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Well-differentiated extraskeletal chondrosarcoma: about a new case. Pathologica 2018; 110:103-105. [PMID: 30546146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
Extraskeletal chondrosarcoma is a rare malignant tumor. The well differentiated histological type, which is found primary in soft tissue, is extremely rare. This report describes the case of a 58-year-old woman presented with a large palpable mass in the right buttock. Imaging studies revealed a well-defined soft tissue mass, with extensive calcification. A histological examination after surgical resection confirmed the diagnosis of well-differentiated extraosseous chondrosarcoma. The outcome was favorable, without recurrence or metastasis.
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Nutritional quality assessment of two potato intraspecific somatic hybrid lines. QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS 2017. [DOI: 10.3920/qas2016.1034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Summaries of the papers of the 4th National Congress of the Tunisian Society of Medical Oncology attached to the 4th Maghreb Congress of Oncology. LA TUNISIE MEDICALE 2017; 95:859-964. [PMID: 29873056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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4
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Le syndrome de Schimmelpenning-Feuerstein-Mims : à propos d’un cas. Arch Pediatr 2015; 22:1157-62. [DOI: 10.1016/j.arcped.2015.07.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/22/2014] [Accepted: 07/02/2015] [Indexed: 10/23/2022]
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5
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Lésions glomérulaires minimes familiales. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.256] [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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6
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An unusual tumour of the lung. Pathologica 2015; 107:14-18. [PMID: 26591626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
We report a case of a 51-year-old woman with a solitary mast cell tumour of the lung, a rare neoplasm with only three previously-reported cases reported in the literature. Unlike previous cases, the tumour in the present case was bulky, measuring 14 cm in diameter and budding into the segmental bronchus. Histologically, it showed proliferation of typical metachromatic mast cells intermingled with undifferentiated cells with a ratio of 3:1. The neoplastic mast cells stained strongly with tryptase, CD117, CD68 and CD45, CD14 and CD33; whereas the undifferentiated cells lacked all these markers and expressed EMA and cytokeratin. Histological examination of bone marrow and laboratory data were unremarkable. To our knowledge, this is the fourth case of solitary extracutaneous mastocytoma of the lung. The differentiating features of this neoplasm and a review of literature are presented.
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BK virus-associated hemophagocytic syndrome in a renal transplant recipient. SAUDI JOURNAL OF KIDNEY DISEASES AND TRANSPLANTATION 2014; 25:610-4. [PMID: 24821160 DOI: 10.4103/1319-2442.132205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hemophagocytic syndrome (HPS) is a life-threatening hematological disorder in immunocompromised patients. Reactive HPS is observed in patients with systemic infection, neoplasia or auto-immune diseases. It is a rare hematological disorder after renal transplantation and must be suspected when fever and pancytopenia are seen in association with viral infections. HPS is usually associated with infection with the Cytomegalovirus and Epstein-Barr viruses. We report here a case of BK-virus-associated HPS.
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Uterine tumour resembling ovarian sex cord tumours presenting as multiple endometrial and cervical uterine polyps: a case report. Pathologica 2014; 106:73-76. [PMID: 25291872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND Uterine tumours resembling ovarian sex-cord tumours (UTROSCT) are very rare, benign uterine tumours, composed solely of sex cord elements. These tumours have a polyphenotypic immunophentype that favours a derivation from uterine mesenchymal stem cells. CASE REPORT A 43-year-old female presented with recurrent vaginal bleeding. On hysteroscopy, she had multiple endometrial and cervical polyps that were removed endoscopically. Histologically, the specimen contained epithelioid cells arranged in tubules, trabeculae and anastomosing cords, without significant cellular atypia or mitotic activity. Immunohistochemical studies were performed. The tumour was found to be diffusely positive for vimentin, calretinin and desmin, focally positive for cytokeratin, CD99 and inhibin and negative for chromogranin and CD10. A subsequent total hysterectomy was performed and revealed neoplastic infiltration of the myometrium. CONCLUSION A polyphenotypic immunophenotype is a characteristic feature of UTROSCT, and may be helpful in diagnosis and in exclusion of other lesions. Familiarity with this tumour by gynaecologists and pathologists is essential to avoid misdiagnosis:correct diagnosis of this neoplasm is important in patient management.
