Tatsuo Sakamoto

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BACKGROUND Cow's milk allergy is one of the most common food allergies among younger children. We investigated IgE antibodies to milk, and IgE and IgG4 antibodies to casein, α-lactalbumin and β-lactoglobulin in cow's milk allergic (CMA) and non-allergic (non-CMA) children in order to study their clinical usefulness. METHODS Eighty-three children with(More)
Airway eosinophilia is one of the key pathophysiologic features in asthma. The endothelial adhesion molecules, vascular cell adhesion molecule (VCAM-1) and intercellular adhesion molecule (ICAM-1), have previously been shown to play a crucial role in eosinophil recruitment into the inflamed airway. We have investigated the effects of dexamethasone on(More)
FOXP3 is required for the generation and function of CD4(+)CD25(+) regulatory T (Treg) cells. To elucidate the biological role of Treg cells, we used a monoclonal anti-FOXP3 antibody to examine the frequencies of Treg cells during child development. The percentages of CD4(+)CD25(+)FOXP3(+) T cells were constant shortly from after birth through adulthood.(More)
Capsaicin is the pungent principle in chili peppers and previous studies reported that topical application of capsaicin to patients with allergic and non-allergic rhinitis produced significant and long-lasting relief of symptoms. The capsaicin receptor (TRPV1, VR1) is a nociceptive transducer and the existence of TRPV1 in non-neuronal cells as well as(More)
We have investigated the effect of inhaled formoterol (0.75 mg/ml, 60 breaths) and salbutamol (25 mg/ml, 60 breaths) against airway microvascular leakage and bronchoconstriction induced by inhaled platelet-activating factor (PAF) and histamine in anaesthetized guinea pigs. Lung resistance (R L) was measured for 6 min after challenge, followed by measurement(More)
BACKGROUND/AIMS It remains elusive whether there is a crosstalk between Smad and mitogen-activated protein kinases (MAPKs) and whether it regulates cyclosporine A (CyA)-induced apoptosis in renal proximal tubular cells (RPTCs). METHODS The effect of CyA on nuclear translocation of Smad2/3 and MAPKs (measured by Western blotting or immunofluorescence) and(More)
Changes in gonadal and plasma concentrations of thyroid hormones were examined at various stages of maturation in chum salmon (Oncorhynchus keta) caught in the Bering Sea and the Bay of Alaska. Plasma concentrations of thyroxine (T4) were less than 5 ng ml−1, and those of 3,5,3′-triiodo-L-thyroxine (T3) were less than 2 ng ml−1 I in both males and females,(More)
Granulomatous inflammation is a process that involves mononuclear leukocytes as well as other inflammatory cells. The heterogeneity of its appearance may be due to the variety of cytokines and chemokines that are involved. In this study, we compared granuloma formation and bronchoalveolar leukocyte differential in the lungs of rats (2- and 8-wk-old) that(More)
BACKGROUND CpG oligodeoxynucleotides (CpG ODNs) are reported to protect against airway eosinophilia and hyperresponsiveness in animal models of asthma. However, little is known about the effects of CpG ODNs on house dust mites, one of the most common environmental allergens, causing allergic asthma. In the present study, we evaluated the immunomodulatory(More)
BACKGROUND A method for open food challenge test to determine food allergy has not been established in an evidence-based manner. METHODS We conducted an analysis of 438 open food challenges of raw milk (n=133, mean age 2.7+/-1.9 years), boiled egg white (n=216, 2.8+/-2.1 years) or udon noodles (n=89, 2.7+/-1.7 years) for the patients aged 1 year or more.(More)