Uncaria angustifolia

Uncaria angustifolia

(list of medicinal plants in Guangxi)

[synonyms] baiyeteng (ACTA Pharmaceutica Sinica (9): 5611963), baimalianan, niujiaojun, duanchangcao (Guangxi Medicinal Plant List), damianxiao, banjianiu, baiduzong, baijiangteng (Yunnan Chinese herbal medicine).

[source] the roots of Uncaria angustifolia (Asclepiadaceae).

[plant morphology] Uncaria angustifolia

Climbing shrubs. Leaves opposite; leathery; oblong or elliptic, 9-14 cm long, 3-5.5 cm wide, base broadly cuneate or suborbicular, apex obtuse or suborbicular, apiculate, entire, glabrous above, glabrous below when young, glabrous when old; stipitate. Flowers terminal or axillary, in loose cymes; corolla yellow, 5-lobed, lobes narrowly lanceolate, ca. 8 mm long; corona with scales 5, clavate. Follicles terete, tapering from middle to top, ca. 10 cm long, hard, 1-1.5 cm in diameter. Seeds black, oblong, ca. 1 cm long, compressed, apically hairy. The flowering period is May.

It grows on sunny slopes and climbs on other trees. It is distributed in Guangdong and Guangxi. Guizhou, Yunnan and other places.

[chemical constituents] the root contains cardiotonic glycoside and leucophylloside.

[pharmacological action] the glycosides from the roots of Ampelopsis grossedentata from Yunnan Province can stop the frog heart from contracting, strengthen the contractility of rabbit heart and isolated guinea pig heart, slow down the heart rate, then lead to arrhythmia of heart rate, and finally stop in systole. Guinea pig ECG showed typical cardiotonic effect. The minimum lethal dose (pigeon method) was 2.914 ± 0.37 mg / kg, which was close to 2.829 mg / kg and 0.023 mg / kg of scutellarin. After 24 hours, the average accumulation rate (pigeon) was 32.5%, which was lower than digitalis, but higher than helianthin G.

[nature and taste] Yunnan Chinese herbal medicine: "light, flat, toxic. "

Functions and indications: promoting blood circulation, detumescence and analgesia. Treatment of falls, injuries, fractures, lumbago, abdominal pain, edema.

① Yunnan Chinese herbal medicine: "Shujin Huoluo, detumescence and analgesia. "

② Treatment of edema. (ACTA Pharma Sinica 10 (9): 5611963)

③ "Guangxi medical plant directory": "divergence, lactation. "

[usage and dosage] take orally: grind powder, 0.5-1 min; or soak in wine.

[optional prescription] for traumatic injury, fracture, low back pain and abdominal pain: half a rack of ox root grind powder, one point for each; or two yuan for each, two Jin of wine, five ml for each, three times a day. (Yunnan Chinese herbal medicine)