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Cowley RA, Buyers WJL, Martel P, Stevenson RWH. Magnetic excitations and magnetic critical scattering in cobalt fluoride. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3719/6/20/014] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim SM, Buyers WJL, Martel P, Hood GM. Vacancy-silicon binding energy in aluminium by positron annihilation. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0305-4608/4/3/007] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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78
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Smith AJ, Cowley RA, Woods ADB, Stirling WG, Martel P. Roton-roton interactions and excitations in superfluid helium at large wavevectors. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3719/10/4/011] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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79
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Martel P, Gilbert D, Drouot L, Prost C, Raux G, Delaporte E, Joly P, Tron F. A polymorphic variant of the gene coding desmoglein 1, the target autoantigen of pemphigus foliaceus, is associated with the disease. Genes Immun 2001; 2:41-3. [PMID: 11294567 DOI: 10.1038/sj.gene.6363718] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2000] [Revised: 09/29/2000] [Accepted: 10/08/2000] [Indexed: 11/08/2022]
Abstract
Two polymorphic markers were identified on the desmoglein 1 gene which encodes the autoantigen targeted by pathogenic antibodies in pemphigus foliaceus (PF), a cutaneous autoimmune blistering disease. The first marker, made of a variant haplotype of five mis-sense mutations located on the part of the gene encoding the fourth and fifth extracellular domains of the protein, is not associated with the disease. The second marker consists of a single silent T to C transition at position 809 and was found to be significantly more frequent (P = 0.015) in Caucasian PF patients (n = 36) than in controls (n = 98). Thus, pemphigus foliaceus constitutes another example of autoimmune disease in which the autoantigen polymorphism contributes to disease susceptibility.
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Barrier A, Martel P, Dugue L, Gallot D, Malafosse M. [Direct and reservoir colonic-anal anastomoses. Short and long term results]. ANNALES DE CHIRURGIE 2001; 126:18-25. [PMID: 11255967 DOI: 10.1016/s0003-3944(00)00452-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
STUDY AIM This retrospective study was designed to assess the operative, oncologic and functional results of total proctectomy with coloanal anastomosis (CAA). PATIENTS AND METHOD Between 1990 and 1994, 81 patients (44 males/37 females: mean age: 59 years) were operated for a cancer (n = 67) or a benign lesion (n = 14) of the rectum. Sixty-four patients had a straight CAA and 17 patients had a colonic J-pouch. RESULTS There was no operative mortality. Two patients were reoperated for colonic necrosis and underwent abdominoperineal resection. An anastomotic leak was observed in 11 patients and its severity was decreased by a diverting stoma. An anastomotic stricture was observed in 10 patients. Of the 67 patients with cancer, 19 (28%) developed metastases and 11 (16%) developed local recurrence. The 5-year survival rate was 69%. Twelve months after the operation, continence was similar with the two types of CAA, but the mean daily stool frequency was lower in patients with a reservoir. With a long follow-up (mean = 9 years), functional results were good with regard to continence and stool frequency, almost similar with the two types of CAA; functional disorders (noctumal stools, fragmentation, urgency) were reported by 25 to 40% of patients. CONCLUSION Total proctectomy with coloanal anastomosis yields good oncologic results. With regard to functional results, the superiority of the colonic J-pouch, which is observed in the first postoperative year, was lost beyond this period; long-term results are good for continence and stool frequency, but some disorders persist in a significant proportion of patients.
