Water-soluble low-molecular-weight b-(1, 3–1, 6) D-Glucan inhibit cedar pollinosis
Journal Title: Functional Foods in Health and Disease - Year 2015, Vol 5, Issue 2
Abstract
Background: The incidences of allergenic diseases such as allergenic rhinitis, atopic dermatitis, asthma, and food allergies have increased in several countries. Mast cells have critical roles in various biological processes related to allergenic diseases. Mast cells express the high-affinity receptor for immunoglobulin (Ig) E on their surface. The interaction of multivalent antigens with surface-bound IgE causes the secretion of granule-stored mediators, as well as the de novo synthesis of cytokines. Those mediators and cytokines proceed the allergenic diseases. We investigated the effects of water-soluble, low-molecular-weight b-(1, 3–1, 6) D-glucan isolated from Aureobasidium pullulans 1A1 strain black yeast (LMW-b-glucan) on mast cell-mediated anaphylactic reactions. We reported that LMW-b-glucan dose-dependently inhibited the degranulation of mast cells. Furthermore, we found that orally administered LMW-b-glucan inhibited the IgE-mediated passive cutaneous anaphylaxis (PCA) reaction in mice. Here, we examined if LMW-b-glucan had any effects on Japanese cedar pollinosis. Findings: In a clinical study, a randomized, single-blind, placebo-controlled, parallel group study in 65 subjects (aged 22-62) was performed. This study was undertaken 3 weeks before the cedar pollen season and until the end of the cedar pollen season. During the study, all subjects consumed one bottle of placebo or LMW-b-glucan daily, and all subjects were required to record allergenic symptoms in a diary. The LMW-b-glucan group had a significantly lower prevalence of sneezing, nose-blowing, tears, and hindrance to the activities of daily living than the placebo group. Conclusions: These results suggest that LMW-b-glucan could be an effective treatment for allergenic diseases.
Antioxidant, ACE-Inhibitory and Antimicrobial Activities of Kluyveromyces marxianus Protein Hydrolysates and Their Peptide Fractions
Background: There has been some evidence that proteins are potentially excellent source of antioxidants, antihypertensive and antimicrobial peptides and enzymatic hydrolysis is an effective method to release these peptid...
Nutritional components of the sea cucumber Holothuria scabra
Background: Holothuria scabra is one of the most commercially important species found in the Pacific region. The sea cucumber extracts have been widely reported to have beneficial health effects. The aim of this study wa...
Effect of some Tropical Eggplant Fruits (Solanum Spp) Supplemented Diet On Diabetic Neuropathy In Experimental male Wistar Rats In-vivo
Background: Solanum known as eggplant is a popular vegetable crop grown in the subtropics and tropics. Eggplant is a perennial but grown commercially as an annual crop. The fruits of eggplant is primarily used as a cooki...
Effects and safety of daily ingestion of plum extract on blood pressure: randomized, double-blinded, placebo-controlled parallel group comparison study
Background: Hypertension is an increasing health issue in Japan. Plums are widely consumed in Japan and are reported to have various health benefits, including improvements to blood flow. However, clinical trials investi...
Induction of apoptosis by fucoidan isolated from a traditional food, Saccharina longissima, in U937 human leukemia cells
Background: A brown seaweed, Saccharina longissima (Laminaria angustata var. longissima) has been consumed in Okinawa for 300 years. It is native to the southernmost part of Japan, in Okinawa, but grows on the Pacific co...