Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Protection against oral and gastrointestinal diseases: Importance of dietary nitrate intake, oral nitrate reduction and enterosalivary nitrate circulation.
AU - Duncan, Callum
AU - Li, Hong
AU - Dykhuizen, Roelf
AU - Frazer, Rennie
AU - Johnston, Peter
AU - MacKnight, Gillian
AU - Smith, Lorna
AU - Lamza, Kathryn
AU - McKenzie, Hamish
AU - Batt, Les
AU - Kelly, Denise
AU - Golden, Michael
AU - Benjamin, Nigel
AU - Leifert, Carlo
PY - 1997/12
Y1 - 1997/12
N2 - Over the last 20 years, dietary nitrate has been implicated in the formation of methemoglobin and carcinogenic nitrosamines in humans. This has led to restrictions of nitrate and nitrite levels in food and drinking water. However, there is no epidemiological evidence for an increased risk of gastric and intestinal cancer in population groups with high dietary vegetable or nitrate intake. A reevaluation of our currently very negative perception of dietary nitrates comes from recent research into the metabolism and enterosalivary circulation of nitrate in mammals. These studies showed that nitrate is converted to nitrite in the oral cavity that then “fuels” an important mammalian resistance mechanism against infectious diseases. Moreover, there is now evidence that the conversion of nitrate into oxides of nitrogen prevents the formation carcinogenic nitrosamines.
AB - Over the last 20 years, dietary nitrate has been implicated in the formation of methemoglobin and carcinogenic nitrosamines in humans. This has led to restrictions of nitrate and nitrite levels in food and drinking water. However, there is no epidemiological evidence for an increased risk of gastric and intestinal cancer in population groups with high dietary vegetable or nitrate intake. A reevaluation of our currently very negative perception of dietary nitrates comes from recent research into the metabolism and enterosalivary circulation of nitrate in mammals. These studies showed that nitrate is converted to nitrite in the oral cavity that then “fuels” an important mammalian resistance mechanism against infectious diseases. Moreover, there is now evidence that the conversion of nitrate into oxides of nitrogen prevents the formation carcinogenic nitrosamines.
KW - Diet
KW - gastric cancer
KW - gastroenteritis
KW - methemoglobinemia
KW - nitrate
KW - nitrite
KW - nitric oxide
KW - N-nitroso compounds
U2 - 10.1016/S0300-9629(97)00023-6
DO - 10.1016/S0300-9629(97)00023-6
M3 - Journal article
VL - 118
SP - 939
EP - 948
JO - Comparative Biochemistry and Physiology Part A: Physiology
JF - Comparative Biochemistry and Physiology Part A: Physiology
IS - 4
ER -