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Zhao J, Jiao Y, Wang H, Song P, Gao Z, Bing X, Zhang C, Ouyang A, Yao J, Wang S, Jiang H. Radiomic features of the hippocampal based on magnetic resonance imaging in the menopausal mouse model linked to neuronal damage and cognitive deficits. Brain Imaging Behav 2024; 18:368-377. [PMID: 38102441 PMCID: PMC11156756 DOI: 10.1007/s11682-023-00808-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2023] [Indexed: 12/17/2023]
Abstract
Estrogen deficiency in the early postmenopausal phase is associated with an increased long-term risk of cognitive decline or dementia. Non-invasive characterization of the pathological features of the pathological hallmarks in the brain associated with postmenopausal women (PMW) could enhance patient management and the development of therapeutic strategies. Radiomics is a means to quantify the radiographic phenotype of a diseased tissue via the high-throughput extraction and mining of quantitative features from images acquired from modalities such as CT and magnetic resonance imaging (MRI). This study set out to explore the correlation between radiomics features based on MRI and pathological features of the hippocampus and cognitive function in the PMW mouse model. Ovariectomized (OVX) mice were used as PWM models. MRI scans were performed two months after surgery. The brain's hippocampal region was manually annotated, and the radiomic features were extracted with PyRadiomics. Chemiluminescence was used to evaluate the peripheral blood estrogen level of mice, and the Morris water maze test was used to evaluate the cognitive ability of mice. Nissl staining and immunofluorescence were used to quantify neuronal damage and COX1 expression in brain sections of mice. The OVX mice exhibited marked cognitive decline, brain neuronal damage, and increased expression of mitochondrial complex IV subunit COX1, which are pathological phenomena commonly observed in the brains of AD patients, and these phenotypes were significantly correlated with radiomics features (p < 0.05, |r|>0.5), including Original_firstorder_Interquartile Range, Original_glcm_Difference Average, Original_glcm_Difference Average and Wavelet-LHH_glszm_Small Area Emphasis. Meanwhile, the above radiomics features were significantly different between the sham-operated and OVX groups (p < 0.01) and were associated with decreased serum estrogen levels (p < 0.05, |r|>0.5). This initial study indicates that the above radiomics features may have a role in the assessment of the pathology of brain damage caused by estrogen deficiency using routinely acquired structural MR images.
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Affiliation(s)
- Jie Zhao
- Department of Radiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yan Jiao
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Hui Wang
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Peiji Song
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhen Gao
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xue Bing
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Chunling Zhang
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Aimei Ouyang
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jian Yao
- Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Song Wang
- Department of Radiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, No.725, South Wanping Road, Shanghai, 200032, China.
| | - Huijie Jiang
- Department of Radiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.
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Targeting the TLR4/NF-κΒ Axis and NLRP1/3 Inflammasomes by Rosuvastatin: A Role in Impeding Ovariectomy-Induced Cognitive Decline Neuropathology in Rats. Mol Neurobiol 2022; 59:4562-4577. [PMID: 35578102 DOI: 10.1007/s12035-022-02852-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/25/2022] [Indexed: 01/29/2023]
Abstract
Postmenopausal hormone-related cognitive decline has gained an immense interest to explore the underlying mechanisms and potential therapies. The current work aimed to study the possible beneficial effect of rosuvastatin (ROS) on the cognitive decline induced by ovariectomy in rats. Four groups were used as follows: control group, control + rosuvastatin, ovariectomy, and ovariectomy + rosuvastatin. After sham operation or ovariectomy, rats were given saline or oral dosages of ROS (2 mg/kg) every day for 30 days. The cognitive functions were assessed using the Morris water maze paradigm, Y-maze test, and new object recognition test. After rat killing, TLR4, caspase-8, and NLRP mRNA expression and protein levels of ASC, AIM2, caspase-1, NLRP1, and PKR were measured in hippocampus. This was complemented by the estimation of tissue content of NF-κΒ, IL-1β, and IL-18 and serum lipid profile quantification. Rosuvastatin showed a promising potential for halting the cognitive impairments induced by estrogen decline through interfering with the TLR4/NF-κΒ/NLRP1/3 axis and inflammasomes activation and the subsequent pyroptosis. This was complemented by the amendment in the deranged lipid profile. Rosuvastatin may exert a beneficial role in attenuating the inflammatory and apoptotic signaling mechanisms associated with postmenopausal cognitive decline. Further investigations are needed to unveil the relationship between deranged plasma lipids and cognitive function.
