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https://www.readbyqxmd.com/read/28340212/accelerated-senescence-in-skin-in-a-murine-model-of-radiation-induced-multi-organ-injury
#1
Elizabeth A McCart, Rajesh L Thangapazham, Eric D Lombardini, Steven R Mog, Ronald Allan M Panganiban, Kelley M Dickson, Rihab A Mansur, Vitaly Nagy, Sung-Yop Kim, Reed Selwyn, Michael R Landauer, Thomas N Darling, Regina M Day
Accidental high-dose radiation exposures can lead to multi-organ injuries, including radiation dermatitis. The types of cellular damage leading to radiation dermatitis are not completely understood. To identify the cellular mechanisms that underlie radiation-induced skin injury in vivo, we evaluated the time-course of cellular effects of radiation (14, 16 or 17 Gy X-rays; 0.5 Gy/min) in the skin of C57BL/6 mice. Irradiation of 14 Gy induced mild inflammation, observed histologically, but no visible hair loss or erythema...
March 18, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28331735/metaplastic-breast-carcinoma-analysis-of-clinical-and-pathologic-characteristics-a-case-series
#2
Semra Salimoğlu, İsmail Sert, Mustafa Emiroğlu, Cem Karaali, Dilek Kuzukıran, Yasemin Akyüz Kırmızı, Gülden Diniz, Cengiz Aydın
OBJECTIVE: Metaplastic breast cancer (MBC) is a rare type of breast cancer that is considered to be clinically aggressive. The clinical significance and prognostic risk factors of MBC are limited. This study comprises a retrospective analysis of the clinical and pathologic findings of a series of patients treated for MBC. MATERIALS AND METHODS: The files of 657 patients who underwent surgery because of breast cancer at our clinic were examined and the data found on 11 patients who were diagnosed as having MBC were analyzed...
April 2016: J Breast Health (2013)
https://www.readbyqxmd.com/read/28329529/concurrent-pyogenic-granuloma-and-bullous-impetigo-of-a-pregnant-woman-s-finger
#3
Rosie Qin, Philip R Cohen
BACKGROUND: Bullous impetigo is a superficial skininfection caused by Staphylococcus aureus (S.aureus). Pyogenic granuloma is a common benigntumor frequently associated with prior trauma.Bullous impetigo and pyogenic granuloma may occurin pregnant women. PURPOSE: The features of a pregnant womanwith pyogenic granuloma and bullous impetigoconcurrently present in a lesion on her finger aredescribed. METHODS: PubMed was used to search the followingterms: bullous impetigo, pregnancy, and pyogenicgranuloma...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329497/unique-clinical-presentations-of-pityriasis-rosea-aphthous-ulcers-vesicles-and-inverse-distribution-of-lesions
#4
Naeha Gupta, Jacob O Levitt
Pityriasis Rosea (PR) is a common skin disorderencountered in daily practice. Although its etiologyhas not been established, there has been widespreadresearch into possibilities. The lack of its characteristicmanifestations, specifically the herald patch andtruncal involvement, can lead to pitfalls in diagnosis.Whereas other conditions in the differential diagnosisshould be considered, PR can at times also manifest inan atypical manner. We wish to illustrate three casesof PR including those that presented with aphthousulcers, vesicles, and an inverse pattern...
February 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329471/first-report-of-mesalamine-5-aminosalicylic-acid-as-the-causative-agent-in-a-case-of-acute-generalized-exanthamous-pustulosis
#5
Erin Rocci, Kelly Park, Kelli Hutchens, Laura Winterfield
Acute generalized exanthamous pustulosis (AGEP)is a rare eruption of non-follicular sterile pustuleson a diffuse background of erythema and edema,commonly associated with fever and leukocytosis.Antibiotics are implicated in most cases; however,other drugs have been reported to cause AGEP. Wereport a case of a 73-year-old man with a historyof ulcerative colitis who presented with a diffusepustular rash, renal failure, elevated liver functiontests, and leukocytosis with neutrophilia. A week priorto admission, the patient was started on mesalamineto treat colitis...
