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Imiquimod

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https://www.readbyqxmd.com/read/28635518/complete-resolution-of-mycosis-fungoides-tumors-with-imiquimod-5-cream-a-case-series
#1
Daniel J Lewis, Yevgeniya A Byekova, Drew A Emge, Madeleine Duvic
OBJECTIVE: To demonstrate the clinical efficacy of topical 5% imiquimod for mycosis fungoides (MF) tumors. BACKGROUND: Treatment of tumor-stage MF represents a therapeutic challenge because of a limited number of effective topical therapies. Single tumors can be treated with localized radiation but may recur. Systemic therapies are also an option but are associated with serious adverse effects. Imiquimod is a topical agent whose efficacy has been documented in treating MF patches and plaques as well as one case of tumor-stage disease...
March 2, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28631369/inoperable-infiltrative-basal-cell-carcinoma-successfully-treated-with-vismodegib
#2
Omid Zargari, Seyyede Zeinab Azimi, Siamak Geranmayeh
Basal cell carcinoma (BCC) is the most common skin cancer but usually has a good prognosis. However, there is a subset of BCC cases with a less favorable prognosis. For patients with locally advanced, recurrent or metastatic BCCs who are not suitable for surgery or radiotherapy, small-molecule drug inhibitors of hedgehog pathway are a new therapeutic opportunity. Here, we present a case of infiltrative BCC with multiple recurrences. Wide excision with reconstructive plastic surgery was performed initially with adjuvant radiotherapy...
June 19, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28629978/dual-roles-of-tpgs-based-microemulsion-for-tacrolimus-enhancing-the-percutaneous-delivery-and-anti-psoriatic-efficacy
#3
Tao Wan, Jingtong Pan, Yueming Long, Kaiyue Yu, Yixuan Wang, Wenhui Pan, Wenyi Ruan, Mengyao Qin, Chuanbin Wu, Yuehong Xu
In this study, we demonstrate for the first time the dual roles of Tocopheryl Polyethylene Glycol 1000 Succinate (TPGS) based microemulsion (ME) for tacrolimus (TAC) to enhance TAC percutaneous delivery and anti-psoriatic efficacy. The ME formulation was developed and optimized based on pseudo-ternary phase diagrams combined with in vitro permeation. The result of Fourier transform infrared spectroscopy (FTIR) demonstrated that TAC was completely solubilized in the TPGS-ME. In vitro permeation studies showed that TPGS-ME enhanced TAC permeation through and into the skin, and the enhanced deposition of TAC in the normal or psoriatic skin was further confirmed in vivo...
June 16, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28629922/vaccination-with-a-codon-optimized-a27l-containing-plasmid-decreases-virus-replication-and-dissemination-after-vaccinia-virus-challenge
#4
Osmarie Martínez, Ariana Bravo Cruz, Saritza Santos, Maite Ramírez, Eric Miranda, Joanna Shisler, Miguel Otero
Smallpox is a disease caused by Variola virus (VARV). Although eradicated by WHO in 1980, the threat of using VARV on a bioterror attack has increased. The current smallpox vaccine ACAM2000, which consists of live vaccinia virus (VACV), causes complications in individuals with a compromised immune system or with previously reported skin diseases. Thus, a safer and efficacious vaccine needs to be developed. Previously, we reported that our virus-free DNA vaccine formulation, a pVAX1 plasmid encoding codon-optimized VACV A27L gene (pA27LOPT) with and without Imiquimod adjuvant, stimulates A27L-specific production of IFN-γ and increases humoral immunity 7days post-vaccination...
