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https://www.readbyqxmd.com/read/29228448/experimental-study-on-the-prevention-of-liver-cancer-angiogenesis-via-mir-126
#1
B-Q Jing, Y Ou, L Zhao, Q Xie, Y-X Zhang
OBJECTIVE: The aim of the present work was to study the prevention of liver cancer angiogenesis via miR-126. For this purpose, experimentations were conducted. MATERIALS AND METHODS: The precursor sequence of miR-126 was amplified in the DNA of human liver cancer cell lines. We, therefore, constructed the overexpression and interference vectors of miR-126 in vitro; which were respectively transferred to liver cancer cells in the logarithmic phase and inoculated under both sides of the back skin of Balb/c-nu nude mice aged 4-6 weeks with 10 mu l (1 x 105) cell suspension...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29227546/high-levels-of-extracellular-atp-lead-to-chronic-inflammatory-response-in-melanoma-patients
#2
Aline Manica, Alexsandra Da Silva, Andreia Machado Cardoso, Marcelo Moreno, Daniela B Leal, Anielen Dutra Da Silva, Maria Rosa Chitolina Schetinger, Vera Maria Morsch, Margarete Dulce Bagatini
Skin cancer represents a serious public health problem and melanoma is considered the most significant due to its high metastasis capacity. Evasion mechanisms are the main characteristic of these tumor cells to escape of immune response. Extracellular nucleotides and nucleosides play an important role in inflammatory and immune responses. In this study, we analyzed the expression and activity of purinergic system enzymes in platelets and lymphocytes, ATP levels quantification, as well the level of pro and anti-inflammatory interleukins in the serum of 23 patients with surgical melanoma removal (CM group) and 23 control subjects (CT group)...
December 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29226422/pathogenesis-of-psoriasis-and-development-of-treatment
#3
REVIEW
Eisaku Ogawa, Yuki Sato, Akane Minagawa, Ryuhei Okuyama
The pathogenesis of psoriasis can be explained by dysregulation of immunological cell function as well as keratinocyte proliferation/differentiation. Recently, the immunological pathomechanism has been clarified substantially. Whereas T-helper (Th)1 overactivation was thought to induce occurrence of psoriasis, it has been demonstrated that Th17 cells play a key role. Th17 development is maintained by interleukin (IL)-23 mainly produced by dendritic cells. Th17 cells produce various cytokines, including IL-17A, IL-17F and IL-22...
December 10, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/29225779/risk-of-solid-cancer-in-patients-with-mast-cell-activation-syndrome-results-from-germany-and-usa
#4
Gerhard J Molderings, Thomas Zienkiewicz, Jürgen Homann, Markus Menzen, Lawrence B Afrin
Background:  It has been shown repeatedly that mast cells can promote or prevent cancer development and growth. If development and/or progression of a solid cancer is substantially influenced by mast cell activity, the frequencies of occurrence of solid cancers in patients with primary mast cells disorders would be expected to differ from the corresponding prevalence data in the general population. In fact, a recent study demonstrated that patients with systemic mastocytosis (i.e., a rare neoplastic variant of the primary mast cell activation disease) have increased risk for solid cancers, in particular melanoma and non-melanoma skin cancers...
