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Nawaz H, Sargent L, Quilon H, Cloud LJ, Testa CM, Snider JD, Lageman SK, Baron MS, Berman BD, Zimmerman K, Price ET, Mukhopadhyay ND, Barrett MJ. Anticholinergic Medication Burden in Parkinson's Disease Outpatients. J Parkinsons Dis 2022; 12:599-606. [PMID: 34806617 DOI: 10.3233/jpd-212769] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Individuals with Parkinson's disease (PD) may be especially vulnerable to future cognitive decline from anticholinergic medications. OBJECTIVE To characterize anticholinergic medication burden, determine the co-occurrence of anticholinergic and cholinesterase inhibitors, and to assess the correlations among anticholinergic burden scales in PD outpatients. METHODS We studied 670 PD outpatients enrolled in a clinic registry between 2012 and 2020. Anticholinergic burden was measured with the Anticholinergic Cognitive Burden Scale (ACB), Anticholinergic Drug Scale (ADS), Anticholinergic Risk Scale (ARS), and Drug Burden Index-Anticholinergic component (DBI-Ach). Correlations between scales were assessed with weighted kappa coefficients. RESULTS Between 31.5 to 46.3% of PD patients were taking medications with anticholinergic properties. Among the scales applied, the ACB produced the highest prevalence of medications with anticholinergic properties (46.3%). Considering only medications with definite anticholinergic activity (scores of 2 or 3 on ACB, ADS, or ARS), the most common anticholinergic drug classes were antiparkinsonian (8.2%), antipsychotic (6.4%), and urological (3.3%) medications. Cholinesterase inhibitors and medications with anticholinergic properties were co-prescribed to 5.4% of the total cohort. The most highly correlated scales were ACB and ADS (κ= 0.71), ACB and ARS (κ= 0.67), and ADS and ARS (κ= 0.55). CONCLUSION A high proportion of PD patients (20%) were either taking antiparkinsonian, urological, or antipsychotic anticholinergic medications or were co-prescribed anticholinergic medications and cholinesterase inhibitors. By virtue of its detection of a high prevalence of anticholinergic medication usage and its high correlation with other scales, our data support use of the ACB scale to assess anticholinergic burden in PD patients.
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Affiliation(s)
- Huma Nawaz
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
| | - Lana Sargent
- School of Nursing, Virginia Commonwealth University, Richmond, VA, USA.,Department of Pharmacotherapy & Outcomes Science, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA.,Geriatric Pharmacotherapy Program, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA.,Institute for Inclusion, Inquiry & Innovation (iCubed): Health & Wellness in Aging Populations Core, Richmond, VA, USA
| | | | - Leslie J Cloud
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
| | - Claudia M Testa
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
| | - Jon D Snider
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
| | - Sarah K Lageman
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA.,Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
| | - Mark S Baron
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA.,Southeast Veterans Affairs Parkinson's Disease Research, Education and Clinical Center (PADRECC), Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Brian D Berman
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
| | - Kristin Zimmerman
- Department of Pharmacotherapy & Outcomes Science, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA
| | - Elvin T Price
- Department of Pharmacotherapy & Outcomes Science, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA.,Geriatric Pharmacotherapy Program, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA.,Institute for Inclusion, Inquiry & Innovation (iCubed): Health & Wellness in Aging Populations Core, Richmond, VA, USA
| | - Nitai D Mukhopadhyay
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA, USA
| | - Matthew J Barrett
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
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Weretilnyk EA, Alexander KJ, Drebenstedt M, Snider JD, Summers PS, Moffatt BA. Maintaining methylation activities during salt stress. The involvement of adenosine kinase. Plant Physiol 2001; 125:856-65. [PMID: 11161043 PMCID: PMC64887 DOI: 10.1104/pp.125.2.856] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2000] [Revised: 08/31/2000] [Accepted: 10/23/2000] [Indexed: 05/17/2023]
Abstract
Synthesis of the compatible osmolyte Gly betaine is increased in salt-stressed spinach (Spinacia oleracea). Gly betaine arises by oxidation of choline from phosphocholine. Phosphocholine is synthesized in the cytosol by three successive S-adenosyl-Met-dependent N-methylations of phosphoethanolamine. With each transmethylation, a molecule of S-adenosylhomo-Cys (SAH) is produced, a potent inhibitor of S-adenosyl-Met-dependent methyltransferases. We examined two enzymes involved in SAH metabolism: SAH hydrolase (SAHH) catabolizes SAH to adenosine plus homo-Cys and adenosine kinase (ADK) converts adenosine to adenosine monophosphate. In vitro SAHH and ADK activities increased incrementally in extracts from leaves of spinach plants subjected to successively higher levels of salt stress and these changes reflected increased levels of SAHH and ADK protein and transcripts. Another Gly betaine accumulator, sugar beet (Beta vulgaris), also showed salt-responsive increases in SAHH and ADK activities and protein whereas tobacco (Nicotiana tabacum) and canola (Brassica napus), which do not accumulate Gly betaine, did not show comparable changes in these enzymes. In spinach, subcellular localization positions SAHH and ADK in the cytosol with the phospho-base N-methyltransferase activities. Because SAHH activity is inhibited by its products, we propose that ADK is not a stress-responsive enzyme per se, but plays a pivotal role in sustaining transmethylation reactions in general by serving as a coarse metabolic control to reduce the cellular concentration of free adenosine. In support of this model, we grew Arabidopsis under a short-day photoperiod that promotes secondary cell wall development and found both ADK activity and transcript levels to increase severalfold.
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Affiliation(s)
- E A Weretilnyk
- Department of Biology, McMaster University, Hamilton, Ontario, Canada L8S 4K1.
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McDonald HR, Schatz H, Allen AW, Chenoweth RG, Cohen HB, Crawford JB, Klein R, May DR, Snider JD. Retinal toxicity secondary to intraocular gentamicin injection. Ophthalmology 1986; 93:871-7. [PMID: 3763130 DOI: 10.1016/s0161-6420(86)33648-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The authors present five cases of severe retinal ischemia associated with gentamicin injection. In three of the cases massive doses of gentamicin were erroneously injected into the eye; in two of the cases the authors presume that gentamicin toxicity occurred. The sequence of clinical findings was similar in all five cases. The prominent findings included early superficial and intraretinal hemorrhages, opaque and edematous retina, cotton-wool infarcts, arteriolar narrowing, and venous beading. Fluorescein angiography revealed severe retinal vascular nonperfusion. Chronic findings included rubeosis irides, neovascular glaucoma, retinal pigmentary degeneration, and optic atrophy. Of the documented cases of massive intraocular gentamicin injection, two patients had no light perception (NLP) vision and one had bare light perception. Of the two cases of presumed gentamicin toxicity, one had 20/400 vision and one had count fingers vision. Strict precautions are necessary to prevent the catastrophic events resulting from inadvertent gentamicin injection; such precautions should include precise labeling of all injectable solutions on the surgical field, waiting to draw up injectable antibiotics until the time they are needed, and drawing up injectable antibiotics under direct physician observation. All intravitreal injections should be performed slowly, in the anterior vitreous, with the needle bevel up.
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