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Biomedical subjects

G Lasfargues

Publications and source records attributed to G Lasfargues.

At least 91 records · Page 5Linked to original sources
PubMed1983

[A study of pharmacokinetics of cefoperazone in children].

A study of the pharmacokinetics of cefoperazone (CPZ), used as the sole antibiotic, was performed in 17 children and neonates. The types of infections treated were 7 UTI, 2 otitis media, 2 RTI, 4 septicemia or severe neonatal infections. Causative bacteria included 6 E. coli, 3 Pseudomonas aeruginosa, 1 C perfringens, 1 Klebsiella pneumoniae and 2 Staphylococcus aureus. Cefoperazone was administered by means of rapid IV injections (over 5 min) or IV infusions BID. The blood samples were taken by means of capillary microtubes at time 0, 0.25, 0.50, 0.75, 1, 2, 4, 6, 8 and 12 hours after the end of the first injection. After centrifugation and freezing at -80 degrees DEG method using modified Difco M2 Agar (Nall plus sodium citrate) and stock organinism Bacillus subtilis Atcc 6633. The results achieved in children and neonates were compared, in the 11 children (mean age 6.5 years). The mean single dose was 53 mg/kg. The mean maxima concentration was 145 mcg/ml and was obtained at 0.5 h. Mean serum half-life is 2.4 h. For the neonates mean age was 16 days and the dosage was 47 mg/kg, the maxima concentration was 232 micrograms/ml and was obtained at 0.6 h. The mean serum half-life was 3.4 h in the 2 groups, serum levels at 12 h were still high with a mean of 6.2 micrograms/ml for the 17 children. It appears that doses of 25-50 mg/kg given BID would be satisfactory.

Adolescent↗
PubMed1983

[Rare complication of frontal sinusitis in children: gas gangrene of the scalp. Apropos of a case].

An 11-year-old child developed an infection of the scalp due to anaerobic germs following an acute attack of frontal sinusitis. The mechanism and therapy of this rare complication are discussed. The favorable outcome in this case suggests the need for revision of the generally poor prognosis of this complication, on the condition that adequate treatment be applied under the control of a multidisciplinary team.

Acute Disease↗
PubMed1982

Decrease of thymic hormone serum level in Cockayne syndrome.

Previous reports concerning children with Cockayne syndrome had described decreased T cell proliferative responses and renal anomalies which could be associated with immunologic disturbances. Herein, the thymic function was evaluated by measuring the serum level of thymic hormone. This serum level was found to be undetectable or decreased in seven cases of Cockayne syndrome. Active serum concentrations varied between 0 and 1/8, whereas normal children of the same age show activity in the range between 1/16 and 1/64. In contrast, T cell function, explored by phytohemagglutinin and Concavalin A responses, and mixed lymphocyte cultures was normal. Whether or not this premature sign of immunological aging is primary or secondary to other manifestations of the syndrome is still difficult to assess.

Adolescent↗
PubMed1982

[Global pancreatic and gastric deficiency after a familial membranous glomerulonephritis in a child treated by corticoids and chlorambucil for a long time (author's transl)].

A 2-year-old boy with familial extramembranous glomerulonephritis was unfortunately treated with corticosteroids (1 to 0.5 mg/kg/day) and Chlorambucil (cumulative dose: 2.5 g) over a period of 7 years. Three years later, after recovery from the renal affection, he developed fatty diarrhoea from exocrine pancreatic deficiency, followed 5 years later by the onset of diabetes with hypochlorhydric gastritis. The diagnosis of non-calcifying chronic pancreatitis was suggested by scintigraphic and ultrasonographic investigations and confirmed by the marked increase in lactoferrin levels and the lactoferrin/lipase ratio (greater 0.1 p. cent) in pancreatic juice. The etiology was more likely to be direct toxicity of corticoids and/or immunosuppressors on the pancreas than an immunologically-mediated disease.

Adolescent↗
PubMed1981

[Low blood zinc levels in children with nephrotic syndrome (author's transl)].

In 14 children with nephrotic syndrome the mean blood zinc level (10.6 +/- 2.2 micromol/l) was found to be significantly lower than that of 113 control children (24.7 +/- 7.3 micromol/l). The blood albumin/zinc ratio was also lower in nephrotic children (1.80 +/- 0.57) than in healthy children (2.87 +/- 0.49). There was no correlation between blood albumin and blood zinc levels. The abnormally low zinc levels are partly due to deficient zinc uptake and may explain some of the disorders described in children with persistent nephrotic syndrome.

Adolescent↗
PubMed1981

[Asplenia: a study of 21 subjects splenectomized during childhood for spleen injury (author's transl)].

Clinical and biological studies were carried out in 21 subjects one to twenty-three years after the injured spleen had been removed. Asplenia did not give rise to clinical symptoms, did not facilitate infections and had no effect on growth. Laboratory investigations revealed a decrease in IgM in 6 subjects and minor quantitative and qualitative platelet abnormalities. The absence of Jolly's bodies in 7 subjects was suggestive of spleen regeneration, which was confirmed by scintigraphy in 2 cases. The significance of these findings in discussed.

