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Kumari S, Rana B, Senthil Kumaran S, Chaudhary S, Jain S, Srivastava AK, Rajan R. Gray Matter Atrophy in a 6-OHDA-induced Model of Parkinson's Disease. Neuroscience 2024; 551:217-228. [PMID: 38843989 DOI: 10.1016/j.neuroscience.2024.05.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/16/2024] [Accepted: 05/23/2024] [Indexed: 06/15/2024]
Abstract
INTRODUCTION Magnetic resonance imaging (MRI) based brain morphometric changes in unilateral 6-hydroxydopamine (6-OHDA) induced Parkinson's disease (PD) model can be elucidated using voxel-based morphometry (VBM), study of alterations in gray matter volume and Machine Learning (ML) based analyses. METHODS We investigated gray matter atrophy in 6-OHDA induced PD model as compared to sham control using statistical and ML based analysis. VBM and atlas-based volumetric analysis was carried out at regional level. Support vector machine (SVM)-based algorithms wherein features (volume) extracted from (a) each of the 150 brain regions (b) statistically significant features (only) and (c) volumes of each cluster identified after application of VBM (VBM_Vol) were used for training the decision model. The lesion of the 6-OHDA model was validated by estimating the net contralateral rotational behaviour by the injection of apomorphine drug and motor impairment was assessed by rotarod and open field test. RESULTS AND DISCUSSION In PD, gray matter volume (GMV) atrophy was noted in bilateral cortical and subcortical brain regions, especially in the internal capsule, substantia nigra, midbrain, primary motor cortex and basal ganglia-thalamocortical circuits in comparison with sham control. Behavioural results revealed an impairment in motor performance. SVM analysis showed 100% classification accuracy, sensitivity and specificity at both 3 and 7 weeks using VBM_Vol. CONCLUSION Unilateral 6-OHDA induced GMV changes in both hemispheres at 7th week may be associated with progression of the disease in the PD model. SVM based approaches provide an increased classification accuracy to elucidate GMV atrophy.
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Affiliation(s)
- Sadhana Kumari
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Bharti Rana
- Department of Computer Science, University of Delhi, Delhi 110007, India
| | - S Senthil Kumaran
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
| | - Shefali Chaudhary
- Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT 06510, USA.
| | - Suman Jain
- Department of Physiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Achal Kumar Srivastava
- Department of Neurology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Roopa Rajan
- Department of Neurology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
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Kang T, Yang Z, Zhou M, Lan Y, Hong Y, Gong X, Wu Y, Li M, Chen X, Zhang W. The role of the Piezo1 channel in osteoblasts under cyclic stretching: A study on osteogenic and osteoclast factors. Arch Oral Biol 2024; 163:105963. [PMID: 38608563 DOI: 10.1016/j.archoralbio.2024.105963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/10/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
OBJECTIVES Orthodontic tooth movement is a mechanobiological reaction induced by appropriate forces, including bone remodeling. The mechanosensitive Piezo channels have been shown to contribute to bone remodeling. However, information about the pathways through which Piezo channels affects osteoblasts remains limited. Thus, we aimed to investigate the influence of Piezo1 on the osteogenic and osteoclast factors in osteoblasts under mechanical load. MATERIALS AND METHODS Cyclic stretch (CS) experiments on MC3T3-E1 were conducted using a BioDynamic mechanical stretching device. The Piezo1 channel blocker GsMTx4 and the Piezo1 channel agonist Yoda1 were used 12 h before the application of CS. MC3T3-E1 cells were then subjected to 15% CS, and the expression of Piezo1, Piezo2, BMP-2, OCN, Runx2, RANKL, p-p65/p65, and ALP was measured using quantitative real-time polymerase chain reaction, western blot, alkaline phosphatase staining, and immunofluorescence staining. RESULTS CS of 15% induced the highest expression of Piezo channel and osteoblast factors. Yoda1 significantly increased the CS-upregulated expression of Piezo1 and ALP activity but not Piezo2 and RANKL. GsMTx4 downregulated the CS-upregulated expression of Piezo1, Piezo2, Runx2, OCN, p-65/65, and ALP activity but could not completely reduce CS-upregulated BMP-2. CONCLUSIONS The appropriate force is more suitable for promoting osteogenic differentiation in MC3T3-E1. The Piezo1 channel participates in osteogenic differentiation of osteoblasts through its influence on the expression of osteogenic factors like BMP-2, Runx2, and OCN and is involved in regulating osteoclasts by influencing phosphorylated p65. These results provide a foundation for further exploration of osteoblast function in orthodontic tooth movement.
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Affiliation(s)
- Ting Kang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Ziyuan Yang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Mengqi Zhou
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Yanhua Lan
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Yaya Hong
- Center for Plastic & Reconstructive Surgery, Department of Stomatology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Xinyi Gong
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Yongjia Wu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Min Li
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xuepeng Chen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China.
| | - Weifang Zhang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China.
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Zammit AR, Bennett DA, Buchman AS. From theory to practice: translating the concept of cognitive resilience to novel therapeutic targets that maintain cognition in aging adults. Front Aging Neurosci 2024; 15:1303912. [PMID: 38283067 PMCID: PMC10811007 DOI: 10.3389/fnagi.2023.1303912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/06/2023] [Indexed: 01/30/2024] Open
Abstract
While the concept of cognitive resilience is well-established it has not been defined in a way that can be measured. This has been an impediment to studying its underlying biology and to developing instruments for its clinical assessment. This perspective highlights recent work that has quantified the expression of cortical proteins associated with cognitive resilience, thus facilitating studies of its complex underlying biology and the full range of its clinical effects in aging adults. These initial studies provide empirical support for the conceptualization of resilience as a continuum. Like other conventional risk factors, some individuals manifest higher-than-average cognitive resilience and other individuals manifest lower-than-average cognitive resilience. These novel approaches for advancing studies of cognitive resilience can be generalized to other aging phenotypes and can set the stage for the development of clinical tools that might have the potential to measure other mechanisms of resilience in aging adults. These advances also have the potential to catalyze a complementary therapeutic approach that focuses on augmenting resilience via lifestyle changes or therapies targeting its underlying molecular mechanisms to maintain cognition and brain health even in the presence of untreatable stressors like brain pathologies that accumulate in aging adults.
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Affiliation(s)
- Andrea R. Zammit
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL, United States
- Department of Psychiatry and Behavioral Sciences, Rush University Medical Center, Chicago, IL, United States
| | - David A. Bennett
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL, United States
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, United States
| | - Aron S. Buchman
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL, United States
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, United States
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Zammit AR, Klein HU, Yu L, Levey AI, Seyfried NT, Wingo AP, Wingo TS, Schneider JA, Bennett DA, Buchman AS. Proteome-wide Analyses Identified Cortical Proteins Associated With Resilience for Varied Cognitive Abilities. Neurology 2024; 102:e207816. [PMID: 38165375 PMCID: PMC10834136 DOI: 10.1212/wnl.0000000000207816] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 09/26/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Prior work suggests that cognitive resilience may contribute to the heterogeneity of cognitive decline. This study examined whether distinct cortical proteins provide resilience for different cognitive abilities. METHODS Participants were from the Religious Orders Study or the Rush Memory and Aging Project who had undergone annual assessments of 5 cognitive abilities and postmortem assessment of 9 Alzheimer disease and related dementia (ADRD) pathologies. Proteome-wide examination of the dorsolateral prefrontal cortex using tandem mass tag and liquid chromatography-mass spectrometry yielded 8,425 high-abundance proteins. We applied linear mixed-effect models to quantify residual cognitive change (cognitive resilience) of 5 cognitive abilities by regressing out cognitive decline related to age, sex, education, and indices of ADRD pathologies. Then we added terms for each of the individual proteins to identify cognitive resilience proteins associated with the different cognitive abilities. RESULTS We included 604 decedents (69% female; mean age at death = 89 years) with proteomic data. A total of 47 cortical proteins that provide cognitive resilience were identified: 22 were associated with specific cognitive abilities, and 25 were common to at least 2 cognitive abilities. NRN1 was the only protein that was associated with more than 2 cognitive abilities (semantic memory: estimate = 0.020, SE = 0.004, p = 2.2 × 10-6; episodic memory: estimate = 0.029, SE = 0.004, p = 5.8 × 10-1; and working memory: estimate = 0.021, SE = 0.004, p = 1.2 × 10-7). Exploratory gene ontology analysis suggested that among top molecular pathways, mitochondrial translation was a molecular mechanism providing resilience in episodic memory, while nuclear-transcribed messenger RNA catabolic processes provided resilience in working memory. DISCUSSION This study identified cortical proteins associated with various cognitive abilities. Differential associations across abilities may reflect distinct underlying biological pathways. These data provide potential high-value targets for further mechanistic and drug discovery studies to develop targeted treatments to prevent loss of cognition.
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Affiliation(s)
- Andrea R Zammit
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Hans-Ulrich Klein
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Lei Yu
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Allan I Levey
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Nicholas T Seyfried
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Aliza P Wingo
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Thomas S Wingo
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Julie A Schneider
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - David A Bennett
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
| | - Aron S Buchman
- From the Rush Alzheimer's Disease Center (A.R.Z., L.Y., J.A.S., D.A.B., A.S.B.), and Departments of Psychiatry and Behavioral Sciences (A.R.Z.), Neurological Sciences (L.Y., J.A.S., D.A.B., A.S.B.), and Pathology (J.A.S.), Rush University Medical Center, Chicago, IL; Department of Neurology (H.-U.K.), Columbia University Medical Center, New York, NY; Departments of Neurology (A.I.L., N.T.S., T.S.W.) Psychiatry (A.P.W.), and Human Genetics (T.S.W.), and the Goizueta Alzheimer's Disease Center (T.S.W.), Emory University School of Medicine, Atlanta, GA; Department of Biochemistry (N.T.S.), Emory University, Atlanta, GA; and Division of Mental Health (A.P.W.), Atlanta VA Medical Center, Decatur, GA
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Eastin EF, Tiwari A, Quach TC, Bonilla HF, Miglis MG, Yang PC, Geng LN. New Alcohol Sensitivity in Patients With Post-acute Sequelae of SARS-CoV-2 (PASC): A Case Series. Cureus 2023; 15:e51286. [PMID: 38288178 PMCID: PMC10823305 DOI: 10.7759/cureus.51286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2023] [Indexed: 01/31/2024] Open
Abstract
Post-acute sequelae of SARS-CoV-2 (PASC), or long COVID, is characterized by persistent symptoms after acute SARS-CoV-2 infection that can vary from patient to patient. Here, we present a case series of four patients with a history of SARS-CoV-2 infection referred to the Post-Acute COVID-19 Syndrome (PACS) Clinic at Stanford University for evaluation of persistent symptoms, who also experienced new-onset alcohol sensitivity. Alcohol reactions and sensitivity are not well characterized in the literature as it relates to post-viral illness. While there have been some anecdotal reports of new alcohol sensitivity in PASC patients in the media, there is a paucity of published data in the medical literature about this topic. During their medical consultation, the patients self-reported new changes in their symptoms or behaviors following the use of alcohol. A new onset of alcohol sensitivities should be assessed along with other post-COVID-19 symptoms and may provide novel avenues to explore the pathobiology of illness and potential interventions.
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Affiliation(s)
- Ella F Eastin
- Medicine, Stanford University School of Medicine, Palo Alto, USA
| | | | - Tom C Quach
- Medicine, Stanford University, Palo Alto, USA
| | - Hector F Bonilla
- Medicine, Stanford University School of Medicine, Palo Alto, USA
| | - Mitchell G Miglis
- Neurology & Neurological Sciences, Stanford University School of Medicine, Palo Alto, USA
| | - Phillip C Yang
- Medicine, Stanford University School of Medicine, Palo Alto, USA
| | - Linda N Geng
- Medicine, Stanford University School of Medicine, Palo Alto, USA
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Ege F, Kazci Ö. Median Nerves' Electrical Activation Reduces Ipsilateral Brachial Arteries' Blood Flow and Diameter. Ann Indian Acad Neurol 2023; 26:883-888. [PMID: 38229617 PMCID: PMC10789422 DOI: 10.4103/aian.aian_345_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/13/2023] [Accepted: 06/30/2023] [Indexed: 01/18/2024] Open
Abstract
Purpose Our main objective in this study was to determine whether there is a difference between ipsilateral and contralateral brachial arteries' flow parameters in response to median nerves' electrical activation. Material and Methods The study was conducted in healthy and active subjects. The arterial diameter and flow were measured using the probe from the brachial artery. Then, the median nerve was stimulated for 5 seconds via the bipolar stimulus electrode. Arterial diameter and flow were measured once more with the Doppler transducer, which kept going to monitor continuously just after the fifth stimulus. After a week, the same subjects are invited for the purpose of measuring the contralateral brachial arteries' vasomotor response to the same stimulus. Results Before electrical stimulation, the median flow rate was 72.15 ml/min; after stimulation, the median flow rate was 39.20 ml/min. The drop in flow after stimulation was statistically significant (P < 0.001). While the median value of brachial artery vessel diameter before median nerve stimulation in the entire study group was 3.50 mm, the median value of vessel diameter after stimulation was 2.90 mm. After stimulation, the median nerve diameter narrowed statistically significantly (P < 0.001). As for the contralateral brachial in response to the right median nerves' activation, no significant flow or diameter change was found (P = 0.600, P = 0.495, respectively). Conclusion We discovered that electrical stimulation of the median nerve caused significant changes in ipsilateral brachial artery blood flow and diameter in healthy volunteers. The same stimulation does not result in flow parameter changes in the contralateral brachial artery.
