OBJECTIVE: The present study investigated the effects of plasma matrix metalloproteinases (MMPs) on longitudinal changes in Alzheimer's disease (AD)-related biomarkers in cerebrospinal fluid (CSF), brain atrophy, and cognitive function in patients with mild cognitive impairment due to AD (MCI-AD). METHODS: We used data from the Alzheimer's Disease Neuroimaging Initiative database. We included 95 ApoE4-positive patients with MCI-AD who were confirmed to have low Aβ42 and/or high phosphorylated-tau (p-tau) in CSF. We obtained baseline demographic data, plasma MMP levels, including MMP-1, -2, -7, -9, -10, and tissue inhibitor of MMP-1 (TIMP-1), longitudinal annual data on Aβ42, total tau, and p-tau in CSF, MRI-measured hippocampal volumes, and cognitive function evaluated by the Mini-Mental State Examination (MMSE) and AD Assessment Scale-11 (ADAS-11) over 4 years. We examined the effects of baseline MMP levels on longitudinal changes in CSF AD biomarkers, hippocampal volumes, and cognitive function using a linear mixed regression analysis. RESULTS: No significant differences were observed in baseline plasma MMP levels between MCI-AD patients and control subjects, except for MMP-10, which was significantly lower in MCI-AD than in controls. The baseline levels of MMPs did not correlate with longitudinal changes in CSF biomarkers. Declines in hippocampal volumes and cognitive function evaluated by MMSE and ADAS-11 were significantly faster in MCI-AD patients with high-MMP-9 levels at baseline than in those with middle and low MMP-9 levels at baseline. CONCLUSION: High plasma MMP-9 levels in MCI-AD patients might enhance neurodegeneration and cognitive decline.
OBJECTIVE: The present study investigated the effects of plasma matrix metalloproteinases (MMPs) on longitudinal changes in Alzheimer's disease (AD)-related biomarkers in cerebrospinal fluid (CSF), brain atrophy, and cognitive function in patients with mild cognitive impairment due to AD (MCI-AD). METHODS: We used data from the Alzheimer's Disease Neuroimaging Initiative database. We included 95 ApoE4-positive patients with MCI-AD who were confirmed to have low Aβ42 and/or high phosphorylated-tau (p-tau) in CSF. We obtained baseline demographic data, plasma MMP levels, including MMP-1, -2, -7, -9, -10, and tissue inhibitor of MMP-1 (TIMP-1), longitudinal annual data on Aβ42, total tau, and p-tau in CSF, MRI-measured hippocampal volumes, and cognitive function evaluated by the Mini-Mental State Examination (MMSE) and AD Assessment Scale-11 (ADAS-11) over 4 years. We examined the effects of baseline MMP levels on longitudinal changes in CSF AD biomarkers, hippocampal volumes, and cognitive function using a linear mixed regression analysis. RESULTS: No significant differences were observed in baseline plasma MMP levels between MCI-AD patients and control subjects, except for MMP-10, which was significantly lower in MCI-AD than in controls. The baseline levels of MMPs did not correlate with longitudinal changes in CSF biomarkers. Declines in hippocampal volumes and cognitive function evaluated by MMSE and ADAS-11 were significantly faster in MCI-AD patients with high-MMP-9 levels at baseline than in those with middle and low MMP-9 levels at baseline. CONCLUSION: High plasma MMP-9 levels in MCI-AD patients might enhance neurodegeneration and cognitive decline.
Authors: Mitzi M Gonzales; Sudarshan Krishnamurthy; Valentina Garbarino; Ali S Daeihagh; Gregory J Gillispie; Gagan Deep; Suzanne Craft; Miranda E Orr Journal: Mech Ageing Dev Date: 2021-10-21 Impact factor: 5.498
Authors: Miri Kim; Erik Ladomersky; Andreas Mozny; Masha Kocherginsky; Kaitlyn O'Shea; Zachary Z Reinstein; Lijie Zhai; April Bell; Kristen L Lauing; Lakshmi Bollu; Erik Rabin; Karan Dixit; Priya Kumthekar; Leonidas C Platanias; Lifang Hou; Yinan Zheng; Jennifer Wu; Bin Zhang; Maya Hrachova; Sarah A Merrill; Maciej M Mrugala; Vikram C Prabhu; Craig Horbinski; Charles David James; Bakhtiar Yamini; Quinn T Ostrom; Margaret O Johnson; David A Reardon; Rimas V Lukas; Derek A Wainwright Journal: Neurooncol Adv Date: 2021-09-04
Authors: Chuan Ze Liu; Da Shuai Guo; Jian Jun Ma; Lin Rui Dong; Qing Qing Chang; Hong Qi Yang; Ke Ke Liang; Xiao Huan Li; Da Wei Yang; Yong Yan Fan; Qi Gu; Si Yuan Chen; Dong Sheng Li Journal: Front Aging Neurosci Date: 2022-08-22 Impact factor: 5.702