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sarcoma kaposi

Dayne Ashman, Liron Pantanowitz
No abstract text is available yet for this article.
March 1, 2018: International Journal of Surgical Pathology
Abbas Albayati, Burak Ozkan, Atilla Adnan Eyuboglu, Ahmet Cagri Uysal, Nilgun Markal Ertas, Mehmet Haberal
OBJECTIVES: Skin cancers are one of the most common malignancies in solid-organ transplant recipients. Increased age and immunosuppressive drug use are risk factors for posttransplant skin malignancies. We evaluated nonmelanocytic skin cancer incidence and development time in transplant patients. MATERIALS AND METHODS: We reviewed 1833 patients who received kidney, liver, and heart grafts between 1996 and 2016 at Baskent University. We excluded melanocytic skin cancers, premalignant lesions, and benign skin tumors...
March 2018: Experimental and Clinical Transplantation
Ayşe Tunçer Vural, Arzu Karataş Toğral, Ayşe Tülin Güleç, Mehmet Haberal
Solid-organ transplant recipients are at higher risk of developing Kaposi sarcoma, which is a multicentric vascular neoplasm of lymphatic endothelium-derived cells. Reducing doses of immunosuppressive drugs and switching from calcineurin inhibitors to the mammalian target of rapamycin inhibitor rapamycin have been suggested as an effective first-line treatment modality in most patients. Herein, we report a 64-year-old renal transplant recipient who developed multiple cutaneous and visceral Kaposi sarcoma lesions 2 months after transplant...
March 2018: Experimental and Clinical Transplantation
Alessia Gallo, Monica Miele, Ester Badami, Pier Giulio Conaldi
Patients following solid organ transplantation show a higher risk of developing cancer compared to the general population. Elevated risk is likely due to the interplay of a combination of factors, such as chronic inflammation, coexisting medical conditions, immunosuppressive regimen and persistent infection with oncogenic viruses. In addition, the tumor microenvironment plays a pivotal role in cancer progression, by driving recruitment and in situ differentiation of anti-inflammatory cells of the adaptive and innate immune system such as regulatory T cells, Th17, Dendritic Cells, Myeloid Derived Suppressor Cells, Type 2 Macrophages...
February 16, 2018: Cellular Immunology
Tate Tabtieng, Alexei Degterev, Marta M Gaglia
An important component of lytic infection by Kaposi's sarcoma-associated herpesvirus (KSHV) is the ability of the virus to evade the innate immune response, specifically type I interferon (IFN) responses that are triggered by recognition of viral nucleic acids. Inhibition of type I IFN responses by the virus promotes viral replication. Here we report that KSHV uses a caspase-dependent mechanism to block type I IFN, in particular IFNβ, responses during lytic infection. Inhibition of caspases during KSHV reactivation resulted in increased TBK1/IKKϵ-dependent phosphorylation of IRF3 as well as elevated levels of IFNβ transcription and secretion...
March 7, 2018: Journal of Virology
Mustafa Gürkan Yenice, Esra Varnalı, Kamil Gökhan Şeker, Ayşe Kavak, Volkan Tuğcu
Kaposi's Sarcoma (KS) is a malignancy that generally effects the skin, and can be systemic with internal organ involvement. It originates from the vascular endothelium. KS's relationship with human immunodeficiency virus (HIV) infection is well known. Isolated scrotal KS in the urogenital system is quite rare and scrotal KS in an HIV-negative patient is limited to a few cases. In this case report, the biopsy result from the violescent nodular lesions on the scrotum of the HIV-negative 81-year-old patient was found compatible with KS and a pathology was not detected in the systemic screening...
March 2018: Turkish Journal of Urology
Rong Liu, Jie Zhou, Shuhong Yang, Zhen Zhang
No abstract text is available yet for this article.