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Joly P, Richard C, Gilbert D, Courville P, Chosidow O, Roujeau JC, Beylot-Barry M, D'incan M, Martel P, Lauret P, Tron F. Sensitivity and specificity of clinical, histologic, and immunologic features in the diagnosis of paraneoplastic pemphigus. J Am Acad Dermatol 2000; 43:619-26. [PMID: 11004616 DOI: 10.1067/mjd.2000.107488] [Citation(s) in RCA: 140] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Paraneoplastic pemphigus (PNP) is an autoimmune blistering disease characterized by the production of autoantibodies mainly directed against proteins of the plakin family. An overlapping distribution of autoantibody specificities has been recently reported between PNP, pemphigus vulgaris (PV), and pemphigus foliaceus (PF), which suggests a relationship between the different types of pemphigus. OBJECTIVE Our purpose was to evaluate the sensitivity and the specificity of clinical, histologic, and immunologic features in the diagnosis of PNP. METHODS The clinical, histologic, and immunologic features of 22 PNP patients were retrospectively reviewed and compared with those of 81 PV and PF patients without neoplasia and of 8 PV and 4 PF patients with various neoplasms. RESULTS One clinical and 2 biologic features had both high sensitivity (82%-86%) and high specificity (83%-100%) whatever the control group considered: (1) association with a lymphoproliferative disorder, (2) indirect immunofluorescence (IIF) labeling of rat bladder, and (3) recognition of the envoplakin and/or periplakin bands in immunoblotting. Two clinicopathologic and two biologic features had high specificity (87%-100%) but poor sensitivity (27%-59%): (1) clinical presentation associating erosive oral lesions with erythema multiforme-like, bullous pemphigoid-like, or lichen planus-like cutaneous lesions; (2) histologic picture of suprabasal acantholysis with keratinocyte necrosis, interface changes, or lichenoid infiltrate; (3) presence of both anti-epithelial cell surface and anti-basement membrane zone antibodies by IIF; and (4) recognition of the desmoplakin I and/or BPAG1 bands in immunoblotting. Interestingly, 45% of patients with PNP presented initially with isolated oral erosions that were undistinguishable from those seen in PV patients, and 27% had histologic findings of only suprabasal acantholysis, which was in accordance with the frequent detection of anti-desmoglein 3 antibodies in PNP sera. CONCLUSION The association with a lymphoproliferative disorder, the IIF labeling of rat bladder, and the immunoblotting recognition of envoplakin and/or periplakin are both sensitive and specific features in the diagnosis of PNP.
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Apostoli P, Huard C, Chaumontet C, Martel P, Alessio L, Mazzoleni G. Effects of four inorganic lead compounds on the proliferation and junctional coupling of cultured REL liver cells. Am J Ind Med 2000; 38:340-8. [PMID: 10940974 DOI: 10.1002/1097-0274(200009)38:3<340::aid-ajim15>3.0.co;2-s] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Chronic, low-level exposure to inorganic lead (Pb) has been involved in a number of human diseases, including tumors. In this study, the effect of four different inorganic Pb compounds (acetate, chloride, monoxide, and sulfate) was evaluated, in vitro, on liver-derived REL cells, known to be very sensitive to tumor promoters. METHODS Cytotoxicity and effects on intercellular communication (GJIC) were evaluated, respectively, by cell- density/proliferation and dye-transfer assays. Pb concentration in the media solutions used for each treatment was quantified by atomic absorption spectroscopy-electrothermal atomization. RESULTS Each of the Pb compounds we tested showed a typical dose- and time-related effect on REL cell proliferation, this effect not being related to the free metal concentration. Contrary to classical tumor promoters, none of the compounds significantly affected REL GJIC (1-hour treatment). CONCLUSIONS Our results are indicative of specificity in the effects of the different Pb compounds. The mechanism(s) of their action need further investigations.
