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https://www.readbyqxmd.com/read/28149788/prevalence-of-ocular-demodicosis-among-patients-at-tertiary-care-center-bangkok-thailand
#1
Ngamjit Kasetsuwan, Kitchaporn Kositphipat, Mathu Busayarat, Pawanrat Threekhan, Kanok Preativatanyou, Atchara Phumee, Padet Siriyasatien
AIM: To determine the prevalence of ocular demodicosis by both microscopic examination and molecular detection among patients at King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok. METHODS: One hundred individuals were enrolled in the study and were divided into five age groups. The meibomian gland dysfunction (MGD) score and qualities of cylindrical dandruff (CD) were also determined. Demodex mite infestations of eyelash samples were screened by both microscopic examination and semi-nested polymerase chain reaction (PCR)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28091390/demodex-spp-infestation-associated-with-treatment-resistant-chalazia-and-folliculitis
#2
Ulviye Güvendi Akçınar, Emine Ünal, Metin Akpınar
Demodecidosis is an ectoparasitosis of pilosebaceous unit caused by demodex mites. The disease may be a primary skin disease or a secondary disease to inflammatory dermatoses such as folliculitis and rosacea. Demodex spp. blepharitis is an infectious ocular disease that is common but always neglected. These mites contain lipase enzymes that help carry bacteria on the surface. The infestation of Demodex spp. has increasingly become a public health concern. A 29-year-old male patient was admitted to our dermatology clinic with a complaint of papules and pustules on his face, which started 4 years ago...
December 2016: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28063008/association-study-of-demodex-bacteria-and-facial-dermatoses-based-on-dgge-technique
#3
YaE Zhao, Fan Yang, RuiLing Wang, DongLing Niu, Xin Mu, Rui Yang, Li Hu
The role of bacteria is unclear in the facial skin lesions caused by Demodex. To shed some light on this issue, we conducted a case-control study comparing cases with facial dermatoses with controls with healthy skin using denaturing gradient gel electrophoresis (DGGE) technique. The bacterial diversity, composition, and principal component were analyzed for Demodex bacteria and the matched facial skin bacteria. The result of mite examination showed that all 33 cases were infected with Demodex folliculorum (D...
January 6, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28012607/do-demodex-mites-play-a-role-in-pterygium-development
#4
Witold Tarkowski, Joanna Moneta-Wielgoś, Daniel Młocicki
Numerous reports point to Demodex mites as the aetiology of certain eye and skin conditions, hence it is highly probable that infestation with these mites may also play a role in the aetiology and pathogenesis of pterygium. Therefore here we present a hypothesis: whether the presence of Demodex mites in eyelash hair follicles significantly correlates with the presence of pterygia, which could point to a potential role of these mites in the development of such lesions. We present preliminary data for supporting this hypothesis...
January 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/27976437/monitoring-structural-changes-in-demodex-mites-under-topical-ivermectin-in-rosacea-by-means-of-reflectance-confocal-microscopy-a-case-series
#5
LETTER
C Ruini, E Sattler, D Hartmann, M Reinholz, T Ruzicka, T von Braunmühl
No abstract text is available yet for this article.
December 15, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27966307/the-effects-of-sebum-configuration-on-demodex-spp-density
#6
Hatice Gamze Demirdağ, Hamdi Özcan, Şule Gürsoy, Gülçin Beker Akbulut
BACKGROUND/AIM: Demodex spp. are ectoparasites living in the pilosebaceous units, which feed on the host's sebum and cellular proteins. The protective barrier of the skin consists of sebum secretion, moisture, and the acid mantle. In this study, we aimed to determine the effects of skin sebum, moisture, pH levels, and sebum configuration on Demodex spp. density. MATERIALS AND METHODS: Forty-five patients who had demodicosis were enrolled in the study group, while the control group consisted of 40 subjects without demodicosis...
November 17, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/27894366/evolution-of-host-range-in-the-follicle-mite-demodex-kutzeri
#7
Michael F Palopoli, VAN Tra, Kassey Matoin, Phuong D Mac
The sequences of four mitochondrial genes were determined for Demodex mites isolated from two distantly related species within the family Cervidae, and identified morphologically as belonging to the species Demodex kutzeri. The sequences were used to test the hypothesis that Demodex are strictly host-specific, and hence cospeciate with their hosts: (1) The estimated divergence time between mites found on elk vs humans agreed closely with a previous estimate of the time that these host species last shared a common ancestor, suggesting cospeciation of mites and hosts, at least over long evolutionary timescales...
