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Sunarsieh S, Akhmadi Z, Suharno S. Work fatigue and musculoskeletal disorders in gas station operators in Pontianak city, Indonesia. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2024; 30:802-806. [PMID: 38783830 DOI: 10.1080/10803548.2024.2348919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/25/2024] [Indexed: 05/25/2024]
Abstract
This study analyzes the relationship between work fatigue and musculoskeletal disorders in gas station operators in Pontianak City. This study used with a cross-sectional approach. The sample consists of 150 gas station workers. Data collection was carried out by observing and interviewing. Respondents characteristics were recorded through interviews using a questionnaire. Data on work fatigue were obtained by interviews using the IFRC questionnaire and musculoskeletal data using the Nordic Body Map questionnaire. The study results show that 50% of workers experience a high level of work fatigue, and 26% of workers experience severe musculoskeletal disorders. There is a significant relationship between work fatigue and musculoskeletal diseases (p = 0.001). The study established the need for intervention as a preventive measure by providing sufficient rest time, stretching, setting work shifts, improving ergonomic work positions for gas station operators, and controlling the work environment through environmental improvement and monitoring and using personal protective equipment.
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Affiliation(s)
- Sunarsieh Sunarsieh
- Department of Environmental Health, Politeknik Kesehatan Kementerian Kesehatan Pontianak, Indonesia
| | - Zainal Akhmadi
- Department of Environmental Health, Politeknik Kesehatan Kementerian Kesehatan Pontianak, Indonesia
| | - Suharno Suharno
- Department of Environmental Health, Politeknik Kesehatan Kementerian Kesehatan Pontianak, Indonesia
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Daci D, Altrichter S, Grillet FM, Dib S, Mouna A, Suresh Kumar S, Terhorst-Molawi D, Maurer M, Günzel D, Scheffel J. Altered Sweat Composition Due to Changes in Tight Junction Expression of Sweat Glands in Cholinergic Urticaria Patients. Int J Mol Sci 2024; 25:4658. [PMID: 38731882 PMCID: PMC11083780 DOI: 10.3390/ijms25094658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/15/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024] Open
Abstract
In cholinergic urticaria (CholU), small, itchy wheals are induced by exercise or passive warming and reduced sweating has been reported. Despite the described reduced muscarinic receptor expression, sweat duct obstruction, or sweat allergy, the underlying pathomechanisms are not well understood. To gain further insights, we collected skin biopsies before and after pulse-controlled ergometry and sweat after sauna provocation from CholU patients as well as healthy controls. CholU patients displayed partially severely reduced local sweating, yet total sweat volume was unaltered. However, sweat electrolyte composition was altered, with increased K+ concentration in CholU patients. Formalin-fixed, paraffin-embedded biopsies were stained to explore sweat leakage and tight junction protein expression. Dermcidin staining was not found outside the sweat glands. In the secretory coils of sweat glands, the distribution of claudin-3 and -10b as well as occludin was altered, but the zonula occludens-1 location was unchanged. In all, dermcidin and tight junction protein staining suggests an intact barrier with reduced sweat production capability in CholU patients. For future studies, an ex vivo skin model for quantification of sweat secretion was established, in which sweat secretion could be pharmacologically stimulated or blocked. This ex vivo model will be used to further investigate sweat gland function in CholU patients and decipher the underlying pathomechanism(s).
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Affiliation(s)
- Denisa Daci
- Clinical Physiology/Nutritional Medicine, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany; (D.D.); (S.D.); (A.M.); (S.S.K.); (D.G.)
| | - Sabine Altrichter
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, 12203 Berlin, Germany (D.T.-M.); (M.M.)
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
- Departement of Dermatology and Venerology, Kepler University Hospital, 4020 Linz, Austria
- Center for Medical Research, Johannes Kepler University, 4021 Linz, Austria
| | - François Marie Grillet
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, 12203 Berlin, Germany (D.T.-M.); (M.M.)
