Neurodegeneration of the brain after ischemia is a major cause of severe, long-term disability, dementia, and mortality, which is a global problem. These phenomena are attributed to excitotoxicity, changes in the blood–brain barrier, neuroinflammation, oxidative stress, vasoconstriction, cerebral amyloid angiopathy, amyloid plaques, neurofibrillary tangles, and ultimately neuronal death. In addition, genetic factors such as post-ischemic changes in genetic programming in the expression of amyloid protein precursor, β-secretase, presenilin-1 and -2, and tau protein play an important role in the irreversible progression of post-ischemic neurodegeneration. Numerous studies have shown that the high contents of flavonoids and phenolic acids in honey have antioxidant, anti-inflammatory, anti-apoptotic, anti-amyloid, anti-tau protein, anticholinesterase, serotonergic, and AMPAK activities, influencing signal transmission and neuroprotective effects.
Substance | Model | Treatment | Effects | References |
---|---|---|---|---|
Honey | ||||
Malaysian Tualang honey | p2VO | Pre: 1.2 g/kg for 10 days with Post: 10 weeks | ↓ Hippocampal CA1 region damage ↑ Spatial learning, memory performance | [48][50] |
Flavonoids | ||||
Quercetin | tMCAO | Post: 20 mg/kg/d for 3 days | ↓ Oxidative stress, necrosis, apoptosis, brain edema, brain injury, neurological deficits |
[54] |
Quercetin | pMCAO | Post: 30 mg/kg single dose | ↓ Brain injury | [51] |
Quercetin | Photothrombotic model | Post: 25 µmol/kg every 12 h for 3 days | ↓ BBB injury, brain edema, neurological deficits ↑ Functional outcomes |
[53] |
Quercetin | 2VO | Pre: 50 mg/kg 30 min before and immediately post-ischemia, then daily for 2 days |
↓ BBB injury, delayed neuronal damage in CA1, CA2, brain injury | [52] |
Quercetin | tMCAO | Pre: 10 mg/kg 30 min before | ↓ Neurological deficits, behavioral changes ↑ Parvalbumin expression |
[58] |
Quercetin | tMCAO | Pre: 10 mg/kg 1 h before | ↓ Brain edema, damage in brain cortex, neurological deficits ↑ Thioredoxin, interaction of apoptosis signal-regulating kinase 1 and thioredoxin |
[56] |
Quercetin | tMCAO | Pre: 10 mg/kg 30 min before | ↓ Infarct volume, neurological deficit ↑ Protein phosphatase 2A |
[55] |
Quercetin | tMCAO | Post: 10, 30, 50 mg/kg at the onset of reperfusion | ↓ BBB injury, ROS, infarct volume, neurological deficit | [59] |
Quercetin | pMCAO | Pre: 10 mg/kg 1 h before | ↓ Intracellular calcium overload, glutamate excitotoxicity, caspase-3. | [57] |
Myricetin | tMCAO | Pre: 20 mg/kg 2 h before and daily for 2 days after ischemia Pre: 25 mg/kg daily for 7 days |
↓ Oxidative stress, apoptosis, neuronal loss, inflammation, infarct volume, ROS, neurological deficits ↑ Antioxidant enzymes, mitochondrial function, Nrf2 nuclear translocation, HO-1 expression |
[60] |
Myricetin | pMCAO | Pre: 1 mg/kg, 5 mg/kg, 25 mg/kg for 7 days | ↓ IL-1β, IL-6, TNF-α, MDA, p38 MAPK, NF-κB/p65, apoptosis, infarct area, neurological deficit ↑ GSH/GSSG ratio, SOD, phosphorylated AKT |
[63] |
Myricetin | tMCAO | Pre: 25 mg/kg for 7 days | ↓ Excitotoxicity, oxidative stress, inflammation, apoptosis | [62] |
Kaempferol | tMCAO | Pre: 10,15 μmol/l 30 min before and immediately after ischemia Post: 7.5, 10 mg/kg single dose Post: 25, 50, 100 mg/kg daily for 7 days |
