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Biomedical subjects

C Maurage

Publications and source records attributed to C Maurage.

At least 37 records · Page 2Linked to original sources

Fatty acid composition of white adipose tissue and breast milk of Mauritian and French mothers and erythrocyte phospholipids of their full-term breast-fed infants.

The fatty acid compositions of white adipose tissue, colostrum and mature milk triacylglycerols from Mauritian (n 13) and French (n 15) women were analysed and compared in order to highlight cultural differences in dietary intakes and their influence on milk fatty acid composition. Erythrocyte phosphatidylethanolamine and phosphatidylcholine fatty acid compositions were also investigated in their term infants, breast-fed over a period of 6 weeks. Fatty acid composition (g/100 g) of all samples was determined by GLC and anthropometric measurements were assessed in the two populations at birth and on day 42. Comparisons of white adipose tissue fatty acid compositions demonstrated lower levels of saturated (23.64 (SE 1.54) v. 29.75 (SE 0.67), P < 0.01) and monounsaturated (39.44 (SE 1.27) v. 54.84 (SE 0.75), P < 0.001) fatty acids and higher levels of polyunsaturated fatty acids (n-6 series: 32.47 (SE 1.31) v. 14.32 (SE 0.47), P < 0.001 and n-3 series: 2.87 (SE 0.49) v. 0.80 (SE 0.07), P < 0.01) in Mauritian than in French samples respectively. Accordingly, milk fat of the Mauritian women contained higher levels of parent essential fatty acids and their longer-chain derivatives than did milk fat from French women. Higher levels of parent essential fatty acids but lower levels of long-chain polyunsaturated fatty acids were found in erythrocyte phospholipids of Mauritian infants compared with French infants. Infants' erythrocyte arachidonate and docosahexaenoate contents did not correlate with any anthropometric variables at birth or at day 42, neither did they correlate with anthropometric variation over the study period. Our results suggest the lack of a simple relationship between the amount of long-chain polyunsaturated fatty acids in human milk and their accretion in the erythrocyte phospholipids of breast-fed infants when provided concomitantly with high levels of both linoleic and alpha-linolenic acids in ratios which fall within recommended ranges.

Adipose Tissue↗

Effect of two types of fish oil supplementation on plasma and erythrocyte phospholipids in formula-fed term infants.

We studied the effect of docosahexaenoic acid (DHA) supplementation of infant formulas on fatty acid composition of blood phospholipids in term infants. Two fish oil supplemented formulas containing 0.45 wt% DHA and high (0.35%) or low (0.10%) eicosapentaenoic acid (EPA) were fed for 42 days and compared with a standard formula and breast milk. Infants fed supplemented formulas and breast milk had similar time-dependent changes for DHA from birth to day 42, i.e., slight decreases in plasma phospholipids and erythrocyte phosphatidylcholine and no change in erythrocyte phosphatidylethanolamine. Low-EPA formula prevented EPA accumulation but did not limit the significant decrease in arachidonic acid (AA) noted in infants fed high-EPA formula. These results suggest that term infant formulas should be supplemented with DHA-rich EPA, low fish oil and AA to achieve a fatty acid status in formula-fed infants similar to that of breast-fed infants.

Arachidonic Acid↗

[Sleeping position, prevention of sudden death syndrome and gastroesophageal reflux].

Based on results of epidemiological studies, dorsal or lateral sleeping positions are now recommanded in the prevention of sudden infant death syndrome (SIDS). This raises an ethical question about the attitude towards the ventral positioning therapy for gastroesophageal reflux (GOR). The consensus conference considers that the ventral position should only be recommanded in GOR when the benefit appears to outweigh the risk of SIDS that it induces. The conference proposes that for infants with simple uncomplicated reflux, sleeping in the prone position should not be introduced in the first line treatment. Prone positioning should be restricted to complicated cases resistant to dietary and medical measures.

Gastroesophageal Reflux↗

[Pulmonary deposition of colistin aerosols in cystic fibrosis. Comparison of an ultrasonic nebulizer and a pneumatic nebulizer].

