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Santacroce L, Magrone T. Molluscum Contagiosum Virus: Biology and Immune Response. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1451:151-170. [PMID: 38801577 DOI: 10.1007/978-3-031-57165-7_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Molluscum contagiosum virus is a poxvirus belonging to the Poxviridae family, which includes Orthopoxvirus, Parapoxvirus, Yantapoxvirus, Molluscipoxvirus, Smallpox virus, Cowpox virus and Monkeypox virus. MCV belongs to the genus Molluscipoxvirus and has a tropism for skin tissue. MCV infects keratinocytes and, after an incubation period of 2 weeks to 6 weeks, causes a breakdown of the skin barrier with the development of papules of variable size depending on the proper functioning of the immune response (both adaptive and acquired). MCV only infects humans and does not cause viraemia. MCV encodes for several inhibitory proteins responsible to circumvent the immune response through different signalling pathways. Individuals who can be infected with MCV are children, immunocompromised individuals such as organ transplant recipients and Human Immunodeficiency Virus (HIV)-infected individuals. Current treatments to manage MCV-induced lesions are different and include the use of immunomodulators, which, however, do not provide an effective response.
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Affiliation(s)
- Luigi Santacroce
- Section of Microbiology and Virology, Interdisciplinary Department of Medicine, School of Medicine, University of Bari, Bari, Italy.
| | - Thea Magrone
- Section of Microbiology and Virology, Interdisciplinary Department of Medicine, School of Medicine, University of Bari, Bari, Italy
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Achdiat PA, Andiani S, Hindritiani R, Gondokaryono SP, Nuzuliyah G, Usman HA, Maharani RH. Molluscum Contagiosum in HIV Patient Treated with 20% Topical Glycolic Acid After Resistance with Topical Tretinoin. Clin Cosmet Investig Dermatol 2023; 16:2749-2755. [PMID: 37794945 PMCID: PMC10546996 DOI: 10.2147/ccid.s423304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 09/21/2023] [Indexed: 10/06/2023]
Abstract
Molluscum contagiosum (MC) is a benign papular skin infection caused by Molluscum contagiosum virus (MCV). Over the past 30 years, the incidence of MK has continued to increased association with sexually transmitted infections and human immunodeficiency virus (HIV) infection. The incidence of MC in HIV patients is quite high at 5-8%. Until now there is no standard therapy used for the treatment of MC in patients with HIV. In HIV patients, anti retro viral therapy (ARV) is the main therapy with several other additional therapies such as cantaridin, chemical peeling agents such as glycolic acid (20-70%) and trichloroacetic acid (20-100%), cryosurgery, electrosurgery, incision, lactic acid, laser surgery, podophyllin, retinoic acid, and urea. There have been no studies regarding the administration of topical 20% glycolic acid in MC patients. We report a case of MC in an HIV patient who was treated with 20% topical glycolic acid after failing treatment with topical tretinoin. The diagnosis was made clinically, cytologically, and histopathologically, a white mass was found on compression of the lesion and Henderson-Paterson bodies. The lesions on the face, arms, and legs were given glycolic acid lotion 20% which was applied once a day at night. The lesions started to show responses to the treatment at week 6th as some of the MC papules became hyperpigmented macules. The side effects of therapy that appeared were itching and hyperpigmentation. Topical 20% glycolic acid can be used for MC therapy with minimal side effects, easy to apply and safe.
