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Researchers at Skaggs School of Pharmacy and Pharmaceutical Sciences at University of California San Diego and the University of Colorado Anschutz Medical Campus have found that compounds produced by the creosote bush, a desert plant common to the Southwestern United States, exhibit potent anti-parasitic activity against the protozoa responsible for giardia infections and an amoeba that causes an often-lethal form of encephalitis.
The findings, published online August 9 in PLOS Neglected Tropical Diseases, offer a starting point for widening the arsenal of antimicrobial agents, effective against deadly parasitic infections, scientists said.
The World Health Organization estimates giardiasis, a diarrheal illness, is linked to approximately 846,000 deaths around the world each year. Infection usually occurs through ingestion of contaminated water or food. Though rarely lethal in the U.S., it's estimated there are more than 1 million cases of giardiasis in the country annually. Standard treatment usually involves antibiotics and anti-parasitic drugs.
"The significance and intrigue of our study is that it shows the value of prospecting for new medicines from plants traditionally used by indigenous people as medicine," said co-principal investigator Anjan Debnath, PhD, an assistant adjunct professor at Skaggs School of Pharmacy and Pharmaceutical Sciences at UC San Diego.
The creosote bush (Larrea tridentata), also known as greasewood, or gobernadora in Spanish, is a tough evergreen bush with small waxy leaves, yellow flowers and a distinctive turpentine-like scent. Native Americans in both the U.S. and Mexico have long used the plant for a variety of ailments, including intestinal complaints. There is also an existing body of scientific work documenting the plant's pharmacologically active compounds, notably nordihydroguaiaretic acid (NDGA). NDGA has antiviral, antibacterial, anti-inflammatory and anticancer properties, and is a liver toxin at high doses.
The study is the first to show that NDGA and five other compounds (four lignans and one flavonoid) are active against the pathogenic protozoa Giardia lamblia and Naegleria fowleri.
Desert Plant Compound Could Treat 'Brain-Eating' Amoeba Infections
Which would make it cheaper to reproduce.
The findings, published online August 9 in PLOS Neglected Tropical Diseases, offer a starting point for widening the arsenal of antimicrobial agents, effective against deadly parasitic infections, scientists said.
The World Health Organization estimates giardiasis, a diarrheal illness, is linked to approximately 846,000 deaths around the world each year. Infection usually occurs through ingestion of contaminated water or food. Though rarely lethal in the U.S., it's estimated there are more than 1 million cases of giardiasis in the country annually. Standard treatment usually involves antibiotics and anti-parasitic drugs.
"The significance and intrigue of our study is that it shows the value of prospecting for new medicines from plants traditionally used by indigenous people as medicine," said co-principal investigator Anjan Debnath, PhD, an assistant adjunct professor at Skaggs School of Pharmacy and Pharmaceutical Sciences at UC San Diego.
The creosote bush (Larrea tridentata), also known as greasewood, or gobernadora in Spanish, is a tough evergreen bush with small waxy leaves, yellow flowers and a distinctive turpentine-like scent. Native Americans in both the U.S. and Mexico have long used the plant for a variety of ailments, including intestinal complaints. There is also an existing body of scientific work documenting the plant's pharmacologically active compounds, notably nordihydroguaiaretic acid (NDGA). NDGA has antiviral, antibacterial, anti-inflammatory and anticancer properties, and is a liver toxin at high doses.
The study is the first to show that NDGA and five other compounds (four lignans and one flavonoid) are active against the pathogenic protozoa Giardia lamblia and Naegleria fowleri.
Desert Plant Compound Could Treat 'Brain-Eating' Amoeba Infections
Which would make it cheaper to reproduce.