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Martel P, Betton PO, Gallot D, Sezeur A, Malafosse M. [Surgical treatment of Crohn's disease of the large intestine: do rectal complications influence the results of ileorectal anastomosis?]. ANNALES DE CHIRURGIE 2000; 125:547-51. [PMID: 10986766 DOI: 10.1016/s0003-3944(00)00239-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
STUDY AIM The purpose of this retrospective study was to compare the morbidity and long-term outcome of patients undergoing total colectomy and ileorectal anastomosis (IRA) performed for Crohn's colitis with or without associated proctitis. PATIENTS AND METHODS Thirty-nine patients with a mean age of 35 years (17-72 years) underwent total colectomy with IRA. Patients were retrospectively classified into two groups; group 1 (28) without rectal involvement; group 2 (11) with proctitis. Follow-up data were obtained during 1998, by reviewing all patients. Mean postoperative follow-up was 10.6 years (1.5-22). RESULTS There were no postoperative deaths. Six (15%) patients experienced postoperative complications, with no difference between the two groups. Sixteen patients (41%) developed recurrence requiring surgery: 9 in group 1 (32%) and 7 in group 2 (64%) (p > 0.05). The IRA had to be removed or was no longer functional in 12 patients: 6 in group 1 (21.5%) and 6 in group 2 (54.5%) (p < 0.05). CONCLUSION Moderate proctitis does not increase the morbidity of total colectomy with IRA for Crohn's disease. The risk of reoperation and secondary protectomy is higher when proctitis was present, but the IRA was still functional in one-half of patients after more than 10 years of follow-up.
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Martel P, Laroche L, Courville P, Larroche C, Wechsler J, Lenormand B, Delfau MH, Bodemer C, Bagot M, Joly P. Cutaneous involvement in patients with angioimmunoblastic lymphadenopathy with dysproteinemia: a clinical, immunohistological, and molecular analysis. ARCHIVES OF DERMATOLOGY 2000; 136:881-6. [PMID: 10890990 DOI: 10.1001/archderm.136.7.881] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine whether cutaneous involvement in patients with angioimmunoblastic lymphadenopathy with dysproteinemia (AILD) is related to a clonal T-cell proliferation. DESIGN Retrospective study. SETTING University hospitals. PATIENTS Ten patients with AILD and cutaneous involvement. MAIN OUTCOME MEASURE The T-cell receptor-gamma (TCRG)gene rearrangement was studied with the use of polymerase chain reaction and denaturing gradient gel electrophoresis in blood, nodal, and skin samples. Skin and nodal samples were investigated also for the presence of Epstein-Barr virus (EBV) RNA by in situ hybridization. RESULTS A transient morbilliform eruption of the trunk was seen most often. Other cutaneous features were infiltrated plaques and purpuric or urticarial lesions. A clonal TCRG gene rearrangement was detected in 7 skin samples, corresponding to a maculopapular eruption with a histological pattern of nonspecific mild lymphoid dermal infiltrate in 6 patients, and to erythematous plaques with histological findings of typical cutaneous lymphoma in 1 patient. In the 5 patients in whom a TCRG gene rearrangement was evidenced in skin and lymph node samples, identical clones were detected in both. Five patients died by the end of the study, with a mean survival of 33.2 months. Four of these 5 patients had a clonal infiltrate in skin and lymph nodes. The EBV RNA was detected in only 1 of 10 skin biopsy specimens and in 5 of 8 lymph nodes tested. CONCLUSIONS Cutaneous involvement is often related to a clonal T-cell proliferation in AILD, even when clinical and histological features are nonspecific. Cutaneous infiltrate seems to be clonally related to the nodal T-cell proliferation. The role of EBV infection in skin lesions was not evidenced.
