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Le Bourgeois M, Gérardin M, Munck A, Navarro J. [Mucoviscidosis. Antibiotic management]. Presse Med 1997; 26:727-32. [PMID: 9183376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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327
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Munck A, Gérardin M, Navarro J. [Mucoviscidosis. Nutritional management]. Presse Med 1997; 26:721-6. [PMID: 9183375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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328
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Foucaud P, Lenoir G, Navarro J. [Mucoviscidosis. Pulmonary transplantation]. Presse Med 1997; 26:733-7. [PMID: 9183377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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329
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Kusmartsev S, Navarro J, Angulo I, Danylets M, Subiza J. TNF-α plus IFN-γ induce expression of slaloadhesin receptor by stromal bone marrow macrophages (Mφ). Immunol Lett 1997. [DOI: 10.1016/s0165-2478(97)85478-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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330
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Martínez-Augustin O, Boza JJ, Navarro J, Martínez-Valverde A, Araya M, Gil A. Dietary nucleotides may influence the humoral immunity in immunocompromised children. Nutrition 1997; 13:465-9. [PMID: 9225341 DOI: 10.1016/s0899-9007(97)00012-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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331
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Varille V, Faye A, Levine M, Faure C, Duval M, Cezard J, Vilmer E, Navarro J. Resting energy expenditure (REE) and growth velocity (GV) in HIV-infected children. Nutrition 1997. [DOI: 10.1016/s0899-9007(97)82646-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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332
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Folkner WM, Preston RA, Border JS, Navarro J, Wilson WE, Oestreich M. Earth-Based Radio Tracking of the Galileo Probe for Jupiter Wind Estimation. Science 1997; 275:644-6. [PMID: 9005845 DOI: 10.1126/science.275.5300.644] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Although the Galileo probe was designed to communicate only to the orbiter, the probe radio signal was detected at two Earth-based radio observatories where the signal was a billion times weaker. The measured signal frequency was used to derive a vertical profile of the jovian zonal wind speed. Due to the mission geometry, the Earth-based wind estimates are less sensitive to descent trajectory errors than estimates based on probe-orbiter Doppler measurements. The two estimates of wind profiles agree qualitatively; both show high wind speeds at all depths sampled.
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333
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Lhasbellaoui F, Faure C, Magnier S, Guillonneau M, Cézard JP, Navarro J, Jacqz-Aigrain E. [Hypertrophic cardiomyopathy complicating a prolonged corticotherapy for hemorrhagic rectocolitis]. Arch Pediatr 1997; 4:48-51. [PMID: 9084709 DOI: 10.1016/s0929-693x(97)84309-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The cardiac side-effects of corticosteroid therapy are very uncommon. CASE REPORT A girl with ulcerative colitis developed at the age of 8 years an acute digestive episode despite prednisolone and total parenteral nutrition. The patient was then given intravenous methylprednisolone (2 mg/kg/d). Polypnea appeared 25 days later while blood pressure remained normal. Echocardiography revealed a cardiac hypertrophy associated with a systolic anterior motion of the mitral valve. Cardiac symptoms and echography findings returned to normal after reduction of corticosteroid therapy and its administration via the oral route. CONCLUSION Hypertrophic cardiomyopathy has been described in preterms treated with dexamethasone for bronchopulmonary dysplasia. It is exceptional in older children under corticosteroid therapy and its mechanism remains unknown.
