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https://www.readbyqxmd.com/read/27936237/the-immunomodulatory-small-molecule-imiquimod-induces-apoptosis-in-devil-facial-tumour-cell-lines
#1
Amanda L Patchett, Jocelyn M Darby, Cesar Tovar, A Bruce Lyons, Gregory M Woods
The survival of the Tasmanian devil (Sarcophilus harrisii) is threatened by devil facial tumour disease (DFTD). This transmissible cancer is usually fatal, and no successful treatments have been developed. In human studies, the small immunomodulatory molecule imiquimod is a successful immunotherapy, activating anti-tumour immunity via stimulation of toll-like receptor-7 (TLR7) signaling pathways. In addition, imiquimod is a potent inducer of apoptosis in human tumour cell lines via TLR7 independent mechanisms...
2016: PloS One
https://www.readbyqxmd.com/read/27934944/overexpression-of-glucocorticoid-induced-leucine-zipper-gilz-increases-susceptibility-to-imiquimod-induced-psoriasis-and-involves-cutaneous-activation-of-tgf-%C3%AE-1
#2
Elena Carceller, Marlies Ballegeer, Julie Deckers, Carlo Riccardi, Stefano Bruscoli, Tino Hochepied, Claude Libert, Paloma Pérez
Psoriasis vulgaris is a chronic inflammatory skin disease affecting millions of people. Its pathophysiology is complex and involves a skin compartment with epidermal and immune cells which produce cytokines, e.g. belonging to the IL-23-Th17-cell axis. Glucocorticoids (GCs) are the most common therapeutics used in cutaneous inflammatory disorders and GC-induced leucine zipper (GILZ) has emerged as a mediator of GCs due to its anti-inflammatory actions, theoretically lacking GC side-effects. We evaluated whether GILZ may provide a better therapeutic index in comparison to GCs during the onset and progression of psoriasis by generating and characterizing a mouse model with generalized overexpression of this protein (GILZ-Tg mice) and the imiquimod (IMQ) psoriasis model...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27933205/dermatomyositis-flare-on-imiquimod-therapy-highlights-a-crucial-role-of-aberrant-tlr7-signalling
#3
Alain Meyer, Ghada Alsaleh, Claude Heuschling, Jacques-Eric Gottenberg, Philippe Georgel, Benard Geny, Seiamak Bahram, Jean Sibilia
No abstract text is available yet for this article.
2016: RMD Open
https://www.readbyqxmd.com/read/27932240/surgery-versus-5-imiquimod-for-nodular%C3%A2-and-superficial-basal-cell-carcinoma-5-year-results-of-the-sins%C3%A2-randomized-controlled-trial
#4
Hywel C Williams, Fiona Bath-Hextall, Mara Ozolins, Sarah J Armstrong, Graham B Colver, William Perkins, Paul S J Miller
We previously reported modest clinical 3-year benefit for topical imiquimod compared with surgery for superficial or nodular basal cell carcinoma at low-risk sites in our noninferiority randomized controlled SINS trial. Here we report 5-year data. Participants were randomized to imiquimod 5% cream once daily (superficial basal cell carcinoma, 6 weeks; nodular basal cell carcinoma, 12 weeks) or excisional surgery (4-mm margin). The primary outcome was clinical absence of initial failure or signs of recurrence at the 3-year dermatology review...
November 23, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27927165/innate-immunity-based-cancer-immunotherapy-b16-f10-murine-melanoma-model
#5
Veronika Caisová, Andra Vieru, Zuzana Kumžáková, Simona Glaserová, Hana Husníková, Nikol Vácová, Gabriela Krejčová, Lucie Paďouková, Ivana Jochmanová, Katherine I Wolf, Jindřich Chmelař, Jan Kopecký, Jan Ženka
BACKGROUND: Using killed microorganisms or their parts to stimulate immunity for cancer treatment dates back to the end of 19(th) century. Since then, it undergone considerable development. Our novel approach binds ligands to the tumor cell surface, which stimulates tumor phagocytosis. The therapeutic effect is further amplified by simultaneous application of agonists of Toll-like receptors. We searched for ligands that induce both a strong therapeutic effect and are safe for humans. METHODS: B16-F10 murine melanoma model was used...
