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https://www.readbyqxmd.com/read/29054682/liposomalization-of-oxaliplatin-induces-skin-accumulation-of-it-but-negligible-skin-toxicity
#1
Kentaro Nishida, Misaki Kashiwagi, Shunsuke Shiba, Kiwamu Muroki, Akihiro Ohishi, Yusuke Doi, Hidenori Ando, Tatsuhiro Ishida, Kazuki Nagasawa
Liposomalization causes alteration of the pharmacokinetics of encapsulated drugs, and allows delivery to tumor tissues through passive targeting via an enhanced permeation and retention (EPR) effect. PEGylated liposomal doxorubicin (Doxil®, Lipo-DXR), a representative liposomal drug, is well-known to reduce cardiotoxicity and increase the anti-tumor activity of DXR, but to induce the hand-foot syndrome (HFS) as a result of skin DXR accumulation, which is one of its severe adverse effects. We have developed a new liposomal preparation of oxaliplatin (l-OHP), an important anti-tumor drug for treatment of colorectal cancer, using PEGylated liposomes (Lipo-l-OHP), and showed that Lipo-l-OHP exhibits increased anti-tumor activity in tumor-bearing mice compared to the original preparation of l-OHP...
October 17, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29053539/management-of-incompletely-excised-skin-tumors-our-experience
#2
Bernard F Robertson, James E T Wokes, Haroon Siddiqui
BACKGROUND: Current British Association of Dermatologists guidelines recommend that Mohs micrographic surgery should be considered for incompletely excised basal cell carcinomas and squamous cell carcinomas. Units that perform Mohs surgery are limited. In Teesside, the skin cancer multidisciplinary team discusses all incompletely excised skin tumors, considers all treatment options, provides recommendations, and initiates the agreed management plan. OBJECTIVE: To assess the outcome and appropriateness of local surgical macroexcision for incompletely excised skin tumors...
October 19, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29052750/impact-of-a-cd4-gene-haplotype-on-the-immune-response-in-minipigs
#3
Fany Blanc, Françoise Créchet, Nicolas Bruneau, Guillaume Piton, Jean-Jacques Leplat, Fabrice Andréoletti, Giorgia Egidy, Silvia Vincent-Naulleau, Emmanuelle Bourneuf
The cluster of differentiation 4 (CD4) molecule functions as a co-receptor for MHC class II binding to TCR in T helper cells. A CD4 epitope deficiency was identified in the swine MeLiM (melanoblastoma-bearing Libechov minipig) strain, a model for spontaneous cutaneous melanoma development and regression. Extensive sequencing revealed a high genetic variability of CD4 and the existence of several haplotypes segregating in MeLiM. Forty polymorphisms were identified in the coding sequence, out of which 20 correspond to non-synonymous variants and 10 are located in the 3'UTR of CD4 transcripts...
October 20, 2017: Immunogenetics
https://www.readbyqxmd.com/read/29050985/bromodomain-protein-brd4-promotes-cell-proliferation-in-skin-squamous-cell-carcinoma
#4
Tie Xiang, Jin-Yu Bai, Cang She, Dao-Jiang Yu, Xiao-Zhong Zhou, Tian-Lan Zhao
The present study examined the expression and biological functions of bromodomain-containing protein 4 (BRD4) in skin squamous cell carcinoma (SCC) cells. Our results show that BRD4 mRNA and protein expression was upregulated in human skin SCC cells, as compared to its level in the normal skin keratinocytes and fibroblasts. Treatment with BRD4 inhibitors, JQ1 and CPI203, resulted in proliferation inhibition, apoptosis and cell cycle arrest in both established (A431 cell line) and primary skin SCC cells. Furthermore, BRD4 knockdown (by targeted shRNAs) or knockout (by CRISPR/Cas9) largely inhibited A431 cell proliferation...
October 16, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/29050978/chrysin-attenuates-atopic-dermatitis-by-suppressing-inflammation-of-keratinocytes
#5
Jin Kyeong Choi, Yong Hyun Jang, Soyoung Lee, Sang-Rae Lee, Young-Ae Choi, Meiling Jin, Jung Ho Choi, Jee Hun Park, Pil-Hoon Park, Hyukjae Choi, Taeg Kyu Kwon, Dongwoo Khang, Sang-Hyun Kim
We previously reported the inhibitory effect of chrysin, a natural flavonoid plentifully contained in propolis, vegetables and fruits, on the mast cell-mediated allergic reaction. In this study, we evaluated the effect of chrysin on atopic dermatitis (AD) and defined underlying mechanisms of action. We used an AD model in BALB/c mice by the repeated local exposure of 2,4-dinitrochlorobenzene (DNCB) and house dust mite (Dermatophagoides farinae extract, DFE) to the ears. Repeated alternative treatment of DNCB/DFE caused AD-like skin lesions...