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Selma Dib
- Clinical Physiology/Nutritional Medicine, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany; (D.D.); (S.D.); (A.M.); (S.S.K.); (D.G.)
| | - Ahmad Mouna
- Clinical Physiology/Nutritional Medicine, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany; (D.D.); (S.D.); (A.M.); (S.S.K.); (D.G.)
| | - Sukashree Suresh Kumar
- Clinical Physiology/Nutritional Medicine, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany; (D.D.); (S.D.); (A.M.); (S.S.K.); (D.G.)
| | - Dorothea Terhorst-Molawi
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, 12203 Berlin, Germany (D.T.-M.); (M.M.)
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Marcus Maurer
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, 12203 Berlin, Germany (D.T.-M.); (M.M.)
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
| | - Dorothee Günzel
- Clinical Physiology/Nutritional Medicine, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany; (D.D.); (S.D.); (A.M.); (S.S.K.); (D.G.)
| | - Jörg Scheffel
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, 12203 Berlin, Germany (D.T.-M.); (M.M.)
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 12203 Berlin, Germany
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Munsters C, Siegers E, Sloet van Oldruitenborgh-Oosterbaan M. Effect of a 14-Day Period of Heat Acclimation on Horses Using Heated Indoor Arenas in Preparation for Tokyo Olympic Games. Animals (Basel) 2024; 14:546. [PMID: 38396514 PMCID: PMC10886293 DOI: 10.3390/ani14040546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
To optimise the performance and welfare of horses during equestrian competitions in hot climates, it is advised to acclimate them to the heat. The effects of training in a heated indoor arena were studied. Four Olympic horses (13.3 ± 2.2 years; three eventers, one para-dressage horse) were trained for 14 consecutive days in a heated indoor arena (32 ± 1 °C; 50-60% humidity) following their normal training schedule in preparation for the Tokyo Olympic games. Standardised exercise tests (SETs) were performed on Day 1 and Day 14, measuring heart rate (HR; bpm), plasma lactate concentration (LA; mmol/L), deep rectal temperature (Trec; °C), sweat loss (SL; L), and sweat composition (K+, Cl- and Na+ concentration). The data were analysed using linear mixed models. The Trec and HR were significantly decreased after acclimation (estimate: -0.106, 95% CI -0.134, -0.078; estimate: -4.067, 95% CI -7.535, -0.598, respectively). Furthermore, for all the horses, the time taken to reach their peak Trec and heat storage increased, while their LA concentrations decreased. The SL, Cl-, and Na+ concentrations decreased in three out of the four horses. Conclusions: Fourteen days of normal training in a heated indoor arena resulted in a reduction in cardiovascular and thermal strain. This is advantageous because it shows that elite sport horses can be acclimated while training as usual for a championship.
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Affiliation(s)
- Carolien Munsters
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands (M.S.v.O.-O.)
- Equine Integration B.V., Groenstraat 2c, 5528 Hoogeloon, The Netherlands
| | - Esther Siegers
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands (M.S.v.O.-O.)
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Garzarelli V, Ferrara F, Primiceri E, Chiriacò MS. Biofluids manipulation methods for liquid biopsy in minimally-invasive assays. MethodsX 2022; 9:101759. [PMID: 35774416 PMCID: PMC9237943 DOI: 10.1016/j.mex.2022.101759] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 06/10/2022] [Indexed: 12/05/2022] Open
Abstract
The Liquid Biopsy (LB) is an opportunity for non-invasive diagnosis and prognosis of various diseases. To date, it isn't possible to consider that tissue biopsy can represent a pathology entirety. Then, body fluids are rich in a large number and variety of biomarkers and they can provide information about several diseases.Recently, other biological fluids, easy to be collected are rising for their significant content of biomarkers and for the possibility to collect and manipulate them without the intervention of medical staff. The management of biological fluids requires suitable storage methods. Temperature, storage time and physical stresses due to sample handling can lead to chemical and physical changes that may induce sample degradation and incorrect analysis. The reliability of a diagnostic or screening test depends on its sensitivity and specificity. As the liquid biopsy is a 'snapshot' of a pathophysiological condition, it is crucial that its components do not degrade due to the improper handling of the body fluid. In this review, some handling methods of Saliva, Urine, Stool, Seminal Fluid, Tears and Sweat samples will be described, as well as protocols to facilitate the analysis of metabolites, nucleic acids, proteins and Extracellular Vesicles (EVs) from those unusual body fluids.
