We report here the case of a 55-year-old man from Mali, who presented with abdominal pain. Radiological exploration revealed an ileo-colonic mass surrounding the appendix. A biopsy was taken and on histology, transmural granulomatous inflammation of numerous eosinophils, lymphocytes, plasmocytes and giant cells was seen.
View Article and Find Full Text PDFBackground: Corneal intraepithelial dyskeratosis is an extremely rare condition. The classical form, affecting Native American Haliwa-Saponi tribe members, is called hereditary benign intraepithelial dyskeratosis (HBID). Herein, we present a new form of corneal intraepithelial dyskeratosis for which we identified the causative gene by using deep sequencing technology.
View Article and Find Full Text PDFMany studies have reported that most invasive anal carcinomas contain high-risk human papillomaviruses (HPVs), HPV16 being the most prevalent type. This study aimed to investigate HPV status and cellular biomarkers in invasive anal cancers. HPV genotype distribution was determined in 76 anal cancers by the INNO-LiPA assay (Innogenetics, Gent, Belgium).
View Article and Find Full Text PDFUnlabelled: Half of patients with KRAS wild-type colorectal cancer do not benefit from adding anti-epithelial growth factor receptor (EGFR) to standard chemotherapy regimens. This retrospective study was performed in 94 patients with metastatic colorectal cancer (mCRC) treated in the second line with cetuximab and chemotherapy. Signal transducer and activator of transcription 3 (STAT3) phosphorylation in tumor cells was correlated with decreased median progression-free survival and overall survival (OS).
View Article and Find Full Text PDFIntroduction: Endothelial dysfunction (ED) participates to atherogenesis associated to rheumatoid arthritis. We recently reported increased arginase activity/expression in vessels from adjuvant-induced arthritis (AIA) rats. In the present study, we investigated the effects of a curative treatment with the arginase inhibitor Nw-hydroxy-nor-L-arginine (nor-NOHA) on vascular dysfunction in AIA rats.
View Article and Find Full Text PDFObjectives: To describe cases of new onset of inflammatory bowel disease (IBD) in patients with inflammatory rheumatic disease (IRD) receiving anti-TNF-α therapy.
Methods: A call for observations of such cases was sent to members of the French "Club rhumatismes et inflammation". Only patients without intestinal symptoms before introduction of anti TNF-α agents were included.
Background: Hepatocellular carcinoma (HCC) is the most common primary liver cancer, usually arising after years of chronic liver inflammation that could result from viral infections such as hepatitis B virus (HBV) and hepatitic C virus (HCV) infections. Human cytomegalovirus (HCMV) infects primary human hepatocytes and remains an important cause of morbidity in immunocompromised persons where it may manifest as symptomatic end-organ disease including hepatitis. The goal of the present study was to determine a potential correlation between HCMV infection and the appearance of HCC.
View Article and Find Full Text PDFThe analysis of KRAS mutations has become a prerequisite for anti-epidermal growth factor receptor therapy in patients with metastatic colorectal cancers. KRAS mutations are associated with resistance to treatment by monoclonal antibodies such as cetuximab and panitumumab and thus are correlated with a shorter progression-free survival. BRAF mutations also may play a role in treatment decisions.
View Article and Find Full Text PDFPurpose: Investigate the genotype-phenotype correlations for five TGFBI (transforming growth factor, beta-induced) mutations including one novel pathogenic variant and one complex allele affecting the fourth FAS1 domain of keratoepithelin, and their potential effects on the protein's structure.
Methods: Three unrelated families were clinically diagnosed with lattice corneal dystrophy (CD) and one with an unclassified CD of Bowman's layer. Mutations in the TGFBI gene were detected by direct sequencing, and the functional impact of each variant was predicted using in silico algorithms.
The role of natural killer group 2, member D receptor (NKG2D)-expressing natural killer (NK) cells in tumor immunosurveillance is now well established. Nevertheless, tumor progression occurs despite tumor immunosurveillance, leading to cancer persistence in immunocompetent hosts. STAT3 plays a pivotal role both in oncogenic functions and in immunosuppression.
View Article and Find Full Text PDFBackground: Liquid-based cytology (LBC) for cervical cancer screening presents the advantage that cytological and virological investigations can be undertaken from the same specimen. Nevertheless, the fixative may alter DNA integrity and the sample may be inadequate for HPV DNA detection. The Novaprep(®) Vial Test (NVT) (Novacyt, Vélizy-Villacoublay, France) is a new device dedicated to LBC which permits an automated cell spreading over slides and an automated cell sampling for molecular analyses.
View Article and Find Full Text PDFBackground: Signal transducer and activator of transcription 3 (STAT3) has been implicated as an oncogene in several neoplastic diseases. However, the biological effects of STAT3 have not been extensively studied in rectal carcinogenesis.
Aims: To evaluate STAT3 activation in advanced rectal cancers and its association with clinicopathological variables and prognosis.
