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Witzel MT, Veltri LM, Kostelic M, Elshamy YS, Lucas JA, Lai S, Du C, Wysocki VH, Holland LA. Protein analysis using capillary electrophoresis coupled to mass spectrometry through vibrating sharp-edge spray ionization. Electrophoresis 2024. [PMID: 38577828 DOI: 10.1002/elps.202300298] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/11/2024] [Accepted: 03/14/2024] [Indexed: 04/06/2024]
Abstract
Capillary electrophoresis (CE) interfaced to mass spectrometry (MS) with electrospray ionization typically incorporates acidic additives or organic solvents to assist in ionization. Vibrating sharp-edge spray ionization (VSSI) is a voltage-free method to interface CE and MS that does not require these additives, making it appealing for protein analyses. CE-VSSI nanoflow sheath separations are performed with low ionic strength aqueous solutions in the sheath to reduce suppression. Serine is also included in the sheath to reduce analyte adduction. Proteins are detected in the 2.5-10 µM range, corresponding to an injected mass range of 0.1-1.2 ng. The anionic proteins β-lactoglobulin and transferrin are resolved using an unmodified fused silica capillary because they do not exhibit nonspecific surface adsorption. Conversely, separations of cationic proteins cytochrome c, ribonuclease A, and α-chymotrypsinogen A in an unmodified capillary require acidic background electrolytes to overcome adsorption. Alternatively, a semipermanent coating comprised self-assembled lipids overcomes surface adsorption at a neutral pH. Separations with zwitterionic and hybrid cationic coatings are complete within 15 or 6 min, respectively. The dimeric form of triosephosphate isomerase was observed at a 60 µM, corresponding to a mass of 19 ng, by dropping the temperature of the MS inlet.
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Affiliation(s)
- Makenzie T Witzel
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, USA
| | - Lindsay M Veltri
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, USA
| | - Marius Kostelic
- Resource for Native Mass Spectrometry Guided Structural Biology, The Ohio State University, Columbus, Ohio, USA
| | - Yousef S Elshamy
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, USA
| | - John A Lucas
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, USA
| | - Stella Lai
- Resource for Native Mass Spectrometry Guided Structural Biology, The Ohio State University, Columbus, Ohio, USA
| | - Chen Du
- Resource for Native Mass Spectrometry Guided Structural Biology, The Ohio State University, Columbus, Ohio, USA
| | - Vicki H Wysocki
- Resource for Native Mass Spectrometry Guided Structural Biology, The Ohio State University, Columbus, Ohio, USA
| | - Lisa A Holland
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, USA
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2
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Lachner C, Craver EC, Babulal GM, Lucas JA, Ferman TJ, White RO, Graff-Radford NR, Day GS. Disparate Dementia Risk Factors Are Associated with Cognitive Impairment and Rates of Decline in African Americans. Ann Neurol 2024; 95:518-529. [PMID: 38069571 PMCID: PMC10922775 DOI: 10.1002/ana.26847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/10/2024]
Abstract
OBJECTIVE This study was undertaken to evaluate the frequency of modifiable dementia risk factors and their association with cognitive impairment and rate of decline in diverse participants engaged in studies of memory and aging. METHODS Modifiable dementia risk factors and their associations with cognitive impairment and cognitive decline were determined in community-dwelling African American (AA; n = 261) and non-Hispanic White (nHW; n = 193) participants who completed ≥2 visits at the Mayo Clinic Alzheimer Disease Research Center in Jacksonville, Florida. Risk factors and their associations with cognitive impairment (global Clinical Dementia Rating [CDR] ≥ 0.5) and rates of decline (CDR Sum of Boxes) in impaired participants were compared in AA and nHW participants, controlling for demographics, APOE ɛ4 status, and Area Deprivation Index. RESULTS Hypertension, hypercholesterolemia, obesity, and diabetes were overrepresented in AA participants, but were not associated with cognitive impairment. Depression was associated with increased odds of cognitive impairment in AA (odds ratio [OR] = 4.30, 95% confidence interval [CI] = 2.13-8.67) and nHW participants (OR = 2.79, 95% CI = 1.21-6.44) but uniquely associated with faster decline in AA participants (β = 1.71, 95% CI = 0.69-2.73, p = 0.001). Fewer AA participants reported antidepressant use (9/49, 18%) than nHW counterparts (57/78, 73%, p < 0.001). Vitamin B12 deficiency was also associated with an increased rate of cognitive decline in AA participants (β = 2.65, 95% CI = 0.38-4.91, p = 0.023). INTERPRETATION Modifiable dementia risk factors are common in AA and nHW participants, representing important risk mitigation targets. Depression was associated with dementia in AA and nHW participants, and with accelerated declines in cognitive function in AA participants. Optimizing depression screening and treatment may improve cognitive trajectories and outcomes in AA participants. ANN NEUROL 2024;95:518-529.
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Affiliation(s)
- Christian Lachner
- Mayo Clinic Florida, Department of Neurology; Jacksonville, FL, 32224, USA
- Mayo Clinic Florida, Department of Psychiatry & Psychology; Jacksonville, FL, 32224, USA
| | - Emily C. Craver
- Mayo Clinic Florida, Department of Quantitative Health Sciences; Jacksonville, FL, 32224, USA
| | - Ganesh M. Babulal
- Washington University in St. Louis, Department of Neurology; St. Louis, MO, 63110, USA
| | - John A. Lucas
- Mayo Clinic Florida, Department of Psychiatry & Psychology; Jacksonville, FL, 32224, USA
| | - Tanis J. Ferman
- Mayo Clinic Florida, Department of Psychiatry & Psychology; Jacksonville, FL, 32224, USA
| | - Richard O. White
- Mayo Clinic Florida, Division of Community Internal Medicine; Jacksonville, FL, 32224, USA
- Mayo Center for Health Equity and Community Engaged Research, Jacksonville, FL, 32224, USA
| | | | - Gregory S. Day
- Mayo Clinic Florida, Department of Neurology; Jacksonville, FL, 32224, USA
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3
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Weber NH, Grimison CC, Lucas JA, Mackie JC, Stockenhuber M, Kennedy EM. Influence of reactor composition on the thermal decomposition of perfluorooctanesulfonic acid (PFOS). J Hazard Mater 2024; 461:132665. [PMID: 37813030 DOI: 10.1016/j.jhazmat.2023.132665] [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] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/21/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
Various reactor tubes (quartz, stainless steel 316 and stainless steel 253 MA) were used to examine their influence on the thermal decomposition of perfluorooctanesulfonic acid (PFOS) between 400 and 1000 °C. Using helium as a carrier gas, with the addition of 100 - 300 ppm of PFOS to the feed gas, the influence of the reactor materials on PFOS decomposition was studied. The quartz reactor led to a notable reduction in the concentration of HF and substantial quantities of SiF4 were observed. Stainless steel 316 produced C2F4, HF, COF2 and SO2 as its primary products up to 800 °C. However, at temperatures above 800 °C, near quantitative removal of SO2 from the gas phase was observed, with the concomitant formation of a blue molybdenum sulfur complex. Stainless steel 253 MA, the composition of which contains over 1% Si produced substantial quantities of SiF4 but no significant decrease in the gas phase concentration of HF. ENVIRONMENTAL IMPLICATION: This research underscores the significant role of reactor material in the thermal treatment of PFAS, a globally widespread and enduring environmental contaminant. The findings have direct implications for the optimization of thermal treatment strategies aimed at mitigating PFAS contamination. The insight into how different reactor materials interact with PFOS during thermal treatment expands our understanding of potential destruction methods. This knowledge is crucial in the development of effective, sustainable strategies for managing persistent environmental pollutants like PFAS.
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Affiliation(s)
- Nathan H Weber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | | | - John A Lucas
- Ventia Services Pty Ltd, North Sydney, NSW 2060, Australia
| | - John C Mackie
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Michael Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Eric M Kennedy
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia.
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4
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Nissim NR, Fudge MR, Lachner C, Babulal GM, Allyse MA, Graff-Radford NR, Lucas JA, Day GS. Age-Specific Barriers and Facilitators to Research Participation Amongst African Americans in Observational Studies of Memory and Aging. J Racial Ethn Health Disparities 2023:10.1007/s40615-023-01741-z. [PMID: 37555913 PMCID: PMC10853486 DOI: 10.1007/s40615-023-01741-z] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/15/2023] [Accepted: 07/27/2023] [Indexed: 08/10/2023]
Abstract
BACKGROUND Black/African Americans experience a high burden of Alzheimer disease and related dementias yet are critically underrepresented in corresponding research. Understanding barriers and facilitators to research participation among younger and older African Americans is necessary to inform age-specific strategies to promote equity in studies of early- and late-onset neurodegenerative diseases. STUDY DESIGN Survey respondents (n = 240) rated barriers and facilitators of research participation. Age-specific differences were evaluated using nonparametric Kruskal-Wallis tests across respondents aged 18-44 years (n = 76), 45-64 years (n = 83), and ≥ 65 years (n = 81). Strategies to mitigate barriers and promote facilitators were further explored via community-based focus groups. Pooled frequency of common themes discussed in focus groups were evaluated and compared across different ages including ≥ 45 years, ≥ 65 years, and mixed ages ≥ 45 years. RESULTS Younger respondents (aged 18-44 and 45-64 years) expressed a greater need for flexibility in when, where, and how research testing takes place versus adults ≥ 65 years. Focus groups emphasized long-lasting consequences of systemic racism and the need to build and foster trust to resolve barriers and promote research engagement amongst African Americans. DISCUSSION Age-specific strategies are needed to increase engagement, address recruitment disparities, and promote retention of African American participants in memory and aging studies across the lifespan.
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Affiliation(s)
- Nicole R Nissim
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Michelle R Fudge
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Christian Lachner
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - Megan A Allyse
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - John A Lucas
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Gregory S Day
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA.
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5
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Bergeron CD, Robinson MT, Willis FB, Albertie ML, Wainwright JD, Fudge MR, Parfitt FC, Lucas JA. Creating a Dementia Friendly Community in an African American Neighborhood: Perspectives of People Living with Dementia, Care Partners, Stakeholders, and Community Residents. J Appl Gerontol 2023; 42:280-289. [PMID: 36184924 PMCID: PMC9906431 DOI: 10.1177/07334648221130055] [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] [Indexed: 01/26/2023] Open
Abstract
A dementia friendly community allows people with dementia and their care partners to remain engaged in their community well into the disease. This study presents the results of primary research aimed at exploring perceptions regarding building a dementia friendly community in an African American neighborhood in northeast Florida. Twelve focus groups and five interviews were conducted with people living with dementia, informal and formal care partners, community stakeholders and neighborhood residents, and analyzed using a grounded theory approach. Three main themes emerged from the analyses, including (1) perceived needs, (2) facilitators and barriers to being dementia friendly, and (3) opportunities for the community to become more dementia friendly. Study findings highlight the unique needs of a single African American neighborhood and the importance of culturally tailoring the dementia friendly model to diverse communities.
