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https://www.readbyqxmd.com/read/28222357/mangiferin-antagonizes-tnf-%C3%AE-mediated-inflammatory-reaction-and-protects-against-dermatitis-in-a-mice-model
#1
Yunpeng Zhao, Wenhan Wang, Xihai Wu, Xiaoqian Ma, Ruize Qu, Xiaomin Chen, Chenghao Liu, Yaoge Liu, Xiaokai Wang, Pengcheng Yan, Hao Zhang, Jingrui Pan, Weiwei Li
This study aimed to investigate whether mangiferin played a protective role in a well-established dermatitis mouse model and tumor necrosis factor alpha (TNF-α)-induced RAW264.7 macrophages. Contact dermatitis is an inflammatory skin disease in the clinic, while its underlying mechanism still remains to be elucidated. Mangiferin, 1,3,6,7-tetrahydroxyxanthone-C2-β-d-glucoside (C-glucosyl xanthone), a natural antioxidant that was reported to inhibit inflammatory reactions, has been recently proved to be a potential therapy for inflammation...
February 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28222309/gemcitabine-erlotinib-versus-gemcitabine-erlotinib-capecitabine-in-the-first-line-treatment-of-patients-with-metastatic-pancreatic-cancer-efficacy-and-safety-results-of-a-phase-iib-randomised-study-from-the-spanish-ttd-collaborative-group
#2
Antonio Irigoyen, Javier Gallego, Carmen Guillén Ponce, Ruth Vera, Vega Iranzo, Inmaculada Ales, Sara Arévalo, Aleydis Pisa, Marta Martín, Antonieta Salud, Esther Falcó, Alberto Sáenz, José Luis Manzano Mozo, Gema Pulido, Joaquina Martínez Galán, Roberto Pazo-Cid, Fernando Rivera, Teresa García García, Olbia Serra, Eva Ma Fernández Parra, Alicia Hurtado, Ma José Gómez Reina, Luis Jesús López Gomez, Esther Martínez Ortega, Manuel Benavides, Enrique Aranda
BACKGROUND: Gemcitabine and erlotinib have shown a survival benefit in the first-line setting in metastatic pancreatic cancer (mPC). The aim of this study was to assess whether combining capecitabine (C) with gemcitabine + erlotinib (GE) was safe and effective versus GE in patients with mPC. PATIENTS AND METHODS: Previously untreated mPC patients were randomised to receive G (1000 mg/m(2), days 1, 8, 15) + E (100 mg/day, days 1-28) + C (1660 mg/m(2), days 1-21) or GE, q4 weeks, until progression or unacceptable toxicity...
February 17, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28222202/tsc1-and-tsc2-gene-mutations-and-their-implications-for-treatment-in-tuberous-sclerosis-complex-a-review
#3
Clévia Rosset, Cristina Brinckmann Oliveira Netto, Patricia Ashton-Prolla
Tuberous sclerosis complex is an autosomal dominant disorder characterized by skin manifestations and formation of multiple tumors in different organs, mainly in the central nervous system. Tuberous sclerosis is caused by the mutation of one of two tumor suppressor genes, TSC1 or TSC2. Currently, the development of novel techniques and great advances in high-throughput genetic analysis made mutation screening of the TSC1 and TSC2 genes more widely available. Extensive studies of the TSC1 and TSC2 genes in patients with TSC worldwide have revealed a wide spectrum of mutations...
February 20, 2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28221211/a-rare-case-of-ck20-ck7-double-negative-merkel-cell-carcinoma
#4
Mary D Le, Luke H OʼSteen, David S Cassarino
The authors present a case of Merkel cell carcinoma (MCC) with unique immunohistochemical staining characteristics. A 57-year-old woman presented with a firm 0.3 cm tan papule on her left nasal-labial fold that was reportedly increasing in size and bleeding. She had a history of multiple head and neck actinic keratoses, papillary thyroid carcinoma, and a family history of an uncle with melanoma. The clinical differential diagnosis was "non-melanoma skin cancer." Histological examination showed a markedly atypical-appearing basaloid neoplasm, present mostly in the dermis, with focal pagetoid spread into the epidermis...