↓ Metalloproteinase, anti-laminin staining, nitrosative-oxidative stress, caspase-9, apoptosis, poly-(ADP-ribose) polymerase, amyloid protein precursor, glial fibrillary acidic protein, phosphorylated STAT3, NF-κB p65, nuclear content of NF-κB p65, tumor necrosis factor α, interleukin 1β, intercellular adhesion molecule 1, matrix metallopeptidase 9, inducible nitric oxide synthase, myeloperoxidase, neuroinflammation, BBB injury, microglia activity, brain injury, neurological deficits | [64][65][71] |
Naringenin | pMACO | Pre: 100 mg/kg daily for 4 days | ↓ Neuroinflammation, edema, NOD2, RIP2, NF-κB, MMP-9, BBB injury, infarct volume, neurological deficits ↑ Claudin-5 |
[68] |
Naringenin | tMCAO | Pre: 50 mg/kg daily for 21 days Post: 80 µM single dose |
↓ Apoptosis, oxidative stress, edema, NF-κB, myeloperoxidase, nitric oxide, cytokines, neuroinflammation, glial activation, injury volume, neurological deficits ↑ Cortical neurons proliferation |
[67][70] |
Luteolin | tMCAO | Post: 20, 40, 80 mg/kg 0 and 12 h after ischemia | ↓ Injury volume, edema, IL-1β, TNF-α, iNOS, COX-2, NF-κB, inflammation, neurological deficits ↑ Nrf2, PPARγ. |
[71] |
Luteolin | tMCAO | Post: 5, 10, 25 mg/kg single dose | ↓ Oxidative stress, apoptosis, mRNA and protein of MMP9, infarct volume, neurological deficits ↑ PI3K/Akt |
[72] |
Luteolin | pMCAO | Post: 10, 25 mg/kg single dose post-ischemia | ↓ MDA, Bax, oxidative stress, apoptosis, edema, infarct volume, neurological deficits ↑ SOD1, CAT, Bcl-2, claudin-5 |
[73] |
Luteolin | pMCAO | Post: 5, 10 mg/kg 0 h and daily for 3 days survival | ↓ Brain edema, TLR4, TLR5, p-p38, NF-κB infarct size, neurological deficit ↑Phospho-ERK |
[74] |
Phenolic acids | ||||
Caffeic acid | tMCAO | Pre: 10, 50 mg/kg 30 min before, 0, 1, 2 h, and every 12 h for 4 days after ischemia Pre: 0.1, 1, 10 µg/kg 15 min before, single dose |
↓ Neuroinflammation, leukotrienes, neuron loss, 5-lipoxygenase, astrocyte proliferation, infarct volume, brain atrophy, neurological dysfunction ↑ NO |
[75][76] |
Caffeic acid | pMCAO | Post: 10 µmol/kg daily for 7 days | ↓ MDA, CAT, XO, oxidative stress, lipid peroxidation, infarct size, neurological deficits ↑ GSH, NO |
[77] |
Caffeic acid | Global ischemia | Post: 10, 30, 50 mg/kg single dose | ↓ Hippocampus injury, NF-κBp65, MDA, 5-LO, oxidative stress, memory deficits ↑ SOD |
[79] |
Caffeic acid | tMCAO | Post: 3, 10, 30 mg/kg 0, 2 h after ischemia | ↓ MMP-2, MMP-9, edema, damage in penumbra, infarct volume, sensory-motor deficits, behavioral deficits | [78] |
Ferulic acid |
Global ischemia | Post: 28, 56, 112 mg/kg daily for 5 days | ↓ Oxidative stress, mRNA caspase 3, mRNA Bax, hippocampus apoptosis, memory impairment ↑ mRNA Bcl-2, SOD |
[85] |
Ferulic acid |
tMCAO | Post: 50, 100, 200 mg/kg daily for 7 days | ↓ Hippocampus injury, neurological deficits ↑ In hippocampus, EPO and granulocyte colony-stimulating factor |
[83] |
Ferulic acid |
tMCAO | Post: 100 mg/kg 0 h post-ischemia Post: 100 mg/kg 2 h post-ischemia Post: 100 mg/kg 24 h Pre: 100 mg/kg 24 h before ischemia Pre: 100 mg/kg 2 h before ischemia |
Pretreatment 2 h before ischemia and posttreatment 2 h after ischemia ↓ Bax, astrocytosis, infarction volume | [84] |