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Affiliation(s)
- Fahrettin Ege
- Department of Neurology, VM Medicalpark Hospital, Ankara, Türkiye
| | - Ömer Kazci
- Department of Radiology, Ankara Training and Research Hospital, Ankara, Türkiye
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Kawak P, Sawaftah NMA, Pitt WG, Husseini GA. Transferrin-Targeted Liposomes in Glioblastoma Therapy: A Review. Int J Mol Sci 2023; 24:13262. [PMID: 37686065 PMCID: PMC10488197 DOI: 10.3390/ijms241713262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/14/2023] [Accepted: 07/31/2023] [Indexed: 09/10/2023] Open
Abstract
Glioblastoma (GBM) is a highly aggressive brain tumor, and its treatment is further complicated by the high selectivity of the blood-brain barrier (BBB). The scientific community is urgently seeking innovative and effective therapeutic solutions. Liposomes are a promising new tool that has shown potential in addressing the limitations of chemotherapy, such as poor bioavailability and toxicity to healthy cells. However, passive targeting strategies based solely on the physicochemical properties of liposomes have proven ineffective due to a lack of tissue specificity. Accordingly, the upregulation of transferrin receptors (TfRs) in brain tissue has led to the development of TfR-targeted anticancer therapeutics. Currently, one of the most widely adopted methods for improving drug delivery in the treatment of GBM and other neurological disorders is the utilization of active targeting strategies that specifically target this receptor. In this review, we discuss the role of Tf-conjugated liposomes in GBM therapy and present some recent studies investigating the drug delivery efficiency of Tf-liposomes; in addition, we address some challenges currently facing this approach to treatment and present some potential improvement possibilities.
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Affiliation(s)
- Paul Kawak
- Chemical and Biological Engineering Department, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates;
| | - Nour M. Al Sawaftah
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates;
| | - William G. Pitt
- Chemical Engineering Department, Brigham Young University, Provo, UT 84602, USA
| | - Ghaleb A. Husseini
- Chemical and Biological Engineering Department, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates;
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates;
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Ege F, Kazci Ö, Aydin S. Diabetic neuropathy results in vasomotor dysfunction of medium sized peripheral arteries. World J Clin Cases 2023; 11:5244-5251. [PMID: 37621590 PMCID: PMC10445082 DOI: 10.12998/wjcc.v11.i22.5244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/06/2023] [Accepted: 07/03/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND The effect of the sympathetic nervous system on peripheral arteries causes vasoconstriction when smooth muscle cells in the walls of blood vessels contract, which leads to narrowing of arteries and reduction of the blood flow. AIM To compare sympathetic vasomotor activation of the brachial arteries in healthy subjects and patients with painful diabetic neuropathy; and therefore, to assess whether there is significant vasomotor dysfunction of medium sized arteries in diabetic neuropathy. METHODS The study included 41 diabetic neuropathy patients and 41 healthy controls. Baseline diameter and flow rate of the brachial arteries were measured. Then, using a bipolar stimulus electrode, a 10 mA, 1 Hz electrical stimulus was administered to the median nerve at the wrist level for 5 s. The brachial artery diameter and blood flow rate were re-measured after stimulation. RESULTS In the control group, the median flow rate was 70.0 mL/min prior to stimulation and 35.0 mL/min after stimulation, with a statistically significant decrease (P < 0.001), which is consistent with sympathetic nervous system functioning (vasoconstriction). In the diabetic neuropathy group, median flow rate before the stimulation was 35.0 mL/min. After stimulation, the median flow rate was 77.0 mL/min; thus, no significant decrease in the flow rate was detected. In the control group, the median brachial artery diameter, which was 3.6 mm prior to stimulation, decreased to 3.4 mm after stimulation, and this decrease was also statistically significant (P = 0.046). In the diabetic neuropathy group, the median brachial artery diameter increased from 3.4 mm to 3.6 mm following nerve stimulation. Once again, no narrowing was observed. CONCLUSION Our research suggests that diabetic neuropathy results in significant vasomotor dysfunction of medium sized peripheral arteries. Physiological vasoconstriction in response to sympathetic activation is impaired in diabetic neuropathy.
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Affiliation(s)
- Fahrettin Ege
- Department of Neurology, VM Medicalpark Hospital, Ankara 063200, Turkey
| | - Ömer Kazci
- Department of Radiology, Ankara Training and Research Hospital, Ankara 063200, Turkey
| | - Sonay Aydin
- Department of Radiology, Erzincan Binali Yıldırım University Faculty of Medicine, Erzincan 063200, Turkey
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9
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Ege F, Kazci Ö, Aydin S. Diabetic neuropathy results in vasomotor dysfunction of medium sized peripheral arteries. World J Clin Cases 2023; 11:5238-5245. [DOI: 10.12998/wjcc.v11.i22.5238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/06/2023] [Accepted: 07/03/2023] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND The effect of the sympathetic nervous system on peripheral arteries causes vasoconstriction when smooth muscle cells in the walls of blood vessels contract, which leads to narrowing of arteries and reduction of the blood flow.
AIM To compare sympathetic vasomotor activation of the brachial arteries in healthy subjects and patients with painful diabetic neuropathy; and therefore, to assess whether there is significant vasomotor dysfunction of medium sized arteries in diabetic neuropathy.
METHODS The study included 41 diabetic neuropathy patients and 41 healthy controls. Baseline diameter and flow rate of the brachial arteries were measured. Then, using a bipolar stimulus electrode, a 10 mA, 1 Hz electrical stimulus was administered to the median nerve at the wrist level for 5 s. The brachial artery diameter and blood flow rate were re-measured after stimulation.
RESULTS In the control group, the median flow rate was 70.0 mL/min prior to stimulation and 35.0 mL/min after stimulation, with a statistically significant decrease (P < 0.001), which is consistent with sympathetic nervous system functioning (vasoconstriction). In the diabetic neuropathy group, median flow rate before the stimulation was 35.0 mL/min. After stimulation, the median flow rate was 77.0 mL/min; thus, no significant decrease in the flow rate was detected. In the control group, the median brachial artery diameter, which was 3.6 mm prior to stimulation, decreased to 3.4 mm after stimulation, and this decrease was also statistically significant (P = 0.046). In the diabetic neuropathy group, the median brachial artery diameter increased from 3.4 mm to 3.6 mm following nerve stimulation. Once again, no narrowing was observed.
CONCLUSION Our research suggests that diabetic neuropathy results in significant vasomotor dysfunction of medium sized peripheral arteries. Physiological vasoconstriction in response to sympathetic activation is impaired in diabetic neuropathy.
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Affiliation(s)
- Fahrettin Ege
- Department of Neurology, VM Medicalpark Hospital, Ankara 063200, Turkey
| | - Ömer Kazci
- Department of Radiology, Ankara Training and Research Hospital, Ankara 063200, Turkey
| | - Sonay Aydin
- Department of Radiology, Erzincan Binali Yıldırım University Faculty of Medicine, Erzincan 063200, Turkey
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Gharesouran J, Hosseinzadeh H, Naghiloo A, Ghafouri-Fard S, Hussen BM, Taheri M, Rezazadeh M, Samadian M. Complete Loss of Myelin protein zero (MPZ) in a patient with a late onset Charcot-Marie-Tooth (CMT). Metab Brain Dis 2023; 38:1963-1970. [PMID: 36952089 DOI: 10.1007/s11011-023-01201-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 03/10/2023] [Indexed: 03/24/2023]
Abstract
Charcot-Marie-Tooth (CMT) comprises a group of hereditary neuropathies with clinical, epidemiological, and molecular heterogeneity in which variants in more than 80 different genes have been reported. One of the important genes which cause 5% of all CMT cases is Myelin protein zero (P0, MPZ). Variants in this gene have been reported in association with different forms of CMT including classical CMT1, severe DSS (CMT3B), DI-CMT, CMT2I and CMT2J with autosomal dominant (AD) inheritance. To our knowledge, MPZ variants have not been described in autosomal recessive (AR) form of CMT in previous studies. Moreover, its complete deletion has not been reported in human. Here, we described clinical characteristics of a patient with CMT symptoms who demonstrated manifestations of the disease late in his life. We performed exome sequencing for identifying CMT subtype and its associated gene, and follow that co-segregation analysis has been done to characterize inheritance pattern of the disorder. Through using exome sequencing, we identified a novel 4074 bp homozygote deletion which encompasses all 6 exons of the MPZ gene in this patient. After identifying the alteration, variant confirmation and co-segregation analysis have been performed by using specific primers. Our result revealed that the patient's parents were heterozygous for the alteration and they did not show any symptoms of CMT. Although most MPZ variants have been described with early onset CMT with AD pattern of inheritance, the reported patient in our study had late onset form and his parents did not show any symptoms. Considering substantial role of MPZ protein in the biogenesis of peripheral nervous system (PNS) myelin, we proposed that there should be another protein in PNS that compensates for lack of MPZ protein. Taken together, our finding is the first report of MPZ association with AR form of CMT with late onset features. Moreover, our results propose the presence of another protein in PNS myelin biogenesis and its assembly. However, functional studies alongside with other molecular studies are needed to confirm our results and identify the proposed protein.
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Affiliation(s)
- Jalal Gharesouran
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Hosseinzadeh
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Naghiloo
- Department of Orthopedic Surgery, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
| | - Maryam Rezazadeh
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Samadian
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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11
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Yaganoglu S, Kalyviotis K, Vagena-Pantoula C, Jülich D, Gaub BM, Welling M, Lopes T, Lachowski D, Tang SS, Del Rio Hernandez A, Salem V, Müller DJ, Holley SA, Vermot J, Shi J, Helassa N, Török K, Pantazis P. Highly specific and non-invasive imaging of Piezo1-dependent activity across scales using GenEPi. Nat Commun 2023; 14:4352. [PMID: 37468521 PMCID: PMC10356793 DOI: 10.1038/s41467-023-40134-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 07/11/2023] [Indexed: 07/21/2023] Open
Abstract
Mechanosensing is a ubiquitous process to translate external mechanical stimuli into biological responses. Piezo1 ion channels are directly gated by mechanical forces and play an essential role in cellular mechanotransduction. However, readouts of Piezo1 activity are mainly examined by invasive or indirect techniques, such as electrophysiological analyses and cytosolic calcium imaging. Here, we introduce GenEPi, a genetically-encoded fluorescent reporter for non-invasive optical monitoring of Piezo1-dependent activity. We demonstrate that GenEPi has high spatiotemporal resolution for Piezo1-dependent stimuli from the single-cell level to that of the entire organism. GenEPi reveals transient, local mechanical stimuli in the plasma membrane of single cells, resolves repetitive contraction-triggered stimulation of beating cardiomyocytes within microtissues, and allows for robust and reliable monitoring of Piezo1-dependent activity in vivo. GenEPi will enable non-invasive optical monitoring of Piezo1 activity in mechanochemical feedback loops during development, homeostatic regulation, and disease.
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Affiliation(s)
- Sine Yaganoglu
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
| | | | | | - Dörthe Jülich
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
| | - Benjamin M Gaub
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
| | - Maaike Welling
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
- Department of Bioengineering, Imperial College London, London, UK
| | - Tatiana Lopes
- Section of Investigative Medicine, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, UK
| | | | - See Swee Tang
- Department of Bioengineering, Imperial College London, London, UK
| | | | - Victoria Salem
- Department of Bioengineering, Imperial College London, London, UK
| | - Daniel J Müller
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
| | - Scott A Holley
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
| | - Julien Vermot
- Department of Bioengineering, Imperial College London, London, UK
| | - Jian Shi
- Leeds Institute of Cardiovascular and Metabolic Medicine, LIGHT Laboratories, University of Leeds, Leeds, UK
| | - Nordine Helassa
- Molecular and Clinical Sciences Research Institute, St. George's, University of London, London, UK
- Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Katalin Török
- Molecular and Clinical Sciences Research Institute, St. George's, University of London, London, UK
| | - Periklis Pantazis
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland.
- Department of Bioengineering, Imperial College London, London, UK.
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12
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Frynta D, Elmi HSA, Rexová K, Janovcová M, Rudolfová V, Štolhoferová I, Král D, Sommer D, Berti DA, Frýdlová P. Animals evoking fear in the Cradle of Humankind: snakes, scorpions, and large carnivores. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2023; 110:33. [PMID: 37405495 PMCID: PMC10322782 DOI: 10.1007/s00114-023-01859-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/11/2023] [Accepted: 06/14/2023] [Indexed: 07/06/2023]
Abstract
Theories explain the presence of fears and specific phobias elicited by animals in contemporary WEIRD (Western, educated, industrialized, rich, and democratic) populations by their evolutionary past in Africa. Nevertheless, empirical data about fears of animals in the Cradle of Humankind are still fragmentary. To fill this gap, we examined which local animals are perceived as the most frightening by Somali people, who inhabit a markedly similar environment and the region where humans have evolved. We asked 236 raters to rank 42 stimuli according to their elicited fear. The stimuli were standardized pictures of species representing the local fauna. The results showed that the most frightening animals were snakes, scorpions, the centipede, and large carnivores (cheetahs and hyenas). These were followed up by lizards and spiders. Unlike in Europe, spiders represent less salient stimuli than scorpions for Somali respondents in this study. This conforms to the hypothesis suggesting that fear of spiders was extended or redirected from other chelicerates.