2017: F1000Research
https://www.readbyqxmd.com/read/29222481/hypoxia-inducible-factor-prolyl-4-hydroxylase-1-is-a-convergent-point-in-the-reciprocal-negative-regulation-of-nf-%C3%AE%C2%BAb-and-p53-signaling-pathways
#5
Karim Ullah, Ann-Helen Rosendahl, Valerio Izzi, Ulrich Bergmann, Taina Pihlajaniemi, Joni M Mäki, Johanna Myllyharju
Hypoxia-inducible factor 1α (HIF1α) induces the expression of several hundred genes in hypoxia aiming at restoration of oxygen homeostasis. HIF prolyl-4-hydroxylases (HIF-P4Hs) regulate the stability of HIF1α in an oxygen-dependent manner. Hypoxia is a common feature in inflammation and cancer and the HIF pathway is closely linked with the inflammatory NF-κB and tumor suppressor p53 pathways. Here we show that genetic inactivation or chemical inhibition of HIF-P4H-1 leads to downregulation of proinflammatory genes, while proapoptotic genes are upregulated...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29221144/ucp2-overexpression-enhanced-glycolysis-via-activation-of-pfkfb2-during-skin-cell-transformation
#6
Annapoorna Sreedhar, Petra Petruska, Sumitra Miriyala, Manikandan Panchatcharam, Yunfeng Zhao
Uncoupling protein 2 (UCP2) is an inner mitochondrial membrane transporter which is often upregulated in human cancers. However, how this anion transporter affects tumorigenesis is not well understood. Using the skin cell transformation JB6 model, we demonstrated that UCP2 overexpression activated phosphofructokinase 2/fructose-2,6-bisphosphatase 2 (PFKFB2), a key regulator of glycolysis. In conjunction, upregulation of PFKFB2 expression correlated with elevated fructose 2,6-bisphosphate (Fru-2,6-P2) levels, 6-phosphofructo-1-kinase (PFK-1) activity, glucose uptake, and lactate production...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29221137/ev20-sap-a-novel-anti-her-3-antibody-drug-conjugate-displays-promising-antitumor-activity-in-melanoma
#7
Emily Capone, Francesco Giansanti, Sara Ponziani, Alessia Lamolinara, Manuela Iezzi, Annamaria Cimini, Francesco Angelucci, Rossana La Sorda, Vincenzo De Laurenzi, Pier Giorgio Natali, Rodolfo Ippoliti, Stefano Iacobelli, Gianluca Sala
Melanoma is the most biologically aggressive skin cancer of well established constitutive and induced resistance to pharmacological treatment. Despite the recent progresses in immunotherapies, many advanced metastatic melanoma patients still face a significant mortality risk. The aggressive nature of this disease sustains an urgent need for more successful, effective drugs. HER-3 - one of the four member of the tyrosin kinase epidermal growth factor receptors (EGFRs) family- is frequently overexpressed in solid tumors, including melanoma...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220430/postoperative-outcomes-in-ustekinumab-treated-patients-undergoing-abdominal-operations-for-crohn-s-disease
#8
Amy L Lightner, Nicholas P McKenna, Chung Sang Tse, Neil Hyman, Radhika Smith, Gayane Ovsepyan, Phillip Fleshner, Kristen Crowell, Walter Koltun, Marc Ferrante, Andre D'Hoore, Nathalie Lauwers, Bram Verstockt, Antonino Spinelli, Francesca DiCandido, Laura E Raffals, Kellie L Mathis, Edward V Loftus
Introduction: Ustekinumab, a monoclonal antibody targeting interleukins-12 and -23 is used to treat adults with Crohn's disease (CD). We determined the 30-day postoperative infectious complication rate among CD patients who received ustekinumab within 12 weeks prior to an abdominal operation as compared to patients who received anti-tumor necrosis factor (TNF) agents. Methods: A retrospective chart review of adults with CD who underwent an abdominal operation between 1/1/2015 and 5/1/2017 was performed across six sites...
December 6, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29220390/maldi-msi-of-melim-melanoma-searching-for-differences-in-protein-profiles
#9
Roman Guran, Lucie Vanickova, Vratislav Horak, Sona Krizkova, Petr Michalek, Zbynek Heger, Ondrej Zitka, Vojtech Adam
BACKGROUND: Treatment of advanced cutaneous melanoma remains challenging, and new data on melanoma biology are required. The most widely accepted criteria for the prognostic evaluation of melanoma are histopathological and clinical parameters, and the identification of additional tumor markers is thus of paramount importance. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI), an important tool in cancer research, is useful for unraveling the molecular profile of melanoma...
2017: PloS One
https://www.readbyqxmd.com/read/29218605/oxymatrine-sensitizes-the-hacat-cells-to-the-ifn-%C3%AE-pathway-and-downregulates-mdc-icam-1-and-socs1-by-activating-p38-jnk-and-akt
#10
Chun-Jie Gao, Pei-Jun Ding, Li-Li Yang, Xu-Feng He, Meng-Jiao Chen, Dong-Ming Wang, Yan-Xin Tian, Hui-Min Zhang
Decreased interferon (IFN)-γ levels and increased levels of macrophage-derived chemokine (MDC) and intercellular adhesion molecule (ICAM)-1 are known to be involved in allergic skin diseases, such as eczema and atopic dermatitis. Activation of the IFN-γ and its downstream interleukin-12 (IL-12) pathway can correct these diseases. Suppressor of cytokine signaling 1 (SOCS1) is a cytokine signaling inhibitor that blocks downstream pathways of IFN-γ by blocking the mitogen-activated protein kinase (MAPK) and protein kinase B (Akt) signaling pathways...