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Secondary oxalosis due to excess vitamin C intake: a cause of graft loss in a renal transplant recipient. SAUDI JOURNAL OF KIDNEY DISEASES AND TRANSPLANTATION 2014; 25:113-6. [PMID: 24434393 DOI: 10.4103/1319-2442.124518] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Renal oxalate deposition can be seen with primary hyperoxaluria, malabsorptive states, ethylene glycol toxicity and, rarely, with excessive vitamin C ingestion. We report a case of secondary hyperoxaluria in which the diagnosis was not considered initially because there was no past history of urinary calculi and no evidence of nephrocalcinosis on plain X-ray of the abdomen and ultrasonography. The disease was detected and diagnosed only after kidney transplantation. Secondary oxalosis can cause graft loss or delayed graft function. Biopsy of the allograft should be carefully examined for oxalate deposits even in the absence of a family history. When oxalosis is diagnosed, intensifying hemodialysis (HD) to eliminate calcium oxalate can help in the recovery of renal function in some cases. Systematic vitamin C supplementation in HD patients should be avoided as it can be a cause of secondary oxalosis.
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New C1q mutation in a Tunisian family. Mol Immunol 2013. [DOI: 10.1016/j.molimm.2013.05.120] [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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11
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Wnt signaling is involved in human articular chondrocyte de-differentiation in vitro. Biotech Histochem 2013; 89:29-40. [PMID: 23901947 DOI: 10.3109/10520295.2013.811285] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Osteoarthritis is the most prevalent form of arthritis in the world. Certain signaling pathways, such as the wnt pathway, are involved in cartilage pathology. Osteoarthritic chondrocytes undergo morphological and biochemical changes that lead to chondrocyte de-differentiation. We investigated whether the Wnt pathway is involved in de-differentiation of human articular chondrocytes in vitro. Human articular chondrocytes were cultured for four passages in the presence or absence of IL-1 in monolayer or micromass culture. Changes in cell morphology were monitored by light microscopy. Protein and gene expression of chondrocyte markers and Wnt pathway components were determined by Western blotting and qPCR after culture. After culturing for four passages, chondrocytes exhibited a fibroblast-like morphology. Collagen type II and aggrecan protein and gene expression decreased, while collagen type I, matrix metalloproteinase 13, and nitric oxide synthase expressions increased. Wnt molecule expression profiles changed; Wnt5a protein expression, the Wnt target gene, c-jun, and in Wnt pathway regulator, sFRP4 increased. Treatment with IL-1 caused chondrocyte morphology to become more filament-like. This change in morphology was accompanied by extinction of col II expression and increased col I, MMP13 and eNOS expression. Changes in expression of the Wnt pathway components also were observed. Wnt7a decreased significantly, while Wnt5a, LRP5, β-catenin and c-jun expressions increased. Culture of human articular chondrocytes with or without IL-1 not only induced chondrocyte de-differentiation, but also changed the expression profiles of Wnt components, which suggests that the Wnt pathway is involved in chondrocyte de-differentiation in vitro.
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The roles of canonical and non-canonical Wnt signaling in human de-differentiated articular chondrocytes. Biotech Histochem 2013; 89:53-65. [PMID: 23901950 DOI: 10.3109/10520295.2013.819123] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Osteoarthritis is the most prevalent form of arthritis in the world and it is becoming a major public health problem. Osteoarthritic chondrocytes undergo morphological and biochemical changes that lead to de-differentiation. The involvement of signaling pathways, such as the Wnt pathway, during cartilage pathology has been reported. Wnt signaling regulates critical biological processes. Wnt signals are transduced through at least three intracellular signaling pathways including the canonical Wnt/β-catenin pathway, the Wnt/Ca2 + pathway and the Wnt/planar cell polarity pathway. We investigated the involvement of the Wnt canonical and non-canonical pathways in human articular chondrocyte de-differentiation in vitro. Human articular chondrocytes were cultured through four passages with no treatment, or with sFRP3 treatment, an inhibitor of Wnt pathways, or with DKK1 treatment, an inhibitor of the canonical pathway. Chondrocyte-secreted markers and Wnt pathway components were analyzed using western blotting and qPCR. Inhibition of the Wnt pathway showed that the canonical Wnt signaling probably is responsible for inhibition of collagen II expression, activation of metalloproteinase 13 expression and regulation of Wnt7a and c-jun expression during chondrocyte de-differentiation in vitro. Our results also suggest that expressions of eNOS, Wnt5a and cyclinE1 are regulated by non-canonical Wnt signaling.
