Red back leaf

Red back leaf

(Guangxi Chinese herbal medicine)

[synonyms] hongbeiniang, hongmaoding (Guangxi Chinese herbal medicine), hongluoskirt (Guangzhou Air Force Manual of commonly used Chinese herbal medicine).

[source] it is the root and leaf of Euphorbiaceae.

[plant morphology] kenaf stem of Hongbei mountain

Shrubs or small trees with hairy twigs. Leaves alternate, broad cordate or ovoid, 6-15 cm long, 4-10 cm wide, apex long acuminate. The base is light cordate or nearly truncated, with 3 basal veins, red glands and 2 linear appendages at the base, green above, glabrous below, light green and reddish below. Tender leaves purplish red with irregular serrate margin; petiole 7 cm long, shorter to upper part, turning red purple with age. Male inflorescence axillary, racemose, 7-10 cm long, bracts lanceolate, axillary 4-8 flowers, sepals 2-3, stamen 8; female inflorescence shorter, terminal, flowers dense, sepals 6-8, lanceolate, ovary ovate, style 3. Capsule globose, covered with grayish white hairs, 8-10 mm in diam. The flowering period is from March to June.

It grows in the bush of hillside and wasteland. It is distributed in the middle, Southeast and South China of China.

[collection] all year round.

[chemical constituents] the roots contain a lot of alkaloids and phenolic substances. The leaves contain flavonoid glycosides, phenols, amino acids, organic acids and sugars.

(1) antitussive and expectorant effects

Mice taking oral root decoction 175 g / kg had a significant antitussive effect (ammonia spray). The expectorant effect is also significant (phenol red method in mice).

② Effects on smooth muscle

The root decoction had no effect on bronchodilation (isolated lung perfusion of guinea pig), but had obvious anti acetylcholine effect in isolated ileum of rabbit.

③ Antibacterial action

In vitro test, only Staphylococcus aureus and Staphylococcus albicans were slightly inhibited.

[nature and taste] Guangxi Chinese herbal medicine: "sweet in taste, cool in nature. "

[functions and indications] ① Guangxi Chinese herbal medicine: "detoxification, dehumidification, hemostasis, treatment of dysentery, urinary calculi or inflammation, blood collapse, leucorrhea, rubella, scabies, tinea pedis, caries pain, traumatic bleeding. "

② Guangzhou Air Force's "manual of commonly used Chinese herbal medicine": "treating lumbocrural pain. "

[usage and dosage] oral administration: root: decoction, 0.5-1 Liang. External use: leaf: fried, washed or tamped.

[clinical application] treatment of chronic tracheitis

Use 3 liang of fresh red back leaf root, fry it twice (about 3 hours each time), mix and concentrate the liquid into 30 ml, take 15 ml each time, twice a day, 10 days as a course of treatment. 115 cases were treated. After a course of treatment, 27 cases were controlled, 41 cases were markedly effective, and 25 cases were improved. The total effective rate was 80.9%. The curative effect of two courses of treatment can be improved.