November 29, 2016: Parasitology
https://www.readbyqxmd.com/read/27875092/morphological-variability-of-demodex-cati-in-a-feline-immunodeficiency-virus-positive-cat
#8
Elien R L Taffin, Stijn Casaert, Edwin Claerebout, Thomas J J Vandekerkhof, Sophie Vandenabeele
CASE DESCRIPTION A 17-year-old FIV-positive cat was evaluated because of weight loss during the preceding few months. The cat had a weight loss of 0.5 kg (1.1 lb) during the last month. Because of its FIV-positive status, the cat was confined indoors. CLINICAL FINDINGS A large nonpruritic area of alopecia with hyperpigmentation and comedones was present on the right lateral aspect of the neck. The chin had diffuse alopecia and comedones. Mild alopecia was present on the dorsal aspect of the muzzle. Trichography and microscopic examination of acetate tape imprint preparations and skin scrapings revealed a very morphologically heterogeneous population of Demodex mites...
December 1, 2016: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/27828651/bacillus-cereus-strain-isolated-from-demodex-folliculorum-in-patients-with-topical-steroid-induced-rosaceiform-facial-dermatitis
#9
Alin Laurentiu Tatu, Marius Anton Ionescu, Victor Gabriel Clatici, Violeta Corina Cristea
The aim of the study was to identify Bacillus species from the Demodex folliculorum of patients with topical steroidinduced facial rosaceiform dermatitis. Of the 75 patients examined, 20% had clinical spinulosis, while 18.66% had dermoscopic features of Demodex: follicular plugs and tails. Of the 17.33% positive patients identified upon microscopy for Demodex, samples for bacterial culture were plated on trypticase soy Colombia agar. Identification was performed by microorganisms grown method mass spectrometry...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/27802779/assessment-of-demodex-presence-in-acne-like-rash-associated-with-cetuximab
#10
Deniz Aksu Arıca, Turkan Ozturk Topcu, Leyla Baykal Selçuk, Savas Yaylı, Unzile Seyman, Evren Fidan, Sevgi Bahadır, Halil Kavgacı
CONTEXT: Cetuximab is an epidermal growth factor receptor inhibitor. It is frequently used in the treatment of solid tumors. However, it has a high potential to cause acne-like rash. Demodex mites, which are known to increase in number in immunosuppressive circumstances, are closely related to the acneiform lesions. OBJECTIVE: The aim of this study is to evaluate the presence of demodex mites in acne-like rash that appears under the treatment of Cetuximab. METHODS: We reviewed the medical records of patients who applied to our clinic with cetuximab induced papulopustular rashes between November 2014 and March 2016...
November 16, 2016: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/27802314/detection-prevalence-and-phylogenetic-relationships-of-demodex-spp-and-further-skin-prostigmata-mites-acari-arachnida-in-wild-and-domestic-mammals
#11
Natalia Sastre, Olga Francino, Joseph N Curti, Tiffany C Armenta, Devaughn L Fraser, Rochelle M Kelly, Erin Hunt, Katja Silbermayr, Christine Zewe, Armand Sánchez, Lluís Ferrer
This study was conceived to detect skin mites in social mammals through real-time qPCR, and to estimate taxonomic Demodex and further Prostigmata mite relationships in different host species by comparing sequences from two genes: mitochondrial 16S rRNA and nuclear 18S rRNA. We determined the mite prevalence in the hair follicles of marmots (13%) and bats (17%). The high prevalence found in marmots and bats by sampling only one site on the body may indicate that mites are common inhabitants of their skin. Since we found three different mites (Neuchelacheles sp, Myobia sp and Penthaleus sp) in three bat species (Miotis yumanensis, Miotis californicus and Corynorhinus townsendii) and two different mites (both inferred to be members of the Prostigmata order) in one marmot species (Marmota flaviventris), we tentatively concluded that these skin mites 1) cannot be assigned to the same genus based only on a common host, and 2) seem to evolve according to the specific habitat and/or specific hair and sebaceous gland of the mammalian host...
2016: PloS One
https://www.readbyqxmd.com/read/27796564/parasites-and-vector-borne-diseases-in-client-owned-dogs-in-albania-infestation-with-arthropod-ectoparasites
#12
Enstela Shukullari, Dhimitër Rapti, Martin Visser, Kurt Pfister, Steffen Rehbein
To establish the diversity and seasonality of ectoparasite infestation in client-owned dogs in Albania, 602 dogs visiting four small animal clinics in Tirana from March 2010 to April 2011 inclusive were examined for ectoparasites by full body search and total body comb. In addition, ear swab specimens collected from all dogs and scrapings taken from skin lesions suspicious of mite infestation were examined for parasitic mites. Overall, 93 dogs (15.4 %, 95%CI 12.6-18.6) were demonstrated to be infested, and nine species of ectoparasites were identified: Ixodes ricinus, 0...
January 2017: Parasitology Research
https://www.readbyqxmd.com/read/27787205/ocular-symptoms-reported-by-patients-infested-with-demodex-mites
#13
Aleksandra Sędzikowska, Maciej Osęka, Barbara Grytner-Zięcina
The purpose of this study was to determine subjective ocular symptoms occurring in patients infested with Demodex. The number of Demodex mites in the obtained material that correlated with the appearance of ocular symptoms was estimated. The study material were eyelashes collected from 1499 patients. The material were observed under a light microscope. T-test, the logistic regression method, and Pearson correlation coefficient were used for the analysis. Demodex mites were detected in 47% patients. The mean ages of infected women and men were 64 and 59 years, respectively...
