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Fernandez PM, Martins JL, Gomes PO, Novo NF, Juliana Y, Nigro AJ. [Effects of partial colonic resection in rats]. ARQUIVOS DE GASTROENTEROLOGIA 1999; 36:210-9. [PMID: 10883314 DOI: 10.1590/s0004-28031999000400009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
UNLABELLED In order to study the effects of partial colectomy, 30 rats Wistar were divided into three groups: GI and GII had the cecun and the ileo cecal valve resected and proximal colectomy was performed in GI and distal in GII. GIII had distal colectomy without cecum resection. The length of the remain colon was of 5 cm in all groups. Colostomy was performed in GI, GII and GIII. Parameters evaluated: body weight, fecal composition concerning to water, lipids and proteins on preoperative time and on the 10th, 20th, 30th, 40th, 50th and 60th days of postoperative time. All statistical tests were conducted at a 5% two-sided risk level. The evaluation was made by analysis of variance techniques. CONCLUSIONS Concerning to body weight, there is no significant difference on the late postoperative time in any group or when comparing the three groups on this same period. On late postoperative time, GI and GII had a large amount of fecal water, lipids and proteins when compared to the preoperative time and to GIII. On the 60th day there's no significant difference on the quantity of fecal water when comparing the three groups and the same occurs on the 50th day when considering the quantity of fecal proteins.
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Martins JL, Lederman HM, Pinus J. Clinical and radiological postoperative evaluation of posterior sagittal anorectoplasty in patients with upper and intermediate anorectal malformations. SAO PAULO MED J 1997; 115:1566-9. [PMID: 9640792 DOI: 10.1590/s1516-31801997000600002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The PSARP is today the most-used surgical technique for correction of high and intermediary anorectal malformations. There is much controversy in the literature about the post-operative evaluation of these cases. We studied 27 cases of anorectal malformations from clinical and radiological aspects, in order to analyse: 1. Fecal continence 2. Relationship between post-operative fecal continence and the associated sacral anomalies 3. Relationship between the radiological evaluation by defecogram and fecal continence From the analysis of the cases, we concluded: 1. Fecal continence was achieved in 48.14% of the cases; partial continence in 25.92%; and fecal incontinence in 25.92% of the cases. 2. The presence of fecal incontinence was directly related to the associated sacral anomalies.
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Abstract
OBJECTIVES To approach the diagnosis and management of two different features of hepatic mesenchymal hamartoma (HMH) in the neonate. METHODS Report of two cases of HMH in newborns and review of the literature (MEDLINE and LILACS). RESULTS Two cases of newborns with huge abdominal masses are presented, one of them complicated by rupture and hemorrhage during ultrasound manipulation, leading to hypovolemic shock. Urgent operation showed a ruptured giant hepatic cyst containing hemorrhagic yellowish fluid. The cyst was removed by edge resection at the level of hepatic segment 6 and the postoperative period was uneventful. The pathological analysis of the cyst including immunohistochemical tests revealed HMH. In case 2, with prenatal diagnosis of hepatic tumor, the mass progressively enlarged after birth, and a left hepatectomy was performed. The macroscopic appearance suggested hemangioma but the histopathological aspect indicated mesenchymal hamartoma with endothelial predominance. Nowadays both children are healthy and asymptomatic. CONCLUSIONS The management of HMH is surgical treatment, because it does not disappear spontaneously. Some cases evolve to giant forms even in the neonatal period leading to fatal complications. Preoperative differential diagnosis from hemangioma is quite difficult for cystic types, and immunohistochemical analysis is important for pathological confirmation.
