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Jalloh A, Flowers A, Hudson C, Chaput D, Guergues J, Stevens SM, Bickford PC. Polyphenol Supplementation Reverses Age-Related Changes in Microglial Signaling Cascades. Int J Mol Sci 2021; 22:6373. [PMID: 34198710 PMCID: PMC8232085 DOI: 10.3390/ijms22126373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 12/24/2022] Open
Abstract
Microglial activity in the aging neuroimmune system is a central player in aging-related dysfunction. Aging alters microglial function via shifts in protein signaling cascades. These shifts can propagate neurodegenerative pathology. Therapeutics require a multifaceted approach to understand and address the stochastic nature of this process. Polyphenols offer one such means of rectifying age-related decline. Our group used mass spectrometry (MS) analysis to explicate the complex nature of these aging microglial pathways. In our first experiment, we compared primary microglia isolated from young and aged rats and identified 197 significantly differentially expressed proteins between these groups. Then, we performed bioinformatic analysis to explore differences in canonical signaling cascades related to microglial homeostasis and function with age. In a second experiment, we investigated changes to these pathways in aged animals after 30-day dietary supplementation with NT-020, which is a blend of polyphenols. We identified 144 differentially expressed proteins between the NT-020 group and the control diet group via MS analysis. Bioinformatic analysis predicted an NT-020 driven reversal in the upregulation of age-related canonical pathways that control inflammation, cellular metabolism, and proteostasis. Our results highlight salient aspects of microglial aging at the level of protein interactions and demonstrate a potential role of polyphenols as therapeutics for age-associated dysfunction.
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Affiliation(s)
- Ahmad Jalloh
- Center of Excellence for Aging and Brain Repair, Departments of Neurosurgery and Brain Repair, and Molecular Pharmacology and Physiology, USF Morsani College of Medicine, 12901 Bruce B. Downs Blvd, MDC 78, Tampa, FL 33612, USA; (A.J.); (A.F.)
| | - Antwoine Flowers
- Center of Excellence for Aging and Brain Repair, Departments of Neurosurgery and Brain Repair, and Molecular Pharmacology and Physiology, USF Morsani College of Medicine, 12901 Bruce B. Downs Blvd, MDC 78, Tampa, FL 33612, USA; (A.J.); (A.F.)
| | - Charles Hudson
- Research Service, James A Haley VA Hospital, Tampa, FL 33620, USA;
| | - Dale Chaput
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL 33620, USA; (D.C.); (J.G.); (S.M.S.J.)
| | - Jennifer Guergues
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL 33620, USA; (D.C.); (J.G.); (S.M.S.J.)
| | - Stanley M. Stevens
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL 33620, USA; (D.C.); (J.G.); (S.M.S.J.)
| | - Paula C. Bickford
- Center of Excellence for Aging and Brain Repair, Departments of Neurosurgery and Brain Repair, and Molecular Pharmacology and Physiology, USF Morsani College of Medicine, 12901 Bruce B. Downs Blvd, MDC 78, Tampa, FL 33612, USA; (A.J.); (A.F.)
- Research Service, James A Haley VA Hospital, Tampa, FL 33620, USA;
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Paredes DA, Jalloh A, Catlow BJ, Jaishankar A, Seo S, Jimenez DV, Martinowich K, Diaz-Bustamante M, Hoeppner DJ, McKay RDG. Bdnf deficiency in the neonatal hippocampus contributes to global dna hypomethylation and adult behavioral changes. Brain Res 2021; 1754:147254. [PMID: 33422542 DOI: 10.1016/j.brainres.2020.147254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/13/2020] [Accepted: 12/18/2020] [Indexed: 10/22/2022]
Abstract
Schizophrenia is a neurodevelopmental psychiatric disorder, encompassing genetic and environmental risk factors. For several decades, investigators have been implementing the use of lesions of the neonatal rodent hippocampus to model schizophrenia, resulting in a broad spectrum of adult schizophrenia-related behavioral changes. Despite the extensive use of these proposed animal models of schizophrenia, the mechanisms by which these lesions result in schizophrenia-like behavioral alterations remain unclear. Here we provide in vivo evidence that transient pharmacological inactivation of the hippocampus via tetrodotoxin microinjections or a genetic reduction in brain derived neurotrophic factor (BDNF) protein levels (BDNF+/- rats) lead to global DNA hypomethylation, disrupted maturation of the neuronal nucleus and aberrant acoustic startle response in the adult rat. The similarity between the effects of the two treatments strongly indicate that BDNF signaling is involved in effects obtained after the TTX microinjections. These findings may shed light on the cellular mechanisms underlying the phenotypical features of neonatal transient inhibition of the hippocampus as a preclinical model of schizophrenia and suggest that BDNF signaling represents a target pathway for development of novel treatment therapies.