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334
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Faure C, Belarbi N, Mougenot JF, Besnard M, Hugot JP, Cézard JP, Hassan M, Navarro J. Ultrasonographic assessment of inflammatory bowel disease in children: comparison with ileocolonoscopy. J Pediatr 1997; 130:147-51. [PMID: 9003865 DOI: 10.1016/s0022-3476(97)70325-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVES To determine the feasibility and value of transabdominal ultrasonography of the terminal ileum and colon of children with inflammatory bowel disease (IBD) and to compare the findings with those of ileocolonoscopy. STUDY DESIGN Thirty-eight patients ranging in age from 4 to 18 years who underwent ileocolonoscopy for management of IBD or for diagnosis were studied prospectively. Twenty-one patients had Crohn disease, nine had ulcerative colitis, and eight served as control subjects. Transabdominal ultrasonography was performed on the day before ileocolonoscopy. Ultrasonographic findings were compared with the results of ileocolonoscopy, used as the reference method. RESULTS Peristalsis was recorded in all segments of the control subjects; the thickness of the terminal ileum was always less than 2.5 mm, and that of the large bowel, 2 mm or less. In the two patient subgroups, the thickness range of affected ileal and colonic segments was similar, but values were significantly different from those of the control subjects (chi-square test, p <0.0001). The overall sensitivity of the method was 88%, and the specificity, 93%. CONCLUSION Transabdominal ultrasonography should prove to be a useful clinical and investigational technique, although further studies are needed to assess its value in the treatment of children with IBD.
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335
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Navarro J, Obrador E, Pellicer JA, Aseni M, Viña J, Estrela JM. Blood glutathione as an index of radiation-induced oxidative stress in mice and humans. Free Radic Biol Med 1997; 22:1203-9. [PMID: 9098094 DOI: 10.1016/s0891-5849(96)00554-0] [Citation(s) in RCA: 122] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The effect of x-rays on GSH and GSSG levels in blood was studied in mice and humans. An HPLC method that we recently developed was applied to accurately determine GSSG levels in blood. The glutathione redox status (GSH/GSSG) decreases after irradiation. This effect is mainly due to an increase in GSSG levels. Mice received single fraction radiotherapy, at total doses of 1.0 to 7.0 Gy. Changes in GSSG in mouse blood can be detected 10 min after irradiation and last for 6 h within a range of 2.0-7.0 Gy. The highest levels of GSSG (20.1 +/- 2.9 microM), a 4.7-fold increase as compared with controls) in mouse blood are found 2 h after radiation exposure (5 Gy). Breast and lung cancer patients received fractionated radiotherapy at total doses of 50.0 or 60.0 Gy, respectively. GSH/GSSG also decreases in humans in a dose-response fashion. Two reasons may explain the radiation-induced increase in blood GSSG: (a) the reaction of GSH with radiation-induced free radicals resulting in the formation of thyl radicals that react to produce GSSG; and (b) an increase of GSSG release from different organs (e.g., the liver) into the blood. Our results indicate that the glutathione redox ratio in blood can be used as an index of radiation-induced oxidative stress.
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336
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Martorell MR, Navarro J, Márquez C, Egozcue J, Benet J. Hypomethylation of human sperm pronuclear chromosomes. CYTOGENETICS AND CELL GENETICS 1997; 76:123-7. [PMID: 9186504 DOI: 10.1159/000134529] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Using the methylase SssI enzyme, we have analyzed the degree of in situ methylation of human sperm pronuclear chromosomes obtained by fertilizing hamster oocytes with human sperm. Untreated (control) sperm chromosome complements showed a higher degree of in situ methylation, compared to sperm complements previously treated with 5-azadeoxycytidine or lymphocyte chromosomes. This indicates that human sperm pronuclear chromosomes have a lower degree of genomic methylation compared to that of other somatic cells. The similarity in the degree of in situ methylation of the euchromatic and heterochromatic regions of chromosomes 1, 9, 15, and 16 and the Y chromosome in human sperm does not support the existence of a possible correlation between hypomethylation and heterochromatin decondensation.