Ferulic acid |
tMCAO | Pre: 80, 100 mg/kg Post: 100 mg/kg 30 min after ischemia |
↓ Superoxide radicals, ICAM-1, NF-κB, infarct size, neurological deficits | [80] |
Ferulic acid |
tMCAO | Post; 100 mg/kg 0 h after ischemia | ↓ ICAM-1 mRNA, Mac-1 mRNA, Mac-1, 4-HNE, 8-OHdG positive cells, TUNEL positive cells, caspase 3, microglia activity, apoptosis, macrophages, oxidative stress, inflammation | [81] |
Ferulic acid |
tMCAO | Post: 100 mg/kg 0 h, or 30 min or 2 h after ischemia | ↓ PSD-95, nNOS, iNOS, nitrotyrosine, caspase-3, apoptosis, Bax, cytochrome c, MAP kinase ↑ Gamma-aminobutyric acid type B receptor, therapeutic window |
[82] |
P-coumaric acid |
pMCAO | Post: 100 mg/kg single dose | ↓ Oxidative damage, MDA, apoptosis, caspase-3, caspase-9, edema, infarct volume, neurological deficits ↑ SOD, NRF-1 |
[86] |
P-coumaric acid |
Global ischemia | Pre: 100 mg/kg for 2 weeks before ischemia | ↓ MDA, oxidative stress, hippocampal neuronal death, infarct volume, brain damage ↑ Catalase, superoxide dismutase |
[87] |
Chlorogenic acid |
tMCAO | Post: 3, 10, 30 mg/kg 0, 2 h after ischemia Pre: 15, 30, 60 mg/kg for 1 week |
↓ BBB, oxidative stress, MMP-2, MMP-9, edema, infarct volume, sensory-motor deficits, behavioral deficits | [88][89] |
Chlorogenic acid |
tMCAO | Post: 30 mg/kg 2 h after ischemia | ↓ Cytochrome c, caspase-3, cleaved caspase-3, neurological deficits ↑ Phospho-PDK1, phospho-Akt, phospho-Bad |
[92] |
Chlorogenic acid |
tMCAO | Pre: 15, 30, 60 mg/kg once a day for 1 week | ↓ Mortality, infarction area, injury of hippocampus, cortex lesions, neurological deficit ↑ EPO, HIF-1α, NGF |
[89] |
Chlorogenic acid |
Repeated global ischemia | Post: 20, 100, 500 mg/kg single dose | ↓ Oxidative stress, apoptosis, MMPs, infarct volume, memory deficits ↑ SOD, GSH |
[90] |
Chlorogenic acid |
Embolic strokes with rtPA | Post: 50 mg/kg 5 min, 1, 3 h after ischemia | ↓ Behavioral deficits ↑ Therapeutic window |
[95] |
Chlorogenic acid |
tMCAO | Post: 30 mg/kg 2 h after ischemia | ↓ TUNEL-positive cells, caspase-3 and -7, oxidative stress, edema, infarct size, neurological damage | [91] |
Chlorogenic acid |
tMCAO | Post: 30 mg/kg 2 h post-ischemia | ↓ Reactive oxygen species, oxidative stress, NF-κB, IL-1β, TNF-α, microglia, astrocyte activation, inflammation, cortex pathology | [94] |
Chlorogenic acid |
tMCAO | Post: 30 mg/kg/d 3 days after ischemia | ↓ Cerebral cortex apoptosis, infarct volume ↑ Angiogenesis, VEGFA, PI3K/Akt signaling |
[92] |
Gallic acid | tMCAO | Pre: 50 mg/kg daily for 7 days Pre: 50 mg/kg single dose |
↓ Oxidative stress, apoptosis, neuroinflammation, mitochondrial dysfunction, injury size, neurological deficits |
[97][99] |
Gallic acid | Global ischemia | Pre: 100 mg/kg/d for 10 days | ↓ BBB injury, MDA, oxidative stress, hippocampus EEG changes, anxiety, behavioral deficits |
[100] |
Gallic acid | Global ischemia | Post: 25, 50 mg/kg/d for 1 week | ↓ Oxidative stress, depressive symptoms | [98] |
Ellagic acid |
Photothrombotic model | Pre: 10, 30 mg/kg 24 h before and 0 h post-ischemia | ↓ Apoptotic cells, infarct size, neurological deficits | [96] |
This entry is adapted from the peer-reviewed paper 10.3390/molecules28155624