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AB0918 Auto-antibodies in patients with ankylosing spondylitis untreated with biologic therapy. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lymphoma presenting as a peritonsillar abscess. Eur Ann Otorhinolaryngol Head Neck Dis 2013; 130:337-9. [PMID: 23562230 DOI: 10.1016/j.anorl.2012.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 08/29/2012] [Accepted: 09/10/2012] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Peritonsillar abscess is generally seen as a complication of acute tonsillitis in young subjects. It may, however, in rare cases reveal a malignant tumor of the tonsil: most often squamous cell carcinoma or, more rarely, lymphoma. We report a rare case of tonsillar lymphoma revealed by a peritonsillar abscess. CASE REPORT A 66-year-old woman, without history of recurrent tonsillitis, was admitted for right peritonsillar abscess with fever. She underwent incision-drainage of the abscess with 10 days' intravenous antibiotics. As tonsillar hypertrophy persisted, tonsillectomy was performed; histology with immunohistochemical examination found tonsillar lymphoma. DISCUSSION/CONCLUSION Possible tumoral etiology should be considered in any peritonsillar abscess occurring in an atypical subject. Acute-stage tonsillectomy enables early diagnosis.
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Une longue survie après traitement d’un carcinome épidermoïde de la vésicule biliaire. Cancer Radiother 2013; 17:58-61. [DOI: 10.1016/j.canrad.2012.12.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 12/12/2012] [Accepted: 12/14/2012] [Indexed: 11/15/2022]
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16
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Latent tuberculosis: Diagnostic value of QuantiFERON and genetic association to the SNP INFG+874 T/A. Front Immunol 2013. [DOI: 10.3389/conf.fimmu.2013.02.00190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Profil des manifestations cliniques et immunologiques associées au syndrome des antiphospholipides. Rev Med Interne 2012. [DOI: 10.1016/j.revmed.2012.10.130] [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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18
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[Antisynthetase syndrome: a report of four cases and literature review]. REVUE DE PNEUMOLOGIE CLINIQUE 2012; 68:351-360. [PMID: 23062471 DOI: 10.1016/j.pneumo.2012.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 07/12/2012] [Accepted: 07/19/2012] [Indexed: 06/01/2023]
Abstract
The antisynthetase syndrome (ASS) includes inflammatory myopathy (polymyositis or dermatomyositis), interstitial lung disease (ILD), arthritis, Raynaud's phenomenon, and mechanic's hands, associated with antibodies against aminoacyl-tRNA-synthetases, the most well-recognized being the anti-Jo1 antibody (anti-histidyl-tRNAsynthetase). We report four cases of antisynthetase syndrome and review the clinical characteristics and prognosis factors dominated by ILD. We report the cases of four women with a mean age of 42 years (28-62 years). The interstitial lung disease was found in four cases and was objectified by CT-scan in all cases. The pulmonary symptoms were consisted of dyspnea (one case) and respiratory distress (one case). The anti-Jo1 antibodies were present in the four patients. The myopathy was concomitant with pulmonary involvement (two cases), preceded it in 6 months (one case) and in the course of evolution and after 1 month (one case). All patients received corticosteroid treatment. The immunosuppressive treatment was necessary for two patients because of the severity of the pulmonary involvement. The outcome was favorable in two patients, partially favorable in a patient who presented pulmonary fibrosis. However, one patient died after developing brain abscesses.
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Positivité des anticorps antiphospholipides, dans quelles situations cliniques ? Étude rétrospective de 185 cas. Rev Med Interne 2012. [DOI: 10.1016/j.revmed.2012.10.135] [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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Abstract
The physiopathology of idiopathic achalasia is still unknown. The description of circulating antimyenteric autoantibodies (CAA), directed against enteric neurons in sera of patients, suggests an autoimmune process. Recent data showed controversies according to the existence and the significance of CAA. The aims of this study were to investigate whether CAA are detected in Tunisian patients with idiopathic achalasia and to look for associated clinical or manometrical factors with CAA positivity. Twenty-seven patients with idiopathic achalasia and 57 healthy controls were prospectively studied. CAA were assessed by indirect immunofluorescence on intestinal monkey tissue sections. Western blot on primate cerebellum protein extract and dot technique with highly purified recombinant neuronal antigens (Hu, Ri, and Yo) were further used to analyze target antigens of CAA. CAA were significantly increased in achalasia patients compared with controls when considering nuclear or cytoplasmic fluorescence patterns. (33% vs. 12%, P = 0.03 and 48% vs. 23%, P = 0.001 respectively). By immunoblot analysis, CAA did not target neuronal antigens, however 52/53 and 49 kDa bands were consistently detected. CAA positivity was not correlated to specific clinical features. The results are along with previous studies demonstrating high CAA prevalence in achalasia patients. When reviewing technical protocols and interpretation criteria, several discrepancies which could explain controversies between studies were noted.