December 1, 2016: Acta Parasitologica
https://www.readbyqxmd.com/read/27600257/efficacy-and-safety-of-permethrin-5-topical-gel-vs-placebo-for-rosacea-a-double-blind-randomized-controlled-clinical-trial
#14
K Raoufinejad, P Mansouri, M Rajabi, Z Naraghi, R Jebraeili
BACKGROUND: Rosacea is a chronic, multifactorial, dermatological condition. Increased density of Demodex folliculorum mites in the skin of rosacea patients suggests a possible role for these mites in the pathophysiology of rosacea. OBJECTIVE: To evaluate the effects of permethrin 5% topical gel vs. placebo on Demodex density (Dd) and clinical presentations of rosacea patients, and also to further refine the quantitative assessment of Dd in the non-invasive standard skin surface biopsy (SSSB)...
December 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27579708/dermoscopy-confocal-microscopy-and-optical-coherence-tomography-for-the-diagnosis-of-bedbug-infestation
#15
LETTER
E Cinotti, M Espinasse, B Labeille, F Cambazard, J L Perrot
No abstract text is available yet for this article.
August 31, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27573185/two-consecutive-standardized-skin-surface-biopsies-an-improved-sampling-method-to-evaluate-demodex-density-as-a-diagnostic-tool-for-rosacea-and-demodicosis
#16
Fabienne M N Forton, Viviane De Maertelaer
Diagnosing papulopustular rosacea is not always straightforward; no specific diagnostic test is currently available. A high density of Demodex mites is consistently observed in this condition. This retrospective study assesses an improved method for evaluating Demodex density among 1,044 patients presenting to our dermatology practice. The skin was cleaned with ether and Demodex densities were measured in 2 consecutive standardized skin surface biopsies taken from the same site. Mean densities in patients with rosacea and demodicosis were much higher than those in healthy controls and patients with other facial dermatoses...
February 8, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/27538858/demodex-musculi-infestation-in-genetically-immunomodulated-mice
#17
Peter C Smith, Caroline J Zeiss, Amanda P Beck, Jodi A Scholz
Demodex musculi, a prostigmatid mite that has been reported infrequently in laboratory mice, has been identified with increasing frequency in contemporary colonies of immunodeficient mice. Here we describe 2 episodes of D. musculi infestation with associated clinical signs in various genetically engineered mouse strains, as well as treatment strategies and an investigation into transmissibility and host susceptibility. The first case involved D. musculi associated with clinical signs and pathologic lesions in BALB/c-Tg(DO11...
2016: Comparative Medicine
https://www.readbyqxmd.com/read/27399141/treatment-of-mites-folliculitis-with-an-ornidazole-based-sequential-therapy-a-randomized-trial
#18
Yang Luo, Yu-Jiao Sun, Li Zhang, Xiu-Li Luan
OBJECTIVE: Treatment of Demodex infestations is often inadequate and associated with low effective rate. We sought to evaluate the efficacy of an ornidazole-based sequential therapy for mites folliculitis treatment. METHODS: Two-hundred patients with mites folliculitis were sequentially treated with either an ornidazole- or metronidazole-based regimen. Sebum cutaneum was extruded from the sebaceous glands of each patient's nose and the presence of Demodex mites were examined by light microscopy...
July 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27362250/increased-density-of-demodex-folliculorum-may-be-related-to-additional-risk-factors
#19
Emine Unal, Ulviye Guvendi Akcinar, Yalcin Basaran
No abstract text is available yet for this article.
July 2016: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/27341742/demodex-phylloides-infection-in-swine-reared-in-a-peri-urban-family-farm-located-on-the-outskirts-of-the-metropolitan-region-of-s%C3%A3-o-paulo-brazil
#20
Josete Garcia Bersano, Márcia Cristina Mendes, Fernanda Calvo Duarte, Claudia Del Fava, Sueli Moda de Oliveira, Elizabeth Spósito Filha, Eliana Scarcelli Pinheiro, Alessandra Figueiredo de Castro Nassar, Maria Cristina de Vasconcellos Bilynskyj, Renato Akio Ogata, Paulo Henrique Selbmann Sampaio, Margareth Élide Genovez
This paper reports the occurrence of porcine demodicosis caused by the mite Demodex phylloides in hogs reared in a peri-urban family farm located in Francisco Morato, a municipality of the Metropolitan Region of São Paulo, capital city of the state of São Paulo, Brazil. In a parcel of forty Landrace - Large White cross hogs, approximately four months old, four animals presented severe skin lesions in the form of small nodules over their entire body, especially in the periocular region, snout, lower abdomen and flanks...
October 30, 2016: Veterinary Parasitology
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