Research Article
Antagonistic Effects of Tetramethylpyrazine on Hypoxic Respiratory Depression in Rats
Figure 4
Effects of TMP on the expression of FOS in the nuclei of the brainstem after hypoxia treatment. (a) Gray values of various FOS-positive nuclei. (b) Quantitative analysis of FOS-positive neurons in various FOS-positive nuclei. (c) Photomicrographs of representative TZ stained with FOS antibodies. vs. the hypoxia group, vs. the hypoxia group. Scale bar, 50 μm. AP, area postrema; NTS, nucleus of solitary tract; HN, hypoglossal nucleus; LRN, lateral reticular nucleus, IO, inferior olivary nucleus; FN, facial nucleus; TZ, trapezoid nucleus.
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