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https://www.readbyqxmd.com/read/28225978/daylight-photodynamic-therapy-experience-and-safety-in-treatment-of-actinic-keratoses-of-the-face-and-scalp-in-low-latitude-and-high-brightness-region
#1
Luiz Eduardo Garcia Galvão, Heitor de Sá Gonçalves, Karine Paschoal Botelho, Juliana Chagas Caldas
Daylight photodynamic therapy has been used in countries with high latitudes during the summer for actinic keratoses treatment with reports of similar efficacy to conventional photodynamic therapy. We evaluate its safety in 20 patients in the city of Fortaleza, a local with low latitude and high brightness. Sixteen patients did not report any discomfort due to the procedure. Daylight photodynamic therapy is an easy application method with great tolerability by the patient and has the possibility of being performed throughout the year in these regions...
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28225494/a-unique-case-of-inflammatory-fibroid-polyp-in-the-duodenum-of-a-female-adolescent-case-report-and-literature-review
#2
Mauricio Giusti Calderon, Valéria Campos Caivano, Sauro Bagnaresi, José Ozório de Oliveira Lira, Rodrigo Daminello Raimundo, Luiz Carlos de Abreu, João Antonio Correa
BACKGROUND: Inflammatory fibroid polyp (IFP) is a very rare benign condition in children that can occur throughout the gastrointestinal tract. It is characterized as a polypoid lesion originating in the submucosa, composed of connective tissue and eosinophilic infiltrate. It is most common in the stomach and in adults between the fifth and seventh decades of life. Its occurrence is unusual in the duodenum. CASE SUMMARY: One case of duodenal IFP was described and the literature is reviewed with emphasis on the clinical and pathological features of IFP in children...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28225074/the-wasp-arp2-3-complex-signal-cascade-is-involved-in-actin-dependent-sperm-nuclei-migration-during-double-fertilization-in-tobacco-and-maize
#3
Xiongbo Peng, Tingting Yan, Mengxiang Sun
Sperm nuclear migration during fertilization in Arabidopsis and rice has recently been found to be actin-dependent, but the driving force behind this actin cytoskeleton-dependent motion is unclear. Here, we confirmed that the actin-dependent sperm nuclei migration during fertilization is a conserved mechanism in plants. Using in vitro fertilization systems, we showed that a functional actin is also essential in maize and tobacco for sperm nuclei migration after gamete membrane fusion. Cytoskeleton depolymerization inhibitor treatments supported the view that sperm nuclei migration is actin-dependent but microtubule-independent in both egg cell and central cell during double fertilization...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224388/ocular-safety-of-intravitreal-clindamycin-hydrochloride-released-by-plga-implants
#4
Gabriella M Fernandes-Cunha, Silvia Ligório Fialho, Gisele Rodrigues da Silva, Armando Silva-Cunha, Min Zhao, Francine Behar-Cohen
BACKGROUND: Drug ocular toxicity is a field that requires attention. Clindamycin has been injected intravitreally to treat ocular toxoplasmosis, the most common cause of eye posterior segment infection worldwide. However, little is known about the toxicity of clindamycin to ocular tissues. We have previously showed non intraocular toxicity in rabbit eyes of poly(lactic-co-glycolic acid) (PLGA) implants containing clindamycin hydrochloride (CLH) using only clinical macroscotopic observation...
February 21, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28224020/ingenol-mebutate-topical-gel-a-status-report-on-clinical-use-beyond-actinic-keratosis
#5
James Q Del Rosso
Ingenol mebutate is available as a topical gel formulation approved for the treatment of actinic keratosis. Two different concentrations are available for treatment of actinic keratoses at specific anatomic sites with the advantages of short durations of therapy and limited "down time" related to visible inflammation as compared to other topical agents. Due to the various modes of action of ingenol mebutate, it has also been used for treatment of disease states other than actinic keratosis. This manuscript discusses the suggested modes of action of ingenol mebutate and reviews publications on the use of ingenol mebutate gel for cutaneous disorders other than actinic keratosis, including squamous cell carcinoma in-situ, basal cell carcinoma, actinic cheilitis, anogenital warts, and others...