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Affiliation(s)
- Valeria Garzarelli
- University of Salento, Dept. of Mathematics & Physics E. de Giorgi, Via Arnesano, 73100, Lecce, Italy.,CNR NANOTEC - Institute of Nanotechnology, via per Monteroni, 73100, Lecce, Italy
| | - Francesco Ferrara
- CNR NANOTEC - Institute of Nanotechnology, via per Monteroni, 73100, Lecce, Italy.,STMicroelectronics s.r.l., via per Monteroni, 73100, Lecce, Italy
| | - Elisabetta Primiceri
- CNR NANOTEC - Institute of Nanotechnology, via per Monteroni, 73100, Lecce, Italy
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Wearable Microfluidic Sensor for the Simultaneous and Continuous Monitoring of Local Sweat Rates and Electrolyte Concentrations. MICROMACHINES 2022; 13:mi13040575. [PMID: 35457880 PMCID: PMC9032168 DOI: 10.3390/mi13040575] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 11/17/2022]
Abstract
Temperature elevation due to global warming increases the risks of dehydration, which can induce heat-related illness. Proper rehydration with appropriate amounts of water and electrolytes is essential to aid body fluid homeostasis. Wearable sweat sensors which can monitor both the sweat rate and sweat electrolyte concentration may be an effective tool for determining appropriate rehydration. Here, we developed a novel potentially wearable sensor that can monitor both the local sweat rate and sweat electrolyte concentration continuously. The new device includes a system with a short microfluidic pathway that guides the sweat appearing on the skin to a small space in the device to form a quantifiable droplet. The sweat rate is assessed from the time for the droplet to appear and droplet volume, while an integrated electric sensor detects the sodium chloride concentration in each sweat droplet. We demonstrated that this new device could record both the flow rates of artificial sweat and its sodium chloride concentration in ranges of human sweating with an accuracy within ±10%. This is equivalent to the accuracy of commercially available sweat rate meters and sweat ion sensors. The present study provides a new perspective for the design of wearable sensors that can continuously monitor sweat rates and sweat electrolyte concentrations for potential application to a healthcare device.
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Singaram S, Ramakrishnan K, Periasamy S. Quantification of sweat urea in diabetes using electro-optical technique. Physiol Meas 2021; 42. [PMID: 34384074 DOI: 10.1088/1361-6579/ac1d3a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/12/2021] [Indexed: 11/11/2022]
Abstract
Diabetic kidney disease is one result of prolonged elevation in blood glucose level. When insulin secretion reduces, serum urea level increases and vice versa is also true. Hence monitoring urea level in blood is important in diabetic subjects. Any change in serum urea will have impact on sweat urea concentration. Attempted in this study is to develop an optical device for quantifying sweat urea concentration. It uses light sources, light sensors with time and intensity controlled operation and suitable calibration algorithm. Sweat samples are collected from group of volunteers belonging to control and diabetes. After sedimentation and suitable pre-processing, sweat samples are irradiated by primary colour light sources operated sequentially. Reflected light intensity is used to compute the sweat urea concentration. Obtained results when compared with standard lab techniques like UV-visible absorption spectroscopy and colorimeter, correlation of 98% with error less than 3% is achieved. Results also demonstrate elevation in sweat urea level with years of diabetes, in spite of serum urea level being within limits. We extended the study on kidney disease subject and observed the influence of blood glucose on urea. Therefore the proposed device can be used to measure sweat urea periodically so that any change can be observed at an early stage and diabetic nephropathy could be prevented at large.
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Affiliation(s)
- Sudha Singaram
- Biomedical Engineering , Rajalakshmi Engineering College, Rajalakshmi Nagar, thnadalam, chennai, Chennai, 602105, INDIA
| | - Kalpana Ramakrishnan
- Biomedical Engineering, Rajalakshmi Engineering College, Thandalam, Chennai, Tamil nadu, 602105, INDIA
| | - Soundararajan Periasamy
- Department of Nephrology, Saveetha University Saveetha Medical College and Hospital, Chennai, Tamil Nadu, INDIA
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