نتایج جستجو برای: papain
تعداد نتایج: 2487 فیلتر نتایج به سال:
INTRODUCTION Pathological changes of severe chronic allergic conjunctivitis are driven not only via acquired immunity but also via innate immunity. Type 2 immune response-initiating cytokines may play some roles as innate immunity-dependent components of the ocular surface inflammation. To investigate the involvement of type 2 immune response-initiating cytokines in innate immunity-dependent, p...
Method: Wistar rats were divided into two experimental groups (papain without surgery and papain with surgery) and three control groups (saline without surgery, saline with surgery and papain without mechanical ventilation). After approximately 40 days of endotracheal instillation of papain or saline solution, animals in the papain with surgery and saline with surgery groups were submitted to b...
Papain was irreversibly inhibited by 1,3-dibromoacetone, a reagent designed to react first with the active-site cysteine residue and subsequently with a second nucleophile. The molecular weight of the inhibited enzyme was indistinguishable from that of papain itself, and no evidence of dimeric or oligomeric species was found. The optical-rotatory-dispersion curves of chloroacetone-inhibited pap...
Papain was purified from spray-dried Carica papaya latex using aqueous two-phase system (ATPS). Then it was recovered from PEG phase by in situ immobilization or preparing cross-linked enzyme aggregates (CLEAs). The Plackett-Burman design and the central composite design (CCD) together with the response surface methodology (RSM) were used to optimize the APTS processes. The highly purified papa...
Environmental allergen sources such as house dust mites contain proteases, which are frequently allergens themselves. Inhalation with the exogenous a model of protease allergen, papain, to airways evokes release and activation IL-33, promotes innate adaptive allergic airway inflammation Th2 sensitization in mice. Here, we examine whether epicutaneous (e.c.) vaccination antigens without activity...
Four solidification methods for self-emulsifying drug delivery systems (SEDDS) were compared to evaluate the impact of on storage stability an incorporated protein. Papain was loaded in SEDDS via hydrophobic ion pairing (HIP). Liquid (l-SEDDS) either solidified by adsorption solid excipients such as magnesium-aluminometasilicate wet granulation (ssilica-SEDDS) and carbohydrates lyophilisation (...
A considerable nurnber oí substances have been studied as possible activators íor papain. These studies led to the developrnent oí theories on the mode oí action oí these activators. As we íound sodjurn thiosulfate to be a potent activator íor papain and especially suitable íor the study oí the activation reaction, we shall present here sorne oí OUT results. Moreover, thiosulfate rnay have sorn...
The binary mixture tablets of papain and microcrystalline cellulose (MCC), dicalcium phosphate dihydrate (DCP), carrageenan, tragacanth, and agar were prepared by direct compression. Carrageenan, tragacanth, and agar provided maximum protection to enzyme activity compared to MCC and DCP. However, stability studies indicated highest loss of enzyme activity with carrageenan, tragacanth, and agar....
Quantifying tetrahedral adduct formation and stabilization in the cysteine and the serine proteases.
Two new papain inhibitors have been synthesized where the terminal α-carboxyl groups of Z-Phe-Ala-COOH and Ac-Phe-Gly-COOH have been replaced by a proton to give Z-Phe-Ala-H and Ac-Phe-Gly-H. We show that for papain, replacing the terminal carboxylate group of a peptide inhibitor with a hydrogen atom decreases binding 3-4 fold while replacing an aldehyde or glyoxal group with a hydrogen atom de...
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