November 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28223542/the-in-vitro-and-vivo-effects-of-nuclear-and-cytosolic-parafibromin-expression-on-the-aggressive-phenotypes-of-colorectal-cancer-cells-a-search-of-potential-gene-therapy-target
#6
Hua-Chuan Zheng, Jia-Jie Liu, Jing Li, Ji-Cheng Wu, Lei Yang, Gui-Feng Zhao, Xin Zhao, Hua-Mao Jiang, Ke-Qiang Huang, Zhi-Jie Li
Down-regulated parafibromin is positively linked to the pathogenesis of parathyroid, lung, breast, ovarian, gastric and colorectal cancers. Here, we found that wild-type (WT) parafibromin overexpression suppressed proliferation, tumor growth, induced cell cycle arrest and apoptosis in colorectal cancer cells (p<0.05), but it was the converse for mutant-type (MT, mutation in nucleus localization sequence) parafibromin (p<0.05). Both WT and MT transfectants inhibited migration and invasion, and caused better differentiation (p<0...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28223517/heart-failure-drug-changes-the-mechanoenzymology-of-the-cardiac-myosin-powerstroke
#7
John A Rohde, David D Thomas, Joseph M Muretta
Omecamtiv mecarbil (OM), a putative heart failure therapeutic, increases cardiac contractility. We hypothesize that it does this by changing the structural kinetics of the myosin powerstroke. We tested this directly by performing transient time-resolved FRET on a ventricular cardiac myosin biosensor. Our results demonstrate that OM stabilizes myosin's prepowerstroke structural state, supporting previous measurements showing that the drug shifts the equilibrium constant for myosin-catalyzed ATP hydrolysis toward the posthydrolysis biochemical state...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223253/development-and-characterization-of-mouse-monoclonal-antibodies-reactive-with-chicken-cxcli2
#8
Woo H Kim, Hyun S Lillehoj, Yeasul Lim, Wongi Min, Yvonne B Sullivan, Laura Kakach, Joanna W LaBresh
Interleukin-8(IL-8)/CXCL8 is a CXC-family chemokine attracts lymphocytes to sites of tissue damage and plays a role in the inflammatory response and wound healing. Chicken chemotactic and angiogenic factor was referred to as chCXCLi2 and has been studied as one of human CXCL8 homologue for more than 20 years. However, no monoclonal antibodies (mAbs) that specifically detect chCXCLi2 have been developed. Here, we developed and characterized mouse mAbs against chCXCLi2 to define its immunological properties. Two mouse mAbs against chCXCLi2 were generated and confirmed to display specific binding with not only recombinants, but endogenous chCXCLi2 by Western blot analysis, ELISA, and immunocytochemistry...
February 18, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28223172/a-simple-model-of-cardiac-muscle-for-multiscale-simulation-passive-mechanics-crossbridge-kinetics-and-calcium-regulation
#9
Fyodor A Syomin, Andrey K Tsaturyan
A simple model of cardiac muscle was designed for multiscale simulation of heart mechanics. Relaxed cardiac muscle was described as a transversally isotropic hyperelastic material. Active tension caused by actin-myosin crossbridges depends on the ensemble averaged strain of myosin heads bound to actin. Calcium activation was modeled by Ca(2+) binding to troponin-C. To account for the dependence of troponin affinity for Ca(2+) on myosin heads strongly bound to actin, the kinetics of troponin binding to Ca(2+) in the overlap zone of the thin and thick filaments and outside it were separated...
February 18, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28223136/wnt3%C3%AE-and-transforming-growth-factor-%C3%AE-induce-myofibroblast-differentiation-from-periodontal-ligament-cells-via-different-pathways
#10
Hui Xu, Yao He, Jian Q Feng, Rui Shu, Zhe Liu, Jingyu Li, Yating Wang, Yang Xu, Huan Zeng, Xin Xu, Zichao Xiang, Chaoran Xue, Ding Bai, Xianglong Han
Myofibroblasts are specialized cells that play a key role in connective tissue remodeling and reconstruction. Alpha-smooth muscle actin (α-SMA), vimentin and tenascin-C are myofibroblast phenotype, while α-SMA is the phenotypic marker. The observation that human periodontal ligament cells (hPDLCs) differentiate into myofibroblasts under orthodontic force has provided a new perspective for understanding of the biological and biomechanical mechanisms involved in orthodontic tooth movement. However, the cell-specific molecular mechanisms leading to myofibroblast differentiation in the periodontal ligament (PDL) remain unclear...
