scholarly journals Apoptotic Effect of Methylglyoxal in Pancreatic RINm5F Cells; Reversal by INGAP‐P

2018 ◽  
Vol 32 (S1) ◽  
Author(s):  
Kerald Gonzales ◽  
Jing Su ◽  
Sue Mungre
Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
PM Kustiawan ◽  
ET Arung ◽  
P Phuwapraisirisan ◽  
S Puthong ◽  
T Palaga ◽  
...  

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 142-OR
Author(s):  
MASAJI SAKAGUCHI ◽  
SHOTA OKAGAWA ◽  
SAYAKA KITANO ◽  
TATSUYA KONDO ◽  
EIICHI ARAKI

2018 ◽  
Vol 8 (3) ◽  
pp. 193 ◽  
Author(s):  
Rosa Martha Perez Gutierrez ◽  
Alethia Muñiz-Ramirez ◽  
Abraham Heriberto Garcia Campoy ◽  
Jose Maria Mota Flores ◽  
Sergio Odin Flores

Background: The health benefits of edible plants have been widely investigated and disseminated. However, only polyphenols have been found to have sufficient therapeutic potential to be considered in clinical trials. Fewer manuscripts have other applications such as prospective health benefits and disease treatment. Other components of edible plants are responsible for a range of other benefits including antimalarial, burns, flu, cancer, inflammation, diabetes, glycation, antimicrobial, prevention of neurodegeneration, analgesic, antimigraine activity, sedative activities, etc. Accordingly, the public needs to be informed of the potential edible plants have to act on different targets and maintain better control over diabetes compared to commercial drugs which can be toxic, have side effects, do not have the capacity to maintain blood glucose at normal levels, and do not protect the patient from the complications of diabetes over time. Consequently, edible plants, such as Apium graveolen, which have therapeutic targets on AGEs formation, are potentially a better alternative treatment for diabetes.Methods: The leaves of celery were extracted with methanol (CM). Polyphenols contents in CM were investigated by liquid chromatography-electrospray ionization mass. The ability of the compounds to inhibit formation of AGEs was evaluated in vitro models using formation of AGE fluorescence intensity, level of fructosamine, Nε-(carboxymethyl)lysine (CML), methylglyoxal (MG)-derived protein, and formation of amyloid cross β structure. Protein-oxidation was determined by thiol group and protein carbonyl content. Inhibition of MG-derived AGEs and MG-trapping ability were also measured. Additionally, insulin production was determined in methylglyoxal-treated pancreatic RINm5F cells assay. Results: Apigenin, kaempferol, apiin, rutin, caffeic acid, ferulic acid, chlorogenic acid, coumaroylquinic acid, and p-coumaric acid were the major polyphenols contained in CM. In all the model tests CM displayed potent AGE inhibitory activity, suggesting that CM delayed the three stages of glycation. Accordingly, the mechanisms of action of celery involving dicarbonyl trapping and breaking the crosslink structure in the AGEs formed may contribute to the protection of pancreatic RINm5F cells against MG conditions.Conclusion: These findings indicate that CM have an excellent anti-glycation effect which may be beneficial for future development of antiglycating agents for the treatment of diabetes.Keywords: Apium graveolens, anti-glycation, polyphenols methylglyoxal, insulin, pancreatic cells


2020 ◽  
Vol 26 ◽  
Author(s):  
Jun-Jie Tang ◽  
Shuang Feng ◽  
Xing-Dong Chen ◽  
Hua Huang ◽  
Min Mao ◽  
...  

: Neurological diseases bring great mental and physical torture to the patients, and have long-term and sustained negative effects on families and society. The attention to neurological diseases is increasing, and the improvement of the material level is accompanied by an increase in the demand for mental level. The p75 neurotrophin receptor (p75NTR) is a low-affinity neurotrophin receptor and involved in diverse and pleiotropic effects in the developmental and adult central nervous system (CNS). Since neurological diseases are usually accompanied by the regression of memory, the pathogenesis of p75NTR also activates and inhibits other signaling pathways, which has a serious impact on the learning and memory of patients. The results of studies shown that p75NTR is associated with LTP/LTD-induced synaptic enhancement and inhibition, suggest that p75NTR may be involved in the progression of synaptic plasticity. And its pro-apoptotic effect is associated with activation of proBDNF and inhibition of proNGF, and TrkA/p75NTR imbalance leads to pro-survival or pro-apoptotic phenomena. It can be inferred that p75NTR mediates apoptosis in the hippocampus and amygdale, which may affect learning and memory behavior. This article mainly discusses the relationship between p75NTR and learning memory and associated mechanisms, which may provide some new ideas for the treatment of neurological diseases.


2019 ◽  
Vol 15 (8) ◽  
pp. 883-891
Author(s):  
Syeda Abida Ejaz ◽  
Mariia Miliutina ◽  
Peter Langer ◽  
Aamer Saeed ◽  
Jamshed Iqbal

Background: Previously, we have identified 3,3′–carbonyl–bis(chromones) (1a-h, 5e) and 3–(5–(benzylideneamino)thiozol–3–yl)–2H–chromen–2–ones (7a-j) as potent inhibitors of tissue non-specific alkaline phosphatase (TNAP). The present study was designed to investigate the cytotoxic and pro-apoptotic effect of the said derivatives. Methods: The anti-proliferative effect of the derivatives was investigated in three cancer cell lines i.e., MCF-7, K-562, HeLa and normal BHK21 cells using MTT assay. The pro-apoptotic effect of the most potent derivatives was investigated by using flow cytometry, DAPI and PI staining and DNA binding studies. Results: Among all the screened compounds, 1f, 1d, 1c (from 3,3′–carbonyl–bis(chromones), 7c, 7h and 7i (from 3–(5–(benzylideneamino)thiozol–3–yl)–2H–chromen–2–ones) exhibited remarkable growth inhibitory effects. Compounds 1f and 7c were found to be the most potent cytotoxic derivatives against MCF-7; 1d and 7h inhibited most of the proliferation of K-562 cells, whereas 1c and 7i showed maximum growth inhibition in HeLa cells. The identified compounds exerted lower micromolar potency against the respective cell line with significant selectivity over the normal cells (BHK–21). The identified compounds also induced either G2 or S-phase arrest within the respective cancer cells, chromatin condensation and nuclear fragmentation, as well as maximum interaction with DNA. Conclusions: These results provide evidence that the characteristic chemical features of attached groups are the key factors for their anticancer effects and play a useful role in revealing the mechanisms of action in relation to the known compounds in future research programs.


Sign in / Sign up

Export Citation Format

Share Document