Macleaya cordata
What's the taxonomical classification of Macleaya cordata?
Macleaya cordata belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Its taxonomic progression continues through the class Equisetopsida and the subclass Magnoliidae, placing it under the order Ranunculales. As a member of the family Papaveraceae, this plant is further categorized into the genus Macleaya, with the specific species designation being cordata.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Ranunculales |
| Family | Papaveraceae |
| Genus | Macleaya |
| Species | cordata |
What are the morphological characteristics of this plant?
Macleaya cordata has heart-shaped, succulent leaves that are typically fleshy, bright green, and arranged in a dense rosette at the base of the plant. The leaf margins are often smooth or slightly undulated, while the texture can vary from glabrous to finely pubescent depending on the specific specimen. This species features a compact growth habit where the leaves overlap to protect the central growing point. Small, tubular flowers emerge from the center of the rosette, often displaying vibrant colors like red or orange. The root system is generally shallow and adapted to store moisture within the succulent tissues of the foliage.
What is the geographical distribution of this plant?
This plant is native to the montane forests and cloud forests of southern Mexico, specifically concentrated in states like Veracruz and Oaxaca. It typically thrives in high-altitude environments where moisture levels are consistent due to frequent mist and fog. These populations are often found growing on rocky slopes or within the shaded understory of dense subtropical woodlands. The specific range is relatively restricted to these tropical mountain ranges, making it a localized species. Consequently, its distribution is closely tied to the unique microclimates found in these specific elevations.
How is this plant cultivated?
This plant thrives in bright, indirect light and requires consistently moist, well-draining soil enriched with organic matter.
To maintain its lush heart-shaped foliage, provide high humidity and keep temperatures between 60 and 80 degrees Fahrenheit. It is best to water the plant when the top inch of soil feels dry to avoid root rot. Regular fertilization during the growing season will encourage vigorous climbing and dense growth.
Because it is a trailing vine, it performs exceptionally well in hanging baskets or as a groundcover in shaded tropical gardens.
What parts of this plant are used medicinally?
This plant Macleaya cordata utilizes its leaves, roots, shoots, stems, and fruits for various medicinal applications. The leaves are often prepared as infusions to treat inflammatory conditions and digestive ailments. Extracting compounds from the roots provides traditional remedies for strengthening the body's internal systems. Both the tender shoots and the sturdy stems are harvested to create decoctions that address specific topical or systemic issues. Finally, the fruits are sometimes utilized in specialized formulations to support overall wellness.
According to a study published by "Scientific reports", the main source of sanguinarine is the medicinal plant Macleaya cordata. To produce sanguinarine, hairy root cultures were established by co-cultivating leaf and stem explants with Agrobacterium rhizogenes. All growth media, except for the co-cultivation medium, contained 200 mg/L timentin to eliminate A. rhizogenes. Researchers compared metabolic profiles and gene expression of hairy roots and wild-type roots sampled at 5 time points. This study found that the sanguinarine and dihydrosanguinarine contents of hairy roots were far higher than those of wild-type roots.
The parts of this plant that are ued medicinally are shown in the list below.
- leaf
- root
- shoot
- stem
- fruits
What traditional systems uses this plant?
This plant, Macleaya cordata, has been utilized in Traditional Chinese Medicine to treat various ailments through its various parts. Historical practitioners often employed the plant for its potential properties in managing specific inflammatory conditions. In some regional traditions, the leaves or stems were prepared in decoctions to address internal imbalances. These ancient methods relied on the plant's perceived bioactive qualities to support holistic health. This long-standing history of use highlights its cultural importance within traditional healing frameworks.
According to a study published by "Talanta", Macleaya cordata is used in traditional Chinese medicine (TCM). The extracts of Macleaya cordata contain 641.8±7.5 mg/kg of chelerythrine (CHE). Additionally, the corresponding value for sanguinarine (SAN) found in these extracts is 681.8±7.9 mg/kg. The method used for analysis achieved baseline separation within 120 s under an electrical voltage of 1.8 kV. This process showed good linearity for CHE in the range of 0.15-550 μg mL(-1) with r=0.9993 and for SAN in the range of 0.3-600 μg mL(-1) with r=0.9998.
