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143 results on '"Leroy, J.P."'

18. Intravenous pulse cyclophosphamide therapy in myositis and Sjogren's syndrome

Author

Leroy, J.P., Drosos, A.A., Yiannopoulos, D.I., Youinou, P., and Moutsopoulos, H.M.

Subjects
Sjogren's syndrome -- Case studies, Sjogren's syndrome -- Complications, Sjogren's syndrome -- Drug therapy, Myositis -- Drug therapy, Cyclophosphamide -- Evaluation, Health
Abstract

Sjogren's syndrome is a disorder characterized by rheumatoid arthritis (inflammatory joint disease), xerostomia (dryness of the mouth), and keratoconjunctivitis sicca (congestion and dryness of the conjunctiva, the membrane lining the eye and lids). This syndrome usually develops in postmenopausal women and is thought to be a disease of collagen, a structural fiber-like protein. Patients with Sjogren's syndrome may develop myositis, inflammation of the muscle tissue. A case is described of a 65-year-old woman with Sjogren's syndrome and myositis, who responded to treatment with the drug cyclophosphamide, which was given intravenously in pulse doses. The patient developed inflammation, pain, and weakness of the muscle three years after the onset of symptoms of keratoconjunctivitis sicca. Microscopic tissue examination of the muscle revealed several abnormalities, including muscle tissue death, ingestion of muscle fibers by phagocytic cells, and some degree of muscle regeneration. Treatment with methylprednisolone and cyclophosphamide resulted in reduction of symptoms, as indicated by clinical, biochemical, and tissue tests. (Consumer Summary produced by Reliance Medical Information, Inc.)

Published
1990

19. Comparison of labial and sublingual salivary gland biopsies in the diagnosis of Sjogren's syndrome

Author

Pennec, Y.L., Leroy, J.P., Jouquan, J., Lelong, A., Katsikis, P., and Youinou, P.

Subjects
Salivary glands, Sjogren's syndrome -- Diagnosis, Xerostomia -- Diagnosis, Health
Abstract

Sjogren's syndrome (SS) is a chronic inflammatory disease involving inflammation of the cornea and conjunctiva of the eye, xerostomia or dryness of the mouth from dysfunction of the salivary glands, and connective tissue disease, most commonly rheumatoid arthritis or lupus. The xerostomia can be assessed by examination of biopsies of the salivary glands. The biopsies are used as a tool for diagnosing SS. Biopsies from the labial and sublingual salivary glands were compared in order to assess how they were associated with the diagnosis of SS. Specimens from 50 patients, who were suspected to have SS based on the symptoms of dry mouth or dry eyes, were examined. The tissue specimens were examined for ductal structures or foci filled with clumps of cells, particularly lymphocytes, that are involved in the inflammatory response. Foci were found in 14 of the labial and 29 of the sublingual salivary glands from patients with SS; this indicated a better correlation between the disease and the number of foci in the sublingual salivary gland than in the labial salivary gland. However, the examination was more useful for diagnosing SS if both salivary glands were examined. (Consumer Summary produced by Reliance Medical Information, Inc.)

Published
1990

20. Vaccinologie tropicale

Author

Legros, Fabrice, Leroy, J.P., Massy, N., Saluzzo, J.F., Gentile, L. de, and Teuwen, D.E.

Subjects
EPIDEMIOLOGIE, FIEVRE JAUNE, VACCINATION, IMMUNITE
Published
2007

22. B -> K* gamma decay on APE

Author

Abada, A., Boucaud, Philippe, Crisafulli, M., Leroy, J.P., Lubicz, V., Martinelli, G., Rapuano, F., Serone, M., Stella, N., Bartoloni, A., Battista, C., Cabasino, S., Cabibbo, N., Panizzi, E., Paolucci, P.S., Sarno, R., Todesco, G.M., Torelli, M., Vicini, P., Abada, A, Boucaud, P, Crisafulli, M, Leroy, Jp, Lubicz, Vittorio, Martinelli, G, Rapuano, F, Serone, M, Stella, N, Bartoloni, A, Battista, C, Cabasino, S, Cabibbo, N, Panizzi, E, Paolucci, P, Sarno, R, Todesco, Gm, Torelli, M, and Vicini

Subjects
High Energy Physics::Lattice, High Energy Physics::Phenomenology, Particle Physics - Lattice
Abstract

We present results for the radiative decay B\rightarrow K^* \gamma, obtained by using the Clover action at \beta = 6.0 on APE. The compatibility between the scaling laws predicted by the Heavy Quark Effective Theory (HQET) and pole dominance is discussed. The final result depends crucially on the assumed q^2-dependence of the form factors.

