Previous studies with mast cell degranulating (MCD) peptide have shown that peptide [Ala]MCD 8 was an inhibitor of IgE binding to mast cell receptors. In an attempt to produce increased inhibition, analogs were synthesized that maintained the alanine residue in position 12 in the MCD peptide sequence and were further modified at both termini. Analogs modified at the C-terminus were [Ala,desLys]...

AMAcetyl-,-he,osanindases A andUwere purifled to homogeneityfromhuman placenta. 1n the imt'al step of purication, thfe enzymes were adsorbed on concanavalin ASepharose 4B and etuted from, the column with a-methyl D-mannoside. Subsequent purification steps includedc DEAE-cellulose column chromn-atography, QAE-Seph%adex Ediethyl-(2-hydroxypropyl)aminoethyl-Sephadex] column chromatography1 Sephade...

As a part of the study to explore the possible strategy for enhancing the shelf life of mango fruits, we investigated the changes in biochemical parameters and activities of ripening associated enzymes of Ashwina hybrid mangoes at 4-day regular intervals during storage at -10°C, 4°C, and 30 ± 1°C. Titratable acidity, vitamin C, starch content, and reducing sugar were higher at unripe state and ...

Insects require molting fluids to shed the old cuticle during molting. β-N-acetyl-D-hexosaminidase, known as Hex1, together with various chitinases, is responsible for degrading the chitin component of the old cuticle. This study showed that another β-N-acetyl-D-hexosaminidase, termed OfHex3, interacted with Hex1 and functioned in the molting fluid, although the homolog of OfHex3 was known as a...

Hemorrhagic shock (HS) is associated with cardiac contractile dysfunction. Mast cell (MC) degranulation is hypothesized to mediate the cardiodepressant effect. Cardiac function was assessed after HS and resuscitation (HS/R) with the administration of the MC stabilizers to prevent MC degranulation. Anesthetized male Sprague-Dawley rats were randomized to sham-operated control or HS/R groups and ...

The fruits of Foeniculum vulgare (Foeniculi Fructus) have been widely used in Chinese medicine as an antiemetic, ameliorating stomach ailments and as an analgesic. In order to establish its potential for antiallergic use, inhibitory actions of the fruiton 5-lipoxgenase (5-LOX) and β-hexosaminidase release were evaluated. The 70% ethanol extract of this plant material (FR) considerably inhibited...