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Plasmocytomes extraosseux de la tête et du cou. Cancer Radiother 2012. [DOI: 10.1016/j.canrad.2012.07.152] [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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22
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[Clinical, radiographic and biologic particularities of ankylosing spondylitis in Tunisian patients according to the presence or the absence of the HLA B27 and its sub-types]. REVUE MEDICALE DE LIEGE 2012; 67:430-436. [PMID: 22984764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To assess the clinical, radiographic and biologic particularities of ankylosing spondylitis (AS) in Tunisian patients according to HLA B27 and its sub-types statute. This was a case-control study that included 100 patients (85 males/15 females) with AS according to the modified New York criteria. Demographic, clinical, AS specific indexes, radiographic and biologic parameters were determined. HLA-B and B27 subtypes typing of all subjects were performed by PCR-SSP. Patients mean age was 38.4 years +/- 12.6 HLA-B27 was found in 62% of patients. The comparison of B27 positive and B27 negative patients revealed a correlation of B27 with age, male gender, family history of spondylarthropathies, age at disease onset, acute onset of the disease, inaugural spinal involvement, uveitis, bilateral and destructive hip arthritis as well as a high score of mSASSS. The most frequent sub-types of HLA B27 were B*2702 (49.2%) and B*2705 (36.3%). No significant difference of the clinical presentation of the disease or severity factors was found among these patients. This study confirmed the contribution of the HLA B27 to the determination of the clinical presentation of AS. The variability of factors linked to B27 may be explained by the polygenic model of the disease.
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Expression patterns of Notch receptors and their ligands in human osteoarthritic and healthy articular cartilage. Tissue Cell 2012; 44:182-94. [PMID: 22455903 DOI: 10.1016/j.tice.2012.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 03/02/2012] [Accepted: 03/02/2012] [Indexed: 11/17/2022]
Abstract
Notch pathway plays a pivotal role in cell fate determination. There is much interest surrounding its therapeutic potential, in osteoarthritis, but the expression profile of Notch-related molecules, as well as their relation with cartilage pathological parameters, remains unclear. The purpose of our study is to analyze the expression pattern of Notch family members, type II and type I collagen, in normal (healthy) and osteoarthritic human knee cartilage. Osteoarthritic cartilages were obtained from 3 patients undergoing a total knee replacement. Macroscopically normal cartilage was dissected from 3 human knees at the time of autopsy or surgery. Immunohistochemical staining was performed using Notch1,2,3 and 4, Delta, Jagged, type II collagen and type I collagen antibodies. In healthy cartilage, type II collagen was abundantly expressed while type I was absent. This latter increased proportionally to the osteoarthritic grade. Type II collagen expression remained intense in osteoarthritic cartilage. In healthy cartilage as well as in cartilage with minor lesions, Notch family member's proteins were not or just weakly expressed at the surface and in the cells. However, Notch molecules were over-expressed in osteoarthritic cartilage compared to healthy one. This expression pattern was different according to the cartilage zone and the severity of OA. Our data suggest that Notch signaling is activated in osteoarthritic cartilage, compared to healthy cartilage, with a much more abundant expression in the most damaged areas.