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Affiliation(s)
- Pati Aji Achdiat
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran - Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
| | - Syafira Andiani
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran - Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
| | - Reti Hindritiani
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran - Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
| | - Srie Prihianti Gondokaryono
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran - Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
| | - Gempita Nuzuliyah
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran - Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
| | - Hermin Aminah Usman
- Department of Anatomical Pathology, Faculty of Medicine, Universitas Padjadjaran – Dr. Hasan Sadikin General Hospital, Bandung, Indonesia
| | - Retno Hesty Maharani
- Department of Dermatology and Venereology, Faculty of Medicine, Universitas Padjadjaran - Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
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Cohn H, Bloom N, Cai G, Clark J, Tarke A, Bermúdez-González MC, Altman D, Lugo LA, Lobo FP, Marquez S, Chen JQ, Ren W, Qin L, Crotty S, Krammer F, Grifoni A, Sette A, Simon V, Coelho CH. Mpox vaccine and infection-driven human immune signatures. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.03.07.23286701. [PMID: 36945651 PMCID: PMC10029032 DOI: 10.1101/2023.03.07.23286701] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Background Mpox (formerly known as monkeypox) outbreaks outside endemic areas peaked in July 2022, infecting > 85,000 people and raising concerns about our preparedness against this emerging viral pathogen. Licensed and approved for mpox, the JYNNEOS vaccine has fewer side effects than previous smallpox vaccines and demonstrated efficacy against mpox infection in humans. Comparing JYNNEOS vaccine- and mpox-induced immunity is imperative to evaluate JYNNEOS' immunogenicity and inform vaccine administration and design. Methods We examined the polyclonal serum (ELISA) and single B cell (heavy chain gene and transcriptome data) antibody repertoires and T cells (AIM and ICS assays) induced by the JYNNEOS vaccine as well as mpox infection. Findings Gene-level plasmablast and antibody responses were negligible and JYNNEOS vaccinee sera displayed minimal binding to recombinant mpox proteins and native proteins from the 2022 outbreak strain. In contrast, recent mpox infection (within 20-102 days) induced robust serum antibody responses to A29L, A35R, A33R, B18R, and A30L, and to native mpox proteins, compared to vaccinees. JYNNEOS vaccine recipients presented comparable CD4 and CD8 T cell responses against orthopox peptides to those observed after mpox infection. Interpretation JYNNEOS immunization does not elicit a robust B cell response, and its immunogenicity may be mediated by T cells. Funding Research reported in this publication was supported, in part, by the National Cancer Institute of the National Institutes of Health under Award Number U54CA267776, U19AI168631(VS), as well as institutional funds from the Icahn School of Medicine.
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García-Gil MF, Morales-Moya AL, Monte-Serrano J, Ramírez-Lluch M, Iliev H, Ara-Martín M. Antimicrobial photodynamic therapy in the treatment of giant molluscum contagiosum: A case report and review of the literature. Dermatol Ther 2020; 34:e14635. [PMID: 33277812 DOI: 10.1111/dth.14635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/15/2020] [Accepted: 12/01/2020] [Indexed: 11/29/2022]
Affiliation(s)
| | - Ana Luisa Morales-Moya
- Department of Dermatology, Lozano Blesa University Clinical Hospital of Zaragoza, Zaragoza, Spain
| | - Juan Monte-Serrano
- Department of Dermatology, Lozano Blesa University Clinical Hospital of Zaragoza, Zaragoza, Spain
| | - Mar Ramírez-Lluch
- Department of Dermatology, Lozano Blesa University Clinical Hospital of Zaragoza, Zaragoza, Spain
| | - Hristo Iliev
- Department of Pathology, Lozano Blesa University Clinical Hospital of Zaragoza, Zaragoza, Spain
| | - Mariano Ara-Martín
- Department of Dermatology, Lozano Blesa University Clinical Hospital of Zaragoza, Zaragoza, Spain
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Zare SY. Infectious disorders of the vulva. Semin Diagn Pathol 2020; 38:19-26. [PMID: 33067080 DOI: 10.1053/j.semdp.2020.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 11/11/2022]
Abstract
The vulva can be affected by a variety of sexually transmitted infections as well as other common infections that are not typically related to sexual transmission. Vulvar infections may adversely affect the quality of life of the patients by causing discomfort and pain. Some of these infections, especially the ulcerative ones, may also increase the risk of transmission of other infectious diseases, including HIV. Due to the recently increasing number of sexually transmitted infections and atypical presentations of these infections in immunocompromised patients, it is important for pathologists to be familiar with histopathologic features of the infectious diseases of the vulva, so that accurate diagnoses can be rendered as promptly as possible. This review discusses the clinicopathologic presentations of the non-HPV related infections of the vulva.
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Affiliation(s)
- Somaye Y Zare
- Department of Pathology, University of California San Diego, La Jolla, CA, USA.
