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Song Xu, Kim De Veirman, Ann De Becker, Karin Vanderkerken, Ivan Van Riet
Multiple myeloma (MM) is a malignant plasma cell (PC) disorder, characterized by a complex interactive network of tumour cells and the bone marrow (BM) stromal microenvironment, contributing to MM cell survival, proliferation and chemoresistance. Mesenchymal stem cells (MSCs) represent the predominant stem cell population of the bone marrow stroma, capable of differentiating into multiple cell lineages, including fibroblasts, adipocytes, chondrocytes and osteoblasts. MSCs can migrate towards primary tumours and metastatic sites, implying that these cells might modulate tumour growth and metastasis...
February 22, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
B Summer, S Ständer, P Thomas
BACKGROUND: Patch test (PT) is the gold standard to reveal Nickel (Ni) allergy. In vitro tests are under discussion. We aimed to establish a cytokine based in-vitro assay to detect Ni sensitization. METHODS: From 15 patients with positive (13f, 42-78yrs) and 15 with negative PT to Ni (controls, 3f, 31-82yrs) within a consecutive patient series peripheral blood mononuclear cells (PBMC) were obtained. 6 days stimulation with 3 concentrations of NiSO4 was done. Proliferative response (uptake of tritiated thymidine) and production of the cytokines IL-1β, IL-4, IL-5, IL-6, IL-8, IL-10, IL-17A, TNFα, IFNγ (cytometric bead array) were assessed...
March 10, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
Manuel P Pereira, Sonja Ständer
The prevalence of chronic pruritus (CP) in the general population is high and increases with age. Owing to high rates of comorbidities and polypharmacy in patients aged 65 or older, the clinical management of these patients is challenging. Areas covered: In this review, the authors discuss the available therapy options for patients aged ≥ 65 with CP, including emollients for dry skin, topical therapies, phototherapy and systemic agents for CP of various origins. Expert opinion: For multimorbid patients, topical substances and phototherapy constitute the best initial options...
March 1, 2018: Expert Opinion on Pharmacotherapy
Therina du Toit, Maria A Stander, Amanda C Swart
In the present study an ultra-performance convergence chromatography tandem mass spectrometry (UPC2 -MS/MS) analytical method was developed and validated for the determination of 17 C19 and 14 C21 steroids, including C11-oxy C19 and C11-oxy C21 steroids. The limit of detection and limit of quantification ranged from 0.01 to 10 ng/mL and from 0.01 to 20 ng/mL, respectively, and the method shows the recovery, matrix effect and process efficiency of steroids isolated from a serum matrix to be within acceptable limits...
February 20, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Gil Yosipovitch, Sonja Ständer, Matthew B Kerby, James W Larrick, Andrew J Perlman, Edward F Schnipper, Xiaoming Zhang, Jean Y Tang, Thomas Luger, Martin Steinhoff
BACKGROUND: The substance P/neurokinin 1 receptor (NK1 R) pathway is critical in chronic pruritus; anecdotal evidence suggests antagonism of this pathway can reduce chronic itch. OBJECTIVE: To assess the safety and efficacy of the NK1 R antagonist serlopitant in treating chronic pruritus. METHODS: Eligible patients with severe chronic pruritus who were refractory to antihistamines or topical steroids were randomized to serlopitant 0.25, 1, or 5 mg, or placebo, administered once daily for 6 weeks as monotherapy or with midpotency steroids and emollients...
February 17, 2018: Journal of the American Academy of Dermatology
Anne K Ellis, Mark W Tenn, Lisa M Steacy, Daniel E Adams, Andrew G Day, Terry J Walker, Hendrik Nolte
BACKGROUND: Grastek® is a standardized sublingual immunotherapy tablet(SLIT-T) approved for the treatment of grass pollen-induced allergic rhinitis(AR) and conjunctivitis. Many grass-allergic patients are also co-sensitized to birch pollen. Whether Grastek® can confer symptomatic benefits for birch pollen-induced AR symptoms is unknown. OBJECTIVE: To evaluate the treatment effect of Grastek® for birch pollen-induced AR in participants sensitized to both grass and birch pollen using the Environmental Exposure Unit(EEU)...
