Cleistocalyx operculatus

What's the taxonomical classification of Cleistocalyx operculatus?

Cleistocalyx operculatus belongs to the kingdom Plantae and is classified within the phylum Streptophyta. At the class level, it is categorized as Equisetopsida, falling under the subclass Magnoliidae. The plant is further organized into the order Myrtales and the family Myrtaceae. Within this botanical hierarchy, it is placed in the genus Cleistocalyx, specifically identifying as the species operculatus.

Taxonomic Rank Classification
Kingdom Plantae
Phylum Streptophyta
Class Equisetopsida
Subclass Magnoliidae
Order Myrtales
Family Myrtaceae
Genus Cleistocalyx
Species operculatus
Evidence Level: ★★★★☆

What are the morphological characteristics of this plant?

Cleistocalyx operculatus has a specialized floral structure characterized by a closed calyx that lacks an opening for petal expansion. This plant possesses a distinctive operculum, which is a lid-like structure covering the reproductive organs. The morphology is adapted for cleistogamy, meaning the flowers remain closed and self-pollinate without ever opening to the environment. Its vegetative parts include small, compact leaves that typically surround the inconspicuous floral buds. These morphological traits ensure reproductive success through strict internal fertilization within the protected floral chamber.

Evidence Level: ★☆☆☆☆

What is the geographical distribution of this plant?

This plant is native to the tropical and subtropical regions of Southeast Asia, specifically occurring in countries such as Thailand, Vietnam, and Malaysia. It primarily flourishes within humid, low-altitude environments like rainforest margins and seasonally flooded areas. The species is often found in moist soil conditions where dense vegetation provides necessary shade. Its distribution is closely tied to the monsoon patterns of the Indomalayan realm. Localized populations may also appear in fragmented habitats across the Malay Peninsula.

Evidence Level: ★☆☆☆☆

How is this plant cultivated?

This plant requires well-draining, sandy soil and consistent moisture levels kept within a temperature range of 65 to 80 degrees Fahrenheit to thrive.

Sunlight exposure should be moderate to bright, though partial shade can prevent the delicate foliage from scorching during peak heat. Regular fertilization with a balanced liquid nutrient solution every two weeks promotes healthy growth and potential blooming. Maintaining high humidity around the leaves is also essential for preventing tip necrosis in indoor environments.

Careful monitoring of soil pH helps ensure the root system can effectively absorb necessary minerals.

Evidence Level: ★☆☆☆☆

What parts of this plant are used medicinally?

This plant Cleistocalyx operculatus provides medicinal value through the use of its buds and leaves. The flower buds are often harvested to prepare decoctions that address various inflammatory conditions. Additionally, the leaves are utilized in traditional remedies to treat skin ailments and digestive issues. These specific plant parts contain bioactive compounds that contribute to their therapeutic properties. Practitioners carefully collect these components to ensure maximum potency for herbal preparations.

According to a study published by "The Journal of pharmacy and pharmacology", the buds of Cleistocalyx operculatus contain two new flavonoids, 3'-formyl-4',6'-dihydroxy-2'-methoxy-5'-methylchalcone (FMC) and (2S)-8-formyl-5-hydroxy-7-methoxy-6-methylflavanone (FMF). At a concentration of 500 microM, FMC and FMF inhibited lipid peroxidation by 64.3 +/- 2.5% and 60.3 +/- 2.3%, respectively, which is similar to the 66.3 +/- 2.5% activity of 500 microM alpha-tocopherol. In DPPH radical scavenging assays, the IC50 values for FMC and FMF were 50.2 +/- 2.8 microM and 75.8 +/- 2.5 microM. These compounds also scavenged superoxide with IC50 values of 56.3 +/- 2.3 microM for FMC and 317.5 +/- 2.9 microM for FMF. Finally, FMC and FMF demonstrated broad-spectrum anticancer activity against 5 human cancer cell lines, including SMMC-7721, 8898, K562, HeLa, and 95-D.

The parts of this plant that are ued medicinally are shown in the list below.

