TY - JOUR
T1 - Zinc and nitric oxide synthase inhibitor L-NAME attenuate NPY-induced feeding in mice
AU - Cheng, Chao Wen
AU - Lin, Pi Yao
AU - Chen, Ming Der
PY - 2000
Y1 - 2000
N2 - The influences of zinc (Zn) and the nitric oxide synthase (NOS) inhibitor L-NAME on peripheral neuropeptide Y (NPY)-induced feeding in mice were investigated. Male mice received NPY (200 ng/d/mouse subcutaneously) and were separated into four groups based on cotreatments (with or without Zn [0.1 mg/mL]) and with or without L-NAME [0.2 mg/mL]) administered in drinking water for 10 d. A control group that received saline injection was also studied. The results showed that NPY, with or without any studied chemicals, did not affect body weight gain or body fat content. However, the mice that were administered NPY alone had increased energy intakes, higher serum triglyceride and free fatty acid, and lower serum glucose than saline- injected controls. NPY-treated mice that were given Zn and L-NAME cotreatments had compatible results of determined variables in comparison with control mice. This study showed that Zn and L-NAME attenuated NPY- mediated feeding and selected serum variables in mice. However, the mechanisms of the interactions among NPY, Zn and NOS, and their effects on appetite regulation, remain to be elucidated.
AB - The influences of zinc (Zn) and the nitric oxide synthase (NOS) inhibitor L-NAME on peripheral neuropeptide Y (NPY)-induced feeding in mice were investigated. Male mice received NPY (200 ng/d/mouse subcutaneously) and were separated into four groups based on cotreatments (with or without Zn [0.1 mg/mL]) and with or without L-NAME [0.2 mg/mL]) administered in drinking water for 10 d. A control group that received saline injection was also studied. The results showed that NPY, with or without any studied chemicals, did not affect body weight gain or body fat content. However, the mice that were administered NPY alone had increased energy intakes, higher serum triglyceride and free fatty acid, and lower serum glucose than saline- injected controls. NPY-treated mice that were given Zn and L-NAME cotreatments had compatible results of determined variables in comparison with control mice. This study showed that Zn and L-NAME attenuated NPY- mediated feeding and selected serum variables in mice. However, the mechanisms of the interactions among NPY, Zn and NOS, and their effects on appetite regulation, remain to be elucidated.
KW - Adult mice
KW - Appetite
KW - Energy intake
KW - Neuropeptide Y
KW - Nitric oxide synthase
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=0033941698&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033941698&partnerID=8YFLogxK
U2 - 10.1385/BTER:75:1-3:21
DO - 10.1385/BTER:75:1-3:21
M3 - Article
C2 - 11051593
AN - SCOPUS:0033941698
SN - 0163-4984
VL - 75
SP - 21
EP - 27
JO - Biological Trace Element Research
JF - Biological Trace Element Research
IS - 1-3
ER -