December 7, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27920272/mcpip1-regnase-1-restricts-il-17a-and-il-17c-dependent-skin-inflammation
#6
Leticia Monin, Johann E Gudjonsson, Erin E Childs, Nilesh Amatya, Xianying Xing, Akash H Verma, Bianca M Coleman, Abhishek V Garg, Meaghan Killeen, Alicia Mathers, Nicole L Ward, Sarah L Gaffen
The IL-17 family cytokines IL-17A and IL-17C drive the pathogenesis of psoriatic skin inflammation, and anti-IL-17A Abs were recently approved to treat human psoriasis. Little is known about mechanisms that restrain IL-17 cytokine-mediated signaling, particularly IL-17C. In this article, we show that the endoribonuclease MCP-1-induced protein 1 (MCPIP1; also known as regnase-1) is markedly upregulated in human psoriatic skin lesions. Similarly, MCPIP1 was overexpressed in the imiquimod (IMQ)-driven mouse model of cutaneous inflammation...
December 5, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27912903/genital-vitiligo-like-hypopigmentation-after-treatment-with-5-imiquimod
#7
P García-Montero, J B Repiso Jiménez, M T Fernández Morano, M de Troya Martín
No abstract text is available yet for this article.
November 29, 2016: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/27910163/serum-amyloid-a-an-acute-phase-protein-stimulates-proliferative-and-proinflammatory-responses-of-keratinocytes
#8
Ning Yu, Shujie Zhang, Jiajing Lu, Ying Li, Xuemei Yi, Li Tang, Lina Su, Yangfeng Ding
OBJECTIVES: Serum amyloid A (SAA), an acute phase protein, is highly expressed in psoriatic lesions but its function is not fully understood. The aim of this study was to explore its role in activation of keratinocytes. MATERIALS AND METHODS: Real-time PCR and immunofluorescence were performed to examine SAA expression in imiquimod (IMQ)-induced psoriasis-like mice. In vivo function of SAA was examined by treating psoriasis-like mice with SAA neutralising antibody...
December 2, 2016: Cell Proliferation
https://www.readbyqxmd.com/read/27890959/anti-retroviral-therapy-s-miracle-in-the-treatment-of-bowen-s-disease-in-a-human-immunodeficiency-virus-positive-patient-a-rare-case-report
#9
Kannan Gopalan, Seethalakshmi Ganga Vellaisamy, Navakumar Manickam, Razil Ahamed
Bowen's disease (BD) is a form of squamous cell carcinoma in situ often associated with human papillomavirus. Co-infection with human immunodeficiency virus (HIV) is associated with a greater risk of malignancy. We describe a case of BD in a 52-year-old unmarried HIV-positive male who presented with extensive skin lesions of 1-year duration. Histopathology was suggestive of BD. He had been tried with topical imiquimod cream and cryo-therapy for 6 months. We observed no response for these above therapies. He was started on with anti-retroviral therapy (ART) as his CD4 count was 253 cells/mm(3)...
July 2016: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27882780/solid-lipid-nanoparticles-and-nanostructured-lipid-carrier-based-nanotherapeutics-in-treatment-of-psoriasis-a-comparative-study
#10
Rhythm Arora, Sameer S Katiyar, Varun Kushwah, Sanyog Jain
BACKGROUND: The present work focuses on the development of ultra-small solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) encapsulating cyclosporine and calcipotriol, further incorporated into gel, increasing their penetration through the skin. RESEARCH DESIGN AND METHODS: Developed SLN and NLC were characterized regarding particle size, zeta potential, %entrapment efficiency and dispersed into carbopol 934P-NF gel. Gel was further characterized for rheological behavior and spreadability...