February 20, 2018: American Journal of Therapeutics
Abbas Agaimy, Sarina K Mueller, Thomas Harrer, Sebastian Bauer, Lester D R Thompson
Kaposi sarcoma (KS) of the head and neck area is uncommon with limited published case series. Our routine and consultation files were reviewed for histologically and immunohistochemically proven KS affecting any cutaneous or mucosal head and neck site. Ten males and one female aged 42-78 years (median, 51 years; mean, 52 years) were retrieved. Eight patients were HIV-positive and three were HIV-negative. The affected sites were skin (n = 5), oral/oropharyngeal mucosa (n = 5), and lymph nodes (n = 3) in variable combination...
March 5, 2018: Head and Neck Pathology
Kendra A Bussey, Ulrike Lau, Sophie Schumann, Antonio Gallo, Lisa Osbelt, Markus Stempel, Christine Arnold, Josef Wissing, Hans Henrik Gad, Rune Hartmann, Wolfram Brune, Lothar Jänsch, Adrian Whitehouse, Melanie M Brinkmann
Kaposi's sarcoma-associated herpesvirus (KSHV) is one of the few oncogenic human viruses known to date. Its large genome encodes more than 85 proteins and includes both unique viral proteins as well as proteins conserved amongst herpesviruses. KSHV ORF20 is a member of the herpesviral core UL24 family, but the function of ORF20 and its role in the viral life cycle is not well understood. ORF20 encodes three largely uncharacterized isoforms, which we found were localized predominantly in the nuclei and nucleoli...
March 2, 2018: PLoS Pathogens
Chang Su, Cuiying Peng, Ena Agbodza, Harrison X Bai, Yuqian Huang, Giorgos Karakousis, Paul J Zhang, Zishu Zhang
BACKGROUND: The utilization and impact of the studies published using the National Cancer Database (NCDB) is currently unclear. In this study, we aim to characterize the published studies, and identify relatively unexplored areas for future investigations. METHODS: A literature search was performed using PubMed in January 2017 to identify all papers published using NCDB data. Characteristics of the publications were extracted. Citation frequencies were obtained through the Web of Science...
March 2018: Medicine (Baltimore)
Javier Arellano, Mathias Yagnam, Martín Vidal, Yamile Corredoira
HIV infection can be manifested with different skin symptoms, which are sometimes considered infection markers. Erythrodermic psoriasis is a possible manifestation, which is a widespread form of psoriasis. We report a clinical case of a young man suspected of HIV infection due to a psoriatic erythroderma confirmed by biopsies, associated with Kaposi sarcoma. Afterwards, HIV infection was confirmed by serological tests. Antiretroviral therapy was started, with positive response at one month of treatment. Erythrodermic psoriasis can be considered a skin marker of HIV infection when occurs in previously healthy patients or in recalcitrant psoriasis...
December 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
Cornelia Feiterna-Sperling, Ioannis Anagnostopoulos, Jörg Hofmann, Renate Krüger
No abstract text is available yet for this article.
March 2018: Lancet Infectious Diseases
Christian Münz
The human γ-herpesviruses Epstein-Barr virus (EBV or HHV4) and Kaposi sarcoma-associated herpesvirus (KSHV or HHV8) are each associated with around 2% of all tumors in humans worldwide. However, investigations into their infection, oncogenesis, and immune responses that protect from the associated tumors have been hampered by the exclusive tropism of these pathogens for humans. Mice with reconstituted human immune system components (HIS mice) provide the unique opportunity to study persistent infection, virus associated lymphoma formation, and cell-mediated immune control of EBV and KSHV...
2018: Frontiers in Immunology
Ilaria Cavallari, Gloria Scattolin, Micol Silic-Benussi, Vittoria Raimondi, Donna M D'Agostino, Vincenzo Ciminale
Viruses must exploit the cellular biosynthetic machinery and evade cellular defense systems to complete their life cycles. Due to their crucial roles in cellular bioenergetics, apoptosis, innate immunity and redox balance, mitochondria are important functional targets of many viruses, including tumor viruses. The present review describes the interactions between mitochondria and proteins coded by the human tumor viruses human T-cell leukemia virus type 1, Epstein-Barr virus, Kaposi's sarcoma-associated herpesvirus, human hepatitis viruses B and C, and human papillomavirus, and highlights how these interactions contribute to viral replication, persistence and transformation...
