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Soto I, McManus R, Navarrete W, Kasanga EA, Doshier K, Nejtek VA, Salvatore MF. Aging accelerates locomotor decline in PINK1 knockout rats in association with decreased nigral, but not striatal, dopamine and tyrosine hydroxylase expression. Exp Neurol 2024; 376:114771. [PMID: 38580154 DOI: 10.1016/j.expneurol.2024.114771] [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: 02/01/2024] [Revised: 03/15/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
Parkinson's disease (PD) rodent models provide insight into the relationship between nigrostriatal dopamine (DA) signaling and locomotor function. Although toxin-based rat models produce frank nigrostriatal neuron loss and eventual motor decline characteristic of PD, the rapid nature of neuronal loss may not adequately translate premotor traits, such as cognitive decline. Unfortunately, rodent genetic PD models, like the Pink1 knockout (KO) rat, often fail to replicate the differential severity of striatal DA and tyrosine hydroxylase (TH) loss, and a bradykinetic phenotype, reminiscent of human PD. To elucidate this inconsistency, we evaluated aging as a progression factor in the timing of motor and non-motor cognitive impairments. Male PINK1 KO and age-matched wild type (WT) rats were evaluated in a longitudinal study from 3 to 16 months old in one cohort, and in a cross-sectional study of young adult (6-7 months) and aged (18-19 months) in another cohort. Young adult PINK1 KO rats exhibited hyperkinetic behavior associated with elevated DA and TH in the substantia nigra (SN), which decreased therein, but not striatum, in the aged KO rats. Additionally, norepinephrine levels decreased in aged KO rats in the prefrontal cortex (PFC), paired with a higher DA levels in young and aged KO. Although a younger age of onset characterizes familial forms of PD, our results underscore the critical need to consider age-related factors. Moreover, the results indicate that compensatory mechanisms may exist to preserve locomotor function, evidenced by increased DA in the SN early in the lifespan, in response to deficient PINK1 function, which declines with aging and the onset of motor decline.
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Affiliation(s)
- Isabel Soto
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America
| | - Robert McManus
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America
| | - Walter Navarrete
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America
| | - Ella A Kasanga
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America
| | - Kirby Doshier
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America
| | - Vicki A Nejtek
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America
| | - Michael F Salvatore
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, United States of America.
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Soto I, McManus R, Navarrete-Barahona W, Kasanga EA, Doshier K, Nejtek VA, Salvatore MF. Aging hastens locomotor decline in PINK1 knockout rats in association with decreased nigral, but not striatal, dopamine and tyrosine hydroxylase expression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.01.578317. [PMID: 38352365 PMCID: PMC10862808 DOI: 10.1101/2024.02.01.578317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Parkinson's disease (PD) rodent models provide insight into the relationship between nigrostriatal dopamine (DA) signaling and locomotor function. Although toxin-based rat models produce frank nigrostriatal neuron loss and eventual motor decline characteristic of PD, the rapid nature of neuronal loss may not adequately translate premotor traits, such as cognitive decline. Unfortunately, rodent genetic PD models, like the Pink1 knockout (KO) rat, often fail to replicate the differential severity of striatal DA and tyrosine hydroxylase (TH) loss, and a bradykinetic phenotype, reminiscent of human PD. To elucidate this inconsistency, we evaluated aging as a progression factor in the timing of motor and non-motor cognitive impairments. Male PINK1 KO and age-matched wild type (WT) rats were evaluated in a longitudinal study from 3 to 16 months old in one cohort, and in a cross-sectional study of young adult (6-7 months) and aged (18-19 months) in another cohort. Young adult PINK1 KO rats exhibited hyperkinetic behavior associated with elevated DA and TH in the substantia nigra (SN), which decreased therein, but not striatum, in the aged KO rats. Additionally, norepinephrine levels decreased in aged KO rats in the prefrontal cortex (PFC), paired with a higher DA content in young and aged KO. Although a younger age of onset characterizes familial forms of PD, our results underscore the critical need to consider age-related factors. Moreover, the results indicate that compensatory mechanisms may exist to preserve locomotor function, evidenced by increased DA in the SN early in the lifespan, in response to deficient PINK1 function, which declines with aging and the onset of motor impairment.