The objective of this study was to quantify the deposition in the lung of a Colistine aerosol generated using a pneumatic nebuliser (Pari LL(R) equipped with a Pari Master, Pari, Germany) and to compare this with the results obtained with an ultrasonic nebuliser (DP100, DP Medical, France) in four subjects suffering from cystic fibrosis being colonised with Pseudomonas aeruginosa. To quantify the pulmonary deposition of the aerosols we have used an indirect isotopic method which consists in assimilating the kinetics of the molecules studied with a serum albumin tagged with Technetium 99m (Tc99mm) and added to a preparation of Colistine. We have previously verified that the addition of a radioactive tracer does not change the normal distribution or dynamics of the medication within the aerosol and the radioactive counter linked to the tracer reflects the mass of the medicament. The pulmonary deposition was expressed as a percentage of the nebuliser dose. A regional analysis of the deposition (central, peripheral, superior and inferior) was carried out and in central deposition compared to the periphery (C/P) and superior compared to inferior (S/I) were calculated. With the DP100 nebuliser the pulmonary deposition of the aerosol was very reproducible from one patient to another, varying only between 9.5 to 14 percent of the nebuliser dose. With the Pari LL the fraction deposited varied more from one patient to another from 5.6 to 27% of the nebuliser dose. In three of four patients, the pulmonary deposition was superior or equal to that obtained with the ultrasonic nebuliser. The patients whose pulmonary deposition was inferior, using the pneumatic nebuliser, was the youngest in the group and co-ordinately poorly the triggering of the nebuliser with the beginning of inspiration. With the two nebulisers, the pulmonary deposition of Colisitine was very heterogeneous throughout the pulmonary parenchyma. The mean of the ratio C/P and S/I obtained in all four patients was identical (1.35 an 0.86 respectively), indicating a deposition of the aerosol which was predominantly central and inferior but was distributed equally in the peripheral parts of the lung. Pneumatic nebulisers offer a reliable alternative notably for domiciliary treatment for Colistine aerosols in patients suffering from cystic fibrosis. In younger patients who have not yet acquired good motor co-ordination, nebulisers which function continuously or are triggered by inspiration seem to be the preferred choice.

Administration, Inhalation↗

[Elastosis perforans serpiginosa with vitamin A deficiency in a child with trisomy 21].

INTRODUCTION: Elastosis perforans serpiginosa frequently occurs in trisomy 21. Usually no cause is found. We report a case in which vitamin deficiency may have contributed to the development of skin lesions. CASE REPORT: A 11-year-old girl with trisomy 21 developed papulokeratosic eruptions with a linear serpiginous distribution, predominantly involving the lower limbs. On ultrastructure examination, numerous elastic fibers penetrated the epiderma and the baseline membrane had disappeared. The patient also had a totally patent atrioventricular canal with hypoplasia of the left ventricle and cardiac liver. Serum vitamin A level was low (0.56 mumol/l, normal > 1.55). Acitretine was prescribed at the dose of 0.5 mg/kg/day but had to be stopped 2 months later due to elevated liver enzyme levels despite a clear clinical improvement. DISCUSSION: This association between elastosis perforans serpiginosa and vitamin A deficiency, observed here in a child with trisomy 21, has never been reported by others. Vitamin A deficiency might aggravate the skin lesions. In our case, there was probably a relationship between the vitamin A deficiency and the cardiogenic liver disease. The keratoregulatory effect of vitamin A on elastic tissue is less well known. Treatment with retinoids provided clinical improvement but had to be stopped due to hepatotoxicity. Parenteral vitamin A would be an interesting alternative but the risk of side effects would theoretically be greater than with oral retinoids.

Acitretin↗

[Need for multidisciplinary care management in the treatment of type III laryngo-tracheo-esophageal cleft].

We report a case of type III laryngotracheoesophageal cletf. To our knowledge, this case represents the fourth case repaired. Survival was 22 months. The surgical repair we describe here is the first condition to survival. Close collaboration initially with anesthesiologists, then with the intensive careteam unit is required for post-operative management. Moreover, in addition to the surgical trauma, post-operative management is often long with tracheotomy and gastrostomy leading to a corporeal schema disorder in swallowing and respiration. Early psychologic assistance is indispensable to a good functioning of the aero-digestive region.

Abnormalities, Multiple↗

Gastroesophageal reflux and ENT disorders in childhood.

Among controversies in pediatric otorhinolaryngology, the role of gastroesophageal reflux (GER) in inflammatory disorders of the upper airway remains of major concern. A laryngeal involvement by GER was demonstrated in adults and a correlation with GER has been found in pediatric populations with recurrent croup. However, although considered statistically significant, these results concern a few patients only and are inconclusive for a causal relationship. In addition, pH monitoring, often considered as the gold standard for the diagnosis of GER disease, has failed in giving normal values in ENT disorders. Eventually, upper pharyngeal and nasal involvements by GER and GER-related otitis media or otalgia have been suggested by some authors. In the 6th International Congress on Pediatric Otolaryngology, the Symposium on GER was designed to help physicians in improving their knowledge of the data from the literature and their understanding of the involved mechanisms. Bearing in mind the potential severity of GER disease, the audience also heard and debated the most up-to-date methods of assessing GER and treating it in patients with possibly related otorhinolaryngological symptoms. Here is the summary of this symposium.

