Isolation, Identification, Modification, and Biological Analysis of extracts of A. Mexicana

Argemone mexicana is a member of the Papaveraceae family of plants that has been used for centuries in traditional medicine by indigenous communities in Mexico and the United States. Through a collaborative project, we have explored separation of key components of the seeds and leaves of this plant to isolate the source of their biological activity. We have already identified two key molecules which give this plant anti-microbial properties against the gram-positive bacteria. Furthermore, we have chemically modified one of these molecules to observe variations on activity. We hope this leads to the discovery of new antibiotic drugs

Antimicrobial Activity and Germination Conditions of the Medicinal Plant \u3ci\u3eArgemone mexicana\u3c/i\u3e

Commonly called the Mexican prickly poppy, Argemone mexicanais a stress-resistant member of the Papaveraceae family of plants that has been used in traditional medicine for centuries by indigenous communities in Mexico and Western parts of the United States. This plant has been used to treat a wide variety of ailments, including skin diseases and intestinal infections, with reported antimicrobial properties. However, these properties are poorly understood and no bioactive compounds have yet been identified in the plant to account for this antimicrobial action. Herein, we describe the growth conditions and preliminarily characterize the antibiotic effects of different parts of the A. mexicana plant. We report that 2 mg of A. mexicanamethanol root extract possesses antibacterial activity against the bacteria Bacillus cereusand Staphylococcus aureus, while the same concentration has no inhibitory effect on the fungus Candida albicans. Moreover, the methanol root fraction displays a stronger antibacterial effect, when compared to either the methanol seed or leaf fractions at the same concentrations and normalized to background solvent alone. Additionally, we show that when supplemented with 1000 mg/L of the phytohormone gibberellic acid (GA), germination rates of A. mexicana are significantly increased when compared to germination with either no GA or 100 mg/L GA. These preliminary results warrant further research into defining the antimicrobial properties and chemicals produced in the roots of these plants and are especially significant given the growing global concern of antibiotic-resistant ‘superbugs’ and lack of new antimicrobial drug discovery

Antimicrobial Activity and Germination Conditions of the Medicinal Plant \u3ci\u3eArgemone mexicana\u3c/i\u3e

Commonly called the Mexican prickly poppy, Argemone mexicanais a stress-resistant member of the Papaveraceae family of plants that has been used in traditional medicine for centuries by indigenous communities in Mexico and Western parts of the United States. This plant has been used to treat a wide variety of ailments, including skin diseases and intestinal infections, with reported antimicrobial properties. However, these properties are poorly understood and no bioactive compounds have yet been identified in the plant to account for this antimicrobial action. Herein, we describe the growth conditions and preliminarily characterize the antibiotic effects of different parts of the A. mexicana plant. We report that 2 mg of A. mexicanamethanol root extract possesses antibacterial activity against the bacteria Bacillus cereusand Staphylococcus aureus, while the same concentration has no inhibitory effect on the fungus Candida albicans. Moreover, the methanol root fraction displays a stronger antibacterial effect, when compared to either the methanol seed or leaf fractions at the same concentrations and normalized to background solvent alone. Additionally, we show that when supplemented with 1000 mg/L of the phytohormone gibberellic acid (GA), germination rates of A. mexicana are significantly increased when compared to germination with either no GA or 100 mg/L GA. These preliminary results warrant further research into defining the antimicrobial properties and chemicals produced in the roots of these plants and are especially significant given the growing global concern of antibiotic-resistant ‘superbugs’ and lack of new antimicrobial drug discovery

Thyroid function in PMM2-CDG: diagnostic approach and proposed management.

Item does not contain fulltextGlycoproteins are essential in the production, transport, storage and regulation of thyroid hormones. Altered glycosylation has a potential impact on thyroid function. Abnormal thyroid function tests have been described in patients with congenital disorders of glycosylation. We evaluated the reliability of biochemical markers and investigated thyroid function in 18 PMM2-CDG patients. We propose an expectative therapeutic approach for neonates with thyroid abnormalities in CDG.1 april 201

ATP6AP1 deficiency causes an immunodeficiency with hepatopathy, cognitive impairment and abnormal protein glycosylation

The V-ATPase is the main regulator of intra-organellar acidification. Assembly of this complex has extensively been studied in yeast, while limited knowledge exists for man. We identified 11 male patients with hemizygous missense mutations in ATP6AP1, encoding accessory protein Ac45 of the V-ATPase. Homology detection at the level of sequence profiles indicated Ac45 as the long-sought human homologue of yeast V-ATPase assembly factor Voa1. Processed wild-type Ac45, but not its disease mutants, restored V-ATPase-dependent growth in Voa1 mutant yeast. Patients display an immunodeficiency phenotype associated with hypogammaglobulinemia, hepatopathy and a spectrum of neurocognitive abnormalities. Ac45 in human brain is present as the common, processed ∼40-kDa form, while liver shows a 62-kDa intact protein, and B-cells a 50-kDa isoform. Our work unmasks Ac45 as the functional ortholog of yeast V-ATPase assembly factor Voa1 and reveals a novel link of tissue-specific V-ATPase assembly with immunoglobulin production and cognitive function.status: publishe