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Miguel R Lugo, Bronwyn Lyons, Cristina Lento, Derek J Wilson, A Rod Merrill
Scabin is a mono-ADP-ribosyltransferase enzyme and is a putative virulence factor produced by the plant pathogen, Streptomyces scabies. Previously, crystal structures of Scabin were solved in the presence and absence of substrate analogues and inhibitors. Herein, experimental (hydrogen-deuterium exchange), simulated (molecular dynamics), and theoretical (Gaussian Network Modeling) approaches were systematically applied to study the dynamics of apo-Scabin in the context of a Scabin·NAD+·DNA model. MD simulations revealed that the apo-Scabin solution conformation correlates well with the X-ray crystal structure, beyond the conformation of the exposed, mobile regions...
2018: PloS One
Alexander Grahofer, Jeanette Bannoehr, Heiko Nathues, Petra Roosje
BACKGROUND: Scabies is a contagious skin disease rarely described in miniature pigs. To the best of the authors' knowledge, a zoonotic transfer from infected pet pigs to humans has not been reported previously. CASE PRESENTATION: This case report describes the infestation with Sarcoptes scabiei mites in two miniature pigs presenting with unusual clinical signs, and disease transmission to a child. Two 7-month-old male castrated miniature pig siblings were examined...
March 13, 2018: BMC Veterinary Research
Katherine M Stiff, Philip R Cohen
Scabies, a mite infestation caused by 'Sarcoptes scabiei', most commonly presents as pruritic linear burrows where the mite has invaded the skin. Scabies variant such as bullous, crusted, hidden, incognito, nodular and scalp-mimic the other conditions. In addition, atypical presentations of scabies can masquerade as dermatitis herpetiformis, ecchymosis, Langerhans cell histiocytosis, systemic lupus erythematosus, urticaria, and urticaria pigmentosa. A 59-year-old male presented with non-pruritic papulosquamous plaques on his chest, abdomen, and back resembling lesions of pityriasis rosea in morphology and distribution...
December 19, 2017: Curēus
Sabrina Dahlizar, Mika Futaki, Akie Okada, Wesam Radhi Kadhum, Hiroaki Todo, Kenji Sugibayashi
Palmitoyl-glycine-histidine (Pal-GH) is a new low molecular weight gelling agent. It exhibits thixotropic behavior, low viscosity, and high dissolving properties for a wide range of hydrophilic to lipophilic drugs. Orally administered ivermectin (IVM) is used to treat scabies. However, this treatment is associated with well-known side effects, thus a study is awaited to search for alternative routes of administration. Although a topical formulation of IVM could be a candidate, it requires whole body application except the head and face for several hours on a daily basis...
2018: Chemical & Pharmaceutical Bulletin
Josef A I Weigl
BACKGROUND: At Pentecost 2017 outbreaks of scabies occurred in three schools in Ploen County. Several classes were supposed to go on an excursion or had returned from an excursion with symptomatic kids. METHODS: Rapid investigation, on site outbreak confirmation, home visits of the environment of the index cases, simultaneous mass treatment and post exposure prophylaxis (PEP) with Ivermectin according to the outbreak characteristics were applied. RESULTS: The index case of school A was ill since 5 months, but was misdiagnosed as eczema...
February 19, 2018: Das Gesundheitswesen
Pierre H Boyer, Stéphanie Deboscker, Céline Hernandez, Morgane Ramsheyi, Pauline Schneider, Jacinthe Foeglé, Thierry Lavigne
No abstract text is available yet for this article.
February 19, 2018: Infection Control and Hospital Epidemiology
Simon Thornley, Roger Marshall, Paul Jarrett, Gerhard Sundborn, Edwin Reynolds, Grant Schofield
AIM: This study sought to determine whether scabies infection is associated with acute rheumatic fever (ARF) or chronic rheumatic heart disease (CRHD). METHODS: A cohort study was undertaken using health records of children aged 3-12 years attending an oral health service for the first time. Subjects were then linked to hospital diagnoses of scabies and ARF or CRHD. RESULTS: A total of 213 957 children free of rheumatic heart disease at baseline were available for analysis...
