Neurodegenerative Diseases

Neurodegenerative Diseases

Neurodegenerative diseases(NDDs) are caused by loss of CNS neurons, following myelin sheath damage and synaptic dysfunction. With the development of NDDs, serious deficiency of neurofunctional disorder appears.

Types of Neurodegenerative Diseases

Acute and chronic NDDs are common diseases.

01

Acute NDDs: mainly include cerebral ischemia(CI), brain injury(BI) and epilepsy;

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Chronic NDDs: include Alzheimer's disease(AD), Parkinson's disease(PD), Huntington's disease(HD), Amyotrophic lateral sclerosis(ALS), Multiple sclerosis(MS), Frontotemporal dementia(FTD) and Neuromyelitis optica spectrum disorders(NMOSD) etc.

Pathogenesis of these diseases is very complex. Currently, pathological protein aggregation and damage to neurovascular unit are common pathologic features of NDDs, finally resulting in the neuronal death.

NDD_features
Fig. 1.  Features of Neurodegenerative Diseases.
NDD marker and position
Fig. 2. NDD marker and position.
Features of Neurodegenerative Diseases

Different NDDs are often accompanied by featured pathological protein aggregation and affected sites: e.g. featured pathological proteins in AD like amyloid β-protein and tau protein deposits in temporal lobe and cerebral cortex. α-synuclein(α-Syn) protein in PD deposits in midbrain substantia nigra. Huntingtin(Htt) proteins deposits in basal ganglia. TDP-43(transactive response DNA binding protein 43 kDa) deposits in temporal cortex and spinal cord. Ubiquitin proteasome system and autophagy-lysosomal are two important pathways responsible for protein degradation in neuron. The damage of the two pathways may be main reasons for pathological protein deposition. Pathological proteins usually exist before clinical symptoms of NDDs. With the development of the disease, these proteins gradually accumulate. Thus, these accumulated pathological proteins are used as specific biomarkers applied in early and differential diagnoses of various NDDs.

NDD-Proteins
Fig.3. Featured accumulated proteins, brain area associated and affected genes.
Hot Targets of Neurodegenerative Diseases

Currently, cranial nerve diseases like neurodegenerative diseases are still facing low consultation rate, high misdiagnosis rate and low cure rate. Thus, early diagnosis is very important for timely intervention therapy. FineTest provides a list of targets of neurodegenerative diseases to help in vitro research of cranial nerve diseases.

Alzheimer′s Disease(AD)

Alzheimer′s Disease(AD) is degeneration of central nervous and also manifested as cognitive dysfunction, behavior impairment and incurability. Combined therapy can relief the disease and delay the development. Currently, various theories try to explain the pathological changes, including β - amyloid protein waterfall cascade, Tau protein theory, Neurovascular hypothesis.

APP/A beta APOE ACHE BCHE BACE-1 GSK-3beta NPTX2 Nogo Receptor
Tau TREM2 VLDL R ADAM17 ADAM9 APH1A BECN1 CASP3
CASP6 CASP8 CASP9 GRIN2C GRM5 GSK3B MTOR NFE2L2
NGF PDE4A PDE5A PLD2 PPARG PPARGC1A PSEN1 PSEN2
PSENEN

Parkinson Disease(PD)

Parkinson Disease(PD) is a common aged degenerative disease of nervous system. Symptoms include slow movement, shaking of hands and feet or other parts of the body. The body loses flexibility and becomes stiff. Pigment cells in the substantia nigra decreases. Dopaminergic neuron is lost. Glial cells increase. Lewy body appears. Inhibitory transmitter in the striatum and excitatory transmitter acetylcholine are relatively imbalanced.

Alpha-Synuclein CNTF R alpha DDC GFR alpha-like LRRK2 MAOA MAOB APOE
CALB1 COMT DRD1 DRD2 DRD5 GLUD2 MFN1 MFN2
PINK1 PPP1R1B RORC SLC18A2 UBB UBE2K UBQLN1

Huntington Disease(HD)

Huntington Disease(HD, also called Huntington's chorea) is a rare autosomal dominant neurodegenerative disorder. Symptoms of patients are unconsciously dancing like movements. Abnormal mental behavior and cognitive function may appear. This is a genetic disease caused by abnormally repeated CAG fragment of HTT gene on Chromosome 4.

HTT PSMC6 FIS1 CCNH SIRT1 SUZ12

Amyotrophic Lateral Sclerosis(ALS)

Amyotrophic lateral sclerosis(ALS) is a fatal neurodegenerative disease, caused by deficiency of brain and spinal motor neurons. This disease results in gradual powerlessness and myatrophy of hands, feet, body, chest and abdomen, affecting movement, communication, swallowing and respiratory function till death. SOD1 is found to be closely related to familial amyotrophic lateral sclerosis and the important disease gene.

SOD1 SOD2 TDP-43 FUS NGFR C9orf72 TARDBP UCP1
AOX1 CHMP2B CSF3R IGF1R SLC1A2 SLC1A3 UBE2K VAPB
VEGFA

Multiple Sclerosis(MS)

Multiple Sclerosis(MS) is a immune-mediated disease featured with pathological inflammatory demyelination of the central nervous system. Various research data show B cell and its autoantibody play an important role in the development of multiple sclerosis. Several B cell specifically expressed CD20 antibody drugs for treating multiple sclerosis have been developed.

CIITA GATA3 IFNGR1 IL10RA IL17RA IL17RB IL1RAP IL22RA1
IL24 IL2RB IL4R IL6 IL6R IL7 MAG MPO
MPP5 NF2 RARA RORC RTN4 SPHK1 TBX21 TGFB1
TPO TSLP

Diabetic Neuropathy(DN)

Diabetic neuropathy(DN) is a degenerative neurological disorder and the most common diabetic chronic complication. Without any other secondary peripheral neuropathy, this disease will affect the body or autonomic peripheral nervous system of diabetic patients. About 50% diabetic patients finally develops into diabetic neuropathy.

AKT1 AKT2 AKT3 BDNF GLP1R GNAS GRM5 HSPB1
HSPBP1 MAPK11 MAPK12 MAPK13 NGF NRG1 NRG3 NTF3
NTRK2 PIK3C2B PIK3CB PIK3CD PIK3R1 PIK3R2 PIK3R4 PIK3R5
RAB7A SOD2 SOD3 TNFRSF1A TNFRSF1B VEGFA