October 16, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29050938/tumor-suppressive-role-of-mir-1224-5p-in-keloid-proliferation-apoptosis-and-invasion-via-the-tgf-%C3%AE-1-smad3-signaling-pathway
#6
Xiaodong Yao, Xiaomei Cui, Xiaoyan Wu, Pan Xu, Wenyan Zhu, Xiaodong Chen, Tianlan Zhao
The molecular mechanism of the pathogenesis of keloids is still not known and the clinical management of keloids remains challenging. MiRNA (microRNA) is a novel class of small regulatory RNAs that has emerged as key post-transcriptional regulators of gene expression. MiRNAs participate in diverse biological processes of various skin diseases and function as key regulators in the occurrence and development of tumors. The purpose of this study was to investigate the involvement of miRNAs in keloid pathogenesis...
October 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29046794/palliative-surgery-for-giant-mucinous-carcinoma-of-the-breast-in-an-elderly-patient-a-rare-case-report
#7
Haruko Takuwa, Wakako Tsuji, Fumiaki Yotsumoto
Mucinous breast carcinoma (MBC) is relatively rare, accounting for <10% of all breast cancers in women. These tumors are usually slow-growing and exhibit less aggressive characteristics compared with other types of breast cancer. Between 1989 and 2016, 55 patients underwent surgery for MBC at the Shiga Medical Center for Adults (Moriyama, Japan). The 10-year disease-free survival (DFS) and overall survival rates were 94.5 and 100.0%, respectively. Specifically, the 10-year DFS rates of pure MBC (PMBC) and mixed MBC were 97...
October 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29046336/pp2a-inactivation-mediated-by-ppp2r4-haploinsufficiency-promotes-cancer-development
#8
Ward Sents, Bob Meeusen, Petar Kalev, Enrico Radaelli, Xavier Sagaert, Eline Miermans, Dorien Haesen, Caroline Lambrecht, Mieke Dewerchin, Peter Carmeliet, Jukka Westermarck, Anna Sablina, Veerle Janssens
Protein phosphatase 2A (PP2A) complexes counteract many oncogenic kinase pathways. In cancer cells, PP2A function can be compromised by several mechanisms, including sporadic mutations in its scaffolding A and regulatory B subunits or more frequently through overexpression of cellular PP2A inhibitors. Here we identify a novel genetic mechanism by which PP2A function is recurrently affected in human cancer, involving haploinsufficiency of PPP2R4, a gene encoding the cellular PP2A activator PTPA. Notably, up to 70% of cancer patients showed a heterozygous deletion or missense mutations in PPP2R4 Cancer-associated PTPA mutants exhibited decreased abilities to bind the PP2A-C subunit or activate PP2A and failed to reverse the tumorigenic phenotype induced by PTPA suppression, indicating they function as null alleles...