June 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28620298/anti-tumor-activity-of-toll-like-receptor-7-agonists
#5
REVIEW
Huju Chi, Chunman Li, Flora Sha Zhao, Li Zhang, Tzi Bun Ng, Guangyi Jin, Ou Sha
Toll-like receptors (TLRs) are a class of pattern recognition receptors that play a bridging role in innate immunity and adaptive immunity. The activated TLRs not only induce inflammatory responses, but also elicit the development of antigen specific immunity. TLR7, a member of TLR family, is an intracellular receptor expressed on the membrane of endosomes. TLR7 can be triggered not only by ssRNA during viral infections, but also by immune modifiers that share a similar structure to nucleosides. Its powerful immune stimulatory action can be potentially used in the anti-tumor therapy...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28602508/cyr61-ccn1-induces-ccl20-production-by-keratinocyte-via-activating-p38-and-jnk-ap-1-pathway-in-psoriasis
#6
Huidan Li, Haichuan Li, Rongfen Huo, Pinru Wu, Zhengyu Shen, Hui Xu, Baihua Shen, Ningli Li
BACKGROUND: Psoriasis is a common chronic skin disease characterized by epidermal hyperplasia and inflammation. Cysteine-rich angiogenic inducer 61 (Cyr61/CCN1) has recently been implicated in psoriasis pathogenesis by promoting keratinocyte activation. However, the mechanisms by which CCN1 enhances cutaneous inflammation are not fully understood. OBJECTIVE: In this study, we investigated the role of CCN1 on the expression of CCL20 in human keratinocyte. METHODS AND RESULTS: By double-label immunofluorescence staining, we first identified that the expression of CCN1 colocalized well with CCL20 production in the epidermis of psoriasis skin lesion...
June 1, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28601430/imiquimod-induced-autophagy-is-regulated-by-er-stress-mediated-pkr-activation-in-cancer-cells
#7
Shu-Hao Chang, Shi-Wei Huang, Sin-Ting Wang, Kai-Cheng Chung, Chia-Wei Hsieh, Jun-Kai Kao, Yi-Ju Chen, Chun-Ying Wu, Jeng-Jer Shieh
BACKGROUND: Autophagy is a highly conserved cellular catabolic pathway for degradation and recycling of intracellular components in response to nutrient starvation or environmental stress. Endoplasmic reticulum (ER) homeostasis can be disturbed by physiological and pathological influences, resulting in accumulation of misfolded and unfolded proteins in the ER lumen, a condition referred to as ER stress. Imiquimod (IMQ), a Toll-like receptor (TLR) 7 ligand, possesses anti-tumor and anti-viral activities in vitro and in vivo...
May 2, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28600817/il17a-dependent-asymmetric-stem-cell-divisions-are-increased-in-human-psoriasis-a-mechanism-underlying-benign-hyperproliferation
#8
Alexandra Charruyer, Stephen Fong, Giselle Vitcov, Samuel Sklar, Leah Tabernik, Monica Taneja, Melinda Caputo, Catherine Soeung, Lili Yue, Yoshi Uchida, Sarah T Arron, Karen Horton, Robert Foster, Shigetoshi Sano, Jeffrey North, Ruby Ghadially
The balance between asymmetric and symmetric stem cell (SC) divisions is key to tissue homeostasis and dysregulation of this balance has been shown in cancers. We hypothesized that the balance between asymmetric SC divisions (ACDs) and symmetric cell divisions (SCDs) would be dysregulated in the benign hyperproliferation of psoriasis. We found that, whereas SCDs were increased in squamous cell carcinoma (SCC) (human and murine), ACDs were increased in the benign hyperproliferation of psoriasis (human and murine)...
June 10, 2017: Stem Cells
https://www.readbyqxmd.com/read/28600473/human-papillomavirus-dna-methylation-predicts-response-to-treatment-using-cidofovir-and-imiquimod-in-vulval-intraepithelial-neoplasia-3
#9
Sadie Esme Fleur Jones, Samantha Hibbitts, Christopher N Hurt, Dean Bryant, Alison N Fiander, Ned G Powell, Amanda J Tristram
Purpose <p>Response rates to treatment of vulval intraepithelial neoplasia (VIN) with imiquimod and cidofovir are approximately 57% and 61% respectively. Treatment is associated with significant side effects and, if ineffective, risk of malignant progression. Treatment response is not predicted by clinical factors. Identification of a biomarker that could predict response is an attractive prospect. This work investigated HPV DNA methylation as a potential predictive biomarker in this setting.</p> <p>Experimental design</p> <p>DNA from 167 cases of VIN 3 from the RT3 VIN clinical trial was assessed...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28597172/the-p2x7-receptor-is-not-essential-for-development-of-imiquimod-induced-psoriasis-like-inflammation-in-mice
#10
Nicholas J Geraghty, Kylie J Mansfield, Stephen J Fuller, Debbie Watson, Ronald Sluyter
Psoriasis is a chronic inflammatory skin disorder, characterised by epidermal hyperplasia (acanthosis) and leukocyte infiltration of the skin. Current therapies are inadequate, highlighting the need for new therapeutic targets. The P2X7 receptor is implicated in the pathogenesis of psoriasis. This study investigated the role of P2X7 in imiquimod (IMQ)-induced psoriasis-like inflammation. Topically applied IMQ caused twofold greater ear swelling in BALB/c mice compared to C57BL/6 mice, which encode a partial loss-of-function missense mutation in the P2RX7 gene...