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Affiliation(s)
- Caroline D. Bergeron
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - Maisha T. Robinson
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - Floyd B. Willis
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - Monica L. Albertie
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - Jolita D. Wainwright
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - Michelle R. Fudge
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - Francine C. Parfitt
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
| | - John A. Lucas
- Outreach, Recruitment and Engagement Core, Alzheimer’s Disease Research Center, Mayo Clinic, Jacksonville, FL, USA
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6
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Weber NH, Delva CS, Stockenhuber SP, Grimison CC, Lucas JA, Mackie JC, Stockenhuber M, Kennedy EM. Thermal Mineralization of Perfluorooctanesulfonic Acid (PFOS) to HF, CO 2, and SO 2. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nathan H. Weber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | - Cameron S. Delva
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | | | | | - John A. Lucas
- Ventia Services Pty Ltd, North SydneyNew South Wales2060, Australia
| | - John C. Mackie
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | - Michael Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | - Eric M. Kennedy
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
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7
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Bergeron CD, Robinson MT, Willis FB, Albertie ML, Wainwright JD, Fudge MR, Parfitt FC, Crook JE, Ball CT, Lucas JA. Testing an Alzheimer's Disease Educational Approach in Two African American Neighborhoods in Florida. J Racial Ethn Health Disparities 2022; 9:2283-2290. [PMID: 34647272 PMCID: PMC9005559 DOI: 10.1007/s40615-021-01165-7] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 12/29/2022]
Abstract
African Americans experience a significantly greater burden of Alzheimer's disease (AD) compared to non-Hispanic White Americans. Raising awareness and increasing knowledge of AD within African American communities is an important step towards addressing these disparities. The purpose of this study was to assess the effectiveness of two approaches to sharing AD knowledge with community residents. Using a quasi-experimental design, African American participants were recruited through community partners and local resources in two comparable neighborhoods in Duval County, Florida, which formed the intervention and the comparison groups for this study. The identical 40-min educational lecture was provided to both groups. In the intervention community, the lecture was followed by focus group sessions modeled after the Dementia Friendly America toolkit. In the comparison community, the lecture was followed by a social event where participants could interact informally with the speaker and dementia outreach staff. A brief quantitative survey assessing AD knowledge was administered to participants in both groups before the education session, immediately after the lecture, and 2 months later. Results indicate that both groups improved their knowledge scores at immediate post-test. Scores for both groups declined at 2-month follow-up, but the comparison group's scores declined more precipitously than the intervention group's scores (p = 0.0.21). These results suggest that conducting focus groups and interviews following a lecture on AD may help better retain AD knowledge over time.
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Affiliation(s)
- Caroline D Bergeron
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Maisha T Robinson
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Floyd B Willis
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Monica L Albertie
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Jolita D Wainwright
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Michelle R Fudge
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Francine C Parfitt
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Julia E Crook
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - Colleen T Ball
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA
| | - John A Lucas
- Alzheimer's Disease Research Center, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA.
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8
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Casto-Boggess LD, Holland LA, Lawer-Yolar PA, Lucas JA, Guerrette JR. Microscale Quantification of the Inhibition of Neuraminidase Using Capillary Nanogel Electrophoresis. Anal Chem 2022; 94:16151-16159. [PMID: 36343965 PMCID: PMC9686991 DOI: 10.1021/acs.analchem.2c03584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Neuraminidase inhibitors modulate infections that involve sialic acids, making quantitative analyses of this inhibitory effect important for selecting and designing potential therapeutics. An automated nanogel capillary electrophoresis system is developed that integrates a 5 nL enzyme inhibition reaction in line with a 5 min separation-based assay of the enzymatic product to quantify inhibition as the half maximal inhibitory concentration (IC50) and inhibitor constant (Ki). A neuraminidase enzyme from Clostridium perfringens is non-covalently immobilized in a thermally tunable nanogel positioned in the thermally controlled region of the capillary by increasing the capillary temperature to 37 °C. Aqueous inhibitor solutions are loaded into the capillary during the nanogel patterning step to surround the enzyme zone. The capillary electrophoresis separation provides a means to distinguish the de-sialylated product, enabling the use of sialyllactose which contains the trisaccharide motif observed on serine/threonine-linked (O-linked) glycans. A universal nanogel patterning scheme is developed that does not require pre-mixing of enzymes with inhibitors when an automated capillary electrophoresis instrument is used, thus reducing the consumption of enzymes and enabling adaption of the method to different inhibitors. The universal approach is successfully applied to two classical neuraminidase inhibitors with different electrophoretic mobilities. The IC50 and Ki values obtained for N-acetyl-2,3-dehydro-2-deoxyneuraminic acid (DANA) are 13 ± 3 and 5.0 ± 0.9 μM, respectively, and 28 ± 3 and 11 ± 1 μM, respectively, for Siastatin B. These values agree with literature reports and reflect the weaker inhibition anticipated for Siastatin B in comparison to DANA.
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Affiliation(s)
- Laura D Casto-Boggess
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia26505, United States
| | - Lisa A Holland
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia26505, United States
| | - Paul A Lawer-Yolar
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia26505, United States
| | - John A Lucas
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia26505, United States
| | - Jessica R Guerrette
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia26505, United States
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9
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Lachner C, Day GS, Camsari GB, Kouri N, Ertekin-Taner N, Boeve BF, Labuzan SA, Lucas JA, Thompson EA, Siddiqui H, Crook JE, Cabrera-Rodriguez JN, Josephs KA, Petersen RC, Dickson DW, Reichard RR, Mielke MM, Knopman DS, Graff-Radford NR, Murray ME. Cancer and Vascular Comorbidity Effects on Dementia Risk and Neuropathology in the Oldest-Old. J Alzheimers Dis 2022; 90:405-417. [PMID: 36213996 PMCID: PMC9661335 DOI: 10.3233/jad-220440] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Dementia, vascular disease, and cancer increase with age, enabling complex comorbid interactions. Understanding vascular and cancer contributions to dementia risk and neuropathology in oldest-old may improve risk modification and outcomes. OBJECTIVE Investigate the contributions of vascular factors and cancer to dementia and neuropathology. METHODS Longitudinal clinicopathologic study of prospectively followed Mayo Clinic participants dying≥95 years-old who underwent autopsy. Participants were stratified by dementia status and compared according to demographics, vascular risk factors, cancer, and neuropathology. RESULTS Participants (n = 161; 83% female; 99% non-Hispanic whites)≥95 years (95-106 years-old) with/without dementia did not differ based on demographics. APOE ɛ2 frequency was higher in no dementia (20/72 [28%]) versus dementia (11/88 [12%]; p = 0.03), but APOE ɛ4 frequency did not differ. Coronary artery disease was more frequent in no dementia (31/72 [43%]) versus dementia (23/89 [26%]; p = 0.03) associated with 56% lower dementia odds (odds ratio [OR] = 0.44 [confidence interval (CI) = 0.19-0.98]; p = 0.04) and fewer neuritic/diffuse plaques. Diabetes had an 8-fold increase in dementia odds (OR = 8.42 [CI = 1.39-163]; p = 0.02). Diabetes associated with higher cerebrovascular disease (Dickson score; p = 0.05). Cancer associated with 63% lower dementia odds (OR = 0.37 [CI = 0.17-0.78]; p < 0.01) and lower Braak stage (p = 0.01). CONCLUSION Cancer exposure in the oldest-old was associated with lower odds of dementia and tangle pathology, whereas history of coronary artery disease was associated with lower odds of dementia and amyloid-β plaque pathology. History of diabetes mellitus was associated with increased odds of dementia and cerebrovascular disease pathology. Cancer-related mechanisms and vascular risk factor reduction strategies may alter dementia risk and neuropathology in oldest-old.
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Affiliation(s)
- Christian Lachner
- Departments of Neurology, Mayo Clinic, Jacksonville, FL, USA,
Departments of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Gregory S. Day
- Departments of Neurology, Mayo Clinic, Jacksonville, FL, USA
| | | | - Naomi Kouri
- Departments of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Nilüfer Ertekin-Taner
- Departments of Neurology, Mayo Clinic, Jacksonville, FL, USA,
Departments of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | | | - John A. Lucas
- Departments of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | | | - Habeeba Siddiqui
- Departments of Quantitative Health Sciences, Mayo Clinic, Jacksonville, FL, USA
| | - Julia E. Crook
- Departments of Quantitative Health Sciences, Mayo Clinic, Jacksonville, FL, USA
| | | | | | | | | | - R. Ross Reichard
- Departments of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Michelle M. Mielke
- Departments of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
| | | | | | - Melissa E. Murray
- Departments of Neuroscience, Mayo Clinic, Jacksonville, FL, USA,Correspondence to: Melissa E. Murray, PhD, Associate Professor, Translational Neuropathology Laboratory, Mayo Clinic Florida, 4500 San Pablo Road, Jacksonville, FL 32224, USA. Tel.: +1 904 953 1083; Fax: +1 904 953 7117; E-mail:
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10
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Weber NH, Delva CS, Stockenhuber SP, Grimison CC, Lucas JA, Mackie JC, Stockenhuber M, Kennedy EM. Thermal Decomposition of Perfluorooctanesulfonic Acid (PFOS) in the Presence of Water Vapor. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nathan H. Weber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | - Cameron S. Delva
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | | | | | - John A. Lucas
- Ventia Services Pty Ltd, North Sydney, New South Wales2060, Australia
| | - John C. Mackie
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | - Michael Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
| | - Eric M. Kennedy
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales2308, Australia
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11
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Johnson T, Shaffer TA, Holland LA, Veltri LM, Lucas JA, Elshamy YS, Rutto PK. A Low-Cost and Simple Demonstration of Freezing Point Depression and Colligative Properties with Common Salts and Ice Cream. J Chem Educ 2022; 99:3590-3594. [PMID: 36277356 PMCID: PMC9578014 DOI: 10.1021/acs.jchemed.2c00626] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/26/2022] [Indexed: 06/16/2023]
Abstract
A laboratory activity was developed to teach freezing point depression and colligative properties to introductory-level chemistry students. The laboratory uses food-grade reagents and is delivered in two units that can be taught in a single 2 hour session or two separate sessions. The total cost of the consumables is 1 USD. In the first part of this two-part activity, students perform measurements on the properties of five salt solutions to better know and understand freezing point depression. In the second part of the activity, students apply their knowledge and understanding of freezing point depression to make ice cream. The ice-cream-making experiment is delivered as a group activity to encourage reflection. Centering this experiment on ice cream allows students to connect properties described in chemistry to everyday life. The solutions used in the experiment are reusable and nonhazardous. The experiment can be implemented in a classroom, in a teaching laboratory, or at home.
