Background: Beekeepers face specific occupational health risks due to exposure to bee products and chemicals. Propolis is a notable cause of contact hypersensitivity in beekeepers. Its chemical composition varies by region, complicating allergy investigations. While propolis allergies are documented in Western populations, no studies exist in India.
Aim: To assess the prevalence and patterns of dermatitis among beekeepers, identify contact sensitisers and evaluate its impact on quality-of-life (QoL).
Methods: An 18-month community-based cross-sectional study was conducted involving 340 beekeepers from the Kashmir Valley in North India. Data collection included personal interviews, dermatological examinations and patch testing using self-made antigens of propolis, beeswax, royal jelly and standardised Baseline Indian Standard Series. The Dermatology Life Quality Index (DLQI) was used to measure the impact of dermatitis on QoL.
Results: Dermatitis prevalence among beekeepers was 17.1%, with the majority presenting with hand eczema. Onset or worsening of dermatitis was reported by 77.6% after working in apiaries. Significant associations were found with duration of beekeeping (p < 0.05) and a history of atopy (p < 0.001). Patch testing revealed 27.5% of beekeepers with positive reactions, primarily to propolis (10% in pet). The mean DLQI score was 3.5, indicating a generally small impact on QoL.
Conclusion: Dermatitis was a common occupational condition among beekeepers, strongly associated with the duration of beekeeping and a history of atopy, though its overall impact on QoL was limited. Propolis emerged as a primary sensitiser in the study population.
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http://dx.doi.org/10.1111/cod.14724 | DOI Listing |
In Vivo
December 2024
Department of Medicine, College of Medicine, Jeju National University, Jeju, Republic of Korea;
Background/aim: Regulatory T cells (Tregs) play a crucial role in inflammatory responses by regulating the activity of various immune cells. M2 macrophages induced by IL-10 and TGF-β exhibit anti-inflammatory functions and induce Treg differentiation. Although the beneficial effects of 3-bromo-4,5-dihydroxybenzaldehyde (BDB) on various diseases have been widely reported, the mechanisms, through which it alleviates allergic contact dermatitis (ACD) via Tregs and macrophages, are not well understood.
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December 2024
Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, 97080 Würzburg, Germany. Electronic address:
A plethora of data supports a major role of CD4 and CD8 T lymphocytes for the initiation, progression and maintenance of allergic contact dermatitis (ACD). However, in-depth understanding of the molecular mechanisms is still limited. NFATc1 plays an essential role in T cell activation.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Fort Hare Institute of Technology, University of Fort Hare, Private Bag X1314, Alice 5700, Eastern Cape, South Africa.
Energy generation and storage are critical challenges for developing economies due to rising populations and limited access to clean energy resources. Fossil fuels, commonly used for energy production, are costly and contribute to environmental pollution through greenhouse gas emissions. Quantum dot-sensitized solar cells (QDSSCs) offer a promising alternative due to their stability, low cost, and high-power conversion efficiency (PCE) compared to other third-generation solar cells.
View Article and Find Full Text PDFPain
November 2024
Center for Neuroscience, Indian Institute of Science, Bengaluru, Karnataka, India.
The neural mechanisms of the affective-motivational symptoms of chronic pain are poorly understood. In chronic pain, our innate coping mechanisms fail to provide relief. Hence, these behaviors are manifested at higher frequencies.
View Article and Find Full Text PDFJ Eur Acad Dermatol Venereol
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Clinic of Dermatology, Coimbra Local Health Unit, Faculty of Medicine, University Hospital, University of Coimbra, Coimbra, Portugal.
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