March 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28220371/multiple-nonsyndromic-acquired-basal-cell-carcinomas-uncommon-clinical-presentation-in-a-bulgarian-patient
#5
Georgi Tchernev, Ivan Pidakev, Ilia Lozev, Torello Lotti, Uwe Wollina
Basal cell carcinoma is the most frequent cutaneous neoplasm, with slowly progressive nature and locally invasive behavior. Despite the low metastatic potential, local tissue destruction and disfigurement caused by the tumor can be large if not eradicated in time by early diagnosis and treatment. Both genetic predisposition and exposure to environmental risks are involved in the pathogenesis of the malignant transformation in BCC. The total number of nonmelanocytic skin cancers is a risk factor for recurrence of previous tumor, on the one hand, as well as for the formation of new ones, on the other...
February 20, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28218743/vitamin-d-signaling-and-melanoma-role-of-vitamin-d-and-its-receptors-in-melanoma-progression-and-management
#6
REVIEW
Andrzej T Slominski, Anna A Brożyna, Michal A Zmijewski, Wojciech Jóźwicki, Anton M Jetten, Rebecca S Mason, Robert C Tuckey, Craig A Elmets
Ultraviolet B (UVB), in addition to having carcinogenic activity, is required for the production of vitamin D3 (D3) in the skin which supplies >90% of the body's requirement. Vitamin D is activated through hydroxylation by 25-hydroxylases (CYP2R1 or CYP27A1) and 1α-hydroxylase (CYP27B1) to produce 1,25(OH)2D3, or through the action of CYP11A1 to produce mono-di- and trihydroxy-D3 products that can be further modified by CYP27B1, CYP27A1, and CYP24A1. The active forms of D3, in addition to regulating calcium metabolism, exert pleiotropic activities, which include anticarcinogenic and anti-melanoma effects in experimental models, with photoprotection against UVB-induced damage...
February 20, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28218741/identification-of-micrornas-associated-with-invasive-and-aggressive-phenotype-in-cutaneous-melanoma-by-next-generation-sequencing
#7
Sankhiros Babapoor, Rong Wu, James Kozubek, Donna Auidi, Jane M Grant-Kels, Soheil S Dadras
A comprehensive repertoire of human microRNAs (miRNAs) that could be involved in early melanoma invasion into the dermis remains unknown. To this end, we sequenced small RNAs (18-30 nucleotides) isolated from an annotated series of invasive melanomas (average invasive depth, 2.0 mm), common melanocytic nevi, and matched normal skin (n=28). Our previously established bioinformatics pipeline identified 765 distinct mature known miRNAs and defined a set of top 40 list that clearly segregated melanomas into thin (0...
February 20, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28218687/uv-radiation-from-physics-to-impacts
#8
EDITORIAL
Hanns Moshammer, Stana Simic, Daniela Haluza
Ultraviolet (UV) radiation has affected life at least since the first life forms moved out of the seas and crawled onto the land. Therefore, one might assume that evolution has adapted to natural UV radiation. However, evolution is mostly concerned with the propagation of the genetic code, not with a long, happy, and fulfilling life. Because rickets is bad for a woman giving birth, the beneficial effects of UV-radiation outweigh the adverse effects like aged skin and skin tumors of various grades of malignancy that usually only afflict us at older age...
February 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28218467/divergent-roles-of-p120-catenin-isoforms-linked-to-altered-cell-viability-proliferation-and-invasiveness-in-carcinogen-induced-rat-skin-tumors
#9
Rong Wang, Ying-Shiuan Chen, Wan-Mohaiza Dashwood, Qingjie Li, Christiane V Löhr, Kay Fischer, Emily Ho, David E Williams, Roderick H Dashwood
The heterocyclic amine 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) targets multiple organs for tumorigenesis in the rat, including the colon and the skin. PhIP-induced skin tumors were subjected to mutation screening, which identified genetic changes in Hras (7/40, 17.5%) and Tp53 (2/40, 5%), but not in Ctnnb1, a commonly mutated gene in PhIP-induced colon tumors. Despite the absence of Ctnnb1 mutations, β-catenin was overexpressed in nuclear and plasma membrane fractions from PhIP-induced skin tumors, coinciding with loss of p120-catenin from the plasma membrane, and the appearance of multiple p120-catenin-associated bands in the nuclear extracts...