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Affiliation(s)
- Timothy
R. Johnson
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Tyler A. Shaffer
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Lisa A. Holland
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Lindsay M. Veltri
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - John A. Lucas
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Yousef S. Elshamy
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Patrick K. Rutto
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
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Elshamy YS, Strein TG, Holland LA, Li C, DeBastiani A, Valentine SJ, Li P, Lucas JA, Shaffer TA. Nanoflow Sheath Voltage-Free Interfacing of Capillary Electrophoresis and Mass Spectrometry for the Detection of Small Molecules. Anal Chem 2022; 94:11329-11336. [PMID: 35913997 PMCID: PMC9387528 DOI: 10.1021/acs.analchem.2c02074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Coupling capillary electrophoresis (CE) to mass spectrometry (MS) is a powerful strategy to leverage a high separation efficiency with structural identification. Traditional CE-MS interfacing relies upon voltage to drive this process. Additionally, sheathless interfacing requires that the electrophoresis generates a sufficient volumetric flow to sustain the ionization process. Vibrating sharp-edge spray ionization (VSSI) is a new method to interface capillary electrophoresis to mass analyzers. In contrast to traditional interfacing, VSSI is voltage-free, making it straightforward for CE and MS. New nanoflow sheath CE-VSSI-MS is introduced in this work to reduce the reliance on the separation flow rate to facilitate the transfer of analyte to the MS. The nanoflow sheath VSSI spray ionization functions from 400 to 900 nL/min. Using the new nanoflow sheath reported here, volumetric flow rate through the separation capillary is less critical, allowing the use of a small (i.e., 20 to 25 μm) inner diameter separation capillary and enabling the use of higher separation voltages and faster analysis. Moreover, the use of a nanoflow sheath enables greater flexibility in the separation conditions. The nanoflow sheath is operated using aqueous solutions in the background electrolyte and in the sheath, demonstrating the separation can be performed under normal and reversed polarity in the presence or absence of electroosmotic flow. This includes the use of a wider pH range as well. The versatility of nanoflow sheath CE-VSSI-MS is demonstrated by separating cationic, anionic, and zwitterionic molecules under a variety of separation conditions. The detection sensitivity observed with nanoflow sheath CE-VSSI-MS is comparable to that obtained with sheathless CE-VSSI-MS as well as CE-MS separations with electrospray ionization interfacing. A bare fused silica capillary is used to separate cationic β-blockers with a near-neutral background electrolyte at concentrations ranging from 1.0 nM to 1.0 μM. Under acidic conditions, 13 amino acids are separated with normal polarity at a concentration ranging from 0.25 to 5 μM. Finally, separations of anionic compounds are demonstrated using reversed polarity under conditions of suppressed electroosmotic flow through the use of a semipermanent surface coating. With a near-neutral separation electrolyte, anionic nonsteroidal anti-inflammatory drugs are detected over a concentration range of 0.1 to 5.0 μM.
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Affiliation(s)
- Yousef S Elshamy
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Timothy G Strein
- Department of Chemistry, Bucknell University, Lewisburg, Pennsylvania 17837, United States
| | - Lisa A Holland
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Chong Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Anthony DeBastiani
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Stephen J Valentine
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Peng Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - John A Lucas
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Tyler A Shaffer
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
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Weber NH, Delva CS, Stockenhuber SP, Grimison CC, Lucas JA, Mackie JC, Stockenhuber M, Kennedy EM. Modeling and Experimental Study on the Thermal Decomposition of Perfluorooctanesulfonic Acid (PFOS) in an α-Alumina Reactor. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathan H. Weber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Cameron S. Delva
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Sebastian P. Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | | | - John A. Lucas
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - John C. Mackie
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Michael Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Eric M. Kennedy
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
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14
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Alfaya Arias T, Feo Brito F, Somoza Álvarez ML, Amo-Salas M, Lucas JA, Gutiérrez Mañero J, Urra Ardanaz JM. Allergenicity of grass pollen from polluted and non-polluted areas measured by skin prick test and basophil activation test. J Investig Allergol Clin Immunol 2022; 32:393-395. [PMID: 35029154 DOI: 10.18176/jiaci.0775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- T Alfaya Arias
- Allergy Department. Hospital General Universitario de Ciudad Real, Spain.,Allergy Department. Hospital Universitario Fundación Alcorcón, Madrid, Spain
| | - F Feo Brito
- Allergy Department. Hospital General Universitario de Ciudad Real, Spain.,Faculty of Medicine. Universidad de Castilla-La Mancha (UCLM), Spain
| | - M L Somoza Álvarez
- Allergy Department. Hospital Universitario Infanta Leonor, Madrid, Spain
| | - M Amo-Salas
- Faculty of Medicine. Mathematics department. Universidad de Castilla La Mancha (UCLM), Spain
| | - J A Lucas
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU, Spain
| | - J Gutiérrez Mañero
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU, Spain
| | - J M Urra Ardanaz
- Immunology Department, Hospital General Universitario de Ciudad Real. Spain
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Lucas JA, Robinson MT, Bergeron CD, Willis FB, Parfitt FC, Fudge MR, Wainwright JD, Graff‐Radford NR. Dementia friendly community outreach improves research participation and dementia resource utilization among African Americans. Alzheimers Dement 2021. [DOI: 10.1002/alz.052088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lachner C, Camsari GB, Ertekin‐Taner N, Thompson EA, Petersen RC, Boeve BF, Lucas JA, Reichard RR, Dickson DW, Knopman DS, Graff‐Radford NR, Murray ME. Cancer survivors have a lower frequency of dementia in the 95+ oldest‐old. Alzheimers Dement 2021. [DOI: 10.1002/alz.052376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Forsberg LK, Syrjanen JA, Ferman TJ, Boeve BF, Miyagawa T, Graff‐Radford NR, Knopman DS, Graff‐Radford J, Savica R, Savica R, Jones DT, Fields JA, Lucas JA, Allen LA, St. Louis EK, Silber MH, Petersen RC. Brief smell identification test performance in RBD, DLB and AD. Alzheimers Dement 2021. [DOI: 10.1002/alz.055830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Carrasquillo MM, Jin J, Reddy JS, Crook JE, Lincoln SJ, Ho CC, Malphrus KG, Nguyen T, Greig‐Custo MT, Lucas JA, Graff‐Radford NR, Ertekin‐Taner N. Plasma transcript profiling identifies significant differentially expressed genes and expression of quantitative trait loci in African Americans. Alzheimers Dement 2021. [DOI: 10.1002/alz.055643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Fraaije BA, Atkins SL, Santos RF, Hanley SJ, West JS, Lucas JA. Epidemiological Studies of Pan-Azole Resistant Aspergillus fumigatus Populations Sampled during Tulip Cultivation Show Clonal Expansion with Acquisition of Multi-Fungicide Resistance as Potential Driver. Microorganisms 2021; 9:2379. [PMID: 34835504 PMCID: PMC8618125 DOI: 10.3390/microorganisms9112379] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/13/2021] [Accepted: 11/14/2021] [Indexed: 11/30/2022] Open
Abstract
Pan-azole resistant isolates are found in clinical and environmental Aspergillus fumigatus (Af) populations. Azole resistance can evolve in both settings, with Af directly targeted by antifungals in patients and, in the environment, Af unintendedly exposed to fungicides used for material preservation and plant disease control. Resistance to non-azole fungicides, including methyl benzimidazole carbamates (MBCs), quinone outside inhibitors (QoIs) and succinate dehydrogenase inhibitors (SDHIs), has recently been reported. These fungicide groups are not used in medicine but can play an important role in the further spread of pan-azole resistant genotypes. We investigated the multi-fungicide resistance status and the genetic diversity of Af populations sampled from tulip field soils, tulip peel waste and flower compost heaps using fungicide sensitivity testing and a range of genotyping tools, including STRAf typing and sequencing of fungicide resistant alleles. Two major clones were present in the tulip bulb population. Comparisons with clinical isolates and literature data revealed that several common clonal lineages of TR34/L98H and TR46/Y121F/T289A strains that have expanded successfully in the environment have also acquired resistance to MBC, QoI and/or SDHI fungicides. Strains carrying multiple fungicide resistant alleles have a competitive advantage in environments where residues of multiple fungicides belonging to different modes of action are present.
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Affiliation(s)
- Bart A. Fraaije
- NIAB, Cambridge CB3 0LE, UK;
- Rothamsted Research, Harpenden AL5 2Q, UK; (S.J.H.); (J.S.W.); (J.A.L.)
| | | | - Ricardo F. Santos
- Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, SP, Brazil;
| | - Steven J. Hanley
- Rothamsted Research, Harpenden AL5 2Q, UK; (S.J.H.); (J.S.W.); (J.A.L.)
| | - Jonathan S. West
- Rothamsted Research, Harpenden AL5 2Q, UK; (S.J.H.); (J.S.W.); (J.A.L.)
| | - John A. Lucas
- Rothamsted Research, Harpenden AL5 2Q, UK; (S.J.H.); (J.S.W.); (J.A.L.)
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Weber NH, Stockenhuber SP, Delva CS, Abu Fara A, Grimison CC, Lucas JA, Mackie JC, Stockenhuber M, Kennedy EM. Kinetics of Decomposition of PFOS Relevant to Thermal Desorption Remediation of Soils. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nathan H. Weber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Sebastian P. Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Cameron S. Delva
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Ammar Abu Fara
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Charles C. Grimison
- Ventia, Rhodes Corporate Park, 1 Homebush Bay Drive, Rhodes, NSW 2138, Australia
| | - John A. Lucas
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - John C. Mackie
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Michael Stockenhuber
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Eric M. Kennedy
- Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
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Lucas JA. Using electronic health records to examine links between atopic dermatitis and obesity. Br J Dermatol 2021; 184:793. [PMID: 33523463 DOI: 10.1111/bjd.19758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 11/28/2022]
Affiliation(s)
- J A Lucas
- Department of Family Medicine, Oregon Health & Science University, Portland, OR, USA
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Deniz K, Ho CCG, Malphrus KG, Reddy JS, Nguyen T, Carnwath TP, Crook JE, Lucas JA, Graff-Radford NR, Carrasquillo MM, Ertekin-Taner N. Plasma Biomarkers of Alzheimer's Disease in African Americans. J Alzheimers Dis 2021; 79:323-334. [PMID: 33252078 PMCID: PMC7902984 DOI: 10.3233/jad-200828] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background/Objective: The aim of this study was to determine if plasma concentrations of 5 surrogate markers of Alzheimer’s disease (AD) pathology and neuroinflammation are associated with disease status in African Americans. Methods: We evaluated 321 African Americans (159 AD, 162 controls) from the Florida Consortium for African-American Alzheimer’s Disease Studies (FCA3DS). Five plasma proteins reflecting AD neuropathology or inflammation (Aβ42, tau, IL6, IL10, TNFα) were tested for associations with AD, age, sex, APOE and MAPT genotypes, and for pairwise correlations. Results: Plasma tau levels were higher in AD when adjusted for biological and technical covariates. APOEɛ4 was associated with lower plasma Aβ42 and tau levels. Older age was associated with higher plasma Aβ42, tau, and TNFα. Females had lower IL10 levels. Inflammatory proteins had strong pairwise correlations amongst themselves and with Aβ42. Conclusion: We identified effects of demographic and genetic variants on five potential plasma biomarkers in African Americans. Plasma inflammatory biomarkers and Aβ42 may reflect correlated pathologies and elevated plasma tau may be a biomarker of AD in this population.