The hystorical systems that uses this plant are shown in the list below.
- Traditional Chinese Medicine
What are the pharmacological activities of Macleaya cordata?
This plant has demonstrated significant pharmacological activities including analgesic, anti-inflammatory, antibacterial, antioxidant, and antimicrobial properties. Researchers have identified these biological effects through various studies focused on the plant's phytochemical composition. The analgesic and anti-inflammatory actions suggest a potential role in managing pain and reducing swelling. Furthermore, its strong antibacterial and antimicrobial capabilities indicate effectiveness against a range of pathogenic microorganisms. These combined antioxidant properties also contribute to its overall therapeutic potential in medicinal applications.
According to a study published by "Chinese medicine", some isoquinoline alkaloids from Macleaya cordata exhibited antibacterial, antiparasitic, antitumor, and analgesic effects. The study identified 26 isoquinoline alkaloids from the plant and predicted 65 targets using PharmaDB, 13 of which were confirmed by HypoDB. Within the interaction network, targets were involved in cancer (31 targets), microorganisms (12 targets), neurodegeneration (10 targets), inflammation and autoimmunity (8 targets), parasitosis (5 targets), injury (4 targets), and pain (3 targets). Dihydrochelerythrine (C6) was found to hit 23 fitting targets, while Macrophaage migration inhibitory factor (MIF) hits 15 alkaloids (C1-2, C11-16, C19-25) as a promising cancer-related target. Ultimately, the anticancer, anti-inflammatory, and analgesic effects of Macleaya cordata were found to be the most significant among many possible activities.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antibacterial
- antioxidant
- antimicrobial
What medicinal compounds this plant contains?
This plant contains the benzophenanthridine alkaloids sanguinarine, chelerythrine, dihydrochelerythrine, 6-ethoxysanguinine (6-ES), and 6-methoxydihydrosanguinarine (6-MS). These specific medicinal compounds are known for their potent biological activities, including antimicrobial and anti-inflammatory properties. Researchers study these alkaloids for their potential applications in developing new pharmaceutical treatments. The presence of these diverse chemical structures allows the plant to interact with various cellular targets. Each of these alkaloids contributes to the overall therapeutic profile observed in Macleaya cordata extracts.
According to a study published by "Frontiers in pharmacology", alkaloids are the primary bioactive compounds of Macleaya cordata that exhibit antibacterial, antiinflammatory, and antioxidant activities. Specific alkaloids identified include Sanguinarine, 6-ethoxysanguinarine (6-ES), 6-methoxydihydrosanguinarine (6-MS), chelerythrine (CH), and dihydrochelerythrine (DICH). These compounds exhibited good antibacterial activity against Gram-positive bacteria, including MRSA. In particular, 6-ES rapidly killed MRSA by potentially targeting the membrane and FtsZ to interfere with metabolic functions and ROS production. Additionally, 6-ES directly suppressed the hemolytic activity of α-hemolysin and displayed low development of drug resistance in vitro.
The primary medicinal compounds of this plant are shown in the list below.
- Sanguinarine
- Chelerythrine
- Dihydrochelerythrine
- 6-ethoxysanguinarine (6-ES)
- 6-methoxydihydrosanguinarine (6-MS)
What health conditions is this plant used for?
This plant is used for treating acute hepatic injuries, chronic hepatic injury, acute inflammation, inflammatory-related diseases, and intestinal disorders. Its bioactive compounds work to mitigate damage within the liver by protecting hepatocytes from oxidative stress. The medicinal properties also target systemic inflammatory processes to help manage various chronic conditions. Furthermore, the plant offers therapeutic benefits for stabilizing the digestive tract during intestinal disorders. These diverse applications highlight its significant role in traditional herbal medicine for both organ-specific and systemic ailments.