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Affiliation(s)
- Daniel Frynta
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - Hassan Sh Abdirahman Elmi
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
- Amoud University, Borama, Somaliland
| | - Kateřina Rexová
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - Markéta Janovcová
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - Veronika Rudolfová
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - Iveta Štolhoferová
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - David Král
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - David Sommer
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - Daniel Alex Berti
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic
| | - Petra Frýdlová
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 43, Prague 2, Czech Republic.
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13
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Garcia TA, Jonak CR, Binder DK. The Role of Aquaporins in Spinal Cord Injury. Cells 2023; 12:1701. [PMID: 37443735 PMCID: PMC10340765 DOI: 10.3390/cells12131701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/08/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Edema formation following traumatic spinal cord injury (SCI) exacerbates secondary injury, and the severity of edema correlates with worse neurological outcome in human patients. To date, there are no effective treatments to directly resolve edema within the spinal cord. The aquaporin-4 (AQP4) water channel is found on plasma membranes of astrocytic endfeet in direct contact with blood vessels, the glia limitans in contact with the cerebrospinal fluid, and ependyma around the central canal. Local expression at these tissue-fluid interfaces allows AQP4 channels to play an important role in the bidirectional regulation of water homeostasis under normal conditions and following trauma. In this review, we consider the available evidence regarding the potential role of AQP4 in edema after SCI. Although more work remains to be carried out, the overall evidence indicates a critical role for AQP4 channels in edema formation and resolution following SCI and the therapeutic potential of AQP4 modulation in edema resolution and functional recovery. Further work to elucidate the expression and subcellular localization of AQP4 during specific phases after SCI will inform the therapeutic modulation of AQP4 for the optimization of histological and neurological outcomes.
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Affiliation(s)
- Terese A. Garcia
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Carrie R. Jonak
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Devin K. Binder
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
- Center for Glial-Neuronal Interactions, University of California, Riverside, CA 92521, USA
- Neuroscience Graduate Program, University of California, Riverside, CA 92521, USA
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14
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Lei A, Breit KR, Thomas JD. Prenatal alcohol and tetrahydrocannabinol exposure: Effects on spatial and working memory. Front Neurosci 2023; 17:1192786. [PMID: 37383100 PMCID: PMC10293645 DOI: 10.3389/fnins.2023.1192786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/15/2023] [Indexed: 06/30/2023] Open
Abstract
Introduction Alcohol and cannabis are widely used recreational drugs that can negatively impact fetal development, leading to cognitive impairments. However, these drugs may be used simultaneously and the effects of combined exposure during the prenatal period are not well understood. Thus, this study used an animal model to investigate the effects of prenatal exposure to ethanol (EtOH), Δ-9-tetrahydrocannabinol (THC), or the combination on spatial and working memory. Methods Pregnant Sprague-Dawley rats were exposed to vaporized ethanol (EtOH; 68 ml/h), THC (100 mg/ml), the combination, or vehicle control during gestational days 5-20. Adolescent male and female offspring were evaluated using the Morris water maze task to assess spatial and working memory. Results Prenatal THC exposure impaired spatial learning and memory in female offspring, whereas prenatal EtOH exposure impaired working memory. The combination of THC and EtOH did not exacerbate the effects of either EtOH or THC, although subjects exposed to the combination were less thigmotaxic, which might represent an increase in risk-taking behavior. Discussion Our results highlight the differential effects of prenatal exposure to THC and EtOH on cognitive and emotional development, with substance- and sex-specific patterns. These findings highlight the potential harm of THC and EtOH on fetal development and support public health policies aimed at reducing cannabis and alcohol use during pregnancy.
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Affiliation(s)
- Annie Lei
- Department of Psychology, Center for Behavioral Teratology, San Diego State University, San Diego, CA, United States
| | - Kristen R. Breit
- Department of Psychology, Center for Behavioral Teratology, San Diego State University, San Diego, CA, United States
- Department of Psychology, West Chester University of Pennsylvania, West Chester, PA, United States
| | - Jennifer D. Thomas
- Department of Psychology, Center for Behavioral Teratology, San Diego State University, San Diego, CA, United States
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15
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Kraus A, Garcia B, Ma J, Herrera KJ, Zwaka H, Harpaz R, Wong RY, Engert F, Salinas I. Olfactory detection of viruses shapes brain immunity and behavior in zebrafish. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.17.533129. [PMID: 37034630 PMCID: PMC10081220 DOI: 10.1101/2023.03.17.533129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Olfactory sensory neurons (OSNs) are constantly exposed to pathogens, including viruses. However, serious brain infection via the olfactory route rarely occurs. When OSNs detect a virus, they coordinate local antiviral immune responses to stop virus progression to the brain. Despite effective immune control in the olfactory periphery, pathogen-triggered neuronal signals reach the CNS via the olfactory bulb (OB). We hypothesized that neuronal detection of a virus by OSNs initiates neuroimmune responses in the OB that prevent pathogen invasion. Using zebrafish ( Danio rerio ) as a model, we demonstrate viral-specific neuronal activation of OSNs projecting into the OB, indicating that OSNs are electrically activated by viruses. Further, behavioral changes are seen in both adult and larval zebrafish after viral exposure. By profiling the transcription of single cells in the OB after OSNs are exposed to virus, we found that both microglia and neurons enter a protective state. Microglia and macrophage populations in the OB respond within minutes of nasal viral delivery followed decreased expression of neuronal differentiation factors and enrichment of genes in the neuropeptide signaling pathway in neuronal clusters. Pituitary adenylate-cyclase-activating polypeptide ( pacap ), a known antimicrobial, was especially enriched in a neuronal cluster. We confirm that PACAP is antiviral in vitro and that PACAP expression increases in the OB 1 day post-viral treatment. Our work reveals how encounters with viruses in the olfactory periphery shape the vertebrate brain by inducing antimicrobial programs in neurons and by altering host behavior.
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16
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Li W, Berlinicke C, Huang Y, Giera S, McGrath AG, Fang W, Chen C, Takaesu F, Chang X, Duan Y, Kumar D, Chang C, Mao HQ, Sheng G, Dodge JC, Ji H, Madden S, Zack DJ, Chamling X. High-throughput screening for myelination promoting compounds using human stem cell-derived oligodendrocyte progenitor cells. iScience 2023; 26:106156. [PMID: 36852281 PMCID: PMC9958491 DOI: 10.1016/j.isci.2023.106156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/18/2022] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
Promoting myelination capacity of endogenous oligodendrocyte precursor cells (OPCs) is a promising therapeutic approach for CNS demyelinating disorders such as Multiple Sclerosis (MS). To aid in the discovery of myelination-promoting compounds, we generated a genome-engineered human pluripotent stem cell (hPSC) line that consists of three reporters: identification-and-purification tag, GFP, and secreted-NanoLuc, driven by the endogenous PDGFRA, PLP1, and MBP genes, respectively. Using this cell line, we established a high-throughput drug screening platform and performed a small-molecule screen, which identified at least two myelination-promoting small-molecule (Ro1138452 and SR2211) that target prostacyclin (IP) receptor and retinoic acid receptor-related orphan receptor γ (RORγ), respectively. Single-cell-transcriptomic analysis of differentiating OPCs treated with these molecules further confirmed that they promote oligodendrocyte differentiation and revealed several pathways that are potentially modulated by them. The molecules and their target pathways provide promising targets for the possible development of remyelination-based therapy for MS and other demyelinating disorders.
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Affiliation(s)
- Weifeng Li
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Cynthia Berlinicke
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Yinyin Huang
- Sanofi Inc., Translational Science, 350 Water Street, Cambridge, MA, 02141, USA
| | - Stefanie Giera
- Sanofi Inc., Rare and Neurologic Diseases Therapeutic Area, 350 Water Street, Cambridge, MA, 02141, USA
| | - Anna G. McGrath
- Sanofi Inc., Rare and Neurologic Diseases Therapeutic Area, 350 Water Street, Cambridge, MA, 02141, USA
| | - Weixiang Fang
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Chaoran Chen
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Felipe Takaesu
- Wallace H. Coulter Department of Biomedical Engineering, Emory University School of Medicine & Georgia Institute of Technology, Atlanta, GA, USA
| | - Xiaoli Chang
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Yukan Duan
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Dinesh Kumar
- Sanofi Inc., Translational Science, 350 Water Street, Cambridge, MA, 02141, USA
| | - Calvin Chang
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Hai-Quan Mao
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Whiting School of Engineering Baltimore, MD 21218, USA
| | - Guoqing Sheng
- Sanofi Inc., Rare and Neurologic Diseases Therapeutic Area, 350 Water Street, Cambridge, MA, 02141, USA
| | - James C. Dodge
- Sanofi Inc., Rare and Neurologic Diseases Therapeutic Area, 350 Water Street, Cambridge, MA, 02141, USA
| | - Hongkai Ji
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Stephen Madden
- Sanofi Inc., Translational Science, 350 Water Street, Cambridge, MA, 02141, USA
| | - Donald J. Zack
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Xitiz Chamling
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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17
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Prolonged Longitudinal Transcutaneous Auricular Vagus Nerve Stimulation Effect on Striatal Functional Connectivity in Patients with Major Depressive Disorder. Brain Sci 2022; 12:brainsci12121730. [PMID: 36552189 PMCID: PMC9776392 DOI: 10.3390/brainsci12121730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/11/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Transcutaneous auricular vagus nerve stimulation (taVNS) is effective for treating major depressive disorder (MDD). We aimed to explore the modulating effect of prolonged longitudinal taVNS on the striatal subregions' functional connectivity (FC) in MDD patients. METHODS Sixteen MDD patients were enrolled and treated with taVNS for 8 weeks. Sixteen healthy control subjects (HCs) were recruited without intervention. The resting-state FC (rsFC) based on striatal subregion seed points and the Hamilton Depression Scale (HAMD) were evaluated in the MDD patients and HCs at baseline and after 8 weeks. A two-way ANCOVA test was performed on each rsFC metric to obtain the (group-by-time) interactions. RESULTS The rsFC values between the left ventral caudate (vCa) and right ventral prefrontal cortex (vPFC), and between the right nucleus accumbens (NAc) and right dorsal medial prefrontal cortex (dmPFC) and ventrolateral prefrontal cortex (vlPFC) are lower in the MDD patients compared to the HCs at baseline, and increase following taVNS; the rsFC values between the left vCa and right, superior occipital gyrus (SOG), and between the left dorsal caudate (dCa) and right cuneus are higher in MDD patients and decrease following taVNS. CONCLUSIONS Prolonged longitudinal taVNS can modulate the striatum rsFC with the prefrontal cortex, occipital cortex, temporal cortex, and intra-striatum, and these changes partly underlie any symptomatic improvements. The results indicate that prolonged longitudinal taVNS may produce beneficial treatment effects by modulating the cortical striatum circuitry in patients with MDD.
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18
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Sleep and Neuroimmunomodulation for Maintenance of Optimum Brain Function: Role of Noradrenaline. Brain Sci 2022; 12:brainsci12121725. [PMID: 36552184 PMCID: PMC9776456 DOI: 10.3390/brainsci12121725] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/03/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Immune function and sleep are two normal physiological processes to protect the living organism from falling sick. There is hardly any disease in which they remain unaffected, though the quantum of effect may differ. Therefore, we propose the existence of a strong correlation between sleep (quality or quantity) and immune response. This may be supported by the fact that sleep loss modulates many of the immunological molecules, which includes interferons; however, not much is known about their mechanism of action. Sleep is divided into rapid eye movement sleep (REMS) and non-REMS. For practical reasons, experimental studies have been conducted mostly by inducing loss of REMS. It has been shown that withdrawal of noradrenaline (NA) is a necessity for generation of REMS. Moreover, NA level increases in the brain upon REMS loss and the elevated NA is responsible for many of the sleep loss-associated symptoms. In this review, we describe how sleep (and its disturbance/loss) modulates the immune system by modulating the NA level in the brain or vice versa to maintain immune functions, physiological homeostasis, and normal healthy living. The increased levels of NA during REMS loss may cause neuroinflammation possibly by glial activation (as NA is a key modulator of microglia). Therefore, maintaining sleep hygiene plays a crucial role for a normal healthy living.