Published
1995

23. A rigorous treatment of the lattice renormalization problem of f$_{B}$

Author

Boucaud, Philippe, Leroy, J.P., Micheli, J., Pene, O., and Rossi, G.C.

Subjects
High Energy Physics::Lattice, Particle Physics - Theory
Abstract

The $B$-meson decay constant can be measured on the lattice using a $1/m_b$ expansion. To relate the physical quantity to Monte Carlo data one has to know the renormalization coefficient, $Z$, between the lattice operators and their continuum counterparts. We come back to this computation to resolve discrepancies found in previous calculations. We define and discuss in detail the renormalization procedure that allows the (perturbative) computation of $Z$. Comparing the one-loop calculations in the effective Lagrangian approach with the direct two-loop calculation of the two-point $B$-meson correlator in the limit of large $b$-quark mass, we prove that the two schemes give consistent results to order $\alpha_s$. We show that there is, however, a renormalization prescription ambiguity that can have sizeable numerical consequences. This ambiguity can be resolved in the framework of an $O(a)$ improved calculation, and we describe the correct prescription in that case. Finally we give the numerical values of $Z$ that correspond to the different types of lattice approximations discussed in the paper. The $B$-meson decay constant can be measured on the lattice using a $1/m_b$ expansion. To relate the physical quantity to Monte Carlo data one has to know the renormalization coefficient, $Z$, between the lattice operators and their continuum counterparts. We come back to this computation to resolve discrepancies found in previous calculations. We define and discuss in detail the renormalization procedure that allows the (perturbative) computation of $Z$. Comparing the one-loop calculations in the effective Lagrangian approach with the direct two-loop calculation of the two-point $B$-meson correlator in the limit of large $b$-quark mass, we prove that the two schemes give consistent results to order $\alpha_s$. We show that there is, however, a renormalization prescription ambiguity that can have sizeable numerical consequences. This ambiguity can be resolved in the framework of an $O(a)$ improved calculation, and we describe the correct prescription in that case. Finally we give the numerical values of $Z$ that correspond to the different types of lattice approximations discussed in the paper.

Published
1993

32. A lattice estimate of thegD*Dπ coupling

Author

Abada, A., primary, Bec´irevic´, D., additional, Boucaud, Ph., additional, Herdoiza, G., additional, Leroy, J.P., additional, Le Yaouanc, A., additional, Pe`ne, O., additional, and Rodriguez-Quintero, J., additional

Published
2003
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33. An instanton picture O.P.E.〈A2〉 condensate?

Author

Boucaud, Ph., primary, De Soto, F., additional, Donini, A., additional, Leroy, J.P., additional, Le Yaouanc, A., additional, Micheli, J., additional, Moutarde, H., additional, Pe`ne, O., additional, and Rodri´guez-Quintero, J., additional

Published
2003
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39. Deux durs mollets douloureux

Author

Velmans, N., primary, Boulenger, A., additional, Gomes, C., additional, Leroy, J.P., additional, Cleuziou, A., additional, and Cénac, A., additional

Published
2000
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50. A lattice study of the exclusive decay amplitude, using the Clover action at β = 6.0

Author

Abada, As, primary, Boucaud, Ph, additional, Cabibbo, N, additional, Crisafulli, M, additional, Leroy, J.P, additional, Lubicz, V, additional, Martinelli, G, additional, Rapuano, F, additional, Serone, M, additional, Stella, N, additional, Bartoloni, A, additional, Battista, C, additional, Cabasino, S, additional, Panizzi, E, additional, Paolucci, P.S, additional, Sarno, R, additional, Todesco, G.M, additional, Torelli, M, additional, and Vicini, P, additional

Published
1996
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