Carnosine increases efficiency of temozolomide and irradiation treatment of isocitrate dehydrogenase-wildtype glioblastoma cells in culture

2019 ◽  
Vol 15 (32) ◽  
pp. 3683-3691
Author(s):  
Johannes Dietterle ◽  
Henry Oppermann ◽  
Annegret Glasow ◽  
Karsten Neumann ◽  
Jürgen Meixensberger ◽  
...  

Aim: The naturally occurring dipeptide carnosine (CAR) has been considered for glioblastoma therapy. As CAR also protects against ionizing irradiation (IR), we investigated whether it may counteract standard therapy consisting of postsurgery IR and treatment with temozolomide (TMZ). Materials & methods: Four isocitrate dehydrogenase-wildtype primary cell cultures were exposed to different doses of IR and different concentrations of TMZ and CAR. After exposure, viability under the different conditions and combinations of them was determined. Results: All cultures responded to treatment with TMZ and IR with reduced viability. CAR further decreased viability when TMZ and IR were combined. Conclusion: Treatment with CAR does not counteract glioblastoma standard therapy. As the dipeptide also protects nontumor cells from IR, it may reduce deleterious side effects of treatment.

Author(s):  
Emmanuel Tiyo Ayikobua ◽  
Josephine Kasolo ◽  
Keneth Iceland Kasozi ◽  
Ejike Daniel Eze ◽  
Abass Safiriyu ◽  
...  

AbstractBackgroundThe Phosphatase and tensin-induced putative kinase 1 (PINK1B9) mutant for Drosophila melanogaster is a key tool that has been used in assessing the pathology of Parkinsonism and its possible remedy. This research was targeted toward determining the effects of ethanolic extract of propolis, with levodopa therapy in the management of Parkinsonism.MethodThe PINK1B9 flies were divided into groups and fed with the different treatment doses of ethanoic extract of propolis. The treatment groups were subjected to 21 days of administration of propolis and the levodopa at different doses after which percentage climbing index, antioxidant activity and lifespan studies were done.ResultsPropolis alone improved motor activity, antioxidant and lifespan in Drosophila melanogaster than in PINK1 flies. Propolis in combination with levodopa significantly (P<0.05) improved physiological parameters at higher than lower concentrations in Parkinsonism Drosophila melanogaster demonstrating its importance in managing side effects associated with levodopa.ConclusionPropolis is a novel candidate as an alternative and integrative medicinal option to use in the management of Parkinsonism in both animals and humans at higher concentrations.


1979 ◽  
Vol 7 (6) ◽  
pp. 583-587 ◽  
Author(s):  
Thomas Roth ◽  
Elizabeth I Tietz ◽  
Milton Kramer ◽  
Mark Kaffeman

The present study evaluated the efficacy of 25 mg of quazepam, a new benzodiazepine hypnotic, in a population of chronic insomniacs. The results indicate that a single dose (25 mg) administered for one night was efficacious when measured both objectively by polysomnographic recording and subjectively by questionnaire with no reported side-effects. The change in the objective measures paralleled the direction of change in subjective measures. Sleep efficiency and sleep maintenance were improved without EEG changes in Stages 2, 3-4, and REM. Further study is needed to evaluate the effects of chronic administration of different doses of quazepam in chronic insomniacs.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
James D. Nowotny ◽  
Michael T. Connelly ◽  
Nikki Traylor‑Knowles

An amendment to this paper has been published and can be accessed via a link at the top of the paper.


APOPTOSIS ◽  
2013 ◽  
Vol 18 (4) ◽  
pp. 452-466 ◽  
Author(s):  
Christina Pfister ◽  
Heike Pfrommer ◽  
Marcos S. Tatagiba ◽  
Florian Roser

1988 ◽  
Vol 405 (1) ◽  
pp. 77-103 ◽  
Author(s):  
R C Boucher ◽  
C U Cotton ◽  
J T Gatzy ◽  
M R Knowles ◽  
J R Yankaskas

Cell ◽  
1978 ◽  
Vol 13 (4) ◽  
pp. 589-598 ◽  
Author(s):  
Robert V. Storti ◽  
Sharon J. Horovitch ◽  
Matthew P. Scott ◽  
Alexander Rich ◽  
Mary Lou Pardue

2013 ◽  
Vol 50 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Silvia Mercurio ◽  
Cristiano Di Benedetto ◽  
Michela Sugni ◽  
M. Daniela Candia Carnevali

1999 ◽  
Vol 35 (10) ◽  
pp. 593-598 ◽  
Author(s):  
John T. Buchanan ◽  
Jerome F. La Peyre ◽  
Richard K. Cooper ◽  
Terrence R. Tiersch

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