ananas/protease

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Allergic reactions, including asthma, to the pineapple protease bromelain following occupational exposure.

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A 58-year-old pharmaceutical worker regularly developed asthma and rhinitis when handling bromelain, a purified protease of pineapple (Ananas comosus), at her work-place, where she had been employed for about 10 years. RAST and prick test showed strong positive reactions to bromelain. Both

Bromelain, a cysteine protease from pineapple (Ananas comosus) stem, is an inhibitor of fungal plant pathogens.

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OBJECTIVE This study aimed to evaluate the effect of bromelain, a cysteine protease isolated from pineapple (Ananas comosus), on growth of several agronomically important fungal pathogens. RESULTS Purification of bromelain from pineapple stems was carried out by chromatography techniques, and its

Inhibitory effects of bromelain, a cysteine protease derived from pineapple stem (Ananas comosus), on intestinal motility in mice.

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BACKGROUND Bromelain (BR) is a cysteine protease with inhibitory effects on intestinal secretion and inflammation. However, its effects on intestinal motility are largely unexplored. Thus, we investigated the effect of this plant-derived compound on intestinal contractility and transit in

Purification and characterization of a pineapple crown leaf thiol protease.

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A thiol protease was isolated and purified from the crown leaf of pineapple, Ananas comosus (L.) Merr. cv. Queen, by an immunoaffinity procedure. After the purification to electrophoretic homogeneity, the enzyme was characterized with respect to some of its physico-chemical and kinetic properties.

Primary structural analysis of sulfhydryl protease inhibitors from pineapple stem.

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Pineapple stem acetone powder provides a rich source of the sulfhydryl protease bromelain and of a family of compositionally similar but chromatographically distinct polypeptide inihibtors of this enzyme. The isoinhibitors have molecular weights of 5600, and they contain five disulfide bonds and

Heterologous expression of the plant cysteine protease bromelain and its inhibitor in Pichia pastoris.

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Expression of proteases in heterologous hosts remains an ambitious challenge due to severe problems associated with digestion of host proteins. On the other hand, proteases are broadly used in industrial applications and resemble promising drug candidates. Bromelain is an herbal drug that is

Complete amino acid sequence of ananain and a comparison with stem bromelain and other plant cysteine proteases.

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The amino acid sequences of ananain (EC3.4.22.31) and stem bromelain (3.4.22.32), two cysteine proteases from pineapple stem, are similar yet ananain and stem bromelain possess distinct specificities towards synthetic peptide substrates and different reactivities towards the cysteine protease

Reverse zymography alone does not confirm presence of a protease inhibitor.

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Reverse zymography is applied for identification and semi-quantification of protease inhibitors that are of protein in nature. However, a protein that shows band in reverse zymography against a protease used for digestion of the gel need not be an inhibitor; it might be resistant to degradation by

Acute protease supplementation effects on muscle damage and recovery across consecutive days of cycle racing.

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Bromelain, a mixture of proteases obtained from pineapples, has been demonstrated to reduce exercise-induced muscle damage and inflammation, enhancing recovery. This investigation aimed to establish if markers of muscle damage and testosterone were influenced by acute bromelain supplementation in

Molecular Cloning and Docking of speB Gene Encoding Cysteine Protease With Antibiotic Interaction in Streptococcus pyogenes NBMKU12 From the Clinical Isolates.

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Streptococcus pyogenes causes a variety of diseases ranging from mild diseases to severe invasive infections which result in significant morbidity and mortality. This study focuses on the antibiotic resistance of S. pyogenes and their interaction with cysteine protease. Around 36 beta-hemolytic

Plant proteases for bioactive peptides release: A review.

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Proteins are a potential source of health-promoting biomolecules with medical, nutraceutical, and food applications. Nowadays, bioactive peptides production, its isolation, characterization, and strategies for its delivery to target sites are a matter of intensive research. In vitro and in vivo

Oral administration of protease inhibits enterotoxigenic Escherichia coli receptor activity in piglet small intestine.

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The virulence of enterotoxigenic Escherichia coli (ETEC) is attributed to their ability to adhere via fimbrial adhesins to specific receptors located on the intestinal mucosa. A novel approach to preventing ETEC induced diarrhoea would be to prevent attachment of ETEC to intestine by proteolytically

Plant Protease Inhibitors in Therapeutics-Focus on Cancer Therapy.

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Plants are known to have many secondary metabolites and phytochemical compounds which are highly explored at biochemical and molecular genetics level and exploited enormously in the human health care sector. However, there are other less explored small molecular weight proteins, which inhibit

Bromelain proteases reduce human platelet aggregation in vitro, adhesion to bovine endothelial cells and thrombus formation in rat vessels in vivo.

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The thiol protease, bromelain, an extract from pineapple stem, was suggested to have antithrombotic and anticoagulant activities in vivo. We studied the effects of bromelain on cell size distribution of isolated human platelets in vitro by Coulter Counter measurements. Preincubation of platelets

Comparative analysis on the distribution of protease activities among fruits and vegetable resources.

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In this study, a comparative analysis on the distribution of protease activities among 90 plant resources, including fruits and vegetables, has been performed. Protease activities of plant extracts were assayed at different pH values (pH 3.0, pH 7.5 and pH 10.5) using casein as a substrate. Ten

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