ObjectiveTo summarize the research results on the toxic mechanism and the relevant regulatory policies at home and abroad of pyrrolizidine alkaloids （PAs）， the main toxic components， in Senecionis Scandentis Herba， thereby providing insights into the clinical use and scientific regulation of Senecionis Scandentis Herba. MethodsMultiple Chinese and English databases including PubMed， ScienceDirect， Elsevier， China national knowledge infrastructure （CNKI）， Wanfang Data， and VIP were searched， with "Senecio，" "PSenecio scandens，" and "pyrrolizidine alkaloids" as search terms. The relevant articles published from 1959 to 2025 were retrieved and analyzed， and 79 articles were finally selected for review. ResultsThe chemical components of Senecionis Scandentis Herba include alkaloids， flavonoids， volatile oils， sesquiterpenes， jacaranone derivatives， and organic acids， among which alkaloids are the most toxic components， followed by jacaranone derivatives. PAs are metabolized into highly active pyrrole derivatives in the liver， which can cause serious adverse reactions such as sinusoidal obstruction syndrome and DNA damage. The content of PAs varies significantly due to the origin， harvest period， and medicinal parts. There have been reports of clinical liver injury caused by preparations containing Senecionis Scandentis Herba， and some preparations have a daily intake of PAs exceeding the international safety threshold. Currently， international organizations have set limited standards for PAs， while China only controls the content of adonifoline， and the supervision is not yet perfect. ConclusionAlthough Senecionis Scandentis Herba has medicinal value， its PAs have significant toxicological properties. This is a problem that cannot be ignored and needs to be overcome in the use of Senecionis Scandentis Herba. Therefore， it is necessary to strengthen the quality control of raw materials， establish a more comprehensive limited standard for PAs， and optimize the medication strategy in combination with traditional Chinese medicine theory to ensure the safety of clinical medication.

ObjectiveTo summarize the research results on the toxic mechanism and the relevant regulatory policies at home and abroad of pyrrolizidine alkaloids （PAs）， the main toxic components， in Senecionis Scandentis Herba， thereby providing insights into the clinical use and scientific regulation of Senecionis Scandentis Herba. MethodsMultiple Chinese and English databases including PubMed， ScienceDirect， Elsevier， China national knowledge infrastructure （CNKI）， Wanfang Data， and VIP were searched， with "Senecio，" "PSenecio scandens，" and "pyrrolizidine alkaloids" as search terms. The relevant articles published from 1959 to 2025 were retrieved and analyzed， and 79 articles were finally selected for review. ResultsThe chemical components of Senecionis Scandentis Herba include alkaloids， flavonoids， volatile oils， sesquiterpenes， jacaranone derivatives， and organic acids， among which alkaloids are the most toxic components， followed by jacaranone derivatives. PAs are metabolized into highly active pyrrole derivatives in the liver， which can cause serious adverse reactions such as sinusoidal obstruction syndrome and DNA damage. The content of PAs varies significantly due to the origin， harvest period， and medicinal parts. There have been reports of clinical liver injury caused by preparations containing Senecionis Scandentis Herba， and some preparations have a daily intake of PAs exceeding the international safety threshold. Currently， international organizations have set limited standards for PAs， while China only controls the content of adonifoline， and the supervision is not yet perfect. ConclusionAlthough Senecionis Scandentis Herba has medicinal value， its PAs have significant toxicological properties. This is a problem that cannot be ignored and needs to be overcome in the use of Senecionis Scandentis Herba. Therefore， it is necessary to strengthen the quality control of raw materials， establish a more comprehensive limited standard for PAs， and optimize the medication strategy in combination with traditional Chinese medicine theory to ensure the safety of clinical medication.

This study was aimed to observe the antipyresis and cholagogue effect of theFructus Gardeniae-Fructus Forsythiaeherb couple in order to explore the possible pharmacodynamic mechanism. Dry yeast suspension was subcutaneously injected into the back of rat to establish the fever model. The freeze-dried powders ofF. Gardeniae,F. Forsythiae, andF. Gardeniae-F. Forsythiaeherb couple were prepared. They were dissolved in the water for intragastric administration. SD rats were randomly divided into the normal group, model group, positive control group and Chinese medicine group. The Chinese medicine group was subdivided into the group ofF. Gardeniae,F. Forsythiae, andF. Gardeniae-F. Forsythiaeherb couple. The concentration of herbal water extract was 10 mL·kg-1 (which equaled to 3 g·kg-1 of a single crude herb). The concentration of positive control was 10 mL·kg-1. Intragastric administration of equal amount of normal saline was given to the blank group and the model group. Except rats in the normal group, rats in other groups were subcutaneously injected with 10 mL·kg-1 of 15% dry yeast suspension on the back of to establish the fever model. Electronic thermometer was used to record the body temperature of rats at 0, 1, 4, 5, 6, 7 and 8 h after the injection, respectively. Meanwhile, bile was collected from 1-1, 1-2, 2-4, 4-6, 6-8, 8-12, 12-24 h, respectively. Observation was given on changes of body temperature and bile amount of rat. The results showed thatF. Gardeniae,F. Forsythiae, andF. Gardeniae- F. Forsythiaeherb couple had certain effect to reduce the body temperature of rats. The temperature-reducing effect of the combination of both herbs was better than a single herb. TheF. Gardeniae -F. Forsythiae herb couple can reduce the body temperature of fever rat (P < 0.05, orP < 0.01). It had a little effect on the body temperature of normal rat. TheF. Gardeniae - F. Forsythiaeherb couple can promote the bile secretion, which was better than the single using of F. Gardeniae (P < 0.05). It was concluded that theF. Gardeniae - F. Forsythiaeherb couple had better temperature-reducing effect than the using of a single herb; however, there was no significant difference. But it had obvious effect on the promotion of bile secretion, which indicated the strengthening of cholagogue effect.

OBJECTIVEQingkailing injection (QKLI), Jinnaduo injection (JNDI), Shuxuetong injection (SXTI), Shenmai injection (SMI) and Kangai injection (KAI) are widely used in China. To predict the herb-drug interactions in clinical application, they were evaluated for their in vitro inhibition effect on CYP3A in rat liver microsomes.

METHODThe rat liver microsomes were incubated with different doses of 5 kinds of traditional Chinese medicine injections (TCMIs) in the present of testosterone, a specific substrate of CYP3A. 6beta-hydroxytestosterone, the metabolite of testosterone, was monitored by HPLC to compare the inhibition effect of 5 TCMIs on CYP3A in rat liver microsomes. Ketoconazole was used as a positive control.

RESULT10% QKLI reduced the formation of 6beta-hydroxytestosterone by approximately 93.0%, which is more significant than other four TCMIs. The half maximal inhibitory concentration (IC50) and the enzyme-inhibitor constant K(i) were 1.0% and 0.7% respectively.

CONCLUSIONQKLI showed much stronger inhibition activity against CYP3A, comparing to other 4 TCMIs. The results revealed that QKLI may be involved in herb-drug interactions by inhibition of CYP3A.

Animals ; Cytochrome P-450 CYP3A Inhibitors ; Injections ; Male ; Medicine, Chinese Traditional ; Microsomes, Liver ; drug effects ; enzymology ; Rats ; Rats, Sprague-Dawley