February 14, 2018: Journal of Paediatrics and Child Health
Manfredo Marotta, Francesco Toni, Laura Dallolio, Greta Toni, Erica Leoni
BACKGROUND: In developed countries, scabies is observed sporadically or as institutional outbreaks in hospitals and other health facilities. In the family context, outbreaks generally involve a limited number of cases. METHODS: A local health authority in Emilia-Romagna (Northern Italy) carried out an epidemiologic investigation on a family outbreak of scabies that included an unusually high number of cases. Its possible connection with a nosocomial case in a long-term care facility (LTCF) and outbreak management are discussed...
January 31, 2018: American Journal of Infection Control
Johannes F Dayrit, Lunardi Bintanjoyo, Louise K Andersen, Mark Dennis P Davis
Climate change contributes to the increase in severity and frequency of flooding, which is the most frequent and deadly disaster worldwide. Flood-related damage can be very severe and include health effects. Among those health impacts, dermatological diseases are one of the most frequently encountered. Both infectious and noninfectious dermatological conditions are increasing after flooding. We searched PubMed using the search term climate change OR global warming OR rainfall OR flooding OR skin. Articles published in the English-language literature were included...
January 29, 2018: International Journal of Dermatology
Han-Chi Tseng, Chun-Bing Chen, Ji-Chen Ho, Yu-Wen Cheng, Hsin-Wei Huang, Pei-Lun Sun, Chih-Hung Lee
BACKGROUND: Protothecosis is an uncommon infection caused by the achlorophyllic algae found more commonly in tropical areas. Only a limited number of cases have been reported. OBJECTIVE: We aimed to evaluate the clinicopathological features and treatment outcomes of cutaneous protothecosis. METHODS: We retrospectively identified 20 pathology-confirmed cases of cutaneous protothecosis based on skin biopsies in two tertiary medical centers in Taiwan from 1997 to 2015...
January 22, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
Jui-Ming Liu, Chien-Yu Lin, Fung-Wei Chang, Yueh-Ping Liu, Chung-Pin Liang, Ren-Jun Hsu
Both scabies and psoriasis are pruritic inflammatory skin diseases. The clinical manifestations are similar and provocation of psoriasis by mite bite was reported. The association between scabies and psoriasis was not investigated before. We conducted this nationwide population-based matched-cohort study to describe if patients with a diagnosis of scabies have a different risk of developing new psoriasis. From the National Health Insurance Research Database of Taiwan, patients with scabies (n = 5137) were identified and matched for age and sex with non-scabies controls (n = 19 142)...
January 21, 2018: Journal of Dermatology
Yun-Qing Li, Cheng-Jian Li, Lei Lv, Qing-Qing Cao, Xian Qian, Si Wei Li, Hui Wang, Liang Zhao
Stellerachamaejasme L. has been used as a Traditional Chinese Medicine for the treatment of scabies, tinea, stubborn skin ulcers, chronic tracheitis, cancer and tuberculosis. A sensitive and selective ultra-high liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed and validated for the simultaneous determination of five flavonoids (stelleranol, chamaechromone, neochamaejasmin A, chamaejasmine and isochamaejasmin) of Stellerachamaejasme L. in rat plasma. Chromatographic separation was accomplished on an Agilent Poroshell 120 EC-C18 column (2...
January 12, 2018: Biomedical Chromatography: BMC
Mehmet Salih Gürel, Aslı Vefa Turgut Erdemir, Burak Tekin
Scabies is a pruritic dermatosis caused by the ectoparasite Sarcoptes scabiei var. hominis. The diagnosis of scabies is usually made on clinical grounds, but histopathological and/or dermoscopic examinations may sometimes be of assistance. However, these diagnostic modalities do not offer a detailed in vivo demonstration of the motile microorganism. Reflectance confocal microscopy (RCM) is a relatively novel imaging modality that permits in vivo examination of the skin at a resolution similar to that used during similar to histopathologic resolution...
