Abstract
Alzheimer’s disease (AD), the most common form of dementia, is pathologically characterized by the deposition of amyloid-β plaques and the formation of neurofibrillary tangles. In a neurodegenerative brain, glucose metabolism is also impaired and considered as one of the key features in AD patients. The impairment causes a reduction in glucose transporters and the uptake of glucose as well as alterations in the specific activity of glycolytic enzymes. Recently, it has been reported that α-amylase, a polysaccharide-degrading enzyme, is present in the human brain. The enzyme is known to be associated with various diseases such as type 2 diabetes mellitus and hyperamylasaemia. With this information at hand, we hypothesize that α-amylase could have a vital role in the demented brains of AD patients. This review aims to shed insight into the possible link between the expression levels of α-amylase and AD. Lastly, we also cover the diverse role of amylase inhibitors and how they could serve as a therapeutic agent to manage or stop AD progression.
Keywords: Alzheimer’s disease, biomarker, drug target, alpha-amylase, enzyme inhibitor, amyloid-beta, neurological disorders, drug repurposing.
Graphical Abstract
[http://dx.doi.org/10.1016/j.jalz.2012.11.007]
[http://dx.doi.org/10.1016/j.jalz.2015.02.003] [PMID: 25984581]
[http://dx.doi.org/10.1016/S0140-6736(96)10203-8] [PMID: 9167474]
[http://dx.doi.org/10.1212/CON.0000000000000687] [PMID: 30707186]
[http://dx.doi.org/10.1159/000358232] [PMID: 25138979]
[http://dx.doi.org/10.1111/ggi.12557] [PMID: 26246377]
[http://dx.doi.org/10.1016/j.dadm.2017.01.005] [PMID: 28275702]
[http://dx.doi.org/10.3389/fnins.2018.00383] [PMID: 29950970]
[http://dx.doi.org/10.2337/dc17-0330] [PMID: 28842522]
[http://dx.doi.org/10.1016/j.arr.2019.100944] [PMID: 31430566]
[http://dx.doi.org/10.3389/fnins.2019.00629] [PMID: 31275108]
[http://dx.doi.org/10.2337/dc15-2800] [PMID: 27385328]
[http://dx.doi.org/10.1007/BF00308809] [PMID: 1759558]
[http://dx.doi.org/10.1016/j.ijbiomac.2018.02.138] [PMID: 29481953]
[http://dx.doi.org/10.1016/j.surg.2016.01.005] [PMID: 27117578]
[http://dx.doi.org/10.1038/s41598-019-41420-w] [PMID: 30894656]
[http://dx.doi.org/10.1016/j.ibmb.2016.06.003] [PMID: 27312592]
[http://dx.doi.org/10.1007/s11892-016-0794-7] [PMID: 27640169]
[PMID: 17244479]
[http://dx.doi.org/10.7860/JCDR/2013/7574.3634] [PMID: 24392426]
[PMID: 33384841]
[http://dx.doi.org/10.1177/10454411930040030701] [PMID: 8373987]
[http://dx.doi.org/10.5937/tmg2001068J]
[http://dx.doi.org/10.7175/cmi.v15i1.1493]
[http://dx.doi.org/10.1159/000443109] [PMID: 27160713]
[http://dx.doi.org/10.1007/978-981-10-8186-6_28]
[http://dx.doi.org/10.12998/wjcc.v7.i9.1006] [PMID: 31123673]
[http://dx.doi.org/10.1503/cjs.015015] [PMID: 27007094]
[http://dx.doi.org/10.1146/annurev-pharmtox-010716-105001] [PMID: 28061689]
[http://dx.doi.org/10.3389/fnint.2015.00070] [PMID: 26834586]
[http://dx.doi.org/10.1007/s00221-017-5102-5] [PMID: 28993860]
[http://dx.doi.org/10.1111/bpa.12597] [PMID: 29485701]