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Martins JL, Pinus J. Use of biofeedback (BFB) in the treatment of fecal incontinence after surgical correction of anorectal malformations by posterior sagittal anorectoplasty (PSARP). SAO PAULO MED J 1997; 115:1427-32. [PMID: 9532844 DOI: 10.1590/s1516-31801997000300005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE To evaluate biofeedback (BFB) responses to rehabilitation techniques and physical exercises in incontinent or partially continent anorectal malformations patients after posterior sagital anorectoplasty (PSARP). DESIGN Prospective study. SETTING Pediatric Surgery-Department of Surgery-UNIFESP-EPM. PATIENTS The authors report on 14 patients with anorectal malformations (4 with partial fecal incontinence after primary PSARP; 6 with fecal incontinence after primary PSARP; 3 with partial fecal incontinence after secondary PSARP; and 1 with fecal incontinence after secondary PSARP). All patients were rehabilitated via a BFB program of exercises in order to improve the function of the anal sphincteric muscular complex for a period of 1-3 years. MAIN OUTCOME MEASURE Clinical and manometric control. RESULTS After BFB, of 4 partially continent patients after primary PSARP, 3 became continent; of 6 incontinent patients after primary PSARP, 4 became continent; of 3 partially continent patients after secondary PSARP, 1 became continent, 1 showed no improvement and 1 became incontinent (infection + abscess + fibrosis + important anorectal stenosis). The incontinent patient after secondary PSARP showed no improvement. CONCLUSION The authors concluded that BFB, used at the appropriate time with patient collaboration, is an important complement to the anatomical reconstruction of anorectal malformations in order to achieve good development and contractile functioning of the sphincteric muscular complex.
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Martins JL, Pinus J. Clinical and manometric postoperative evaluation of posterior sagital anorectoplasty (PSARP) in patients with upper and intermediate anorectal malformations. SAO PAULO MED J 1996; 114:1303-8. [PMID: 9269104 DOI: 10.1590/s1516-31801996000600004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
PSARP is currently the most widely-used surgical technique for surgical correction of high and intermediary anorectal malformations, but there is much controversy in the literature about the postoperative evaluation of these cases. We studied 27 cases of anorectal malformations operated with PSARP from clinical and manometric aspects in order to analyze: 1) fecal continence; 2) the relationship between fecal continence and the associated sacral anomalies and; 3) the relationship between the postoperative manometric evaluation and fecal continence. From the analysis of 27 cases of high and intermediary anorectal malformations, we concluded that: 1) fecal continence was achieved in 48.14 percent of the cases; partial fecal continence in 25.92 percent; and fecal incontinence in 25.92 percent of the cases; 2) the presence of fecal incontinence was directly related to the association of sacral anomalies and; 3) anorectal manometry is a useful test to evaluate the patients operated by PSARP, due to the existence of a relationship between the manometric results and the degree of fecal continence.
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Martins JL. Stability of NanPb (n <~ 7) clusters: A first-principles molecular-dynamics study. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:2937-2941. [PMID: 9986152 DOI: 10.1103/physrevb.54.2937] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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32
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Cabral BJ, Martins JL. First-principles molecular dynamics of liquid cesium and rubidium. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:872-877. [PMID: 9978236 DOI: 10.1103/physrevb.51.872] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wentzcovitch RM, Martins JL, Price GD. Ab initio molecular dynamics with variable cell shape: Application to MgSiO3. PHYSICAL REVIEW LETTERS 1993; 70:3947-3950. [PMID: 10054006 DOI: 10.1103/physrevlett.70.3947] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Benning PJ, Stepniak F, Poirier DM, Martins JL, Weaver JH, Chibante LP, Smalley RE. Electronic properties of K-doped C60(111): Photoemission and electron correlation. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:13843-13847. [PMID: 10005705 DOI: 10.1103/physrevb.47.13843] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Schabel MC, Martins JL. Energetics of interplanar binding in graphite. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:7185-7188. [PMID: 10002428 DOI: 10.1103/physrevb.46.7185] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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36