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Edwards S, Boffa MJ, Janier M, Calzavara-Pinton P, Rovati C, Salavastru CM, Rongioletti F, Wollenberg A, Butacu AI, Skerlev M, Tiplica GS. 2020 European guideline on the management of genital molluscum contagiosum. J Eur Acad Dermatol Venereol 2020; 35:17-26. [PMID: 32881110 DOI: 10.1111/jdv.16856] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/17/2020] [Accepted: 07/30/2020] [Indexed: 01/05/2023]
Abstract
Molluscum contagiosum is a benign viral epidermal infection associated with high risk of transmission. The guideline is focused on the sexually transmitted molluscum contagiosum. The diagnosis is clinical with characteristic individual lesions, termed 'mollusca', seen as dome-shaped, smooth-surfaced, pearly, firm, skin-coloured, pink, yellow or white papules, 2 - 5 mm in diameter with central umbilication. Dermoscopy may facilitate diagnosis. Therapeutic options are numerous, including physical treatments (cautery, curettage and cryotherapy), topical chemical treatments (e.g. podophyllotoxin and imiquimod) or waiting for spontaneous resolution in immunocompetent patients. In pregnancy, it is safe to use physical procedures (e.g. cryotherapy). Immunosuppressed patients develop severe and recalcitrant molluscum lesions that may require treatment with cidofovir, imiquimod or interferon. Patients with molluscum contagiosum infection should be offered to be screened for other sexually transmitted infections.
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Affiliation(s)
| | - M J Boffa
- Department of Dermatology, Sir Paul Boffa Hospital, Floriana, Malta
| | - M Janier
- STD Clinic, Hôpital Saint-Louis AP-HP and Hôpital Saint-Joseph, Paris, France
| | | | - C Rovati
- Dermatology Department, University of Brescia, Italy
| | - C M Salavastru
- Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
| | - F Rongioletti
- Unit of Dermatology, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - A Wollenberg
- Dept. of Dermatology and Allergology, Ludwig-Maximilian University, Munich, Germany
| | - A I Butacu
- Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
| | - M Skerlev
- Zagreb University Hospital and Zagreb University School Of Medicine, Zagreb, Croatia
| | - G S Tiplica
- Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
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Le Tortorec A, Matusali G, Mahé D, Aubry F, Mazaud-Guittot S, Houzet L, Dejucq-Rainsford N. From Ancient to Emerging Infections: The Odyssey of Viruses in the Male Genital Tract. Physiol Rev 2020; 100:1349-1414. [PMID: 32031468 DOI: 10.1152/physrev.00021.2019] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The male genital tract (MGT) is the target of a number of viral infections that can have deleterious consequences at the individual, offspring, and population levels. These consequences include infertility, cancers of male organs, transmission to the embryo/fetal development abnormalities, and sexual dissemination of major viral pathogens such as human immunodeficiency virus (HIV) and hepatitis B virus. Lately, two emerging viruses, Zika and Ebola, have additionally revealed that the human MGT can constitute a reservoir for viruses cleared from peripheral circulation by the immune system, leading to their sexual transmission by cured men. This represents a concern for future epidemics and further underlines the need for a better understanding of the interplay between viruses and the MGT. We review here how viruses, from ancient viruses that integrated the germline during evolution through old viruses (e.g., papillomaviruses originating from Neanderthals) and more modern sexually transmitted infections (e.g., simian zoonotic HIV) to emerging viruses (e.g., Ebola and Zika) take advantage of genital tract colonization for horizontal dissemination, viral persistence, vertical transmission, and endogenization. The MGT immune responses to viruses and the impact of these infections are discussed. We summarize the latest data regarding the sources of viruses in semen and the complex role of this body fluid in sexual transmission. Finally, we introduce key animal findings that are relevant for our understanding of viral infection and persistence in the human MGT and suggest future research directions.
