The epidermal barrier efficacy is determined by the physicochemical properties of the epidermal lipid matrix, among which ω-6 essential fatty acids (EFAs) play a key role. Inversely, the ω-3 EFAs are not found in the epidermis. For patients receiving lipid-containing parenteral nutrition (LCPN), the improvement of the epidermal barrier through the infusion of most appropriate intravenous fat emulsions (IVFE) could have many applications in clinical nutrition, mainly limiting water loss in patients receiving long-term LCPN and help in electrolyte and water balance. The objective of this interventional clinical trial is to evaluate the epidermal barrier function in patients receiving long-term LCPN comparing two compositions of IVFE: (i) soybean oil (SO)-based IVFE (Medialipide) or (ii) fish oil (FO)-containing IVFE (Lipidem). Epidermal barrier function will be assessed through the transepidermal water loss (TEWL) measurement on the skin surface, a validated marker of the epidermal barrier efficacy. The two IVFE (SO-based or FO-containing) will be compared using a randomized double blind crossover design, using patients as their own control. Each IVFE will be allocated for a 3-month period, allowing sufficient timeframe for epidermal complete renewal. Patient's epidermal and red blood cell EFA profile will be determinate in order to facilitate result interpretation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
13
The soybean oil (SO)-based IVFE will be allocated for a 3-month period, allowing sufficient timeframe for epidermal complete renewal.
The fish oil (FO)-containing IVFE will be allocated for a 3-month period, allowing sufficient timeframe for epidermal complete renewal.
Hospices Civils de Lyon
Lyon, France
Centre Hospitalier Lyon Sud
Pierre-Bénite, France
Measurement of the transepidermal water loss (TEWL).
Measurement will be performed in a horizontal plane on the dominant volar forearm, which is the reference site for TEWL measurement because of its low content of sebaceous glands and pilosity. The TEWL will be measured using the latest generation of closed chamber system, combined to a vapor water condenser (Aquaflux 200®), which offers the advantage of a reduced TEWL value sensitivity to ambient humidity and temperature during measurement.
Time frame: at Day 0 (at recruitment time)
Measurement of the transepidermal water loss (TEWL).
Measurement will be performed in a horizontal plane on the dominant volar forearm, which is the reference site for TEWL measurement because of its low content of sebaceous glands and pilosity. The TEWL will be measured using the latest generation of closed chamber system, combined to a vapor water condenser (Aquaflux 200®), which offers the advantage of a reduced TEWL value sensitivity to ambient humidity and temperature during measurement.
Time frame: at Day 90
Measurement of the transepidermal water loss (TEWL).
Measurement will be performed in a horizontal plane on the dominant volar forearm, which is the reference site for TEWL measurement because of its low content of sebaceous glands and pilosity. The TEWL will be measured using the latest generation of closed chamber system, combined to a vapor water condenser (Aquaflux 200®), which offers the advantage of a reduced TEWL value sensitivity to ambient humidity and temperature during measurement.
Time frame: at Day 180
Determination of erythrocyte fatty acids ω-6
Essential fatty acid red blood cell monitoring more properly reflect the global membrane fatty acid composition of the body. Monitoring will be achieved at biochemistry laboratory of recruiting centers on a blood sample.
Time frame: at Day 0
Determination of erythrocyte fatty acids ω-3
Essential fatty acid red blood cell monitoring more properly reflect the global membrane fatty acid composition of the body. Monitoring will be achieved at biochemistry laboratory of recruiting centers on a blood sample.
Time frame: at Day 0
Determination of erythrocyte fatty acids ω-6
Essential fatty acid red blood cell monitoring more properly reflect the global membrane fatty acid composition of the body. Monitoring will be achieved at biochemistry laboratory of recruiting centers on a blood sample.
Time frame: at Day 90
Determination of erythrocyte fatty acids ω-3
Essential fatty acid red blood cell monitoring more properly reflect the global membrane fatty acid composition of the body. Monitoring will be achieved at biochemistry laboratory of recruiting centers on a blood sample.
Time frame: at Day 90
Determination of erythrocyte fatty acids ω-6
Essential fatty acid red blood cell monitoring more properly reflect the global membrane fatty acid composition of the body. Monitoring will be achieved at biochemistry laboratory of recruiting centers on a blood sample.
Time frame: at Day 180
Determination of erythrocyte fatty acids ω-3
Essential fatty acid red blood cell monitoring more properly reflect the global membrane fatty acid composition of the body. Monitoring will be achieved at biochemistry laboratory of recruiting centers on a blood sample.
Time frame: at Day 180
Determination of Stratum corneum (SC) ω-3
Stratum corneum lipids will be collected using the minimally invasive and painless "Tape Stripping" method, which consists of applying a scotch on the skin. Quantitative and qualitative composition of the SC lipid matrix will be determined using high-performance thin-layer chromatography.
Time frame: at Day 0
Determination of Stratum corneum (SC) ω-6
Stratum corneum lipids will be collected using the minimally invasive and painless "Tape Stripping" method, which consists of applying a scotch on the skin. Quantitative and qualitative composition of the SC lipid matrix will be determined using high-performance thin-layer chromatography.
Time frame: at Day 0
Determination of Stratum corneum (SC) ω-3
Stratum corneum lipids will be collected using the minimally invasive and painless "Tape Stripping" method, which consists of applying a scotch on the skin. Quantitative and qualitative composition of the SC lipid matrix will be determined using high-performance thin-layer chromatography.
Time frame: at Day 90
Determination of Stratum corneum (SC) ω-6
Stratum corneum lipids will be collected using the minimally invasive and painless "Tape Stripping" method, which consists of applying a scotch on the skin. Quantitative and qualitative composition of the SC lipid matrix will be determined using high-performance thin-layer chromatography.
Time frame: at Day 90
Determination of Stratum corneum (SC) ω-3
Stratum corneum lipids will be collected using the minimally invasive and painless "Tape Stripping" method, which consists of applying a scotch on the skin. Quantitative and qualitative composition of the SC lipid matrix will be determined using high-performance thin-layer chromatography.
Time frame: at Day 180
Determination of Stratum corneum (SC) ω-6
Stratum corneum lipids will be collected using the minimally invasive and painless "Tape Stripping" method, which consists of applying a scotch on the skin. Quantitative and qualitative composition of the SC lipid matrix will be determined using high-performance thin-layer chromatography.
Time frame: at Day 180
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