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https://www.readbyqxmd.com/read/28820401/intraepidermal-nerve-fiber-density-in-vulvar-lichen-sclerosus-and-normal-vulvar-tissues
#1
K Milian-Ciesielska, L Chmura, G Dyduch, C Jagers, E Radwanska, D Adamek
Lichen sclerosus (LS) is a chronic and inflammatory disease causing sensory symptoms such as itch and pain and affecting most frequently genital skin of women. Intraepidermal nerve fiber density (IENFD) was examined immunohistologically in 20 vulvar skin biopsies of patients affected by LS and in 20 control vulvar skin biopsies, in order to determine if these sensory sensations originate in changes in the epidermal innervation. Obtained results show fewer protein gene product 9.5 (PGP 9.5) positive intraepidermal nerve fibers (IENF) in LS tissues compared to controls (P = 0...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28820395/chemokine-c-x-c-motif-ligand-1-cxcl1-and-chemokine-c-x-c-motif-ligand-2-cxcl2-modulate-the-activity-of-trpv1-ib4-cultured-rat-dorsal-root-ganglia-neurons-upon-short-term-and-acute-application
#2
A F Deftu, A Filippi, K Shibsaki, R O Gheorghe, M Chiritoiu, V Ristoiu
CXCL1 and CXCL2 are two chemokines with 78% homology of their sequence. CXCL1 was associated with atopic dermatitis, a highly pruritic skin disease, but it is not clear what is its mechanism of action, while for CXCL2 there are no data about an association with itch sensitivity. CXCL1 and CXCL2 can modulate TRPV1 receptors, which are one of the most important downstream effectors for itch sensitivity, upon short-term (4 h) or long-term (24 h) incubation, but the data are incomplete. Therefore, the aims of this study were to better characterize the short-term effects of CXCL1 and CXCL2 on TRPV1(+)/IB4(+) dorsal root ganglia neurons known to include nociceptor and itch-sensitive neurons, and to obtain new data about the acute application (12 min) of the two chemokines on the same population of neurons...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28815720/pharmacological-evidence-of-involvement-of-nitric-oxide-pathway-in-anti-pruritic-effects-of-sumatriptan-in-chloroquine-induced-scratching-in-mice
#3
Nazgol-Sadat Haddadi, Sattar Ostadhadi, Saeed Shakiba, Khashayar Afshari, Nastaran Rahimi, Arash Foroutan, Ahmad-Reza Dehpour
Chloroquine (CQ) induces histamine-independent itch in human and mice. We recently reported the role of intradermal nitric oxide (NO)/ cyclic guanosine monophosphate (cGMP) pathway in CQ-evoked scratching in mice. Chloroquine stimulates neuronal nitric oxide synthase (nNOS) activity to over-producing NO in the skin. Sumatriptan, a 5-hydroxytryptamine 1b/1d receptors (5-HTR1b/1d) agonist, is involved in pain and used to treat migraine and cluster headaches. According to previous studies, sumatriptan inhibits NOS activity...
August 16, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28815264/agreeableness-as-predictor-of-induced-scratching-in-patients-with-atopic-dermatitis-a-replication-study
#4
Christina Schut, Katharina Reinisch, Alexander Classen, Sarah Andres, Uwe Gieler, Jörg Kupfer
In patients with atopic dermatitis agreeableness and public self-consciousness have previously been shown to be significant predictors of induced scratching, while depression was significantly related to induced itch. This study aimed to replicate these findings. Itch and scratching were induced by videos of crawling insects or skin diseases. Induced itch was measured using a visual analogue scale. Scratching behavior was evaluated by two raters. Psychological variables were assessed using validated questionnaires...
August 17, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28814067/neuro-immune-interactions-in-allergic-diseases-novel-targets-for-therapeutics
#5
Tiphaine Voisin, Amélie Bouvier, Isaac M Chiu
Recent studies have highlighted an emerging role for neuro-immune interactions in mediating allergic diseases. Allergies are caused by an overactive immune response to a foreign antigen. The peripheral sensory and autonomic nervous system densely innervates mucosal barrier tissues including the skin, respiratory tract and gastrointestinal (GI) tract that are exposed to allergens. It is increasingly clear that neurons actively communicate with and regulate the function of mast cells, dendritic cells, eosinophils, Th2 cells and type 2 innate lymphoid cells in allergic inflammation...