2018: Frontiers in Microbiology
Tassapol Singalavanija, Somsanguan Ausayakhun, Chulaluck Tangmonkongvoragul
Human immunodeficiency virus (HIV) causes impairment to the human immune system which leads to immunocompromised conditions, including ocular complications. Several important HIV-associated disorders may involve the anterior segment, ocular surface, and adnexae organ such as dry eye, blepharitis which reduce quality of life of patients. In present, potent antiretroviral therapies HAART (highly active antiretroviral therapy) has improved the length and quality of life which may lead to an increased prevalence of anterior segment ocular disorders...
2018: PloS One
Julia Bohlius, Caroline Foster, Gita Naidu, Mazvita Sengayi, Anna Turkova
PURPOSE OF REVIEW: Adults living with HIV have an increased risk of malignancy yet there is little data for adolescents and young adults. We reviewed recently published cancer epidemiology, treatment, and outcome data for adolescents and young adults living with HIV (AYALHIV) aged 10 to less than 25 years between 2016 and 2017. RECENT FINDINGS: AYALHIV are at increased risk of developing cancer compared to their uninfected peers. Kaposi sarcoma and non-Hodgkin lymphoma occur most frequently with variation by geographical region...
February 15, 2018: Current Opinion in HIV and AIDS
L Ottria, D Lauritano, L Oberti, V Candotto, F Cura, A Tagliabue, L Tettamanti
HIV infection is one of the major health problem of the last decades. This disease causes a chronic infection that can lead to acquired immunodeficiency syndrome (AIDS). According to the Global AIDS update, released in 2016 by HIV department of World Health Organization (WHO) and by the Joint United Nations Program on HIV/AIDS (UNAIDS), at the end of 2015, 36.7 million people were infected by HIV: 34.9 million of these were adults and 1.8 million were children under 15 years of age. The same report shows that during 2015, 2...
January 2018: Journal of Biological Regulators and Homeostatic Agents
L Chtourou, L Ayedi, H Rejab, M Boudabous, L Mnif, A Grati, T Boudaouara, R Mzali, A Amouri, N Tahri
Kaposi sarcoma is an unusual tumor associated to a human herpes virus-8 infection involving the skin or internal organs. Iatrogenic Kaposi's sarcoma often occurs in patients receiving immunosuppressive therapy. So far, a few Kaposi's sarcoma cases have been reported in the literature associated with inflammatory bowel diseases. We report a 53-year-old male diagnosed with a severe refractory ulcerative colitis who was treated with corticosteroids and azathioprine. The patient underwent a colectomy after the failure of medical treatment...
December 2017: Pathologica
A Tulin Mansur, Gulsen Tukenmez Demirci, Eltaf A Ozbal Koc, Semsi Yildiz
Microvenular hemangioma (MVH) is an acquired, benign type of hemangioma that usually manifests itself as a solitary, slowly growing, red to violaceous, asymptomatic papule, plaque or nodule. It is typically located on the trunk or extremities of young adults. It can be difficult to differentiate MVH from other types of hemangioma and Kaposi sarcoma. Herein we report a case of MVH unusual for its location, age of onset, and morphologic features. A 62-year-old man complained of an asymptomatic, bluish-red discoloration on the tip of his nose that had been present for two years...
January 2018: Dermatology Practical & Conceptual
Christopher P Chen, Frank Chuang, Yoshihiro Izumiya
It is well known that spatial and temporal regulation of genes is an integral part of governing proper gene expression. Consequently, it is invaluable to understand where and when transcription is taking place within nuclear space and to visualize the relationship between episomes infected within the same cell's nucleus. Here, both immunofluorescence (IFA) and RNA-FISH have been combinedto identify actively transcribing Kaposi's sarcoma-associated herpesvirus (KSHV) episomes. By staining KSHV latency-associated nuclear antigen (LANA), it is possible to locate where viral episomes exist within the nucleus...
January 18, 2018: Journal of Visualized Experiments: JoVE
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