[http://dx.doi.org/10.3233/JAD-180997] [PMID: 30775997]
[http://dx.doi.org/10.1111/acel.13433] [PMID: 34261192]
[http://dx.doi.org/10.1073/pnas.1010461107] [PMID: 20837517]
[http://dx.doi.org/10.3389/fnins.2019.00871] [PMID: 31496932]
[http://dx.doi.org/10.1016/j.trsl.2016.12.005] [PMID: 28034760]
[PMID: 27103040]
[http://dx.doi.org/10.1016/j.molmet.2018.01.013] [PMID: 29398615]
[http://dx.doi.org/10.1177/0271678X16654492] [PMID: 27301477]
[http://dx.doi.org/10.1016/j.biopsych.2020.02.001] [PMID: 32223911]
[http://dx.doi.org/10.2174/1871527319666200214104331] [PMID: 32056532]
[http://dx.doi.org/10.1002/1873-3468.12590] [PMID: 28185264]
[http://dx.doi.org/10.1038/s41598-020-72355-2] [PMID: 33184307]
[http://dx.doi.org/10.1155/2018/6346954]
[http://dx.doi.org/10.3389/fnagi.2019.00204] [PMID: 31447664]
[http://dx.doi.org/10.3389/fncom.2015.00156] [PMID: 26858635]
[http://dx.doi.org/10.3389/fnana.2019.00057] [PMID: 31244617]
[http://dx.doi.org/10.21203/rs.3.rs-477151/v1]
[http://dx.doi.org/10.1007/s12035-018-1151-4] [PMID: 30008073]
[http://dx.doi.org/10.1097/WAD.0000000000000184] [PMID: 28030437]
[http://dx.doi.org/10.1016/S1474-4422(16)00070-3] [PMID: 27068280]
[http://dx.doi.org/10.1186/s13195-019-0485-0] [PMID: 31010420]
[http://dx.doi.org/10.3389/fnagi.2016.00316] [PMID: 28144219]
[http://dx.doi.org/10.2217/bmm-2017-0041] [PMID: 28976776]
[http://dx.doi.org/10.1016/j.biochi.2015.11.022] [PMID: 26620258]
[http://dx.doi.org/10.1186/s13041-019-0448-1] [PMID: 30922367]
[http://dx.doi.org/10.1016/j.dadm.2018.03.003] [PMID: 30623019]
[http://dx.doi.org/10.3233/JAD-160748] [PMID: 27792013]
[http://dx.doi.org/10.1016/j.psyneuen.2010.12.019] [PMID: 21295411]
[http://dx.doi.org/10.1016/j.autneu.2006.10.006] [PMID: 17157080]
[http://dx.doi.org/10.9754/journal.wmc.2013.004358]
[http://dx.doi.org/10.1016/0278-5846(94)00107-S] [PMID: 7535938]
[http://dx.doi.org/10.1016/j.trac.2019.115781]
[http://dx.doi.org/10.1016/j.trac.2019.02.020]
[http://dx.doi.org/10.1155/2018/6572381] [PMID: 29854777]
[http://dx.doi.org/10.3390/diagnostics11020371] [PMID: 33671562]
[http://dx.doi.org/10.1055/s-0039-1678581] [PMID: 30925615]
[http://dx.doi.org/10.1016/j.trci.2019.05.008] [PMID: 31334330]
[http://dx.doi.org/10.1016/S1474-4422(19)30480-6] [PMID: 31978357]
[http://dx.doi.org/10.1038/nature19323] [PMID: 27582220]
[http://dx.doi.org/10.2174/1568026616666160414123500] [PMID: 27086787]
[PMID: 9239452]
[http://dx.doi.org/10.2165/00003088-199630020-00002] [PMID: 8906894]
[http://dx.doi.org/10.1111/jdi.12420] [PMID: 26816596]
[http://dx.doi.org/10.1002/biof.1703] [PMID: 33347668]
[http://dx.doi.org/10.1016/j.foodchem.2020.128256] [PMID: 33035827]
[http://dx.doi.org/10.3390/foods9070844] [PMID: 32610462]
[http://dx.doi.org/10.1590/s2175-97902018000117151]
[http://dx.doi.org/10.3390/foods9040534] [PMID: 32344540]
[http://dx.doi.org/10.1016/j.jfda.2016.03.003] [PMID: 28911570]
[http://dx.doi.org/10.1016/j.foodchem.2021.130981] [PMID: 34500290]
[http://dx.doi.org/10.1155/2017/3592491] [PMID: 28367491]