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https://www.readbyqxmd.com/read/29160801/the-protective-effects-of-astaxanthin-on-the-ova-induced-asthma-mice-model
#1
Yun-Ho Hwang, Seong-Gyeol Hong, Seul-Ki Mun, Su-Jin Kim, Sung-Ju Lee, Jong-Jin Kim, Kyung-Yun Kang, Sung-Tae Yee
Although astaxanthin has a variety of biological activities such as anti-oxidant effects, inhibitory effects on skin deterioration and anti-inflammatory effects, its effect on asthma has not been studied. In this paper, the inhibitory effect of astaxanthin on airway inflammation in a mouse model of ovalbumin (OVA)-induced asthma was investigated. We evaluated the number of total cells, Th1/2 mediated inflammatory cytokines in bronchoalveolar lavage fluid (BALF) and airway hyperresponsiveness as well as histological structure...
November 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29160213/cutaneous-metastases-of-internal-malignancies-an-experience-from-a-single-institution
#2
Elena Guanziroli, Antonella Coggi, Luigia Venegoni, Daniele Fanoni, Giulia Ercoli, Francesca Boggio, Stefano Veraldi, Emilio Berti, Raffaele Gianotti, Stefano Ferrero, Alessandro Del Gobbo
BACKGROUND: Cutaneous metastases represent 2% of all skin tumours. Their recognition can be challenging, as they may present with different clinical features, with consequent frequent delay and failure in diagnosis. OBJECTIVES: To review our series of cutaneous metastatic lesions, analyse their frequency according to patient gender, histotype, localization of the primary tumour, and site of cutaneous metastasis, and correlate this data with clinicopathological parameters...
November 21, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/29160147/impact-of-complete-spinal-cord-injury-on-healing-of-skin-ulcers-in-mouse-models
#3
Suneel Kumar, Martin L Yarmush, Biraja C Dash, Henry C Hsia, Francois Berthiaume
Pressure ulcers (PUs) are common debilitating complications of traumatic spinal cord injury (SCI) and tend to occur in soft tissues around bony prominences. There is, however, little known about the impact of SCI on skin wound healing due to the lack of suitable animal models for studies in controlled experimental settings. Herein we describe a reproducible and clinically relevant mouse model of PUs in the context of complete SCI. Adult male mice (BALB/c) were subjected to thoracic (T9-T10) complete SCI. Immediately after, a skin fold on the back of the mice was lifted and sandwiched between two magnetic discs held in place for 12 hours, thus creating an ischemic area that developed into a PU over the following days...
November 21, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29158163/identification-of-tissue-damage-extracellular-matrix-remodeling-and-bacterial-challenge-as-common-mechanisms-associated-with-high-risk-cutaneous-squamous-cell-carcinomas
#4
Melanie C Föll, Matthias Fahrner, Christine Gretzmeier, Käthe Thoma, Martin L Biniossek, Dimitra Kiritsi, Frank Meiss, Oliver Schilling, Alexander Nyström, Johannes S Kern
In this study we used a genetic extracellular matrix (ECM) disease to identify mechanisms associated with aggressive behavior of cutaneous squamous cell carcinoma (cSCC). cSCC is one of the most common malignancies and usually has a good prognosis. However, some cSCCs recur or metastasize and cause significant morbidity and mortality. Known factors that are associated with aggressiveness of cSCCs include tumor grading, size, localization and microinvasive behavior. To investigate molecular mechanisms that influence biologic behavior we used global proteomic and histologic analyses of formalin-fixed paraffin-embedded tissue of primary human cSCCs...
November 17, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29157599/skin-lesions-of-birt-hogg-dub%C3%A3-syndrome-clinical-and-histopathological-findings-in-31-japanese-patients-who-presented-with-pneumothorax-and-or-multiple-lung-cysts
#5
Chikako Iwabuchi, Hiroki Ebana, Akira Ishiko, Azusa Negishi, Teruaki Mizobuchi, Toshio Kumasaka, Masatoshi Kurihara, Kuniaki Seyama
BACKGROUND: Birt-Hogg-Dubé syndrome (BHDS) (OMIM #135150) is an autosomal dominant disease, characterized by fibrofolliculomas (FFs) of the skin, pulmonary cysts with/without pneumothorax, and renal tumors. The prevalence of skin manifestations reported for Japanese BHDS patients is lower (<30%) compared with that of Western countries (75∼90%), which appear to be underestimated. OBJECTIVE: To precisely examine the prevalence of skin lesions with dermoscopy and histopathology with reference to genetic analyses...