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Affiliation(s)
- Kaancan Deniz
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL, USA
| | | | | | - Joseph S Reddy
- Mayo Clinic, Department of Health Science Research, Jacksonville, FL, USA
| | - Thuy Nguyen
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL, USA
| | - Troy P Carnwath
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL, USA
| | - Julia E Crook
- Mayo Clinic, Department of Health Science Research, Jacksonville, FL, USA
| | - John A Lucas
- Mayo Clinic, Department of Psychiatry and Psychology, Jacksonville, FL, USA
| | | | | | - Nilüfer Ertekin-Taner
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL, USA.,Mayo Clinic, Department of Neurology, Jacksonville, FL, USA
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Lucas JA, Robinson MT, Bergeron CD, Willis FB, Parfitt FC, Graff‐Radford NR. Promoting sustainable dementia education in African American communities. Alzheimers Dement 2020. [DOI: 10.1002/alz.040369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Verweij PE, Lucas JA, Arendrup MC, Bowyer P, Brinkmann AJ, Denning DW, Dyer PS, Fisher MC, Geenen PL, Gisi U, Hermann D, Hoogendijk A, Kiers E, Lagrou K, Melchers WJ, Rhodes J, Rietveld AG, Schoustra SE, Stenzel K, Zwaan BJ, Fraaije BA. The one health problem of azole resistance in Aspergillus fumigatus: current insights and future research agenda. FUNGAL BIOL REV 2020. [DOI: 10.1016/j.fbr.2020.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Strickland SL, Morel H, Prusinski C, Allen M, Patel TA, Carrasquillo MM, Conway OJ, Lincoln SJ, Reddy JS, Nguyen T, Malphrus KG, Soto AI, Walton RL, Crook JE, Murray ME, Boeve BF, Petersen RC, Lucas JA, Ferman TJ, Uitti RJ, Wszolek ZK, Ross OA, Graff-Radford NR, Dickson DW, Ertekin-Taner N. Association of ABI3 and PLCG2 missense variants with disease risk and neuropathology in Lewy body disease and progressive supranuclear palsy. Acta Neuropathol Commun 2020; 8:172. [PMID: 33092647 PMCID: PMC7579984 DOI: 10.1186/s40478-020-01050-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 10/02/2020] [Indexed: 12/20/2022] Open
Abstract
Missense variants ABI3_rs616338-T and PLCG2_rs72824905-G were previously associated with elevated or reduced risk of Alzheimer's disease (AD), respectively. Despite reports of associations with other neurodegenerative diseases, there are few studies of these variants in purely neuropathologically diagnosed cohorts. Further, the effect of these mutations on neurodegenerative disease pathologies is unknown. In this study, we tested the effects of ABI3_rs616338-T and PLCG2_rs72824905-G on disease risk in autopsy cohorts comprised of 973 patients diagnosed neuropathologically with Lewy body disease (LBD-NP) and 1040 with progressive supranuclear palsy (PSP), compared to 3351 controls. LBD-NP patients were further categorized as high, intermediate and low likelihood of clinical dementia with Lewy bodies (DLB-CL) based on DLB Consortium criteria. We also tested for association with both Braak neurofibrillary tau tangle (nTotal = 2008, nPSP = 1037, nLBD-NP = 971) and Thal phase amyloid plaque scores (nTotal = 1786, nPSP = 1018, nLBD-NP = 768). Additionally, 841 PSP patients had quantitative tau neuropathology measures that were assessed for genetic associations. There was no statistically significant association with disease risk for either LBD-NP or PSP in our study. LBD intermediate category disease risk was significantly associated with ABI3_rs616338-T (OR = 2.65, 95% CI 1.46-4.83, p = 0.001). PLCG2_rs72824905-G was associated with lower Braak stage (ß = - 0.822, 95% CI - 1.439 to - 0.204, p = 0.009). This effect was more pronounced in the PSP (ß = - 0.995, 95% CI - 1.773 to - 0.218, p = 0.012) than LBD-NP patients (ß = - 0.292, 95% CI - 1.283 to 0.698, p = 0.563). PLCG2_rs72824905-G also showed association with reduced quantitative tau pathology for each lesion type and overall tau burden in PSP (ß = - 0.638, 95% CI - 1.139 to - 0.136, p = 0.013). These findings support a role for PLCG2_rs72824905-G in suppressing tau neuropathology. ABI3_rs616338-T may influence disease risk specifically in the LBD-NP intermediate category comprised of patients with diffuse neocortical or limbic LB, concurrently with moderate or high AD neuropathology, respectively. Our study provides a potential mechanism of action for the missense PLCG2 variant and suggests a differential disease risk effect for ABI3 in a distinct LBD-NP neuropathologic category.
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Weber NH, Stockenhuber SP, Benhelal E, Grimison CC, Lucas JA, Mackie JC, Stockenhuber M, Kennedy EM. Products and mechanism of thermal decomposition of chlorpyrifos under inert and oxidative conditions. Environ Sci Process Impacts 2020; 22:2084-2094. [PMID: 32909592 DOI: 10.1039/d0em00295j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chlorpyrifos (CPF) is a widely used pesticide; however, limited experimental work has been completed on its thermal decomposition. CPF is known to decompose into 3,5,6-trichloro-2-pyridinol (TCpyol) together with ethylene and HOPOS. Under oxidative conditions TCpyol can decompose into the dioxin-like 2,3,7,8-tetrachloro-[1,4]-dioxinodipyridine (TCDDPy). With CPF on the cusp of being banned in several jurisdictions worldwide, the question might arise as to how to safely eliminate large stockpiles of this pesticide. Thermal methods such as incineration or thermal desorption of pesticide-contaminated soils are often employed. To assess the safety of thermal methods, information about the toxicants arising from thermal treatment is essential. The present flow reactor study reports the products detected under inert and oxidative conditions from the decomposition of CPF representative of thermal treatments and of wildfires in CPF-contaminated vegetation. Ethylene and TCpyol are the initial products formed at temperatures between 550 and 650 °C, although the detection of HOPOS as a reaction product has proven to be elusive. During pyrolysis of CPF in an inert gas, the dominant sulfur-containing product detected from CPF is carbon disulfide. Quantum chemical analysis reveals that ethylene and HOPOS undergo a facile reaction to form thiirane (c-C2H4S) which subsequently undergoes ring opening reactions to form precursors of CS2. At elevated temperatures (>650 °C), TCpyol undergoes both decarbonylation and dehydroxylation reactions together with decomposition of its primary product, TCpyol. A substantial number of toxicants is observed, including HCN and several nitriles, including cyanogen. No CS2 is observed under oxidative conditions - sulfur dioxide is the fate of S in oxidation of CPF, and quantum chemical studies show that SO2 formation is initiated by the reaction between HOPOS and O2. The range of toxicants produced in thermal decomposition of CPF is summarised.
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Affiliation(s)
- Nathan H Weber
- Faculty of Engineering and Built Environment, Discipline of Chemical Engineering, School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia.
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Martin-Rivilla H, Garcia-Villaraco A, Ramos-Solano B, Gutierrez-Manero FJ, Lucas JA. Improving Flavonoid Metabolism in Blackberry Leaves and Plant Fitness by Using the Bioeffector Pseudomonas fluorescens N 21.4 and Its Metabolic Elicitors: A Biotechnological Approach for a More Sustainable Crop. J Agric Food Chem 2020; 68:6170-6180. [PMID: 32383861 DOI: 10.1021/acs.jafc.0c01169] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Beneficial rhizobacterium Pseudomonas fluorescens N 21.4 and its metabolic elicitors inoculated to cultivars of blackberry (Rubus spp. Var. Loch Ness) reinforced the plants' immune system and improved their fitness by increasing photosynthesis, decreasing oxidative stress, and activating pathogenesis-related proteins. They also triggered the leaves' flavonoid metabolism, enhancing the accumulation of beneficial phenolic compounds such as kaempferols and quercetin derivatives. The elicitation of leaf secondary metabolism allows one to take advantage of the blackberry leaves (a current crop waste), following the premises of the circular economy, to isolate and obtain high added value compounds. The results of this work suggest the use of N 21.4 and/or its metabolic elicitors as plant inoculants as an effective and economically and environmentally friendly agronomic alternative practice in the exploitation of blackberry crops to obtain plants with a better immune system and to revalorize the leaf pruning as a potential source of polyphenols.
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Affiliation(s)
- H Martin-Rivilla
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, 28668 Boadilla del Monte, Spain
| | - A Garcia-Villaraco
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, 28668 Boadilla del Monte, Spain
| | - B Ramos-Solano
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, 28668 Boadilla del Monte, Spain
| | - F J Gutierrez-Manero
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, 28668 Boadilla del Monte, Spain
| | - J A Lucas
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, 28668 Boadilla del Monte, Spain
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Martin-Rivilla H, Garcia-Villaraco A, Ramos-Solano B, Gutierrez-Mañero FJ, Lucas JA. Extracts from cultures of Pseudomonas fluorescens induce defensive patterns of gene expression and enzyme activity while depressing visible injury and reactive oxygen species in Arabidopsis thaliana challenged with pathogenic Pseudomonas syringae. AoB Plants 2019; 11:plz049. [PMID: 31632627 PMCID: PMC6794073 DOI: 10.1093/aobpla/plz049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
We evaluated the ability of metabolic elicitors extracted from Pseudomonas fluorescens N21.4 to induce systemic resistance (ISR) in Arabidopsis thaliana against the pathogen Pseudomonas syringae DC3000. Metabolic elicitors were obtained from bacteria-free culture medium with n-hexane, ethyl acetate and n-butanol in three consecutive extractions. Each extract showed plant protection activity. The n-hexane fraction was the most effective and was used to study the signal transduction pathways involved by evaluating expression of marker genes of the salicylic acid (SA) signalling pathway (NPR1, PR1, ICS and PR2) and the jasmonic acid/ethylene (JA/ET) signalling pathway (PDF1, MYC2, LOX2 and PR3). In addition, the level of oxidative stress was tested by determining the activity of enzymes related to the ascorbate-glutathione cycle. N-hexane extracts stimulated both pathways based on overexpression of ICS, PR1, PR2, PDF1 and LOX2 genes. In addition, activity of the pathogenesis-related proteins glucanase (PR2) and chitinase (PR3), lipoxygenase and polyphenol oxidase was enhanced together with an increased capacity to remove reactive oxygen species (ROS). This was associated with less oxidative stress as indicated by a decrease in malondialdehyde (MDA), suggesting a causative link between defensive metabolism against P. syringae and ROS scavenging.
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Affiliation(s)
- H Martin-Rivilla
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, Boadilla del Monte, Spain
| | - A Garcia-Villaraco
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, Boadilla del Monte, Spain
| | - B Ramos-Solano
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, Boadilla del Monte, Spain
| | - F J Gutierrez-Mañero
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, Boadilla del Monte, Spain
| | - J A Lucas
- Plant Physiology, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo-CEU Universities, Boadilla del Monte, Spain
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Bergeron CD, Robinson MT, Willis FB, Albertie ML, Wainwright JD, Fudge MR, Parfitt FC, Lucas JA. O1‐05‐05: PROMOTING DEMENTIA AWARENESS IN AFRICAN AMERICAN COMMUNITIES: IMPACT OF THE DEMENTIA CARING COMMUNITY OUTREACH MODEL. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.4545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Santos OA, Pedraza O, Lucas JA, Duara R, Greig-Custo MT, Hanna Al-Shaikh FS, Liesinger AM, Bieniek KF, Hinkle KM, Lesser ER, Crook JE, Carrasquillo MM, Ross OA, Ertekin-Taner N, Graff-Radford NR, Dickson DW, Murray ME. Ethnoracial differences in Alzheimer's disease from the FLorida Autopsied Multi-Ethnic (FLAME) cohort. Alzheimers Dement 2019; 15:635-643. [PMID: 30792090 PMCID: PMC6511501 DOI: 10.1016/j.jalz.2018.12.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 11/13/2018] [Accepted: 12/02/2018] [Indexed: 12/28/2022]
Abstract
Introduction: Our primary goal was to examine demographic and clinicopathologic differences across an ethnoracially diverse autopsy-confirmed cohort of Alzheimer’s disease cases. Methods: A retrospective study was conducted in the Florida Autopsied Multi-Ethnic cohort on 1625 Alzheimer’s disease cases, including decedents who self-reported as Hispanic/Latino (n = 67), black/African American (n = 19), and white/European American (n = 1539). Results: Hispanic decedents had a higher frequency of family history of cognitive impairment (58%), an earlier age at onset (median age of 70 years), longer disease duration (median of 12 years), and lower MMSE proximal to death (median of 4 points) compared with the other ethnoracial groups. Black decedents had a lower Braak tangle stage (stage V) and higher frequency of coexisting hippocampal sclerosis (21%); however, only hippocampal sclerosis differences survived adjustment for sex, age at onset, and disease duration. Neither Thal amyloid phase nor coexisting Lewy body disease differed across ethnoracial groups. Discussion: Despite a smaller sample size, Hispanics demonstrated longer disease duration with Alzheimer’s disease, but not greater lifespan. Neuropathologic differences across ethnoracial groups supported differences in tau pathology distribution and coexisting hippocampal sclerosis, which may impact biomarker studies.