February 9, 2018: Annals of Allergy, Asthma & Immunology
M P Pereira, H Lüling, A Dieckhöfer, S Steinke, C Zeidler, K Agelopoulos, S Ständer
BACKGROUND: Topical capsaicin shows efficacy in the treatment of brachioradial pruritus, however its mechanisms of action remain unclear. OBJECTIVE: The effect of capsaicin on the epidermis (i.e. peripheral expression of non-neuronal sensory receptors on keratinocytes, morphological changes in innervation) is still unknown. We aimed to investigate the effect of topical capsaicin on keratinocyte expression of TRP channels and on the intraepidermal nerve fibre density (IENFD) in patients with brachioradial pruritus...
February 10, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
Romy Klusener, Renata Hurtado, Nicola Stander, Nola J Parsons
The African oystercatcher Haematopus moquini is a near-threatened wader that is endemic to southern Africa. In the past, the species suffered a drastic decrease in nesting success due to human disturbance. We present the case report of an African oystercatcher that was hatched, hand-reared, and released in the Western Cape, South Africa. African oystercatchers are semi-altricial birds that tend to be highly sensitive to stress; as a result, strategies to minimize stress and the employment of surrogate parents and pre-release acclimatization are important to ensure post-release survival of hand-reared chicks...
January 31, 2018: Zoo Biology
Linzette Morris, Jessica Stander, Wardah Ebrahim, Stephanie Eksteen, Orissa Anna Meaden, Ané Ras, Annemarie Wessels
BACKGROUND: Methamphetamine (MA) is a highly addictive psychostimulant used by approximately 52 million people worldwide. Chronic MA abuse leads to detrimental physiological and neurological changes, as well as increases in anxiety and depression, and decreases in overall fitness and quality of life. Exercise has been reported to possibly reverse physiological and neurological damage caused by previous MA use, and to reduce anxiety and depression in this population. The aim of this systematic review was to identify, clinically appraise and synthesise the available evidence for the effectiveness of exercise, compared to cognitive behavioural therapy (CBT), standard care or no intervention, on decreasing anxiety and depression and improving fitness and quality of life in previous MA users...
January 16, 2018: Addiction Science & Clinical Practice
Jessica Stander, Karen Grimmer, Yolandi Brink
BACKGROUND: Research training programmes are a knowledge translation (KT) intervention which aim to improve research evidence uptake by clinicians. Whilst KT training programmes have been reported to significantly improve evidence uptake by physiotherapists, it is unclear which aspects of training optimally assist KT into physiotherapy practice. The purpose of the review was to establish the body of evidence regarding KT training programmes to improve physiotherapists' use of evidence-based practice (EBP) and clinical practice guidelines (CPG)...
January 15, 2018: BMC Medical Education
A Haep, S Murday, A Risse, D Nashan, H F Ständer
Charcot foot is also known as Charcot disease or Charcot arthropathy. The associated aseptic destruction of the bones and joints of the foot results due to peripheral neuropathy accompanied by impaired pain perception, impaired vasomotricity with increased vasodilation, and an unequal weight distribution. Because it is frequently diagnosed late and, thus, incorrectly treated, serious complications often result. An 86-year-old man in poor health was diagnosed with erysipelas of the right foot. The foot was glossy and edematously swollen, showing necrosis of the distal phalanx of the third toe...
November 28, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
Sonja Ständer, Thomas Luger, Joseph C Cappelleri, Andrew G Bushmakin, Carla Mamolo, Michael A Zielinski, Anna M Tallman, Gil Yosipovitch
Tofacitinib is an oral Janus kinase inhibitor. This post-hoc analysis aimed to investigate the psychometric properties of the Itch Severity Item (ISI), a numeric rating scale from 0 (no itching) to 10 (worst possible itching) for pruritus in psoriasis, and review the effect of tofacitinib on pruritus in patients with psoriasis participating in Phase 3 studies (n = 3,641). The ISI showed high test-retest reliability (intra-class correlation coefficient: 0.84). The clinically important difference was defined as a 1...
November 28, 2017: Acta Dermato-venereologica
Yang Liu, Xin Xie, Li-Ping Xia, Hong Lv, Fan Lou, Yan Ren, Zhi-Yi He, Xiao-Guang Luo
BACKGROUND: Neuroinflammation plays a critical role in the onset and development of neurodegeneration disorders such as Parkinson's disease. The immune activities of the central nervous system are profoundly affected by peripheral immune activities. Immune tolerance refers to the unresponsiveness of the immune system to continuous or repeated stimulation to avoid excessive inflammation and unnecessary by-stander injury in the face of continuous antigen threat. It has been proved that the immune tolerance could suppress the development of various peripheral inflammation-related diseases...