November 2, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29155150/enhancement-of-cutaneous-immunity-during-ageing-by-blocking-p38-mapkinase-induced-inflammation
#6
Milica Vukmanovic-Stejic, Emma S Chambers, Mayte Suarez- Farinas, Daisy Sandhu, Judilyn Fuentes-Duculan, Neil Patel, Elaine Agius, Katie E Lacy, Carolin T Turner, Anis Larbi, Veronique Birault, Mahdad Noursadeghi, Neil A Mabbott, Malcolm H A Rustin, James Krueger, Arne N Akbar
BACKGROUND: Immunity declines with age that leads to re-activation of varicella zoster virus (VZV). In humans, age associated immune changes are usually measured in blood leukocytes however this may not reflect alterations in tissue-specific immunity. OBJECTIVES: We used a VZV antigen challenge system in the skin to investigate changes in tissue specific mechanisms involved in the decreased response to this virus during ageing. METHODS: We assessed cutaneous immunity by the extent of erythema and induration after intradermal VZV antigen injection...
November 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29154084/penetration-of-gold-nanoparticles-across-the-stratum-corneum-layer-of-thick-skin
#7
Gayathri Raju, Neeraj Katiyar, Sajini Vadukumpully, Sahadev A Shankarappa
BACKGROUND: Transdermal particulate penetration across thick-skin, such as that of palms and sole, is particularly important for drug delivery for disorders such as small fiber neuropathies. Nanoparticle-based drug delivery across skin is believed to have much translational applications, but their penetration especially through thick-skin, is not clear. OBJECTIVE: This study specifically investigates the effectiveness of gold nanoparticles (AuNPs) for thick-skin penetration, especially across the stratum corneum (SC) as a function of particle size...
November 9, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29153064/-comparison-of-polymerase-chain-reaction-using-kinetoplast-dna-specific-primers-and-other-parasitological-methods-in-the-diagnosis-of-clinical-samples-of-suspected-patients-with-cutaneous-leishmaniasis-in-%C3%A5-anl%C3%A4-urfa
#8
Fadile Yıldız Zeyrek, Seray Töz, Fehmi Yüksel, Nevin Turgay, Yusuf Özbel
Visceral leishmaniasis (VL) and cutaneous leishmaniasis (CL) are seen endemically in Turkey and CL caused by Leishmania tropica is an important public health problem in southeastern as well as other regions of Turkey. The diagnosis has been usually made by clinical view of lesion and/or parasitologically using lesion aspiration smears. Histological examination does not, always reveal the parasite in the skin biopsy, particularly in chronic lesions. Besides this, due to CL infections caused by different species in endemic areas, diagnostic methods enabling species identification are in great need...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29152798/atomic-force-microscopy-for-biomechanical-and-structural-analysis-of-human-dermis-a-complementary-tool-for-medical-diagnosis-and-therapy-monitoring
#9
Leonardo Peñuela, Carola Negro, Michela Massa, Erica Repaci, Emanuele Cozzani, Aurora Parodi, Silvia Scaglione, Rodolfo Quarto, Roberto Raiteri
Skin mechanical properties are usually measured considering the entire skin thickness and very little is known about the mechanical behavior of individual skin layers. We propose atomic force microscopy (AFM) as a tool to quantify nanoscale changes in the biomechanical properties and ultrastructure of human papillary dermis exposed to different mechanical and physical stimuli. Samples from three human skin biopsies were studied: one stretched by obesity, one subjected to a high level of sun-exposure, and normal skin as control...
November 20, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/29152226/an-overview-of-the-cutaneous-porphyrias
#10
REVIEW
Robert Dawe
This is an overview of the cutaneous porphyrias. It is a narrative review based on the published literature and my personal experience; it is not based on a formal systematic search of the literature. The cutaneous porphyrias are a diverse group of conditions due to inherited or acquired enzyme defects in the porphyrin-haem biosynthetic pathway. All the cutaneous porphyrias can have (either as a consequence of the porphyria or as part of the cause of the porphyria) involvement of other organs as well as the skin...