January 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329001/experimental-demonstration-of-the-possible-role-of-acanthamoeba-polyphaga-in-the-infection-and-disease-progression-in-buruli-ulcer-bu-using-icr-mice
#6
Bright K Azumah, Phyllis G Addo, Alfred Dodoo, Gordon Awandare, Lydia Mosi, Daniel A Boakye, Michael D Wilson
The transmission of Buruli ulcer (BU), caused by Mycobacterium ulcerans (MU), remains puzzling although a number of hypothesis including through bites of infected aquatic insects have been proposed. We report the results of experiments using ICR mice that give credence to our hypothesis that Acanthamoeba species may play a role in BU transmission. We cocultured MU N2 and MU 1615 which expresses red fluorescent protein (RFP) and Acanthamoeba polyphaga (AP), and confirmed infected AP by Ziehl-Neelsen (ZN) staining...
2017: PloS One
https://www.readbyqxmd.com/read/28328827/clinical-study-on-single-organ-cutaneous-small-vessels-vasculitis-socsvv
#7
Maciej Pastuszczak, Magdalena Celińska-Löwenhoff, Joanna Sułowicz, Anna Wojas-Pelc, Jacek Musiał
Leukocytoclastic vasculitis (LCV) is a heterogenous group of disorders that may manifest as a mild disease isolated to the skin or be a part of life-threatening systemic vasculitis. According to the 2012 Chapel Hill Consensus Conference nomenclature, patients presenting symptoms of LCV confined only to the skin should be defined as suffering from a single-organ cutaneous small vessel vasculitis (SoCSVV). SoCSVV is a benign disease with a good clinical outcome but with a significant risk of relapse and skin ulcer formation...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28328817/retrospective-analysis-of-the-overt-proteinuria-diabetic-kidney-disease-in-the-treatment-of-modified-shenzhuo-formula-for-2-years
#8
Hongdong Chen, Jing Guo, Xuemin Zhao, Xinhui He, Zhongchen He, Linhua Zhao, Xiaolin Tong
The objective of the present study was to evaluate the 2-year effectiveness of modified Shenzhuo formula in the treatment of overt proteinuria diabetic kidney disease (DKD).Patients diagnosed with type 2 DKD in the clinical research database of Prof Xiaolin Tong (>20,000 data points) with >1-year follow-up were screened for this study. Patients' demographic data, chief complaint, present illness, past history, allergic history, personal history, family history, test results, tongue images, pulse information, and prescription information at 1, 1...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28326562/liposome-encapsulated-hemoglobin-accelerates-skin-wound-healing-in-diabetic-db-db-mice
#9
Tsuyoshi Fukui, Akira T Kawaguchi, Susumu Takekoshi, Muneo Miyasaka, Hideaki Sumiyoshi, Rica Tanaka
Since liposome-encapsulated hemoglobin with high O2 affinity (h-LEH, P50 O2  = 10 mm Hg) has been reported to accelerate skin wound healing in normal mice, it was tested in dB/dB mice with retarded wound healing, as seen in human diabetics. Two full-thickness dorsal wounds 6 mm in diameter encompassed by silicone stents were created in dB/dB mice. Two days later (day 2), the animals were randomly assigned to receive intravenous h-LEH (2 mL/kg, n = 7) or saline (2 mL/kg, n = 7). The same treatment was repeated 4 days after wounding (day 4), and the size of the skin lesions was analyzed by photography, surface perfusion was detected by Laser-Doppler imager, and plasma cytokines and chemokines were determined on days 0, 2, 4, and 7, when all animals were euthanized for morphological studies...
March 21, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28320482/pressure-relieving-support-surfaces-a-randomised-evaluation-2-pressure-2-photographic-validation-sub-study-study-protocol-for-a-randomised-controlled-trial
#10
Elizabeth McGinnis, Sarah Brown, Howard Collier, Phil Faulks, Rachael Gilberts, Clare Greenwood, Valerie Henderson, Delia Muir, Andrea Nelson, Jane Nixon, Isabelle Smith, Nikki Stubbs, Kay Walker, Lyn Wilson, Susanne Coleman
BACKGROUND: PRESSURE 2 is a randomised evaluation of the clinical and cost effectiveness of two types of pressure relieving mattress for the prevention of pressure ulcers. The primary endpoint is the time to development of a Category ≥2 pressure ulcer. The current 'gold standard' for the identification of a Category ≥2 pressure ulcer is expert clinical assessment. Due to the appearance of the bed, it is not possible to achieve blinding of the endpoint. This therefore poses a risk to the internal validity of the study...