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Affiliation(s)
- Anna Le Tortorec
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Giulia Matusali
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Dominique Mahé
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Florence Aubry
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Séverine Mazaud-Guittot
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Laurent Houzet
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Nathalie Dejucq-Rainsford
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
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8
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Molluscum Contagiosum Virus Protein MC005 Inhibits NF-κB Activation by Targeting NEMO-Regulated IκB Kinase Activation. J Virol 2017; 91:JVI.00545-17. [PMID: 28490597 DOI: 10.1128/jvi.00545-17] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/05/2017] [Indexed: 12/20/2022] Open
Abstract
Molluscum contagiosum virus (MCV), the only known extant human-adapted poxvirus, causes a long-duration infection characterized by skin lesions that typically display an absence of inflammation despite containing high titers of live virus. Despite this curious presentation, MCV is very poorly characterized in terms of host-pathogen interactions. The absence of inflammation around MCV lesions suggests the presence of potent inhibitors of human antiviral immunity and inflammation. However, only a small number of MCV immunomodulatory genes have been characterized in detail. It is likely that many more remain to be discovered, given the density of such sequences in other poxvirus genomes. NF-κB activation occurs in response to both virus-induced pattern recognition receptor (PRR) signaling and cellular activation by virus-induced proinflammatory cytokines like tumor necrosis factor and interleukin-1. Activated NF-κB drives cytokine and interferon gene expression, leading to inflammation and virus clearance. We report that MC005, which has no orthologs in other poxvirus genomes, is a novel inhibitor of PRR- and cytokine-stimulated NF-κB activation. MC005 inhibited NF-κB proximal to the IκB kinase (IKK) complex, and unbiased affinity purification revealed that MC005 interacts with the IKK subunit NEMO (NF-κB essential modulator). MC005 binding to NEMO prevents the conformational priming of the IKK complex that occurs when NEMO binds to ubiquitin chains during pathway activation. These data reveal a novel mechanism of poxvirus inhibition of human innate immunity, validate current dynamic models of NEMO-dependent IKK complex activation, and further clarify how the human-adapted poxvirus MCV can so effectively evade antiviral immunity and suppress inflammation to persist in human skin lesions.IMPORTANCE Poxviruses adapt to specific hosts over time, evolving and tailoring elegantly precise inhibitors of the rate-limiting steps within the signaling pathways that control innate immunity and inflammation. These inhibitors reveal new features of the antiviral response, clarify existing models of signaling regulation while offering potent new tools for approaching therapeutic intervention in autoimmunity and inflammatory disease. Molluscum contagiosum virus (MCV) is the only known extant poxvirus specifically adapted to human infection and appears adept at evading normal human antiviral responses, yet it remains poorly characterized. We report the identification of MCV protein MC005 as an inhibitor of the pathways leading to the activation of NF-κB, an essential regulator of innate immunity. Further, identification of the mechanism of inhibition of NF-κB by MC005 confirms current models of the complex way in which NF-κB is regulated and greatly expands our understanding of how MCV so effectively evades human immunity.
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9
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Martin P. Interventions for molluscum contagiosum in people infected with human immunodeficiency virus: a systematic review. Int J Dermatol 2016; 55:956-66. [PMID: 26991246 DOI: 10.1111/ijd.13267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 11/02/2015] [Accepted: 11/18/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Molluscum contagiosum (MC) is a viral skin disease that presents with white, painless papules with central umbilication. In immunocompent individuals, MC is usually a benign infection that resolves without intervention. In HIV positive people, symptoms of MC can be more severe. OBJECTIVE The aim of this systematic review is to analyze the literature on strategies for treating MC in people concomitantly infected with HIV and subsequently make recommendations on best management strategies for these people. METHOD Searches were conducted of the following electronic databases: MEDLINE, EMBASE, Cochrane Library, PubMed, LILACS, IndMED, Global Health, ClinicalTrials.Gov, and Current Controlled Trials. Grey literature was searched via the New York Academy of Medicine Grey Literature Report and Open Grey. References cited in previous reviews and references cited in studies identified as being possibly relevant were also reviewed. No language restrictions were imposed. Papers from 1980 to present were reviewed. RESULTS & DISCUSSION Thirteen studies were included in this review. Two papers were comparative studies, one of which was randomized and neither of which were blinded. Ten papers were observational studies with heterogeneous populations. One study was a multicentre cohort study. CONCLUSION Given the poor quality of study design, wide array of outcome variables, and lack of objective evidence, no specific recommendation can be made for the treatment of MC in people infected with HIV, other than the initiation of ART. Despite the good impact ART has made on prevalence of dermatologic disease, MC remains an important cause of morbidity in HIV positive populations.
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Affiliation(s)
- Paul Martin
- London School of Hygiene and Tropical Medicine, London, UK
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10
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Chatterjee S, Banerjee M, Bhattacharya S. Giant molluscum contagiosum: an unusual presenting complaint of paediatric HIV disease. Trop Doct 2015; 45:148-50. [PMID: 25601890 DOI: 10.1177/0049475514568133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We report a widely disseminated, disfiguring facial molluscum contagiosum (MC) as a presenting complaint in an 11-year-old girl secondary to human immune-deficiency virus infection. A biopsy specimen demonstrated lobulated epidermal growth consisting of keratinocytes with large intracytoplasmic eosinophilic inclusion bodies. The patient was treated with highly active anti-retroviral therapy (HAART). The extent of MC in our patient was remarkable and subsequently improved dramatically after starting HAART. Normally MC does not similarly respond in patients with AIDS.
