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Somasundaram I, Jain SM, Blot-Chabaud M, Pathak S, Banerjee A, Rawat S, Sharma NR, Duttaroy AK. Mitochondrial dysfunction and its association with age-related disorders. Front Physiol 2024; 15:1384966. [PMID: 39015222 PMCID: PMC11250148 DOI: 10.3389/fphys.2024.1384966] [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: 02/12/2024] [Accepted: 06/10/2024] [Indexed: 07/18/2024] Open
Abstract
Aging is a complex process that features a functional decline in many organelles. Various factors influence the aging process, such as chromosomal abnormalities, epigenetic changes, telomere shortening, oxidative stress, and mitochondrial dysfunction. Mitochondrial dysfunction significantly impacts aging because mitochondria regulate cellular energy, oxidative balance, and calcium levels. Mitochondrial integrity is maintained by mitophagy, which helps maintain cellular homeostasis, prevents ROS production, and protects against mtDNA damage. However, increased calcium uptake and oxidative stress can disrupt mitochondrial membrane potential and permeability, leading to the apoptotic cascade. This disruption causes increased production of free radicals, leading to oxidative modification and accumulation of mitochondrial DNA mutations, which contribute to cellular dysfunction and aging. Mitochondrial dysfunction, resulting from structural and functional changes, is linked to age-related degenerative diseases. This review focuses on mitochondrial dysfunction, its implications in aging and age-related disorders, and potential anti-aging strategies through targeting mitochondrial dysfunction.
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Affiliation(s)
- Indumathi Somasundaram
- Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, India
| | - Samatha M. Jain
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, India
| | | | - Surajit Pathak
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, India
| | - Antara Banerjee
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, India
| | - Sonali Rawat
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi, India
| | - Neeta Raj Sharma
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, India
| | - Asim K. Duttaroy
- Department of Nutrition, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
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2
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Sahu Y, Jamadade P, Ch Maharana K, Singh S. Role of mitochondrial homeostasis in D-galactose-induced cardiovascular ageing from bench to bedside. Mitochondrion 2024; 78:101923. [PMID: 38925493 DOI: 10.1016/j.mito.2024.101923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/11/2024] [Accepted: 06/15/2024] [Indexed: 06/28/2024]
Abstract
Ageing is an inevitable phenomenon which affects the cellular to the organism level in the progression of the time. Oxidative stress and inflammation are now widely regarded as the key processes involved in the aging process, which may then cause significant harm to mitochondrial DNA, leading to apoptosis. Normal circulatory function is a significant predictor of disease-free life expectancy. Indeed, disorders affecting the cardiovascular system, which are becoming more common, are the primary cause of worldwide morbidity, disability, and mortality. Cardiovascular aging may precede or possibly underpin overall, age-related health decline. Numerous studies have foundmitochondrial mechanistc approachplays a vital role in the in the onset and development of aging. The D-galactose (D-gal)-induced aging model is well recognized and commonly used in the aging study. In this review we redeposit the association of the previous and current studies on mitochondrial homeostasis and its underlying mechanisms in D-galactose cardiovascular ageing. Further we focus the novel and the treatment strategies to combat the major complication leading to the cardiovascular ageing.
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Affiliation(s)
- Yogita Sahu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hajipur, Vaishali, Bihar, India
| | - Pratiksha Jamadade
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hajipur, Vaishali, Bihar, India
| | - Krushna Ch Maharana
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hajipur, Vaishali, Bihar, India
| | - Sanjiv Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hajipur, Vaishali, Bihar, India.
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3
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Neurons undergo pathogenic metabolic reprogramming in models of familial ALS. Mol Metab 2022; 60:101468. [PMID: 35248787 PMCID: PMC8958550 DOI: 10.1016/j.molmet.2022.101468] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 11/21/2022] Open
Abstract
Objectives Methods Results Conclusions Our work is the first to perform a comprehensive and quantitative analysis of intermediary metabolism in neurons in the setting of fALS causing gene products. Because the cardinal feature of ALS is death of motor neurons, these new studies are directly relevant to the pathogenesis of ALS. Our functional interrogations begin to unpack how metabolic re-wiring is induced by fALS genes and it will be very interesting, in the future, to gain insight in amino acid fueling of the TCA cycle. We suspect pleiotropic effects of amino acid fueling, and this may lead to very targeted therapeutic interventions.