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Pinizzotto CC, Dreyer KM, Aje OA, Caffrey RM, Madhira K, Kritzer MF. Spontaneous Object Exploration in a Recessive Gene Knockout Model of Parkinson's Disease: Development and Progression of Object Recognition Memory Deficits in Male Pink1-/- Rats. Front Behav Neurosci 2022; 16:951268. [PMID: 36560930 PMCID: PMC9763898 DOI: 10.3389/fnbeh.2022.951268] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/20/2022] [Indexed: 12/12/2022] Open
Abstract
Cognitive impairments appear at or before motor signs in about one third of patients with Parkinson's disease (PD) and have a cumulative prevalence of roughly 80% overall. These deficits exact an unrelenting toll on patients' quality and activities of daily life due in part to a lack of available treatments to ameliorate them. This study used three well-validated novel object recognition-based paradigms to explore the suitability of rats with knockout of the PTEN-induced putative kinase1 gene (Pink1) for investigating factors that induce cognitive decline in PD and for testing new ways to mitigate them. Longitudinal testing of rats from 3-9 months of age revealed significant impairments in male Pink1-/- rats compared to wild type controls in Novel Object Recognition, Novel Object Location and Object-in-Place tasks. Task-specific differences in the progression of object discrimination/memory deficits across age were also seen. Finally, testing using an elevated plus maze, a tapered balance beam and a grip strength gauge showed that in all cases recognition memory deficits preceded potentially confounding impacts of gene knockout on affect or motor function. Taken together, these findings suggest that knockout of the Pink1 gene negatively impacts the brain circuits and/or neurochemical systems that support performance in object recognition tasks. Further investigations using Pink1-/- rats and object recognition memory tasks should provide new insights into the neural underpinnings of the visual recognition memory and visuospatial information processing deficits that are often seen in PD patients and accelerate the pace of discovery of better ways to treat them.
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Affiliation(s)
- Claudia C. Pinizzotto
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, United States,*Correspondence: Claudia C. Pinizzotto,
| | - Katherine M. Dreyer
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, United States,InSTAR Program, Ward Melville High School, East Setauket, NY, United States
| | - Oluwagbohunmi A. Aje
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, United States
| | - Ryan M. Caffrey
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, United States,Master’s Program in Neuroscience, Stony Brook University, Stony Brook, NY, United States
| | - Keertana Madhira
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, United States,Hauppauge High School Science Research Program, Hauppauge High School, Hauppauge, NY, United States
| | - Mary F. Kritzer
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, United States
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Wang Y, Zhang Z, Li B, He B, Li L, Nice EC, Zhang W, Xu J. New Insights into the Gut Microbiota in Neurodegenerative Diseases from the Perspective of Redox Homeostasis. Antioxidants (Basel) 2022; 11:2287. [PMID: 36421473 PMCID: PMC9687622 DOI: 10.3390/antiox11112287] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/08/2022] [Accepted: 11/16/2022] [Indexed: 08/27/2023] Open
Abstract
An imbalance between oxidants and antioxidants in the body can lead to oxidative stress, which is one of the major causes of neurodegenerative diseases. The gut microbiota contains trillions of beneficial bacteria that play an important role in maintaining redox homeostasis. In the last decade, the microbiota-gut-brain axis has emerged as a new field that has revolutionized the study of the pathology, diagnosis, and treatment of neurodegenerative diseases. Indeed, a growing number of studies have found that communication between the brain and the gut microbiota can be accomplished through the endocrine, immune, and nervous systems. Importantly, dysregulation of the gut microbiota has been strongly associated with the development of oxidative stress-mediated neurodegenerative diseases. Therefore, a deeper understanding of the relationship between the gut microbiota and redox homeostasis will help explain the pathogenesis of neurodegenerative diseases from a new perspective and provide a theoretical basis for proposing new therapeutic strategies for neurodegenerative diseases. In this review, we will describe the role of oxidative stress and the gut microbiota in neurodegenerative diseases and the underlying mechanisms by which the gut microbiota affects redox homeostasis in the brain, leading to neurodegenerative diseases. In addition, we will discuss the potential applications of maintaining redox homeostasis by modulating the gut microbiota to treat neurodegenerative diseases, which could open the door for new therapeutic approaches to combat neurodegenerative diseases.