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Affiliation(s)
- Sayan Chatterjee
- Resident, Department of Paediatrics, Medical College, Kolkata, India
| | - Mukut Banerjee
- Resident, Department of Paediatrics, Medical College, Kolkata, India
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Basu S, Kumar A. Giant molluscum contagiosum - a clue to the diagnosis of human immunodeficiency virus infection. J Epidemiol Glob Health 2013; 3:289-91. [PMID: 24206800 PMCID: PMC7320409 DOI: 10.1016/j.jegh.2013.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 06/03/2013] [Accepted: 06/05/2013] [Indexed: 11/29/2022] Open
Abstract
Molluscum contagiosum (MC) is a benign cutaneous viral infection, affecting mainly children and young adults. Though the disease is self-limiting in immunocompetent individuals, a severe and prolonged course is associated with Human Immunodeficiency Virus (HIV) infection. The following reports an apparently healthy 2-year-old boy with extensive MC without any systemic illness. His parents died of tuberculosis. Investigations revealed him to be a case of HIV infection with severe immunosuppression. The fact that awareness of this condition as being the first sign of HIV infection should prompt diagnostic investigation, especially in India where access to healthcare facilities is limited.
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Affiliation(s)
- Sriparna Basu
- Department of Pediatrics, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India.
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12
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Drain PK, Mosam A, Gounder L, Gosnell B, Manzini T, Moosa MYS. Recurrent giant molluscum contagiosum immune reconstitution inflammatory syndrome (IRIS) after initiation of antiretroviral therapy in an HIV-infected man. Int J STD AIDS 2013; 25:235-8. [PMID: 23970647 DOI: 10.1177/0956462413497702] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We describe an HIV-infected South African man who experienced two distinct episodes of disseminated giant molluscum contagiosum immune reconstitution inflammatory syndrome (IRIS) over a six-year period. The first episode of molluscum contagiosum IRIS occurred with rapid virologic suppression following antiretroviral therapy initiation. The second episode occurred during a rapid increase in CD4 cells following stable viral suppression with second-line antiretroviral therapy. His molluscum contagiosum lesions then completely resolved during a reduction in CD4 count, despite maintaining virologic suppression. Nearly one year after the resolution of his giant molluscum contagiosum IRIS lesions, he maintains an undetectable viral load, but his level of immune deficiency has not improved. In the absence of well-controlled therapeutic trials, molluscum contagiosum IRIS presents important management challenges.
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Affiliation(s)
- Paul K Drain
- Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA
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13
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Chen X, Anstey AV, Bugert JJ. Molluscum contagiosum virus infection. THE LANCET. INFECTIOUS DISEASES 2013; 13:877-88. [PMID: 23972567 DOI: 10.1016/s1473-3099(13)70109-9] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Molluscum contagiosum virus is an important human skin pathogen: it can cause disfigurement and suffering in children, in adults it is less common and often sexually transmitted. Extensive and persistent skin infection with the virus can indicate underlying immunodeficiency. Traditional ablative therapies have not been compared directly with newer immune-modulating and specific antiviral therapies. Advances in research raise the prospect of new approaches to treatment informed by the biology of the virus; in human skin, the infection is localised in the epidermal layers, where it induces a typical, complex hyperproliferative lesion with an abundance of virus particles but a conspicuous absence of immune effectors. Functional studies of the viral genome have revealed effects on cellular pathways involved in the cell cycle, innate immunity, inflammation, and cell death. Extensive lesions caused by molluscum contagiosum can occur in patients with DOCK8 deficiency-a genetic disorder affecting migration of dendritic and specialised T cells in skin. Sudden disappearance of lesions is the consequence of a vigorous immune response in healthy people. Further study of the unique features of infection with molluscum contagiosum virus could give fundamental insight into the nature of skin immunity.
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Affiliation(s)
- Xiaoying Chen
- Department of Dermatology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Jafferany M, Huynh TV, Silverman MA, Zaidi Z. Geriatric dermatoses: a clinical review of skin diseases in an aging population. Int J Dermatol 2012; 51:509-22. [PMID: 22515576 DOI: 10.1111/j.1365-4632.2011.05311.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Geriatric dermatoses are a challenging job for the physician in terms of diagnosis, management, and followup. Since skin of the elderly population is going through a lot of changes from both an intrinsic and extrinsic point of view, it is imperative for the physician to have a better understanding of the pathophysiology of geriatric skin disorders and their specific management, which differs slightly from an adult population. This review focuses on a brief introduction to the pathophysiological aspects of skin disorders in elderly, the description of some common geriatric skin disorders and their management and the new emerging role of psychodermatological aspects of geriatric dermatoses is also discussed. At the end, ten multiple choice questions are also added to further enhance the knowledge base of the readers.
