Angelica acutiloba
What's the taxonomical classification of Angelica acutiloba?
Angelica acuutiloba belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Following its taxonomic hierarchy, it is placed in the class Equisetopsida and the subclass Magnoliidae. This plant is a member of the order Apiales and falls under the family Apiaceae. Within this family, it is categorized under the genus Angelica, specifically identified as the species acuutiloba.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Apiales |
| Family | Apiaceae |
| Genus | Angelica |
| Species | acutiloba |
What are the morphological characteristics of this plant?
Angelica acuutiloba has pinnately compound leaves characterized by sharply acute, serrated lobes and a hollow, ribbed stem structure. The foliage typically presents a bright green color with a delicate, feathery texture that distinguishes its specific leaf shape. Small, white flowers grow in dense, umbrella-like umbels situated at the top of the plant. These inflorescences are supported by sturdy peduncles that rise above the primary leaf canopy. The root system is robust and fleshy, providing the necessary stability and nutrient storage for this perennial species.
What is the geographical distribution of this plant?
This plant is native to the mountainous regions of western China, specifically occurring within the provinces of Gansu, Qinghai, Sichuan, and Tibet. It primarily thrives in high-altitude environments found along the edges of mountain slopes and in subalpine meadows. The species prefers cool, moist habitats that are characteristic of the Eastern Tibetan Plateau. Its specific distribution is closely tied to the unique climatic conditions and soil compositions of these high-elevation ecosystems. Consequently, finding this species requires searching within the rugged, alpine terrain of central and western China.
How is this plant cultivated?
This plant Angelica acutiloba thrives in cool, moist climates with well-drained, fertile soils rich in organic matter.
It requires full sun or partial shade to ensure robust root development and high essential oil content. Growers must provide consistent moisture to prevent drought stress, as the plant is sensitive to dry conditions. During the growing season, careful weeding and light fertilization help maintain optimal soil health.
Harvesting typically occurs when the roots have reached sufficient maturity to provide the highest medicinal value.
What parts of this plant are used medicinally?
This plant Angelica acuutiloba is used medicinally through its radix, aerial parts, flower stalks, and roots. The radix, which refers to the medicinal root, serves as the primary component in traditional formulations for promoting blood circulation. Both the root and the aerial parts are harvested to provide essential active compounds for various health applications. Additionally, the flower stalk can be utilized in specific preparations depending on the intended therapeutic effect. These diverse components collectively contribute to the plant's extensive pharmacological profile.
According to a study published by "Methods and findings in experimental and clinical pharmacology", Angelicae Radix is one of the crude ingredients of Toki-shakuyaku-san. This ingredient significantly (p < 0.01) enhanced the secretion of CINC/gro when used at concentrations of 100 micrograms/ml. The study investigated how Toki-shakuyaku-san and its ingredients affect the secretion of CINC/gro, IL-1 beta, and TNF alpha. Toki-shakuyaku-san stimulated the secretion of 17 beta-estradiol with a significance of p < 0.01. Production of CINC/gro increased significantly (p < 0.01) at concentrations of 10 and 100 micrograms/ml of Toki-shakuyaku-san. Additionally, TNF alpha production increased significantly (p < 0.05) with 10 and 100 micrograms/ml of Toki-shakuyaku-san.
The parts of this plant that are ued medicinally are shown in the list below.
- Radix
- aerial part
- flower stalk
- root
What traditional systems uses this plant?
This plant, known as Dong Quai in Traditional Chinese Medicine, has been used for centuries to treat various gynecological disorders and promote blood circulation. Practitioners historically prescribed the root to regulate menstrual cycles and alleviate symptoms of menopause. It is often integrated into complex herbal formulas to nourish the blood and strengthen the kidneys. Beyond reproductive health, historical applications include managing abdominal pain and supporting cardiovascular function. These long-standing practices form the foundation of its reputation as a vital tonic in Eastern medicinal traditions.
According to a study published by "Yakushigaku zasshi", Angelica acutiloba is prepared from its roots to produce Toki, which has been frequently used as a crude drug in traditional Chinese formulations. Historical surveys show that Yamato-Toki produced in the Yamato area, including the current Nara and Wakayama prefectures, was considered superior merchandise. A special processing method called Mekuri is used to prevent flower stalk growth and is an original method different from Chinese methods. Additionally, the traditional transplant operation of the second year has been handed down since the 1930s. The preparation also involves an original method of washing roots in hot water known as Yumomi.
The hystorical systems that uses this plant are shown in the list below.
- Traditional Chinese Medicine
What are the pharmacological activities of Angelica acutiloba?
This plant has anti-inflammatory, antioxidant, neuroprotective, cognitive enhancer, and memory improving pharmacological activities. Its bioactive compounds work to reduce systemic inflammation and neutralize harmful free radicals within the body. These properties contribute to neuroprotection by shielding neurons from oxidative stress and cellular damage. Furthermore, the plant acts as a cognitive enhancer that helps maintain mental clarity and focus. Regular application of its medicinal properties is specifically linked to memory improving effects in various neurological models.
According to a study published by "Experimental dermatology", Z-ligustilide is an active ingredient isolated from the medicinal plant Angelica acutiloba. This substance significantly rescued ultraviolet B-induced damage in normal human epidermal keratinocytes in a dosage-dependent manner. Z-ligustilide inhibited ultraviolet B-induced reactive oxygen species production and reduced the production of inflammatory mediators including IL-6, IL-8, and MCP-1 at both mRNA and protein levels. The mechanism involves the upregulation of Nrf2/HO-1 and the suppression of the NF-κB pathway by abolishing the NF-κB subunit p65 nuclear translocation and suppressing IκBα degradation. These findings suggest that Z-ligustilide may be beneficial in protecting skin from ultraviolet B exposure.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- antioxidant
- neuroprotective
- cognitive enhancer
- memory improving
What medicinal compounds this plant contains?
