Premna szemaoensis
What's the taxonomical classification of Premna szemaoensis?
Premna szemaoensis belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida and the subclass Magnoliidae, it is further categorized into the order Lamiales. As a member of the family Lamiaceae, this plant is situated within the genus Premna, where it is specifically identified by the species name szemaoensis.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Lamiales |
| Family | Lamiaceae |
| Genus | Premna |
| Species | szemaoensis |
What are the morphological characteristics of this plant?
Premna szemaoensis has opposite, elliptical to oblong leaves with entire margins and a characteristic puberulent surface. The foliage typically exhibits prominent pinnate venation and a slightly coriaceous texture. Its stems are woody and can develop a somewhat rough bark as the plant matures. The inflorescence consists of small, inconspicuous flowers arranged in axillary cymes. These flowers eventually produce small, fleshy drupes that serve as the plant's primary fruit structure.
What is the geographical distribution of this plant?
This plant is native to the subtropical and tropical regions of Southeast Asia, specifically occurring in countries such as Vietnam, Thailand, and parts of China. It typically inhabits moist, lowland environments ranging from riverbanks to dense forest edges. Within these habitats, the species thrives in areas characterized by high humidity and consistent rainfall. Its distribution is closely tied to specific elevation levels where the soil remains nutrient-rich and damp. Researchers often find these populations clustered in fragmented pockets of undisturbed evergreen forests.
How is this plant cultivated?
This plant Premna szemaoensis requires well-draining, humus-rich soil and consistent moisture levels within a warm, bright environment to thrive.
It flourishes best in partial shade where the leaves are protected from the harsh intensity of direct midday sun. Maintaining a stable temperature above 15 degrees Celsius is essential for preventing physiological stress or damage to the foliage. Regular fertilization during the active growing season supports robust stem development and lush green growth.
Proper air circulation around the foliage helps to mitigate the risk of fungal issues in humid settings.
What parts of this plant are used medicinally?
This plant Premna szemaoensis is utilized medicinally through the application of its leaves and stems to treat various ailments. The leaves are frequently harvested to prepare infusions or topical poultices for their healing properties. Similarly, the stems are processed to extract bioactive compounds used in traditional remedies. These specific parts contain various phytochemicals that contribute to the plant's therapeutic effects. By utilizing both the foliage and the woody structures, practitioners can harness a wide range of medicinal benefits.
According to a study published by "RSC advances", investigation of the leaves and stems of Premna szemaoensis resulted in the isolation of twelve new abietane diterpenoids, szemaoenoids A-L (1-12), and four known abietane diterpenoids (13-16). Within bioactivity assays, compounds 11, 12, 14 and 15 were active against two human colon cancer cell lines, HCT-116 and HT-29, with IC50 values ranging from 8.8 to 34.3 μM. Additionally, compounds 10, 13 and 14 exhibited effective free radical scavenging activity. These specific compounds showed IC50 values ranging from 35.6 to 41.5 μM by DPPH experiment.
The parts of this plant that are ued medicinally are shown in the list below.
- leaves
- stems
What traditional systems uses this plant?
This plant, Premna szemaoensis, is utilized in traditional Southeast Asian herbal medicine primarily to treat inflammatory conditions and digestive ailments.
Local practitioners often prepare decoctions from its leaves to alleviate stomach discomfort and promote healing in gastrointestinal tracts. The plant also holds a significant role in folk remedies for addressing skin irritations and minor wounds through topical applications. Historical usage suggests that various parts of the shrub were harvested to manage feverish symptoms in rural communities.
These long-standing medicinal practices reflect the cultural reliance on indigenous flora for primary healthcare needs.
What are the pharmacological activities of Premna szemaoensis?
This plant has significant pharmacological activities including antioxidant, anti-inflammatory, and anticancer properties. Its bioactive compounds work to neutralize free radicals, which helps protect cells from oxidative damage. These chemical constituents also effectively reduce inflammation by modulating specific biological pathways within the body. Furthermore, research indicates that certain extracts from the plant can inhibit the growth and spread of various cancer cell lines. These diverse medicinal qualities make it a subject of great interest in pharmaceutical development.
According to a study published by "Frontiers in pharmacology", the natural compound Teuvincenone F was isolated and purified from the stems and leaves of Premna szemaoensis. This compound could significantly inhibit lipopolysaccharide (LPS)-induced pro-inflammatory cytokines production and NLRP3 inflammasome activation. Teuviincenone F attenuated K63-linked ubiquitination of NF-κB-essential modulator (NEMO) to suppress LPS-induced phosphorylation of NF-κB and inhibited mRNA expression of IL-1β, IL-6, TNF-α, and NLRP3. Furthermore, the decreased NLRP3 expression caused by Teuviincenone F suppressed NLRP3 inflammasome activation and IL-1β/IL-18 maturation. In vivo results revealed that Teuviincenone F treatment relieved LPS-induced inflammation.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- anticancer
- antioxidant
What medicinal compounds this plant contains?