March 20, 2017: Trials
https://www.readbyqxmd.com/read/28314562/intermittent-vibration-protects-aged-muscle-from-mechanical-and-oxidative-damage-under-prolonged-compression
#11
Sing Wan Wong, Brian Chun Ho Cheung, Bruce Tak Keung Pang, Ateline Kwong, Anna Chung, Kenneth Ka Ho Lee, Arthur Fut Tak Mak
Deep tissue pressure ulcers, a serious clinical challenge originating in the muscle layer, are hardly detectable at the beginning. The challenge apparently occurs in aged subjects more frequently. As the ulcer propagates to the skin surface, it becomes very difficult to manage and can lead to fatal complications. Preventive measures are thus highly desirable. Although the complex pathological mechanisms have not been fully understood, prolonged and excessive physical challenges and oxidative stress are believed to be involved in the ulcer development...
February 27, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28304107/the-percutaneous-toxicokinetics-of-sulphur-mustard-in-a-damaged-skin-porcine-model-and-the-evaluation-of-woundstat%C3%A2-as-a-topical-decontaminant
#12
Charlotte A Hall, Helen L Lydon, Christopher H Dalton, J Kevin Chipman, John S Graham, Robert P Chilcott
This study used a damaged skin, porcine model to evaluate the in vivo efficacy of WoundStat™ for decontamination of superficial (non-haemorrhaging), sulphur mustard-contaminated wounds. The dorsal skin of 12 female pigs was subjected to controlled physical damage and exposed to 10 μL (14) C-radiolabelled sulphur mustard ((14) C-SM). Animals were randomly assigned to either a control or a treatment group. In the latter, WoundStat™ was applied 30 s post exposure and left in situ for 1 h. Skin lesion progression and decontaminant efficacy were quantified over 6 h using a range of biophysical measurements...
March 17, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28301358/hyperbaric-oxygen-therapy-exploring-the-clinical-evidence
#13
Gretl Lam, Rocky Fontaine, Frank L Ross, Ernest S Chiu
GENERAL PURPOSE: To provide information about hyperbaric oxygen therapy (HBOT), its mechanisms, indications and safe applications based on clinical evidence. TARGET AUDIENCE: This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES: After participating in this educational activity, the participant should be better able to:1...
April 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28301356/local-heating-test-for-detection-of-microcirculation-abnormalities-in-patients-with-diabetes-related-foot-complications
#14
Aleksey Parshakov, Nadezhda Zubareva, Sergey Podtaev, Peter Frick
OBJECTIVE: In this study, authors used a wavelet analysis of skin temperature (WAST) to assess the mechanisms of microvascular tone regulation during the local heating test in patients with diabetic foot syndrome (DFS). PARTICIPANTS: The participants included control subjects and 36 hospitalized patients with DFS between 52 and 79 years old (68 ± 8 years old). They were distributed among 5 groups: 15 control subjects, 8 patients with DFS who did not develop ulcerative or necrotic disorders, 10 patients who developed the neuroischemic form of DFS complicated by foot ulceration, 12 patients with DFS complicated by toe necrosis, and 6 patients with DFS and foot gangrene...
April 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28300579/ingestion-of-the-pods-of-enterolobium-contortisiliquum-causes-hepatogenous-photosensitization-in-cattle
#15
Paula V Leal, Rayane C Pupin, Stephanie C Lima, Gleice Kelli A Melo, Marcelo A Araújo, Danilo C Gomes, Claudio S L Barros, Ricardo A A Lemos
Enterolobium contortisiliquum (Leg. Mimosoidae) is reported as a poisonous plant related to photosensitization and photodermatitis, digestive disturbs and abortion. To date, the clinical and pathological features of photosensitization has not been reproduced or only reproduced associated with very mild presentations. The objective of this study was to reproduce in cattle the clinicopathological features of photosensitization associated with the ingestion of the pods of E. contortisiliquum. The pods were harvested from a property with a history of an ongoing outbreak of photosensitization and abortion in cattle...
