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Nutritional and Zinc Status of Head and Neck Cancer Patients: An Interpretive Review

Wed, Jul 3, 2013

Oral Cancer News

Source: Journal of the American College of Nutrition
Authors: Ananda S. Prasad, MD, PhD, MACN, Frances W.J. Beck, PhD, Timothy D. Doerr, MD, Falah H. Shamsa, PhD, Hayward S. Penny, MS, RD, Steven C. Marks, MD, Joseph Kaplan, MD, Omer Kucuk, MD and Robert H. Mathog, MD

 

Abstract

In this review, we provide evidence based on our studies, for zinc deficiency and cell mediated immune disorders, and the effects of protein and zinc status on clinical morbidities in patients with head and neck cancer. We investigated subjects with newly diagnosed squamous cell carcinoma of the oral cavity, oropharynx, larynx, and hypopharynx. Patients with metastatic disease and with severe co-morbidity were excluded. Nutritional assessment included dietary history, body composition, and prognostic nutritional index (PNI) determination. Zinc status was determined by zinc assay in plasma, lymphocytes, and granulocytes. Pretreatment zinc status and nutritional status were correlated with clinical outcomes in 47 patients. Assessment of immune functions included production of TH1 and TH2 cytokines, T cell subpopulations and cutaneous delayed hypersensitivity reaction to common antigens.

At baseline approximately 50% of our subjects were zinc-deficient based on cellular zinc criteria and had decreased production of TH1 cytokines but not TH2 cytokines, decreased NK cell lytic activity and decreased proportion of CD4+ CD45RA+ cells in the peripheral blood. The tumor size and overall stage of the disease correlated with baseline zinc status but not with PNI, alcohol intake, or smoking. Zinc deficiency was associated with increased unplanned hospitalizations. The disease-free interval was highest for the group which had both zinc sufficient and nutrition sufficient status.

Zinc deficiency and cell mediated immune dysfunctions were frequently present in patients with head and neck cancer when seen initially. Zinc deficiency resulted in an imbalance of TH1 and TH2 functions. Zinc deficiency was associated with increased tumor size, overall stage of the cancer and increased unplanned hospitalizations. These observations have broad implications in the management of patients with head and neck cancer.

 
The following news story is scientifically tied together with the study above; one explains the other. Please follow this link to read the study titled: 
Low intracellular zinc induces oxidative DNA damage, disrupts p53, NFκB, and AP1 DNA binding, and affects DNA repair in a rat glioma cell line

 http://oralcancernews.org/wp/?p=14853

 

* This news story was resourced by the Oral Cancer Foundation, and vetted for appropriateness and accuracy.

 

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