June 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28808209/herpes-zoster-in-breast-cancer-a-case-report
#6
Mohammad Darvishi, Narges Vasei
There is little information on herpes zoster infection in breast cancer patients as a complication during adjuvant chemotherapy. We report a case of herpes zoster in a 65-year-old woman presented with low grade fever and vital signs together with skin symptoms such as severe edema, irritation and itching in the left breast where there was wound drainage. PCR test revealed varicella zoster virus. To the best of our knowledge, the histologic features coupled with PCR led to a diagnosis of herpes zoster.
July 13, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28807414/transient-receptor-potential-vanilloid-4-expressing-macrophages-and-keratinocytes-contribute-differentially-to-allergic-and-nonallergic-chronic-itch
#7
Jialie Luo, Jing Feng, Guang Yu, Pu Yang, Madison R Mack, Junhui Du, Weihua Yu, Aihua Qian, Yujin Zhang, Shenbin Liu, Shijin Yin, Amy Xu, Jizhong Cheng, Qingyun Liu, Roger G O'Neil, Yang Xia, Liang Ma, Susan M Carlton, Brian S Kim, Kenneth Renner, Qin Liu, Hongzhen Hu
BACKGROUND: Chronic itch is a highly debilitating symptom that underlies many medical disorders with no universally effective treatments. Although unique neuronal signaling cascades in the sensory ganglia and spinal cord have been shown to critically promote the pathogenesis of chronic itch, the role of skin-associated cells remains poorly understood. OBJECTIVE: We sought to examine the cutaneous mechanisms underlying transient receptor potential vanilloid 4 (TRPV4)-mediated allergic and nonallergic chronic itch...
August 5, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28805934/fragility-of-epidermis-acne-and-post-procedure-lesional-skin
#8
G Fabbrocini, A B Rossi, M-D Thouvenin, C Peraud, V Mengeaud, A Bacquey, M Saint Aroman
'Fragile skin', or skin with lower resistance to aggressors, can be broadly classified into four causal categories: constitutional (age-dependent or associated with specific vulnerable locations on the body, e.g. eyelids), pathological (related to disease), circumstantial (related to environmental or internal factors, e.g. stress) and iatrogenic (caused by medical interventions or treatments). In this supplement, we focus on the fourth category, the iatrogenic origin of fragile skin and the role that dermo-cosmetics can have in restoring the natural protective function of the skin following treatments for skin diseases and medical interventions...
September 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28797273/host-immune-responses-to-the-itch-mite-sarcoptes-scabiei-in-humans
#9
REVIEW
Sajad A Bhat, Kate E Mounsey, Xiaosong Liu, Shelley F Walton
Scabies is a parasitic disease due to infestation of skin by the burrowing mite Sarcoptes scabiei. Scabies is a major public health problem and endemic in resource poor communities worldwide affecting over 100 million people. Associated bacterial infections cause substantial morbidity, and in severe cases can lead to renal and cardiac diseases. Mite infestation of the skin causes localised cutaneous inflammation, pruritus, skin lesions, and allergic and inflammatory responses are mounted by the host against the mite and its products...
August 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28797188/validation-of-psychometric-properties-and-development-of-response-criteria-for-the-psoriasis-symptoms-and-signs-diary-pssd-results-from-a-phase-iii-clinical-trial
#10
April Armstrong, Luis Puig, Richard Langley, Tsen Fang Tsai, Michael Song, Yasmine Wasfi, Jingzhi Jiang, Shu Li, Chenglong Han
PURPOSE: The Psoriasis Symptoms and Signs Diary (PSSD) is a patient-reported instrument that assesses severity of six psoriasis symptoms (itch, skin tightness, burning, stinging, and pain,) and five signs (dryness, cracking, scaling, shedding/flaking, redness, and bleeding). MATERIALS AND METHODS: PSSD symptoms and signs summary scores (0-100) were derived based on individual item scores (0-10 [absent-worst imaginable]). Using Psoriasis Area and Severity Index [PASI], Investigator's Global Assessment [IGA] and Dermatology Life Quality Index [DLQI]) data from the NAVIGATE trial of patients with moderate-to-severe psoriasis, analyses were conducted to further validate the PSSD (7-day recall version) and establish criteria for clinically meaningful improvements (CMIs)...