June 8, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28597024/blocking-mtor-signalling-with-rapamycin-ameliorates-imiquimod-induced-psoriasis-in-mice
#11
Claudia Bürger, Nitesh Shirsath, Victoria Lang, Sandra Diehl, Roland Kaufmann, Andreas Weigert, Ying-Ying Han, Christian Ringel, Peter Wolf
The mTOR (mechanistic target of rapamycin) inhibitor rapamycin has long been known for its immune suppressive properties, but it has shown limited therapeutic success when given systemically to patients with psoriasis. Recent data have shown that the mTOR pathway is hyperactivated in lesional psoriatic skin, which probably contributes to the disease by interfering with maturation of keratinocytes. This study investigated the effect of topical rapamycin treatment in an imiquimod-induced psoriatic mouse model...
June 9, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28595996/tapinarof-is-a-natural-ahr-agonist-that-resolves-skin-inflammation-in-mice-and-humans
#12
Susan H Smith, Channa Jayawickreme, David J Rickard, Edwige Nicodeme, Thi Bui, Cathy Simmons, Christine M Coquery, Jessica Neil, William M Pryor, David Mayhew, Deepak K Rajpal, Katrina Creech, Sylvia Furst, James Lee, Dalei Wu, Fraydoon Rastinejad, Timothy M Willson, Fabrice Viviani, David C Morris, John T Moore, Javier Cote-Sierra
Tapinarof (GSK2894512) is a naturally derived topical treatment with demonstrated efficacy for psoriasis and atopic dermatitis (AD) patients, although the biologic target and mechanism of action had been unknown. We demonstrate that the anti-inflammatory properties of tapinarof are mediated through activation of the Aryl hydrocarbon Receptor (AhR). We show that tapinarof binds and activates AhR in multiple cell types, including cells of the target tissue -human skin. In addition, tapinarof moderates proinflammatory cytokine expression in stimulated peripheral blood CD4+ T cells and ex vivo human skin, and impacts barrier gene expression in primary human keratinocytes; both of these processes are likely to be downstream of AhR activation based on current evidence...
June 5, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28579438/imiquimod-induced-apoe-deficient-mice-might-be-a-composite-animal-model-for-the-study-of-psoriasis-and-dyslipideamia-comorbidity
#13
Xinran Xie, Lei Zhang, Yan Lin, Yan Wang, Weihong Liu, Xue Li, Ping Li
BACKGROUND: Psoriasis patients are at increased risk of developing lipid metabolism disturbances. Both psoriasis and dyslipideamia not only closely interact in disease development, but occur as mutual side effects in some medicine treatment. The interactive mechanism of the two diseases is complicated and still unclear. OBJECTIVE: Here, we proposed applying imiquimod on the dorsal skin of ApoE(-/-) mice to establish a composite animal model which formed psoriasiform skin lesions under hyperlipidemic condition...
May 17, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28570931/il-17a-causes-depression-like-symptoms-via-nf%C3%AE%C2%BAb-and-p38mapk-signaling-pathways-in-mice-implications-for-psoriasis-associated-depression
#14
Ahmed Nadeem, Sheikh F Ahmad, Naif O Al-Harbi, Ali S Fardan, Ahmed M El-Sherbeeny, Khalid E Ibrahim, Sabry M Attia
Psoriasis has been shown to be associated with an increased prevalence of comorbid major depression. IL-17A plays an important role in both depression and psoriasis. IL-17A has been shown to be elevated in systemic circulation of psoriatic patients. IL-17A released from different immune cells during psoriasis may be responsible for the development of neuropsychiatric symptoms associated with depression. Therefore, this study explored the association of systemic IL-17A with depression. The present study utilized imiquimod model of psoriatic inflammation as well as IL-17A administration in mice to investigate the effect of IL-17A on depression-like behavior...