February 20, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28218424/p16-ink4a-enhances-the-transcriptional-and-the-apoptotic-functions-of-p53-through-dna-dependent-interaction
#10
Huda H Al-Khalaf, Shreeram C Nallar, Dhananjaya V Kalvakolanu, Abdelilah Aboussekhra
p16(INK4A) and p53 are two important tumor suppressor proteins that play essential roles during cell proliferation and aging through regulating the expression of several genes. Here, we report that p16(INK4A) and p53 co-regulate a plethora of transcripts. Furthermore, both proteins colocalize in the nucleus of human primary skin fibroblasts and breast luminal cells, and form a heteromer whose level increases in response to genotoxic stress as well as aging of human fibroblasts and various mouse organs. CDK4 is also present in this heteromeric complex, which is formed only in the presence of DNA both in vitro using pure recombinant proteins and in vivo...
February 20, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28217647/wound-healing-effect-of-arnebia-euchroma-gel-on-excisional-wounds-in-rats
#11
Maryam Mohsenikia, Shahrzad Khakpour, Zahra Azizian, Soheil Ashkani-Esfahani, Seyyede Tahereh Razavipour, Pooya Toghiani
BACKGROUND: Wound healing is a complex process leading to regeneration of damaged skin tissue. Arnebia euchroma (AE) have many effective activities such as anti-inflammatory, antimicrobial, antioxidative, and anti-tumoral effects. The extract of AE has positive effects on burn wounds. This study is designed to investigate the healing effects of AE on excisional wounds in rats. MATERIALS AND METHODS: Thirty six rats with the age of 8 weeks divided into three groups...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28216820/siliconomas-of-the-lower-limb-tumour-like-excision-and-reconstruction
#12
Tommaso Agostini, Raffaella Perello
BACKGROUND: Silicone oil injection can cause several complications including pain, cellulitis, abscesses, skin compromise, migration, embolism and multiorgan failure. Oil-infested tissue excision remains the solely treatment to prevent such complications. OBJECTIVES: The authors evaluate tumor-like excision of the oil-infested tissue as a treatment for patients experiencing silicone injections in the lower limbs, to both preserve aesthetic appearance and solve further risk of complication from silicone...
September 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28216726/desert-dermatoses-thar-desert-india
#13
Col Manas Chatterjee
Desert dermatology describes the cutaneous changes and the diseases affecting those living in the desert. Diurnal variation in temperature is high and is characteristic of the deserts. The lack of water affects daily activities and impacts dermatological conditions. Adaptation to the desert is, therefore, important to survival. Infections are the most common conditions seen among this population, and among them, fungal infections are the most common. The high incidence of these infections would be accounted for by the poor hygienic conditions due to lack of bathing facilities due to scarcity of water and the consequent sweat retention and overgrowth of cutaneous infective organisms...
January 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28215146/molecular-characterization-and-in-silico-analysis-of-the-tissue-inhibitor-of-metalloproteinases-3-timp-3-gene-of-canine-mammary-tumor
#14
Pavan Kumar Yadav, Brijesh Singh Yadav, Padma Nibash Panigrahi, Vijay Tripathi, Navaneet Chaturvedi, Meena Kataria
BACKGROUND: Mammary tumors are the second most common tumors (after skin tumors) in female dogs (Canis lupus familiaris). Tissue Inhibitor of Metlloproteinases-3 (TIMP-3) is a matrix associated endogenous inhibitor of Matrix Metalloproteinases (MMPs). Cancer metastasis occurs as a result of imbalance between MMPs and TIMPs. TIMP-3 is involved significantly in regulation of MMPs as well as progression of canine mammary tumor. OBJECTIVE: The present study was conducted to identify the structural and functional relationship between TIMP-3 and MMP which can aid in identifying the role of these proteins in canine mammary tumor...
February 17, 2017: Combinatorial Chemistry & High Throughput Screening
https://www.readbyqxmd.com/read/28214470/myopericytoma-in-urinary-bladder-a-case-report
#15
Takahiro Nagai, Toshio Kamimura, Kaoru Itou, Masato Fujii, Hiromasa Tsukino, Shoichiro Mukai, Yutaka Akiyama, Hiroaki Kataoka, Toshiyuki Kamoto
BACKGROUND: Myopericytoma is reported to occur mainly in the skin and superficial soft tissue of the extremities. In contrast, occurrence in the urinary bladder is extremely rare. CASE PRESENTATION: We describe a 75-year-old Japanese man who developed a submucosal tumor at the right trigone of his bladder that led to interference with the discharge of right ureteral calculus. No invasive growth was observed by magnetic resonance imaging. Transurethral resection was successfully performed; histopathological analysis revealed perivascular proliferation of spindle-shaped to oval-shaped, cytologically bland tumor cells with eosinophilic cytoplasm...