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Affiliation(s)
- Yu Wang
- West China School of Basic Medical Sciences & Forensic Medicine, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Zhe Zhang
- West China School of Basic Medical Sciences & Forensic Medicine, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Bowen Li
- West China School of Basic Medical Sciences & Forensic Medicine, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Bo He
- West China School of Basic Medical Sciences & Forensic Medicine, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Lei Li
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Edouard C. Nice
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Wei Zhang
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu 610041, China
- Mental Health Center and Psychiatric Laboratory, the State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu 610000, China
| | - Jia Xu
- School of Medicine, Ningbo University, Ningbo 315211, China
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Wang Y, Chen R, Yang Z, Wen Q, Cao X, Zhao N, Yan J. Protective Effects of Polysaccharides in Neurodegenerative Diseases. Front Aging Neurosci 2022; 14:917629. [PMID: 35860666 PMCID: PMC9289469 DOI: 10.3389/fnagi.2022.917629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/02/2022] [Indexed: 12/19/2022] Open
Abstract
Neurodegenerative diseases (NDs) are characterized by progressive degeneration and necrosis of neurons, including Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease and others. There are no existing therapies that correct the progression of these diseases, and current therapies provide merely symptomatic relief. The use of polysaccharides has received significant attention due to extensive biological activities and application prospects. Previous studies suggest that the polysaccharides as a candidate participate in neuronal protection and protect against NDs. In this review, we demonstrate that various polysaccharides mediate NDs, and share several common mechanisms characterized by autophagy, apoptosis, neuroinflammation, oxidative stress, mitochondrial dysfunction in PD and AD. Furthermore, this review reveals potential role of polysaccharides in vitro and in vivo models of NDs, and highlights the contributions of polysaccharides and prospects of their mechanism studies for the treatment of NDs. Finally, we suggest some remaining questions for the field and areas for new development.
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Affiliation(s)
- Yinying Wang
- The Central Laboratory of the Second Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Rongsha Chen
- The Central Laboratory of the Second Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Zhongshan Yang
- Yunnan Provincial Key Laboratory of Molecular Biology for Sino Medicine, Yunnan University of Chinese Medicine, Kunming, China
| | - Qian Wen
- The Neurosurgery Department of the Second Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Xia Cao
- The Central Laboratory of the Second Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Ninghui Zhao
- The Neurosurgery Department of the Second Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Jinyuan Yan
- The Central Laboratory of the Second Affiliated Hospital, Kunming Medical University, Kunming, China
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Salvatore MF, Soto I, Kasanga EA, James R, Shifflet MK, Doshier K, Little JT, John J, Alphonso HM, Cunningham JT, Nejtek VA. Establishing Equivalent Aerobic Exercise Parameters Between Early-Stage Parkinson's Disease and Pink1 Knockout Rats. JOURNAL OF PARKINSON'S DISEASE 2022; 12:1897-1915. [PMID: 35754287 PMCID: PMC9535586 DOI: 10.3233/jpd-223157] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Rodent Parkinson's disease (PD) models are valuable to interrogate neurobiological mechanisms of exercise that mitigate motor impairment. Translating these mechanisms to human PD must account for physical capabilities of the patient. OBJECTIVE To establish cardiovascular parameters as a common metric for cross-species translation of aerobic exercise impact. METHOD We evaluated aerobic exercise impact on heart rate (HR) in 21 early-stage PD subjects (Hoehn Yahr ≤1.5) exercising in non-contact boxing training for ≥3 months, ≥3x/week. In 4-month-old Pink1 knockout (KO) rats exercising in a progressively-increased treadmill speed regimen, we determined a specific treadmill speed that increased HR to an extent similar in human subjects. RESULTS After completing aerobic exercise for ∼30 min, PD subjects had increased HR∼35% above baseline (∼63% maximum HR). Motor and cognitive test results indicated the exercising subjects completed the timed up and go (TUG) and trail-making test (TMT-A) in significantly less time versus exercise-naïve PD subjects. In KO and age-matched wild-type (WT) rats, treadmill speeds of 8-10 m/min increased HR up to 25% above baseline (∼67% maximum HR), with no further increases up to 16 m/min. Exercised KO, but not WT, rats showed increased locomotor activity compared to an age-matched exercise-naïve cohort at 5 months old. CONCLUSION These proof-of-concept results indicate HR is a cross-species translation parameter to evaluate aerobic exercise impact on specific motor or cognitive functions in human subjects and rat PD models. Moreover, a moderate intensity exercise regimen is within the physical abilities of early-stage PD patients and is therefore applicable for interrogating neurobiological mechanisms in rat PD models.