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She K, Pan W, Yan Y, Shi T, Chu Y, Cheng Y, Ma B, Song W. Genome-Wide Identification, Evolution and Expressional Analysis of OSCA Gene Family in Barley ( Hordeum vulgare L.). Int J Mol Sci 2022; 23:13027. [PMID: 36361820 PMCID: PMC9653715 DOI: 10.3390/ijms232113027] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/18/2022] [Accepted: 10/22/2022] [Indexed: 09/06/2023] Open
Abstract
The hyperosmolality-gated calcium-permeable channel gene family (OSCA) is one kind of conserved osmosensors, playing a crucial role in maintaining ion and water homeostasis and protecting cellular stability from the damage of hypertonic stress. Although it has been systematically characterized in diverse plants, it is necessary to explore the role of the OSCA family in barley, especially its importance in regulating abiotic stress response. In this study, a total of 13 OSCA genes (HvOSCAs) were identified in barley through an in silico genome search method, which were clustered into 4 clades based on phylogenetic relationships with members in the same clade showing similar protein structures and conserved motif compositions. These HvOSCAs had many cis-regulatory elements related to various abiotic stress, such as MBS and ARE, indicating their potential roles in abiotic stress regulation. Furthermore, their expression patterns were systematically detected under diverse stresses using RNA-seq data and qRT-PCR methods. All of these 13 HvOSCAs were significantly induced by drought, cold, salt and ABA treatment, demonstrating their functions in osmotic regulation. Finally, the genetic variations of the HvOSCAs were investigated using the re-sequencing data, and their nucleotide diversity in wild barley and landrace populations were 0.4966 × 10-3 and 0.391 × 10-3, respectively, indicating that a genetic bottleneck has occurred in the OSCA family during the barley evolution process. This study evaluated the genomic organization, evolutionary relationship and genetic expression of the OSCA family in barley, which not only provides potential candidates for further functional genomic study, but also contributes to genetically improving stress tolerance in barley and other crops.
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Affiliation(s)
- Kuijun She
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
- Crop Research Institute, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
| | - Wenqiu Pan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Ying Yan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Tingrui Shi
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Yingqi Chu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Yue Cheng
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Bo Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Weining Song
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
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20
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Stocchi F, Peckham EL, De Pandis MF, Sciarappa K, Kleiman R, Agbo F, Olanow CW, Blum D, Navia B. A Randomized Thorough QT Study of Apomorphine Sublingual Film in Patients With Parkinson's Disease. Clin Pharmacol Drug Dev 2022; 11:1068-1077. [PMID: 35899977 PMCID: PMC9541463 DOI: 10.1002/cpdd.1147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 06/29/2022] [Indexed: 01/26/2023]
Abstract
A randomized thorough QT study was conducted to assess the effects of apomorphine sublingual film (SL-APO) on corrected QT interval (QTc) and other cardiac conduction parameters in patients with Parkinson's disease (PD) and "OFF" episodes. Patients were titrated to an SL-APO dose that resulted in FULL "ON," followed by up to two additional doses (maximum 60 mg), then randomized at the highest tolerated dose to a treatment sequence of SL-APO, placebo, and moxifloxacin (400 mg, positive control) in a three-way crossover design. Changes from baseline in time-matched, placebo-adjusted Fridericia-corrected QTc interval (ΔΔQTcF) and Bazett-corrected QTc interval (ΔΔQTcB) were analyzed from postdose electrocardiograms. Forty patients were randomized and received single doses of study treatments. Upper limits of 90% confidence intervals (CIs) for ΔΔQTcF of SL-APO were below the 10-millisecond regulatory threshold at all prespecified timepoints, demonstrating no clinically significant effect on QTcF. Lower limits of 90% CIs for ΔΔQTcF of moxifloxacin exceeded the 5-millisecond regulatory threshold at all timepoints up to 3 hours, confirming assay sensitivity. SL-APO had no clinically meaningful effects on QTcB, PR/QRS intervals, heart rate, or electrocardiogram-derived morphology (EudraCT identifier: 2016-001762-29; ClinicalTrials.gov identifier: NCT03187301).
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Affiliation(s)
- Fabrizio Stocchi
- University San Raffaele and Institute for Research and Medical Care, IRCCS San Raffaele PisanaRomeItaly
| | | | | | - Ken Sciarappa
- Sunovion Pharmaceuticals Inc.MarlboroughMassachusettsUSA
| | | | - Felix Agbo
- Sunovion Pharmaceuticals Inc.TeaneckNew JerseyUSA
| | - C. Warren Olanow
- Mount Sinai School of MedicineNew YorkNew YorkUSA,ClintrexSarasotaFloridaUSA
| | - David Blum
- Sunovion Pharmaceuticals Inc.MarlboroughMassachusettsUSA
| | - Bradford Navia
- Sunovion Pharmaceuticals Inc.MarlboroughMassachusettsUSA
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21
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Mecawi AS, Varanda WA, da Silva MP. Osmoregulation and the Hypothalamic Supraoptic Nucleus: From Genes to Functions. Front Physiol 2022; 13:887779. [PMID: 35685279 PMCID: PMC9171026 DOI: 10.3389/fphys.2022.887779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/18/2022] [Indexed: 11/13/2022] Open
Abstract
Due to the relatively high permeability to water of the plasma membrane, water tends to equilibrate its chemical potential gradient between the intra and extracellular compartments. Because of this, changes in osmolality of the extracellular fluid are accompanied by changes in the cell volume. Therefore, osmoregulatory mechanisms have evolved to keep the tonicity of the extracellular compartment within strict limits. This review focuses on the following aspects of osmoregulation: 1) the general problems in adjusting the "milieu interieur" to challenges imposed by water imbalance, with emphasis on conceptual aspects of osmosis and cell volume regulation; 2) osmosensation and the hypothalamic supraoptic nucleus (SON), starting with analysis of the electrophysiological responses of the magnocellular neurosecretory cells (MNCs) involved in the osmoreception phenomenon; 3) transcriptomic plasticity of SON during sustained hyperosmolality, to pinpoint the genes coding membrane channels and transporters already shown to participate in the osmosensation and new candidates that may have their role further investigated in this process, with emphasis on those expressed in the MNCs, discussing the relationships of hydration state, gene expression, and MNCs electrical activity; and 4) somatodendritic release of neuropeptides in relation to osmoregulation. Finally, we expect that by stressing the relationship between gene expression and the electrical activity of MNCs, studies about the newly discovered plastic-regulated genes that code channels and transporters in the SON may emerge.
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Affiliation(s)
- André Souza Mecawi
- Laboratory of Molecular Neuroendocrinology, Department of Biophysics, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Wamberto Antonio Varanda
- Department of Physiology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Melina Pires da Silva
- Laboratory of Cellular Neuroendocrinology, Department of Biophysics, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil
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22
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Cai L, Shi Z, Chen H, Du Q, Zhang Y, Zhao Z, Wang J, Lang Y, Kong L, Zhou H. Relationship between the Clinical Characteristics in Patients with Neuromyelitis Optica Spectrum Disorders and Clinical Immune Indicators: A Retrospective Study. Brain Sci 2022; 12:brainsci12030372. [PMID: 35326328 PMCID: PMC8946705 DOI: 10.3390/brainsci12030372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/16/2022] [Accepted: 03/08/2022] [Indexed: 02/01/2023] Open
Abstract
Objective: T lymphocytes, complement, and immunoglobulin play an important role in neuromyelitis optica spectrum disorders (NMOSD). As common clinical examination indicators, they have been used as routine indicators in many hospitals, which is convenient for being carried out in clinical work, but there are few articles of guiding significance for clinical practice. The purpose of this study was to study the relationship between commonly used immune indicators and clinical characteristics in patients with NMOSD. Methods: We compared clinical characteristics and clinical immune indicators in 258 patients with NMOSD and 200 healthy controls (HCs). We used multiple linear regression to study the relationship between immunotherapy, disease phase, sex, age, AQP4-IgG, and immune indicators. In addition, lymphocyte subsets were compared before and after immunotherapy in 24 of the 258 patients. We explored the influencing factors and predictors of severe motor disability. Results: The percentages of CD3 ratio (71.4% vs. 73.8%, p = 0.013), CD4 ratio (38.8% vs. 42.2%, p < 0.001), and CD4/CD8 ratio (1.43 vs. 1.66, p < 0.001) in NMOSD patients were significantly lower than those in the HC group. In addition, complement C4 (0.177 g/L vs. 0.221 g/L, p < 0.001) and peripheral blood IgG (10.95 g/L vs. 11.80 g/L, p = 0.026) in NMOSD patients were significantly lower than those in the HC group. CD3 percentage was correlated with blood collection age and disease stage; CD8 percentage was correlated with blood collection age, disease stage, and treatment; CD4/CD8 percentage was correlated with blood collection age and treatment; complement C4 was correlated with blood collection age and sex; and IgG was correlated with disease stage and treatment. Twenty-four patients before and after treatment showed that the percentages of CD3 ratio (74.8% vs. 66.7%, p = 0.001) and CD8 ratio (32.4% vs. 26.2%, p < 0.001) after treatment in NMOSD patients were significantly increased, and the percentage of CD3 before treatment was moderately negatively correlated with ARR (r = −0.507, p = 0.011). Binary logistic regression analysis showed that peripheral blood complement C3 is a serious influencing factor for severe motor disability (EDSS score ≥ 6 points). Peripheral blood complement C3 and C4 are predictors of severe motor disability (p < 0.05). Conclusion: Our results suggest that peripheral blood T lymphocytes, C3, C4 and immunoglobulin are convenient and routine clinical indicators that are convenient for implementation in clinical work. They have certain reference values for disease staging, recurrence, drug efficacy, and motor disability. They have improved our understanding of clinical immune indicators for NMOSD patients, but whether they can be used as biomarkers for clinical prognosis remains to be further studied.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Hongyu Zhou
- Correspondence: ; Tel./Fax: +86-28-8542-2892
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23
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Mirabelli E, Elkabes S. Neuropathic Pain in Multiple Sclerosis and Its Animal Models: Focus on Mechanisms, Knowledge Gaps and Future Directions. Front Neurol 2022; 12:793745. [PMID: 34975739 PMCID: PMC8716468 DOI: 10.3389/fneur.2021.793745] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/17/2021] [Indexed: 12/22/2022] Open
Abstract
Multiple sclerosis (MS) is a multifaceted, complex and chronic neurological disease that leads to motor, sensory and cognitive deficits. MS symptoms are unpredictable and exceedingly variable. Pain is a frequent symptom of MS and manifests as nociceptive or neuropathic pain, even at early disease stages. Neuropathic pain is one of the most debilitating symptoms that reduces quality of life and interferes with daily activities, particularly because conventional pharmacotherapies do not adequately alleviate neuropathic pain. Despite advances, the mechanisms underlying neuropathic pain in MS remain elusive. The majority of the studies investigating the pathophysiology of MS-associated neuropathic pain have been performed in animal models that replicate some of the clinical and neuropathological features of MS. Experimental autoimmune encephalomyelitis (EAE) is one of the best-characterized and most commonly used animal models of MS. As in the case of individuals with MS, rodents affected by EAE manifest increased sensitivity to pain which can be assessed by well-established assays. Investigations on EAE provided valuable insights into the pathophysiology of neuropathic pain. Nevertheless, additional investigations are warranted to better understand the events that lead to the onset and maintenance of neuropathic pain in order to identify targets that can facilitate the development of more effective therapeutic interventions. The goal of the present review is to provide an overview of several mechanisms implicated in neuropathic pain in EAE by summarizing published reports. We discuss current knowledge gaps and future research directions, especially based on information obtained by use of other animal models of neuropathic pain such as nerve injury.
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Affiliation(s)
- Ersilia Mirabelli
- Reynolds Family Spine Laboratory, Department of Neurosurgery, New Jersey Medical School, Rutgers the State University of New Jersey, Newark, NJ, United States.,Department of Biology and Chemistry, School of Health Sciences, Liberty University, Lynchburg, VA, United States
| | - Stella Elkabes
- Reynolds Family Spine Laboratory, Department of Neurosurgery, New Jersey Medical School, Rutgers the State University of New Jersey, Newark, NJ, United States
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24
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Wang H, Zhou J, Li Y, Wei L, Xu X, Zhang J, Yang K, Wei S, Zhang W. Adverse events of rituximab in neuromyelitis optica spectrum disorder: a systematic review and meta-analysis. Ther Adv Neurol Disord 2021; 14:17562864211056710. [PMID: 34950240 PMCID: PMC8689613 DOI: 10.1177/17562864211056710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 10/10/2021] [Indexed: 01/10/2023] Open
Abstract
Background: The adverse events (AEs) of rituximab (RTX) for neuromyelitis optica spectrum disorder (NMOSD) are incompletely understood. Aim: To collate information on the reported the AEs of RTX in NMOSD and assess the quality of evidence. Methods: PubMed, EMBASE, Web of Science, Cochrane Library, Wanfang Data, CBM, CNKI, VIP, clinicaltrials.gov, and so on were searched for studies with control groups as well as for case series that had assessed the RTX-associated AEs. The incidence of AEs and the comparison of AE risks among different therapies were pooled. The GRADE was developed for evidence quality. Results: A total of 3566 records were identified. Finally, 36 studies (4 RCTs, 6 crochet studies, 2 NRCTs, and 24 case series), including 1542 patients (1299 females and 139 males), were included for final analyses. Rates of patients with any AEs, any serious AEs (SAEs), infusion-related AEs, any infection, respiratory infection, urinary infection, and death were 28.57%, 5.66%, 27.01%, 17.36%, 4.76%, 4.76%, and 0.17%, respectively. The results from subgroup analysis showed that AE rates were most likely not associated with covariates such as duration of illness and study designs. Very low-quality evidence suggested that the risk ratios (RR) of any AEs (0.84, 95% CI = 00.42–1.69, p = 0.62) and any infections (1.24 95% CI = 0.18–8.61) of RTX were similar to that of azathioprine, and the RR of any AEs of RXT was akin to that of mycophenolate mofetil (0.66, 95% CI = 0.32–1.35 p = 0.26). Evidence of low to high quality showed the lower RR of RTX in other AEs, but not in infusion-related AEs. Strategies to handle AEs focused on symptomatic treatments. Conclusions: RTX is mostly safer than other immunosuppressants in NMOSD: the incidence of RTX-associated AEs was not high, and when present, the AEs were usually mild or moderate and could be well controlled. Given its efficacy and safety, RTX could be recommended as a first-line treatment for NMOSD.