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Martel P, Bonnet F, Farnarier J, el Ghaoui A. [Utilization of CO2 lasers in continuous or pulsed mode for conizations: apropos of 230 cases]. GYNECOLOGIE, OBSTETRIQUE & FERTILITE 2000; 28:537-46. [PMID: 10996965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
OBJECTIVE A retrospective study with the aim of analysing efficiency, anatomical and functional consequences of a conservative methodology for the treatment of cervical intra-epithelial neoplasias (CIN) using carbon dioxide laser. MATERIALS AND METHOD Two hundred and thirty patients were treated and studied with an average waiting period of 38 months. During the study new methodology allowed a cut in the pulse regimen with adjustments in high energy levels. This allowed us to subdivide the study into two groups, respectively 113 and 117 patients, and to provide a differential rate of immediate and late complications. The pre-therapy lesion assessment led to a diagnosis of severe dysplasia (53%), carcinoma in situ (19.1%), mild dysplasia (20.4%) and investigational conization 7%; in one case, conization was provided for adenocarcinoma in situ. RESULTS The anatomo-pathologic results showed 2.1% microinvasive tumors, 22.2% epidermoid carcinoma in situ, 2.1% adenocarcinoma in situ, 53.6% severe dysplasia, 14% mild dysplasia, 0.9% low dysplasia, and 5.2% viral lesions without dysplasia. The excision limit are in sano in 95.2% of cases, and non in sano for the endocervix in 2.2% of cases and for the ectocervix in 2.6% of cases. COMPLICATIONS Needing second surgical intervention hemorrhage rates were 1.8% during the first period (2/113) and 1.7% according to the second period (2/117). No infectious complications were reported in the two series. As for delayed and long-term complications, incomplete stenosis rates (uterine cervix permeability up to n degree 3 Hegar dilatator) reached respectively 3.5% of cases (4/113) and 1.7% (2/117); complete stenosis rates were 2.6% (3/113) and 0% (0/117). RECURRENCES: Nine recurrent cases (5.9%) were divided into two low dysplasia, four moderate dysplasia, one severe dysplasia, one epidermoid carcinoma in situ and one infiltrating carcinoma. CONCLUSIONS The less aggressive possible choice of a conservative therapy allows not only young patients to conserve their fertility but also to preserve cervical anatomy and to facilitate diagnosis of a recurrent case. The decrease in the complications rates that we have allocated first to the use of carbon dioxide laser and second to the pulsed beam emphasize quality research throughout our experience.
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Bosca L, Martel P, Gallot D, Malafosse M. [Atypical metastatic sites in rectal cancer]. ANNALES DE CHIRURGIE 2000; 125:473-5. [PMID: 10925491 DOI: 10.1016/s0001-4001(00)00151-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the case of a 48-year-old woman operated on for rectal carcinoma and subsequently for metastasis located in three unusual sites (i.e., laryngeal, muscular and cutaneous). Three months after the last surgery, the patient was still alive, without any detectable metastasis.
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Martel P, Gilbert D, Labeille B, Kanitakis J, Joly P. A case of paraneoplastic pemphigus with antidesmoglein 1 antibodies as determined by immunoblotting. Br J Dermatol 2000; 142:812-3. [PMID: 10792239 DOI: 10.1046/j.1365-2133.2000.03433.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Delannes M, Thomas L, Martel P, Bonnevialle P, Stoeckle E, Chevreau C, Bui BN, Daly-Schveitzer N, Pigneux J, Kantor G. Low-dose-rate intraoperative brachytherapy combined with external beam irradiation in the conservative treatment of soft tissue sarcoma. Int J Radiat Oncol Biol Phys 2000; 47:165-9. [PMID: 10758319 DOI: 10.1016/s0360-3016(99)00548-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE Conservative treatment of soft tissue sarcomas most often implies combination of surgical resection and irradiation. The aim of this study was to evaluate low-dose-rate intraoperative brachytherapy, delivered as a boost, in the local control of primary tumors, with special concern about treatment complications. METHODS AND MATERIALS Between 1986 and 1995, 112 patients underwent intraoperative implant. This report focuses on the group of 58 patients with primary sarcomas treated by combination of conservative surgery, intraoperative brachytherapy, and external irradiation. Most of the tumors were located in the lower limbs (46/58-79%). Median size of the tumor was 10 cm, most of the lesions being T2-T3 (51/58-88%), Grade 2 or 3 (48/58-83%). The mean brachytherapy dose was 20 Gy and external beam irradiation dose 45 Gy. In 36/58 cases, iridium wires had to be placed on contact with neurovascular structures. RESULTS With a median follow-up of 54 months, the 5-year actuarial survival was 64.9%, with a 5-year actuarial local control of 89%. Of the 6 patients with local relapse, 3 were salvaged. Acute side effects, essentially wound healing problems, occurred in 20/58 patients, late side effects in 16/58 patients (7 neuropathies G2 to G4). No amputation was required. The only significant factor correlated with early side effects was the location of the tumor in the lower limb (p = 0.003), and with late side effects the vicinity of the tumor with neurovascular structures (p = 0.009). CONCLUSION Brachytherapy allows early delivery of a boost dose in a reduced volume of tissue, precisely mapped by the intraoperative procedure. Combined with external beam irradiation, it is a safe and efficient treatment technique leading to high local control rates and limited functional impairment.
