Manganese Concentrations In Hair and Fingernail of Some Kano Inhabitants

Ayodele, J. T.; Bayero, AS

doi:10.4314/jasem.v14i1.56472

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Atomic absorption spectrometry (AAS) [10][11][12][13][14], inductively coupled plasma optical emission spectrometry (ICP-OES) [15,16], electrothermal atomic absorption spectrometry [17], and inductively coupled plasma mass spectrometry [18,19] are among the methods most frequently used for the determination of Zn, Cu, Fe, and Mn with different detection limits.…”

mentioning

confidence: 99%

Determination of Zinc, Copper, Iron, and Manganese in Different Regions of Lamb Brain

Bakırdere

Kizilkan

Yaman

2010

Biol Trace Elem Res

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The levels of zinc, copper, iron, and manganese were measured in the hippocampus, thalamus, gyrus cinguli, hypothalamus, and in the prefrontal, parietal, temporal, and occipital cortexes of lamb brain by flame atomic absorption spectrometry. Standard addition method was also applied to samples and it was observed that there was no matrix interference affecting the determination of elements interested. In the determination of Cu, a slotted tube atom trap was used to improve sensitivity. One-way analysis of variance was used for the statistical evaluation of the results for each element. Limit of detection results for Zn, Cu, Fe, and Mn were found to be 24, 4.5, 60, and 25 ng/mL, respectively. Region-specific differences were found for all elements interested. Mn concentration ranging from 0.29 ± 0.04 to 0.61 ± 0.04 mg/kg was found to be the lowest in all brain regions among the all elements interested.

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mentioning

confidence: 99%

Determination of Zinc, Copper, Iron, and Manganese in Different Regions of Lamb Brain

Bakırdere

Kizilkan

Yaman

2010

Biol Trace Elem Res

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“…Briefly, nails will be washed in a Triton X-100 solution, put in acetone, repeatedly rinsed with ultrapure water, and then dried in an oven. Later, the dried nails will be digested with spectroscopic-grade acid in a microwave digestion oven (Mars-Express6, CEM), diluted to 10 mL with ultrapure water, and analyzed electrothermal atomic absorption spectrometry with Zeeman background correction [42,43]. All processed samples and reference material from the International Atomic Energy Agency (ie, 085) will be analyzed in duplicates.…”

Section: Methodsmentioning

confidence: 99%

Exposure to Pesticides and Health Effects on Farm Owners and Workers From Conventional and Organic Agricultural Farms in Costa Rica: Protocol for a Cross-Sectional Study

Fuhrimann¹,

Winkler²,

Staudacher³

et al. 2019

JMIR Res Protoc

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Background Pesticide use is increasing in low- and middle-income countries (LMICs) including Costa Rica. This increase poses health risks to farm owners, farm workers, and communities living near agricultural farms. Objective We aimed to examine the health effects associated with occupational pesticide exposure in farm owners and workers from conventional and organic smallholder farms in Costa Rica. Methods We conducted a cross-sectional study involving 300 owners and workers from organic and conventional horticultural smallholder farms in Zarcero County, Costa Rica. During the baseline study visit, we administered a structured, tablet-based questionnaire to collect data on sociodemographic characteristics, pesticide exposure, and health conditions (eg, respiratory and allergic outcomes and acute pesticide intoxication symptoms) and administered a neurobehavioral test battery (eg, Finger Tapping Test and Purdue Pegboard); we measured blood pressure, anthropometry (height, weight, and waist circumference), and erythrocytic acetylcholinesterase activity and also collected urine samples. In addition, a functional neuroimaging assessment using near-infrared spectroscopy was conducted with a subset of 50 study participants. During the follow-up study visit (~2-4 weeks after the baseline), we administered participants a short questionnaire on recent pesticide exposure and farming practices and collected hair, toenail, and urine samples. Urine samples will be analyzed for various pesticide metabolites, whereas toenails and hair will be analyzed for manganese (Mn), a biomarker of exposure to Mn-containing fungicides. Self-reported pesticide exposure data will be used to develop exposure intensity scores using an exposure algorithm. Furthermore, exposure-outcome associations will be examined using linear and logistic mixed-effects regression models. Results Fieldwork for our study was conducted between May 2016 and August 2016. In total, 113 farm owners and 187 workers from 9 organic and 83 conventional horticultural smallholder farms were enrolled. Data analyses are ongoing and expected to be published between 2019 and 2020. Conclusions This study is one of the first to examine differences in health effects due to pesticide exposure between farm owners and workers from organic and conventional smallholder farms in an LMIC. We expect that this study will provide critical data on farming practices, exposure pathways, and how occupational exposure to pesticides may affect farm owners and workers’ health. Finally, we hope that this study will allow us to identify strategies to reduce pesticide exposure in farm owners and workers and will potentially lay the groundwork for a future longitudinal study of health outcomes in farm owners and workers exposed to pesticides. International Registered Report Identifier (IRRID) DERR1-10.2196/10914

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“…Özellikle hemoglobinin yapısı, bağışıklık ve enerji sistemi için çok önemlidir [22]. Mn ve Zn'nun antioksidan enzimlerin aktivitesinde ve hücrede radikallere karşı savunmada önemli fonksiyonları vardır [23,24]. Mg metabolizmada üç yüzden fazla enzimin yapısında kofaktör olarak önemli rol oynar.…”

Section: Analizlerunclassified

Çiğ ve UHT Sütlerinde Kimyasal Parametre Değişimlerinin Tespiti

Sucak

Özkaya

Ağyar

et al. 2020

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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Öz Bu çalışma, çiğ ve ticari UHT inek sütlerinin bazı biyokimyasal parametreler yönünden karşılaştırılması amacıyla yapıldı. Bu amaçla, süt numunelerinin mineral ve kimyasal bileşen parametre seviyeleri, sırasıyla İndüklenmiş Eşleşmiş Plazma Atomik Emisyon Spektrofotometresi (ICP-OES) ve Foss Electrik (FT-120) süt analizörü cihazları kullanılarak ölçüldü. Doğal inek çiğ sütleri Muş Bölgesinden temin edilirken, ticari amaçla üretilen UHT sütleri Adıyaman ilindeki yerel marketlerden temin edildi. UHT sütleri tam yağlı ve yarım yağlı olarak iki gruba ayrıldı. Çiğ süt minerallerinden kalsiyum (Ca), demir (Fe), mangan (Mn) ve fosfor (P) düzeylerinin ticari sütlere göre daha yüksek çıktığı belirlendi. Ayrıca, çiğ süt kimyasal parametrelerinden yağsız kuru madde, yağ ve protein düzeylerinin de daha yüksek çıktığı gözlendi. Çalışma sonuçlara dayanarak, ticari inek sütlerin besinsel düzeylerindeki azalmanın insan sağlığını etkileyebilecek oranda olmadığını düşünmekteyiz.

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Manganese Concentrations In Hair and Fingernail of Some Kano Inhabitants

Cited by 5 publications

References 12 publications

Determination of Zinc, Copper, Iron, and Manganese in Different Regions of Lamb Brain

Determination of Zinc, Copper, Iron, and Manganese in Different Regions of Lamb Brain

Exposure to Pesticides and Health Effects on Farm Owners and Workers From Conventional and Organic Agricultural Farms in Costa Rica: Protocol for a Cross-Sectional Study

Çiğ ve UHT Sütlerinde Kimyasal Parametre Değişimlerinin Tespiti

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