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Affiliation(s)
- Hao Wang
- Ophthalmology Department, The Second Hospital, Lanzhou University, Lanzhou, China
| | - Juanping Zhou
- Ophthalmology Department, The Second Hospital, Lanzhou University, Lanzhou, China
| | - Yi Li
- Ophthalmology Department, The Second Hospital, Lanzhou University, Lanzhou, China
| | - Lili Wei
- Evidence-Based Medicine Center, Lanzhou University, Lanzhou, China
| | - Xintong Xu
- Ophthalmology Division, 3rd Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jianping Zhang
- Ophthalmology Department, The Second Hospital, Lanzhou University, Lanzhou, China
| | - Kehu Yang
- Evidence-Based Medicine Center, Lanzhou University, Lanzhou, China
| | - Shihui Wei
- Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing 100853 China
| | - Wenfang Zhang
- Ophthalmology Department, The Second Hospital, Lanzhou University, Lanzhou 730000, China
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25
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Perez-García P, Pardillo-Díaz R, Geribaldi-Doldán N, Gómez-Oliva R, Domínguez-García S, Castro C, Nunez-Abades P, Carrascal L. Refinement of Active and Passive Membrane Properties of Layer V Pyramidal Neurons in Rat Primary Motor Cortex During Postnatal Development. Front Mol Neurosci 2021; 14:754393. [PMID: 34924951 PMCID: PMC8671142 DOI: 10.3389/fnmol.2021.754393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/19/2021] [Indexed: 11/13/2022] Open
Abstract
Achieving the distinctive complex behaviors of adult mammals requires the development of a great variety of specialized neural circuits. Although the development of these circuits begins during the embryonic stage, they remain immature at birth, requiring a postnatal maturation process to achieve these complex tasks. Understanding how the neuronal membrane properties and circuits change during development is the first step to understand their transition into efficient ones. Thus, using whole cell patch clamp recordings, we have studied the changes in the electrophysiological properties of layer V pyramidal neurons of the rat primary motor cortex during postnatal development. Among all the parameters studied, only the voltage threshold was established at birth and, although some of the changes occurred mainly during the second postnatal week, other properties such as membrane potential, capacitance, duration of the post-hyperpolarization phase or the maximum firing rate were not defined until the beginning of adulthood. Those modifications lead to a decrease in neuronal excitability and to an increase in the working range in young adult neurons, allowing more sensitive and accurate responses. This maturation process, that involves an increase in neuronal size and changes in ionic conductances, seems to be influenced by the neuronal type and by the task that neurons perform as inferred from the comparison with other pyramidal and motor neuron populations.
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Affiliation(s)
- Patricia Perez-García
- Department of Physiology, School of Pharmacy, University of Seville, Seville, Spain.,Division of Physiology, School of Medicine, University of Cádiz, Cádiz, Spain
| | - Ricardo Pardillo-Díaz
- Division of Physiology, School of Medicine, University of Cádiz, Cádiz, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain
| | - Noelia Geribaldi-Doldán
- Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain.,Department of Human Anatomy and Embriology, University of Cádiz, Cádiz, Spain
| | - Ricardo Gómez-Oliva
- Division of Physiology, School of Medicine, University of Cádiz, Cádiz, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain
| | - Samuel Domínguez-García
- Division of Physiology, School of Medicine, University of Cádiz, Cádiz, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain
| | - Carmen Castro
- Division of Physiology, School of Medicine, University of Cádiz, Cádiz, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain
| | - Pedro Nunez-Abades
- Department of Physiology, School of Pharmacy, University of Seville, Seville, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain
| | - Livia Carrascal
- Department of Physiology, School of Pharmacy, University of Seville, Seville, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA), Cádiz, Spain
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26
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Jiang Y, Guan Y, Lan Y, Chen S, Li T, Zou S, Hu Z, Ye Q. Mechanosensitive Piezo1 in Periodontal Ligament Cells Promotes Alveolar Bone Remodeling During Orthodontic Tooth Movement. Front Physiol 2021; 12:767136. [PMID: 34880779 PMCID: PMC8645976 DOI: 10.3389/fphys.2021.767136] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 09/29/2021] [Indexed: 02/05/2023] Open
Abstract
Orthodontic tooth movement (OTM) is a process depending on the remodeling of periodontal tissues surrounding the roots. Orthodontic forces trigger the conversion of mechanical stimuli into intercellular chemical signals within periodontal ligament (PDL) cells, activating alveolar bone remodeling, and thereby, initiating OTM. Recently, the mechanosensitive ion channel Piezo1 has been found to play pivotal roles in the different types of human cells by transforming external physical stimuli into intercellular chemical signals. However, the function of Piezo1 during the mechanotransduction process of PDL cells has rarely been reported. Herein, we established a rat OTM model to study the potential role of Piezo1 during the mechanotransduction process of PDL cells and investigate its effects on the tension side of alveolar bone remodeling. A total of 60 male Sprague-Dawley rats were randomly assigned into three groups: the OTM + inhibitor (INH) group, the OTM group, and the control (CON) group. Nickel-titanium orthodontic springs were applied to trigger tooth movement. Mice were sacrificed on days 0, 3, 7, and 14 after orthodontic movement for the radiographic, histological, immunohistochemical, and molecular biological analyses. Our results revealed that the Piezo1 channel was activated by orthodontic force and mainly expressed in the PDL cells during the whole tooth movement period. The activation of the Piezo1 channel was essential for maintaining the rate of orthodontic tooth movement and facilitation of new alveolar bone formation on the tension side. Reduced osteogenesis-associated transcription factors such as Runt-related transcription factor 2 (RUNX2), Osterix (OSX), and receptor activator of nuclear factor-kappa B ligand (RANKL)/osteoprotegerin (OPG) ratio were examined when the function of Piezo1 was inhibited. In summary, Piezo1 plays a critical role in mediating both the osteogenesis and osteoclastic activities on the tension side during OTM.
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Affiliation(s)
- Yukun Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuzhe Guan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuanchen Lan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shuo Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tiancheng Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhiai Hu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qingsong Ye
- Center of Regenerative Medicine, Renmin Hospital of Wuhan University, Wuhan, China.,Center of Regenerative Medicine, Renmin Hospital of Wuhan University, Wuhan, China
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27
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Almengló C, Caamaño P, Fraga M, Devesa J, Costoya JA, Arce VM. From neural stem cells to glioblastoma: A natural history of GBM recapitulated in vitro. J Cell Physiol 2021; 236:7390-7404. [PMID: 33959982 DOI: 10.1002/jcp.30409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 04/12/2021] [Accepted: 04/19/2021] [Indexed: 02/03/2023]
Abstract
Due to its aggressive and invasive nature glioblastoma (GBM), the most common and aggressive primary brain tumour in adults, remains almost invariably lethal. Significant advances in the last several years have elucidated much of the molecular and genetic complexities of GBM. However, GBM exhibits a vast genetic variation and a wide diversity of phenotypes that have complicated the development of effective therapeutic strategies. This complex pathogenesis makes necessary the development of experimental models that could be used to further understand the disease, and also to provide a more realistic testing ground for potential therapies. In this report, we describe the process of transformation of primary mouse embryo astrocytes into immortalized cultures with neural stem cell characteristics, that are able to generate GBM when injected into the brain of C57BL/6 mice, or heterotopic tumours when injected IV. Overall, our results show that oncogenic transformation is the fate of NSC if cultured for long periods in vitro. In addition, as no additional hit is necessary to induce the oncogenic transformation, our model may be used to investigate the pathogenesis of gliomagenesis and to test the effectiveness of different drugs throughout the natural history of GBM.
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Affiliation(s)
- Cristina Almengló
- Molecular Oncology Laboratory MOL, Departamento de Fisioloxía, Centro Singular de Investigación en Medicina Molecular e Enfermidades Crónicas CiMUS, Facultade de Medicina, Universidade de Santiago de Compostela, Instituto de Investigación Sanitaria de Santiago de Compostela IDIS, Santiago de Compostela, Spain
| | - Pilar Caamaño
- Fundación Publica Galega de Medicina Xenómica, Santiago de Compostela, Spain
| | - Máximo Fraga
- Departamento de Anatomía Patolóxica e Ciencias Forenses, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Jesús Devesa
- Research and Development, Medical Center Foltra, Teo, Spain
| | - José A Costoya
- Molecular Oncology Laboratory MOL, Departamento de Fisioloxía, Centro Singular de Investigación en Medicina Molecular e Enfermidades Crónicas CiMUS, Facultade de Medicina, Universidade de Santiago de Compostela, Instituto de Investigación Sanitaria de Santiago de Compostela IDIS, Santiago de Compostela, Spain
| | - Víctor M Arce
- Molecular Oncology Laboratory MOL, Departamento de Fisioloxía, Centro Singular de Investigación en Medicina Molecular e Enfermidades Crónicas CiMUS, Facultade de Medicina, Universidade de Santiago de Compostela, Instituto de Investigación Sanitaria de Santiago de Compostela IDIS, Santiago de Compostela, Spain
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Guo Y, Zhang L, Zhang J, Lv SX, Du CX, Wang T, Wang HS, Xie W, Liu J. Activation and Blockade of Serotonin-4 Receptors in the Lateral Habenula Produce Antidepressant Effects in the Hemiparkinsonian Rat. Neuropsychobiology 2021; 80:52-63. [PMID: 32663830 DOI: 10.1159/000508680] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 05/05/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND The 5-hydroxytryptamine (5-HT) neurotransmitter system and lateral habenula (LHb) are involved in the regulation of depression, while the mechanisms remain to be clarified. OBJECTIVES The effects and possible mecha-nism underlying activation or blockade of 5-HT4 receptors (5-HT4Rs) in the LHb in depression were investigated by behavioral and neurochemical methods based on a Parkinson's disease (PD) rat model. METHOD 6-Hydroxydopamine (6-OHDA) was injected unilaterally into the substantia nigra pars compacta to establish the PD rat model. The depressive-like behaviors were measured by the forced swimming test (FST) and sucrose preference test (SPT). The concentrations of dopamine (DA), noradrenaline (NA) and 5-HT in the related brain regions were measured by a neurochemical method. RESULTS The 6-OHDA lesions increased the immobility time in the FST and decreased the sucrose consumption in the SPT, suggesting the induction of depressive-like behaviors. Intra-LHb injection of BIMU-8 (5-HT4R agonist) or GR113808 (5-HT4R antagonist) produced antidepressant effects in the lesioned rats. Intra-LHb injection of BIMU-8 significantly increased the DA levels in the medial prefrontal cortex (mPFC) and ventral hippocampus (vHip), increased the 5-HT level in the mPFC and decreased the NA level in the vHip only in the lesioned rats, while intra-LHb injection of GR113808 changed DA, NA and 5-HT levels in the mPFC, LHb and vHip in both sham and the lesioned rats. CONCLUSIONS All these results suggest that activation or blockade of the LHb 5-HT4Rs produce antidepressant effects in the 6-OHDA-lesioned rats, which are related to the changes of monoamines in the limbic and limbic-related regions.
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Affiliation(s)
- Yuan Guo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Li Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Jin Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Shu-Xuan Lv
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Cheng-Xue Du
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Tao Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Hui-Sheng Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Wen Xie
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Jian Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China,
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Zeinali H, Baluchnejadmojarad T, Roghani M. Diosgenin ameliorates cellular and molecular changes in multiple sclerosis in C57BL/6 mice. Mult Scler Relat Disord 2021; 55:103211. [PMID: 34425463 DOI: 10.1016/j.msard.2021.103211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/24/2021] [Accepted: 08/09/2021] [Indexed: 11/26/2022]
Abstract
Multiple sclerosis (MS) is especially known as a demyelinating disease of the central nervous system. Current treatments for MS are mostly based on controlling neuroinflammation and there are no treatments to promote the remyelination process at present. Diosgenin is a known herbal anti-inflammatory and antioxidant agent, which has also been shown to stimulate the growth of myelin in vitro. However, there is no or little evidence about diosgenin effects; specially on myelination, neuroprotection and its corresponding mechanisms in vivo in experimental autoimmune encephalomyelitis (EAE) as the most valid experimental model of MS. In this study, the therapeutic effect of diosgenin on clinical signs of EAE, and the corresponding cellular and molecular mechanisms have been examined with emphasis on myelination and neuroprotection mechanisms. EAE was induced using myelin oligodendrocyte glycoprotein (MOG) antigen in C57BL/6 mice. Diosgenin was gavaged (100 mg/kg) daily with the onset of paralysis signs (half tail paralysis) until the 18th post-immunization day in the treatment group. Blood and spinal cord tissue sampling was performed on post-immunization day 18. Lumbar spinal cord inflammation, demyelination, and axonal degeneration were assessed using Hematoxylin and Eosin (H & E), Luxol Fast Blue (LFB), and Bielschowsky's silver staining methods, respectively. Serum and spinal cord tissue level of tumor necrosis factor alpha (TNFα) and tissue levels of matrix metalloproteinase 9 (MMP-9) and interleukin 17 (IL-17) as inflammatory markers, microtubule-associated proteins 1A/1B light chain 3A (MAP1LC3A), and activity dependent neuroprotector homeobox (ADNP) as neuroprotective markers were assayed using enzyme linked immunosorbent assay (ELISA) method. The clinical score of EAE in the diosgenin treatment group was significantly reduced compared to the EAE group on days 15 to 18 after induction of the EAE (p < 0.001). Inflammation, demyelination and axonal loss scores also decreased significantly in the diosgenin treatment group compared to the EAE group (p < 0.05). Serum and spinal cord tissue level of TNFα and tissue level of MMP-9 considerably decreased in the diosgenin treatment group in comparison with the EAE group (p < 0.01). Diosgenin treatment had no significant effects on the tissue levels of IL-17, ADNP and MAP1LC3A. Therefore, diosgenin improved the clinical signs of EAE through lowering neuroinflammation, demyelination and axonal degeneration, but did not significantly affect the neuroprotective factors in this study. As a result, diosgenin could be a good candidate for new MS treatment strategies that, in addition to their anti-inflammatory effects, also enhance myelination.