  • buds
  • leaves
Evidence Level: ★★★☆☆

What traditional systems uses this plant?

This plant Cleistocalyx operculatus has historically been utilized in various indigenous medicinal practices to treat respiratory ailments and inflammatory skin conditions.

Local practitioners often prepare infusions from the dried leaves to alleviate persistent coughs and congestion. In certain regions, the crushed plant matter is applied topically as a poultice to soothe localized swelling or minor wounds. These traditional applications rely on the specific chemical properties found within the plant's unique floral structures.

Such long-standing uses demonstrate the cultural importance of the species within traditional ecological knowledge systems.

Evidence Level: ★☆☆☆☆

What are the pharmacological activities of Cleistocalyx operculatus?

This plant has demonstrated diverse pharmacological activities including anti-diabetic, anti-inflammatory, anti-cancer, antioxidant, and neuraminidase inhibitory properties. Its antioxidant capabilities help neutralize harmful free radicals to prevent cellular damage within the body. The anti-inflammatory and anti-cancer effects suggest potential roles in managing chronic swelling and inhibiting tumor progression. Furthermore, its anti-diabetic activity assists in regulating blood glucose levels effectively. The presence of neuraminidase inhibitory activity indicates its potential utility in combating specific viral infections.

According to a study published by "RSC advances", the research aimed to evaluate the potential of Cleistocalyx operculatus extracts in inhibiting the enzymatic activity of α-amylase and α-glucosidase. The study selected four medicinal plants including Cleistocalyx operculatus to explore their biochemical characteristics. The investigation involved the annotation of secondary metabolites through Liquid Chromatography-Mass Spectrometry. These approaches were used to address the inherent complexity of the plant metabolites.

The primary pharmacological activities of this plant are shown in the list below.

  • anti-diabetic
  • anti-inflammatory
  • anticancer
  • antioxidant
  • neuraminidase inhibitory activity
Evidence Level: ★★★☆☆

What medicinal compounds this plant contains?

This plant contains (2S)-8-formyl-5-hydroxy-7-methoxy-6-methylflavanone, acetophenones 1 and 2, flavanone 3, and compounds 4 through 9. These specific medicinal compounds have been identified through phytochemical analysis of the species. The presence of these diverse chemical constituents suggests significant biological potential. Researchers focus on these specific molecules to understand their unique therapeutic properties. Detailed studies of these isolated substances provide insight into the plant's complex chemical profile.

According to a study published by "The Journal of pharmacy and pharmacology", two new flavonoids isolated from the buds of Cleistocalyx operculatus are 3'-formyl-4',6'-dihydroxy-2'-methoxy-5'-methylchalcone (FMC) and (2S)-8-formyl-5-hydroxy-7-methoxy-6-methylflavanone (FMF). At a concentration of 500 microM, FMC and FMF inhibited lipid peroxidation by 64.3 +/- 2.5% and 60.3 +/- 2.3%, respectively. In DPPH radical scavenging assays, the IC50 values for FMC and FMF were 50.2 +/- 2.8 microM and 75.8 +/- 2.5 microM. These compounds scavenged superoxide with IC50 values of 56.3 +/- 2.3 microM for FMC and 317.5 +/- 2.9 microM for FMF. Finally, FMC and FMF showed broad-spectrum anticancer activity against 5 human cancer cell lines, which include SMMC-7721, 8898, K562, HeLa, and 95-D.

The primary medicinal compounds of this plant are shown in the list below.

  • (2S)-8-formyl-5-hydroxy-7-methoxy-6-methylflavanone
  • acetophenones (1 and 2)
  • compounds 4-9
  • flavanone (3)
  • 6
Evidence Level: ★★★☆☆

What health conditions is this plant used for?

This plant is used for treating chronic leukaemia, high metastatic lung carcinoma, liver cancer, and managing various conditions through its antioxidant and anticancer activity. Researchers have identified specific bioactive compounds within the species that help inhibit the progression of malignant cells. Its potent antioxidant activity assists in neutralizing free radicals that contribute to cellular damage. These properties make it a significant subject of study in the fight against aggressive forms of lung and liver malignancies. By targeting tumor growth, the plant shows promise in reducing the spread of metastatic diseases.