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Affiliation(s)
- Michael F Salvatore
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Isabel Soto
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Ella A Kasanga
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Rachael James
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Marla K Shifflet
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Kirby Doshier
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Joel T Little
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Joshia John
- Texas College of Osteopathic Medicine, University of North Texas Health Science Center, Fort Worth, TX, USA
| | | | - J Thomas Cunningham
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Vicki A Nejtek
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
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Vazquez-Mayorga E, Grigoruta M, Dagda R, Martinez B, Dagda RK. Intraperitoneal Administration of Forskolin Reverses Motor Symptoms and Loss of Midbrain Dopamine Neurons in PINK1 Knockout Rats. JOURNAL OF PARKINSON'S DISEASE 2022; 12:831-850. [PMID: 34957950 PMCID: PMC9108570 DOI: 10.3233/jpd-213016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 12/05/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Parkinson's disease (PD) is a relentless, chronic neurodegenerative disease characterized by the progressive loss of substantia nigra (SN) neurons that leads to the onset of motor and non-motor symptoms. Standard of care for PD consists of replenishing the loss of dopamine through oral administration of Levodopa; however, this treatment is not disease-modifying and often induces intolerable side effects. While the etiology that contributes to PD is largely unknown, emerging evidence in animal models suggests that a significant reduction in neuroprotective Protein Kinase A (PKA) signaling in the SN contributes to PD pathogenesis, suggesting that restoring PKA signaling in the midbrain may be a new anti-PD therapeutic alternative. OBJECTIVE We surmised that pharmacological activation of PKA via intraperitoneal administration of Forskolin exerts anti-PD effects in symptomatic PTEN-induced kinase 1 knockout (PINK1-KO), a bona fide in vivo model of PD. METHODS By using a beam balance and a grip strength analyzer, we show that Forskolin reverses motor symptoms and loss of hindlimb strength with long-lasting therapeutic effects (> 5 weeks) following the last dose. RESULTS In comparison, intraperitoneal treatment with Levodopa temporarily (24 h) reduces motor symptoms but unable to restore hindlimb strength in PINK1-KO rats. By using immunohistochemistry and an XF24e BioAnalyzer, Forskolin treatment reverses SN neurons loss, elevates brain energy production and restores PKA activity in SN in symptomatic PINK1-KO rats. CONCLUSION Overall, our collective in vivo data suggest that Forskolin is a promising disease-modifying therapeutic alternative for PD and is superior to Levodopa because it confers long-lasting therapeutic effects.