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Affiliation(s)
- Octavio A Santos
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Otto Pedraza
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - John A Lucas
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Ranjan Duara
- Department of Neurology, Wien Center for Alzheimer's Disease and Memory Disorders, Mount Sinai Medical Center, Miami Beach, FL, USA; University of Florida College of Medicine, Gainesville, FL, USA
| | - Maria T Greig-Custo
- Department of Neurology, Wien Center for Alzheimer's Disease and Memory Disorders, Mount Sinai Medical Center, Miami Beach, FL, USA
| | | | | | - Kevin F Bieniek
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Kelly M Hinkle
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Julia E Crook
- Health Sciences Research, Mayo Clinic, Jacksonville, FL, USA
| | | | - Owen A Ross
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Nilüfer Ertekin-Taner
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA; Department of Neurology, Mayo Clinic, Jacksonville, FL, USA
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Conway OJ, Carrasquillo MM, Wang X, Bredenberg JM, Reddy JS, Strickland SL, Younkin CS, Burgess JD, Allen M, Lincoln SJ, Nguyen T, Malphrus KG, Soto AI, Walton RL, Boeve BF, Petersen RC, Lucas JA, Ferman TJ, Cheshire WP, van Gerpen JA, Uitti RJ, Wszolek ZK, Ross OA, Dickson DW, Graff-Radford NR, Ertekin-Taner N. ABI3 and PLCG2 missense variants as risk factors for neurodegenerative diseases in Caucasians and African Americans. Mol Neurodegener 2018; 13:53. [PMID: 30326945 PMCID: PMC6190665 DOI: 10.1186/s13024-018-0289-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/04/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Rare coding variants ABI3_rs616338-T and PLCG2_rs72824905-G were identified as risk or protective factors, respectively, for Alzheimer's disease (AD). METHODS We tested the association of these variants with five neurodegenerative diseases in Caucasian case-control cohorts: 2742 AD, 231 progressive supranuclear palsy (PSP), 838 Parkinson's disease (PD), 306 dementia with Lewy bodies (DLB) and 150 multiple system atrophy (MSA) vs. 3351 controls; and in an African-American AD case-control cohort (181 AD, 331 controls). 1479 AD and 1491 controls were non-overlapping with a prior report. RESULTS Using Fisher's exact test, there was significant association of both ABI3_rs616338-T (OR = 1.41, p = 0.044) and PLCG2_rs72824905-G (OR = 0.56, p = 0.008) with AD. These OR estimates were maintained in the non-overlapping replication AD-control analysis, albeit at reduced significance (ABI3_rs616338-T OR = 1.44, p = 0.12; PLCG2_rs72824905-G OR = 0.66, p = 0.19). None of the other cohorts showed significant associations that were concordant with those for AD, although the DLB cohort had suggestive findings (Fisher's test: ABI3_rs616338-T OR = 1.79, p = 0.097; PLCG2_rs72824905-G OR = 0.32, p = 0.124). PLCG2_rs72824905-G showed suggestive association with pathologically-confirmed MSA (OR = 2.39, p = 0.050) and PSP (OR = 1.97, p = 0.061), although in the opposite direction of that for AD. We assessed RNA sequencing data from 238 temporal cortex (TCX) and 224 cerebellum (CER) samples from AD, PSP and control patients and identified co-expression networks, enriched in microglial genes and immune response GO terms, and which harbor PLCG2 and/or ABI3. These networks had higher expression in AD, but not in PSP TCX, compared to controls. This expression association did not survive adjustment for brain cell type population changes. CONCLUSIONS We validated the associations previously reported with ABI3_rs616338-T and PLCG2_rs72824905-G in a Caucasian AD case-control cohort, and observed a similar direction of effect in DLB. Conversely, PLCG2_rs72824905-G showed suggestive associations with PSP and MSA in the opposite direction. We identified microglial gene-enriched co-expression networks with significantly higher levels in AD TCX, but not in PSP, a primary tauopathy. This co-expression network association appears to be driven by microglial cell population changes in a brain region affected by AD pathology. Although these findings require replication in larger cohorts, they suggest distinct effects of the microglial genes, ABI3 and PLCG2 in neurodegenerative diseases that harbor significant vs. low/no amyloid ß pathology.
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Affiliation(s)
- Olivia J Conway
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | | | - Xue Wang
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Jenny M Bredenberg
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Joseph S Reddy
- Department of Health Sciences Research, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | | | - Curtis S Younkin
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Jeremy D Burgess
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Mariet Allen
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Sarah J Lincoln
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Thuy Nguyen
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Kimberly G Malphrus
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Alexandra I Soto
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Ronald L Walton
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Bradley F Boeve
- Department of Neurology, Mayo Clinic Minnesota, Rochester, MN, 55905, USA
| | - Ronald C Petersen
- Department of Neurology, Mayo Clinic Minnesota, Rochester, MN, 55905, USA
| | - John A Lucas
- Department of Psychiatry and Psychology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Tanis J Ferman
- Department of Psychiatry and Psychology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - William P Cheshire
- Department of Neurology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Jay A van Gerpen
- Department of Neurology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Ryan J Uitti
- Department of Neurology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Zbigniew K Wszolek
- Department of Neurology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Owen A Ross
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA
| | | | - Nilüfer Ertekin-Taner
- Department of Neuroscience, Mayo Clinic Florida, Jacksonville, FL, 32224, USA. .,Department of Neurology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA.
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Lucas JA, Moonie S, Hogan MB, Evans WN. Efficacy of an exercise intervention among children with comorbid asthma and obesity. Public Health 2018; 159:123-128. [PMID: 29571538 DOI: 10.1016/j.puhe.2018.02.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Children with comorbid asthma and obesity present with more severe and harder-to-control disease than asthmatic children at healthy weight. Weight loss has been shown to improve asthma symptoms, yet physical activity may be difficult due to exercise-induced bronchospasm. Children with asthma have lower exercise rates than non-asthmatics. The objective of this study was to retrospectively evaluate attrition rates and program outcome measures (Body Mass Index [BMI] and maximum oxygen consumption [VO2max]) among asthmatic and non-asthmatic participants. STUDY DESIGN Clinical data were collected from the Healthy Hearts Program, a 12-week nutrition and activity intervention program for children who are overweight, obese, or at risk for heart disease and other conditions, and used for the study. METHODS Intervention data and demographics were obtained from medical records at the Children's Heart Center Nevada. Descriptive statistics, paired t-tests, Cox regression analysis, and analysis of covariance were conducted. RESULTS The mean age of this population (N = 232) was 11 years; 54% were male, 64% were Hispanic, and 37% had asthma. Median time in the program was 9 weeks, and 58% of the population completed the program. Unadjusted analyses showed significant BMI decreases in asthmatic (P = 0.002) and non-asthmatic (P = 0.001) participants and increases in cardiorespiratory function for asthmatic males and females (P = 0.003, P = 0.004) and non-asthmatic males and females (P < 0.001 for both). Asthmatic and non-asthmatic children both had improved exercise intensity (P = 0.033, P < 0.001). CONCLUSIONS This program is both beneficial and practical for obese children with asthma for losing weight and improving cardiorespiratory function.
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Affiliation(s)
- J A Lucas
- School of Community Health Sciences, University of Nevada, Las Vegas, 4505 Maryland Parkway Box 453064, Las Vegas, NV 89154-3064, USA.
| | - S Moonie
- School of Community Health Sciences, University of Nevada, Las Vegas, 4505 Maryland Parkway Box 453064, Las Vegas, NV 89154-3064, USA.
| | - M B Hogan
- University of Nevada School of Medicine, Department of Pediatrics, 1524 Pinto Lane, 3rd Floor, Las Vegas, NV 89106, USA.
| | - W N Evans
- Children's Heart Center Nevada, Department of Pediatric Cardiology, Sunrise Hospital and Medical Center, 3006 S. Maryland Parkway, Suite 690, Las Vegas, NV 89109, USA.
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Affiliation(s)
- John A Lucas
- Sports Medicine Institute, Spartanburg Regional Healthcare System, Spartanburg, South Carolina, USA
| | - Justin B Moore
- Department of Family & Community Medicine, Wake Forest School of Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA.,Department of Epidemiology & Prevention, Wake Forest School of Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Stephen Davis
- Department of Family & Community Medicine, Wake Forest School of Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Johnell O Brooks
- Department of Automotive Engineering, Clemson University International Center for Automotive Research, Greenville, South Carolina, USA
| | - Christopher Miles
- Department of Family & Community Medicine, Wake Forest School of Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
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Petito GT, Wharen RE, Feyissa AM, Grewal SS, Lucas JA, Tatum WO. The impact of stereotactic laser ablation at a typical epilepsy center. Epilepsy Behav 2018; 78:37-44. [PMID: 29172137 DOI: 10.1016/j.yebeh.2017.10.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/29/2017] [Accepted: 10/27/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE Stereotactic laser ablation (SLA) is a novel form of epilepsy surgery for patients with drug-resistant focal epilepsy. We evaluated one hundred consecutive surgeries performed for patients with epilepsy to address the impact of SLA on our therapeutic approach, as well as patient outcomes. METHODS A retrospective, single center analysis of the last one hundred neurosurgeries for epilepsy was performed from 2013 to 2015. Demographics, surgical procedures, and postoperative measures were assessed up to 5years to compare the effect of SLA on outcome. Confidence intervals (CI) and comparative tests of proportions compared outcomes for SLA and resective surgery. Procedural categorical comparison used Chi-square and Kaplan-Meier curves. Student t-test was utilized for single variables such as age at procedure and seizure onset. RESULTS One hundred surgeries for epilepsy yielded thirty-three SLAs and twenty-one resections with a mean of 21.7-month and 21.3-month follow-up, respectively. The temporal lobe was the most common target for SLA (92.6%) and resection (75%). A discrete lesion was present on brain magnetic resonance imaging (MRI) in 27/32 (84.4%) of SLA patients compared with 7/20 (35%) of resection patients with a normal MRI. Overall, 55-60% of patients became seizure-free (SF). Four of five patients with initial failure to SLA became SF with subsequent resection surgery. Complications were more frequent with resection although SF outcomes did not differ (Chi square; p=0.79). Stereotactic laser ablation patients were older than those with resections (47.0years vs. 35.4years, p=0.001). The mean length of hospitalization prior to discharge was shorter for SLA (1.18days) compared with open resection (3.43days; SD: 3.16 days) (p=0.0002). CONCLUSION We now use SLA as a first line therapy at our center in patients with lesional temporal lobe epilepsy (TLE) before resection. Seizure-free outcome with SLA and resection was similar but with a shorter length of stay. Long-term follow-up is recommended to determine sustained SF status from SLA.