Child↗

[Efficacy of oral administration of a micellaar solution of vitamin K during the neonatal period].

BACKGROUND: Oral administration of vitamin K to neonates is quite satisfactory for preventing hemorrhagic disease of the newborn. The aim of this study is to test efficacy of a micellar solution of vitamin K at birth. POPULATION AND METHODS: Thirty full term infants, exclusively breast-fed during the first month of life, were included in this study. Seven of them (control group Cos) were given oral supplementation with 5 mg vitamin K1, cremophor; 15 other infants were given oral supplementation with 3 mg micellar solution of vitamin K1 (group MMos) and 7 were given an intramuscular injection of 1.5 mg micellar solution of vitamin K1 (group MMim). Prothrombin time activity and plasma vitamin K concentration were measured in the cord blood, 24 +/- 12 hours and 1 month after supplementation. RESULTS: No hemorrhage was seen and tolerance to vitamin K was good in the 3 groups. Mean prothrombin time activity was 54% in the cord blood, around 55% and 75%, 24 hrs and 1 month after supplementation, respectively; only one infant had low value (41%) by 1 month despite normal plasma vitamin K concentration. Two infants had low plasma vitamin K1 concentration by the second control despite normal prothrombin time activity; one belonged to the MMos group and the other to the Cos group. Mean values of plasma vitamin K1 concentration were higher by 1 month in the MMos group. CONCLUSION: A unique dose of micellar solution of vitamin K given orally at birth seems effective to prevent hemorrhagic disease.

Administration, Oral↗

[Re-education in biofeedback: role in terminal constipation in children].

BACKGROUND: Chronic constipation with or without encopresis is often associated with abnormal defecation dynamics evidenced by manometric study and possibly manageable with biofeedback treatment. PATIENTS AND METHODS: Twenty-six children more than 5 years of age suffering from constipation with or without encopresis for at least 6 months were treated with biofeedback plus lactulose; 15 of them were also given psychiatric attention. Pressure recordings from the internal and external sphincters in response to transient balloon distension of the rectum were obtained in all patients as did the recto-anal inhibitory reflex and the rectal sensitivity. RESULTS: Sixteen patients were considered as definitely cured or improved with this management; two others had relapses 6-12 months later and five were not improved; the three remaining patients were lost for follow-up. CONCLUSION: As already reported, biofeedback treatment represents an interesting role in management of such children.

Adolescent↗

[Congenital adrenal hyperplasia and testicular hypertrophy].

BACKGROUND: Testicular tumors have been reported in boys and adolescents with congenital adrenal hyperplasia (CAH) inadequately controlled by hormonal therapy. CASE REPORTS: Two adolescents were treated for CAH due to 21-hydroxylase deficiency. They developed hyperplastic nodular testes at the age of 16 and 17 years, respectively. CAH in both was inadequately controlled as confirmed by hormonal studies. The tumors regressed after adequate steroid therapy in the first patient but persisted in the second patient despite normalization of 17-OH progesterone and plasma renin activity. CONCLUSION: Testicular ultrasonography should be systematic in all male patients with CAH since radiological findings are earlier than clinical manifestations. The ACTH-dependent tumors require intensification of hormonal therapy in order to obtain tumoral regression and to prevent infertility.

Adolescent↗

Early cholestasis in premature infants receiving total parenteral nutrition: a possible consequence of shock and hypoxia.

We report 18 premature infants (gestational age: 31.1 weeks +/- 2.6 [mean +/- SD] (range: 28-36]) with necrotizing enterocolitis (NEC) who developed total parenteral nutrition (TPN) associated cholestasis. Liver function tests were performed at the start of TPN (D1) and repeated once a week. Considering the date of cholestasis onset (direct bilirubin > 30 mumol/l and/or serum bile salts > 10 mumol/l), the patients can be divided in two groups. The first group consisted of 9 patients who had cholestasis at D1. In these patients shock and/or hypoxia occurred prior to D1 and were the only risk factors of cholestasis identified before D1. The second group consisted of 9 patients who developed cholestasis after D1 and in whom the cause of cholestasis was multifactorial (sepsis, lack of enteral feeding, shock and/or hypoxia). These results suggest that shock and/or hypoxia can be responsible for early cholestasis in premature infants. We conclude that shock and hypoxia should be considered when discussing TPN-associated cholestasis.