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Wang N, Li J, Xin Q, Xu N. USP30-AS1 contributes to mitochondrial quality control in glioblastoma cells. Biochem Biophys Res Commun 2021; 581:31-37. [PMID: 34653676 DOI: 10.1016/j.bbrc.2021.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/30/2021] [Accepted: 10/03/2021] [Indexed: 12/26/2022]
Abstract
Glioblastoma is the most serious type of brain cancer with poor prognosis. Here, using the publicly available glioma database, we identified that USP30-AS1, an antisense lncRNA locating on the opposite strand of USP30 locus, is upregulated in human gliomas, particularly in high grade glioma. High level of USP30-AS1 is correlated with poor survival in both primary and recurrent glioma patients. USP30-AS1 regulates mitochondrial homeostasis and mitophagy in glioblastoma cells. Knockdown of USP30-AS1 decreases mitochondrial protein expression and mitochondrial mass, promotes mitochondrial uncoupler-induced mitophagy. However, USP30-AS1 does not regulate USP30 expression in a cis-regulatory manner. In summary, this study proposed that USP30-AS1 may serve as a valuable prognostic marker for gliomas. USP3-AS1 is a negative regulator of mitophagy and the regulatory effect is USP30-independent. USP30-AS1 mediated repression of mitophagy may contribute to the loss of mitochondrial homeostasis and tumor development in glioma.
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MESH Headings
- Brain Neoplasms/genetics
- Brain Neoplasms/metabolism
- Brain Neoplasms/mortality
- Brain Neoplasms/pathology
- Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone/pharmacology
- Cell Line, Tumor
- Computational Biology
- Databases, Genetic
- Disease Progression
- Electron Transport Complex IV/genetics
- Electron Transport Complex IV/metabolism
- Gene Expression Regulation, Neoplastic
- Glioblastoma/genetics
- Glioblastoma/metabolism
- Glioblastoma/mortality
- Glioblastoma/pathology
- Humans
- Mitochondria/drug effects
- Mitochondria/genetics
- Mitochondria/metabolism
- Mitochondrial Precursor Protein Import Complex Proteins/genetics
- Mitochondrial Precursor Protein Import Complex Proteins/metabolism
- Mitochondrial Proteins/genetics
- Mitochondrial Proteins/metabolism
- Mitophagy/drug effects
- Mitophagy/genetics
- Neoplasm Grading
- Neoplasm Recurrence, Local/genetics
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/mortality
- Neoplasm Recurrence, Local/pathology
- Neuroglia/drug effects
- Neuroglia/metabolism
- Neuroglia/pathology
- Prognosis
- RNA, Long Noncoding/antagonists & inhibitors
- RNA, Long Noncoding/genetics
- RNA, Long Noncoding/metabolism
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Signal Transduction
- Survival Analysis
- Thiolester Hydrolases/genetics
- Thiolester Hydrolases/metabolism
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Affiliation(s)
- Ningchao Wang
- State Key Laboratory of Chemical Oncogenesis, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China; Open FIESTA Center, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Jiao Li
- Department of Neurology, Wuhan Hankou Hospital, Wuhan, 430010, China
| | - Qilei Xin
- State Key Laboratory of Chemical Oncogenesis, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China; Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Naihan Xu
- State Key Laboratory of Chemical Oncogenesis, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China; Open FIESTA Center, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China; Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
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Klinngam W, Rungkamoltip P, Thongin S, Joothamongkhon J, Khumkhrong P, Khongkow M, Namdee K, Tepaamorndech S, Chaikul P, Kanlayavattanakul M, Lourith N, Piboonprai K, Ruktanonchai U, Asawapirom U, Iempridee T. Polymethoxyflavones from Kaempferia parviflora ameliorate skin aging in primary human dermal fibroblasts and ex vivo human skin. Biomed Pharmacother 2021; 145:112461. [PMID: 34839253 DOI: 10.1016/j.biopha.2021.112461] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/13/2021] [Accepted: 11/19/2021] [Indexed: 12/12/2022] Open
Abstract
Skin aging is accompanied by an increase in the number of senescent cells, resulting in various pathological outcomes. These include inflammation, impaired barrier function, and susceptibility to skin disorders such as cancer. Kaempferia parviflora (Thai black ginger), a medicinal plant native to Thailand, has been shown to counteract inflammation, cancer, and senescence. This study demonstrates that polymethoxyflavones (5,7-dimethoxyflavone, 5,7,4'-trimethoxyflavone, and 3,5,7,3',4'-pentamethoxyflavone) purified from K. parviflora rhizomes suppressed cellular senescence, reactive oxygen species, and the senescence-associated secretory phenotype in primary human dermal fibroblasts. In addition, they increased tropocollagen synthesis and alleviated free radical-induced cellular and mitochondrial damage. Moreover, the compounds mitigated chronological aging in a human ex vivo skin model by attenuating senescence and restoring expression of essential components of the extracellular matrix, including collagen type I, fibrillin-1, and hyaluronic acid. Finally, we report that polymethoxyflavones enhanced epidermal thickness and epidermal-dermal stability, while blocking age-related inflammation in skin explants. Our findings support the use of polymethoxyflavones from K. parviflora as natural anti-aging agents, highlighting their potential as active ingredients in cosmeceutical and nutraceutical products.