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Affiliation(s)
- Gabrielle T Petito
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Robert E Wharen
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Anteneh M Feyissa
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Sanjeet S Grewal
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - John A Lucas
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - William O Tatum
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA.
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Greenway MRF, Lucas JA, Feyissa AM, Grewal S, Wharen RE, Tatum WO. Neuropsychological outcomes following stereotactic laser amygdalohippocampectomy. Epilepsy Behav 2017; 75:50-55. [PMID: 28841472 DOI: 10.1016/j.yebeh.2017.07.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/25/2017] [Accepted: 07/17/2017] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The objective was to analyze neuropsychological testing data from 15 patients before and after stereotactic laser ablation surgery for temporal lobe epilepsy and to describe the seizure outcomes after stereotactic laser ablation surgery. METHODS A retrospective review of 15 patients who underwent stereotactic laser ablation and who also underwent neuropsychological testing before and after surgery was performed. Verbal and visual memory was assessed in all 15 patients using California Verbal Learning Test and Wechsler Memory Scale IV. Naming was assessed in 9 of 15 patients using the Boston Naming Test. Statistical analysis was performed to determine clinically significant changes using previously validated reliable change indices and proprietary Advanced Clinical Solutions software. Seizure outcome data were evaluated using Engel classification. RESULTS Postsurgery neuropsychological evaluation demonstrated that all 15 patients experienced at least 1 clinically significant decline in either verbal or visual memory. Ten patients in this series, including five with dominant-hemisphere surgery, demonstrated decline in delayed memory for narrative information (Logical Memory II). By contrast, the Boston Naming Test demonstrated more favorable results after surgery. Two of nine patients demonstrated a clinically significant increase in naming ability, and only one of nine patients demonstrated a clinically significant decline in naming ability. With at least 6months of follow-up after surgery, 33% reported seizure freedom. CONCLUSION Stereotactic laser ablation can result in clinically significant and meaningful decline in verbal and visual memory when comparing patients to their own presurgical baseline. Naming ability, conversely, is much less likely to be impacted by stereotactic laser ablation and may improve after the procedure.
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Affiliation(s)
- Melanie R F Greenway
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA.
| | - John A Lucas
- Department of Psychology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Anteneh M Feyissa
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Sanjeet Grewal
- Department of Neurosurgery, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Robert E Wharen
- Department of Neurosurgery, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - William O Tatum
- Department of Neurology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
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Affiliation(s)
- S M Kurtz
- Parke, Davis Research Laboratories, Ann Arbor, Michigan, USA
| | - J E Fitzgerald
- Parke, Davis Research Laboratories, Ann Arbor, Michigan, USA
| | - R A Fisken
- Parke, Davis Research Laboratories, Ann Arbor, Michigan, USA
| | - J L Schardein
- Parke, Davis Research Laboratories, Ann Arbor, Michigan, USA
| | - T H Reutner
- Parke, Davis Research Laboratories, Ann Arbor, Michigan, USA
| | - J A Lucas
- Parke, Davis Research Laboratories, Ann Arbor, Michigan, USA
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Dredla BK, Lucas JA, Wharen RE, Tatum WO. Neurocognitive outcome following stereotactic laser ablation in two patients with MRI-/PET+ mTLE. Epilepsy Behav 2016; 56:44-7. [PMID: 26828690 DOI: 10.1016/j.yebeh.2015.12.047] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/29/2015] [Accepted: 12/30/2015] [Indexed: 11/17/2022]
Abstract
The most effective treatment for drug-resistant seizures associated with mesial temporal lobe epilepsy (mTLE) is surgical resection. Neurocognitive sequelae may occur and are especially likely to occur after left temporal lobectomy. Smaller resections observed with selective amygdalohippocampectomy have resulted in a more favorable neurocognitive outcome in some cases when compared to standard anterior temporal lobectomy. Specifically, MRI-guided interstitial laser thermal ablation (MRgLITT) uses a superselective stereotactic amygdalohippocampotomy that has been reported to preserve object recognition and naming abilities compared with standard temporal lobe resection. We report two patients with drug-resistant mTLE and a normal high-resolution 3-T brain MRI who underwent neuropsychological assessment pre- and postleft temporal MRgLITT. Both patients demonstrated preserved visual naming ability following surgery. Semantic verbal fluency declined after surgery, but the magnitude of decline did not reach the statistical threshold for reliable change. Both patients demonstrated statistically significant and clinically meaningful declines in memory, but abilities across other nonmemory neurocognitive domains (i.e., visuospatial ability, attention) were preserved.
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Affiliation(s)
- Brynn K Dredla
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - John A Lucas
- Department of Psychology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Rober E Wharen
- Department of Neurosurgery, Mayo Clinic, Jacksonville, FL 32224, USA
| | - William O Tatum
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA.
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Gendron TF, van Blitterswijk M, Bieniek KF, Daughrity LM, Jiang J, Rush BK, Pedraza O, Lucas JA, Murray ME, Desaro P, Robertson A, Overstreet K, Thomas CS, Crook JE, Castanedes-Casey M, Rousseau L, Josephs KA, Parisi JE, Knopman DS, Petersen RC, Boeve BF, Graff-Radford NR, Rademakers R, Lagier-Tourenne C, Edbauer D, Cleveland DW, Dickson DW, Petrucelli L, Boylan KB. Cerebellar c9RAN proteins associate with clinical and neuropathological characteristics of C9ORF72 repeat expansion carriers. Acta Neuropathol 2015; 130:559-73. [PMID: 26350237 PMCID: PMC4575385 DOI: 10.1007/s00401-015-1474-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [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: 07/20/2015] [Revised: 08/29/2015] [Accepted: 08/30/2015] [Indexed: 12/12/2022]
Abstract
Clinical and neuropathological characteristics associated with G4C2 repeat expansions in chromosome 9 open reading frame 72 (C9ORF72), the most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia, are highly variable. To gain insight on the molecular basis for the heterogeneity among C9ORF72 mutation carriers, we evaluated associations between features of disease and levels of two abundantly expressed “c9RAN proteins” produced by repeat-associated non-ATG (RAN) translation of the expanded repeat. For these studies, we took a departure from traditional immunohistochemical approaches and instead employed immunoassays to quantitatively measure poly(GP) and poly(GA) levels in cerebellum, frontal cortex, motor cortex, and/or hippocampus from 55 C9ORF72 mutation carriers [12 patients with ALS, 24 with frontotemporal lobar degeneration (FTLD) and 19 with FTLD with motor neuron disease (FTLD-MND)]. We additionally investigated associations between levels of poly(GP) or poly(GA) and cognitive impairment in 15 C9ORF72 ALS patients for whom neuropsychological data were available. Among the neuroanatomical regions investigated, poly(GP) levels were highest in the cerebellum. In this same region, associations between poly(GP) and both neuropathological and clinical features were detected. Specifically, cerebellar poly(GP) levels were significantly lower in patients with ALS compared to patients with FTLD or FTLD-MND. Furthermore, cerebellar poly(GP) associated with cognitive score in our cohort of 15 patients. In the cerebellum, poly(GA) levels similarly trended lower in the ALS subgroup compared to FTLD or FTLD-MND subgroups, but no association between cerebellar poly(GA) and cognitive score was detected. Both cerebellar poly(GP) and poly(GA) associated with C9ORF72 variant 3 mRNA expression, but not variant 1 expression, repeat size, disease onset, or survival after onset. Overall, these data indicate that cerebellar abnormalities, as evidenced by poly(GP) accumulation, associate with neuropathological and clinical phenotypes, in particular cognitive impairment, of C9ORF72 mutation carriers.
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Affiliation(s)
- Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - Kevin F Bieniek
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Mayo Graduate School, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Jie Jiang
- Ludwig Institute, University of California at San Diego, La Jolla, CA, 92093, USA
| | - Beth K Rush
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Otto Pedraza
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - John A Lucas
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Melissa E Murray
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Pamela Desaro
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Amelia Robertson
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Karen Overstreet
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Colleen S Thomas
- Section of Biostatistics, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Julia E Crook
- Section of Biostatistics, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - Linda Rousseau
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Keith A Josephs
- Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Joseph E Parisi
- Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA
| | - David S Knopman
- Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Bradley F Boeve
- Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Rosa Rademakers
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Clotilde Lagier-Tourenne
- Ludwig Institute, University of California at San Diego, La Jolla, CA, 92093, USA
- Department of Neurosciences, University of California at San Diego, La Jolla, CA, 92093, USA
| | - Dieter Edbauer
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Institute for Metabolic Biochemistry, Ludwig-Maximilians University Munich, Munich, Germany
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
| | - Don W Cleveland
- Ludwig Institute, University of California at San Diego, La Jolla, CA, 92093, USA
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA, 92093, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - Kevin B Boylan
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA.
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García-Cristobal J, García-Villaraco A, Ramos B, Gutierrez-Mañero J, Lucas JA. Priming of pathogenesis related-proteins and enzymes related to oxidative stress by plant growth promoting rhizobacteria on rice plants upon abiotic and biotic stress challenge. J Plant Physiol 2015; 188:72-79. [PMID: 26439659 DOI: 10.1016/j.jplph.2015.09.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 09/03/2015] [Accepted: 09/03/2015] [Indexed: 06/05/2023]
Abstract
Two plant growth promoting rhizobacteria (PGPR) were tested to evaluate their capacity to prime rice seedlings against stress challenge (salt and Xanthomonas campestris infection). As is accepted that plants respond to biotic and abiotic stresses by generation of reactive oxygen species (ROS), enzyme activities related to oxidative stress (ascorbate peroxidase (APX, EC 1.11.1.11), guaiacol peroxidase (GPX, EC 1.11.1.7), glutathione reductase (GR, EC 1.6.4.2) and superoxide dismutase (SOD, EC 1.15.1.1)) as well as the pathogenesis-related proteins (PRs) ß-1,3-glucanase (PR2, EC 3.2.1.6) and chitinase (PR3, EC 3.2.1.14) were measured at 3 time points after stress challenge. In addition, photosynthetic parameters related with fluorescence emission of photosystem II (F0, Fv/Fm, ΦPSII and NPQ) were also measured although they were barely affected. Both strains were able to protect rice seedlings against salt stress. AMG272 reduced the salt symptoms over 47% with regard to control, and L81 over 90%. Upon pathogen challenge, 90% protection was achieved by both strains. All enzyme activities related to oxidative stress were modified by the two PGPR, especially APX and SOD upon salinity stress challenge, and APX and GR upon pathogen presence. Both bacteria induced chitinase activity 24 and 48 h after pathogen inoculation, and L81 induced ß-1,3-Glucanase activity 48 h after pathogen inoculation, evidencing the priming effect. These results indicate that these strains could be used as bio-fortifying agents in biotechnological inoculants in order to reduce the effects of different stresses, and indirectly reduce the use of agrochemicals.
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Affiliation(s)
- J García-Cristobal
- Universidad San Pablo CEU, Dept. Pharmaceutical Science & Health, Facultad Farmacia, Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain
| | - A García-Villaraco
- Universidad San Pablo CEU, Dept. Pharmaceutical Science & Health, Facultad Farmacia, Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain
| | - B Ramos
- Universidad San Pablo CEU, Dept. Pharmaceutical Science & Health, Facultad Farmacia, Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain
| | - J Gutierrez-Mañero
- Universidad San Pablo CEU, Dept. Pharmaceutical Science & Health, Facultad Farmacia, Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain
| | - J A Lucas
- Universidad San Pablo CEU, Dept. Pharmaceutical Science & Health, Facultad Farmacia, Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain.
