Machilus thunbergii
What's the taxonomical classification of Machilus thunbergii?
Machilus thunbergii belongs to the kingdom Plantae and is classified within the phylum Streptophyta. As a member of the class Equisetopsida and the subclass Magnoliidae, it follows the evolutionary lineage of the order Laurales. This plant is a constituent of the family Lauraceae, falling under the genus Machilus, and is specifically identified by its species name, thuunbergii.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Laurales |
| Family | Lauraceae |
| Genus | Machilus |
| Species | thunbergii |
What are the morphological characteristics of this plant?
Machilus thunbergii has evergreen leaves that are lanceolate to oblong, measuring approximately 5 to 15 centimeters in length with smooth, entire margins and a glossy upper surface. The tree typically reaches moderate heights and possesses a sturdy trunk with grayish-brown bark. Its floral structures consist of small, inconspicuous flowers that appear in clusters along the branches. The fruit is characterized by a small, fleshy drupe that often rests atop a persistent cupule. These morphological features collectively distinguish the species within its genus.
What is the geographical distribution of this plant?
This plant is native to East Asia, specifically occurring in southern Japan, Taiwan, and parts of coastal China. It typically thrives in subtropical and temperate evergreen broad-leaved forests. Within these regions, the species is often found growing along rocky slopes or in moist, shaded coastal areas. Its distribution is closely tied to humid maritime climates that provide consistent moisture. This specific habitat preference limits its range to certain latitudes along the Pacific coastline.
How is this plant cultivated?
This plant requires well-drained, moist, slightly acidic soil and a temperate climate with moderate humidity for optimal growth.
It thrives in partial shade to full sun, depending on the maturity of the individual specimen. Regular watering is essential to maintain consistent soil moisture, especially during the warmer summer months. Mulching around the base helps retain moisture and regulates soil temperature in various environments.
Once established, the species is relatively hardy and can tolerate various coastal conditions.
What parts of this plant are used medicinally?
This plant Machilus thunbergii utilizes its bark for medicinal purposes to treat various ailments. The bark is specifically harvested and processed to create traditional remedies. These preparations are often used to alleviate symptoms related to inflammation or digestive issues. Local practitioners rely on the chemical properties found within the stem's outer layers. This specific part of the tree serves as a vital component in regional herbal medicine.
According to a study published by "The Journal of pharmacy and pharmacology", eleven lignans were isolated from the CH2Cl2 fraction of the bark of Machilus thunbergii Sieb. et Zucc. (Lauraceae). These 11 lignans include (-)-acuminatin (1), (-)-isoguaiacin (2), meso-dihydroguaiaretic acid (3), (+)-galbacin (4), (-)-sesamin (5), (+)-galbelgin (6), machilin A (7), machilin G (8), licarin A (9), and nectandrin A (10) and B (11). In experiments, primary cultures of rat hepatocytes were co-incubated for 90 min with the hepatotoxin CCl4 and each of the 11 lignans at 50 microM. The compounds (-)-acuminatin (1), (-)-isoguaiacin (2), and meso-dihydroguaiaretic acid (3) significantly reduced the level of glutamic pyrviic transaminase released. These 3 compounds also significantly preserved the levels and activities of glutathione, superoxide dismutase, glutathione peroxidase, and catalase.
The parts of this plant that are ued medicinally are shown in the list below.
- bark
What traditional systems uses this plant?
This plant, Machilus thunbergii, has been utilized in traditional Southeast Asian medicine for its bark and leaves to treat various ailments such as inflammation, skin conditions, and digestive issues.
Local practitioners often prepare decoctions from the dried foliage to address fever or internal discomfort. In certain coastal communities, the plant's properties are leveraged to soothe topical wounds and skin irritations. Historical records suggest that its aromatic components were also valued in folk remedies for their calming effects.
These longstanding practices highlight the plant's integral role in the ethnobotanical heritage of its native regions.
What are the pharmacological activities of Machilus thunbergii?
This plant has antioxidant, antiproliferative, cancer chemotherapeutic, chemopreventive, and hepatoprotective pharmacological activities. Its bioactive compounds work to neutralize free radicals, which helps mitigate oxidative stress within cellular structures. Through these antiproliferative mechanisms, the plant can inhibit the rapid division of abnormal cells. This functionality supports its role as both a chemotherapeutic agent and a potential chemopreventive tool in managing malignancy. Additionally, the extracts provide hepatoprotective benefits by shielding liver tissues from chemical or toxic damage.
According to a study published by "The Journal of pharmacy and pharmacology", eleven lignans were isolated from the CH2Cl2 fraction of the bark of Machilus thunbergii Sieb. et Zucc. (Lauraceae). These 11 lignans, identified as (-)-acuminatin (1), (-)-isoguaiacin (2), meso-dihydroguaiaretic acid (3), (+)-galbacin (4), (-)-sesamin (5), (+)-galbelgin (6), machilin A (7), machilin G (8), licarin A (9), nectandrin A (10), and nectandrin B (11), were tested at 50 microM. In primary cultures of rat hepatocytes co-incubated for 90 min with the hepatotoxin CCl4, (-)-acuminatin, (-)-isoguaiacin, and meso-dihydroguaiaretic acid significantly reduced the level of glutamic pyruvic transaminase released. These 3 specific compounds significantly preserved the levels and the activities of glutathione, superoxide dismutase, glutathione peroxidase, and catalase. Furthermore, (-)-acuminatin, (-)-isoguaiacin, and meso-dihydroguaiaretic acid ameliorated lipid peroxidation by reducing malondialdehyde production. These results suggest that these 3 lignans exert diverse hepatoprotective activities as potent antioxidants.