May 26, 2017: Cytokine
https://www.readbyqxmd.com/read/28570274/tristetraprolin-expression-by-keratinocytes-controls-local-and-systemic-inflammation
#15
Mathieu Andrianne, Assiya Assabban, Caroline La, Denis Mogilenko, Delphine Staumont Salle, Sébastien Fleury, Gilles Doumont, Gaëtan Van Simaeys, Sergei A Nedospasov, Perry J Blackshear, David Dombrowicz, Stanislas Goriely, Laurye Van Maele
Tristetraprolin (TTP, encoded by the Zfp36 gene) regulates the mRNA stability of several important cytokines. Due to the critical role of this RNA-binding protein in the control of inflammation, TTP deficiency leads to the spontaneous development of a complex inflammatory syndrome. So far, this phenotype has been largely attributed to dysregulated production of TNF and IL‑23 by myeloid cells, such as macrophages or DCs. Here, we generated mice with conditional deletion of TTP in keratinocytes (Zfp36fl/flK14-Cre mice, referred to herein as Zfp36ΔEP mice)...
June 2, 2017: JCI Insight
https://www.readbyqxmd.com/read/28566057/sinecatechins-and-imiquimod-as-proactive-sequential-therapy-of-external-genital-and-perianal-warts-in-adults
#16
Helmut Schöfer, Silvio Tatti, Charles W Lynde, Mihael Skerlev, Jana Hercogová, Maria Rotaru, Juan Ballesteros, Piergiacomo Calzavara-Pinton
This review about the proactive sequential therapy (PST) of external genital and perianal warts (EGW) is based on the most current available clinical literature and on the broad clinical experience of a group of international experts, physicians who are well versed in the treatment of human papillomavirus-associated diseases. It provides a practical guide for the treatment of EGW, including epidemiology, etiology, clinical appearance, and diagnostic procedures for these viral infections. Furthermore, the treatment goals and current treatment options, elucidating provider- and patient-applied therapies, and the parameters driving treatment decisions are summarized...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28543730/treatment-of-disseminated-superficial-actinic-porokeratosis-with-oral-alitretinoin
#17
B J Park, E H Oh, J E Kim, J Y Ko, Y S Ro
Disseminated superficial actinic porokeratosis (DSAP), the most common type of porokeratosis, usually presents as large numbers of lesions on sun-exposed skin. Although several treatment options including corticosteroids, keratolytics, 5-fluorouracil, imiquimod, vitamin D3 analogues, cryotherapy, curettage, laser therapy and dermabrasion may be considered, there is no evidence-based standard treatment.(1-2) Patient 1 was a 26-year-old female who presented with a 2-year history of progressive scaly macules on both upper and lower extremities...
May 22, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28543397/a-case-of-porokeratosis-ptychotropica-successful-treatment-with-topical-5-imiquimod-cream
#18
Y Kawakami, S Mitsui
No abstract text is available yet for this article.
May 22, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28539706/multiple-immunosuppressive-effects-of-cpg-c41-on-intracellular-tlr-mediated-inflammation
#19
Wancheng Liu, Xuejiao Yang, Ning Wang, Shijun Fan, Yuanfeng Zhu, Xinchuan Zheng, Yan Li
A growing body of literature suggests that most chronic autoimmune diseases are associated with inappropriate inflammation mediated by Toll-like receptor (TLR) 3, TLR7/8, or TLR9. Therefore, research into blocking TLR activation to treat these disorders has become a hot topic. Here, we report the immunomodulatory properties of a nonstimulatory CpG-containing oligodeoxynucleotide (CpG-ODN), CpG-c41, which had previously only been known as a TLR9 antagonist. In this study, we found that both in vitro and in vivo CpG-c41 decreased levels of various proinflammatory factors that were induced by single activation or coactivation of intracellular TLRs, but not membrane-bound TLRs, no matter what downstream signal pathways the TLRs depend on...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28521677/molluscum-contagiosum-an-update
#20
Alexander Kc Leung, Benjamin Barankin, Kam Lun Hon
BACKGROUND: Molluscum contagiosum is a viral cutaneous infection in childhood that occurs worldwide. Physicians should familiarize themselves with this common condition. OBJECTIVE: To review in depth the epidemiology, pathophysiology, clinical manifestations, complications and, in particular, treatment of molluscum contagiosum. METHODS: A PubMed search was completed in Clinical Queries using the key term "molluscum contagiosum". Patents were searched using the key term "molluscum contagiosum" from www...
May 17, 2017: Recent Patents on Inflammation & Allergy Drug Discovery
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