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Abstract
Fungicides are widely used in developed agricultural systems to control disease and safeguard crop yield and quality. Over time, however, resistance to many of the most effective fungicides has emerged and spread in pathogen populations, compromising disease control. This review describes the development of resistance using case histories based on four important diseases of temperate cereal crops: eyespot (Oculimacula yallundae and Oculimacula acuformis), Septoria tritici blotch (Zymoseptoria tritici), powdery mildew (Blumeria graminis), and Fusarium ear blight (a complex of Fusarium and Microdochium spp). The sequential emergence of variant genotypes of these pathogens with reduced sensitivity to the most active single-site fungicides, methyl benzimidazole carbamates, demethylation inhibitors, quinone outside inhibitors, and succinate dehydrogenase inhibitors illustrates an ongoing evolutionary process in response to the introduction and use of different chemical classes. Analysis of the molecular mechanisms and genetic basis of resistance has provided more rapid and precise methods for detecting and monitoring the incidence of resistance in field populations, but when or where resistance will occur remains difficult to predict. The extent to which the predictability of resistance evolution can be improved by laboratory mutagenesis studies and fitness measurements, comparison between pathogens, and reconstruction of evolutionary pathways is discussed. Risk models based on fungal life cycles, fungicide properties, and exposure to the fungicide are now being refined to take account of additional traits associated with the rate of pathogen evolution. Experimental data on the selection of specific mutations or resistant genotypes in pathogen populations in response to fungicide treatments can be used in models evaluating the most effective strategies for reducing or preventing resistance. Resistance management based on robust scientific evidence is vital to prolong the effective life of fungicides and safeguard their future use in crop protection.
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Affiliation(s)
- John A Lucas
- Department of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Nichola J Hawkins
- Department of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Bart A Fraaije
- Department of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, UK
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Lucas JA, Mahone EM, Westerveld M, Bieliauskas L, Baron IS. The American Board of Clinical Neuropsychology and American Academy of Clinical Neuropsychology: Updated Milestones 2005–2014. Clin Neuropsychol 2014; 28:889-906. [DOI: 10.1080/13854046.2014.935484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Carrasquillo MM, Crook JE, Pedraza O, Thomas CS, Pankratz VS, Allen M, Nguyen T, Malphrus KG, Ma L, Bisceglio GD, Roberts RO, Lucas JA, Smith GE, Ivnik RJ, Machulda MM, Graff-Radford NR, Petersen RC, Younkin SG, Ertekin-Taner N. Late-onset Alzheimer's risk variants in memory decline, incident mild cognitive impairment, and Alzheimer's disease. Neurobiol Aging 2014; 36:60-7. [PMID: 25189118 DOI: 10.1016/j.neurobiolaging.2014.07.042] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/04/2014] [Accepted: 07/28/2014] [Indexed: 11/19/2022]
Abstract
We tested association of nine late-onset Alzheimer's disease (LOAD) risk variants from genome-wide association studies (GWAS) with memory and progression to mild cognitive impairment (MCI) or LOAD (MCI/LOAD) in older Caucasians, cognitively normal at baseline and longitudinally evaluated at Mayo Clinic Rochester and Jacksonville (n>2000). Each variant was tested both individually and collectively using a weighted risk score. APOE-e4 associated with worse baseline memory and increased decline with highly significant overall effect on memory. CLU-rs11136000-G associated with worse baseline memory and incident MCI/LOAD. MS4A6A-rs610932-C associated with increased incident MCI/LOAD and suggestively with lower baseline memory. ABCA7-rs3764650-C and EPHA1-rs11767557-A associated with increased rates of memory decline in subjects with a final diagnosis of MCI/LOAD. PICALM-rs3851179-G had an unexpected protective effect on incident MCI/LOAD. Only APOE-inclusive risk scores associated with worse memory and incident MCI/LOAD. The collective influence of the nine top LOAD GWAS variants on memory decline and progression to MCI/LOAD appears limited. Discovery of biologically functional variants at these loci may uncover stronger effects on memory and incident disease.
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Affiliation(s)
| | - Julia E Crook
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL, USA
| | - Otto Pedraza
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Colleen S Thomas
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL, USA
| | - V Shane Pankratz
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Mariet Allen
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Thuy Nguyen
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Li Ma
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Rosebud O Roberts
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - John A Lucas
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Glenn E Smith
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Robert J Ivnik
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Mary M Machulda
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | | | | | | | - Nilüfer Ertekin-Taner
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA; Department of Neurology, Mayo Clinic, Jacksonville, FL, USA.
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Gerhard T, Huybrechts K, Olfson M, Schneeweiss S, Bobo WV, Doraiswamy PM, Devanand DP, Lucas JA, Huang C, Malka ES, Levin R, Crystal S. Comparative mortality risks of antipsychotic medications in community-dwelling older adults. Br J Psychiatry 2014; 205:44-51. [PMID: 23929443 DOI: 10.1192/bjp.bp.112.122499] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND All antipsychotic medications carry warnings of increased mortality for older adults, but little is known about comparative mortality risks between individual agents. AIMS To estimate the comparative mortality risks of commonly prescribed antipsychotic agents in older people living in the community. METHOD A retrospective, claims-based cohort study was conducted of people over 65 years old living in the community who had been newly prescribed risperidone, olanzapine, quetiapine, haloperidol, aripiprazole or ziprasidone (n = 136 393). Propensity score-adjusted Cox proportional hazards models assessed the 180-day mortality risk of each antipsychotic compared with risperidone. RESULTS Risperidone, olanzapine and haloperidol showed a dose-response relation in mortality risk. After controlling for propensity score and dose, mortality risk was found to be increased for haloperidol (hazard ratio (HR) = 1.18, 95% CI 1.06-1.33) and decreased for quetiapine (HR = 0.81, 95% CI 0.73-0.89) and olanzapine (HR = 0.82, 95% CI 0.74-0.90). CONCLUSIONS Significant variation in mortality risk across commonly prescribed antipsychotics suggests that antipsychotic selection and dosing may affect survival of older people living in the community.
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Affiliation(s)
- T Gerhard
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - K Huybrechts
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - M Olfson
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - S Schneeweiss
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - W V Bobo
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - P M Doraiswamy
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - D P Devanand
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - J A Lucas
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - C Huang
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - E S Malka
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - R Levin
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
| | - S Crystal
- Tobias Gerhard, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, and Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey; Krista Huybrechts, PhD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Mark Olfson, MD MPH, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Sebastian Schneeweiss, MD, ScD, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; William V. Bobo, MD, Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, Tennessee; P. Murali Doraiswamy, MD, Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; D. P. Devanand, MD, Department of Psychiatry, College of Physicians and Surgeons, Columbia University, and the New York State Psychiatric Institute, New York, New York; Judith A. Lucas, EdD RN, Cecilia Huang, PhD, Edmond S. Malka, PhD, MPH, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey; Raisa Levin, MS, Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Stephen Crystal, PhD, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
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Du SW, Chen WH, Lucas JA. Pretreatment of biomass by torrefaction and carbonization for coal blend used in pulverized coal injection. Bioresour Technol 2014; 161:333-9. [PMID: 24727692 DOI: 10.1016/j.biortech.2014.03.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 03/16/2014] [Accepted: 03/18/2014] [Indexed: 05/26/2023]
Abstract
To evaluate the utility potential of pretreated biomass in blast furnaces, the fuel properties, including fuel ratio, ignition temperature, and burnout, of bamboo, oil palm, rice husk, sugarcane bagasse, and Madagascar almond undergoing torrefaction and carbonization in a rotary furnace are analyzed and compared to those of a high-volatile coal and a low-volatile one used in pulverized coal injection (PCI). The energy densities of bamboo and Madagascar almond are improved drastically from carbonization, whereas the increase in the calorific value of rice husk from the pretreatment is not obvious. Intensifying pretreatment extent significantly increases the fuel ratio and ignition temperature of biomass, but decreases burnout. The fuel properties of pretreated biomass materials are superior to those of the low-volatile coal. For biomass torrefied at 300°C or carbonized at temperatures below 500°C, the pretreated biomass can be blended with coals for PCI.
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Affiliation(s)
- Shan-Wen Du
- Iron and Steel Research and Development Department, China Steel Corporation, Kaohsiung 812, Taiwan, ROC
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan, ROC.
| | - John A Lucas
- Department of Chemical Engineering, University of Newcastle, Newcastle, Australia
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Ramos-Solano B, Garcia-Villaraco A, Gutierrez-Mañero FJ, Lucas JA, Bonilla A, Garcia-Seco D. Annual changes in bioactive contents and production in field-grown blackberry after inoculation with Pseudomonas fluorescens. Plant Physiol Biochem 2014; 74:1-8. [PMID: 24246668 DOI: 10.1016/j.plaphy.2013.10.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 10/22/2013] [Indexed: 05/23/2023]
Abstract
The aim of this study was two-fold: first, to characterize blackberry fruits from Rubus sp. var. Lochness along the year, and secondly, to evaluate the ability of a Pseudomonas strain (N21.4) to improve fruit yield and quality under field conditions in production greenhouses throughout the year. The strain was root or leaf inoculated to blackberry plants and fruits were harvested in each season. Nutritional parameters, antioxidant potential and bioactive contents were determined; total fruit yield was recorded. Blackberries grown under short day conditions (autumn and winter) showed significantly lower °Brix values than fruits grown under long day conditions. Interestingly, an increase in fruit °Brix, relevant for quality, was detected after bacterial challenge, together with significant and sustained increases in total phenolics and flavonoids. Improvements in inoculated fruits were more evident from October through early March, when environmental conditions are worse. In summary, N21.4 is an effective agent to increase fruit quality and production along the year in blackberry; this is an environmentally friendly approach to increase fruit quality.