November 16, 2017: Journal of Neuroinflammation
Claudia Zeidler, Athanasios Tsianakas, Manuel Pereira, Hartmut Ständer, Gil Yosipovitch, Sonja Ständer
Prurigo nodularis (PN) is a subtype of chronic prurigo presenting single to multiple symmetrically distributed, hyperkeratotic and intensively itching papules and nodules. PN evolves along with chronic pruritus in the context of diverse dermatological, systemic, neurological or psychiatric conditions. Permanent scratching is possibly a major trigger of PN, although its exact pathophysiology remains unclear. Current state-of-the-art therapy for PN consists of topical steroids, capsaicin, calcineurin inhibitors, ultraviolet (UV) therapy, systemic administration of gabapentinoids, μ-opioid receptor antagonists, antidepressants or immunosuppressants...
August 23, 2017: Acta Dermato-venereologica
Einar B Ólafsson, Manuel Varas-Godoy, Antonio Barragan
Dendritic cells (DCs) infected by Toxoplasma gondii rapidly acquire a hypermigratory phenotype that promotes systemic parasite dissemination by a 'Trojan horse' mechanism in mice. Recent paradigms of leukocyte migration have identified the amoeboid migration mode of DCs as particularly suited for rapid locomotion in extracellular matrix and tissues. Here, we have developed a microscopy-based high-throughput approach to assess motility and matrix degradation by Toxoplasma-challenged murine and human DCs. DCs challenged with T...
November 8, 2017: Cellular Microbiology
Maria A Stander, Ben-Erik Van Wyk, Malcolm J C Taylor, Helen S Long
Tea samples from 17 populations of "wild tea" ecotypes Aspalathus linearis (rooibos tea) and 2 populations of Aspalathus pendula were analyzed. Recent advances in column technology together with high-resolution mass spectrometry were applied to improve resolution, facilitating the identification of several new compounds as well as grouping of the wild tea ecotypes according to their chemical composition. The collisional cross-section data obtained from ion mobility-mass spectrometry is reported for the flavonoids in rooibos for the first time...
November 29, 2017: Journal of Agricultural and Food Chemistry
Maria Helena Guerra Andersen, Anne Thoustrup Saber, Per Axel Clausen, Julie Elbæk Pedersen, Mille Løhr, Ali Kermanizadeh, Steffen Loft, Niels Ebbehøj, Åse Marie Hansen, Peter Bøgh Pedersen, Ismo Kalevi Koponen, Eva-Carina Nørskov, Peter Møller, Ulla Vogel
This study investigated a number of biomarkers, associated with systemic inflammation as well as genotoxicity, in 53 young and healthy subjects participating in a course to become firefighters, while wearing personal protective equipment (PPE). The exposure period consisted of a 3-day training course where the subjects participated in various live-fire training exercises. The subjects were instructed to extinguish fires of either wood or wood with electrical cords and mattresses. The personal exposure was measured as dermal polycyclic aromatic hydrocarbon (PAH) concentrations and urinary excretion of 1-hydroxypyrene (1-OHP)...
October 13, 2017: Mutagenesis
Earl Carstens, Martin Schmelz, Hamish J A Hunter, Ethan A Lerner, Laurent Misery, Martin Steinhoff, Gil Yosipovitch, Sonja Ständer
No abstract text is available yet for this article.
October 2017: Experimental Dermatology
Gaetano Terrone, Alessia Salamone, Annamaria Vezzani
BACKGROUND: The lack of treatments which can prevent epilepsy development or improve disease prognosis represents an unmet and urgent clinical need. The development of such drugs requires a deep understanding of the mechanisms underlying disease pathogenesis. In the last decade, preclinical studies in models of acute seizures and of chronic epilepsy highlighted that neuroinflammation arising in brain areas of seizure onset and generalization is a key contributor to neuronal hyper-excitability underlying seizure generation...
2017: Current Pharmaceutical Design
Sarah E Macdonald, Matthew J Nolan, Kimberley Harman, Kay Boulton, David A Hume, Fiona M Tomley, Richard A Stabler, Damer P Blake
Eimeria species cause the intestinal disease coccidiosis, most notably in poultry. While the direct impact of coccidiosis on animal health and welfare is clear, its influence on the enteric microbiota and by-stander effects on chicken health and production remains largely unknown, with the possible exception of Clostridium perfringens (necrotic enteritis). This study evaluated the composition and structure of the caecal microbiome in the presence or absence of a defined Eimeria tenella challenge infection in Cobb500 broiler chickens using 16S rRNA amplicon sequencing...
2017: PloS One
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