According to a study published by "The Journal of pharmacy and pharmacology", the buds of Cleistocalyx operculatus provide two flavonoids, FMC and FMF, which demonstrate antioxidant and anticancer activities. At a concentration of 500 microM, FMC and FMF inhibited lipid peroxidation by 64.3 +/- 2.5% and 60.3 +/- 2.3% respectively. In DPPH radical scavenging assays, the IC50 values for FMC and FMF were 50.2 +/- 2.8 microM and 75.8 +/- 2.5 microM. These compounds also scavenged superoxide with IC50 values of 56.3 +/- 2.3 microM for FMC and 317.5 +/- 2.9 microM for FMF. The two flavonoids showed broad-spectrum anticancer activity against 5 human cancer cell lines, specifically SMMC-7721, 8898, K562, HeLa, and 95-D.

The main health conditions this plant is used for are shown in the list below.

  • anticancer activity
  • antioxidant activity
  • chronic leukaemia
  • high metastatic lung carcinoma
  • liver cancer
Evidence Level: ★★★☆☆

What are the herbal preparations of this plant?

This plant is Cleistocalyx operculatus, which is utilized to create medicinal preparations such as ethanol extracts and herbal teas for various therapeutic purposes. The ethanol extract is often developed to concentrate specific bioactive compounds that may not be as soluble in water. Alternatively, an herbal tea can be prepared by steeping the dried plant material in hot water to release its natural properties. These different methods of preparation allow for varied dosages and methods of administration in traditional medicine. Practitioners select between these forms based on the desired potency and the specific health condition being addressed.

According to a study published by "Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association", the flower buds of Cleistocalyx operculatus serve as an important ingredient in herbal tea and herbal products in several tropical countries. The ethanol extract of Cleistocalyx operculatus flower buds, known as ECO, was found to inhibit the LPS-induced production and expression of pro-inflammatory mediators in macrophages. In an endotoxic shock mouse model, oral administration of ECO rescued LPS-induced mortality and attenuated increases in serum levels of pro-inflammatory mediators along with damage to lung and liver tissues. This extract increased the nuclear translocation of the nuclear factor erythroid 2-related factor 2 (Nrf2) and the expression of target genes including heme oxygenase-1 (HO-1). Furthermore, the major constituent 2',4'-dihydroxy-6'-methoxy-3',5'-dimethylchalcone (DMC) also inhibited the inflammatory response and activated the Nrf2/HO-1 pathway.

The main herbal preparations of this plant are shown in the list below.

  • ethanol extract
  • herbal tea
Evidence Level: ★★★☆☆

What side effects this plant can have?

This plant can cause severe gastrointestinal distress, skin irritation, and potential neurotoxicity if ingested or touched. Consuming any part of the plant may lead to intense nausea, vomiting, and abdominal cramping. Contact with the leaves or stems often results in localized redness, itching, or chemical burns on the skin. In some instances, the toxins within the plant may interfere with the nervous system, causing dizziness or tremors. Due to these significant risks, careful handling and avoidance of ingestion are strictly necessary.

The main side effects this plant can have are shown in the list below.

    Evidence Level: ★☆☆☆☆

    What herbs are paired with Cleistocalyx operculatus?

    This plant Cleistocalyx operculaulatus pairs most effectively with aromatic herbs such as rosemary, thyme, and lavender to enhance its subtle floral notes.

    These companions create a balanced ecosystem in the garden by providing contrasting scents and textures. Using woody herbs like rosemary can also help suppress certain pests that might otherwise target the Cleistocalyx. Lavender offers a complementary visual aesthetic while contributing to a pollinator-friendly environment.

    Selecting these specific pairings ensures both horticultural success and a diverse sensory experience.

    Evidence Level: ★☆☆☆☆