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Affiliation(s)
- Hossein Zeinali
- Department of Physiology, School of Medicine, Qom University of Medical Sciences, Qom, Iran; Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran.
| | | | - Mehrdad Roghani
- Neurophysiology Research Center, Shahed University, Tehran, Iran
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Auffret M, Meuric V, Boyer E, Bonnaure-Mallet M, Vérin M. Oral Health Disorders in Parkinson's Disease: More than Meets the Eye. JOURNAL OF PARKINSONS DISEASE 2021; 11:1507-1535. [PMID: 34250950 PMCID: PMC8609694 DOI: 10.3233/jpd-212605] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Despite clinical evidence of poor oral health and hygiene in Parkinson’s disease (PD) patients, the mouth is often overlooked by both patients and the medical community, who generally focus on motor or psychiatric disorders considered more burdensome. Yet, oral health is in a two-way relationship with overall health—a weakened status triggering a decline in the quality of life. Here, we aim at giving a comprehensive overview of oral health disorders in PD, while identifying their etiologies and consequences. The physical (abnormal posture, muscle tone, tremor, and dyskinesia), behavioral (cognitive and neuropsychiatric disorders), and iatrogenic patterns associated with PD have an overall detrimental effect on patients’ oral health, putting them at risk for other disorders (infections, aspiration, pain, malnutrition), reducing their quality of life and increasing their isolation (anxiety, depression, communication issues). Interdisciplinary cooperation for prevention, management and follow-up strategies need to be implemented at an early stage to maintain and improve patients’ overall comfort and condition. Recommendations for practice, including (non-)pharmacological management strategies are discussed, with an emphasis on the neurologists’ role. Of interest, the oral cavity may become a valuable tool for diagnosis and prognosis in the near future (biomarkers). This overlooked but critical issue requires further attention and interdisciplinary research.
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Affiliation(s)
- Manon Auffret
- Behavior & Basal Ganglia Research Unit (EA 4712), University of Rennes 1, Rennes, France.,Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France
| | - Vincent Meuric
- INSERM, INRAE, Université de Rennes 1, CHU de Rennes, Nutrition Metabolisms and Cancer, Rennes, France
| | - Emile Boyer
- INSERM, INRAE, Université de Rennes 1, CHU de Rennes, Nutrition Metabolisms and Cancer, Rennes, France
| | - Martine Bonnaure-Mallet
- INSERM, INRAE, Université de Rennes 1, CHU de Rennes, Nutrition Metabolisms and Cancer, Rennes, France
| | - Marc Vérin
- Behavior & Basal Ganglia Research Unit (EA 4712), University of Rennes 1, Rennes, France.,Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France.,Movement Disorders Unit, Neurology Department, Pontchaillou University Hospital, Rennes, France
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31
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Jaster JH, Biagi R, Giannì AB, Ottaviani G. Gravitational ischemia in the brain-may contribute to delirium and mortality in the intensive care unit. Cardiovasc Pathol 2021; 54:107349. [PMID: 34129924 DOI: 10.1016/j.carpath.2021.107349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/24/2021] [Accepted: 05/26/2021] [Indexed: 12/18/2022] Open
Affiliation(s)
| | - Roberto Biagi
- School of Dentistry, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Aldo Bruno Giannì
- School of Dentistry, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy; UOC di Chirurgia Maxillo-Facciale ed Odontostomatologia, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giulia Ottaviani
- Anatomic Pathology, Lino Rossi Research Center, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.
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32
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Jaster JH. Gravity in the brain-how it may regulate skeletal muscle metabolism by balancing compressive ischemic changes in the weight-bearing pituitary and hypothalamus. Physiol Rep 2021; 9:e14878. [PMID: 34042300 PMCID: PMC8157765 DOI: 10.14814/phy2.14878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 04/25/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022] Open
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Jaster JH. Gravity in the brain: how compressive ischemic changes in the weight-bearing brainstem autonomic nuclei may contribute to vascular endothelial dysfunction elsewhere in the body following sleep deprivation. Am J Physiol Heart Circ Physiol 2021; 320:H1415-H1416. [PMID: 33759589 DOI: 10.1152/ajpheart.00059.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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34
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Clarke RW. Theory of cell membrane interaction with glass. Phys Rev E 2021; 103:032401. [PMID: 33862714 DOI: 10.1103/physreve.103.032401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 01/19/2021] [Indexed: 11/07/2022]
Abstract
There are three regimes of cell membrane interaction with glass: Tight and loose adhesion, separated by repulsion. Explicitly including hydration, this paper evaluates the pressure between the surfaces as functions of distance for ion correlation and ion-screened electrostatics and electromagnetic fluctuations. The results agree with data for tight adhesion energy (0.5-3 vs 0.4-4 mJ/m^{2}), detachment pressure (7.9 vs. 9 MPa), and peak repulsion (3.4-7.5 vs. 5-10 kPa), also matching the repulsion's distance dependence on renormalization by steric pressure mainly from undulations.
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Affiliation(s)
- Richard W Clarke
- National Physical Laboratory, Teddington, TW11 0LW, United Kingdom
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35
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Correa-Díaz EP, Torres-Herrán GE, Miño Zambrano JE, Paredes-Gonzalez V, Caiza-Zambrano FJ. Impact of Rituximab on relapse rate and disability in an Ecuadorian cohort of patients with neuromyelitis optica spectrum disorders. Mult Scler Relat Disord 2020; 48:102683. [PMID: 33338945 DOI: 10.1016/j.msard.2020.102683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/29/2020] [Accepted: 12/06/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND Neuromyelitis Optica Spectrum Disorder (NMOSD) is a severe inflammatory demyelinating disease of the central nervous system that often causes disability. Based on evidence from prospective and retrospective studies, Rituximab (RTX) has been used as the first-line of therapy in NMOSD. Nevertheless, evidence of the impact of RTX on relapse rate and disability in Ecuadorian patients with NMOSD is lacking. OBJECTIVE To evaluate the impact of RTX in an Ecuadorian cohort of patients with NMOSD. MATERIALS AND METHODS A retrospective study was conducted in a cohort of patients with NMOSD who received treatment with RTX in a third-level hospital in Quito, Ecuador. Digital medical records of NMOSD patients were reviewed to attain sociodemographic data, disease characteristics, and treatment with RTX. The annualized relapse rate ARR, as well as the degree of disability measured through the expanded disability scale (EDSS), was established before and after treatment. RESULTS Twenty-three patients with NMOSD treated with RTX were included, the mean age of onset of the disease was 37.2 years (range, 13-64.5). The average duration of disease was 8.5 years (range, 1.3-34.4). Positivity for antibodies against aquaporin-4 (AQP4-IgG) was identified in 78% of the patients. The mean duration of the treatment with RTX was 40 months (range, 12-61). After the RTX therapy, the number of relapses was reduced in 91% (21/23) of cases. The annualized relapsed rate (ARR) was reduced with RTX from 1.89 to 0.12 (p <0.001). The mean EDSS was also reduced from 4.8 to 3.9 (p = 0.014). In all patients, the mean EDSS was reduced or stabilized with RTX. Overall, the drug was well tolerated, the most frequent adverse events were infections which were present in 65.2% of cases. CONCLUSIONS Though with the limitations of and observational study, our data support RTX effectiveness and safety in an Ecuadorian cohort of patients with NMOSD.
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36
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If Artificial In Vitro Microenvironment Can Influence Tumor Drug Resistance Network via Modulation of lncRNA Expression?-Comparative Analysis of Glioblastoma-Derived Cell Culture Models and Initial Tumors In Vivo. Cell Mol Neurobiol 2020; 42:1005-1020. [PMID: 33245508 PMCID: PMC8942942 DOI: 10.1007/s10571-020-00991-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 10/28/2020] [Indexed: 12/20/2022]
Abstract
The tumor resistance of glioblastoma cells in vivo is thought to be enhanced by their heterogeneity and plasticity, which are extremely difficult to curb in vitro. The external microenvironment shapes the molecular profile of tumor culture models, thus influencing potential therapy response. Our study examines the expression profile of selected lncRNAs involved in tumor resistance network in three different glioblastoma-derived models commonly utilized for testing drug response in vitro. Differential expression analysis revealed significant divergence in lncRNA profile between parental tumors and tumor-derived cell cultures in vitro, including the following particles: MALAT1, CASC2, H19, TUSC7, XIST, RP11-838N2.4, DLX6-AS1, GLIDR, MIR210HG, SOX2-OT. The examined lncRNAs influence the phenomenon of tumor resistance via their downstream target genes through a variety of processes: multi-drug resistance, epithelial-mesenchymal transition, autophagy, cell proliferation and viability, and DNA repair. A comparison of in vivo and in vitro expression identified differences in the levels of potential lncRNA targets, with the highest discrepancies detected for the MDR1, LRP1, BCRP and MRP1 genes. Co-expression analyses confirmed the following interrelations: MALAT1-TYMS, MALAT1-MRP5, H19-ZEB1, CASC2-VIM, CASC2-N-CAD; they additionally suggest the possibility of MALAT1-BCRP, MALAT1-mTOR and TUSC7-PTEN interconnections in glioblastoma. Although our results clearly demonstrate that the artificial ex vivo microenvironment changes the profile of lncRNAs related to tumor resistance, it is difficult to anticipate the final phenotypic effect, since this phenomenon is a complex one that involves a network of molecular interactions underlying a variety of cellular processes.
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37
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Zhu T, Li Y, Pang Y, Han Y, Li J, Wang Z, Liu X, Li H, Hua Y, Jiang H, Teng H, Quan J, Liu Y, Geng M, Li M, Hui F, Liu J, Qiu Q, Li Q, Ren Y. Chromosome-level genome assembly of Lethenteron reissneri provides insights into lamprey evolution. Mol Ecol Resour 2020; 21:448-463. [PMID: 33053263 DOI: 10.1111/1755-0998.13279] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 11/29/2022]
Abstract
The reissner lamprey Lethenteron reissneri, belonging to the class Cyclostomata, serves as a bridge between invertebrates and jawed vertebrates, and is considered the sister group of jawed vertebrates. However, despite this evolutionary significance, the genetic mechanisms underlying the adaptive evolution of the lamprey lineage remain unclear. Here, we assembled a 1.06 Gb chromosome-level draft genome of L. reissneri, with 72 chromosomes (ranging in length from 4.5 Mb to 25.9 Mb) and a scaffold N50 length of 13.23 Mb. Genome quality comparisons revealed that the reissner lamprey genome has higher completeness and contiguity than the previously published sea lamprey and Japanese lamprey genomes. Moreover, reissner lamprey, sea lamprey, and Japanese lamprey species share similar transposable element profiles and Hox gene cluster compositions, suggesting that a burst of transposable element activity and whole genome duplication occurred before their divergence. Additionally, the Lip gene copy numbers, which have been studied for their functions in the host defence system, were found to be expanded uniquely in lamprey lineages, suggesting key roles for these genes in lamprey evolution and adaptation. We also identified two neural-related genes, Nrn1 and Unc13a, with copy number expansions in jawed vertebrates, which may be functionally relevant to the origin of lamprey brains. Hence, this study not only provides the first chromosome-level reference genome for Cyclostomata, but also highlights features of the unique biology and adaptive evolution of the lamprey lineage.
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Affiliation(s)
- Ting Zhu
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Yongxin Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Yue Pang
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Yinglun Han
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Jun Li
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Zhongkai Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Xin Liu
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Haorong Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Yishan Hua
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Hui Jiang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Hongming Teng
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Jian Quan
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Yu Liu
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Ming Geng
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Meiao Li
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Fan Hui
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Jinzhao Liu
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Qiang Qiu
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Qingwei Li
- College of Life Science, Liaoning Normal University, Dalian, China.,Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Yandong Ren
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
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Wallach AI, Tremblay M, Kister I. Advances in the Treatment of Neuromyelitis Optica Spectrum Disorder. Neurol Clin 2020; 39:35-49. [PMID: 33223088 DOI: 10.1016/j.ncl.2020.09.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Neuromyelitis optica spectrum disorder (NMOSD) is a rare, relapsing-remitting neuroinflammatory disorder of the central nervous system. Advances in the understanding of NMOSD pathogenesis and identification of the NMO-specific pathogenic anti-AQP4 autoantibody have led to the development of highly effective disease-modifying strategies. Five placebo-controlled, randomized trials for NMOSD have been successfully completed as of 2020. These trials support the efficacy of rituximab and tocilizumab and led to the FDA approval of eculizumab, satralizumab and inebilizumab for NMOSD. Our review provides an update on these evidence-based disease-modifying therapies and discussed the treatment of acute relapses in NMOSD.
