Blood manganese and alcohol consumption interact on mood states among manganese alloy production workers

Related Experiment Video

Updated: Sep 20, 2026

Setup of Capillary Electrophoresis-Inductively Coupled Plasma Mass Spectrometry (CE-ICP-MS) for Quantification of Iron Redox Species (Fe(II), Fe(III))
04:48

Setup of Capillary Electrophoresis-Inductively Coupled Plasma Mass Spectrometry (CE-ICP-MS) for Quantification of Iron Redox Species (Fe(II), Fe(III))

Published on: May 4, 2020

Maryse Bouchard1, Donna Mergler, Mary Baldwin

  • 1CINBIOSE, University of Québec in Montréal, Montréal, Québec, Canada. bouchard.maryse.2@courrier.uqam.ca

Neurotoxicology
|August 6, 2003
PubMed

Insights

This study found that high blood manganese (MnB) levels combined with heavy alcohol consumption significantly worsen mood states in manganese-exposed workers. This interaction highlights a critical risk factor for neuropsychiatric symptoms.

Area of Science:

  • Occupational Health
  • Neurotoxicology
  • Environmental Health

Background:

  • Long-term manganese (Mn) exposure can cause neurotoxicity with significant individual variability.
  • Blood manganese (MnB) may interact with alcohol use disorders, potentially worsening neuropsychiatric symptoms.

Purpose of the Study:

  • To investigate the interaction between alcohol consumption and blood manganese (MnB) levels on mood states in Mn-exposed workers.
  • To analyze existing data from Mn-exposed workers using mood state assessments.

Main Methods:

  • Utilized a dataset of 74 Mn-exposed workers reporting current alcohol consumption.
  • Grouped participants based on MnB concentration (<10 vs. ≥10 µg/l) and weekly alcohol intake (<400 vs. ≥400g).
  • Performed two-way ANOVAs on Profile of Mood States (POMS) scales to assess interactions.

Main Results:

  • Higher alcohol consumption correlated with increased tension, anger, and fatigue.
  • A significant interaction between alcohol consumption and MnB was found for depression, anger, fatigue, and confusion POMS scales.
  • The highest mood disturbance scores were observed in workers with both high alcohol consumption and high MnB levels.

Conclusions:

  • Provides the first evidence of an interaction between blood manganese and alcohol consumption affecting mood in Mn-exposed workers.
  • Suggests that combined exposure to manganese and alcohol exacerbates negative mood states, increasing neuropsychiatric risks.
  • Supports previous findings from population-based studies on this interaction.

More Related Videos

Functional Neuroimaging Using Ultrasonic Blood-brain Barrier Disruption and Manganese-enhanced MRI08:36

Functional Neuroimaging Using Ultrasonic Blood-brain Barrier Disruption and Manganese-enhanced MRI

Published on: July 12, 2012

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder05:12

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder

Published on: June 23, 2023

Related Concept Videos

Radical Oxidation of Allylic and Benzylic Alcohols01:21

Radical Oxidation of Allylic and Benzylic Alcohols

Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...
Stress and Mental Health01:30

Stress and Mental Health

Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...