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Moderate protective effect of Kyotorphin against the late consequences of intracerebroventricular streptozotocin model of Alzheimer's disease.
Amino Acids. 2019 Nov; 51(10-12):1501-1513.AA

Abstract

The established decrease in the level of endogenous kyotorphin (KTP) into the cerebrospinal fluid of patients with an advanced stage of Alzheimer's disease (AD) and the found neuroprotective activity of KTP suggested its participation in the pathophysiology of the disease. We aimed to study the effects of subchronic intracerebroventricular (ICV) treatment (14 days) with KTP on the behavioral, biochemical and histological changes in rats with streptozotocin (STZ-ICV)-induced model of sporadic AD (sAD). Three months after the administration of STZ-ICV, rats developed increased locomotor activity, decreased level of anxiety, impaired spatial and working memory. Histological data from the STZ-ICV group demonstrated decreased number of neurons in the CA1 and CA3 subfields of the hippocampus. The STZ-ICV group was characterized with a decrease of total protein content in the hippocampus and the prefrontal cortex as well as increased levels of the carbonylated proteins in the hippocampus. KTP treatment of STZ-ICV rats normalized anxiety level and regained object recognition memory. KTP abolished the protein loss in prefrontal cortex and decrease the neuronal loss in the CA3 subfield of the hippocampus. STZ-ICV rats, treated with KTP, did not show significant changes in the levels of the carbonylated proteins in specific brain structures or in motor activity and spatial memory compared to the saline-treated STZ-ICV group. Our data show a moderate and selective protective effect of a subchronic ICV administration of the dipeptide KTP on the pathological changes induced by an experimental model of sAD in rats.

Authors+Show Affiliations

Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 23, 1113, Sofia, Bulgaria.Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 23, 1113, Sofia, Bulgaria. pechlivanova@yahoo.com.Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 23, 1113, Sofia, Bulgaria.Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 23, 1113, Sofia, Bulgaria.Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 23, 1113, Sofia, Bulgaria.Faculty of Medicine, Sofia University, "St. Kliment Ohridski" 1, Kozyak Str., 1407, Sofia, Bulgaria.Department of Anatomy, Medical University-Sofia, St. Georgi Sofiyski Str. 1, 1431, Sofia, Bulgaria.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31520285

Citation

Angelova, Hristina, et al. "Moderate Protective Effect of Kyotorphin Against the Late Consequences of Intracerebroventricular Streptozotocin Model of Alzheimer's Disease." Amino Acids, vol. 51, no. 10-12, 2019, pp. 1501-1513.
Angelova H, Pechlivanova D, Krumova E, et al. Moderate protective effect of Kyotorphin against the late consequences of intracerebroventricular streptozotocin model of Alzheimer's disease. Amino Acids. 2019;51(10-12):1501-1513.
Angelova, H., Pechlivanova, D., Krumova, E., Miteva-Staleva, J., Kostadinova, N., Dzhambazova, E., & Landzhov, B. (2019). Moderate protective effect of Kyotorphin against the late consequences of intracerebroventricular streptozotocin model of Alzheimer's disease. Amino Acids, 51(10-12), 1501-1513. https://doi.org/10.1007/s00726-019-02784-5
Angelova H, et al. Moderate Protective Effect of Kyotorphin Against the Late Consequences of Intracerebroventricular Streptozotocin Model of Alzheimer's Disease. Amino Acids. 2019;51(10-12):1501-1513. PubMed PMID: 31520285.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Moderate protective effect of Kyotorphin against the late consequences of intracerebroventricular streptozotocin model of Alzheimer's disease. AU - Angelova,Hristina, AU - Pechlivanova,Daniela, AU - Krumova,Ekaterina, AU - Miteva-Staleva,Jeny, AU - Kostadinova,Nedelina, AU - Dzhambazova,Elena, AU - Landzhov,Boycho, Y1 - 2019/09/13/ PY - 2019/06/18/received PY - 2019/08/30/accepted PY - 2019/9/15/pubmed PY - 2020/5/6/medline PY - 2019/9/15/entrez KW - Alzheimer’s disease KW - Anxiety KW - Hippocampus KW - Kyotorphin KW - Memory SP - 1501 EP - 1513 JF - Amino acids JO - Amino Acids VL - 51 IS - 10-12 N2 - The established decrease in the level of endogenous kyotorphin (KTP) into the cerebrospinal fluid of patients with an advanced stage of Alzheimer's disease (AD) and the found neuroprotective activity of KTP suggested its participation in the pathophysiology of the disease. We aimed to study the effects of subchronic intracerebroventricular (ICV) treatment (14 days) with KTP on the behavioral, biochemical and histological changes in rats with streptozotocin (STZ-ICV)-induced model of sporadic AD (sAD). Three months after the administration of STZ-ICV, rats developed increased locomotor activity, decreased level of anxiety, impaired spatial and working memory. Histological data from the STZ-ICV group demonstrated decreased number of neurons in the CA1 and CA3 subfields of the hippocampus. The STZ-ICV group was characterized with a decrease of total protein content in the hippocampus and the prefrontal cortex as well as increased levels of the carbonylated proteins in the hippocampus. KTP treatment of STZ-ICV rats normalized anxiety level and regained object recognition memory. KTP abolished the protein loss in prefrontal cortex and decrease the neuronal loss in the CA3 subfield of the hippocampus. STZ-ICV rats, treated with KTP, did not show significant changes in the levels of the carbonylated proteins in specific brain structures or in motor activity and spatial memory compared to the saline-treated STZ-ICV group. Our data show a moderate and selective protective effect of a subchronic ICV administration of the dipeptide KTP on the pathological changes induced by an experimental model of sAD in rats. SN - 1438-2199 UR - https://www.unboundmedicine.com/medline/citation/31520285/Moderate_protective_effect_of_Kyotorphin_against_the_late_consequences_of_intracerebroventricular_streptozotocin_model_of_Alzheimer's_disease_ L2 - https://dx.doi.org/10.1007/s00726-019-02784-5 DB - PRIME DP - Unbound Medicine ER -