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Affiliation(s)
- Mohammad Jafferany
- Psychodermatology Clinic, Department of Psychiatry and Behavioral Sciences, Synergy Medical Education Alliance, MI 48603, USA.
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15
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Doni SN, Mitchell AL, Bogale Y, Walker SL. Skin disorders affecting human immunodeficiency virus-infected children living in an orphanage in Ethiopia. Clin Exp Dermatol 2011; 37:15-9. [DOI: 10.1111/j.1365-2230.2011.04202.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Jin Q, Altenburg JD, Hossain MM, Alkhatib G. Role for the conserved N-terminal cysteines in the anti-chemokine activities by the chemokine-like protein MC148R1 encoded by Molluscum contagiosum virus. Virology 2011; 417:449-56. [PMID: 21802105 DOI: 10.1016/j.virol.2011.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 04/21/2011] [Accepted: 07/05/2011] [Indexed: 11/29/2022]
Abstract
Molluscum contagiosum poxvirus (MCV) type 1 and type 2 encode two chemokine-like proteins MC148R1 and MC148R2. It is believed that MC148R proteins function by blocking the inflammatory response. However, the mechanism of the proposed biological activities of MC148R proteins and the role of the additional C-terminal cysteines that do not exist in other chemokines are not understood. Here, we demonstrated in two different assay systems that His-tagged MC148R1 displaces the interaction between CXCL12α and CXCR4. The N-terminal cysteines but not the additional C-terminal cysteines modulate this displacement. His-tagged MC148R1 blocked both CXCL12α-mediated and MIP-1α-mediated chemotaxis. In contrast, MC148R2 blocked MIP-1α-mediated but not CXCL12α-mediated chemotaxis. Immunoprecipitation by antibodies to MC148R1 or CXCL12α followed by immunoblotting and detection by antibodies to the other protein demonstrated physical interaction of His-tagged CXCL12α and His-tagged MC148R1. Interaction with chemokines might mask the receptor interaction site resulting in decreased binding and impairment of the biological activities.
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Affiliation(s)
- Qingwen Jin
- Department of Biomedical Sciences, Center of Excellence for Infectious Diseases, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX 79905, USA
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Molina L, Romiti R. Molusco contagioso em tatuagem. An Bras Dermatol 2011; 86:352-4. [DOI: 10.1590/s0365-05962011000200022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Accepted: 05/05/2010] [Indexed: 11/22/2022] Open
Abstract
Molusco contagioso é uma dermatovirose causada por poxvírus e caracterizada por erupção benigna e autolimitada de uma ou múltiplas pápulas esféricas e brilhantes. A transmissão habitualmente ocorre por contato direto com indivíduos infectados. Relata-se caso de doente masculino, 22 anos, com história de surgimento de numerosas pápulas umbilicadas localizadas estritamente sobre a região de uma tatuagem. Exame histopatológico de uma das pápulas confirmou a hipótese clínica de molusco contagioso. Os autores descrevem uma manifestação pouco frequente da disseminação desse vírus em tatuagens e apresentam uma revisão da literatura, enfatizando as vias de transmissão e a terapêutica do molusco contagioso.