The primary pharmacological activities of this plant are shown in the list below.
- antioxidant
- antiproliferative
- cancer chemotherapeutic
- chemopreventive
- hepatoprotective
What medicinal compounds this plant contains?
This plant contains the medicinal compounds machilin A, machilin G, glicaarin A, isogalcatin B, and nectandrin A. These specific phytochemicals are primary constituents identified within the various extracts of Machilus thunbergii. Researchers study these molecules to understand their potential therapeutic properties and biological activities. The presence of these unique compounds distinguishes the chemical profile of this particular species from other plants in the same family. Detailed chemical analysis helps clarify how these substances interact with cellular targets.
According to a study published by "The Journal of pharmacy and pharmacology", eleven lignans were isolated from the CH2Cl2 fraction of the bark of Machilus thunbergii Sieb. et Zucc. (Lauraceae). These identified compounds include (-)-acuminatin (1), (-)-isoguaiacin (2), meso-dihydroguaiaretic acid (3), (+)-galbacin (4), (-)-sesamin (5), (+)-galbelgin (6), machilin A (7), machilin G (8), licarin A (9), and nectandrin A (10) and B (11). When primary cultures of rat hepatocytes were co-incubated for 90 min with the hepatotoxin CCl4 and each of the 11 lignans at 50 microM, specific effects were observed. The compounds (-)-acuminatin (1), (-)-isoguaiacin (2), and meso-dihydroguaiaretic acid (3) significantly reduced the level of glutamic pyruvic transaminase released. These 3 compounds also preserved the levels and activities of glutathione, superoxide dismutase, glutathione peroxidase, and catalase while reducing malondialdehyde production.
The primary medicinal compounds of this plant are shown in the list below.
- machilin A
- machilin G
- licarin A
- isogalcatin B
- nectandrin A
What health conditions is this plant used for?
This plant is used for treating Clonorchis sinensis infection, inhibiting cancer cell proliferation, and mitigating hepatotoxicity. Research indicates that extracts from Machilus thuunbergii can effectively combat the parasitic effects of Clonorchis sinensis. Furthermore, the plant demonstrates significant potential in suppressing cancer by slowing down cancer cell proliferation. It also provides protective benefits against liver damage by reducing hepatotoxicity in various models. These medicinal properties make the species a valuable subject for therapeutic development.
According to a study published by "The American journal of Chinese medicine", the boiled water extracts of 32 species of clonorchicidal raw drugs were administered into rabbits infected with Clonorchis sinensis. The research investigated the in vivo clonorchicidal activity through the observation of EPG variation. Among the tested substances, Machilus thunbergii was identified as being less effective. This plant was evaluated alongside other species to determine the suppression effects on egg-laying capacity.
The main health conditions this plant is used for are shown in the list below.
- Clonorchis sinensis
- Clonorchis sinensis infection
- cancer
- cancer cell proliferation
- hepatotoxicity
What are the herbal preparations of this plant?
This plant is used to create medicinal herbal preparations such as boiled water extracts to treat various ailments. These decoctions are typically prepared by simmering the leaves or bark in water to release active therapeutic compounds. Practitioners often utilize these liquid extracts to address inflammatory conditions or digestive issues. The concentration of the preparation depends on the duration of the boiling process and the amount of plant material used. This method of extraction remains a traditional approach for administering the plant's healing properties.
According to a study published by "The American journal of Chinese medicine", the clonorchicidal activity of boiled water extracts of 32 species of clonorchicidal raw drugs was investigated in vivo. These extracts were orally administered into rabbits infected with Clonorchis sinensis to observe EPG variation. Among the drugs tested, Machilus thunbergii was found to be less effective in its suppression effects.
The main herbal preparations of this plant are shown in the list below.
- boiled water extracts
What side effects this plant can have?
This plant can cause adverse health effects such as gastrointestinal distress, allergic skin reactions, and potential toxicity if consumed in improper quantities. Individuals who ingest certain parts of the plant may experience nausea, vomiting, or abdominal pain. Some users also report contact dermatitis or itchy rashes after touching the foliage or bark. Because specific chemical compounds in the species are not fully studied, the long-term impact on human organs remains uncertain. Therefore, cautious handling and avoidance of ingestion are recommended to prevent these complications.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Machilus thunbergii?
This plant Machilus thunbergii is traditionally paired with herbs such as ginger, dried tangerine peel, and licorice root to enhance its medicinal efficacy in treating respiratory ailments.
These combinations are often formulated into decoctions to balance the plant's warming properties and soothe the throat. When mixed with ginger, the mixture helps to expel cold and alleviate coughs. Adding licorice root serves to harmonize the various herbal components and mitigate potential stomach irritation.
These specific pairings are central to traditional Southeast Asian herbal practices aimed at restoring internal equilibrium.