Astragal. Laniflorous astragal herb
Specification & Spread
Laniflorous astragal herb — herba astragali dasyanthi
Laniflorous astragal — astragalus dasyanthus pall.
Bean family — fabaceae
Other names: astragalus, neck mould.
It is a perennial herbaceous plant with a tap-headed root.
The stems are numerous, ascending, 30-40 cm tall.
The leaves are up to 20 cm long, alternate, unpaired, pinnatural, with 21-27 elliptical or oblong-elliptical leaves 6-20 mm long. The flowers are in the number of 10-20 in dense capitate inflorescences on long peduncles, with a light yellow moth corolla and five-leaved bell-shaped grey-green calyx. The fruit is swollen, ovoid or elliptical, leathery bean 10-12 mm long, with a spout 2-3 mm long. All parts of the plant, except the corolla, are pubescent with whitish, bulged hairs.
It blooms in May - June. The fruits ripen in July - August.
Spreading. It is Black Sea species. It grows in the south of the European part of Russia, in Ukraine and in Moldova. In the east comes to the Volga.
Habitat. Mostly steppe species, it grows in open places on the slopes of beams and river valleys. In the forest-steppe zone is less common. To moisture and soil undemanding, it can not withstand moisture and shading. It quickly disappears with intensive grazing, mowing tolerates satisfactorily.
The chemical composition of Astragal
In the laniflorous astragal herb contained:
- triterpene saponins - daziantozidy, dazianthogenin derivatives (cycloartan series);
- flavonoids (kaempferol, quercetin, isorhamnetin, astragalozide);
- amino acids;
- vitamins, including alpha-tocopherol (vitamin E).
Astragal refers to plants that accumulate selenium (up to 1.5 mg%).
The plant contains a variety of macro-and micronutrients (calcium, silicon, aluminum, iron, magnesium, cobalt, zinc, copper, manganese, molybdenum, chromium).
Harvesting and storage of raw materials
Harvesting. The herb is cut in the phase of mass flowering to the formation of fruits at a height of 5-7 cm from the soil surface, leaving the rough, almost leafless base of the stems. The preparation is carried out before powdery mildew and rust appear on the plants. Security measures. The raw materials of laniflorous astragal in nature should be extremely reduced, as the species needs protection.
Drying. It is dried quickly in attics or in well-ventilated sheds, under canopies, spread out 3-5 cm on paper or cloth, often turning over. The artificial drying is allowed at a temperature not higher than 55 ºС.
External signs of raw materials
The raw materials are represented by flowering shoots.
The stems are ribbed, up to 3 mm thick, hollow. The leaves are 12–20 cm long, unpaired, pinnatal, with long petioles and 12–14 pairs of oblong-elliptical or elliptical leaflets and triangular-lanceolate awl-pointed, whitish stipules about 15 mm long and 6 mm wide. The flowers are of 10-20 are collected in dense capitate brushes on a long (up to 15 cm) peduncle. The calyx is bell-shaped, with five styloid linear teeth.
Corolus moth, stamens 10, 9 of which grow together at the base, 1 - free. All parts of the material are densely pubescent with soft, long, whitish hairs, especially the calyx. The colour of the stems is brownish grey, the leaves are greyish green, the flowers are yellow. The smell is peculiar and weak.
The taste is sweet.
Milled raw materials
The pieces of stems, leaves and flowers of various shapes are ranging in size from 1 to 8 mm. An unacceptable admixture of the herb of erianthous milk vetch (Astragalus pubiflorus DC.), which has a reddish hair, flowers 4-8 in the racemes on very short peduncles (no more than 2 cm), in the flowers pubescent calyx, flag and wings, and the boat is bare.
Properties and application
Pharmacotherapeutic group. Antihypertensive, vasodilating and sedative agent.
The pharmacological properties of astragal
The biologically active substances contained in laniflorous astragal provide a wide range of pharmacological effects.
Astragal preparations possess:
- cardiotonic and
- diuretic properties.
Along with the sedative and hypotensive effect of laniflorous astragal
- gives effects similar to cardiotonic glycosides,
- and also dilates the coronary vessels, kidney vessels
- increases diuresis.
In the experimental study of astragal noted:
- an increase in the duration of action of drugs and hypnotics,
- improvement of cerebral circulation and tissue respiration of the brain. The hypotensive effect is also provided by the vasodilating properties of astragalus and an increase in diuresis due to improved renal hemodynamics, and an increase in glomerular filtration.
The coronary expansion and cardiac contractility properties of astragal against the background of a slower heart rate improve overall and organ hemodynamics.
Astragal contains a unique natural complex of tocopherols and selenium, necessary for muscular activity. This complex is used in clinical practice for various muscular dystrophies. In addition, astragalus normalizes the function of blood coagulation and anti-coagulation systems.
Application of astragal
Laniflorous astragal is used in the initial forms of hypertensive disease.
When treating astragal infusion in patients, its well-being improved significantly, its blood pressure decreased, headache, dizziness, tinnitus, flushing to the head, insomnia, interruptions and heart pain disappeared.
Under the influence of astragal, microcirculation was improved. Improvement of cerebral circulation in hypertensive patients was accompanied by a decrease in blood pressure in the central retinal artery and in the temporal artery.
In the treatment of patients with coronary heart disease by astragal, in addition to hypotensive and cardiotonic properties, its ability to inhibit vasomotor regulatory centers was taken into account.
The positive effect of astragal on the blood coagulation system is reflected in an increase in blood clotting time, an increase in plasma tolerance to heparin, an increase in free heparin, and normalization of fibrinolysis.
When treating patients with chronic circulatory failure with heart defects, dystrophic processes in the myocardium, venous pressure decreased, diuresis increased, swelling, dyspnea, cyanosis decreased.
The infusion of laniflorous astragal when it is applied topically has a wound healing and epithelial effect.
The infusion is applied with:
- stomatitis and
- periodontal disease in the form of gargles and for oral administration.
Complications and side effects in the appointment of laniflorous astragal were not observed.