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It has been reported that pantothenic acid (vitamin B5) and panthenol, an alcohol derivative of pantothenic acid, have beneficial moisturizing effects on the skin. However, few studies have investigated the mechanism of action of pantothenic acid on skin tissues. We tried to clarify the role of pantothenic acid on skin function by using keratinocytes and fibroblasts. The depletion of pantothenic acid from the culture medium suppressed keratinocyte proliferation and promoted differentiation. Moreover, pantothenic acid depletion decreased the synthesis of keratinocyte growth factor and procollagen 4a2 in fibroblasts. These results suggest that pantothenic acid is essential for maintaining keratinocyte proliferation and differentiation.

01 Jan 2009·Journal of Veterinary Medical ScienceQ4 · AGRICULTURAL & FORESTRY SCIENCE

Effects of Pantothenic Acid on Testicular Function in Male Rats

Q4 · AGRICULTURAL & FORESTRY SCIENCE

Article

Author: AZUMANO, Isao ; JAROENPORN, Sukanya ; TAYA, Kazuyoshi ; NAKAMURA, Katsuhiro ; WATANABE, Gen ; PAN, Lingmei ; YAMAMOTO, Tatsuya ; ONDA, Masaaki

Pantothenic acid (PaA) is a water-soluble vitamin required to sustain various physiological functions in animals. The physiological roles of PaA on testicular function, in particular, testicular endocrinology and sperm mortility, were investigated in rats. Male rats at 3 weeks of age were fed a PaA-free diet or a 0.0016% PaA diet (control) for 7 weeks. Total body weight, as well as the weights of the liver, kidney, pituitary, testis, epididymis, seminal vesicle and prostate; sperm motility; and the plasma concentrations of luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone and corticosterone were measured in rats at 10 weeks of age. Body weight gain decreased from 5 weeks of age in rats fed the PaA-free diet compared with the control. The relative weights of the testes were significantly higher in the PaA-deficient group compared with the control group. Several parameters of sperm motility were significantly reduced in the PaA-deficient group compared with the control group. In addition, the plasma concentrations of testosterone and corticosterone were significantly lower in the PaA-deficient group compared with the control group, whereas the plasma concentrations of FSH and LH showed no change. These results clearly demonstrate that PaA is an essential factor in testicular endocrinology and sperm motility in male rats.

01 May 2008·Journal of Agricultural and Food ChemistryQ1 · AGRICULTURAL & FORESTRY SCIENCE

PCB 118 and Aryl Hydrocarbon Receptor Immunoassays for Screening Dioxins in Retail Fish

Q1 · AGRICULTURAL & FORESTRY SCIENCE

Article

Author: Maitani, Tamio ; Ashieda, Kazunori ; Sakata, Kazuto ; Kobayashi, Yasuo ; Amakura, Yoshiaki ; Okuyama, Akira ; Tanioka, Youhei ; Tsutsumi, Tomoaki ; Sasaki, Kumiko

The efficacy of a combination of two enzyme-linked immunosorbent assay (ELISA) kits was examined for screening the toxic equivalent (TEQ) concentrations of dioxins in retail fish. The coplanar PCB-EIA system, which is a competitive immunoassay specific for polychlorinated biphenyl (PCB) 118, was tested as a screening method for mono- ortho PCBs. The Ah immunoassay (Ah-I), which is an ELISA-based aryl hydrocarbon receptor binding assay, was analyzed for its screening ability for non- ortho PCBs, polychlorinated dibenzo- p-dioxins (PCDDs), and dibenzofurans (PCDFs). Dilution and recovery tests using purified fish extracts revealed no major interference of the matrix in the PCB-EIA and suggested that the matrix effect was minimized in the Ah-I. Finally, the results for the fish samples ( n = 20) showed a strong correlation between this method and high-resolution gas chromatography coupled to high-resolution mass spectrometry for the determination of the TEQ concentrations of mono- ortho PCBs ( r = 0.99) and non- ortho PCBs and PCDD/Fs ( r = 0.97). These data indicate that our method is suitable for screening retail fish to determine the TEQ concentrations of dioxins.

100 Deals associated with Daiichi Fine Chemical Co., Ltd.

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100 Translational Medicine associated with Daiichi Fine Chemical Co., Ltd.

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Pipeline

Pipeline Snapshot as of 25 Nov 2024

The statistics for drugs in the Pipeline is the current organization and its subsidiaries are counted as organizations,Early Phase 1 is incorporated into Phase 1, Phase 1/2 is incorporated into phase 2, and phase 2/3 is incorporated into phase 3

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Current Projects

Drug(Targets)	Indications	Global Highest Phase

FO-439	Neoplasms More	Discontinued
FO-152 ( TYMS )	Neoplasms More	Discontinued
NF-6505 ( thrombin )	Venous Thrombosis More	Discontinued
HFV-1017 ( PDE1 )	Thrombosis More	Discontinued
F-025 ( COX )	Thrombosis More	Discontinued