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Martel P, Connan L, Bonnet F, Delannes M, Farnarier J, Mihura J, El Ghaoui A. [Cervical adenocarcinomas: diagnostic, prognostic and therapeutic aspects in a 49 case-control study]. JOURNAL DE GYNECOLOGIE, OBSTETRIQUE ET BIOLOGIE DE LA REPRODUCTION 2000; 29:48-54. [PMID: 10675833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
OBJECTIVES The aim of this study was to search for potential diagnostic, therapeutic and prognosis differences between a series of 49 adenocarcinomas of the cervix and a matched series of epidermoid carcinomas. METHODS Forty-nine adenocarcinomas were treated between 1978 and 1992 and retrospectively compared to a series of 98 paired epidermoid carcinomas. RESULTS The adenocarcinoma incidence is 5.4%. There was no significant difference for age distribution, parity, or hormonal status. There was also no significant difference for clinical features. Stage I appeared more frequently in the adenocarcinoma group (stage I: 69.4%, stage II: 14.3%, stage III: 14.3%, stage IV: 2%). Stage I are also more frequently found in the adenocarcinoma group (69.4% versus 42. 9%, p< 0,05). Combined radio-surgical treatment was proposed more often for the adenocarcinoma group (respectively radio-surgery combination 73%, radiotherapy alone 18%, surgery 9%); in the epidermoid carcinoma group, combined radio-surgical treatment and radiotherapy were the usual treatment (46%); surgery alone appeared in third rank place (8%). Adenocarcinoma pelvic recurrences appeared more frequently (28.6% for adenocarcinoma group versus 13.3% for epidermoid group p< 0.05), while distant recurrence was the same (12. 2% for adenocarcinoma group versus 11.2% for epidermoid group, p< 0. 05). Five years overall survival rate was worse for the adenocarcinoma group (52% versus 63.7%, p< 0.05) but the difference was not significant for the disease free survival rate. Only for stage Ib, there are also more pelvic recurrences (35.4% versus 13.1%, p< 0.05), more distant recurrences (9.6% versus 2.6%, p< 0.05), and lower overall survival for adenocarcinomas (58.7% versus 88.5%, p< 0. 01). CONCLUSION The incidence of adenocarcinomas is slightly increasing (absolute value in our experience) and the low stages seem to be more frequent in our experience probably by staging inaccuracy. Adenocarcinoma prognosis seems to be worse because of its poor radio-sensitivity. It seems necessary to optimize clinical staging and therapeutic protocols excluding radiotherapeutic approach, including surgical purposes or radio-surgical associations if unfavorable histological features or tumoral enlargement (T> 3 cm) are found.
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Raux G, Gilbert D, Joly P, Daveau M, Martel P, Christ M, Tron F. Association of KM genotype with bullous pemphigoid. J Autoimmun 2000; 14:79-82. [PMID: 10648118 DOI: 10.1006/jaut.1999.0345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Association of kappa light chain immunoglobulin allotypes with bullous pemphigoid was examined in 101 Caucasian patients. Km alleles were determined by polymerase chain reaction amplification followed by restriction enzyme digestion. The frequency of Km(3)/Km(1,2)kappa light-chain genotype was found to be significantly associated with the disease, while that of the Km(3)homozygous genotype was significantly higher in patients with both anti-BPAG1 and anti-BPAG2 autoantibodies.