November 24, 2016: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/27876407/complement-c3-exacerbates-imiquimod-induced-skin-inflammation-and-psoriasiform-dermatitis
#11
Chiara Giacomassi, Norzawani Buang, Guang Sheng Ling, Greg Crawford, H Terence Cook, Diane Scott, Francesco Dazzi, Jessica Strid, Marina Botto
No abstract text is available yet for this article.
November 19, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27871359/focal-epithelial-hyperplasia-in-adult-patients-with-hiv-infection-clearance-with-topical-imiquimod
#12
Silvia Méndez-Flores, Lilly Esquivel-Pedraza, Amparo Hernández-Salazar, Yann Charli-Joseph, Marcela Saeb-Lima
Case 1 A 41-year-old man with human immunodeficiency virus (HIV) 1 diagnosed 16 years prior to his consultation was referred for an 8-month history of multiple painless lumps in his mouth. He had A2 status (CD4 cell count of 273 cells/mm(3) and viral load of 43,000 copies/L) and was taking treatment with lamivudine/zidovudine (combivir) and efavirenz. Physical examination showed multiple small mucosal-colored and lobulated papulonodules located in the palate and lower gingiva and a whitish verrucous plaque on the lower labial mucosa (Figure 1a)...
2016: Skinmed
https://www.readbyqxmd.com/read/27865791/efficacy-of-2-representative-topical-agents-to-prevent-keloid-recurrence-after-surgical-excision
#13
REVIEW
Jin Yong Shin, Seok-Kweon Yun, Si-Gyun Roh, Nae-Ho Lee, Kyung-Moo Yang
PURPOSE: Keloids are difficult to remove successfully and there is no universally accepted treatment. After surgical excision of the keloid, there are various management methods for prevention of keloid recurrence, such as intralesional injection, radiation, and topical agents. A few studies have compared topical agents with other treatments. The aim of this study was to investigate effective topical agents for the prevention of recurrent keloid after surgical excision. MATERIALS AND METHODS: Eligible articles were sought using core databases, including Medline, Embase, and Cochrane databases, up to April 2016...
October 25, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27864310/low-tlr7-gene-expression-in-atherosclerotic-plaques-is-associated-with-major-adverse-cardio-and-cerebrovascular-events
#14
Glykeria Karadimou, Lasse Folkersen, Martin Berg, Ljubica Perisic, Andrea Discacciati, Joy Roy, Göran K Hansson, Jonas Persson, Gabrielle Paulsson-Berne
AIMS: Processes in the development of atherosclerotic lesions can lead to plaque rupture or erosion, which can in turn elicit myocardial infarction or ischaemic stroke. The aims of this study were to determine whether Toll-like receptor 7 (TLR7) gene expression levels influence patient outcome and to explore the mechanisms linked to TLR7 expression in atherosclerosis. METHODS AND RESULTS: Atherosclerotic plaques were removed by carotid endarterectomy (CEA) and subjected to gene array expression analysis (n=123)...
November 15, 2016: Cardiovascular Research
https://www.readbyqxmd.com/read/27859256/proinflammatory-effect-of-hmgb1-on-keratinocytes-an-autocrine-mechanism-underlying-psoriasis-development
#15
Weigang Zhang, Sen Guo, Bing Li, Lin Liu, Rui Ge, Tianyu Cao, Huina Wang, Tianwen Gao, Gang Wang, Chunying Li
Psoriasis is an autoimmune skin disease, in which keratinocytes play a crucial pathogenic role. High-mobility group protein B1 (HMGB1) is an inflammatory factor that can be released from keratinocyte nuclei in psoriatic lesions. We aimed to investigate the proinflammatory effect of HMGB1 on keratinocytes and the contribution of HMGB1 to psoriasis development. Normal human keratinocytes were treated with recombinant human HMGB1, and the production of inflammatory factors and the intermediary signaling pathways were examined...
