overweight IDDM patients. There was no significant difference in reported total energy intakes of IDDM patients compared with their healthy control subjects.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