February 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28222401/combination-of-sitagliptin-and-silymarin-ameliorates-liver-fibrosis-induced-by-carbon-tetrachloride-in-rats
#11
Samia Salem Sokar, Magda El-Sayed El-Sayad, Mai El-Sayed Ghoneim, Abdelhadi Mohamed Shebl
Liver fibrosis is a common pathological condition that occurs in most conditions associated with chronic liver injury. Silymarin is a herbal product widely used for its hepatoprotective effect. Sitagliptin, a dipeptidyl peptidase-4 inhibitor (DPP4-I), is clinically used as an oral antidiabetic agent. This study was designed to investigate the effects of Sitagliptin, Silymarin, and their combination on established liver fibrosis in carbon tetrachloride (CCl4) rat model. Male albino rats received intraperitoneal injections of CCl4 three times a week for 7 weeks, as well as daily oral treatments of Sitagliptin (100mg/kg) or Silymarin (100mg/kg) or their combination during the 7 weeks of intoxication...
February 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28222225/daylight-photodynamic-therapy-vs-conventional-photodynamic-therapy-as-skin-cancer-preventive-treatment-in-patients-with-face-and-scalp-cancerization-an-intra-individual-comparison-study
#12
Elena Sotiriou, Demetrios Ioannides, Fotini Vrani, Elizabeth Lazaridou, Efstratios Vakirlis, Aimilios Lallas, Zoe Apalla
BACKGROUND: Individuals with medical history of non-melanoma skin cancers (NMSCs) usually develop multiple and/or recurrent malignant lesions around the site of the primary neoplasm. The latter represents the clinical expression of the "field cancerization" theory; supporting the presence of multiple malignant clones of dysplastic keratinocytes over the entire epithelium that potentially can progress into clinical lesions. Taking into consideration that the burden of NMSCs on public health and health-care cost is high, adequate control of recurrences and management of field change is challenging...
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28222102/anln-truncation-causes-a-familial-fatal-acute-respiratory-distress-syndrome-in-dalmatian-dogs
#13
Saila Holopainen, Marjo K Hytönen, Pernilla Syrjä, Meharji Arumilli, Anna-Kaisa Järvinen, Minna Rajamäki, Hannes Lohi
Acute respiratory distress syndrome (ARDS) is the leading cause of death in critical care medicine. The syndrome is typified by an exaggerated inflammatory response within the lungs. ARDS has been reported in many species, including dogs. We have previously reported a fatal familial juvenile respiratory disease accompanied by occasional unilateral renal aplasia and hydrocephalus, in Dalmatian dogs. The condition with a suggested recessive mode of inheritance resembles acute exacerbation of usual interstitial pneumonia in man...
February 21, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28221211/a-rare-case-of-ck20-ck7-double-negative-merkel-cell-carcinoma
#14
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/28220498/the-role-of-apical-cell-cell-junctions-and-associated-cytoskeleton-in-mechanotransduction
#15
REVIEW
Sophie Sluysmans, Ekaterina Vasileva, Domenica Spadaro, Jimit Shah, Florian Rouaud, Sandra Citi
Tissues of multicellular organisms are characterized by several types of specialized cell-cell junctions. In vertebrate epithelia and endothelia, tight and adherens junctions play critical roles in barrier and adhesion functions, and are connected to the actin and microtubule cytoskeletons. The interaction between junctions and the cytoskeleton is crucial for tissue development and physiology, and is involved in the molecular mechanisms governing cell shape, motility, growth and signaling. The machineries which functionally connect tight and adherens junctions to the cytoskeleton comprise proteins which either bind directly to cytoskeletal filaments, or function as adaptors for regulators of the assembly and function of the cytoskeleton...