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Impact diagnostique du dépôt isolé des fractions du complément au niveau de la jonction dermo-épidermique en immunofluorescence directe cutanée. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.10.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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25
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Carcinomes basocellulaires de l’extrémité céphalique : étude anatomoclinique de 282 cas. Ann Pathol 2011. [DOI: 10.1016/j.annpat.2011.09.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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26
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La cytologie du liquide synovial : aide précieuse au diagnostic des maladies articulaires. Ann Pathol 2011. [DOI: 10.1016/j.annpat.2011.09.074] [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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Les ANCA sont-il plus fréquents au cours des GNEC pauci-immunes du diabétique ? Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Aspect étiologique des glomérulonéphrites extra-membraneuses : à propos de 145 cas. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.397] [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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Pemphigus vegetans: a clinical, histological, immunopathological and prognostic study. J Eur Acad Dermatol Venereol 2010; 25:1160-7. [DOI: 10.1111/j.1468-3083.2010.03939.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Carcinome adénoïde kystique primitif du poumon : à propos d’un cas. ONCOLOGIE 2010. [DOI: 10.1007/s10269-008-0847-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Mélanome primitif de la choroïde: étude de 12 cas. ONCOLOGIE 2010. [DOI: 10.1007/s10269-010-1965-9] [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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Abstract
BACKGROUND Pemphigus is a life-threatening autoimmune blistering disease mediated by autoantibodies against adhesion molecule of the skin. Its concurrence with systemic and organ-specific autoimmune disease was described in case reports. OBJECTIVES To evaluate the presence of a broad spectrum of organ-specific and non-organ-specific autoantibodies other than anti-desmoglein antibodies in pemphigus patients. PATIENTS AND METHODS Serum samples were obtained from 105 pemphigus foliaceus (PF) patients, 51 pemphigus vulgaris (PV) patients and 50 controls. Both indirect immunofluorescence assay and ELISA were used to assess the presence of autoantibodies related to connective tissue diseases, autoimmune hepatitis, vasculitis, rheumatoid arthritis, coeliac disease, diabetes and thyroiditis. RESULTS Significant difference was observed between the three groups for anti-thyroglobulin antibodies in the pemphigus foliaceus group (18% vs. 4%, P=0.03). A significantly higher occurrence of IgM anti-cardiolipin (P=0.03), IgG anti-reticulin (P=0.01) and IgG anti-gliadin antibodies (P=0.008) were observed in the PV group. Cases with more than four autoantibodies were frequently positives for both anti-desmoglein 1 and anti-desmoglein 3. CONCLUSION Autoantibodies other than anti-desmoglein antibodies are not rare in pemphigus patients. Clinical and serological follow-up of pemphigus patients with positive autoantibodies are needed to clarify their impact in disease evolution.
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Expression of Notch family members in cultured murine articular chondrocytes. Biotech Histochem 2010; 84:313-20. [PMID: 19562571 DOI: 10.3109/10520290903054382] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The Notch family is involved in cell differentiation during embryogenesis. Osteoarthritic chondrocytes undergo morphological and biochemical changes leading to the de-differentiation process. In the study reported here, we were interested in the involvement of the Notch pathway in murine articular chondrocyte de-differentiation. Articular chondrocytes were subjected to several cell culture passages and treated with or without a Notch inhibitor, N-[N-(3, 5-difluorophenacetyl-L-alanyl)]-S-phenylglycine t-Butyl Ester (DAPT). Chondrocyte morphology was studied using optical microscopy. Immunocytochemistry and immunoblot were performed to study the expression of collagens and Notch family members. Without DAPT treatment, chondrocyte de-differentiation resulted in fibroblast-like morphology. This was confirmed by immunocytochemical staining and immunoblot analysis, which showed an increase in collagen type I (col I) and a decrease in collagen type II (col II) expression. With DAPT treatment, de-differentiation was delayed. Immunocytochemistry and immunoblot analysis showed during the first passages inhibition of col II expression, which then was re-instituted during the last passage, suggesting chondrocyte re-differentiation. In the study reported here, we showed that inhibition of the Notch receptor not only delayed the de-differentiation process, but also chondrocyte re-differentiation, which confirms the involvement of the Notch pathway in chondrocyte de-differentiation.
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P183 - Insuffisance surrénalienne : étude rétrospective tunisienne à propos de 92 cas. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70583-2] [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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P133 - Le lupus érythémateux systémique de l’enfant (LES) : étude de 14 observations. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70534-0] [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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CL007 - Déficit en hormone de croissance par syndrome d’interruption de la tige pituitaire : à propos de 23 cas. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70223-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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P018 - Hypoparathyroïdie chez l’enfant à propos de 7 cas. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70419-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Marqueurs de la maladie cœliaque chez une patiente présentant un syndrome de Gougerot-Sjögren. Rev Med Interne 2010. [DOI: 10.1016/j.revmed.2010.03.098] [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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CL173 - Aspects cliniques et radiologiques de la neurofibromatose type 1. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70390-0] [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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Abstract
INTRODUCTION Pulmonary fibrosis secondary to antineutrophil cytoplasmic antibodypositive vasculitis is rarely reported. Most cases have occurred in association with microscopic polyangiitis. CASE REPORT We report the case of an 82-year-old man presenting with pulmonary fibrosis. The CT scan showed honeycombing and traction bronchiectasis with peripheral and basal predominance. The diagnosis of Wegener's granulomatosis was based on the association of positive antineutrophil cytoplasmic antibodies, urinary sediment abnormalities and renal biopsy findings. CONCLUSION We emphasize, through this case, the rarity of interstitial fibrosis as a pulmonary manifestation of vasculitis and we discuss the pathogenesis of this association.