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Chen Y, Poirier DM, Jost MB, Gu C, Ohno TR, Martins JL, Weaver JH, Chibante LP, Smalley RE. Electronic structure of CaxC60 fullerides. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:7961-7964. [PMID: 10002550 DOI: 10.1103/physrevb.46.7961] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Troullier N, Martins JL. Structural and electronic properties of C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:1754-1765. [PMID: 10003824 DOI: 10.1103/physrevb.46.1754] [Citation(s) in RCA: 176] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Martins JL, Troullier N. Structural and electronic properties of KnC60. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:1766-1772. [PMID: 10003825 DOI: 10.1103/physrevb.46.1766] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Martins JL, Reuse F. Electronic structure of neutral and charged C60 clusters. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:13671-13675. [PMID: 10001460 DOI: 10.1103/physrevb.45.13671] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wentzcovitch RM, Martins JL, Allen PB. Energy versus free-energy conservation in first-principles molecular dynamics. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:11372-11374. [PMID: 10001073 DOI: 10.1103/physrevb.45.11372] [Citation(s) in RCA: 83] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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41
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Binggeli N, Martins JL, Chelikowsky JR. Simulation of Si clusters via Langevin molecular dynamics with quantum forces. PHYSICAL REVIEW LETTERS 1992; 68:2956-2959. [PMID: 10045538 DOI: 10.1103/physrevlett.68.2956] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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42
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Gu C, Stepniak F, Poirier DM, Jost MB, Benning PJ, Chen Y, Ohno TR, Martins JL, Weaver JH, Fure J, Smalley RE. Metallic and insulating phases of LixC60, NaxC60, and RbxC60. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:6348-6351. [PMID: 10000397 DOI: 10.1103/physrevb.45.6348] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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43
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Binggeli N, Troullier N, Martins JL, Chelikowsky JR. Electronic properties of alpha -quartz under pressure. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:4771-4777. [PMID: 9998284 DOI: 10.1103/physrevb.44.4771] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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44
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Keskar NR, Troullier N, Martins JL, Chelikowsky JR. Structural properties of SiO2 in the stishovite structure. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:4081-4088. [PMID: 10000052 DOI: 10.1103/physrevb.44.4081] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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45
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Benning PJ, Poirier DM, Troullier N, Martins JL, Weaver JH, Haufler RE, Chibante LP, Smalley RE. Electronic states of solid C60: Symmetries and photoionization cross sections. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:1962-1965. [PMID: 9999744 DOI: 10.1103/physrevb.44.1962] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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46
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Jost MB, Troullier N, Poirier DM, Martins JL, Weaver JH, Chibante LP, Smalley RE. Band dispersion and empty electronic states in solid C60: Inverse photoemission and theory. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:1966-1969. [PMID: 9999745 DOI: 10.1103/physrevb.44.1966] [Citation(s) in RCA: 84] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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47
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Chelikowsky JR, Troullier N, Martins JL, King HE. Pressure dependence of the structural properties of alpha -quartz near the amorphous transition. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:489-497. [PMID: 9999149 DOI: 10.1103/physrevb.44.489] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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48
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Benning PJ, Martins JL, Weaver JH, Chibante LP, Smalley RE. Electronic States of KxC60: Insulating, Metallic, and Superconducting Character. Science 1991; 252:1417-9. [PMID: 17772915 DOI: 10.1126/science.252.5011.1417] [Citation(s) in RCA: 263] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The recent report of electrical conductivity in the alkali metal fullerides and the discovery of superconductivity at 18 K for KxC(60) has raised fundamental questions about the electronic states on either side of the Fermi level, their occupancy with K intercalation, and the mechanism of superconductivity. Direct photoemission evidence is presented of filling of bands derived from the lowest unoccupied molecular orbital as a function of K incorporation for the metallic and insulating phases. This filling is not rigid band-like, and it reflects disorder in the K sites. Theoretical analysis indicates that KxC(60) is a strong coupling superconductor, and we suggest that the enhanced electron-phonon interaction is related to the unique hybridization of the C sp-derived states.
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Schabel MC, Martins JL. Structural model for pseudobinary semiconductor alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:11873-11883. [PMID: 9996961 DOI: 10.1103/physrevb.43.11873] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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50
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Troullier N, Martins JL. Efficient pseudopotentials for plane-wave calculations. II. Operators for fast iterative diagonalization. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:8861-8869. [PMID: 9996554 DOI: 10.1103/physrevb.43.8861] [Citation(s) in RCA: 266] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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