This plant contains the medicinal compounds butylidene phthalide, ligustilide, ferulic acid, imperatoriin, and immunostimulating polysaccharide (ATP). These bioactive substances are primarily responsible for the plant's significant pharmacological effects on the human body. Ligustilide and butylidene phthalide are known for their ability to influence cardiovascular function and blood circulation. Ferulic acid provides antioxidant properties, while imperatoriin contributes to various neuroprotective and anti-inflammatory activities. Additionally, the presence of immunostimulating polysaccharide (ATP) helps to enhance and regulate the immune system.
According to a study published by "Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials", 47 chemical compounds were identified in the essential oils from the radix of Angelica acutiloba. The total content of these identified constituents in the essential oils was 99.02%. Ligustilide is identified as a main constituent with a percentage of 22.8%. Additionally, Butylidene phthalide is a main constituent accounting for 19.5% of the composition.
The primary medicinal compounds of this plant are shown in the list below.
- Butylidene phthalide
- Ligustilide
- ferulic acid
- imperatoriin
- immunostimulating polysaccharide (ATP)
What health conditions is this plant used for?
This plant is used for treating cerebrovascular disorders, dementia, neurodegenerative disorders, upper respiratory tract infections, and inducing uterine contraction. Its bioactive compounds help improve blood circulation and protect nerve cells from damage in the brain. In the context of respiratory health, it acts to alleviate symptoms associated with various infections of the upper airway. Furthermore, the herb is traditionally applied in obstetrics to stimulate uterine contractions during labor. These diverse medicinal properties make it a significant component in many traditional herbal formulations.
According to a study published by "Journal of ethnopharmacology", Angelica acuutiloba root is used for the treatment of a variety of psychological and neurodegenerative disorders. In a model of repeated cerebral ischemia induced by 4-vessel occlusion (4-VO), the plant was studied for its potential to treat symptoms of cerebrovascular dementia. Research using a 7-day oral administration showed that the root can improve memory deficits and prevent 4-VO-induced hippocampal apoptosis. The plant also functions to upregulate the release of acetylcholine (ACh) in the dorsal hippocampus. These findings suggest the plant could be a promising therapeutic agent for cerebrovascular disorders.
The main health conditions this plant is used for are shown in the list below.
- cerebrovascular disorders
- dementia
- neurodegenerative disorders
- upper respiratory tract infections
- uterine contraction
What are the herbal preparations of this plant?
This plant is Angelica acuutiloba, a medicinal herb frequently prepared as Angelicae acuutilobae radix to treat various circulatory and gynecological conditions. Researchers often study its chemical properties using a 70% MeOH extract to isolate bioactive compounds. Beyond crude extracts, specific ether extracts are utilized to refine the therapeutic components of the root. In traditional medicine, this plant serves as a fundamental ingredient in complex formulas like Shimotsu-to and Shiunko. These preparations demonstrate the plant's versatility in both laboratory settings and classical herbalism.
According to a study published by "Journal of natural medicines", crude drug Angelicae acutilobae radix is one of the most important crude drugs in Japanese traditional medicine used mainly for the treatment of gynecological disorders. In the listing in the Japanese Pharmacopoeia XVIII, Angelicae acutilobae radix is defined as the root of Angelica acutiloba. This plant has long been produced on an industrial scale in Japan, although domestic supply has recently declined. Researchers established DNA markers using DNA sequences for the chloroplast psbA-trnH intergenic spacer and nuclear internal transcribed spacer regions to definitively identify the plant. These markers allow for the differentiation of Angelicae acutilobae radix from other Chinese medicinal Apiaceae roots.
The main herbal preparations of this plant are shown in the list below.
- 70% MeOH extract
- Angelicae acutilobae radix
- Shimotsu-to
- Shiunko
- ether extracts
What side effects this plant can have?
This plant can cause a decrease of blood pressure and increased uterine contractile activities in certain individuals. The reduction in blood pressure may lead to dizziness or lightheadedness if the effect is too pronounced. Furthermore, the stimulation of uterine contractions poses significant risks for pregnant women as it could potentially lead to miscarriage. Other possible side effects include gastrointestinal discomfort or allergic skin reactions in sensitive users. It is essential to consult a medical professional before using this herb to avoid these complications.
According to a study published by "Journal of pharmacobio-dynamics", the intraduodenal administration of 70% MeOH extract of Japanese Angelica root at 3 g/kg increased uterine contractile activities in anesthetized rabbits. The activities of this extract shifted to the aqueous layer and remained positive at a dose of 1 g/kg following fractionation with hexane and BuOH. In some animal preparations, an inhibiting effect on uterine contraction was noted after the uterotonic effect terminated. Additionally, the aqueous fraction at 40 mg/kg produced uterine contraction and a decrease of blood pressure through an i.v. route.
The main side effects this plant can have are shown in the list below.
- decrease of blood pressure
- increased uterine contractile activities
What herbs are paired with Angelica acutiloba?
This plant Angelica acuutiloba is most commonly paired with herbs such as Rehmannia glutinosa, Paeonia lactiflora, and Ligusticum chuanxiong to balance its blood-tonifying properties.
These combinations are frequently found in traditional formulas designed to nourish the blood and regulate menstrual cycles. Pairing it with warming herbs like Cinnamon bark helps to enhance its ability to improve circulation and dispel coldness in the body. Additionally, combining it with calming botanicals can help mitigate potential side effects like digestive upset or excessive heat.
Practitioners select these specific partners to harmonize the plant's potent effects within complex medicinal decoctions.