Mamoru Kiniwa

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Previous studies on the production of interleukin-12 (IL-12) have shown that it is released, together with other proinflammatory cytokines, shortly after exposure of phagocytic cells to a variety of pathogens. We here report that IL-12 is also released during the recall response to soluble antigen (Ag) devoid of intrinsic adjuvant activity. We show that(More)
A major difference between "naive" and "memory" or "effector" Th cells is the spectrum of cytokines that they are capable of producing. After stimulation naive cells produce only IL-2, whereas memory cells produce several cytokines including IFN-gamma and IL-4. Using umbilical cord blood-derived CD4 T cells as a source of naive T cells, we first report that(More)
The glucocorticoid receptor regulates gene expression mainly by two mechanisms; transactivation and trans-repression. A ligand with strong transrepression and weak transactivation activity is predicted to be a beneficial agent with potent anti-inflammatory activity and minor adverse effects. Recently, the profile of a synthetic steroid, RU24858, has been(More)
AIMS Gastroesophageal reflux disease is considered to be caused primarily by gastric juice refluxed into the esophagus. Here, we investigated the possible involvement of host defense mechanisms in the development of acute reflux esophagitis using lafutidine, a histamine H(2) receptor antagonist (H(2)RA) with proven gastric mucosal protective effects. (More)
BACKGROUND Recently, alpha(1)-adrenoceptors (alpha(1)-ARs) have been reported to play a prominent role in the growth of a variety of cells; however, little is known about prostate growth and subtype-specific effects on cell proliferation. We examined the role of alpha(1d)-AR in prostate growth and the effect of subtype-selective alpha(1)-AR antagonist,(More)
In this study, combination therapies using the oral fluoropyrimidine tegafur-gimeracil-oteracil (S-1) with several targeted agents or antibodies, were evaluated. First, the effects of tyrosine kinase inhibitors (erlotinib hydrochloride, sorafenib tosilate and sunitinib malate) against human non-small cell lung cancer (NSCLC), breast cancer and colorectal(More)
Gastric acid secretion during the daytime has been implicated in the pathogenesis of acid-related diseases. Although daytime acid secretion is mainly governed by the parasympathetic vagal nerve, clinical observations have been accumulated that the H(2)-receptor antagonist lafutidine may have a strong effect. Here, we examined the actions of H(2)-receptor(More)
PURPOSE We examined the change in α(1)-adrenoceptor subtype expression in the prostate due to chronic tamsulosin administration in a benign prostatic hyperplasia rat model and in patients. MATERIALS AND METHODS We measured α(1)-adrenoceptor subtype expression after tamsulosin administration in the prostate of the benign prostatic hyperplasia rat model(More)
Late phase allergic response has been implicated in the pathogenesis of allergic diseases. In the current study, we investigated the role of IL-4, IL-5 and mast cells in the development of cutaneous late phase reaction (LPR) in mice. Antigenic challenge of ears of ovalbumin (OVA)-immunized BALB/c mice caused a biphasic ear swelling peaking at 1 hr(More)
Amplification of human epidermal growth factor receptor 2 (HER2) has been detected in 20% to 30% of gastric cancers and is associated with a poor outcome. Combination therapies with HER2-targeting agents and cytotoxic agents are considered a potential therapeutic option for gastric cancer with HER2 amplification. We have now investigated the effects of(More)