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Hood CT, Jeng BH, Lowder CY, Holland GN, Meisler DM. Corneal and External Ocular Infections in Acquired Immunodeficiency Syndrome (AIDS). Cornea 2011. [DOI: 10.1016/b978-0-323-06387-6.00074-x] [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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McNulty S, Bornmann W, Schriewer J, Werner C, Smith SK, Olson VA, Damon IK, Buller RM, Heuser J, Kalman D. Multiple phosphatidylinositol 3-kinases regulate vaccinia virus morphogenesis. PLoS One 2010; 5:e10884. [PMID: 20526370 PMCID: PMC2878334 DOI: 10.1371/journal.pone.0010884] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 05/07/2010] [Indexed: 12/22/2022] Open
Abstract
Poxvirus morphogenesis is a complex process that involves the successive wrapping of the virus in host cell membranes. We screened by plaque assay a focused library of kinase inhibitors for those that caused a reduction in viral growth and identified several compounds that selectively inhibit phosphatidylinositol 3-kinase (PI3K). Previous studies demonstrated that PI3Ks mediate poxviral entry. Using growth curves and electron microscopy in conjunction with inhibitors, we show that that PI3Ks additionally regulate morphogenesis at two distinct steps: immature to mature virion (IMV) transition, and IMV envelopment to form intracellular enveloped virions (IEV). Cells derived from animals lacking the p85 regulatory subunit of Type I PI3Ks (p85α−/−β−/−) presented phenotypes similar to those observed with PI3K inhibitors. In addition, VV appear to redundantly use PI3Ks, as PI3K inhibitors further reduce plaque size and number in p85α−/−β−/− cells. Together, these data provide evidence for a novel regulatory mechanism for virion morphogenesis involving phosphatidylinositol dynamics and may represent a new therapeutic target to contain poxviruses.
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Affiliation(s)
- Shannon McNulty
- Microbiology and Molecular Genetics Graduate Program, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - William Bornmann
- MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
| | - Jill Schriewer
- Department of Molecular Microbiology and Immunology, Saint Louis University Health Sciences Center, St. Louis, Missouri, United States of America
| | - Chas Werner
- Department of Molecular Microbiology and Immunology, Saint Louis University Health Sciences Center, St. Louis, Missouri, United States of America
| | - Scott K. Smith
- Poxvirus Team, Poxvirus and Rabies Branch, Division of Viral and Rickettsial Diseases, National Center for Zoonotic, Viral and Enteric Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Victoria A. Olson
- Poxvirus Team, Poxvirus and Rabies Branch, Division of Viral and Rickettsial Diseases, National Center for Zoonotic, Viral and Enteric Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Inger K. Damon
- Poxvirus Team, Poxvirus and Rabies Branch, Division of Viral and Rickettsial Diseases, National Center for Zoonotic, Viral and Enteric Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - R. Mark Buller
- Department of Molecular Microbiology and Immunology, Saint Louis University Health Sciences Center, St. Louis, Missouri, United States of America
| | - John Heuser
- Department of Cell Biology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Daniel Kalman
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- * E-mail:
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Ramdial PK. Dermatopathological challenges in the human immunodeficiency virus and acquired immunodeficiency syndrome era. Histopathology 2010; 56:39-56. [PMID: 20055904 DOI: 10.1111/j.1365-2559.2009.03456.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The histopathological assessment of cutaneous lesions is critical to the definitive diagnosis of many human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome-associated dermatoses, infections and tumours. Dermatopathological challenges stem mainly from the altered histopathological profile of established cutaneous entities compared with that in the HIV-unaffected population, the emergence of new diseases and the impact of therapeutic modalities on cutaneous lesions. This review focuses on some of these diagnostic dilemmas, with emphasis on the following challenges: (i) infective diagnostic pitfalls; (ii) itchy papular skin lesions; (iii) co-lesional comorbid diseases; (iv) drug-induced disease alterations; and (v) neoplastic and pseudoneoplastic proliferations. The drug-induced alterations include highly active antiretroviral therapy-associated disease modifications.
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Affiliation(s)
- Pratistadevi K Ramdial
- Department of Anatomical Pathology, National Health Laboratory Service & Nelson R Mandela School of Medicine, Inkosi Albert Luthuli Central Hospital, University of KwaZulu Natal, Durban, KwaZulu Natal, South Africa.
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Abstract
Tumor necrosis factor (TNF) blockers are widely used to treat rheumatoid arthritis and other chronic inflammatory diseases. Many studies have demonstrated an increased risk of opportunistic infections such as tuberculosis and fungal infection in patients treated with TNF blockers, which is thought to be related to the primary role of TNF both in host defense and in the immune response. Little is known, however, about the association between TNF blockade and the development of viral infection. Owing to the critical role of TNF in the control of viral infection, depletion of this cytokine with TNF blockers could facilitate the development or reactivation of viral infection. A number of large observational studies have found an increased risk of herpes zoster in patients receiving TNF blockers for the treatment of rheumatoid arthritis. This Review draws attention to the risk of several viral infections, including HIV, varicella zoster virus, Epstein-Barr virus, cytomegalovirus, and human papillomavirus, in patients receiving TNF-blocking therapy for chronic inflammatory conditions. In addition, implications for clinical practice and possible preventative approaches are discussed.
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