Ant nest is a plant name, and not referring to a nest of ants. Ant nests are plants from the Hydnophytinae. They are epiphytes, attached to other plants, but no parasitic (living on the host) but merely using it to stick on. Hydnophytum consists of 45 species, with 26 species from Myrmecodia, make up 71 species of ant nests. All have hollow stem bubble-like fruit cavities inhabited by ants.
Banghai is an epiphyte. Lower stem is very greatly swollen into a large, rounded, fleshy, tuberous structure containing numerous labyrinthine cavities which are inhabited by ants. Leaves are opposite, thick, elliptic-obovate, 4 to 10 centimeters long, rounded or very bluntly pointed at the tip, and wedged-shaped at the base. Flowers are solitary or few fascicled, borne in the leaf axils, pale white, about 6 millimeters long. Corolla is salver-shaped, about 5 millimeters long, cylindric, with four tufts of hairs in the throat. Fruit is juicy, yellowish-red when ripe, broadly ovoid, and about 5 centimeters long.
- In mangrove swamps in Luzon (Quezon) and Polillo.
- Also occurs in Indo-China, the Malay Peninsula, Sumatra, Borneo, to the Solomon Islands and northern Australia.
- Contains flavonoids and tannins.
- Ethanol extract has yielded histone deacetylase inhibitors reported to have anticancer properties.
- Study of fine powders of young tubers isolated four compounds: sinapinic acid, β-sitosterol acetate, β-sitosterol and stigmasterol. (12)
- Tuber extracts yielded 22 elements: Be, Al, Ca, Cr, Mn, Fe, Zn, Ba, P, Li, Sr, Rb, Hg, Tl, In, Pb, Cd, As, Cs, Na, K and Mg. (see study below) (6)
- Phytochemical screening of ethanol extract of folium yielded
alkaloid, terpenoid, tannin, glycoside, and saponin; cortex yielded alkaloid, flavonoid, terpenoid, and glycoside. (15)
Tuber, woody base.
- Decoction of swollen, woody base used as remedy for liver and intestinal complaints.
- In the Dutch Indies, poultice of pounded tubers used for headaches.
- In Indonesia, used to treat swelling, headaches and rheumatism.
- Decoction of rhizomes used for cholera.
- In Thailand, used for the treatment of cancer.
• Antimicrobial / Antioxidative: Study isolated flavonoid and phenolic compounds: isoliquiritigenin, protocatechualdehyde, butin and butein. The ethyl acetate extract showed to be a potent antioxidant. and exhibited activity against many Gram-positive and Gram-negative bacteria. (2)
• Antioxidant: Study showed the high total phenolic content and strong DPPH radical-scavenging activity. (3)
• Antioxidant / Cytotoxicity: Study on cytotoxicity showed less cytotoxicity against all types of cancer lines but high antioxidant activity.
• Antioxidant Activity: Extract analysis yielded 22 elements: Be, Al, Ca, Cr, Mn, Fe, Zn, Ba, P, Li, Sr, Rb, Hg, Tl, In, Pb, Cd, As, Cs, Na, K and Mg. Bioactive ß-sitosterol was isolated from hexane and chloroform extracts. Significant radical scavenging activity was demonstrated with IC50 range of 8.40-8.79 µg/mL. (6)
• Antiproliferative Activity: Seventy-seven Vietnamese medicinal plants were studied for their antiproliferative activities against human HT-1080 fibrosarcoma cells. Fifteen extracts, including the methanol extract of Hydnophytum formicarum exhibited antiproliferative activities in a concentration-dependent manner. H. formicarum also showed selective activity against human tumor cell lines, He La and A549. Morphological changes and DNA fragmentation suggested induction of apoptosis. (7)
• Antiproliferative and HDAC (Histone deacetylase) Inhibitory Activity:: Study evaluated the ability of ethanolic and phenolic-rich extracts and its its major phenolic compound, sinapinic acid in inhibiting the proliferation of 5 human cancer cell lines. Results showed the rhizome extracts to possess both antiproliferative activity and HDAC activity in HeLa cells. Sinapinic acid inhibited the growth of HeLa and HT29 cells more effectively than sodium butyrate. The growth inhibitory effects were mediated by the induction of apoptosis. (8)
• Enhanced Lymphocyte Proliferation: Study evaluated the effects of H. formicarum on proliferation of mouse lymphyocyte, Vero and T47D's cell lines. Test extracts yielded flavonoid, phenolic, aldehyde/ ketone, terpenoids, and tannin. Extracts A and B increased lymphocyte proliferation by increasing concentration. Extract B showed highest inhibition against T47D cells. Both extracts could not enhance proliferation of Vero cells. (10)
• 3HFD / Cytotoxic to Human Breast Carcinoma
MCF-7 Cell Line: A flavanoid derivative, 7,3',5'-trihydroxyflavanone (3HFD) isolated from H. formicarum has shown cytotoxic effects of human breast carcinoma cell line MCF-7. This study showed 3HFD was able to induce apoptotic cell death of MCF-7 by increasing Bax expression level. Results suggest a potential for 3HFD as a chemotherapeutic agent. (11)
• Antioxidant / Antibacterial / Anticancer / Tubers: Study evaluated the antioxidant, antibacterial, and cytotoxicity potencies of H. formicarum tubers. A methanol fraction showed strong antioxidant property (>70%), strong antibacterial potency (inhibition > 12mm) and high cytotoxicity against MCF-7 cell lines (IC50<2µg/mL). (13)
• Anti-Quorum Sensing / Modulation of Ps. aeruginosa Pathogenicity: Study evaluated the ability of ethanol extract of H. formicarum tubers to antagonize cell-to-cell communication. Results showed inhibition of violacein production. There was inhibition of Ps. aeruginosa motility and biofilm formation. Results showed H. fornicamum is a potential source for new QS-based antibacterial drugs towards Pseudomonas aeruginosa. (14)