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Affiliation(s)
- Wannita Klinngam
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Phetploy Rungkamoltip
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Saowarose Thongin
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Jaruwan Joothamongkhon
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Phattharachanok Khumkhrong
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Mattaka Khongkow
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Katawut Namdee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Surapun Tepaamorndech
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Puxvadee Chaikul
- Phytocosmetics and Cosmeceuticals Research Group, School of Cosmetic Science, Mae Fah Luang University, Chiang Rai, Thailand; School of Cosmetic Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Mayuree Kanlayavattanakul
- Phytocosmetics and Cosmeceuticals Research Group, School of Cosmetic Science, Mae Fah Luang University, Chiang Rai, Thailand; School of Cosmetic Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Nattaya Lourith
- Phytocosmetics and Cosmeceuticals Research Group, School of Cosmetic Science, Mae Fah Luang University, Chiang Rai, Thailand; School of Cosmetic Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Kitiya Piboonprai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand; Laboratory of Host Defense, The World Premier International Research Center Initiative (WPI), Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Uracha Ruktanonchai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Udom Asawapirom
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Tawin Iempridee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand.
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6
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Equine pituitary pars intermedia dysfunction: a spontaneous model of synucleinopathy. Sci Rep 2021; 11:16036. [PMID: 34362943 PMCID: PMC8346493 DOI: 10.1038/s41598-021-95396-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022] Open
Abstract
Equine pituitary pars intermedia dysfunction (PPID) is a common endocrine disease of aged horses that shows a similar pathophysiology as Parkinson’s Disease (PD) with increased levels of α-synuclein (α-syn). While α-syn is thought to play a pathogenic role in horses with PPID, it is unclear if α-syn is also misfolded in the pars intermedia and could similarly promote self-aggregation and propagation. Consequently, α-syn was isolated from the pars intermedia from groups of healthy young and aged horses, and aged PPID-afflicted horses. Seeding experiments confirmed the prion-like properties of α-syn isolated from PPID-afflicted horses. Next, detection of α-syn fibrils in pars intermedia via transmission electron microscopy (TEM) was exclusive to PPID-afflicted horses. A bank of fragment peptides was designed to further characterize equine α-syn misfolding. Region 62–87 of equine and human α-syn peptides was found to be most prone to aggregation according to Tango bioinformatic program and kinetics of aggregation via a thioflavin T fluorescence assay. In both species, fragment peptide 62–87 is capable of generating mature fibrils as demonstrated by TEM. The combined animal, bioinformatic, and biophysical studies provide evidence that equine α-syn is misfolded in PPID horses.
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Wear D, Vegh C, Sandhu JK, Sikorska M, Cohen J, Pandey S. Ubisol-Q 10, a Nanomicellar and Water-Dispersible Formulation of Coenzyme-Q 10 as a Potential Treatment for Alzheimer's and Parkinson's Disease. Antioxidants (Basel) 2021; 10:antiox10050764. [PMID: 34064983 PMCID: PMC8150875 DOI: 10.3390/antiox10050764] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 05/07/2021] [Indexed: 01/15/2023] Open
Abstract
The world continues a desperate search for therapies that could bring hope and relief to millions suffering from progressive neurodegenerative diseases such as Alzheimer’s (AD) and Parkinson’s (PD). With oxidative stress thought to be a core stressor, interests have long been focused on applying redox therapies including coenzyme-Q10. Therapeutic use has failed to show efficacy in human clinical trials due to poor bioavailability of this lipophilic compound. A nanomicellar, water-dispersible formulation of coenzyme-Q10, Ubisol-Q10, has been developed by combining coenzyme-Q10 with an amphiphilic, self-emulsifying molecule of polyoxyethanyl α-tocopheryl sebacate (derivatized vitamin E). This discovery made possible, for the first time, a proper assessment of the true therapeutic value of coenzyme-Q10. Micromolar concentrations of Ubisol-Q10 show unprecedented neuroprotection against neurotoxin exposure in in vitro and in vivo models of neurodegeneration and was extremely effective when delivered either prior to, at the time of, and most significantly, post-neurotoxin exposure. These findings indicate a possible way forward for clinical development due to effective doses well within Federal Drug Administration guidelines. Ubisol-Q10 is a potent mobilizer of astroglia, antioxidant, senescence preventer, autophagy activator, anti-inflammatory, and mitochondrial stabilizer. Here we summarize the work with oil-soluble coenzyme-Q10, its limitations, and focus mainly on efficacy of water-soluble coenzyme-Q10 in neurodegeneration.