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Affiliation(s)
- Daniel A Paredes
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, USA; Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA; Department of Neurology, Johns Hopkins University, Baltimore, MD, USA.
| | - Ahmad Jalloh
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA; Molecular Pharmacology & Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Briony J Catlow
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, USA; Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA
| | - Amritha Jaishankar
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA
| | - Seungmae Seo
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA; Department of Pediatrics, Columbia University, New York, NY, USA
| | - Dennisse V Jimenez
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, USA
| | - Keri Martinowich
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA
| | - Marcelo Diaz-Bustamante
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA; Department of Physiology, Johns Hopkins University, Baltimore, MD, USA
| | - Daniel J Hoeppner
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, USA
| | - Ronald D G McKay
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, USA
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Evans R, Taylor S, Kalasthry J, Sakai N, Miles A, Aboagye A, Agoramoorthy L, Ahmed S, Amadi A, Anand G, Atkin G, Austria A, Ball S, Bazari F, Beable R, Beare S, Beedham H, Beeston T, Bharwani N, Bhatnagar G, Bhowmik A, Blakeway L, Blunt D, Boavida P, Boisfer D, Breen D, Bridgewater J, Burke S, Butawan R, Campbell Y, Chang E, Chao D, Chukundah S, Clarke C, Collins B, Collins C, Conteh V, Couture J, Crosbie J, Curtis H, Daniel A, Davis L, Desai K, Duggan M, Ellis S, Elton C, Engledow A, Everitt C, Ferdous S, Frow A, Furneaux M, Gibbons N, Glynne-Jones R, Gogbashian A, Goh V, Gourtsoyianni S, Green A, Green L, Green L, Groves A, Guthrie A, Hadley E, Halligan S, Hameeduddin A, Hanid G, Hans S, Hans B, Higginson A, Honeyfield L, Hughes H, Hughes J, Hurl L, Isaac E, Jackson M, Jalloh A, Janes S, Jannapureddy R, Jayme A, Johnson A, Johnson E, Julka P, Kalasthry J, Karapanagiotou E, Karp S, Kay C, Kellaway J, Khan S, Koh D, Light T, Limbu P, Lock S, Locke I, Loke T, Lowe A, Lucas N, Maheswaran S, Mallett S, Marwood E, McGowan J, Mckirdy F, Mills-Baldock T, Moon T, Morgan V, Morris S, Morton A, Nasseri S, Navani N, Nichols P, Norman C, Ntala E, Nunes A, Obichere A, O'Donohue J, Olaleye I, Oliver A, Onajobi A, O'Shaughnessy T, Padhani A, Pardoe H, Partridge W, Patel U, Perry K, Piga W, Prezzi D, Prior K, Punwani S, Pyers J, Rafiee H, Rahman F, Rajanpandian I, Ramesh S, Raouf S, Reczko K, Reinhardt A, Robinson D, Rockall A, Russell P, Sargus K, Scurr E, Shahabuddin K, Sharp A, Shepherd B, Shiu K, Sidhu H, Simcock I, Simeon C, Smith A, Smith D, Snell D, Spence J, Srirajaskanthan R, Stachini V, Stegner S, Stirling J, Strickland N, Tarver K, Teague J, Thaha M, Train M, Tulmuntaha S, Tunariu N, van Ree K, Verjee A, Wanstall C, Weir S, Wijeyekoon S, Wilson J, Wilson S, Win T, Woodrow L, Yu D. Patient deprivation and perceived scan burden negatively impact the quality of whole-body MRI. Clin Radiol 2020; 75:308-315. [PMID: 31836179 DOI: 10.1016/j.crad.2019.10.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/30/2019] [Indexed: 01/26/2023]
Abstract
AIM To evaluate the association between the image quality of cancer staging whole-body magnetic resonance imaging (WB-MRI) and patient demographics, distress, and perceived scan burden. MATERIALS AND METHODS A sample of patients recruited prospectively to multicentre trials comparing WB-MRI with standard scans for staging lung and colorectal cancer were invited to complete two questionnaires. The baseline questionnaire, administered at recruitment, collated data on demographics, distress and co-morbidity. The follow-up questionnaire, completed after staging investigations, measured perceived WB-MRI scan burden (scored 1 low to 7 high). WB-MRI anatomical coverage, and technical quality was graded by a radiographic technician and grading combined to categorise the scan as "optimal", "sub-optimal" or "degraded". A radiologist categorised 30 scans to test interobserver agreement. Data were analysed using the chi-square, Fisher's exact, t-tests, and multinomial regression. RESULTS One hundred and fourteen patients were included in the study (53 lung, 61 colorectal; average age 65.3 years, SD=11.8; 66 men [57.9%]). Overall, 45.6% (n=52), scans were classified as "optimal" quality, 39.5% (n=45) "sub-optimal", and 14.9% (n=17) as "degraded". In adjusted analyses, greater deprivation level and higher patient-reported scan burden were both associated with a higher likelihood of having a sub-optimal versus an optimal scan (odds ratio [OR]: 4.465, 95% confidence interval [CI]: 1.454 to 13.709, p=0.009; OR: 1.987, CI: 1.153 to 3.425, p=0.013, respectively). None of the variables predicted the likelihood of having a degraded scan. CONCLUSIONS Deprivation and patients' perceived experience of the WB-MRI are related to image quality. Tailored protocols and individualised patient management before and during WB-MRI may improve image quality.