August 11, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28796116/pain-and-itch-outcome-trajectories-differ-among-european-american-and-african-american-survivors-of-major-thermal-burn-injury
#11
Matthew C Mauck, Jennifer Smith, Jeffrey W Shupp, Mark A Weaver, Andrea Liu, Andrey V Bortsov, Bilal Lateef, Samuel W Jones, Felicia Williams, James Hwang, Rachel Karlnoski, David J Smith, Bruce A Cairns, Samuel A McLean
Over half of individuals experiencing major thermal burn injury (MThBI) receive an autologous skin graft (autograft), in which skin is removed from a healthy "donor" site and transplanted to the burn site. Persistent pain/itch at the graft site are major causes of suffering and disability in MThBI survivors. African Americans have a higher risk of MThBI, and in other clinical settings African Americans experience a greater burden of pain and itch relative to European Americans. However, to our knowledge, ethnic differences in skin graft site pain/itch outcomes after MThBI have not been assessed...
August 8, 2017: Pain
https://www.readbyqxmd.com/read/28793884/therapeutic-comparison-between-treatments-for-vulvar-lichen-sclerosus-study-protocol-of-a-randomized-prospective-and-controlled-trial
#12
Renata A Belotto, Maria Cristina Chavantes, João Paulo Tardivo, Roberto Euzébio Dos Santos, Raquel Civolani Marques Fernandes, Anna Carolina Ratto Tempestini Horliana, Christiane Pavani, Daniela Fátima Teixeira da Silva
BACKGROUND: Vulvar lichen sclerosus (VLS) is a lymphocyte-mediated disease of unknown etiology that can cause intense itching as well stenosis, hindering the evacuation and urination. It can also limit the sex life due to severe local pruritus, pain and dyspareunia (pain during sexual intercourse). The standard treatment for this disease is the use of topical corticosteroids to reduce the clinical symptoms and to try to increase disease-free intervals. Photodynamic therapy (PDT), a treatment that associates a light radiation with a photosensitizing agent and photobiomodulation (PBM) are therapies that can promote effective immunomodulatory responses at the application site by means of photophysical and photochemical phenomena from the molecular to the systemic level, which promote their use in chronic dermatoses...
August 10, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28792152/prevalence-and-clinical-characteristics-of-local-allergic-rhinitis-to-house-dust-mites
#13
Chang Gyu Jung, Ji Ho Lee, Ga Young Ban, Hae Sim Park, Yoo Seob Shin
Local allergic rhinitis (LAR) is a localized nasal allergic response in the absence of systemic atopy. The aim of this study was to evaluate the prevalence and clinical characteristics of LAR in Korean rhinitis patients compared to allergic rhinitis (AR) and non-allergic rhinitis (NAR). A total of 304 rhinitis patients were enrolled from November 2014 to March 2016. A skin prick test, serum total and specific immunoglobulin E, and a nasal provocation test (NPT) with house dust mite (HDM) were performed on all patients...
September 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28790959/brain-processing-of-contagious-itch-in-patients-with-atopic-dermatitis
#14
Christina Schut, Hideki Mochizuki, Shoshana K Grossman, Andrew C Lin, Christopher J Conklin, Feroze B Mohamed, Uwe Gieler, Joerg Kupfer, Gil Yosipovitch
Several studies show that itch and scratching cannot only be induced by pruritogens like histamine or cowhage, but also by the presentation of certain (audio-) visual stimuli like pictures on crawling insects or videos showing other people scratching. This phenomenon is coined "Contagious itch" (CI). Due to the fact that CI is more profound in patients with the chronic itchy skin disease atopic dermatitis (AD), we believe that it is highly relevant to study brain processing of CI in this group. Knowledge on brain areas involved in CI in AD-patients can provide us with useful hints regarding non-invasive treatments that AD-patients could profit from when they are confronted with itch-inducing situations in daily life...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28758381/the-impact-of-allergic-rhinitis-on-symptom-improvement-in-pediatric-patients-after-adenotonsillectomy
#15
Dong-Jun Lee, Young-Jun Chung, Yeon-Jun Yang, Ji-Hun Mo
Objectives: It is well known that allergic rhinitis (AR) has positive association with adenotonsillectomy. However, the impact of AR on symptom improvement after adenotonsillectomy is not well documented. Hence, we aimed to evaluate the effect of AR on the symptom improvement after adenotonsillectomy between AR and nonallergic patients. Methods: A retrospective analysis was performed on 250 pediatric patients younger than 10 years old who received adenotonsillectomy from June 2009 to June 2014 in a tertiary referral hospital...