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Yang Y, Zhao L, Li N, Dai C, Yin N, Chu Z, Duan X, Niu X, Yan P, Lv P. Estrogen Exerts Neuroprotective Effects in Vascular Dementia Rats by Suppressing Autophagy and Activating the Wnt/β-Catenin Signaling Pathway. Neurochem Res 2020; 45:2100-2112. [PMID: 32719979 DOI: 10.1007/s11064-020-03072-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/23/2020] [Accepted: 06/12/2020] [Indexed: 01/24/2023]
Abstract
Vascular dementia (VD) is a clinical syndrome of acquired cognitive dysfunction caused by various cerebrovascular factors. Estrogen is a steroid hormone involved in promoting neuronal survival and in regulating many signaling pathways. However, the mechanism by which it confers neuroprotective effects in VD remains unclear. Here, we aimed to investigate the effect of estrogen on neuronal injury and cognitive impairment in VD rats. Adult female rats were randomly divided into four groups (sham, model, estrogen early and estrogen later treatment) and received sham surgery or bilateral ovariectomy and permanent occlusion of bilateral common carotid arteries (BCCAO). The early treatment group received daily intraperitoneal injections of 17β-estradiol (100 µg/kg/day) for 8 weeks starting the day after BCCAO. The later treatment group was administered the same starting 1 week after BCCAO. Learning and memory functions were assessed using the Morris water maze. Morphological changes within the hippocampal CA1 region were observed by hematoxylin/eosin staining and electron microscopy. Expression of proteins associated with autophagy and signaling were detected by immunohistochemical staining and Western blot. We found that estrogen significantly alleviated cognitive damage and neuronal injury and reduced the expression of Beclin1 and LC3B, indicating a suppression of autophagy. Moreover, estrogen enhanced expression of β-catenin and Cyclin D1, while reducing glycogen synthase kinase 3β, suggesting activation of Wnt/β-catenin signaling. These results indicate that estrogen ameliorates learning and memory deficiencies in VD rats, and that this neuroprotective effect may be explained by the suppression of autophagy and activation of Wnt/β-catenin signaling.
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Affiliation(s)
- Yanyan Yang
- Department of Neurology, Hebei Medical University, Shijiazhuang, 050017, China.,Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Lei Zhao
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Na Li
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Congwei Dai
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Nan Yin
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Zhaoping Chu
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Xiaoyan Duan
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Xiaoli Niu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Ping Yan
- Department of Gynecology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Peiyuan Lv
- Department of Neurology, Hebei General Hospital, Shijiazhuang, 050051, China.
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Regan P, McClean PL, Smyth T, Doherty M. Early Stage Glycosylation Biomarkers in Alzheimer's Disease. MEDICINES 2019; 6:medicines6030092. [PMID: 31484367 PMCID: PMC6789538 DOI: 10.3390/medicines6030092] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is of great cause for concern in our ageing population, which currently lacks diagnostic tools to permit accurate and timely diagnosis for affected individuals. The development of such tools could enable therapeutic interventions earlier in the disease course and thus potentially reducing the debilitating effects of AD. Glycosylation is a common, and important, post translational modification of proteins implicated in a host of disease states resulting in a complex array of glycans being incorporated into biomolecules. Recent investigations of glycan profiles, in a wide range of conditions, has been made possible due to technological advances in the field enabling accurate glycoanalyses. Amyloid beta (Aβ) peptides, tau protein, and other important proteins involved in AD pathogenesis, have altered glycosylation profiles. Crucially, these abnormalities present early in the disease state, are present in the peripheral blood, and help to distinguish AD from other dementias. This review describes the aberrant glycome in AD, focusing on proteins implicated in development and progression, and elucidates the potential of glycome aberrations as early stage biomarkers of AD.
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Affiliation(s)
- Patricia Regan
- Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland.
- Cellular Health and Toxicology Research Group, Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland.
| | - Paula L McClean
- Northern Ireland Centre for Stratified Medicine, Biomedical Sciences Research Institute, Clinical Translational Research and Innovation Centre, Altnagelvin Area Hospital, Glenshane Road, Derry BT47 6SB, UK
| | - Thomas Smyth
- Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland
- Cellular Health and Toxicology Research Group, Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland
| | - Margaret Doherty
- Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland
- Cellular Health and Toxicology Research Group, Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland
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