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[Stromal tumor of the lesser omentum: a case report]. ACTA ACUST UNITED AC 2010; 34:134-6. [PMID: 20116950 DOI: 10.1016/j.gcb.2009.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Revised: 04/18/2009] [Accepted: 04/20/2009] [Indexed: 11/16/2022]
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Ketosis-onset diabetes in Tunisian adults: immunological markers and beta-cell function. EASTERN MEDITERRANEAN HEALTH JOURNAL 2010. [DOI: 10.26719/2010.16.1.70] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ketosis-onset diabetes in Tunisian adults: immunological markers and beta-cell function. EASTERN MEDITERRANEAN HEALTH JOURNAL = LA REVUE DE SANTE DE LA MEDITERRANEE ORIENTALE = AL-MAJALLAH AL-SIHHIYAH LI-SHARQ AL-MUTAWASSIT 2010; 16:70-74. [PMID: 20214161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The aim of this study in Tunisia was to classify ketosis-onset diabetes in adult patients. All patients aged > 30 years without known diabetes, presenting with ketosis and admitted to our department were studied. Patients with secondary or gestational diabetes and those on corticoid therapy or with coinciding infection were excluded. The data included clinical characteristics, immunological markers and beta-cell function. Of the 63 patients, islet-cell antibodies were present in 27.0%, glutamic acid decarboxylase antibodies in 25.4% and thyrosin phosphatase antibodies in 19.0%. Beta-cell functional reserve was preserved in 54.0%. Our results confirm that patients with ketosis-onset diabetes mellitus in adulthood are a heterogeneous group.
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Cancer papillaire sur goitre dyshormonogénétique. ANNALES D'ENDOCRINOLOGIE 2009; 70:485-8. [DOI: 10.1016/j.ando.2009.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 07/31/2009] [Accepted: 08/05/2009] [Indexed: 11/30/2022]
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Anti-desmoglein 1 antibodies in healthy related and unrelated subjects and patients with pemphigus foliaceus in endemic and non-endemic areas from Tunisia. J Eur Acad Dermatol Venereol 2009; 23:1073-8. [DOI: 10.1111/j.1468-3083.2009.03265.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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[Mandibular desmoplastic fibroma: diagnosis and therapeutics difficulties]. REVUE DE STOMATOLOGIE ET DE CHIRURGIE MAXILLO-FACIALE 2009; 110:239-241. [PMID: 19447456 DOI: 10.1016/j.stomax.2009.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2008] [Revised: 02/18/2009] [Accepted: 03/02/2009] [Indexed: 05/27/2023]
Abstract
INTRODUCTION The desmoplastic fibroma is a rare bone tumor, characterized by aggressive local infiltration, with frequent recurrence. The most common site is the mandible. Radioclinical signs are not specific and the histological diagnosis may be difficult. CASE A 16 year-old male patient consulted for a painless and hard left mandibular swelling, without inferior alveolar nerve disorders. The tumor extended from tooth 31 to tooth 35, the mucosa was healthy. The panoramic view showed a multilocular osteolytic lesion with dental root resorption. CT scan showed expansion of bony cortex with rupture of the outer cortical. The biopsy indicated a desmoplastic fibroma or a fibrosarcoma. A second histological analysis combined with an immuno-histochemical study proved the diagnosis of desmoplastic fibroma. DISCUSSION The desmoplastic fibroma has a polymorphous symptomatology. Radiological signs are unspecific. Anatomopathology combined with immuno-histochemistry can prove the diagnosis and guide the treatment.
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Tunisian endemic pemphigus foliaceus is associated with the HLA-DR3 gene: anti-desmoglein 1 antibody-positive healthy subjects bear protective alleles. Br J Dermatol 2009; 161:522-7. [DOI: 10.1111/j.1365-2133.2009.09207.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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