October 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/29042947/mir-124-inhibits-proliferation-migration-and-invasion-of-malignant-melanoma-cells-via-targeting-versican
#9
Ping Yang, Pingyuan Bu, Chengyuan Li
MicroRNA (miR)-124 has been implicated in malignant melanoma (MM). However, the detailed regulatory mechanism of miR-124 in the malignant phenotypes of MM cells has remained largely elusive. A total of 68 pairs of MM tissues and adjacent tissues were collected. Reverse-transcription quantitative polymerase chain reaction was used to examine the mRNA expression of versican as well as the expression of miR-124, and the protein expression of versican was assessed by western blot analysis. MTT, wound healing and Transwell assays were used to determine cell proliferation, migration and invasion, respectively...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29038621/tweak-fn14-activation-participates-in-skin-inflammation
#10
REVIEW
Qilu Liu, Shengxiang Xiao, Yumin Xia
Tumor necrosis factor- (TNF-) like weak inducer of apoptosis (TWEAK) participates in multiple biological activities via binding to its sole receptor-fibroblast growth factor-inducible 14 (Fn14). The TWEAK/Fn14 signaling pathway is activated in skin inflammation and modulates the inflammatory responses of keratinocytes by activating nuclear factor-κB signals and enhancing the production of several cytokines, including interleukins, monocyte chemotactic protein-1, RANTES (regulated on activation, normal T cell expressed and secreted), and interferon gamma-induced protein 10...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29037857/exploring-the-role-of-il-32-in-human-immunodeficiency-virus-related-kaposi-sarcoma
#11
George Semango, Bas Heinhuis, Theo S Plantinga, Willeke A M Blokx, Gibson Kibiki, Tolbert Sonda, Daudi Mavura, Elisante John Masenga, Mramba Nyindo, Andre J A M van der Ven, Leo A B Joosten
The intracellular pro-inflammatory mediator interleukin (IL)-32 is associated with tumor progression; however, the mechanisms remain unknown. We studied the IL-32 mRNA expression as well as other pro-inflammatory cytokines and mediators including IL-1α, IL-1β, IL-6, IL-8, tumor necrosis factor (TNF)-α, the pro-angiogenic and anti-apoptotic enzyme COX-2, the IL-8 receptor CXCR1, and the intracellular kinase FAK-1. The interaction of IL-32 expression with expression of IL-6, TNFα, IL-8, and COX-2 was also investigated...
October 13, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29037023/simultaneous-integrated-boost-intensity-modulated-radiotherapy-versus-3-dimensional-conformal-radiotherapy-in-preoperative-concurrent-chemoradiotherapy-for-locally-advanced-rectal-cancer
#12
Bong Kyung Bae, Min Kyu Kang, Jae-Chul Kim, Mi Young Kim, Gyu-Seog Choi, Jong Gwang Kim, Byung Woog Kang, Hye Jin Kim, Soo Yeun Park
PURPOSE: To evaluate the feasibility of simultaneous integrated boost intensity-modulated radiotherapy (SIB-IMRT) for preoperative concurrent chemoradiotherapy (PCRT) in locally advanced rectal cancer (LARC), by comparing with 3-dimensional conformal radiotherapy (3D-CRT). MATERIALS AND METHODS: Patients who were treated with PCRT for LARC from 2015 January to 2016 December were retrospectively enrolled. Total doses of 45 Gy to 50.4 Gy with 3D-CRT or SIB-IMRT were administered concomitantly with 5-fluorouracil plus leucovorin or capecitabine...
September 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29036928/plasma-mir-155-mir-203-and-mir-205-are-biomarkers-for-monitoring-of-primary-cutaneous-t-cell-lymphomas
#13
Nina Dusílková, Petra Bašová, Jindřich Polívka, Ondřej Kodet, Vojtěch Kulvait, Michal Pešta, Marek Trněný, Tomáš Stopka
Primary cutaneous T-cell lymphomas (CTCL) affect the skin and tend to transform and spread. CTCL involves primarily the Mycosis fungoides (MF) and more aggressive Sezary syndrome (SS). Oncogenic microRNAs (miRs) are stable epigenetic inhibitors often deregulated in the tumour and detectable as biomarkers in non-cellular fractions of peripheral blood. The tumour-specific expression of miR-155, miR-203, and miR-205 was shown to correctly diagnose CTCL. We herein asked whether these microRNAs can be used as plasma biomarkers for clinical CTCL monitoring...
October 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29033817/cholesterotic-fibrous-histiocytoma-in-a-patient-with-metabolic-syndrome
#14
Masatoshi Deguchi, Setsuya Aiba
Among the many variants of dermatofibroma, dermatofibroma with cholesterol cleft (cholesterotic fibrous histiocytoma) is extremely rare. Here, we describe the case of a 50-year-old male patient with a cholesterotic fibrous histiocytoma on his left lower leg. He presented with a hyperkeratotic nodule 6 mm in diameter with a brown surface on the extensor surface of his left lower leg. The lesion had developed over the course of a few years without any tendency to heal. A skin biopsy performed on the tumor showed histopathological findings compatible with those of dermatofibroma...
May 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/29033813/recurrence-of-melanoma-after-starting-apremilast-for-psoriasis
#15
Thomas G Salopek
This is a report on a 32-year-old man with a history of two previous melanomas with concurrent plaque-type psoriasis. His history dates to 2009, when he was diagnosed with his first melanoma on the right occiput, Clark's level IV, tumor thickness 1.53 mm, nonulcerated, mitotic index 1/mm(2). He subsequently developed nodal recurrence after an initial negative sentinel lymph node biopsy and was treated with complete lymph node dissection. In 2012, he was diagnosed with a second primary melanoma on the right upper chest, Clark's level IV, tumor thickness 0...