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Vanlauwe B, AbdelGadir AH, Adewopo J, Adjei-Nsiah S, Ampadu-Boakye T, Asare R, Baijukya F, Baars E, Bekunda M, Coyne D, Dianda M, Dontsop-Nguezet PM, Ebanyat P, Hauser S, Huising J, Jalloh A, Jassogne L, Kamai N, Kamara A, Kanampiu F, Kehbila A, Kintche K, Kreye C, Larbi A, Masso C, Matungulu P, Mohammed I, Nabahungu L, Nielsen F, Nziguheba G, Pypers P, Roobroeck D, Schut M, Taulya G, Thuita M, Uzokwe VNE, van Asten P, Wairegi L, Yemefack M, Mutsaers HJW. Looking back and moving forward: 50 years of soil and soil fertility management research in sub-Saharan Africa. Int J Agric Sustain 2017; 15:613-631. [PMID: 30636968 PMCID: PMC6310433 DOI: 10.1080/14735903.2017.1393038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Low and declining soil fertility has been recognized for a long time as a major impediment to intensifying agriculture in sub-Saharan Africa (SSA). Consequently, from the inception of international agricultural research, centres operating in SSA have had a research programme focusing on soil and soil fertility management, including the International Institute of Tropical Agriculture (IITA). The scope, content, and approaches of soil and soil fertility management research have changed over the past decades in response to lessons learnt and internal and external drivers and this paper uses IITA as a case study to document and analyse the consequences of strategic decisions taken on technology development, validation, and ultimately uptake by smallholder farmers in SSA. After an initial section describing the external environment within which soil and soil fertility management research is operating, various dimensions of this research area are covered: (i) 'strategic research', 'Research for Development', partnerships, and balancing acts, (ii) changing role of characterization due to the expansion in geographical scope and shift from soils to farms and livelihoods, (iii) technology development: changes in vision, content, and scale of intervention, (iv) technology validation and delivery to farming communities, and (v) impact and feedback to the technology development and validation process. Each of the above sections follows a chronological approach, covering the last five decades (from the late 1960s till today). The paper ends with a number of lessons learnt which could be considered for future initiatives aiming at developing and delivering improved soil and soil fertility management practices to smallholder farming communities in SSA.
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Affiliation(s)
- B. Vanlauwe
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | | | | | | | - T. Ampadu-Boakye
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | | | | | - E. Baars
- IITA, Experimental and Outreach Station, Abuja, Nigeria
| | - M. Bekunda
- IITA, The World Vegetable Center, Arusha, Tanzania
| | - D. Coyne
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | | | | | | | | | | | | | | | | | | | - F. Kanampiu
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | - A. Kehbila
- IITA, Kinshasa, Democratic Republic of Congo
| | - K. Kintche
- IITA, Kinshasa, Democratic Republic of Congo
| | | | - A. Larbi
- Regional Education Office, IITA, Tamale, Ghana
| | - C. Masso
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | | | | | | | - F. Nielsen
- IITA, Bukavu, Democratic Republic of Congo
| | - G. Nziguheba
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | - P. Pypers
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | - D. Roobroeck
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | | | | | - M. Thuita
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
| | | | | | - L. Wairegi
- International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
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Flowers A, Bell-Temin H, Jalloh A, Stevens SM, Bickford PC. Proteomic anaysis of aged microglia: shifts in transcription, bioenergetics, and nutrient response. J Neuroinflammation 2017; 14:96. [PMID: 28468668 PMCID: PMC5415769 DOI: 10.1186/s12974-017-0840-7] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/14/2017] [Indexed: 01/01/2023] Open
Abstract
Background Age is the primary risk factor for many diseases. As such, age is a critical co-factor for examination in order to understand the progression and potential intervention in disease progression. Studies examining both the phenotype and transcriptome of aged microglia demonstrated a propensity for the development of a pro-inflammatory phenotype. Less well studied is the concomitant blunting of anti-inflammatory aspects of microglial function with age which also impact plasticity and repair in the CNS. Methods This study utilizes mass spectrometry-based proteomics to compare primary microglia from young and aged animals. Results This study revealed alterations in three clusters of inter-related proteins. The three pathways were inflammatory