February 19, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28212889/inhibition-of-proliferation-and-invasion-in-2d-and-3d-models-by-2-methoxyestradiol-in-human-melanoma-cells
#16
R R Massaro, F Faião-Flores, V W Rebecca, S Sandri, D K Alves-Fernandes, P C Pennacchi, K S M Smalley, S S Maria-Engler
Despite the recent advances in the clinical management of melanoma, there remains a need for new pharmacological approaches to treat this cancer. 2-methoxyestradiol (2ME) is a metabolite of estrogen that has shown anti-tumor effects in many cancer types. In this study we show that 2ME treatment leads to growth inhibition in melanoma cells, an effect associated with entry into senescence, decreased pRb and CyclinB1 expression, increased p21/Cip1 expression and G2/M cell cycle arrest. 2ME treatment also inhibits melanoma cell growth in colony formation assays, including cell lines with acquired resistance to BRAF and BRAF+MEK inhibitors...
February 14, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28212731/hamlet-a-protein-lipid-complex-with-broad-tumoricidal-activity
#17
REVIEW
James C S Ho, Aftab Nadeem, Catharina Svanborg
HAMLET (Human Alpha-lactalbumin Made LEthal to Tumor cells) is a tumoricidal protein-lipid complex with broad effects against cancer cells of different origin. The therapeutic potential is emphasized by a high degree of specificity for tumor tissue. Here we review early studies of HAMLET, in collaboration with the Orrenius laboratory, and some key features of the subsequent development of the HAMLET project. The early studies focused on the apoptotic response that accompanies death in HAMLET treated tumor cells and the role of mitochondria in this process...
January 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28212537/itraconazole-exerts-its-anti-melanoma-effect-by-suppressing-hedgehog-wnt-and-pi3k-mtor-signaling-pathways
#18
Guanzhao Liang, Musang Liu, Qiong Wang, Yongnian Shen, Huan Mei, Dongmei Li, Weida Liu
Malignant melanoma is the deadliest form of all skin cancers. Itraconazole, a commonly used systemic antifungal drug, has been tested for its anti-tumor effects on basal cell carcinoma, prostate cancer, and non-small cell lung cancer. Whether itraconazole has any specific anti-tumor effect on melanoma remains unknown. However, the goal of this study is to investigate the effect of itraconazole on melanoma and to reveal some details of its underlying mechanism. In the in vivo xenograft mouse model, we find that itraconazole can inhibit melanoma growth and extend the survival of melanoma xenograft mice, compared to non-itraconazole-treated mice...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212124/extracranial-meningioma-presenting-as-an-eyebrow-mass
#19
Do Hun Lee, Ho Seup Sim, Jae Ha Hwang, Kwang Seog Kim, Sam Yong Lee
Meningiomas originate in the central nervous system and are the most common intracranial benign tumor. However, although rarely, they can develop extracranially. Primary extracranial meningiomas are frequently misdiagnosed, resulting in inappropriate clinical management. The most common sites of extracranial meningiomas include the skull, scalp, orbit, nose, paranasal sinuses, middle ear, neck, and skin. A 77-year-old woman presented with a mass on her left eyebrow. Computed tomography revealed an enhancing soft tissue mass in the left frontal area...
February 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28211972/tsc2-c-1864c-t-variant-associated-with-mild-cases-of-tuberous-sclerosis-complex
#20
Laura S Farach, William T Gibson, Steven P Sparagana, Mark Nellist, Connie T R M Stumpel, Marja Hietala, Elliott Friedman, Deborah A Pearson, Susan P Creighton, Annemiek Wagemans, Reveel Segel, Efrat Ben-Shalom, Kit Sing Au, Hope Northrup
Tuberous sclerosis complex (TSC) is an autosomal dominantly inherited disorder with variable expressivity associated with hamartomatous tumors, abnormalities of the skin, and neurologic problems including seizures, intellectual disability, and autism. TSC is caused by pathogenic variants in either TSC1 or TSC2. In general, TSC2 pathogenic variants are associated with a more severe phenotype than TSC1 pathogenic variants. Here, we report a pathogenic TSC2 variant, c.1864C>T, p.(Arg622Trp), associated with a mild phenotype, with most carriers meeting fewer than two major clinical diagnostic criteria for TSC...
March 2017: American Journal of Medical Genetics. Part A
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