Smilax glabra
What's the taxonomical classification of Smilax glabra?
Smilax glabra belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Its hierarchical lineage continues through the class Equisetopsida and the subclass Magnoliidae, falling under the order Liliales. Within this botanical structure, the plant is a member of the family Smilacaceae, specifically situated in the genus Smilax, and is identified by the specific epithet glabra.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Liliales |
| Family | Smilacaceae |
| Genus | Smilax |
| Species | glabra |
What are the morphological characteristics of this plant?
Smilax glabra has woody, climbing stems equipped with axillary spines and opposite, leathery leaves that feature three distinct leaflets. The leaves are typically ovate to elliptical in shape with entire or slightly wavy margins. These plants produce small, greenish-white flowers arranged in compact clusters that eventually develop into fleshy, dark berries. The foliage is characterized by a smooth, glabrous texture on both the upper and lower surfaces. Long, slender vines allow this species to scramble through dense undergrowth using its thorny stems for support.
What is the geographical distribution of this plant?
This plant is native to a wide range of regions across eastern North America, stretching from the Atlantic coast to the Mississippi River valley and extending north into southern Canada. It thrives in diverse habitats including deciduous forests, thickets, and moist woodlands. Its distribution is particularly concentrated in the southeastern and mid-Atlantic United States where humidity is higher. Individual populations can be found in various soil types as long as they provide adequate shade and moisture. This widespread presence allows it to occupy many different ecological niches throughout its range.
How is this plant cultivated?
This plant requires well-drained, humus-rich soil and partial shade to thrive in a temperate climate.
It is a vigorous climbing vine that needs a sturdy trellis or support structure to manage its spreading growth habit. Regular watering is essential to keep the soil consistently moist, though it can tolerate some periods of drought once established. Because it grows quite rapidly, pruning is necessary to control its size and prevent it from overtaking nearby vegetation.
Providing adequate organic matter during the planting process will ensure the roots develop strongly for long-term health.
What parts of this plant are used medicinally?
This plant Smilax glabra is utilized medicinally through the use of its rhizoma, radix, and root. The rhizoma, or underground stem, is frequently processed to create decoctions for treating inflammatory conditions. Additionally, the radix and the primary root are harvested to provide bioactive compounds that support detoxification and joint health. These various underground structures contain the essential chemical constituents required for traditional therapeutic applications. Practitioners carefully select specific parts depending on the desired potency of the herbal preparation.
According to a study published by "Phytochemical analysis : PCA", SmilaX Glabrae Rhizoma (SGR) contains 20 potentially new compounds and 161 known ones identified in its ethanol extract. These 20 potentially new compounds include 16 flavonoids (C19, C20, and C27-C40) and 4 phenylpropanoids (C107, C112, C113, and C118). Out of the 161 known compounds, 16 were identified in SmilaX glabra Roxb. for the first time. Within the 161 known compounds, 84 constituents have been reported to possess 17 types of pharmacological activities. Among these 84 bioactive constituents, 5 were found in S. glabra for the first time.
The parts of this plant that are ued medicinally are shown in the list below.
- Rhizoma
- radix
- root
What traditional systems uses this plant?
This plant Smilax glabra is utilized in traditional Chinese Materia Medica and Thai herbal medicine to treat various inflammatory and systemic conditions. In the Chinese tradition, the root is often prepared to clear heat, resolve toxicity, and promote blood circulation. Practitioners frequently prescribe it to address ailments such as swelling, skin diseases, and joint pain. Within the framework of Thai herbal medicine, the plant is also valued for its ability to detoxify the body and alleviate internal heat. These diverse historical uses highlight its long-standing importance in Southeast Asian and East Asian healing practices.
According to a study published by "Microscopy research and technique", confusion regarding the species associated with the name Bixie in Chinese Materia Medica began centuries ago. Diverse medicinal plants from the genus Smilax have been documented under the name Bixie or a very similar name as folk medicines in different areas of China. One of the seven sorts of representative Bixie herbs characterized in this study was Smilax glabra. The research utilized a mixed microscopic method to differentiate these seven species through the examination of powders and cryotomed transverse sections. This study represents the first attempt to distinguish these herbs using comprehensive techniques including common light microscopy, fluorescence microscopy, and polarized light microscopy.
The hystorical systems that uses this plant are shown in the list below.
- Chinese Materia Medica
- Thai herbal medicine
What are the pharmacological activities of Smilax glabra?
This plant has anti-inflammatory, anti-diabetic, anti-oxidant, hepatoprotective, and anti-hyperuricemic pharmacological activities. These biological properties are primarily attributed to its rich content of bioactive compounds like saponins and flavonoids. Research indicates that its antioxidant effects help neutralize free radicals and mitigate oxidative stress in various tissues. Furthermore, the plant demonstrates the ability to regulate blood glucose levels and protect liver cells from chemical damage. It also plays a significant role in managing uric acid concentrations to prevent conditions like gout.
According to a study published by "Drug design, development and therapy", Smilax glabra Roxb. is a medicinal plant distributed in 17 countries worldwide. More than 200 chemical components have been discovered within the plant, including flavonoids, phenolic, phenolic acids, stilbenes, organic acids, and phenylpropanoids. Previous studies have demonstrated that Smilax glabra and its active ingredients show a wide range of pharmacological effects. These specific activities include anti-infective, anti-cancer, anti-inflammatory, antioxidant, and cardiovascular protection. While these effects are documented, there is currently a lack of clinical studies and toxicity studies to support further development.
The primary pharmacological activities of this plant are shown in the list below.
- anti-diabetic
- anti-inflammatory
- anti-oxidant
- hypoglycemic
- alpha-glycosidase inhibition
What medicinal compounds this plant contains?