2017: F1000Research
https://www.readbyqxmd.com/read/29150847/chronic-sun-exposure-is-associated-with-distinct-histone-acetylation-changes-in-human-skin
#11
S Ding, J Chen, Q Zeng, J Lu, L Tan, A Guo, J Kang, S Yang, Y Xiang, C Zuo, J Huang
BACKGROUND: Photoaging is attributed to continuous sunlight or artificial UV exposure and manifests the clinical and histological changes of skin. Epigenetic changes have been found to be involved in the pathogenesis of photoaging. However, the underlying mechanisms are unclear. OBJECTIVES: To analyse histone modification patterns in sun-exposed and non-exposed skins, and identify the abnormally histone modified-genes related to photoaging. METHODS: Skin biopsies were collected both from the outer forearm (sun-exposed area) and the buttock (sun-protected area) in 20 healthy middle-aged female volunteers...
November 18, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29149474/interventions-for-old-world-cutaneous-leishmaniasis
#12
REVIEW
Julio Heras-Mosteiro, Begoña Monge-Maillo, Mariona Pinart, Patricia Lopez Pereira, Emely Garcia-Carrasco, Pedro Campuzano Cuadrado, Ana Royuela, Irene Mendez Roman, Rogelio López-Vélez
BACKGROUND: Cutaneous leishmaniasis, caused by a parasitic infection, is considered one of the most serious skin diseases in many low- and middle-income countries. Old World cutaneous leishmaniasis (OWCL) is caused by species found in Africa, Asia, the Middle East, the Mediterranean, and India. The most commonly prescribed treatments are antimonials, but other drugs have been used with varying success. As OWCL tends to heal spontaneously, it is necessary to justify the use of systemic and topical treatments...
November 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29148536/characterization-of-foreign-materials-in-paraffin-embedded-pathological-specimens-using-in-situ-multi-elemental-imaging-with-laser-spectroscopy
#13
Benoit Busser, Samuel Moncayo, Florian Trichard, Vincent Bonneterre, Nicole Pinel, Frédéric Pelascini, Philippe Dugourd, Jean-Luc Coll, Michel D'Incan, Julie Charles, Vincent Motto-Ros, Lucie Sancey
Pathologists typically encounter many disparate exogenous materials in clinical specimens during their routine histopathological examinations, especially within the skin, lymph nodes, and lungs. These foreign substances may be free extracellular deposits or induce several clinical abnormalities or histopathological patterns. However, pathologists almost never investigate or report the chemical nature of exogenous metals in clinical specimens due to a lack of convenient and available technologies. In this paper, a novel strategy based on laser-induced breakdown spectroscopy (LIBS) technology is evaluated for in situ multi-elemental tissue imaging...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29146147/age-induced-and-photoinduced-changes-in-gene-expression-profiles-in-facial-skin-of-caucasian-females-across-6%C3%A2-decades-of-age
#14
Alexa B Kimball, Maria B Alora-Palli, Makio Tamura, Lisa A Mullins, Chieko Soh, Robert L Binder, Neil A Houston, Emily D Conley, Joyce Y Tung, Nikki E Annunziata, Charles C Bascom, Robert J Isfort, Bradley B Jarrold, Raghu Kainkaryam, Heather L Rocchetta, Dionne D Swift, Jay P Tiesman, Kazumi Toyama, Jun Xu, Xianghong Yan, Rosemarie Osborne
BACKGROUND: Intrinsic and extrinsic factors, including ultraviolet irradiation, lead to visible signs of skin aging. OBJECTIVE: We evaluated molecular changes occurring in photoexposed and photoprotected skin of white women 20 to 74 years of age, some of whom appeared substantially younger than their chronologic age. METHODS: Histologic and transcriptomics profiling were conducted on skin biopsy samples of photoexposed (face and dorsal forearm) or photoprotected (buttocks) body sites from 158 women...
November 14, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29146059/oral-lymphomatoid-papulosis-type-c-a-diagnostic-pitfall-often-confused-with-t-cell-lymphoma
#15
Ziv Schwartz, Morton Coleman, Jennifer P Toyohara, Paul D Freedman, Cynthia M Magro
Eosinophilic ulcer of the oral mucosa (EUOM) is a rare, benign, self-resolving lymphoproliferative disorder, which typically presents with asymptomatic to mildly tender ulcers. Histological findings of EUOM are characterized by a polymorphic infiltrate with many eosinophils often extending into the underlying muscle. Although this entity is well documented within the dental literature, it is not well known to physicians. The pathogenesis of the condition is unclear, although reports dating back to 1997 suggest that at least a subset of EUOM represents CD30 positive lymphoproliferative disorder (CD30+ LPD)...