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337
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Péréon Y, Navarro J, Sorrentino V, Louboutin JP, Noireaud J, Palade P. Regulation of dihydropyridine receptor and ryanodine receptor gene expression in regenerating skeletal muscle. Pflugers Arch 1997; 433:221-9. [PMID: 9064636 DOI: 10.1007/s004240050271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
One of the the major properties of mature skeletal muscle is its ability to regenerate after injury. The purpose of the present study was to determine whether the expression of genes encoding the dihydropyridine receptor calcium channel (DHPR) and the ryanodine receptor (RyR), which play a critical role in excitation-contraction coupling, is regulated by skeletal muscle regeneration. The process of regeneration was induced by bupivacaine injection in surgically exposed rat extensor digitorum longus (EDL) muscle. After total RNA isolation from the injected and the contralateral control EDL muscles performed 3, 7, 15 and 30 days following injection, Northern blot and RNase protection assays were carried out with four cDNA probes specific for the skeletal and cardiac muscle isoforms of both the DHPR alpha1-subunit and the RyR. After 3 days, an initial precipitous decrease in the expression of the genes encoding the skeletal muscle isoforms of the DHPR and RyR was observed, followed by an increase. Moreover, regenerating skeletal muscle transiently expressed mRNA for the DHPR cardiac isoform, mainly at the beginning of regeneration. No expression of mRNA for the cardiac RyR was observed. Contraction experiments, performed using EDL muscle at the same times after bupivacaine injection, showed that twitch amplitude was markedly decreased in the absence of external calcium, but only during the early stages of regeneration. Similar findings in relation to expression of skeletal and cardiac muscle DHPR message were previously reported from experiments conducted during early developmental stages using fetal skeletal muscle and muscle cell cultures [Chaudhari N, Beam KG (1993) Dev Biol 155:507-515]. These results suggest that expression of the DHPR cardiac isoform in skeletal muscle could explain certain cardiac-like aspects of excitation-contraction coupling of regenerating skeletal muscle and developing skeletal muscle as well.
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339
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De Gaudemar I, Contencin P, Van den Abbeele T, Munck A, Navarro J, Narcy P. Is nasal polyposis in cystic fibrosis a direct manifestation of genetic mutation or a complication of chronic infection? Rhinology 1996; 34:194-7. [PMID: 9050094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Cystic fibrosis (CF) is the most common autosomal recessive disease among Caucasians. It is characterized by abnormal transepithelial sodium and chloride transport. The clinical expressions of the disorder are highly variable including nasal polyposis. Some authors have found that CF children with nasal polyposis form a distinct subgroup of patients within the clinical heterogeneity of the disease with milder gastrointestinal and pulmonary symptoms. The aim of this prospective study was to verify whether the clinical manifestations in CF children with nasal polyposis are different from control CF patients, and to identify any correlation between a phenotype of nasal polyposis and a genotype. Sixty-six CF children, aged 1-25 years, consecutively underwent ENT examination including nasal endoscopy. Twenty-one had nasal polyposis. The remainder formed the control group. There was no statistical difference in the mode and age of presentation of the disease between the two groups. The clinical manifestations (Schwachman and Kulczycki score, colonization by Staphylococcus aureus and Pseudomonas aeruginosa) were comparable between the two groups. We found no statistical difference in the repartition of genotypes between the polyposis and the control groups. Nasal polyposis does not seem to be genetically dependent, but a larger sample of patients is needed to reach an accurate conclusion.
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341
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Obregón E, Börner C, Navarro J, Gurbindo MD, Fernández-Cruz E, Muñoz-Fernández MA. Elevated levels of circulating intercellular adhesion molecule 1 and tumor necrosis factor alpha in the serum of children vertically infected with HIV-1. PEDIATRIC AIDS AND HIV INFECTION 1996; 7:413-7. [PMID: 11361498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
OBJECTIVE To evaluate serum levels of circulating intercellular adhesion molecule-1 (cICAM-1) and tumor necrosis factor-alpha (TNF-alpha) levels in HIV-1-infected children at different stages of infection in children treated or not treated with Zidovudine (ZDV). DESIGN Serum levels of cICAM-1 and TNF-alpha, determined by enzyme immunoassays, were evaluated in 52 HIV-1-infected children, aged between 1 month and 13 years; 35 children were not treated with ZDV and 17 were treated with ZDV. RESULTS cICAM-1 (596 +/- 41 ng/ml) and TNF-alpha (284 +/- 29 pg/ml) levels were significantly elevated in HIV-1-infected children compared with HIV-1-uninfected age-matched controls (cICAM = 295 +/- 17 ng/ml; TNF-alpha = 4.8 +/- 0.89 pg/ml). No significant differences in either parameter were observed between children at different stages of HIV-1 disease. By contrast, a marked statistically significant, reduction of cICAM and TNF-alpha levels was observed in HIV-infected children undergoing antiretroviral therapy. CONCLUSIONS Serum levels of cICAM-1 and TNF-alpha were significantly elevated in HIV-1-infected children regardless of their clinical stage. Moreover, antiretroviral treatment appeared to reduce the serum levels of cICAM-1 and TNF-alpha.