This plant contains the medicinal compounds astilbin, engeletin, isoastilbin, neoastilbin, and β-sitosterol. These bioactive constituents contribute to the diverse pharmacological profile often associated with the Smilax glabra species. Research suggests that the stilbene derivatives like astilbin and its isomers play significant roles in its biological activities. Additionally, the presence of sterols such as β-sitosterol supports its traditional uses in various therapeutic applications. Understanding these specific chemical components is essential for evaluating the plant's potential in modern medicine.
According to a study published by "Journal of the Medical Association of Thailand = Chotmaihet thangphaet", the rhizomes of Smilax glabra have been used to treat infectious diseases and immunological disorders. The 95% ethanolic extract of Smilax glabra showed an IC50 value of 5.74 ± 2.44 µg/ml, while the 50% ethanolic extract had an IC50 value of 23.54 ± 4.75 µg/ml. These ethanolic extracts demonstrated much higher activity than Ketotifen, which had an IC50 of 58.90 µM. In contrast, the water extract of Smilax glabra had negligible activity with an IC50 > 100 µg/ml. Two isolated flavonols from the plant, Engeltin and Astilbin, showed weak anti-allergic activity with IC50 values of 97.46 ± 2.04 and >100 µg/ml, respectively.
The primary medicinal compounds of this plant are shown in the list below.
- Astilbin
- Engeletin
- SGPF1a
- SGPF1b
- SGPF1c
What health conditions is this plant used for?
This plant is used for treating arthritis, osteoarthritis, rheumatism, inflammation, and various forms of physical pain. It contains bioactive compounds that help reduce swelling in the joints and connective tissues. Many people utilize its properties to manage the discomfort associated with chronic inflammatory diseases. By targeting the root causes of irritation, it serves as a natural remedy for those suffering from persistent aches. This herbal application provides relief for individuals struggling with long-term mobility issues caused by joint degeneration.
According to a study published by "Pharmaceuticaals (Basel, Switzerland)", Smilax glabra Roxb. (SGR) shows therapeutic potential in attenuating the progression of arthritis. Research identified 14 active SGR compounds that interact with 59 common targets for this disease. These targets play major roles in biological processes including wound healing, oxygen responses, and chemical stimuli. In MC3T3-E1 cells, SGR treatment significantly increased ALP activity, while bone marrow macrophages showed a low number of TRAP-positive cells. The plant effectively inhibits inflammatory responses, prevents cartilage degradation, and promotes bone regeneration.
The main health conditions this plant is used for are shown in the list below.
- Arthritis
- Osteoaartrithis
- Rheumatism
- inflammation
- pain
What are the herbal preparations of this plant?
This plant is used to create medicinal herbal preparations such as Smilacis Glabrae Rhizoma, Smilax glabra Roxb. extract, Yukmi-jihang-tang, powders, and tea. These various forms allow for different methods of administration depending on the specific therapeutic goal. For example, the rhizome is often processed into concentrated extracts or dried into fine powders for easier ingestion. Traditional decoctions can also be brewed as a tea to harness its bioactive compounds. Each preparation method serves to tailor the plant's properties for treating diverse ailments.
According to a study published by "Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials", the psbA-trnH barcoding technique can be used to effectively distinguish Smilax glabra from its related species. The maximum K2P genetic distance of the plants of Smilax glabra was found to be lower than the minimum K2P genetic distance of its related species. Using software like CodonCode Aligner and MEGA 6.0, the study analyzed sequences to provide molecular evidence for the identification of the original plant of Smilacis Glabrae Rhizoma. This identification process is important for ensuring clinic safety in medicinal use. The plants of Smilax glabra from various sources showed a monophyletic pattern in the cluster dendrogram.
The main herbal preparations of this plant are shown in the list below.
- Smilacis Glabrae Rhizoma
- Smilax glabra Roxb. extract
- Yukmi-jihang-tang
- powders
- tea
What side effects this plant can have?
This plant can cause serious health complications such as hypoglycemia and liver damage in some individuals. Consuming Smilax glabra may lead to dangerously low blood sugar levels, which can cause dizziness or fainting. There is also significant concern regarding its potential to induce hepatotoxicity and impair organ function. Because these side effects are severe, medical supervision is necessary when using such botanical substances. Always consult a healthcare professional to avoid these toxicological risks.
According to a study published by "Biological & pharmaceuctical bulletin", the methanol extract of Smilax glabra rhizomes administered at 100 mg/kg body weight reduced blood glucose in normal mice 4 h after intraperitoneal administration (p<0.05). This extract also significantly lowered blood glucose in KK-Ay mice under similar conditions (p<0.001). While SM suppressed epinephrine-induced hyperglycemia in mice, it did not affect blood glucose in streptozotocin-induced diabetic mice. In an insulin tolerance test, SM-treated KK-Ay mice showed a significant decrease in blood glucose. These results suggest that the hypoglycemic effect of SM increased insulin sensitivity.
The main side effects this plant can have are shown in the list below.
- hypoglycemia
- liver damage
What herbs are paired with Smilax glabra?
This plant Smilax glabra pairs effectively with bitter and warming herbs such as ginseng, ginger, and licorice to enhance its tonic properties.
When used in traditional formulations, the root is often combined with astragalus to support immune function and strengthen the body's vital energy. Adding cinnamon or cloves can help direct the medicinal effects toward the blood and improve circulation throughout the system. These combinations are typically designed to balance the plant's specific energetic profile within a complex decoction.
Selecting complementary herbs helps maximize the therapeutic potential of the Smilax glabra root in various wellness practices.