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Lima DRDS, Silva FSQD, borges RM, Marques RC, Moreira MDFR. Tin speciation in the blood plasma of workers occupationally exposed in a cassiterite ore processing industry. SAÚDE EM DEBATE 2022. [DOI: 10.1590/0103-1104202213315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT Mining is a high-risk activity due to its dangerous processes. Tin (Sn) is obtained from cassiterite ore and mining activities expose workers to the metal. Chronic exposure to Sn may cause pneumoconiosis, gastrointestinal and hematological effects, among others. This work aimed to assess the exposure of workers to tin in a cassiterite ore processing industry, using the speciation analysis in blood plasma. Twelve subjects donated the blood samples; six were occupationally exposed to Sn. Size exclusion chromatography separated proteins in blood plasma; a graphite furnace atomic absorption spectrometer determined total tin in the plasma and eluted fractions, while SDS-PAGE determined molecular masses of proteins. Tin levels in the workers’ plasma were four times higher than in the reference individuals. After fractionation, the metal only appeared in the total inclusion volume, not being possible to confirm the binding of tin to proteins, which certainly modifies their functions and impair workers’ health. Despite that, the work process needs to change since Sn levels in the workers’ plasma pointed to metal exposure. Further works are necessary to clarify whether the metal is free or bound to small proteins in blood plasma and understand the true impact of tin on workers’ health.
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Liu WS, Chan HL, Lai YT, Yang YH, Teng HW, Liu CK, Li SY, Yang CY, Liu TY, Lin CC. Shift from darbepoetin-α to continuous erythropoietin receptor activator decreases serum aluminium concentration in patients on hemodialysis. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 45:108-114. [PMID: 27267426 DOI: 10.1016/j.etap.2016.05.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 05/14/2016] [Accepted: 05/21/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE The response of erythropoietic stimulating agents (ESA) in uremic patients may be associated with the changes of biochemical parameters, metal elements and inflammation status during the shift from one ESA to another. METHOD We compared changes in above mentioned factors after switching from darbepoetin-α (DPO) 20μg weekly for 10 weeks to continuous erythropoietin receptor activator (CERA) 100μg monthly for 10 weeks in uremic patients on hemodialysis. The haematocrit (Hct), metal elements and inflammation status are the primary outcome. Subjects included 54 patients without transfusion or bleeding or additional ESAs. Responders (IR, n=36) were defined as patients with an increase in Hct after the swtich. RESULT Although there was no significant difference in overall mean Hct after the switch (p=0.135), there are significantly greater mean number of red blood cells (RBC) (p=0.006), higher platelet numbers (p=0.001), larger RBCs (p=0.017) and higher creatinine (p=0.04) and total cholesterol (T-CHOL) (p=0.003) levels. Mean overall aluminium (Al) level decreased significantly (p=0.001). C-reactive protein (CRP) also decreased (p=0.016). The overall LDH increased (p=0.049) and potassium decreased significantly (p=0.036), which indicating active erythropoiesis. The calcium (Ca) level was significantly higher (p=0.034) and phosphate was significantly lower (p=0.028) after the shift. Although there was no significant increase in overall levels of parathyroid hormone (PTH) after the shift (p=0.061), but the pre-shift and post-shift PTH level was significantly higher in IRs than in non-IRs (p=0.003 and p=0.027, respectively). IRs had a significantly lower initial T-CHOL (p=0.03) and initial CRP (p=0.012) than non-responders, which may be related to lower inflammation. CONCLUSION We found the shift from DPO to CERA results in lower Al levels, a reduced inflammatory response, and an increase in RBC number and PTH level in uremic patients on hemodialysis.
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Affiliation(s)
- Wen-Sheng Liu
- Division of Nephrology, Department of Medicine, Taipei City Hospital, Zhong-Xing Branch, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Environmental and Occupational Health Sciences, School of Medicine, National Yang-Ming University, Taipei, Taiwan; College of Science and Engineering, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Hsiang-Lin Chan
- Department of Child Psychiatry, Chang Gung Memorial Hospital and University, Taoyuan, Taiwan
| | - Yen-Ting Lai
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan; Department of Nursing, Yuanpei University, Hsinchu, Taiwan
| | - Ya-Hsu Yang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Psychiatry, Taipei City Hospital, Renai Branch, Taipei, Taiwan
| | - Hao-Wei Teng
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chih-Kuang Liu
- College of Medicine & Graduate Institute of Business Administration, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Szu-Yuan Li
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Nephrology, and Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chih-Yu Yang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Nephrology, and Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Tsung-Yun Liu
- Institute of Environmental and Occupational Health Sciences, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Chih-Ching Lin
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Nephrology, and Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
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Liu J, Luo K, Song Z. Binding study of lysozyme with Al(III) using chemiluminescence analysis. LUMINESCENCE 2013; 29:630-6. [DOI: 10.1002/bio.2596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 08/21/2013] [Accepted: 09/06/2013] [Indexed: 01/13/2023]
Affiliation(s)
- Jiangman Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Material Science; Northwest University; Xi'an China
| | - Kai Luo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Material Science; Northwest University; Xi'an China
| | - Zhenghua Song
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Material Science; Northwest University; Xi'an China
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Ma F, Sun C, Zhou W, Xu C, Zhou J, Wang G, Yang X. Investigation and comparison of bovine hemoglobin binding to Al₁₃ and Al(III): evidences from spectroscopic studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:885-891. [PMID: 22902932 DOI: 10.1016/j.saa.2012.07.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 07/17/2012] [Accepted: 07/23/2012] [Indexed: 06/01/2023]
Abstract
The UV-vis, steady state/time resolved fluorescence spectroscopy and circular dichroism spectroscopy are employed to investigate the interaction mechanisms of Al(13)-Hb and Al(III)-Hb, respectively. The UV-vis studies represent that Al(13) and Al(III) could directly disturb the structure of Hb and induce the heme group exposed to the aqueous medium. Steady state/time resolved and synchronous fluorescence spectroscopy reveal that Al(13) and Al(III) can change the polarity around the fluorophore molecule of Hb. Al(13) makes the protein unfolding and Al(III) induces the protein buried inside the structure. The interaction processes are static quenching mechanisms and the main forces are electrostatic interactions. Moreover, circular dichroism spectra display Al(13) makes greater effect than Al(III), which is reflected on the degrees of α-helix of Hb. The comparison results suggest that Al(13) displays stronger toxicity.
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Affiliation(s)
- Fei Ma
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
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