March 12, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28296736/dermoscopic-features-of-livedoid-vasculopathy
#16
Stephen Chu-Sung Hu, Gwo-Shing Chen, Chi-Ling Lin, Yang-Chun Cheng, Yung-Song Lin
Livedoid vasculopathy (atrophie blanche) is a form of thrombotic vasculopathy. It is characterized by small ulcers that become crusted, and heal after several months to produce white atrophic scars. The most commonly affected sites are the lower legs, in particular the dorsum of the feet and ankles. To date, the dermoscopic features of livedoid vasculopathy have not been clearly described in the literature. In this observational study, we sought to evaluate the dermoscopic patterns of livedoid vasculopathy and determine whether the dermoscopic features are associated with certain histopathological characteristics...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28296711/prognostic-role-of-the-histological-subtype-of-melanoma-on-the-hands-and-feet-in-caucasians
#17
Cristina Carrera, Adrià Gual, Alba Díaz, Joan A Puig-Butillé, Susanna Noguès, Antonio Vilalta, Carlos Conill, Ramón Rull, Ramon Vilana, Pedro Arguis, Sergi Vidal-Sicart, Llucia Alós, Josep Palou, Teresa Castel, Josep Malvehy, Susana Puig
Acral melanoma (AM) is associated with a poor prognosis in part because of delayed diagnosis, but probably also because of other intrinsic characteristics of location. The aim of this study was to review the specific characteristics and outcome of AM in Caucasians. This was a cross-sectional retrospective clinical-pathological study of 274 patients identified with AM in the database of a referral unit in Europe from 1986 to 2010. The mean age of the patients was 56.6 (SD 17.7) years. 269 cases could be histologically classified and included in the study...
March 14, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28294596/the-macrolide-toxin-mycolactone-promotes-bim-dependent-apoptosis-in-buruli-ulcer-through-inhibition-of-mtor
#18
Raphael Bieri, Nicole Scherr, Thérèse Ruf, Jean-Pierre Dangy, Philipp Gersbach, Matthias Gehringer, Karl-Heinz Altmann, Gerd Pluschke
Mycolactone, the macrolide exotoxin produced by Mycobacterium ulcerans, is central to the pathogenesis of the chronic necrotizing skin disease Buruli ulcer (BU). Here we show that mycolactone acts as an inhibitor of the mechanistic Target of Rapamycin (mTOR) signaling pathway by interfering with the assembly of the two distinct mTOR protein complexes mTORC1 and mTORC2, which regulate different cellular processes. Inhibition of the assembly of the rictor containing mTORC2 complex by mycolactone prevents phosphorylation of the serine/threonine protein kinase Akt...
March 15, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28291582/sequential-nailfold-videocapillaroscopy-examinations-have-responsiveness-to-detect-organ-progression-in-systemic-sclerosis
#19
Jérôme Avouac, Gemma Lepri, Vanessa Smith, Elide Toniolo, Charlotte Hurabielle, Anaïs Vallet, Fazia Amrouche, André Kahan, Maurizio Cutolo, Yannick Allanore
OBJECTIVE: To determine the merit of nailfold videocapillaroscopy (NVC) to detect meaningful microvascular changes over time in patients with systemic sclerosis (SSc) and whether these changes are associated with overall disease progression and organ involvements. METHODS: A prospective cohort of 140 SSc patients was recruited over a 12-month period and was followed up on an annual basis for 3 years. Detailed NVC analysis was performed at inclusion and repeated annually...
February 10, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28288670/histological-and-parasitological-distinctive-findings-in-clinically-lesioned-and-normal-looking-skin-of-dogs-with-different-clinical-stages-of-leishmaniosis
#20
Laura Ordeix, Annabel Dalmau, Montsant Osso, Joan Llull, Sara Montserrat-Sangrà, Laia Solano-Gallego
BACKGROUND: Normal-looking skin of dogs with leishmaniosis frequently shows microscopic lesions along with the presence of Leishmania amastigotes. However, histological lesions with or without detection of amastigotes might not occur in less severe clinical cases. In addition, comparative studies between paired clinically-lesioned and normal-looking skin samples from dogs with different disease severity are lacking. The objective of this study was to compare histological and parasitological findings by Leishmania immunohistochemistry (IHC) and quantitative PCR (qPCR) on paired clinically-lesioned and normal-looking skin biopsies from 25 dogs with different clinical stages of leishmaniosis, 11 with stage I-mild disease (papular dermatitis) and 14 with stage II-III (ulcerative or exfoliative dermatitis)...
March 13, 2017: Parasites & Vectors
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