Fragrant green

Fragrant green

(Zhejiang science and Technology Bulletin - medical and health part)

[synonym] Bai Si Leng Feng, Feng Qie Xiang.

[source] it is the whole plant of Compositae with fragrant green wing stem.

[plant morphology] fragrant stem

Perennial herbs with special fragrance, 15-50 cm high. The whole plant is covered with white wool. Stems clustered, simple, unbranched. Leaves alternate, sessile, oblanceolate or linear lanceolate, 4-9 cm long and 0.6-1 cm wide, apex obtuse and slightly pointed, base extended into wings, making stem angular. The inflorescence is terminal, mostly arranged in corymbose; dioecious or heterozygous, all tubular flowers, about 0.8 cm long, yellow white. Involucre campanulate, bracts 5-Row, or 7-row, silvery white. Achenes with small glandular dots. It blooms in summer and autumn.

Born in high mountains and hills. It is distributed in Zhejiang and other places.

In addition, it is also used as medicine.

[collection] in autumn.

[chemical constituents] the whole herb contains volatile oil, glycosides, coumarin derivatives, reducing sugars, tannins and phenols.

[pharmacological effects] 1. Antitussive, expectorant and antiasthmatic effects

More than 500 cases of chronic tracheitis were treated with single prescription of pterygium aromaticum, and the effective rate was about 79%. After 1457 cases of senile chronic tracheitis were treated with various prescriptions and preparations related to pterygium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium Cymbidium cymbi. Using sulfur dioxide as cough inducing agent, the antitussive effect of total Decoction and compound preparation of Rhizoma Pteris Xiangqing on mice was not obvious, but its ethanol extract had strong antitussive effect; the expectorant effect of Rhizoma Pteris Xiangqing was weaker than that of compound preparation, and the expectorant effect of its volatile oil was better (phenol red assay in mice); the effect of total Decoction of Rhizoma Pteris Xiangqing on tracheal smooth muscle of normal guinea pigs was not constant, but it was induced by histamine The results of isolated guinea pig trachea showed that the total water decoction of pterygium odoratum could only antagonize the effect of histamine phosphate (0.1% 0.15-0.25 ml), but could not antagonize the bronchospasm when the dosage of histamine was increased. It also could not resist the contraction of tracheal smooth muscle induced by acetylcholine.

② Anti inflammatory effect

The results showed that the total water decoction of Rhizoma Pteris had inhibitory effects on Staphylococcus aureus, Staphylococcus albicans, Shigella sonnei, typhoid, paratyphoid and Escherichia coli in vitro. The antibacterial effect of the volatile part is poor, especially the volatile oil. The results showed that the ethanol extract of Eupatorium odoratum had obvious anti infective effect in vivo. The number of white blood cells increased significantly after the total decoction was used in rabbits.

① Other functions

The results showed that the ethanol extract of Cymbidium odoratum could significantly affect the activity of white hair in mice, and had sedative effect, but had no obvious analgesic effect (acetic acid induced pain method, hot plate method). The results showed that the total water decoction, urethane and pentobarbital had a significant synergistic effect on inhibiting the central nervous system, had no anticonvulsant effect, and could attenuate the respiratory stimulatory effect of Nikethamide. Intravenous injection of total Decoction of Rhizoma Pteris Xiangqing (1:1) could decrease the blood pressure and respiratory volume of anesthetized rabbits. It can obviously relieve histamine and acetylcholine. Barium chloride induced intestinal contracture. The median lethal dose (LD50) was 80.52 g / kg in mice after intragastric administration of total water decoction of Rhizoma Pteris Xiangqing (1:2). In rabbits, the righting reflex disappeared, the pain reflex was dull, the limbs were paralyzed, the patients were lethargic or stopped breathing first after intragastric administration of large amount of nicothamide. The toxicity of alcohol extract is low.

[function indications] antitussive, expectorant, antiasthmatic, anti-inflammatory. Treatment of cold, acute and chronic tracheitis, dysentery, enteritis.

[clinical application] treatment of chronic tracheitis

Every day, we can make a single syrup with 6 yuan of dried Rhizoma Cyperi, or make a compound decoction with 4 yuan of Rhizoma Cyperi, 6 yuan of Houttuynia cordata and 1 liang of rhubarb. Tablets and granules. They were taken twice in the morning and evening, with a course of 10 days, generally two courses. 2192 cases were treated with different dosage forms of single prescription and compound prescription in different seasons. After 20 days, the average total effective rate was 75.6%. The average short-term control rate was 9.1%, and the obvious effect rate was 19.5%. However, when the dosage of single syrup was increased to 9.6 yuan per day, the near control and markedly effective rate could be significantly improved. The duration of the disease has little relationship with the curative effect, but the curative effect of simple type is slightly higher than that of wheezing type, and the curative effect of severe type is inferior to that of mild type. Some cases were reexamined after 2 months and 1 year, the effective rate decreased continuously, and the recurrence rate increased gradually. The main cause of recurrence was induced by cold. The main side effect was throat dryness, which could subside without special treatment.

Chinese PinYin : Chi Jing Xiang Qing