February 21, 2017: Biology of the Cell
https://www.readbyqxmd.com/read/28220427/quantitative-evaluation-of-plant-actin-cytoskeletal-organization-during-immune-signaling
#16
Yi-Ju Lu, Brad Day
High spatial and temporal resolution microscopy-based methods are valuable tools for the precise real-time imaging of changes in cellular organization in response to stimulus perception. Here, we describe a quantitative method for the evaluation of the plant actin cytoskeleton during immune stimulus perception and the activation of defense signaling. As a measure of the biotic stress-induced changes in actin filament organization, we present methods for analyzing changes in actin filament organization following elicitation of pattern-triggered immunity and effector-triggered immunity...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28220374/lipopolysaccharide-activates-toll-like-receptor-4-and-prevents-cardiac-fibroblast-to-myofibroblast-differentiation
#17
Samir Bolívar, Roxana Santana, Pedro Ayala, Rodolfo Landaeta, Pía Boza, Claudio Humeres, Raúl Vivar, Claudia Muñoz, Viviana Pardo, Samuel Fernandez, Renatto Anfossi, Guillermo Diaz-Araya
Bacterial lipopolysaccharide (LPS) is a known ligand of Toll-like receptor 4 (TLR4) which is expressed in cardiac fibroblasts (CF). Differentiation of CF to cardiac myofibroblasts (CMF) is induced by transforming growth factor-β1 (TGF-β1), increasing alpha-smooth muscle actin (α-SMA) expression. In endothelial cells, an antagonist effect between LPS-induced signaling and canonical TGF-β1 signaling was described; however, it has not been studied whether in CF and CMF the expression of α-SMA induced by TGF-β1 is antagonized by LPS and the mechanism involved...
February 20, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/28220141/adhesive-peptide-sequences-regulate-valve-interstitial-cell-adhesion-phenotype-and-extracellular-matrix-deposition
#18
Yan Wu, K Jane Grande-Allen, Jennifer L West
Knowledge of how extracellular matrix (ECM) binding impacts valve interstitial cells (VICs) is critical not only to better understanding the etiology of valvular diseases but also to constructing living valve substitutes that can grow and remodel. Use of ECM-mimicking adhesive peptides with specific affinity to different receptors provides insights into adhesion-mediated cell signaling and downstream outcomes. Expression of adhesion receptors by VICs was assessed by flow cytometry and used to guide the choice of peptides studied...
December 2016: Cellular and Molecular Bioengineering
https://www.readbyqxmd.com/read/28219949/cdx2-is-essential-for-cell-proliferation-and-polarity-in-porcine-blastocysts
#19
Gerelchimeg Bou, Shichao Liu, Mingju Sun, Jiang Zhu, Binghua Xue, Jia Guo, Yueming Zhao, Bo Qu, Xiaogang Weng, Yanchang Wei, Lei Lei, Zhonghua Liu
The role of CDX2 in trophectoderm (TE) cells has been extensively studied, yet the results are contradictory and species specific. Here, CDX2 expression and function were explored in early porcine embryos. Notably, siRNA-mediated gene knockdown and lentivirus-mediated TE-specific gene regulation demonstrated that CDX2 is essential for the maintenance of blastocyst integrity by regulating the BMP4-mediated blastocyst niche and classical protein kinase C (PKC)-mediated TE polarity in mammalian embryos. Mechanistically, CDX2-depleted porcine embryos stalled at the blastocyst stage and exhibited apoptosis and inactive cell proliferation possibly resulting from BMP4 downregulation...
February 20, 2017: Development
https://www.readbyqxmd.com/read/28219946/distinct-intracellular-ca-2-dynamics-regulate-apical-constriction-and-differentially-contribute-to-neural-tube-closure
#20
Makoto Suzuki, Masanao Sato, Hiroshi Koyama, Yusuke Hara, Kentaro Hayashi, Naoko Yasue, Hiromi Imamura, Toshihiko Fujimori, Takeharu Nagai, Robert E Campbell, Naoto Ueno
Early in the development of the central nervous system, progenitor cells undergo a shape change, called apical constriction, that triggers the neural plate to form a tubular structure. How apical constriction in the neural plate is controlled, and contributes to tissue morphogenesis, are not fully understood. In this study, we show that intracellular calcium ions (Ca(2+)) are required for Xenopus neural tube formation, and that there are two types of Ca(2+)-concentration changes, a single-cell and a multicellular wave-like fluctuation, in the developing neural plate...
February 20, 2017: Development
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