Lagolo is a coarse fern growing to a height of 2 meters. Rootstocks are stout, woody and scaly. Stipes are clustered, stout and glabrous, 30 to 50 centimeters long. Fronds are leathery, pinnate, 50 to 200 centimeters long. Leaflets are 20 to 50 centimeters long, 4 to 6 centimeters wide. Terminal part of the frond has fertile pinnae covered with brownish sporangia. Fertile upper pinnae are smaller than the lower sterile ones.
- Abundant in open mud flats, in mangrove swamps, and along tidal streams.
- Occasionally planted as an ornamental.
- Widely distributed in the tropics of both hemispheres.
- Phytochemical studies have yielded beta-sitosterol, alkaloid, flavonoids, phenolics, catechins, saponins, tannins.
- An ethanolic plant extract yielded reducing sugars, alkaloids, glycosides, tannins, flavonoids, gums, and terpenoids. (see study below)
- Petroleum ether, chloroform, ethyl acetate, and methanol
extracts of whole plant yielded triterpenoids, steroids, glycosides, saponins, alkaloids, flavonoids, and tannins.
- Considered emollient, vulnerary, febrifuge, purgative.
- Studies have suggested antibacterial, anti-inflammatory, and cytotoxic properties.
Leaves, roots, rhizomes.
• Rhizomes are used for the healing of stubborn ulcers.
• Leaves used topically as emollient.
• In Malaya and Borneo, powdered or grated rhizomes applied as paste to wounds and boils.
• In Sri Lanka fronds used as antidote for snake bites; rhizomes used for boils and wounds.
• In Kerala whole plant is used as styptic and anthelmintic, and as an astringent in hemorrhage.
• Fertile fronds, along with the roots, are applied to syphilitic ulcers.
• In Fiji, used for sore throat, chest pains and elephantiasis, for constipation and as purgative; also, as febrifuge.
• In Bangladesh, leaves used for cloudy urination in women.
• In Malaysia, used for wound healing.
• Litter used for cattle and roof thatching.
In a study of 16 listed Bangladeshi plants screened against human gastric, colon, and breast cancer cell lines, Acrostichum aureum showed the most potent selective cytotoxicity. (1)
Fronds were evaluated for phytochemical contents and antibacterial potential. Flavonoids and phenols were observed in various extracts. A methanol extract showed maximum activity towards Pseudomonas aeruginosa, a resistant strain to Amoxicillin and Chloramphenicol. (4)
An ethanol crude extract of root was evaluated for anti-inflammatory activity. Results showed significant anti-inflammatory activity in a carrageenan-induced edema in rats, comparable to results obtained with indomethacin. (7)
• Antioxidant / Analgesic:
Study of ethanolic plant extract showed significant free radical scavenging activity in DPPH both qualitatively and quantitatively. In acetic acid writhing test in Swiss albino mice, the plant showed statistically significant dose dependent analgesic activity (P<0.01). (see constituents above) (9)
• Wound Healing / Rhizomes:
Study evaluated Acrostichum aureum and A. speciosum in excisional wound models in rabbits. Based on wound contraction, epithelization period and histopathological study, the aqueous extract of rhizomes and leaves of A. aureum showed the best wound healing properties with more collagen and fibroblasts proliferation and complete epithelized cells. (10)
• Biosorption of Heavy Metal: Study evaluated the biosorption behavior of the mangrove fern A. aureum leaf biomass for the removal of heavy metals (Cu, Pb, Zn) from aqueous solution. Kinetic studies indicated the biosorption of heavy metal followed the pseudo second order. Study identified the potential of a new cost-effective and easily available bioadsorbent for removal of heavy metal ions from aqueous solution. (12)
• Phytoremediation of Antibiotic Contaminated Sediment: In Vietnam's coastal wetlands, antibiotic sediment of fluoroquinolones are often detected in former shrimp plants. Study investigated the potential of A. aureum and R. apiculata for phytoremediation of fluoroquinolones (ciprofloxacin and norfloxacin). The antibiotics were found mainly in roots. Results showed both AR and RA can be both valuable for phytoremediation of antibiotic-contaminated sediments. (13)
• Cytotoxicity Screening / Anti-Cancer Compounds: A. aureus showed low cytotoxicity against mouse fibroblast (IC50>2.5 mg/mL) but selective potent toxicity against cancer cells (IC50 0.2-2.3 mg/mL). Study isolated one compound from an n-hexane fraction and 12 compounds from the methanolic fraction. Of the 13 compounds, compounds 3, 4, 5, 6, and 13 showed cytotoxic activity, with di-(20methylheptyl)phthalate (compound 3) and (2S,3S)-sulfated pterosin C (compound 5) showing the most potent cytotoxicity against all tested cell lines. (14)
• Novel Cytotoxic Compounds: Study isolated 13 compounds. Three compounds (1, 2 and 5) were identified as novel natural products. Eight known compounds were isolated for the first time, viz. di-(2-methylheptyl) phthalate (3), (2S, 3S)-pterosin C (4), (2R)-pterosin P (7), tetracosane (6), quercetin-3-O-β-D-glucosyl-(6→1)-α-L-rhamnoside (9), quercetin-3-O-α-L-rhamnoside (10) and quercetin-3-O-α-L-rhamnosyl-7-O-β-D-glucoside (11), and patriscabratine (13). Compound 5 showed the most potent cytotoxicity against gastric and colon adenocarcinoma cells lines. The mode of action was through induction of apoptosis. (15)