INTRODUCTION: Iron is a vital nutrient for many physiological processes including DNA production, oxygen transport and neuronal processes. However, several factors limit iron absorption including: limited bioavailability of iron (dietary or supplementation sources), can be subject to dietary iron inhibitors (e.g. calcium). Excess iron can cause cellular oxidative stress in the body. Curcumin is an active component found in turmeric, known for its anti-oxidant and anti-inflammatory properties. Co-administration of iron and curcumin may influence iron, inflammatory status and/or neurotrophic markers in the body.
Intervention study with five parallel treatment groups in a randomised, double-blind, placebo-controlled design. Study population: Healthy Participants (Male or Female) will receive daily supplements (active or equivalent placebos) for 6 weeks (42 days) Biological samples (blood and urine samples) are collected at baseline visit (day 1), mid-point (day 21) and end-point (day 42). In addition, pertinent questionnaires (Visual Analogue Scale-Fatigue \[VAS-F\] and oral iron supplement questionnaire will be collected at the aforementioned time points.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
QUADRUPLE
Enrollment
155
Oral ferrous salt supplement Ferrous Sulphate 200 mg (equiv. 65 mg elemental iron content) Participants instructed to swallow opaque capsules with water away from meals (on an empty stomach) At the mid-point visit day (day 21) and the finally at the end-point (day 42) compliance will be verified by counting capsules
HydroCurc™ 500 mg formulated curcumin At the mid-point visit day (day 21) and the finally at the end-point (day 42) compliance will be verified by counting capsules Participants instructed to swallow opaque capsules with water away from meals (on an empty stomach)
Microcrystalline cellulose Participants instructed to swallow opaque capsules with water away from meals (on an empty stomach)
Microcrystalline cellulose Participants instructed to swallow opaque capsules with water away from meals (on an empty stomach)
Oral ferrous salt supplement Ferrous Sulphate 55 mg (equiv. 18 mg elemental iron content) Participants instructed to swallow opaque capsules with water away from meals (on an empty stomach) At the mid-point visit day (day 21) and the finally at the end-point (day 42) compliance will be verified by counting capsules
University of Westminster
London, United Kingdom
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated inflammation
Marker: Interleukin 6 (pg/mL), Interleukin 10 (pg/mL), Interleukin 1 beta (pg/mL)
Time frame: Change in Interleukin 6, Interleukin 10 and Interleukin 1 beta (ELISA) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated inflammation
Tumour Necrosis Factor alpha (pg/mL)
Time frame: Change in Tumour Necrosis Factor alpha (ELISA) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated inflammation
Marker: C-Reactive Protein (g/L)
Time frame: Change in C-Reactive Protein (immunoassay) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated lipid peroxidation
Marker: thiobarbituric acid reactive substances (μM)
Time frame: Change in thiobarbituric acid reactive substances (ELISA) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated acute iron absorption
Marker: serum iron (μmol/L)
Time frame: Change in serum iron (colorimetric analyser) from 0 and 180 minutes following supplementation
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated acute iron absorption
Marker: total iron binding capacity (μmol/L)
Time frame: Change in total iron binding capacity (colorimetric analyser) from 0 and 180 minutes following supplementation
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated iron status
Marker: serum iron (μmol/L)
Time frame: Change in serum iron (colorimetric analyser) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated iron status
Marker: total iron binding capacity (μmol/L)
Time frame: Change in total iron binding capacity (colorimetric analyser) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated iron status
Marker: Ferritin (ng/mL)
Time frame: Change in ferritin (immunoassay) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated iron status
Marker: Haemoglobin (g/dL)
Time frame: Change in haemoglobin (whole blood analyser) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated iron status
Marker: Red blood cells (M/μL)
Time frame: Change in red blood cells (whole blood analyser) from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated neurotrophic levels
Marker: Brain derived neurotrophic factor (BDNF) (ng/mL)
Time frame: Change in BDNF (ELISA) from baseline to endpoint from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated gastrointestinal effects
Subjective analysis including: Oral Iron Supplement Questionnaire
Time frame: Change in reported subjective gastrointestinal effects from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated perception of fatigue
Subjective analysis including: Visual Analogue Scale for Fatigue (VAS-F). Scores range from 0 to 100 (the higher the score the greater the level of fatigue)
Time frame: Change in VAS-F from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
To assess the influence of HydroCurc™ administration on ferrous iron supplementation associated perception of fatigue
Subjective analysis including: Fatigue Severity Scale (FSS). The total score of all answers indicates level of fatigue (a total score above ≥ 36 indicates fatigue).
Time frame: Change in FSS from day 1 compared to day 21 (baseline to midpoint), day 1 compared to day 42 (baseline to endpoint) and day 21 compared to day 42 (midpoint to endpoint)
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