December 7, 2017: Inflammation
https://www.readbyqxmd.com/read/29218279/non-metastatic-non-melanoma-skin-cancers-our-3-years-of-clinical-experiences
#11
Elif Sari
BACKGROUND: Nonmelanoma skin cancers (NMSC) constitute the largest group of skin cancers. In this study, NMSCs were analyzed retrospectively. METHODS: Between June 2013 and March 2017, demographics and comorbidities of patients underwent reconstructive surgery for NMSC; their risk factors, types, diameters, differentiation, localizations, follow-up times, treatment methods and complications were compared and statistically analyzed. RESULTS: Totally, 163 tumors [111 basal cell carcinoma and 52 cutaneous squamous cell carcinoma (cSCC)] were excized from 148 patients (63 females, 85 males)...
September 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29217527/merkel-cell-carcinoma-in-the-age-of-immunotherapy-facts-and%C3%A2-hopes
#12
Aric Colunga, Thomas Pulliam, Paul Nghiem
Merkel cell carcinoma (MCC) is a rare (~2,000 US cases/year) but aggressive neuroendocrine tumor of the skin. For advanced MCC, cytotoxic chemotherapy only infrequently (<10% of cases) offers durable clinical responses (>1 year) suggesting a great need for improved therapeutic options. In 2008, the Merkel cell polyomavirus (MCPyV) was discovered and is clonally integrated in ~80% of MCC tumors. The remaining 20% of MCC tumors have large numbers of UV-associated mutations. Importantly, both the UV-induced-neoantigens in virus-negative tumors and the MCPyV T antigen oncogenes that are required for virus-positive tumor growth are immunogenic...
December 7, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29215830/-study-of-migration-and-distribution-of-bone-marrow-cells-transplanted-animals-with-b16-melanoma
#13
A F Poveshchenko, A O Solovieva, K E Zubareva, D N Strunkin, O B Gricyk, O V Poveshchenko, A V Shurlygina, V I Konenkov
Purpose. Reveal features migration and distribution of syngeneic bone marrow cells (BMC) and subpopulations (MSC) after transplantation into the recipient carrier B16 melanoma bodies. Methods. We used mouse male and female C57BL/6 mice. Induction of Tumor Growth: B16 melanoma cells implanted subcutaneously into right hind paw of female C57BL/6 mice at a dose of 2.5 x 105 cells / mouse. migration study in vivo distribution and BMC and MSC was performed using genetic markers - Y-chromosome specific sequence line male C57Bl/6 syngeneic intravenous transplantation in females using the polymerase chain reaction (PCR) in real time on Authorized Termal Cycler - Light Cycler 480 II / 96 (Roche)...
April 2017: Patologicheskaia Fiziologiia i èksperimental'naia Terapiia
https://www.readbyqxmd.com/read/29215650/phenocopies-in-melanoma-prone-families-with-germ-line-cdkn2a-mutations
#14
Hildur Helgadottir, Håkan Olsson, Margaret A Tucker, Xiaohong R Yang, Veronica Höiom, Alisa M Goldstein
PurposeCarriers of CDKN2A mutations have high risks of melanoma and certain other cancers. In this study we examined the occurrence of tumors among CDKN2A wild type (wt) members of melanoma-prone families with CDKN2A mutations.MethodsSwedish and US melanoma-prone families with CDKN2A mutations were included. Data was collected on tumors diagnosed among family members. Among the CDKN2A mutated families, members with CDKN2A wt status who were diagnosed with melanoma were designated phenocopies.ResultsOf patients with melanoma in the CDKN2A mutated families (n = 266), 7...
