p38 Mitogen-Activated Protein Kinases

Publication Title: 
Biogerontology

The premature ageing ataxia telangiectasia (AT) and Werner syndromes (WS) are associated with accelerated cellular ageing. Young WS fibroblasts have an aged appearance and activated p38 MAP kinase, and treatment with the p38 inhibitor SB230580 extends their lifespan to within the normal range. SB203580 also extends the replicative lifespan of normal adult dermal fibroblasts, however, the effect is much reduced when compared to WS cells, suggesting that WS fibroblasts undergo a form of stress-induced premature senescence (SIPS).

Author(s): 
Davis, Terence
Kipling, David
Publication Title: 
Molecular Immunology

Neutrophils are major cells participants in innate host responses. They are short-lived leukocytes, although microbial products activate intracellular signaling cascades that prolong their survival by inhibiting constitutive apoptosis. To gain insight into the phylogeny of this important cell type, we examined the ability of toll-like receptor agonists to extend the lifespan of gilthead seabream (Sparus aurata L.) acidophilic granulocytes, which are the functional equivalent of mammalian neutrophils.

Author(s): 
Sepulcre, MarÌa P.
LÛpez-MuÒoz, Azucena
Angosto, Diego
GarcÌa-Alcazar, Alicia
Meseguer, JosÈ
Mulero, Victoriano
Publication Title: 
Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et MÈtabolisme

Compounds that delay aging in model organisms may be of significant interest to antiaging medicine, since these substances potentially provide pharmaceutical approaches to promote healthy lifespan in humans. The aim of the study was to test whether pharmaceutical concentrations of the glycolytic inhibitor lonidamine are capable of extending lifespan in a nematodal model organism for aging processes, the roundworm Caenorhabditis elegans. Several hundreds of adult C. elegans roundworms were maintained on agar plates and fed E. coli strain OP50 bacteria.

Author(s): 
Schmeisser, S.
Zarse, K.
Ristow, M.
Publication Title: 
Journal of Ethnopharmacology

ETHNOPHARMACOLOGICAL RELEVANCE: Eucommia ulmoides Oliv. Bark. (EUE), has commonly been used to fortify the muscles and lungs, lower blood pressure, prevent miscarriage, improve the tone of liver and kidneys, and promote longevity the traditional tonic medicines of Korea, China, and Japan. AIM OF THE STUDY: In this study, we investigated that the neuroprotective activities and possible mechanisms of EUE aqueous extract in hydrogen peroxide (H(2)O(2))-induced neuronal cell death in human SH-SY5Y neuroblastoma cells.

Author(s): 
Kwon, Seung-Hwan
Kim, Min-Jung
Ma, Shi-Xun
You, In-Jee
Hwang, Ji-Young
Oh, Ji-Hwan
Kim, Sun-Yeou
Kim, Hyoung-Chun
Lee, Seok-Yong
Jang, Choon-Gon
Publication Title: 
Biogerontology

Lactobacilli and bifidobacteria are probiotic bacteria that modify host defense systems and have the ability to extend the lifespan of the nematode Caenorhabditis elegans. Here, we attempted to elucidate the mechanism by which bifidobacteria prolong the lifespan of C. elegans. When the nematode was fed Bifidobacterium infantis (BI) mixed at various ratios with the standard food bacterium Escherichia coli strain OP50 (OP), the mean lifespan of worms was extended in a dose-dependent manner. Worms fed BI displayed higher locomotion and produced more offspring than control worms.

Author(s): 
Komura, Tomomi
Ikeda, Takanori
Yasui, Chikako
Saeki, Shigeru
Nishikawa, Yoshikazu
Publication Title: 
Cell Reports

Intermittent fasting is one of the most effective dietary restriction regimens that extend life span in C. elegans and mammals. Fasting-stimulus responses are key to the longevity response; however, the mechanisms that sense and transduce the fasting stimulus remain largely unknown. Through a comprehensive transcriptome analysis in C. elegans, we find that along with the FOXO transcription factor DAF-16, AP-1 (JUN-1/FOS-1) plays a central role in fasting-induced transcriptional changes. KGB-1, one of the C. elegans JNKs, acts as an activator of AP-1 and is activated in response to fasting.

Author(s): 
Uno, Masaharu
Honjoh, Sakiko
Matsuda, Mitsuhiro
Hoshikawa, Haruka
Kishimoto, Saya
Yamamoto, Tomohito
Ebisuya, Miki
Yamamoto, Takuya
Matsumoto, Kunihiro
Nishida, Eisuke
Publication Title: 
Acta Pharmacologica Sinica

AIM: To elucidate the anti-inflammatory potentials and underlying mechanisms of SM905, a novel artemisinin derivative, in lipopolysaccharide (LPS)-stimulated murine macrophage RAW 264.7 cells. METHODS: Nitric oxide (NO) generation, cytokine production, and the protein expression levels of inducible nitric-oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were examined using a Griess assay, an enzyme-linked immunosorbent assay (ELISA) and a Western blotting assay, respectively. The mRNA expression was measured using real-time PCR.

Author(s): 
Wang, Jun-Xia
Hou, Li-Fei
Yang, Yang
Tang, Wei
Li, Ying
Zuo, Jian-ping
Publication Title: 
PloS One

Malarial pigment (natural haemozoin, HZ) is a ferriprotoporphyrin IX crystal produced by Plasmodium parasites after haemoglobin catabolism. HZ-fed human monocytes are functionally compromised, releasing increased amounts of pro-inflammatory molecules, including cytokines, chemokines and cytokine-related proteolytic enzyme Matrix Metalloproteinase-9 (MMP-9), whose role in complicated malaria has been recently suggested. In a previous work HZ was shown to induce through TNFalpha production the release of monocytic lysozyme, an enzyme stored in gelatinase granules with MMP-9.

Author(s): 
Polimeni, Manuela
Valente, Elena
Aldieri, Elisabetta
Khadjavi, Amina
Giribaldi, Giuliana
Prato, Mauro
Publication Title: 
Acta Medica Okayama

We studied the effects of natural essential oil on neurite outgrowth in PC12m3 neuronal cells to elucidate the mechanism underlying the action of the oils used in aromatherapy. Neurite outgrowth can be induced by nerve growth factor (NGF), where ERK and p38 MAPK among MAPK pathways play important roles in activating intracellular signal transduction. In this study, we investigated whether d-limonene, the major component of essential oils from oranges, can promote neurite outgrowth in PC12m3 cells, in which neurite outgrowth can be induced by various physical stimulations.

Author(s): 
Shinomiya, Misae
Kawamura, Kenji
Tanida, Emiko
Nagoshi, Megumi
Motoda, Hirotoshi
Kasanami, Yoshiko
Hiragami, Fukumi
Kano, Yoshio
Publication Title: 
PloS One

The medicinal plant Withania somnifera has been used for over centuries in Indian Ayurvedic Medicine to treat a wide spectrum of disorders. Withaferin A (WA), a bioactive compound that is isolated from this plant, has anti-inflammatory, immuno-modulatory, anti-angiogenic, and anti-cancer properties. Here we investigated malignant pleural mesothelioma (MPM) suppressive effects of WA and the molecular mechanisms involved.

Author(s): 
Yang, Huanjie
Wang, Ying
Cheryan, Vino T.
Wu, Wenjuan
Cui, Cindy Qiuzhi
Polin, Lisa A.
Pass, Harvey I.
Dou, Q. Ping
Rishi, Arun K.
Wali, Anil

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