Stephania japonica
What's the taxonomical classification of Stephania japonica?
Stephania japonica belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida, it is further categorized under the subclass Magnoliidae and falls into the order Ranunculales. The plant is a member of the family Menispermaceae, specifically situated within the genus Stephania, with its unique identity defined by the species japonica.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Ranunculales |
| Family | Menispermaceae |
| Genus | Stephania |
| Species | japonica |
What are the morphological characteristics of this plant?
Stephania japonica has a tuberous, globose caudex that serves as the primary storage organ for water and nutrients. From this central base, thin, twining stems emerge to climb surrounding vegetation using their climbing habit. The leaves are typically simple and ovate with entire margins and a smooth texture. Small, inconspicuous flowers emerge from the stems, often appearing in clusters. The overall structure is characterized by its succulent root system and delicate, trailing foliage.
What is the geographical distribution of this plant?
This plant is native to the East Asian region, specifically found throughout Japan, China, and Korea. It primarily inhabits temperate zones where it thrives in varied environments such as forest edges and rocky slopes. Within these territories, the species can be found across diverse elevations ranging from coastal lowlands to mountainous areas. Its distribution is closely linked to the availability of moist, well-drained soils common in these subtropical and temperate climates. Localized populations often cluster in areas where sunlight can filter through canopy layers.
How is this plant cultivated?
This plant thrives when grown in well-draining, fertile soil in a location that receives full sun to partial shade.
To ensure healthy development, provide consistent moisture while avoiding waterlogged conditions that can lead to root rot. Regular fertilization during the growing season will support its vigorous climbing habit and lush foliage. Pruning may be necessary to control its spread and encourage dense growth along support structures like trellises or fences.
As a vigorous grower, it requires adequate space to prevent it from overtaking surrounding vegetation.
What parts of this plant are used medicinally?
This plant Stephania japonica is utilized medicinally through its aerial parts, which specifically include the leaves and the vines. The leaves are often harvested to prepare infusions or decoctions for their therapeutic properties. Similarly, the long, climbing vines are collected and processed for various traditional remedies. These components are valued in herbal medicine for their unique chemical profiles. By using the entire above-ground structure, practitioners can access the full range of bioactive compounds available in the species.
According to a study published by "Journal of natural products", hasubanan alkaloids were isolated from the leaves of the North Queensland rainforest vine Stephania japonica. This study identified two new alkaloids, labeled 1 and 2, alongside six known hasubanan alkaloids, 3-8, and one morphinane alkaloid, 9. These alkaloids demonstrated affinity for the human delta-opioid receptor with IC50 values ranging from 0.7 to 46 microM. While the compounds were inactive against kappa-opioid receptors, they showed a similar potency against the micro-opioid receptor.
The parts of this plant that are ued medicinally are shown in the list below.
- aerial parts
- leaves
- vines
What traditional systems uses this plant?
This plant, known as Stephanis japonica, was traditionally used in East Asian folk medicine to treat various ailments such as inflammation, skin conditions, and digestive issues.
Historical records suggest that different parts of the vine were prepared as decoctions or topical poultices to alleviate physical discomfort. Some indigenous practices utilized the plant's properties to manage swelling or to promote healing in minor wounds. These traditional applications often relied on the specific chemical compounds found within its roots and stems.
Such long-standing medicinal uses provided a foundation for understanding the plant's potential bioactive qualities in a cultural context.
What are the pharmacological activities of Stephania japonica?
This plant has analgesic, anti-inflammatory, antinociceptive, anti-apoptotic, and neuroprotective pharmacological activities. Its chemical constituents work to reduce pain perception and dampen inflammatory responses within the body. By inhibiting nociceptive pathways, the plant effectively lessens the sensation of physical discomfort. Furthermore, its ability to prevent programmed cell death provides significant anti-apoptotic benefits. These combined properties suggest that the species may offer valuable protection for the nervous system against various forms of degeneration.
According to a study published by "Journal of ethnopharmacology", the methanolic extract of leaves of Stephania japonica (MESJ) was evaluated for antinociceptive activity at doses of 50, 100 and 200mg/kg. This plant is traditionally used to treat ailments such as inflammation, pain, rheumatism, cancer, bone fracture, and fever. MESJ produced a significant and dose-dependent increase in latencies during hot plate and tail immersion tests. The study also showed that MESJ inhibited acetic acid-induced writhing, formalin-induced lickings, and glutamate-induced lickings in a dose-dependent manner. These findings support the antinociceptive activity of the leaves of Stephania japonica in treating different painful conditions.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antinociceptive
- anti-apoptotic
- neuroprotective
What medicinal compounds this plant contains?