There are few contradictory studies investigating the involvement of HPV in melanoma. We designed a controlled study to evaluate the HPV DNA prevalence in melanoma. One hundred patients with cutaneous malignant melanoma diagnosed between 2002 and 2006 were included.
View Article and Find Full Text PDFJ Clin Microbiol
November 2008
Integration of human papillomavirus (HPV) DNA into the host cell genome is a frequent event in cervical carcinogenesis, even though this phenomenon does not seem to be mandatory for cervical cancer development. Our objective was to describe the load and physical state of HPV type 16 (HPV16) DNA in a series of cervical samples representative of the natural history of cervical cancer. We used a combination of three real-time PCR assays targeting E6, E2, and albumin genes to calculate HPV16 load (E6 and albumin) and the E2/E6 ratio as a surrogate of integration.
View Article and Find Full Text PDFObjectives: Twist is considered as transcription factor that regulates epithelial mesenchymal transition (EMT) by at least inhibition of E-cadherin expression. EMT is a key event in the tumor invasion process. The purpose of this study is to investigate the expression of Twist but also those of E- and N-cadherin in human primary bladder tumor and to evaluate its prognostic value.
View Article and Find Full Text PDFBackground: Echinococcus multilocularis growth and persistent granuloma, which lead to the development of the severe parasitic disease alveolar echinococcosis (AE), might be caused by abnormal expression of stress-induced proteins, with subsequent abnormalities in T cell activation. Similar to its involvement in tumors, the NKG2D-major histocompatability complex class I chain-related molecules A and B (MICA/B) signaling system could be involved in host-parasite interactions; however, its involvement in helminthic diseases has never been studied.
Methods: We studied MICA/B, NKG2D, and transforming growth factor-beta (TGF-beta) expression on liver sections and measured levels of soluble MICA in serum samples obtained from patients with progressive AE.
Invasive cervical cancer (ICC) remains a significant cause of morbidity and mortality in France. Since human papillomavirus (HPV) is the necessary cause of ICC, the aim of this study was to assess the type-specific prevalence of HPV in ICC in France in order to locally evaluate the potential benefit of an HPV 16/18 L1 virus-like particles (VLP) vaccination. A total of 516 histological specimens collected in 15 centers were analyzed.
View Article and Find Full Text PDFEur J Dermatol
May 2007
We report a case of a cervical intraepithelial neoplasia associated with epidermodysplasia verruciformis human papillomavirus (HPV) type 5 and HPV type 16 in a human immunodeficiency virus-infected patient. Furthermore, epidermodysplasia verruciformis-like cutaneous eruptions after initiation of highly active antiretroviral therapy has never been described as a manifestation of an immune restoration syndrome.
View Article and Find Full Text PDFCongenital primary aphakia (CPA) is a rare developmental disorder characterized by the absence of lens, the development of which is normally induced during the 4th-5th wk of human embryogenesis. This original failure leads, in turn, to complete aplasia of the anterior segment of the eye, which is the diagnostic histological criterion for CPA. So far, the genetic basis for this human condition has remained unclear.
View Article and Find Full Text PDFWe report the case of an 8-year-old child, presenting a rhabdoid tumor of the liver with spontaneous rupture, revealed by an intra-abdominal bleeding with rapidly fatal course. This clinical and pathological report raises the problem of the differential diagnosis of primary malignant hepatic tumors of the child with no alpha-foetoprotein increase.
View Article and Find Full Text PDFPurpose: Loss of intercellular adhesion and increased cell motility promote tumor cell invasion and spreading. In bladder cancer, loss or reduced E-cadherin expression has been associated with poor survival, and aberrant expression of N-cadherin has been associated with the invasive phenotype of bladder carcinoma cells. The purpose of this study was to investigate whether N-cadherin expression was associated with the bladder tumor progression.
View Article and Find Full Text PDFLoss of intercellular adhesion facilitates tumor invasion. To clarify the relation between altered expression of cell adhesion molecules and progression of T1 superficial bladder tumors, 101 cases (71 T1 tumors, 30 T2/T3 tumors) were examined immunohistochemically for E-cadherin and alpha-, beta-, and gamma-catenins. A highly significant correlation was observed between the decreased expression of all molecules and increased TNM stage (P < .
View Article and Find Full Text PDFWe report a case of oncogenic osteomalacia (OO) in a 71-year-old man. The tumor, which was localized in the left lower mandible, was not found by CT, MRI, or 111-indium octreotide scintigraphy but was easily detected by FDG-PET. The use of this technique in OO has never been reported.
View Article and Find Full Text PDFLiver involvement in hereditary hemorrhagic telangiectasia may lead to high-output cardiac failure. Few data have been reported on orthotopic liver transplantation (OLT) for these patients. In this paper, we describe two patients treated by OLT as a salvage procedure for cardiac failure, and we review literature on this subject.
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