Influence of different lipid emulsions on specific immune cell functions in head and neck cancer patients receiving supplemental parenteral nutrition: An exploratory analysis.

Authors:

Francesca Candiloro Valeria Borioli Giovanna Borsellino Mario Picozza Raul Pellini Emanuele Cereda Francesca Gargano Marilisa Caraccia Maria Teresa Nardi Luisa Bellu Luca Tondulli Ilaria Imarisio Emma Pozzi Paolo Pedrazzoli Riccardo Caccialanza Luca Battistini

Nutrition 2021 Jan 30;86:111178. Epub 2021 Jan 30.

Neuroimmunology Unit, IRCCS Fondazione Santa Lucia, Rome, Italy. Electronic address:

Objectives: The effect of diet on immune responses is an area of intense investigation. Dietary lipids have been shown to differently influence and fine-tune the reactivity of immune cell subsets, thus potentially affecting clinical outcomes. Patients with head and neck squamous cell carcinoma face malnutrition, due to swallowing impairment related to the tumor site or to treatment sequalae, and may need supplemental parenteral nutrition (SPN) in addition to oral feeding when enteral nutrition is not feasible. Additionally, immune depression is a well-known complication in these patients. Parenteral nutrition (PN) bags contain amino acids, minerals, electrolytes and mostly lipids that provide calories in a concentrated form and are enriched with essential fatty acids. The aim of this study was to investigate multiple parameters of the immune responses in a cohort of patients with head and neck squamous cell carcinoma undergoing supplemental PN with bags enriched in ω-3 or ω-9 and ω-6 fatty acids.

Methods: To our knowledge, this was the first exploratory study to investigate the effects of two different PN lipid emulsions on specific immune cells function of patients with advanced head and neck squamous carcinoma. ω-3-enriched fish-oil-based- and ω-6- and ω-9-enriched olive-oil-basedSPN was administered to two groups of patients for 1 wk in the context of an observational multicentric study. Polychromatic flow cytometry was used to investigate multiple subsets of leukocytes, with a special focus on cellular populations endowed with antitumor activity.

Results: Patients treated with olive-oil-based PN showed an increase in the function of the innate (natural killer cells and monocytes) and adaptive (both CD4 and CD8 cells) arms of the immune response.

Conclusion: An increase in the function of the innate and adaptive arms of the immune response may favor antitumoral responses.

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January 2021

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