This plant contains a diverse array of medicinal compounds including bisbenzylisoquinoline alkaloids, cepharanthine analogs, hasubanan alkaloids, isotrilobine, and trilobine. These specific chemical constituents are primarily categorized as complex alkaloid structures. The presence of these various compounds contributes to the unique pharmacological profile of the species. Researchers often focus on these molecules to investigate their potential therapeutic applications in medicine. Each of these substances plays a distinct role in the plant's chemical makeup.
According to a study published by "Journal of natural products", an alkaloidal extract from the vines of Stephania japonica showed multidrug-resistance-reversing activity via the bicinchoninic acid assay. Through bioassay-directed fractionation and separation, 2 known bisbenzylisoquinoline alkaloids were isolated. These specific compounds are isotrilobine (1) and trilobine (2). Isotrilobine (1) was shown to be as active as verapamil (3) in reversing doxorubicin resistance in human breast cancer cells.
The primary medicinal compounds of this plant are shown in the list below.
- bisbenzylisoquinoline alkaloids
- cepharanthine analogs
- hasubanan alkaloids
- isotrilobine
- trilobine
What health conditions is this plant used for?
This plant is used for treating inflammation, pain, fever, convulsion, and seizure. Traditional practitioners often utilize its properties to reduce swelling and soothe bodily aches. It is frequently administered to help lower high body temperatures during a fever. Additionally, the plant plays a role in managing neurological episodes such as convulsions and seizures. These diverse applications make it a significant component in various herbal remedies.
According to a study published by "Journal of ethnopharmacology", Stephania japonica is traditionally used in the treatment of various ailments including inflammation, pain, rheumatism, cancer, bone fracture, and fever. The study evaluated the antinociceptive effect of methanolic extract of S. japonica (MESJ) leaves using doses of 50, 100, and 200mg/kg. To test these effects, researchers utilized models such as hot plate, tail immersion, acetic acid-induced writhing, formalin, and glutamate tests. The research investigated the potential involvement of opioid receptors by using naloxone at a dose of 2mg/kg in thermal models. These findings support the use of Stephania japonica leaves in the treatment of different painful conditions.
The main health conditions this plant is used for are shown in the list below.
- convulsion
- epilepsy
- seizure
- pain
- inflammation
What are the herbal preparations of this plant?
This plant is used to create medicinal herbal preparations such as alkaloidal extract to harness its potent bioactive properties. These preparations primarily focus on isolating specific indole alkaloids that exhibit significant pharmacological activity. Researchers study these extracts to understand their potential effects on the central nervous system and other biological pathways. The concentration of active compounds in each preparation depends heavily on the extraction method and the plant part used. Such specialized preparations serve as the foundation for further biochemical investigations into the plant's therapeutic value.
According to a study published by "Journal of natural products", an alkaloidal extract of the vines of Stephania japonica showed multidrug-resistance-reversing activity as demonstrated by the bicinchoninic acid assay. Two known bisbenzylisoquinoline alkaloids, isotrilobine (1) and trilobine (2), were isolated by bioassay-directed fractionation and separation. Isotrilobine (1) was shown to be as active as verapamil (3) in reversing doxorubicin resistance in human breast cancer cells.
The main herbal preparations of this plant are shown in the list below.
- alkaloidal extract
What side effects this plant can have?
This plant can cause unknown health complications because there is currently insufficient toxicological data available regarding its safety in humans. Researchers have not yet established standardized doses or identified the specific physiological impacts of consuming its various parts. Because the chemical composition of the plant is not fully characterized, the potential for organ toxicity or adverse reactions remains a significant concern. Without comprehensive clinical studies, any medicinal claims made about this species lack a scientific foundation for safety. Therefore, extreme caution is necessary to avoid accidental poisoning or long-term biological damage.
The main side effects this plant can have are shown in the list below.
- Insufficient toxicological data available
What herbs are paired with Stephania japonica?
This plant, commonly known as Japanese jasmine, is best paired with calming herbs like chamomile, lavender, and lemon balm to enhance its delicate floral notes.
These combinations are frequently used in herbal teas to create soothing aromatic blends. Adding peppermint or spearmint can also provide a refreshing contrast to the plant's natural sweetness. Many herbalists recommend these pairings to balance the subtle scent profiles during infusion processes.
Utilizing these specific botanical partners helps to amplify the sensory experience of the jasmine.