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Gallot D, Martel P, Honigman I, Chenard X, Sezeur A, Malafosse M. [Posterior rectopexy in total rectal prolapse-]. ANNALES DE CHIRURGIE 2000; 125:40-4. [PMID: 10921183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
STUDY AIM The aim of this retrospective study was to report the results of posterior Orr-Loygue rectopexy in 55 patients operated on for rectal prolapse. PATIENTS AND METHOD From 1986 to 1997, 114 patients were operated on for rectal prolapse and 55 had an Orr-Loygue operation. There were 47 women and 8 men (mean age: 55 years). Twenty-five patients (45%) had fecal incontinence, 26 (47%) described preoperative 'constipation'. The procedure was performed under general anesthesia, through laparotomy in 51 patients, through laparoscopy in 4 patients. Resection of sigmoid colon was associated to rectopexy in four patients. RESULTS Mortality rate was 0 and morbidity rate 12%. Mean hospital stay duration was 13.5 days. Mean follow-up was 63 months and at the end of the study, four patients (7%) had recurrence, 5/25 patients had still incontinence; 55% of the patients had unchanged postoperative bowel function, 22% described improvement (including the four patients with resection-rectopexy) but 38% (21/55) suffered from postoperative 'constipation'. The rate of 'constipation' induced or majored by rectopexy was 22% but the functional trouble described appeared often complex. CONCLUSION Posterior Orr-Loygue rectopexy is the operation recommended for patients in good general condition, especially if fecal incontinence is associated. In the course of the procedure, preservation of pelvic nerves and hypogastric plexus, and positioning of the strips not too tight between the anterolateral rectal walls and promontory must be emphasized. Posterior Orr-Loygue rectopexy is contraindicated when general anesthesis is too risky and when bowel dysfunction and/or rectal exoneration dysfunction are present.
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Barrier A, Martel P, Gallot D, Dugue L, Sezeur A, Malafosse M. Long-term functional results of colonic J pouch versus straight coloanal anastomosis. Br J Surg 1999; 86:1176-9. [PMID: 10504373 DOI: 10.1046/j.1365-2168.1999.01224.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND There are very few studies evaluating the long-term functional outcome of coloanal anastomoses. This retrospective study aimed to compare long-term functional results of straight and colonic J pouch anastomoses. METHODS Thirty-seven patients, 25 with a straight anastomosis and 12 with a J pouch anastomosis, responded to a standardized telephone questionnaire. The mean time since surgery was 10 (range 4-18) years. RESULTS The mean daily stool frequency was similar in both groups of patients (1.1 in patients with a reservoir, 1.5 in patients with a straight anastomosis). In both groups, two-thirds of patients had perfect continence or limited gas incontinence. Faecal incontinence was reported by two patients with a straight anastomosis and one patient with a pouch. Nocturnal stools and fragmentation were slightly more frequent in patients with a straight anastomosis. Half of the patients regularly used medication. Thirty-five of the 37 patients reported satisfaction with functional results. CONCLUSION Long-term functional results of coloanal anastomoses are satisfactory and, unlike early results, similar for both types of anastomosis. The functional benefit of a reservoir, seen in the first year after operation, is less evident with increasing time.
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Martel P, Joly P. [Cicatricial pemphigoid]. Ann Dermatol Venereol 1999; 126:639-43. [PMID: 10530358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Poujol S, Tilleul P, Astre C, Martel P, Fabbro M, Pinguet F. Effect of mitoxantrone liposomes on multidrug-resistant breast cancer cells. Anticancer Res 1999; 19:3327-31. [PMID: 10652629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
A major obstacle in efficacy of breast cancer chemotherapy is the emergence of multidrug resistance. We investigated modulation of multidrug resistance by liposome-encapsulated mitoxantrone in a drug resistant human breast MCF7R cell line and the influence of liposome composition. Neutral high phase-transition temperature and anionic low phase-transition temperature phospholipid liposomes, reduced the resistance factor from 142 to 15 and 38, respectively. The higher cytotoxicity obtained with mitoxantrone-encapsulation was not necessarily related to higher intracellular uptake. Our data suggest that liposomes, according to their lipid composition, may alter the P-glycoprotein function by plasma membrane stabilization and modulate multidrug resistance in human cancer.