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Affiliation(s)
| | - Mariana Grigoruta
- Department of Pharmacology, University of Nevada, Reno School of Medicine, Reno, NV, USA
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Ciudad Juarez, Mexico
| | - Raul Dagda
- Department of Pharmacology, University of Nevada, Reno School of Medicine, Reno, NV, USA
| | - Bridget Martinez
- Department of Pharmacology, University of Nevada, Reno School of Medicine, Reno, NV, USA
| | - Ruben K. Dagda
- Department of Pharmacology, University of Nevada, Reno School of Medicine, Reno, NV, USA
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Krasko MN, Hoffmeister JD, Schaen-Heacock NE, Welsch JM, Kelm-Nelson CA, Ciucci MR. Rat Models of Vocal Deficits in Parkinson's Disease. Brain Sci 2021; 11:925. [PMID: 34356159 PMCID: PMC8303338 DOI: 10.3390/brainsci11070925] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 12/21/2022] Open
Abstract
Parkinson's disease (PD) is a progressive, degenerative disorder that affects 10 million people worldwide. More than 90% of individuals with PD develop hypokinetic dysarthria, a motor speech disorder that impairs vocal communication and quality of life. Despite the prevalence of vocal deficits in this population, very little is known about the pathological mechanisms underlying this aspect of disease. As such, effective treatment options are limited. Rat models have provided unique insights into the disease-specific mechanisms of vocal deficits in PD. This review summarizes recent studies investigating vocal deficits in 6-hydroxydopamine (6-OHDA), alpha-synuclein overexpression, DJ1-/-, and Pink1-/- rat models of PD. Model-specific changes to rat ultrasonic vocalization (USV), and the effects of exercise and pharmacologic interventions on USV production in these models are discussed.
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Affiliation(s)
- Maryann N. Krasko
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53792, USA; (M.N.K.); (J.D.H.); (N.E.S.-H.); (J.M.W.); (C.A.K.-N.)
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jesse D. Hoffmeister
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53792, USA; (M.N.K.); (J.D.H.); (N.E.S.-H.); (J.M.W.); (C.A.K.-N.)
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Nicole E. Schaen-Heacock
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53792, USA; (M.N.K.); (J.D.H.); (N.E.S.-H.); (J.M.W.); (C.A.K.-N.)
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jacob M. Welsch
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53792, USA; (M.N.K.); (J.D.H.); (N.E.S.-H.); (J.M.W.); (C.A.K.-N.)
| | - Cynthia A. Kelm-Nelson
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53792, USA; (M.N.K.); (J.D.H.); (N.E.S.-H.); (J.M.W.); (C.A.K.-N.)
| | - Michelle R. Ciucci
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53792, USA; (M.N.K.); (J.D.H.); (N.E.S.-H.); (J.M.W.); (C.A.K.-N.)
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI 53706, USA
- Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI 53705, USA
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Yang Y, Li Q, Guo Y, Liu Y, Li X, Guo J, Li W, Cheng L, Chen H, Kang Y. Lung parenchyma parameters measure of rats from pulmonary window computed tomography images based on ResU-Net model for medical respiratory researches. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2021; 18:4193-4211. [PMID: 34198432 DOI: 10.3934/mbe.2021210] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Our paper proposes a method to measure lung parenchyma parameters from pulmonary window computed tomography images based on ResU-Net model including the CT value, the density, the lung volume, and the surface area of the lungs of healthy rats, to help promote the quantitative analysis of lung parenchyma parameters of rats in medical respiratory researches. Through the analysis of the lung parenchyma parameters of the control group and the treatment group, the law of change among the lung parenchyma parameters is given in our paper. After comparing and analyzing the lung parenchyma parameter CT value and the density of the two groups, it is discovered that the lung parenchyma parameter CT value and the density significantly increase in the treatment group which is after continuously inhaling the nebulization of contrast agents. The change of the lung volume with the surface area in both two groups conforms to the law of lung changes during breathing. The relationship between the lung volume and the CT value or the density is analyzed and it is concluded that the lung volume is negatively correlated with the CT value or the density.
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Affiliation(s)
- Yingjian Yang
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
| | - Qiang Li
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
| | - Yingwei Guo
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
| | - Yang Liu
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
| | - Xian Li
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Jiaqi Guo
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
| | - Wei Li
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
| | - Lei Cheng
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
| | - Huai Chen
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yan Kang
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China
- Medical Health and Intelligent Simulation Laboratory, Medical Device Innovation Center, Shenzhen Technology University, Shenzhen 518118, China
- Engineering Research Centre of Medical Imaging and Intelligent Analysis, Ministry of Education, Shenyang 110169, China
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