Mice lacking histidine decarboxylase exhibit abnormal mast cells

…, L Hellman, M Gertsenstein, N Hirasawa… - FEBS …, 2001 - Wiley Online Library
Histidine decarboxylase (HDC) synthesizes histamine from histidine in mammals. To evaluate
the role of histamine, we generated HDC‐deficient mice using a gene targeting method. …

[HTML][HTML] Reduced pain hypersensitivity and inflammation in mice lacking microsomal prostaglandin e synthase-1

…, S Oh-Ishi, H Yasui, Y Azuma, N Hirasawa… - Journal of Biological …, 2004 - ASBMB
We examined the in vivo role of membrane-bound prostaglandin E synthase (mPGES)-1, a
terminal enzyme in the PGE 2 -biosynthetic pathway, using mPGES-1 knockout (KO) mice. …

The role of histamine H1 and H4 receptors in atopic dermatitis: from basic research to clinical study

Y Ohsawa, N Hirasawa - Allergology International, 2014 - jstage.jst.go.jp
Histamine plays important roles in inflammation and nervous irritability in allergic disorders,
including atopic dermatitis (AD). It has been shown to regulate the expression of pruritic …

[HTML][HTML] The accelerating effect of histamine on the cutaneous wound-healing process through the action of basic fibroblast growth factor

Y Numata, T Terui, R Okuyama, N Hirasawa… - Journal of Investigative …, 2006 - Elsevier
This study revealed that the absence of histamine in histidine decarboxylase gene-knockout
(HDC −/− ) mice resulted in delayed cutaneous wound healing and that exogenously …

[HTML][HTML] Expression of histidine decarboxylase and its roles in inflammation

N Hirasawa - International journal of molecular sciences, 2019 - mdpi.com
Histamine is a well-known mediator of inflammation that is released from mast cells and
basophils. To date, many studies using histamine receptor antagonists have shown that …

Novel roles of CpG oligodeoxynucleotides as a leader for the sampling and presentation of CpG-tagged antigen by dendritic cells

H Shirota, K Sano, N Hirasawa, T Terui… - The Journal of …, 2001 - journals.aai.org
Oligodeoxynucleotides containing CpG motifs have been highlighted as potent Th1 activators.
We previously reported that Ag and CpG, when conjugated together, synergistically …

[HTML][HTML] Defective angiogenesis in the inflammatory granulation tissue in histidine decarboxylase–deficient mice but not in mast cell–deficient mice

AK Ghosh, N Hirasawa, H Ohtsu… - The Journal of …, 2002 - ncbi.nlm.nih.gov
We have analyzed the role of histamine in the angiogenesis of the granulation tissue in
histidine decarboxylase–deficient (HDC−/−) mice, mast cell–deficient mice (WBB6F1-W/WV), …

Effects of hyperin, isoquercitrin and quercetin on lipopolysaccharide‐induced nitrite production in rat peritoneal macrophages

…, YP Kim, K Ishihara, N Hirasawa… - … Journal Devoted to …, 2008 - Wiley Online Library
The extract of the root of Acanthopanax chiisanensis Nakai is used for the treatment of
inflammation. To analyse the action mechanism of this extract, the effect of hyperin (quercetin‐3‐O…

Activation of the mitogen-activated protein kinase/cytosolic phospholipase A2 pathway in a rat mast cell line. Indications of different pathways for release of …

N Hirasawa, F Santini, MA Beaven - Journal of immunology …, 1995 - journals.aai.org
The role of mitogen-activated protein (MAP) kinase in the release of arachidonic acid was
examined in a mutated mast cell (RBL-2H3(m1)) line that expressed both native Fc epsilon R1 …

Association between cancer risk and drug-metabolizing enzyme gene (CYP2A6, CYP2A13, CYP4B1, SULT1A1, GSTM1 and GSTT1) polymorphisms in cases of lung …

…, S Kanno, M Ishikawa, N Hirasawa… - Drug metabolism and …, 2011 - Elsevier
Genetic polymorphisms of enzymes involved in the metabolism of carcinogens are suggested
to modify an individual’s susceptibility to lung cancer. The purpose of this study was to …