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Affiliation(s)
- B Ramos-Solano
- University CEU San Pablo, Facultad de Farmacia, Ctra. Boadilla del Monte km 5.3, 28668 Madrid, Spain.
| | - A Garcia-Villaraco
- University CEU San Pablo, Facultad de Farmacia, Ctra. Boadilla del Monte km 5.3, 28668 Madrid, Spain
| | - F J Gutierrez-Mañero
- University CEU San Pablo, Facultad de Farmacia, Ctra. Boadilla del Monte km 5.3, 28668 Madrid, Spain
| | - J A Lucas
- University CEU San Pablo, Facultad de Farmacia, Ctra. Boadilla del Monte km 5.3, 28668 Madrid, Spain
| | - A Bonilla
- University CEU San Pablo, Facultad de Farmacia, Ctra. Boadilla del Monte km 5.3, 28668 Madrid, Spain
| | - D Garcia-Seco
- University CEU San Pablo, Facultad de Farmacia, Ctra. Boadilla del Monte km 5.3, 28668 Madrid, Spain
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Alfaya T, Feo Brito F, García Rodríguez C, Pineda F, Lucas JA, Gutiérrez Mañero FJ, Guerra F. Lolium perenne pollen from a polluted city shows high allergenic potency and increased associated Enterobacteriaceae counts. J Investig Allergol Clin Immunol 2014; 24:132-134. [PMID: 24834780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
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Pedraza O, Allen M, Jennette K, Carrasquillo M, Crook J, Serie D, Pankratz VS, Palusak R, Nguyen T, Malphrus K, Ma L, Bisceglio G, Roberts RO, Lucas JA, Ivnik RJ, Smith GE, Graff-Radford NR, Petersen RC, Younkin SG, Ertekin-Taner N. Evaluation of memory endophenotypes for association with CLU, CR1, and PICALM variants in black and white subjects. Alzheimers Dement 2013; 10:205-13. [PMID: 23643458 DOI: 10.1016/j.jalz.2013.01.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [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: 07/25/2012] [Revised: 10/14/2012] [Accepted: 01/11/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND Genetic variants at the CLU, CR1, and PICALM loci associate with risk for late-onset Alzheimer's disease (LOAD) in genomewide association studies. In this study, our aim was to determine whether the LOAD risk variants at these three loci influence memory endophenotypes in black and white subjects. METHODS We pursued an association study between single nucleotide polymorphism genotypes at the CLU, CR1, and PICALM loci and memory endophenotypes. We assessed black subjects (AA series: 44 with LOAD and 224 control subjects) recruited at Mayo Clinic Florida and whites recruited at Mayo Clinic Minnesota (RS series: 372 with LOAD and 1690 control subjects) and Florida (JS series: 60 with LOAD and 529 control subjects). Single nucleotide polymorphisms at the LOAD risk loci CLU (rs11136000), CR1 (rs6656401, rs3818361), and PICALM (rs3851179) were genotyped and tested for association with Logical Memory immediate recall, Logical Memory delayed recall, Logical Memory percent retention, Visual Reproduction immediate recall, Visual Reproduction delayed recall, and Visual Reproduction percent retention scores from the Wechsler Memory Scale-Revised using multivariable linear regression analysis, adjusting for age at exam, sex, education, and apolipoprotein E ε4 dosage. RESULTS We identified nominally significant or suggestive associations between the LOAD-risky CR1 variants and worse Logical Memory immediate recall scores in blacks (P = .068-.046, β = -2.7 to -1.2). The LOAD-protective CLU variant is associated with better logical memory endophenotypes in white subjects (P = .099-.027, β = 0.31-0.93). The CR1 associations persisted when the control subjects from the AA series were assessed separately. The CLU associations appeared to be driven by one of the white series (RS) and were also observed when the control subset from RS was analyzed. CONCLUSION These results suggest for the first time that LOAD risk variants at CR1 may influence memory endophenotypes in blacks. In addition, the CLU LOAD-protective variant may confer enhanced memory in whites. Although these results would not remain significant after stringent corrections for multiple testing, they need to be considered in the context of the LOAD associations with which they have biological consistency. They also provide estimates for effect sizes on memory endophenotypes that could guide future studies. The detection of memory effects for these variants in clinically normal subjects, implies that these LOAD risk loci might modify memory prior to clinical diagnosis of AD.
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Affiliation(s)
- Otto Pedraza
- Mayo Clinic Florida, Department of Psychiatry and Psychology, Jacksonville, FL, USA
| | - Mariet Allen
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | - Kyle Jennette
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | | | - Julia Crook
- Mayo Clinic Florida, Biostatistics Unit, Jacksonville, FL, USA
| | - Daniel Serie
- Mayo Clinic Florida, Biostatistics Unit, Jacksonville, FL, USA
| | - V Shane Pankratz
- Mayo Clinic Minnesota, Department of Biostatistics, Rochester, MN, USA
| | - Ryan Palusak
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | - Thuy Nguyen
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | - Kimberly Malphrus
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | - Li Ma
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | - Gina Bisceglio
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | | | - John A Lucas
- Mayo Clinic Florida, Department of Psychiatry and Psychology, Jacksonville, FL, USA
| | - Robert J Ivnik
- Mayo Clinic Minnesota, Department of Psychiatry and Psychology, Rochester, MN, USA
| | - Glenn E Smith
- Mayo Clinic Minnesota, Department of Psychiatry and Psychology, Rochester, MN, USA
| | | | | | - Steven G Younkin
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA
| | - Nilüfer Ertekin-Taner
- Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, USA; Mayo Clinic Florida, Department of Neurology, Jacksonville, FL, USA.
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Herington JL, Glore DR, Lucas JA, Osteen KG, Bruner-Tran KL. Dietary fish oil supplementation inhibits formation of endometriosis-associated adhesions in a chimeric mouse model. Fertil Steril 2012; 99:543-50. [PMID: 23103017 DOI: 10.1016/j.fertnstert.2012.10.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 10/01/2012] [Accepted: 10/02/2012] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To examine whether dietary fish oil supplementation reduces development of spontaneous endometriosis-associated adhesions using an established model. DESIGN Laboratory-based study. SETTING Medical center research laboratory. PATIENT(S)/ANIMAL(S): Disease-free women of reproductive age and nude mice. INTERVENTION(S) Women were not provided any intervention. Mice were randomized to receive fish oil supplementation or control diet. MAIN OUTCOME MEASURE(S) Experimental endometriosis was established in mice via injection of human endometrial tissue within 16 hours of ovariectomy. Mice were provided standard or menhaden fish oil-supplemented diets for ≥ 2 weeks before initiation of experimental endometriosis and until killing them 1 week later. At necropsy, mice were examined for the presence and extent of adhesions and endometriotic-like lesions. Tissues were excised and morphologically characterized. RESULT(S) Adhesions/lesions were reduced in mice provided with dietary fish oil compared with control animals. Leukocytes were more numerous within the adhesions/lesions of the mice maintained on the standard diet compared with animals provided with fish oil. As indicated by staining intensity, collagen deposition was greater at adhesion sites within control mice compared with fish oil-supplemented animals. CONCLUSION(S) Wound-healing associated with surgery created an inflammatory peritoneal microenvironment that promoted the development of both experimental endometriosis and adhesions in a murine model. Targeting excessive inflammation with fish oil may be an effective adjuvant therapy to reduce the development of postsurgical adhesions related to endometriosis.
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Affiliation(s)
- Jennifer L Herington
- Women's Reproductive Health Research Center, Department of Obstetrics and Gynecology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA
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Spering CC, Hobson V, Lucas JA, Menon CV, Hall JR, O’Bryant SE. Diagnostic accuracy of the MMSE in detecting probable and possible Alzheimer's disease in ethnically diverse highly educated individuals: an analysis of the NACC database. J Gerontol A Biol Sci Med Sci 2012; 67:890-6. [PMID: 22396476 PMCID: PMC3403860 DOI: 10.1093/gerona/gls006] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Accepted: 01/08/2012] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND To validate and extend the findings of a raised cut score of O'Bryant and colleagues (O'Bryant SE, Humphreys JD, Smith GE, et al. Detecting dementia with the mini-mental state examination in highly educated individuals. Arch Neurol. 2008;65(7):963-967.) for the Mini-Mental State Examination in detecting cognitive dysfunction in a bilingual sample of highly educated ethnically diverse individuals. METHODS Archival data were reviewed from participants enrolled in the National Alzheimer's Coordinating Center minimum data set. Data on 7,093 individuals with 16 or more years of education were analyzed, including 2,337 cases with probable and possible Alzheimer's disease, 1,418 mild cognitive impairment patients, and 3,088 nondemented controls. Ethnic composition was characterized as follows: 6,296 Caucasians, 581 African Americans, 4 American Indians or Alaska natives, 2 native Hawaiians or Pacific Islanders, 149 Asians, 43 "Other," and 18 of unknown origin. RESULTS Diagnostic accuracy estimates (sensitivity, specificity, and likelihood ratio) of Mini-Mental State Examination cut scores in detecting probable and possible Alzheimer's disease were examined. A standard Mini-Mental State Examination cut score of 24 (≤23) yielded a sensitivity of 0.58 and a specificity of 0.98 in detecting probable and possible Alzheimer's disease across ethnicities. A cut score of 27 (≤26) resulted in an improved balance of sensitivity and specificity (0.79 and 0.90, respectively). In the cognitively impaired group (mild cognitive impairment and probable and possible Alzheimer's disease), the standard cut score yielded a sensitivity of 0.38 and a specificity of 1.00 while raising the cut score to 27 resulted in an improved balance of 0.59 and 0.96 of sensitivity and specificity, respectively. CONCLUSIONS These findings cross-validate our previous work and extend them to an ethnically diverse cohort. A higher cut score is needed to maximize diagnostic accuracy of the Mini-Mental State Examination in individuals with college degrees.
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Affiliation(s)
| | - Valerie Hobson
- Department of Psychology, Texas Tech University, Lubbock
| | - John A. Lucas
- Mayo Clinic College of Medicine, Jacksonville, Florida
| | - Chloe V. Menon
- Department of Psychology, Texas Tech University, Lubbock
| | - James R. Hall
- Department of Psychiatry, University of North Texas Health Science Center,
Fort Worth
- Institute for Aging and Alzheimer's Disease Research, University of
North Texas Health Science Center, Fort Worth
| | - Sid E. O’Bryant
- Institute for Aging and Alzheimer's Disease Research, University of
North Texas Health Science Center, Fort Worth
- Department of Internal Medicine, University of North Texas Health Science
Center, Fort Worth
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Cools HJ, Bayon C, Atkins S, Lucas JA, Fraaije BA. Overexpression of the sterol 14α-demethylase gene (MgCYP51) in Mycosphaerella graminicola isolates confers a novel azole fungicide sensitivity phenotype. Pest Manag Sci 2012; 68:1034-40. [PMID: 22411894 DOI: 10.1002/ps.3263] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 11/16/2011] [Accepted: 01/06/2012] [Indexed: 05/26/2023]
Abstract
BACKGROUND The recent evolution towards resistance to azole fungicides in European populations of the wheat pathogen Mycosphaerella graminicola has been caused by the progressive accumulation of mutations in MgCYP51 gene, encoding the azole target sterol 14α-demethylase. Particular combinations of mutations have been shown specifically to affect the interaction of the MgCYP51 protein with different members of the azole class. Although additional mechanisms, including increased MgCYP51 expression and enhanced active efflux, have been proposed, the genetic changes underlying these mechanisms are unknown. RESULTS Analysis of the azole sensitivities of recent M. graminicola isolates identified a novel phenotype, seemingly independent of changes in MgCYP51 coding sequence. Characterised by a 7-16-fold reduction in in vitro sensitivity to all azoles tested and by growth on seedlings at higher doses of azoles in glasshouse tests compared with isolates carrying the same MgCYP51 variant (L50S, S188N, I381V, ΔY459/G460, N513K), isolates with this phenotype constitutively overexpress MgCYP51 by between 10- and 40-fold compared with the wild type. Analysis of sequences upstream of the predicted MgCYP51 translation start codon identified a novel 120 bp indel, considered to be an insertion, in isolates overexpressing MgCYP51. CONCLUSIONS The identification of an insertion in the predicted MgCYP51 promoter in azole-resistant isolates overexpressing MgCYP51 is the first report of a genetic mechanism, other than changes in target-site coding sequence, affecting sensitivity to multiple azoles in field isolates of M. graminicola. The identification of recent isolates overexpressing MgCYP51 confirms the ongoing evolution and diversification of resistance mechanisms in European populations of M. graminicola.
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Affiliation(s)
- Hans J Cools
- Department of Plant Pathology and Microbiology, Rothamsted Research, Harpenden, Hertfordshire, UK.
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