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Affiliation(s)
- Darcy Wear
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON N9B 3P4, Canada; (D.W.); (C.V.)
| | - Caleb Vegh
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON N9B 3P4, Canada; (D.W.); (C.V.)
| | - Jagdeep K. Sandhu
- Human Health Therapeutics Centre (HHT), National Research Council Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
- Correspondence: (J.K.S.); (S.P.); Tel.: +1-519-253-3000 (ext. 3701) (S.P.)
| | - Marianna Sikorska
- Researcher Emeritus, Human Health Therapeutics Centre, National Research Council Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada;
| | - Jerome Cohen
- Department of Psychology, University of Windsor, 401 Sunset Avenue, Windsor, ON N9B 3P4, Canada;
| | - Siyaram Pandey
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON N9B 3P4, Canada; (D.W.); (C.V.)
- Correspondence: (J.K.S.); (S.P.); Tel.: +1-519-253-3000 (ext. 3701) (S.P.)
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Pradeepkiran JA, Reddy AP, Yin X, Manczak M, Reddy PH. Protective effects of BACE1 inhibitory ligand molecules against amyloid beta-induced synaptic and mitochondrial toxicities in Alzheimer's disease. Hum Mol Genet 2020; 29:49-69. [PMID: 31595293 DOI: 10.1093/hmg/ddz227] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/25/2019] [Accepted: 09/16/2019] [Indexed: 12/12/2022] Open
Abstract
Amyloid-β (Aβ) peptides are the major drivers of Alzheimer's disease (AD) pathogenesis, and are formed by successive cleavage of the amyloid precursor protein (APP) by the beta and gamma secretases. Mounting evidence suggests that Aβ and mitochondrial structural and functional abnormalities are critically involved in the loss of synapses and cognitive decline, in patients with AD. In AD brain, state the sequential proteolytic cleavage of APP by beta secretase 1 enzyme (BACE1) and γ-secretase leads to the production and release of Aβ40 and 42. BACE1 expression and activity increased in the brains of AD patients. Structurally, β-secretase has a very large binding site (1000 Å) with fewer hydrophobic domains that makes a challenge to identify the specific targets/binding sites of BACE1. In the present study, we constructed a BACE1 pharmacophore with pepstatin and screened through molecular docking studies. We found one potential candidate (referred as ligand 1) that binds to the key catalytic residues of BACE1 and predicts to inhibit abnormal APP processing and reduce Aβ levels in AD neurons. Using biochemical, molecular, transmission electron microscopy, immunoblotting and immunofluorescence analyses, we studied the protective effects of ligand 1 against Aβ-induced synaptic and mitochondrial toxicities in mouse neuroblastoma (N2a) cells that express mutant APP. We found interaction between ligand 1 and BACE1 and this interaction decreased BACE1 activity, Aβ40 and 42 levels. We also found increased mitochondrial biogenesis, mitochondrial fusion and synaptic activity and reduced mitochondrial fission in ligand 1-treated mutant APP cells. Based on these results, we cautiously conclude that ligand 1 reduces Aβ-induced mitochondrial and synaptic toxicities, and maintains mitochondrial dynamics and neuronal function in AD.
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Affiliation(s)
- Jangampalli Adi Pradeepkiran
- Internal Medicine Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
| | - Arubala P Reddy
- Pharmacology & Neuroscience Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
| | - Xiangling Yin
- Garrison Institute on Aging, South West Campus, Texas Tech University Health Sciences Center, 6630 S. Quaker Suite E, Lubbock, TX 79413, USA
| | - Maria Manczak
- Garrison Institute on Aging, South West Campus, Texas Tech University Health Sciences Center, 6630 S. Quaker Suite E, Lubbock, TX 79413, USA
| | - P Hemachandra Reddy
- Internal Medicine Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA.,Pharmacology & Neuroscience Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA.,Garrison Institute on Aging, South West Campus, Texas Tech University Health Sciences Center, 6630 S. Quaker Suite E, Lubbock, TX 79413, USA.,Cell Biology & Biochemistry Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA.,Neurology Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA.,Speech, Language and Hearing Sciences Departments, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA.,Public Health Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
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