Adolescent↗
PubMed1981

[Interest of humoral antibodies assay for diagnosis and survey of urinary tract infections by gram negative bacilli and streptococcus D in children (author's transl)].

The assay of humoral antibodies during urinary tract infections of children is performed by passive haemagglutination. In gram negative bacilli infections (176 children) the antigens are derived from the patients' bacteria. For streptococcus D infections the antigen is a phenol extract, specifically tested and used for all streptococcus D urinary tract infections (40 children). The humoral antibodies assay is of first interest to distinguish between high urinary tract infections with renal parenchym bacterial involvement and low urinary tract infections. In high urinary tract infections the antibodies are significantly elevated and almost surely indicate renal infection for a 1/2 560 titre; they raise both in gram negative bacteria and in streptococcus D infections. There is however a difference in a rather higher number of cases of streptococcus D infections where it is impossible of connect high sera titres and clinical symptoms of pyelonephritis, contrary to gram negative bacilli infections. It seems to be due to aetiological differences in urinary tract infections by streptococcus D, which are more often secondary infections, during severe urologic diseases. In such cases the symptomatology of infections is less typical than in E. Coli urinary tract infections. Another interest is the capacity of survey by this method. Three kinds of courses of antibody titres are observed: the first is a clean break of titre lower than 1/160 after three months; the second is the continuance of the same high levels over three months; the third is continuance of high significative level after a first incomplete fall. In the last two cases it is highly probable that a pyelonephritis processes is engaged. This may be useful for treatment and survey of children with urologic diseases.

Antibodies, Bacterial↗
PubMed1981

[Cerebrovascular accidents in children with homozygous sickle cell anemia: report on three cases (author's transl)].

Cerebrovascular accidents occurred in three children with homozygous sickle cell anemia. The first case was that of a young girl with three carotid aneurysms who developed a meningeal hemorrhage. Angiography in the second child, who had had recurrent hemiplegias, showed multiple stenoses of the cerebral arteries, with a moya-moya appearance. The third case was a boy with hemiplegia and signs of a lesion in the sylvian region on computed brain tomography. The outcome was favorable in cases 1 and 3, but there were marked sequelae in the second case. Published reports indicate a different frequency for these accidents in the USA (17 to 26 p. cent) and black Africa (less than 5 p. cent). The mechanism of these accidents is discussed. The presence of multiple aneurysms may be only coincidental, but they could result from the very widespread arterial lesions observed in sickle cell anemia. The moya-moya disease in this case is related to the fibromuscular dysplasia of the cerebral arteries occurring during homozygous sickle cell anemia. It is reported fairly frequently in the published literature and appears to run a more severe course than non-drepanocytic moya-moya cases, with many deaths and marked neurological sequelae. Care is required when conducting cerebral arteriography in order to detect these lesions in cases of homozygous sickle cell anemia, especially when computed brain tomography is not possible or does not supply confirmation. Exchange transfusion can prepare these patients for arteriography by reducing hemoglobins levels to 20 p. cent, and it is apparently also a useful adjuvant during therapy of these accidents.

Adolescent↗
PubMed1980

[Acute leukaemia during pregnancy: favourable course of pregnancy in two patients treated with cytosine arabinoside and anthracyclines (author's transl)].

A report of two cases of acute leukaemia discovered during pregnancy. The first was treated from the 24th week with cytosine arabinoside, daunorubicine and vincristine and then rubidazone. Only an incomplete remission was obtained. The pregnancy ended with the birth at the 36th week of a normal child, which remains well at the age of 13 months. The second patient received during the 29th week of pregnancy chemotherapy combining cytosine arabinoside and daunorubicine. Signs of foetal distress appeared at 31 weeks. Delivery took place during the 33rd week in a phase of aplasia. The child was born apparently dead and was resuscitated. A complete remission of the leukaemia was obtained. The child was well at the age of 13 months. A transient neutropaenia was noted at the age of 2 months in both children.

Adult↗
PubMed1980

Uropathies diagnosed in the neonatal period: symptomatology and course.

Forty infants with a uropathy diagnosed during the first two months of life were studied. Presenting signs were urinary tract infection in one-half of the cases, disorders of micturition, pelvic or abdominal wall malformations, abdomino-pelvic mass, and macroscopic hematuria. Obstructive uropathy was observed in 17 children and vesicoureteric reflux in 29. We noted a high incidence of extrarenal malformations (14 of the 40 cases) in this series of uropathies diagnosed during the neonatal period. Despite early diagnosis, the course was not favorable in 11 cases with congenital anomalies of the renal parenchyma.

Female↗
PubMed1980

[Classes of antibody and complement coating bacteria in the urinary tract infections of the child].

Urine specimens from 88 children with urinary tract infections were tested by direct immunofluorescence for the presence of antibody coated bacteria and were positive. They were further tested to determine the classes of antibody complexed with the bacteria: 75% were coated with IgA, 62% with IgG and 9% with IgM. In 47 children, C1q, C3 and C4 coated bacteria were also studied: negative results were found in 30 children and positive in 17. The ACB test may be positive without any IgG present; therefore it must be used a antihuman globulin and not only a antihuman IgG.

Adolescent↗