text: 21717156_3	METHODS: Forty Wistar rats were randomly divided into five groups (8 per group): the sham-operated group, model group, Radix Platycodon group, Flos Lonicera and Fructus Forsythia (LF) group, and Radix Platycodon, Flos Lonicera and Fructus Forsythia combination (PLF) group, using a random number table.