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342
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Varille V, Faye A, Fautre C, Cézard J, Lesceur B, Aptecar M, Duval M, Rorhlich P, Levine M, Vilmer E, Navarro J. Dépense énergétique de repos (DER) de l'enfant contaminé par le VIH. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89556-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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343
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Besnard M, Benali K, Théron P, Munck A, Faure C, Navarro J, Cézard J. Les marqueurs de l'inflammation dans la maladie de Crohn (MC) de l'enfant: intérêt et valeurs prédictives. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89617-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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344
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Faure C, Besnard M, Hirsch A, Mougenot JF, Peuchmaur M, Cezard JP, Navarro J. Chronic hypertrophic gastropathy in a child resembling adult Menetrier's disease. J Pediatr Gastroenterol Nutr 1996; 23:419-21. [PMID: 8956179 DOI: 10.1097/00005176-199611000-00010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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345
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Cézard J, Moutarde O, Morali A, Turck D, Lenaerts C, Girardet J, Belli D, Maurage C, Lachau A, Schmitz J, Vandenplas Y, Mary J, Munck A, Navarro J. Traitement d'entretien par la mésalamine (Pentasa®) dans la maladie de Crohn de l'enfant au décours d'une poussée. Étude multicentrique randomisée en double aveugle. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89622-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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346
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Varille V, Munck A, Le Bourgeois M, Gérardin M, Sayadi M, Kabaker M, Grossi Y, Azancot-Benestry A, Navarro J. Effet de l'oxygénothérapie (O2) sur la fréquence cardiaque (FC) et la dépense énergétique (DE) de l'enfant atteint de mucoviscidose. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89589-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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347
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Besnard M, Mechinichi R, Cardey J, Clarot P, Faure C, Ferkdadji L, Peuchmaur M, Pureur J, Navarro J, Mougenot J. Les ulcères gastroduodénaux de l'enfant: une pathologie de fréquence sous-estimée. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89611-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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348
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Bernard M, Samson-Bouma M, Aggerbeck L, Beucler I, Ferkdadji L, Munck A, Cézard J, Peuchmaur M, Navarro J. Une hypobétalipoprotéinémie familiale atypique. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89608-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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349
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Ategbo S, Munck A, Aigrain Y, Cézard JP, Ferkdadji L, Vaudour D, Peuchmaur M, Palazzo L, Navarro J, Mougenot JF. [Contribution of endosonography to the diagnosis and follow-up of pediatric gastric neurofibroma revealing von Recklinghausen's disease]. Arch Pediatr 1996; 3:1095-8. [PMID: 8952773 DOI: 10.1016/s0929-693x(96)89515-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Gastrointestinal involvement in von Recklinghausen's disease (RD) is rare during childhood; its symptoms are late and its prognosis is poor, related to local recurrence and risk of malignant transformation. CASE REPORT A 13 year-old boy was admitted for hematemesis revealing gastric ulcer. A second episode of hematemesis led to identify a sessile gastric tumor in this patient having numerous skin café-au-lait spots. Recurrent bleeding required laparotomy that showed diffuse infiltration into the anterior gastric wall: histological examination of the excised piece showed characteristic features of neurofibromatosis. The patient was not compliant to the endosonographic survey so that a symptomatic relapse led to total gastrectomy: histological examination did not show malignant transformation. CONCLUSION Endoscopy is a major tool for identifying gastrointestinal localization of RD but endosonography is necessary to precise the extent of the tumor.
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350
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Besnard M, Hurtaud-Roux M, El Mountassiv Z, Benali K, Munck A, Schlegel N, Navarro J, Cézard J. Marqueurs de risque thrombotique dans les maladies inflammatoires du tube digestif de l'enfant. Arch Pediatr 1996. [DOI: 10.1016/s0929-693x(96)89619-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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