According to a study published by "Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials", Macleaya cordata was investigated for its pharmacodynamic effect on acute hepatic injuries in rats caused by tetrachloromethan or galactoslmine. The results showed that Macleaya cordata could improve liver function and lessen the level of serum LDH and mortality of rats. In rats with chromic heptic injury caused by tetrachloromethane, the plant could increase the ratio of serum A/G, protect cellular membrane effectively, and inhibit fibrosis. Furthermore, Macleaya cordata enhanced the function of T and B lymphocytes.
The main health conditions this plant is used for are shown in the list below.
- acute hepatic injuries
- acute inflammation
- chronic hepatic injury
- inflammation
- inflammatory-related diseases
What are the herbal preparations of this plant?
This plant is Macleaya cordata, which is processed into medicinal herbal preparations including Macleaya cordata extract capsules and fine powder. These preparations are often utilized in traditional practices to harness the botanical properties of the species. The extract capsules provide a concentrated dose of the plant's active compounds for standardized consumption. Alternatively, the dried powder can be incorporated into various topical or dietary applications. Each form offers a different method for delivering the specific therapeutic benefits associated with this climbing vine.
According to a study published by "Fitoterapia", Macleaya cordata is used in traditional Chinese medicine for its anti-inflammatory and antibacterial activities. In murine macrophage RAW264.7 cells, Macleaya cordata extract increased both mRNA and protein levels of HO-1. Among its major alkaloid constituents, only sanguinarine appeared to be responsible for these effects. At the concentration of 2 μM, sanguinarine induced nuclear accumulation of Nrf2, increased the expression of Hmox1 gene encoding HO-1, and elevated HO-1 protein levels. While the upregulation of HO-1 in RAW264.7 cells by sanguinarine was accompanied by a decrease in cell viability, sanguinarine at micromolar, non-cytotoxic concentrations elevated protein levels of HO-1 and thioredoxin 1 in primary cultures of human hepatocytes.
The main herbal preparations of this plant are shown in the list below.
- Macleaya cordata extract
- capsules
- powder
What side effects this plant can have?
This plant can cause severe physiological damage including hepatic steatosis, oxidative stress, pulmonary haemorrhage, renal tubular necrosis, and metabolic disruption. Consumption of the plant leads to the accumulation of fat in the liver and significant cellular damage through increased oxidative stress. It has also been linked to life-threatening conditions such as bleeding in the lungs and the death of cells within the renal tubules. Furthermore, the toxins present in the plant interfere with normal bodily functions by inducing widespread metabolic disruption. These multifaceted toxicities pose a serious risk to multiple organ systems simultaneously.
According to a study published by "Regulatory toxicology and pharmacology : RTP", the bioactive alkaloid sanguinarine derived from Macleaya cordata has an LD50 of 1000 mg/kg·bw in males and 926 mg/kg·bw in females. Subacute exposure for 14 days at 1/10, 1/50, and 1/100 LD50 levels induced pulmonary haemorrhage, hepatic steatosis, and renal tubular necrosis. The study identified a LOAEL of 10 mg/kg for subacute exposure lasting 14 days. Toxicokinetic analysis showed tissue accumulation in the liver and kidneys alongside marked inhibition of glutathione peroxidase. High doses also caused dose-dependent dysbiosis by reducing Firmicutes/Bacteroidetes ratios and depleting Lactobacillus.
The main side effects this plant can have are shown in the list below.
- hepatic steatosis
- oxidative stress
- pulmonary haemorrhage
- renal tubular necrosis
- metabolic disruption
What herbs are paired with Macleaya cordata?
This plant, Macleaya cordata, pairs effectively with shade-loving herbs like mint, lemon balm, and chives to create a lush groundcover arrangement.
Because it features broad, heart-shaped leaves, it provides a dense backdrop that highlights the fine texture of aromatic herbs. Pairing it with creeping thyme can help fill smaller gaps in the soil while offering a fragrant sensory experience. These combinations work best in moist, partially shaded garden beds where both species can thrive together.
Using these complementary textures ensures a visually balanced and functional herb garden.