November 14, 2016: Journal of Pathology
https://www.readbyqxmd.com/read/27829595/imiquimod-induced-ccr9-ameliorates-murine-tnbs-colitis
#16
Ryoma Suzuki, Kyoko Katakura, Tatsuo Fujiwara, Naohiko Gunji, Hiroshi Watanabe, Hiromasa Ohira
To investigate whether Imiquimod (IMQ) as TLR7 ligand protects mice from colonic inflammation and the mechanisms underlying in such immunoregulatory conditions. METHODS: Murine colitis was induced to Balb/c mice by administration of trinitrobenzene sulfonic acid (TNBS) with or without daily intraperitoneal administration of IMQ. Colitis was evaluated by body weight decreases and by histological score. Also colonic mRNA expression was measured by RT-PCR. To confirm the induction of Regulatory T cells (Tregs) by type-1 IFN from pDCs, we generated mouse bone marrow-derived pDCs and co-cultured these with CD4(+) T cells isolated from mouse spleen with or without IMQ stimulation...
November 10, 2016: Fukushima Journal of Medical Science
https://www.readbyqxmd.com/read/27809682/human-immunodeficiency-virus-1-impairs-ifn-alpha-production-induced-by-tlr-7-agonist-in-plasmacytoid-dendritic-cells
#17
Ashwini Dhamanage, Madhuri Thakar, Ramesh Paranjape
Plasmacytoid dendritic cells (pDCs) play an important role in innate immune response against viruses, mainly through interferon-α (IFN-α) secretion. Impaired IFN-α secretion has been observed in patients with acute human immunodeficiency virus type 1 (HIV-1) infection and the reasons for this impairment are still obscure. To know the grounds behind this situation, HIV-1 viral copy numbers similar to those found in primary HIV-1 infection were used to stimulate peripheral blood mononuclear cells (PBMCs) and pDCs in this study...
November 3, 2016: Viral Immunology
https://www.readbyqxmd.com/read/27803240/self-administered-interventions-for-anogenital-warts-in-immunocompetent-patients-a-systematic-review-and-meta-analysis
#18
Ricardo Niklas Werner, Lukas Westfechtel, Corinna Dressler, Alexander Nast
BACKGROUND: Anogenital warts (AGWs, condylomata acuminata) are among the most common STIs and may severely impact quality of life (QoL). Available treatment options are characterised by a high proportion of non-responders and recurrences. OBJECTIVE: To systematically review and meta-analyse the available evidence from randomised controlled trials (RCTs) on topical treatments for AGWs considering short-term and long-term efficacy, effects on QoL and adverse events (AE)...
November 1, 2016: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/27789051/-multiple-epidermolytic-acanthomas-of-the-genitalia
#19
I Moulonguet, M Serre, D Herskovitch
BACKGROUND: Epidermolytic hyperkeratosis presents a particular histological image common to several clinical pictures, including that of keratinopathic ichthyoses. It may also occur fortuitously in various tumoral and inflammatory lesions. It is the elementary histopathological lesion of epidermolytic acanthoma, which may either be single or multiple, and when it occurs in the genital area, is known as epidermolytic hyperkeratosis of the genitalia or multiple epidermolytic acanthoma of the genitalia...
October 24, 2016: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/27784527/recalcitrant-verrucae-in-patients-with-dock8-deficiency
#20
Yen Tun Wang, Bob Geng, Samantha Gendelman, Alexandra Freeman, Christina Nam-Soo Kim
An 18-year-old Caucasian man presented with extensive recalcitrant verrucae on his trunk and extremities that were unresponsive to cryotherapy, salicylic acid, topical imiquimod, CO2 laser, candida antigen, and intralesional bleomycin. He had a diagnosis of hyperimmunoglobulin E syndrome until 2011, when he was determined to have DOCK8 immunodeficiency after genetic testing at the National Institutes of Health. In addition to verrucae, he had a personal history of eczematous dermatitis, osteomyelitis, molluscum infections, cutaneous abscesses, recurrent pneumonia, and severe food allergy...
2016: Skinmed
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