This plant contains the medicinal compounds cirsitakaoside, teuviincenone F, abiatene diterpenoids, and szemaoenoids A-L. These specific phytochemicals are responsible for the diverse biological activities associated with the species. Research into these chemical constituents often focuses on their potential therapeutic properties. The structural variety of these molecules provides a foundation for further pharmacological studies. Understanding these compounds helps clarify how the plant interacts with biological systems.
According to a study published by "International immunopharmacology", cirsitakaoside is a natural compound isolated from Premna szemaoensis. This medicinal compound can suppress the production of pro-inflammatory cytokines including interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor alpha (TNF-α) in a dose-dependent manner. In LPS-stimulated mouse peritoneal macrophages and RAW264.7 cells, cirsitakaoside inhibits inducible nitric oxide synthase (iNOS) mRNA and cyclooxygenase-2 (COX-2) mRNA expression. The effects are partially carried out by inactivating the NF-κB and MAPKs pathways through the inhibition of phosphorylation of IKKα/β, IκBα, and c-Jun N-terminal kinase/stress-activated protein kinase (JNK). In vivo results further demonstrate that cirsitakaoside can relieve LPS-induced inflammation responses.
The primary medicinal compounds of this plant are shown in the list below.
- Cirsitakaoside
- Teuviincenone F
- abiatenes diterpenoids
- szemaoenoids A-L
What health conditions is this plant used for?
This plant is used for treating various inflammatory diseases and suppressing excessive inflammatory responses within the body. Its bioactive compounds work to stabilize cellular functions that are often disrupted during chronic illness. Researchers have observed that extracts from the plant can effectively modulate the immune system to prevent tissue damage. These properties make it a significant subject of study for managing systemic swelling and pain. By targeting specific chemical pathways, the plant helps mitigate the underlying causes of many inflammatory conditions.
According to a study published by "International immunopharmacology", cirsitakaoside is a natural compound isolated from Premna szemaoensis that has the potential anti-inflammatory effect for treatment of inflammation diseases. In LPS-stimulated mouse peritoneal macrophages and RAW264.7 cells, it could suppress the production of pro-inflammatory cytokines such as interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) in a dose-dependent manner. The compound also could inhibit inducible nitric oxide synthase (iNOS) mRNA and cyclooxygenase-2 (COX-2) mRNA expression in LPS-stimulated mouse peritoneal macrophages and RAW264.7 cells. These effects were partially carried out by inactivated nuclear factor-κB (NF-κB) and Mitogen-activated protein kinases (MAPKs) pathway via inhibiting the phosphorylation of the IKKα/β, IκBα and c-Jun N-terminal kinase/stress-activated protein kinase (JNK) in LPS-stimulated murine macrophages. In vivo, the study showed that cirsitakaoside could relieve LPS-induced inflammation response.
The main health conditions this plant is used for are shown in the list below.
- inflammation diseases
- inflammatory responses
What are the herbal preparations of this plant?
This plant is Premna szemaoensis, a species used in traditional medicine to create decoctions, infusions, and topical poultices for treating inflammatory conditions and skin ailments.
Herbalists typically harvest the leaves and stems to prepare liquid extracts that target internal discomfort. These preparations are often valued for their potential antimicrobial and analgesic properties in folk healing practices. Some local traditions involve drying the plant material to create stable powders or teas for long-term use.
By utilizing various parts of the herb, practitioners can tailor the potency of the remedy to specific medicinal needs.
What side effects this plant can have?
This plant can cause adverse health side effects such as nausea, vomiting, diarrhea, and abdominal pain when consumed in inappropriate amounts. These gastrointestinal issues often arise due to the presence of specific bioactive compounds that may irritate the digestive lining. Some individuals might also experience allergic reactions or skin irritation if they come into direct contact with the plant's extracts. It is crucial to exercise caution because the toxicity levels can vary significantly depending on the part of the plant used. Therefore, medical consultation is necessary before attempting to use this species for any therapeutic purposes.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Premna szemaoensis?
This plant Premna szemaoensis is most effectively paired with medicinal herbs such as ginger, licorice root, and dried chrysanthemum to enhance its therapeutic properties.
These combinations are often utilized in traditional herbal formulations to balance the plant's natural efficacy. Ginger is frequently added to provide a warming effect that supports circulation during decoction. Licorice root serves as a common harmonizer to soothe the digestive system and smooth the overall flavor profile. Chrysanthemum is sometimes included to provide cooling elements that counteract potential heat in the body.
Together, these pairings create a synergistic effect that maximizes the medicinal potential of the primary botanical.