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Sezeur A, Martella L, Abbou C, Gallot D, Schlienger M, Vibert JF, Touboul E, Martel P, Malafosse M. Small intestine protection from radiation by means of a removable adapted prosthesis. Am J Surg 1999; 178:22-5; discussion 25-6. [PMID: 10456697 DOI: 10.1016/s0002-9610(99)00112-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND A prosthesis has been designed to protect intestinal loops from radiation when postsurgical radiotherapy is necessary in cancer treatment. It is a silicone balloon that allows the small bowel to be pushed back away from the radiation field, and it is easily removed at the conclusion of radiotherapy. METHODS The device was used in 22 patients: 5 retroperitoneal tumors and 17 pelvic cancers. After surgical resection of the tumor, the device is placed either in the retroperitoneal area or in the pelvic cavity. A polyglactine 910 mesh is placed between the spacer and the bowel to prevent incarceration of the loops. The prosthesis can be filled or emptied between each radiation course and finally removed by means of a short incision under local or locoregional anesthesia. RESULTS The tolerance of the small intestine to radiation therapy has been satisfactory in each case, with a mean follow-up of 24.5 months (range 10 to 73). No modification of biological parameters was observed during the pelvic radiation therapy at 30, 45, and 65 Gy. CONCLUSION This device should appears to efficient for prevention of bowel injury during postsurgical radiation in successful treatment of abdominal, pelvic, or retroperitoneal tumors when indicated.
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Guillemin F, Blanc-Vincent MP, Stoeckele E, Rivoire M, Labreze L, Martel P. [Standards-options-recommendations in oncology]. ANNALES DE CHIRURGIE 1999; 53:348-56. [PMID: 10327701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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97
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Sézeur A, de Gramont A, Touboul E, Beaugerie L, Gallot D, Cattan S, Betton PO, Carbonnel F, Martel P, Tarlat E, Louvet C, Cosnes J, Housset M, Malafosse M. [Contribution of telemedicine applied to digestive cancer]. GASTROENTEROLOGIE CLINIQUE ET BIOLOGIQUE 1999; 23:342-7. [PMID: 10384336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
AIM OF THE STUDY Telemedicine offers new possibilities for multidisciplinary care of cancer patients, allowing direct communications between different, complementary and geographically distant specialists. Thus, it is possible to form oncology committees in small hospitals where all specialties are not represented. The purpose of this study was to evaluate the medical and economic impact of visioconferences in the therapeutic management of cancer patients without access to oncology centers. MATERIALS A telemedicine network was created in Paris between the General Surgery and Gastroenterology services of Rothschild Hospital and the services of Oncology at Saint-Antoine Hospital and Radiotherapy at Tenon Hospital. The three hospitals were connected simultaneously (multipoint) by visioconference and thus constituted a pluridisciplinary oncology committee of radiotherapy, chemotherapy and surgery. Eighty seven cases were evaluated in 27 staff conferences. In 48 cases, this consisted of re-evaluating therapeutic decisions made in surgery or gastroenterology, and in 39 cases opinions were requested by surgery (18), gastroenterology (14) or oncology departments (7). RESULTS In only 34/87 cases therapeutic agreement was reached directly. The 53 other cases (60.9%) were debated. In fact, all 39 requests for opinion in difficult therapeutic decisions resulted in consensus. Among the 48 re-evaluations, disagreement persisted in one case between the surgeon in charge of the patient and the chemotherapist. Importantly, in 13 of 48 cases (27%), the discussion modified the therapeutic protocol initially proposed. The average cost was 118 French Francs per case and per center. Total initial investment was 334,762 French Francs, but the price of some equipment has already dropped from 30 to 60%. CONCLUSION In our study, the visioconference improved management of cancer patients for a weak working cost.