December 2017: Türkiye Parazitolojii Dergisi
Yucheng Zhang, Guangde Jiang, Yousong Ding, Rosemary Loria
With few exceptions, thaxtomin A (ThxA), a nitrated diketopiperazine, is the pathogenicity determinant for plant pathogenic Streptomyces species. In Streptomyces scabiei (syn. S. scabies), the ThxA biosynthetic cluster is located within a 177 Kb mobile pathogenicity island, called the toxicogenic region (TR). In S. turgidiscabies, the ThxA biosynthetic cluster is located within a 674 Kb pathogenicity island (PAIst). Emergence of new plant pathogens occurs in this genus, but not frequently. This raises the question of whether mobilization of these pathogenicity regions, through mating, is widespread and whether TR and PAIst can confer plant pathogenicity...
January 9, 2018: Molecular Plant Pathology
Dawn R D Bignell, Zhenlong Cheng, Luke Bown
Phytotoxins are secondary metabolites that contribute to the development and/or severity of diseases caused by various plant pathogenic microorganisms. The coronafacoyl phytotoxins are an important family of plant toxins that are known or suspected to be produced by several phylogenetically distinct plant pathogenic bacteria, including the gammaproteobacterium Pseudomonas syringae and the actinobacterium Streptomyces scabies. At least seven different family members have been identified, of which coronatine was the first to be described and is the best-characterized...
January 6, 2018: Antonie Van Leeuwenhoek
M Sánchez-Borges, L González-Aveledo, A Capriles-Hulett, F Caballero-Fonseca
Scabies is observed with relatively high frequency in Allergy and Dermatology clinics in developing countries where poor sanitary conditions are prevalent and increasingly in some areas of the world with increased immigrant populations. Since the immunological response to scabies mites includes the production of IgE class antibodies to Sarcoptes scabiei allergens which cross-react with Dermatophagoides major allergens Der p 1 and Der p 2, positive immediate-type skin tests to house dust mite extracts should be interpreted cautiously...
December 23, 2017: Allergologia et Immunopathologia
Ashar Dhana, Hsi Yen, Jean-Phillip Okhovat, Eunyoung Cho, NaNa Keum, Nonhlanhla P Khumalo
No abstract text is available yet for this article.
January 2018: Journal of the American Academy of Dermatology
Fernanda Salgado, Dirk M Elston
Scabies infestation is a major cause of impetigo and subsequent renal failure in the developing world, and efforts to eradicate widespread infestation are underway. Ivermectin, topical sulfur, and topical benzyl benzoate often are used to treat widespread outbreaks.
November 2017: Cutis; Cutaneous Medicine for the Practitioner
M Begum, M K Khan, M T Hossain, M Y Ali, F S Alam, S S Dipu, A H Hasan, M Nasrin
Disease pattern is based on socio-demographic characteristics, comprehensive health care services, and environmental variables like water supply, basic sanitation and housing, illness behavior like quick decision to arrive at health care facility, and treatment behavior like the modality of treatment they receive. The descriptive cross-sectional study was conducted during the period of January 2014 to December 2015. The study was carried out among 310 purposively selected children attended at Pediatric Outpatient department of Community Based Medical College Hospital, Bangladesh...
October 2017: Mymensingh Medical Journal: MMJ
Bronwyn Lyons, Miguel R Lugo, Stephanie Carlin, Taylor Lidster, A Rod Merrill
Scabin was previously identified as a novel DNA-targeting mono-ADP-ribosyltransferase (mART) toxin from the plant pathogen 87.22 strain of Streptomyces scabies Scabin is a member of the Pierisin-like subgroup of mART toxins, since it targets DNA. An in-depth characterization of both the glycohydrolase and transferase enzymatic activities of Scabin was conducted. Several protein variants were developed based on an initial Scabin·DNA molecular model. Consequently, three residues were deemed important for DNA-binding and transferase activity...
January 5, 2018: Biochemical Journal
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