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Affiliation(s)
- Asya Izraelit Wallach
- Alfiero and Lucia Palestroni MS Comprehensive Care Center, Holy Name Medical Center, 718 Teaneck Road, Teaneck, NJ 07666, USA.
| | - Matthew Tremblay
- MS Comprehensive Care Center, RWJ Barnabas Health, 200 South Orange Avenue, Suite 124-A, Livingston, NJ 07039, USA
| | - Ilya Kister
- Department of Neurology, Comprehensive MS Center, NYU Grossman School of Medicine, 240 East 38th Street, New York, NY 10016, USA
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Yu L, Tasaki S, Schneider JA, Arfanakis K, Duong DM, Wingo AP, Wingo TS, Kearns N, Thatcher GRJ, Seyfried NT, Levey AI, De Jager PL, Bennett DA. Cortical Proteins Associated With Cognitive Resilience in Community-Dwelling Older Persons. JAMA Psychiatry 2020; 77:1172-1180. [PMID: 32609320 PMCID: PMC7330835 DOI: 10.1001/jamapsychiatry.2020.1807] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 04/22/2020] [Indexed: 12/15/2022]
Abstract
Importance Identifying genes and proteins for cognitive resilience (ie, targets that may be associated with slowing or preventing cognitive decline regardless of the presence, number, or combination of common neuropathologic conditions) provides a complementary approach to developing novel therapeutics for the treatment and prevention of Alzheimer disease and related dementias. Objective To identify proteins associated with cognitive resilience via a proteome-wide association study of the human dorsolateral prefrontal cortex. Design, Setting, and Participants This study used data from 391 community-dwelling older persons who participated in the Religious Orders Study and the Rush Memory and Aging Project. The Religious Orders Study began enrollment January 1, 1994, and the Rush Memory and Aging Project began enrollment September 1, 1997, and data were collected and analyzed through October 23, 2019. Exposures Participants had undergone annual detailed clinical examinations, postmortem evaluations, and tandem mass tag proteomics analyses. Main Outcomes and Measures The outcome of cognitive resilience was defined as a longitudinal change in cognition over time after controlling for common age-related neuropathologic indices, including Alzheimer disease, Lewy bodies, transactive response DNA-binding protein 43, hippocampal sclerosis, infarcts, and vessel diseases. More than 8000 high abundance proteins were quantified from frozen dorsolateral prefrontal cortex tissue using tandem mass tag and liquid chromatography-mass spectrometry. Results There were 391 participants (273 women); their mean (SD) age was 79.7 (6.7) years at baseline and 89.2 (6.5) years at death. Eight cortical proteins were identified in association with cognitive resilience: a higher level of NRN1 (estimate, 0.140; SE, 0.024; P = 7.35 × 10-9), ACTN4 (estimate, 0.321; SE, 0.065; P = 9.94 × 10-7), EPHX4 (estimate, 0.198; SE, 0.042; P = 2.13 × 10-6), RPH3A (estimate, 0.148; SE, 0.031; P = 2.58 × 10-6), SGTB (estimate, 0.211; SE, 0.045; P = 3.28 × 10-6), CPLX1 (estimate, 0.136; SE, 0.029; P = 4.06 × 10-6), and SH3GL1 (estimate, 0.179; SE, 0.039; P = 4.21 × 10-6) and a lower level of UBA1 (estimate, -0.366; SE, 0.076; P = 1.43 × 10-6) were associated with greater resilience. Conclusions and Relevance These protein signals may represent novel targets for the maintenance of cognition in old age.
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Affiliation(s)
- Lei Yu
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois
- Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
| | - Shinya Tasaki
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois
- Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
| | - Julie A. Schneider
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois
- Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
- Department of Pathology, Rush University Medical Center, Chicago, Illinois
| | - Konstantinos Arfanakis
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois
- Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, Chicago, Illinois
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago
| | - Duc M. Duong
- Department of Biochemistry, Emory University, Atlanta, Georgia
| | - Aliza P. Wingo
- Division of Mental Health, Atlanta Veterans Affairs Medical Center, Decatur, Georgia
- Department of Psychiatry, Emory University School of Medicine, Atlanta, Georgia
| | - Thomas S. Wingo
- Department of Neurology, Emory University, Atlanta, Georgia
- Department of Human Genetics, Emory University, Atlanta, Georgia
| | - Nicola Kearns
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois
| | - Gregory R. J. Thatcher
- Department of Pharmaceutical Sciences, University of Illinois College of Pharmacy, Chicago
| | | | - Allan I. Levey
- Department of Neurology, Emory University, Atlanta, Georgia
| | - Philip L. De Jager
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, New York
- Cell Circuits Program, Broad Institute, Cambridge, Massachusetts
| | - David A. Bennett
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois
- Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
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Sah SK, Rai N, Sah MK, Timalsena M, Oli G, Katuwal N, Rajbhandari H. Comorbid depression and its associated factors in patients with epilepsy treated with single and multiple drug therapy: A cross-sectional study from Himalayan country. Epilepsy Behav 2020; 112:107455. [PMID: 33181908 DOI: 10.1016/j.yebeh.2020.107455] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Depressive disorder is the most common psychiatric comorbidity in individuals with epilepsy (IWE) and is associated with a significant negative impact with increased morbidity and mortality rate. However, the magnitude of comorbid depression in such patients in the Nepalese setting is still poorly understood. Therefore, we aimed to determine the magnitude of depression in individuals diagnosed as having epilepsy and further examine the influencing factors associated with it. METHODS This cross-sectional observational study was conducted from April 2018 to September 2018 at Nepal Epilepsy Center, Lazimpat, Kathmandu, Nepal. One hundred and forty-two eligible subjects were enrolled for analysis. The core outcome variable evaluated in this study was depressive disorder, whereas age, gender, types of epilepsy, frequency of seizures, duration of epilepsy, and drug use were evaluated as covariates. The mean ages of the patients were 31.45 ± 12.05 years, and 87 (61.3%) were male. The prevalence of depression was found to be 31% (95% confidence interval [CI]; lower limit: 23.39% and upper limit: 38.60%), with majority subjects had a mild type of depression, and 63.63% (95% CI; lower limit: 55.05% and upper limit: 70.94%). The frequency of drug use remained a significant predictor for depression in individuals with epilepsy (P = 0.002), and the odds of having depression in individuals receiving polytherapy were 3.82 higher than in those receiving monotherapy (95%: 1.61-9.05, P = 0.002). CONCLUSION Our study indicated a high rate of depression in a substantial number of IWE in the Nepalese setting. Polytherapy emerged as an independent predictor for depression. The high coexistence of depression in this vulnerable population and an increased risk for comorbid in polytherapy necessitate incorporating depression screening and proper treatment into the existing epilepsy program. Furthermore, revising treatment guidelines on comorbid depression to reduce polytherapy and encouraging health education on epilepsy to reduce stigma may also be warranted.
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Affiliation(s)
- Shiv Kumar Sah
- Purbanchal University, Little Buddha College of Health Science, Minbhawan, Kathmandu, Nepal; Gastro and Liver Foundation, Nepal.
| | - Nabin Rai
- Purbanchal University, Little Buddha College of Health Science, Minbhawan, Kathmandu, Nepal
| | - Mukesh Kumar Sah
- Purbanchal University, Little Buddha College of Health Science, Minbhawan, Kathmandu, Nepal
| | - Milan Timalsena
- Purbanchal University, Little Buddha College of Health Science, Minbhawan, Kathmandu, Nepal
| | - Gayatri Oli
- Purbanchal University, Little Buddha College of Health Science, Minbhawan, Kathmandu, Nepal
| | - Nagendra Katuwal
- Nepal Army Institute for Health Sciences (NAIHS), Sanobharyang, Kathmandu, Nepal
| | - Hemav Rajbhandari
- Kathmandu Model Hospital, Nepal Epilepsy Center, Lazimpat, Kathmandu, Nepal
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Abstract
Several hypotheses have been put forth over time to explain how consciousness can be so rapidly lost, and then spontaneously regained, following mechanical head trauma. The knockout punch in boxing is a relatively homogenous form of traumatic brain injury and can thus be used to test the predictions of these hypotheses. While none of the hypotheses put forth can be considered fully verified, pore formation following stretching of the axonal cell membrane, mechanoporation, is a strong contender. We here argue that the theoretical foundation of mechanoporation can be strengthened by a comparison with the experimental method electroporation.
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Affiliation(s)
- Anders Hånell
- Section of Neurosurgery, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Elham Rostami
- Section of Neurosurgery, Department of Neuroscience, Uppsala University, Uppsala, Sweden
- Department of Neuroscience, Karolinska Institutet (KI), Stockholm, Sweden
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Jazayeri MH, Barzaman K, Nedaeinia R, Aghaie T, Motallebnezhad M. Human placental extract attenuates neurological symptoms in the experimental autoimmune encephalomyelitis model of multiple sclerosis-a putative approach in MS disease? AUTOIMMUNITY HIGHLIGHTS 2020; 11:14. [PMID: 33012290 PMCID: PMC7534169 DOI: 10.1186/s13317-020-00137-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 08/11/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND Different studies have demonstrated the anti-inflammatory effects of human placental extract both in vivo and in vitro. Considering the chronic inflammatory nature of multiple sclerosis (MS) disease, we examined whether or not the administration of human placental extract is able to attenuate the neurological symptoms detected in experimental autoimmune encephalomyelitis (EAE) model of MS. METHODS The injected myelin oligodendrocyte glycoprotein (MOG) induced EAE in mice, and treatment began from day 4 post-injection by intraperitoneal administration of 0.2 mg/kg human placental extract, repeated every other day up to day 31 post-injection. At the end of the treatment, luxol fast blue (LBS) staining and hematoxylin and eosin (H&E) staining were performed to evaluate the demyelination of neurons and inflammatory responses, respectively. Further assessed were the serum concentrations of IL-23 and IL-27. RESULTS The administration of human placental extract was able to significantly reduce the mean clinical score in EAE mice, decrease the pro-inflammatory process and attenuate neural demyelination. Moreover, while the serum concentration of IL-23 was significantly diminished in the EAE mice receiving human placental extract compared to the non-treated EAE group, IL-27 concentration was significantly increased. CONCLUSIONS Our findings demonstrated the administration of human placental extract could significantly attenuate the neurological symptoms in the EAE model of MS in part through modulating the serum levels of IL-23 and IL-27 and enhancing neuroprotection and myelin repair.
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Affiliation(s)
- Mir Hadi Jazayeri
- Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Shahid Hemmat Highway, P.O Box: 14665-354, Tehran, 1449614535, Iran. .,Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran.
| | - Khadijeh Barzaman
- Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Shahid Hemmat Highway, P.O Box: 14665-354, Tehran, 1449614535, Iran.,Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Reza Nedaeinia
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Tayebe Aghaie
- Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Shahid Hemmat Highway, P.O Box: 14665-354, Tehran, 1449614535, Iran
| | - Morteza Motallebnezhad
- Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Shahid Hemmat Highway, P.O Box: 14665-354, Tehran, 1449614535, Iran.,Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
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43
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Cox CD, Bavi N, Martinac B. Biophysical Principles of Ion-Channel-Mediated Mechanosensory Transduction. Cell Rep 2020; 29:1-12. [PMID: 31577940 DOI: 10.1016/j.celrep.2019.08.075] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 06/09/2019] [Accepted: 08/22/2019] [Indexed: 01/12/2023] Open
Abstract
Recent rapid progress in the field of mechanobiology has been driven by novel emerging tools and methodologies and growing interest from different scientific disciplines. Specific progress has been made toward understanding how cell mechanics is linked to intracellular signaling and the regulation of gene expression in response to a variety of mechanical stimuli. There is a direct link between the mechanoreceptors at the cell surface and intracellular biochemical signaling, which in turn controls downstream effector molecules. Among the mechanoreceptors in the cell membrane, mechanosensitive (MS) ion channels are essential for the ultra-rapid (millisecond) transduction of mechanical stimuli into biologically relevant signals. The three decades of research on mechanosensitive channels resulted in the formulation of two basic principles of mechanosensitive channel gating: force-from-lipids and force-from-filament. In this review, we revisit the biophysical principles that underlie the innate force-sensing ability of mechanosensitive channels as contributors to the force-dependent evolution of life forms.
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Affiliation(s)
- Charles D Cox
- Victor Chang Cardiac Research Institute, Lowy Packer Building, Darlinghurst, NSW 2010, Australia; St. Vincent's Clinical School, University of New South Wales, Darlinghurst, NSW 2010, Australia
| | - Navid Bavi
- Institute for Biophysical Dynamics, University of Chicago, Chicago, IL 60637, USA
| | - Boris Martinac
- Victor Chang Cardiac Research Institute, Lowy Packer Building, Darlinghurst, NSW 2010, Australia; St. Vincent's Clinical School, University of New South Wales, Darlinghurst, NSW 2010, Australia.