December 7, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29215446/nasal-septal-cavernous-hemangioma
#15
Ahmet Baki
Hemangiomas are benign tumors originating from the skin, mucosa, muscle, gland, and vascular tissue in the bone. Although it is common in the head and neck region, it is rarely seen in the nasal cavity and paranasal sinuses. Histologically capillary, cavernous, and mixed types are present, the most common is cavernous-type hemangioma. Cavernous hemangiomas in the nasal cavity, generally originated from the lateral nasal wall, cause symptoms as nasal obstruction and epistaxis. In the author's patient, cavernous hemangioma was originated from the nasal septum, where rarely seen...
December 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29215016/low-neurotrophin-receptor-cd271-regulates-phenotype-switching-in-melanoma
#16
Gaetana Restivo, Johanna Diener, Phil F Cheng, Gregor Kiowski, Mario Bonalli, Thomas Biedermann, Ernst Reichmann, Mitchell P Levesque, Reinhard Dummer, Lukas Sommer
Cutaneous melanoma represents the most fatal skin cancer due to its high metastatic capacity. According to the "phenotype switching" model, the aggressive nature of melanoma cells results from their intrinsic potential to dynamically switch from a high-proliferative/low-invasive to a low-proliferative/high-invasive state. Here we identify the low affinity neurotrophin receptor CD271 as a key effector of phenotype switching in melanoma. CD271 plays a dual role in this process by decreasing proliferation, while simultaneously promoting invasiveness...
December 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/29214668/photofrin%C3%A2-photodynamic-therapy-with-intratumor-photosensitizer-injection-provides-similar-tumor-response-while-reducing-systemic-skin-photosensitivity-pilot-murine-study
#17
Timothy M Baran
OBJECTIVES: The goal of this study was to compare tumor response to Photofrin® photodynamic therapy using intravenous and intratumoral injection of photosensitizer. Systemic skin photosensitivity and photosensitizer distribution were also compared between the two delivery methods. METHODS: SCCVII tumors were initiated in the hind legs of female C3H mice and grown to a volume of ∼1,000 mm3 . Photofrin® was delivered intravenously via the tail vein at a concentration of 2 mg/kg or intratumorally at concentrations ranging from 0...
December 7, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29214112/hypomelanotic-melanoma-detected-by-the-little-red-riding-hood-sign-in-a-patient-with-neurofibromatosis-type-1
#18
Roberta Giuffrida, Maximilian Uranitsch, Karin Schmid, Teresa Deinlein, Fabrizio Favero, Iris Zalaudek
Neurofibromatosis type 1 (NF1) is a genetic disorder commonly associated with an increased risk for development of malignancy, including skin cancers. Herein we describe a case of invasive melanoma occurring in a patient with NF1 and discuss the association between these two diseases, highlighting the importance of comparative clinical and dermoscopic approaches in this category of patients in which the detection of melanoma can be difficult because of the presence of multiple skin tumors.
October 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/29214089/systemic-treatment-of-metastatic-conjunctival-melanoma
#19
Simão Pinto Torres, Teresa André, Emanuel Gouveia, Lívio Costa, Maria José Passos
Conjunctival melanoma (CM) is an exceptionally rare tumor, with a propensity for local and distant recurrence, with the lungs, skin, liver, and brain being the most common sites of metastasis. Recent progress in systemic treatments, with checkpoint inhibitors and targeted therapies blocking BRAF and MEK, has redefined the standard of care of advanced unresectable and metastatic melanoma. Although most trials did not include patients with conjunctival melanoma, its close molecular and genetic relationship to cutaneous melanoma might suggest a similar response to these novel agents...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/29212216/naringin-improves-random-skin-flap-survival-in-rats
#20
Liang Cheng, Tingxiang Chen, Qiming Tu, Hang Li, Zhenghua Feng, Zhijie Li, Dingsheng Lin
Background: Random-pattern flap transfer is commonly used to treat soft-tissue defects. However, flap necrosis remains a serious problem. Naringin accelerates angiogenesis by activating the expression of vascular endothelial growth factor (VEGF). In the present study, we investigated whether naringin improves the survival of random skin flaps. Results: Compared with controls, the naringin-treated groups exhibited significantly larger mean areas of flap survival, significantly increased SOD activity and VEGF expression, and significantly reduced MDA level...
November 7, 2017: Oncotarget
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