August 1, 2017: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/28746926/histamine-iontophoresis-as-in-vivo-model-to-study-human-skin-inflammation-with-minimal-barrier-impairment-pilot-study-results-of-application-of-the-model-to-a-sensitive-skin-panel
#16
Denise Falcone, Natallia Uzunbajakava, Renée Richters, Peter C M van de Kerkhof, Piet E J van Erp
BACKGROUND/AIMS: Histamine iontophoresis is known to elicit itch and a wheal-and-flare reaction; however, its impact on the skin barrier and underlying compartments has not been thoroughly evaluated yet. The primary objective of this study was to characterize that using immunohistochemistry, biophysical measurements, and image analysis, and secondly, to explore whether skin reactions to this model differ in sensitive skin (SS). METHODS: Eighteen healthy subjects, n = 9 with SS and n = 9 with non-sensitive skin (NSS), were included based on a perception-based questionnaire...
July 27, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28724883/calcium-prepartions-do-not-inhibit-allergic-reactions-a-randomized-controlled-trial
#17
Klaudia Matysiak, Michał Matuszewski, Wojciech Feleszko
INTRODUCTION    Massive consumption of dietary supplements, including vitamins and minerals, has recently became a serious public issue in Europe. When ingested, they may negatively affect pharmacological activity of various medications, including anti-allergic drugs. Calcium preparations are well-known and commonly used in some European countries as a popular remedy for allergy-related skin reactions, such as itching, erythema and wheals, as well as insect bites. However, their action has not been reliably proven yet...
June 27, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28722633/characterization-of-sarcoptes-scabiei-tropomyosin-and-paramyosin-immunoreactive-allergens-in-scabies
#18
Shumaila Naz, Marion Desclozeaux, Kate E Mounsey, Farhana Riaz Chaudhry, Shelley Walton
Scabies is a human skin disease due to the burrowing ectoparasite Sarcoptes scabiei var. hominis resulting in intense itching and inflammation and manifesting as a skin allergy. Because of insufficient mite material and lack of in vitro propagation system for antigen preparation, scabies is a challenging disease to develop serological diagnostics. For allergen characterization, full-length S. scabiei tropomyosin (Sar s 10) was cloned, expressed in pET-15b, and assessed for reactivity with IgE antibodies from human sera...
July 10, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719274/risk-factors-for-podoconiosis-kamwenge-district-western-uganda-september-2015
#19
Christine Kihembo, Ben Masiira, William Z Lali, Gabriel K Matwale, Joseph K B Matovu, Frank Kaharuza, Alex R Ario, Immaculate Nabukenya, Issa Makumbi, Monica Musenero, Bao-Ping Zhu, Miriam Nanyunja
AbstractPodoconiosis, a noninfectious elephantiasis, is a disabling neglected tropical disease. In August 2015, an elephantiasis case-cluster was reported in Kamwenge District, western Uganda. We investigated to identify the disease's nature and risk factors. We defined a suspected podoconiosis case as onset in a Kamwenge resident of bilateral asymmetrical lower limb swelling lasting ≥ 1 month, plus ≥ 1 of the following associated symptoms: skin itching, burning sensation, plantar edema, lymph ooze, prominent skin markings, rigid toes, or mossy papillomata...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28712817/clinical-features-and-dynamic-ordinary-laboratory-tests-differentiating-dengue-fever-from-other-febrile-illnesses-in-children
#20
Chih-Ho Chen, Yi-Chuan Huang, Kuang-Che Kuo, Chung-Chen Li
BACKGROUND: Dengue fever is not easily to be diagnosed before presentation of the classic symptoms. The study aimed to investigate the clinical features and dynamic laboratory tests in pediatric patients to facilitate dengue diagnosis. METHODS: This retrospective study examined the medical records of all pediatric patients who were clinically suspected to have dengue from June to December 2014. Laboratory-positive dengue cases were confirmed by detecting non-structural protein NS1, reverse transcription-polymerase chain reaction of dengue virus, and dengue-specific IgM seroconversion...
June 30, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
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