Cholestasis↗

Mitochondrial DNA rearrangements with onset as chronic diarrhea with villous atrophy.

We report two unrelated children with onset of chronic diarrhea and villous atrophy in the first years of life. Elevated plasma lactate concentrations and lactate/pyruvate and ketone body molar ratios suggested a genetic defect of oxidative phosphorylation. Analysis of the mitochondrial respiratory chain showed a complex III deficiency in muscle of both patients. Southern blot analysis provided evidence of heteroplasmic mitochondrial DNA rearrangements that involve deletion and deletion-duplication. Directly repeated sequences (10 and 11 base pairs, respectively) were present in the wild type of mitochondrial genome at the boundaries of the deletion. Neither parent of either patient had rearranged molecules in their circulating lymphocytes. It appears that a mitochondrial disorder can have chronic diarrhea and villous atrophy as the initial clinical feature. On the basis of these observations, we suggest that genetic defects of mitochondrial energy supply be considered in elucidating the origin of unexplained chronic diarrheas, especially when other, unrelated symptoms occur in the course of the disease.

Atrophy↗

[Effects of refeeding on serum immunoglobulin (IgA, IgG, IgM) concentrations in children with severe protein-energy malnutrition].

BACKGROUND: Published studies on the serum immunoglobulin concentrations of patients with protein-energy malnutrition (PEM) have been contradictory. This report describes such a study in 21 Senegalese children. POPULATION AND METHODS: Twenty one Senegalese infants (mean age: 19 +/- 2 months) with severe PEM were included in the study. Their weight was less than 32% of the normal range-for-height and all had sparse, thin hair and dyspigmentation of the skin. They were all suffering from hypoproteinemia (less than 70% of normal) and hypoalbuminemia (less that 61% of normal). The presence or absence of edema, loss of subcutaneous fat and mental changes were used to classify them into three groups. 1) kwashiorkor: eight infants; 2) marasmus: eight infants; 3) kwashiorkor plus marasmus: five infants. The control group comprised 27 infants living in the same area and having the same dietary habits as the 21 sick infants. The 21 infants with malnutrition were refed for 3 weeks with a diet supplying 100-150 Kcal/kg/d and 5-8 g/kg/d protein. The plasma concentration of proteins, prealbumin and immunoglobulins was measured on days 0, 8, 15 and 21. RESULTS: The only significant change was in the IgG concentrations of group 1, which increased to normal levels by day 15 as did the total protein and prealbumin. CONCLUSION: Severe PEM can lead to a loss of one class of immunoglobulins, but this can be restored by refeeding.

Female↗

[Enteropathy in premature newborn infants. Prospective study over one year].

BACKGROUND: In neonatal units, there is a tendency to assume that any acutely sick infant with gastro-intestinal symptoms has necrotizing enterocolitis (NEC). This prospective study was conducted to find a better definition of enteropathy in preterm neonates and their risk factors. MATERIAL AND METHODS: All the 351 preterm neonates admitted to a neonatal unit from 1 August 1988 to 31 July 1989 were included in the study. A chart including 45 items was established for each infant, with special attention to data on the pregnancy, delivery, any early ischemic and/or infectious problem, nutrition and any gastro-intestinal (GI) problem. All the neonates were fed similarly, depending their maturation, gestational age and GI status. Each infant was assigned to one of 5 categories: 1) no GI problem; 2) transient obstruction; 3) NEC with pneumatosis; 4) hemorrhagic colitis without obstruction or pneumatosis; 5) other GI disease. RESULTS: 267 infants had no GI problem during their stay in the neonatal unit. 53 developed GI symptoms: 23 transient obstructions, 6 NEC, and 24 hemorrhagic colitis. The mean age at onset of symptoms in these last 3 categories was 7 days, 14 days and 23 days, respectively. Ten risk factors were found to be significantly correlated with GI disturbances: umbilical venous catheter, benzodiazepines, birth weight < 1,500 g, patent ductus arteriosus, ventilatory assistance, abnormal amniotic fluid, gestational age < 32 weeks, early antibiotic treatment, passage of meconium > 48 hours, episodes of apnoea and/or bradycardia. CONCLUSION: This follow-up shows that the GI disturbances of preterm neonates admitted to a neonatal unit, specially those having one or more risk factors, can be separated into 3 groups: 1) isolated intestinal obstruction, seen in the most immature babies during the first week of life with the risk of developing NEC; 2) frank blood in the stool, indicating colitis and possibly minor forms of NEC; 3) combined obstructive and hemorrhagic symptoms, typical of NEC.

Digestive System Diseases↗