December 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29144099/primary-cutaneous-b-cell-lymphoma-narrative-review-of-the-literature
#16
Vieri Grandi, Silvia Alberti Violetti, Roberta LA Selva, Stefano Cicchelli, Chiara Delfino, Paolo Fava, Maria T Fierro, Alessandro Pileri, Nicola Pimpinelli, Pietro Quaglino, Emilio Berti
Primary Cutaneous B-cell Lymphomas comprehend a group of lymphoproliferative disorders characterized by being monoclonal proliferations of B-cell primarily involving the skin. Despite being recognized as autonomous and distinct clinico-pathologic entities since the late 80s, their classification is still an ongoing matter of debate. At the moment, WHO classification recognizes three disorders: primary cutaneous marginal zone lymphoma, primary cutaneous follicle center lymphoma and primary cutaneous diffuse large B-cell lymphoma, leg type...
November 16, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/29143961/upregulation-of-epidermal-gap-junctional-proteins-in-patients-with-venous-disease
#17
M Kanapathy, R Simpson, L Madden, C Thrasivoulou, A Mosahebi, D L Becker, T Richards
BACKGROUND: Leg ulceration is a feared complication of venous insufficiency. It is not known whether varicose veins predispose skin to poor wound healing. The expression pattern of gap junctional protein connexin, a known marker of poor wound healing, was investigated across various stages of venous disease. METHODS: Patients undergoing intervention for varicose veins were assessed according to the Clinical Etiologic Anatomic Pathophysiologic (CEAP) classification of varicose veins...
November 16, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/29143381/comparing-dermoscopy-and-histological-examination-of-normal-equine-skin
#18
Lara M Tomich, Jason B Pieper, Adam W Stern
BACKGROUND: Dermoscopy is a noninvasive diagnostic technique that allows visualization of structures of the superficial dermis not visible with the naked eye. HYPOTHESIS/OBJECTIVES: To assess the usefulness and applicability of dermoscopy for evaluation of healthy equine skin. ANIMALS: Twelve healthy horses from a research herd. METHODS: Five regions (cheek, lateral neck, dorsum, flank and abdomen) were examined with contact dermoscopy using both nonpolarized and polarized light at both 17-fold and 24-fold magnification...
November 15, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/29142854/skin-metastasis-on-the-neck-an-unusual-presentation-of-recurrence-of-papillary-thyroid-carcinoma
#19
Selen Soylu, Akif Enes Arikan, Serkan Teksoz, Murat Ozcan, Yusuf Bukey
Skin metastasis of papillary thyroid carcinoma (PTC) is rare. Here, two cases of skin metastases of PTC are presented. Both of the patients were females, one is 83 and the other is 65 years old. The patients were admitted to the hospital with a movable skin lesion on anterior neck region. Free T3 and T4 levels were in normal levels and TSH levels were low in both patients. The 83-year-old patient underwent total thyroidectomy due to papillary thyroid cancer and received (131)I ablation therapy and then thyroid suppression therapy...
October 2017: Gland Surgery
https://www.readbyqxmd.com/read/29141833/comparative-study-of-the-clinical-histological-and-biological-characteristics-of-squamous-cell-carcinomas-in-areas-previously-treated-with-photodynamic-therapy
#20
Tamara Gracia Cazaña, Nerea Salazar, Jesús Vera-Álvarez, Salvador González, Angeles Juarranz, Yolanda Gilaberte
Although photodynamic therapy (PDT) is an effective treatment option for non-melanoma skin cancer, the development of aggressive tumours in PDT-treated areas has been described. To evaluate the clinical, histological, and biological characteristics of squamous cell carcinomas (SCCs) in areas previously treated with PDT vs those arising in areas never treated with this therapeutic modality. A retrospective observational study was designed. We collected all cases of invasive SCCs in areas previously treated with PDT...
November 15, 2017: European Journal of Dermatology: EJD
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