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Martel P, Malafosse M, Gallot D. [Right colectomy in cancer: technique of vessel ligation and extent and performance of lymph node excision]. ANNALES DE CHIRURGIE 1999; 53:527-8. [PMID: 10427846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
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Bardon S, Picard K, Martel P. Monoterpenes inhibit cell growth, cell cycle progression, and cyclin D1 gene expression in human breast cancer cell lines. Nutr Cancer 1998; 32:1-7. [PMID: 9824849 DOI: 10.1080/01635589809514708] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Monoterpenes are found in the essential oils of many commonly consumed fruits and vegetables. These compounds have been shown to exert chemopreventive and chemotherapeutic activities in mammary tumor models and represent a new class of breast cancer therapeutic agents. In this study, we investigated the effects of limonene and limonene-related monoterpenes, perillyl alcohol and perillic acid, on cell growth, cell cycle progression, and expression of cyclin D1 cell cycle-regulatory gene in T-47D, MCF-7, and MDA-MB-231 breast cancer cell lines. Our results revealed that limonene-related monoterpenes caused a dose-dependent inhibition of cell proliferation. Of the three monoterpenes tested, perillyl alcohol was the most potent and limonene was the least potent inhibitor of cell growth. The enantiomeric composition of limonene and perillyl alcohol did not interfere with their effect on cell growth. Sensitivity of breast cancer cell lines to monoterpenes was in the following order: T-47D > MCF-7 > MDA-MB-231. Growth inhibition induced by perillyl alcohol and perillic acid was associated with a fall in the proportion of cells in the S phase and an accumulation of cells in the G1 phase of the cell cycle. Finally, we showed that the effects of limonene-related monoterpenes on cell proliferation and cell cycle progression were preceded by a decrease in cyclin D1 mRNA levels.
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Anthonsen HW, Baptista A, Drabløs F, Martel P, Petersen SB, Sebastião M, Vaz L. Lipases and esterases: a review of their sequences, structure and evolution. BIOTECHNOLOGY ANNUAL REVIEW 1998; 1:315-71. [PMID: 9704093 DOI: 10.1016/s1387-2656(08)70056-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This chapter aims to provide a brief review on the enzyme family of lipases and esterases. The sequences, 3D structures and pH dependent electrostatic signatures are presented and analyzed. Since the family comprises more than 100 sequences, we have tried to focus on the most interesting features from our perspective, which translates into finding similarities and differences between members of this family, in particular in and around the active sites, and to identify residues that are partially or totally conserved. Such residues we believe are either important for maintaining the structural scaf-fold of the protein or to maintain activity or specificity. The structure function relationship for these proteins is therefore of central interest. Can we uniquely identify a protein from this large family of sequences--and if so, what is the identifier? The protein family displays some highly complex features: many of the proteins are interfacially activated, i.e. they need to be in physical contact with the aggregated substrate. Access to the active site is blocked with either a loop fragment or an alpha-helical fragment in the absence of interfacial contact. Although the number of known, relevant protein 3D structures is growing steadily, we are nevertheless faced with a virtual explosion in the number of known or deduced amino acid sequences. It is therefore unrealistic to expect that all protein sequences within the foreseeable future will have their 3D structure determined by X-ray diffractional analysis or through other methods. When feasible the gene and/or the amino acid sequences will be analyzed from an evolutionary perspective. As the 3D folds are often remarkably similar, both among the triglyceride lipases as well as among the esterases, the functional diversities (e.g. specificity) must originate in differences in surface residue utilization, in particular of charged residues. The pH variations in the isopotential surfaces of some of the most interesting lipases are presented and a qualitative interpretation proposed. Finally we illustrate that NMR has potential for becoming an important tool in the study of lipases, esterases and their kinetics.
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