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44
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Mehta R, Giri S, Mallick BN. REM sleep loss-induced elevated noradrenaline could predispose an individual to psychosomatic disorders: a review focused on proposal for prediction, prevention, and personalized treatment. EPMA J 2020; 11:529-549. [PMID: 33240449 DOI: 10.1007/s13167-020-00222-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 07/27/2020] [Indexed: 12/19/2022]
Abstract
Historically and traditionally, it is known that sleep helps in maintaining healthy living. Its duration varies not only among individuals but also in the same individual depending on circumstances, suggesting it is a dynamic and personalized physiological process. It has been divided into rapid eye movement sleep (REMS) and non-REMS (NREMS). The former is unique that adult humans spend the least time in this stage, when although one is physically asleep, the brain behaves as if awake, the dream state. As NREMS is a pre-requisite for appearance of REMS, the latter can be considered a predictive readout of sleep quality and health. It plays a protective role against oxidative, stressful, and psychopathological insults. Several modern lifestyle activities compromise quality and quantity of sleep (including REMS) affecting fundamental physiological and psychopathosomatic processes in a personalized manner. REMS loss-induced elevated brain noradrenaline (NA) causes many associated symptoms, which are ameliorated by preventing NA action. Therefore, we propose that awareness about personalized sleep hygiene (including REMS) and maintaining optimum brain NA level should be of paramount significance for leading physical and mental well-being as well as healthy living. As sleep is a dynamic, multifactorial, homeostatically regulated process, for healthy living, we recommend addressing and treating sleep dysfunctions in a personalized manner by the health professionals, caregivers, family, and other supporting members in the society. We also recommend that maintaining sleep profile, optimum level of NA, and/or prevention of elevation of NA or its action in the brain must be seriously considered for ameliorating lifestyle and REMS disturbance-associated dysfunctions.
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Affiliation(s)
- Rachna Mehta
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110 067 India.,Present Address: Amity Institute of Neuropsychology & Neurosciences, Amity University, Noida, India
| | - Shatrunjai Giri
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110 067 India
| | - Birendra N Mallick
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110 067 India
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The impact of altered mechanobiology on aortic valve pathophysiology. Arch Biochem Biophys 2020; 691:108463. [PMID: 32590066 DOI: 10.1016/j.abb.2020.108463] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/29/2020] [Accepted: 06/07/2020] [Indexed: 01/28/2023]
Abstract
Calcific aortic valve disease (CAVD) is the most prevalent valvulopathy worldwide. Until recently, CAVD was viewed as a passive, degenerative process and an inevitable consequence of aging. Recent improvements in disease modeling, imaging, and analysis have greatly enhanced our understanding of CAVD. The aortic valve and its constituent cells are subjected to extreme changes in mechanical forces, so it follows that any changes in the underlying mechanobiology of the valve and its cells would have dire effects on function. Further, the mechanobiology of the aortic valve is intimately intertwined with numerous molecular pathways, with signal transduction between these aspects afforded by the dynamic plasma membrane. Changes to the plasma membrane itself, its regulation of the extracellular matrix, or the relay of signals into or out of the cell would negatively impact cell and tissue function. PURPOSE OF REVIEW This review seeks to detail past and current published reports related to the mechanobiology of the aortic valve with a special emphasis on the implications of altered mechanobiology in the context of calcific aortic valve disease. RECENT FINDINGS Investigations characterizing membrane composition and dynamics have provided new insights into the earliest stages of calcific aortic valve disease. Recent studies have suggested that the activation or suppression of key pathways contribute to disease progression but may also offer therapeutic targets. SUMMARY This review highlights the critical involvement of mechanobiology and membrane dynamics in normal aortic valve physiology as well as valve pathology.
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Shen Y, Pan Y, Guo S, Sun L, Zhang C, Wang L. The roles of mechanosensitive ion channels and associated downstream MAPK signaling pathways in PDLC mechanotransduction. Mol Med Rep 2020; 21:2113-2122. [PMID: 32323761 PMCID: PMC7115221 DOI: 10.3892/mmr.2020.11006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 02/05/2020] [Indexed: 12/30/2022] Open
Abstract
The present study aimed to investigate whether the cytoskeleton, the Piezo1 ion channel and the transient receptor potential cation channel subfamily V member 4 (TRPV4) ion channel are equally functional in the mechanotransduction of periodontal ligament cells (PDLCs) and to reveal the interplay of these mechanically sensitive ion channels (MSCs). Human PDLCs (hPDLCs) were pretreated with cytochalasin D (the inhibitor of actin polymerization), GsMTx4 (the antagonist of Piezo1) and GSK205 (the antagonist of TRPV4), and then subjected to periodic mechanical loading. The expression levels of macrophage colony stimulating factor (M-CSF), receptor activator of NF-κB ligand (RANKL) and cyclooxygenase-2 (COX2) in hPDLCs were detected via western blotting. Osteoblast mineralization induction capacity of the hPDLCs was also studied and the mitogen-activated protein kinase (MAPK) expression profile was determined via protein microarray. The expression of Piezo1 and TRPV4 in the PDLCs was significantly increased at 8 h after loading. These differences in expression were accompanied by increased expression of M-CSF, RANKL and COX2. Compared with the control group, key PDLC biomarkers were suppressed after mechanical loading following treatment with the inhibitors of Piezo1 (GsMTx4) and TRPV4 (GSK205). The phosphorylated-MAPK protein array showed differential biomarker profiles among all groups. The present study suggested that both MSCs and the cytoskeleton participated as mechanical sensors, and did so independently in hPDLC mechanotransduction. Furthermore, the Piezo1 ion channel may transmit mechanical signals via the ERK signaling pathway; however, the TRPV4 channel may function via alternative signaling pathways.
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Affiliation(s)
- Yun Shen
- Institute of Stomatology, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yongchu Pan
- Institute of Stomatology, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Shuyu Guo
- Institute of Stomatology, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Lian Sun
- Institute of Stomatology, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Chi Zhang
- Institute of Stomatology, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Lin Wang
- Institute of Stomatology, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Martinez B, Peplow PV. Protective effects of pharmacological therapies in animal models of multiple sclerosis: a review of studies 2014-2019. Neural Regen Res 2020; 15:1220-1234. [PMID: 31960801 PMCID: PMC7047782 DOI: 10.4103/1673-5374.272572] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system. The disability caused by inflammatory demyelination clinically dominates the early stages of relapsing-remitting MS and is reversible. Once there is considerable loss of axons, MS patients enter a secondary progressive stage. Disease-modifying drugs currently in use for MS suppress the immune system and reduce relapse rates but are not effective in the progressive stage. Various animal models of MS (mostly mouse and rat) have been established and proved useful in studying the disease process and response to therapy. The experimental autoimmune encephalomyelitis animal studies reviewed here showed that a chronic progressive disease can be induced by immunization with appropriate amounts of myelin oligodendrocyte glycoprotein together with mycobacterium tuberculosis and pertussis toxin in Freund's adjuvant. The clinical manifestations of autoimmune encephalomyelitis disease were prevented or reduced by treatment with certain pharmacological agents given prior to, at, or after peak disease, and the agents had protective effects as shown by inhibiting demyelination and damage to neurons, axons and oligodendrocytes. In the cuprizone-induced toxicity animal studies, the pharmacological agents tested were able to promote remyelination and increase the number of oligodendrocytes when administered therapeutically or prophylactically. A monoclonal IgM antibody protected axons in the spinal cord and preserved motor function in animals inoculated with Theiler's murine encephalomyelitis virus. In all these studies the pharmacological agents were administered singly. A combination therapy may be more effective, especially using agents that target neuroinflammation and neurodegeneration, as they may exert synergistic actions.
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Affiliation(s)
- Bridget Martinez
- Physical Chemistry and Applied Spectroscopy, Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, USA; Department of Medicine, St. Georges University School of Medicine, True Blue, Grenada
| | - Philip V Peplow
- Department of Anatomy, University of Otago, Dunedin, New Zealand
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Engidaw NA, Bacha L, Kenea A. Prevalence of depression and associated factors among epileptic patients at Ilu Ababore zone hospitals, South West Ethiopia, 2017: a cross‑sectional study. Ann Gen Psychiatry 2020; 19:19. [PMID: 32174994 PMCID: PMC7065310 DOI: 10.1186/s12991-020-00268-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/23/2020] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Depression is one of the most common and overwhelming mental disorder in patients with epilepsy. Despite its high prevalence, depression continues to be under-recognized and undertreated. This study aimed to assess the prevalence of depression and its associated factors among epileptic patients attending the outpatient department of Ilu Ababore zone hospitals, Southwest Ethiopia, 2017. METHODS Institution-based cross-sectional study was carried out among 402 individual with epilepsy. The participants were selected using systematic random sampling technique. Depression was measured using Beck's Depression Inventory II. Oslo 3 Social Support Scale was used to assess social support. Perceived Stress Scale was used to assess the stress level of epileptic patients. The data were entered into Epi Info version 7 and analyzed by the SPSS version 20 software. We computed bivariate and multivariate binary logistic regressions to assess factors associated with depression. Statistical significance was declared at p-value < 0.05. RESULTS A total of 402 study participants were interviewed with a response rate of 96.2%. The prevalence of depression was found to be 48.1%. In the final multivariate analysis, educational status [unable to read and write (AOR = 4.01,95% CI = 3.82, 8.28), primary (AOR = 3.43, 95% CI = 3.12,9.29), secondary (AOR = 2.01, 95% CI = 1.89,7.24)], high perceived stress (AOR = 3.21, 95% CI = 2.70, 8.41), poor social support (AOR = 2.04, 95% CI = 1.42, 2.78), onset of illness < 6 year (AOR = 2.40, 95%CI = 2.10,7.91), seizure frequency of [1-11 per year (AOR = 2.34, 95% = 1.41, 4.36), ≥ 12/year (AOR = 3.49, 95% CI = 3.43, 6.40)], and polytherapy (AOR = 2.73, 95%CI = 2.52, 7.14) were independent predictors of depression among epileptic patients at p-value < 0.05. CONCLUSION AND RECOMMENDATION Overall, the prevalence of depression was found to be high. Having lower educational status, early onset of illness, poor social support, high perceived stress, high seizure frequency, and polytherapy were factors statistically associated with depression. Clinicians need to give emphasis to epileptic patients with high perceived stress, low educational status, and poor social support. An early depression-focused regular screening for epileptic patient should be carried out by trained health professionals. Linkage with mental health service providers also needs to be considered.
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Affiliation(s)
- Nigus Alemnew Engidaw
- 1College of Medicine and Health Sciences, Debre Berhan University, Debre Berhan, Ethiopia
| | - Lemi Bacha
- Department of Psychiatry, Faculty of Public Health and Medical Science, Mettu University, Mettu, Ethiopia
| | - Adamu Kenea
- Department of Psychiatry, Faculty of Public Health and Medical Science, Mettu University, Mettu, Ethiopia
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49
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Cohen AE, Shi Z. Do Cell Membranes Flow Like Honey or Jiggle Like Jello? Bioessays 2019; 42:e1900142. [DOI: 10.1002/bies.201900142] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 10/31/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Adam E. Cohen
- Departments of Chemistry and Chemical Biology and PhysicsHarvard University Cambridge MA USA
- Howard Hughes Medical Institute Chevy Chase MD USA
| | - Zheng Shi
- Departments of Chemistry and Chemical Biology and PhysicsHarvard University Cambridge MA USA
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50
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Pacheco JM, Hines-Lanham A, Stratton C, Mehos CJ, McCurdy KE, Pinkowski NJ, Zhang H, Shuttleworth CW, Morton RA. Spreading Depolarizations Occur in Mild Traumatic Brain Injuries and Are Associated with Postinjury Behavior. eNeuro 2019; 6:ENEURO.0070-19.2019. [PMID: 31748237 PMCID: PMC6893232 DOI: 10.1523/eneuro.0070-19.2019] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 11/06/2019] [Accepted: 11/11/2019] [Indexed: 01/20/2023] Open
Abstract
Millions of people suffer mild traumatic brain injuries (mTBIs) every year, and there is growing evidence that repeated injuries can result in long-term pathology. The acute symptoms of these injuries may or may not include the loss of consciousness but do include disorientation, confusion, and/or the inability to concentrate. Most of these acute symptoms spontaneously resolve within a few hours or days. However, the underlying physiological and cellular mechanisms remain unclear. Spreading depolarizations (SDs) are known to occur in rodents and humans following moderate and severe TBIs, and SDs have long been hypothesized to occur in more mild injuries. Using a closed skull impact model, we investigated the presence of SDs immediately following a mTBI. Animals remained motionless for multiple minutes following an impact and once recovered had fewer episodes of movement. We recorded the defining electrophysiological properties of SDs, including the large extracellular field potential shifts and suppression of high-frequency cortical activity. Impact-induced SDs were also associated with a propagating wave of reduced cerebral blood flow (CBF). In the wake of the SD, there was a prolonged period of reduced CBF that recovered in approximately 90 min. Similar to SDs in more severe injuries, the impact-induced SDs could be blocked with ketamine. Interestingly, impacts at a slower velocity did not produce the prolonged immobility and did not initiate SDs. Our data suggest that SDs play a significant role in mTBIs and SDs may contribute to the acute symptoms of mTBIs.
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Affiliation(s)
- Johann M Pacheco
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Ashlyn Hines-Lanham
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Claire Stratton
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Carissa J Mehos
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Kathryn E McCurdy
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Natalie J Pinkowski
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Haikun Zhang
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - C William Shuttleworth
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Russell A Morton
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131
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