signaling, mitochondrial function, and cellular metabolism. Analysis of these clusters identified the protein rapamycin-insensitive companion of mTOR (RICTOR), a component of the mTORC2 complex, as a novel upstream regulator of several biological functions that are altered with age and potentially linked to phenotype development. A decrease in mTORC2-dependent AKT S473 phosphorylation, as assessed by insulin growth factor (IGF) treatment, was observed in aged microglia. This novel finding was confirmed by genetic manipulation of the microglial cell line. BV2 cells with diminished RICTOR displayed a phenotype that was strikingly similar to that of aged microglia. This finding is particularly relevant as the mTOR pathway already has a number of pharmacological modulators used clinically. Conclusions The results suggest that microglia from aged mice show changes in cellular metabolism and energy regulation that might underlie the alterations in inflammatory signaling. Modulation of one pathway identified in our bioinformatic analysis, RICTOR, may provide an avenue by which deleterious aspects of the aging microglia can be attenuated. If successful, this could mean potentially delaying or diminishing the progress of diseases for which progressive inflammation is involved. Electronic supplementary material The online version of this article (doi:10.1186/s12974-017-0840-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Antwoine Flowers
- Department of Neurosurgery and Brain Repair, USF Health Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd., Campus Box MDC-78, Tampa, FL, 33570, USA.,Department of Molecular Pharmacology and Physiology, USF Health Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Harris Bell-Temin
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, USA
| | - Ahmad Jalloh
- Department of Neurosurgery and Brain Repair, USF Health Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd., Campus Box MDC-78, Tampa, FL, 33570, USA.,Department of Molecular Pharmacology and Physiology, USF Health Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Stanley M Stevens
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, USA
| | - Paula C Bickford
- Department of Neurosurgery and Brain Repair, USF Health Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd., Campus Box MDC-78, Tampa, FL, 33570, USA. .,Department of Molecular Pharmacology and Physiology, USF Health Morsani College of Medicine, University of South Florida, Tampa, FL, USA. .,Research Service, James A Haley VA Hospital, Tampa, FL, USA.
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Jalloh A, Tantular IS, Pusarawati S, Kawilarang AP, Kerong H, Lin K, Ferreira MU, Matsuoka H, Arai M, Kita K, Kawamoto F. Rapid epidemiologic assessment of glucose-6-phosphate dehydrogenase deficiency in malaria-endemic areas in Southeast Asia using a novel diagnostic kit. Trop Med Int Health 2004; 9:615-23. [PMID: 15117307 DOI: 10.1111/j.1365-3156.2004.01237.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We recently reported a new rapid screening method for glucose-6-phosphate dehydrogenase (G6PD) deficiency. This method incorporates a new formazan substrate (WST-8) and is capable of detecting heterozygous females both qualitatively and quantitatively. Here, we report its evaluation during field surveys at three malaria centres and in malaria-endemic villages of Myanmar and Indonesia, either alone or in combination with a rapid on-site diagnosis of malaria. A total of 57 severe (45 males and 12 females) and 34 mild (five males and 29 females) cases of G6PD deficiency were detected among 855 subjects in Myanmar whilst 30 severe (25 males and five females) and 23 mild (six males and 17 females) cases were found among 1286 subjects in Indonesia. In all cases, severe deficiency was confirmed with another formazan method but due to limitations in its detection threshold, mild cases were misdiagnosed as G6PD-normal by this latter method. Our results indicate that the novel method can qualitatively detect both severely deficient subjects as well as heterozygous females in the field. The antimalarial drug, primaquine, was safely prescribed to Plasmodium vivax-infected patients in Myanmar. Our new, rapid screening method may be essential for the diagnosis of G6PD deficiency particularly in rural areas without electricity, and can be recommended for use in malaria control programmes.
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Affiliation(s)
- A Jalloh
- Department of International Health, Nagoya University Graduate School of Medicine, Showa, Nagoya, Japan.
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Jalloh A, Dahniya M, Ezumah H. PRODUCTION OF CASSAVA-RICE INTERCROP AS INFLUENCED BY CASSAVA VARIETY AND TIME OF INTRODUCING RICE INTO CASSAVA. ACTA ACUST UNITED AC 1994. [DOI: 10.17660/actahortic.1994.380.30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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