May 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/29033353/melanocyte-stem-cell-activation-and-translocation-initiate-cutaneous-melanoma-in-response-to-uv-exposure
#16
Hyeongsun Moon, Leanne R Donahue, Eunju Choi, Philip O Scumpia, William E Lowry, Jennifer K Grenier, Jerry Zhu, Andrew C White
Melanoma is one of the deadliest cancers, yet the cells of origin and mechanisms of tumor initiation remain unclear. The majority of melanomas emerge from clear skin without a precursor lesion, but it is unknown whether these melanomas can arise from melanocyte stem cells (MCSCs). Here we employ mouse models to define the role of MCSCs as melanoma cells of origin, demonstrate that MCSC quiescence acts as a tumor suppressor, and identify the extrinsic environmental and molecular factors required for the critical early steps of melanoma initiation...
October 4, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/29031526/the-temporal-artery-island-flap-a-good-reconstructive-option-for-small-to-medium-sized-facial-defects
#17
Said Algan, Murat Kara, Hakan Cinal, Ensar Zafer Barin, Akin Inaloz, Onder Tan
PURPOSE: The reconstruction of facial defects is esthetically vital because of the unique skin color and texture of the face. The aim of this study was to show the utility of different temporal artery island flap designs for the reconstruction of upper and middle facial defects without contrast to the color and texture of the face. MATERIALS AND METHODS: This study is retrospective case series conducted from November 2004 through May 2015. Patients older than 18 years with upper and middle facial defects smaller than 5 cm were included...
September 19, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29031034/-potential-of-using-vitamin-d-as-an-adjuvant-treatment-of-malignant-melanoma
#18
B Bolerázska, E Ďurovcová, M Mareková
The incidence of malignant melanoma worldwide continues to grow despite the enormous advances in topical and systemic therapy. This increase is recorded regularly even in countries where, as a result of public health campaigns, dermatological examination and subsequent treatment have become more frequent. However, there have been reports of a stable or even decreasing mortality rate that seem to contradict the objective increase in its incidence. The well-known risk factors for malignant melanoma include sunburns and occasional sunbathing, whereas regular sunbathing is associated with a lower incidence...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/29029618/balneotherapeutic-effects-of-high-mineral-spring-water-on-the-atopic-dermatitis-like-inflammation-in-hairless-mice-via-immunomodulation-and-redox-balance
#19
Johny Bajgai, Ailyn Fadriquela, Jesmin Ara, Rahima Begum, Md Faruk Ahmed, Cheol-Su Kim, Soo-Ki Kim, Kwang-Yong Shim, Kyu-Jae Lee
BACKGROUND: Atopic dermatitis (AD) is a chronic relapsing allergic inflammatory skin disease that currently affects millions of children and adults worldwide. Drugs used to treat these inflammatory diseases include anti-histamines, corticosteroids and calcineurin inhibitors but these drugs have their limitations such as adverse effects with their long-term usage. Thus, researcher's interest in several alternative and complementary therapies are continually growing and balneotherapy is one of these approaches...
October 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29028148/follow-up-of-1887-patients-receiving-tumor-necrosis-alpha-antagonists-tuberculin-skin-test-conversion-and-tuberculosis-risk
#20
Tulin Cagatay, Zuleyha Bingol, Esen Kıyan, Zeynep Yegin, Gulfer Okumus, Orhan Arseven, Feyza Erkan, Ziya Gulbaran, Mustafa Erelel, Turhan Ece, Penbe Cagatay', Zeki Kılıçaslan
OBJECTIVES: To evaluate the characteristics of patients who developed tuberculosis while receiving tumor necrosis factor-alpha (TNF-α) antagonists and the related factors with tuberculosis. METHODS: Patient's demographics, tuberculin skin test (TST), isoniazid prophylaxis, type of TNF-α antagonist were recorded. TST conversion (>5mm increase) was evaluated for patients who had baseline and 1-year TST. RESULTS: Files of 1887 patients who were receiving TNF-α antagonists between August2005 and June 2015 were evaluated...
October 13, 2017: Clinical Respiratory Journal
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