1
|
Wang P, Tadeo X, Chew HSJ, Sapanel Y, Ong YH, Leung NYT, Chow EKH, Ho D. N-of-1 health optimization: Digital monitoring of biomarker dynamics to gamify adherence to metabolic switching. PNAS NEXUS 2024; 3:pgae214. [PMID: 38881838 PMCID: PMC11179112 DOI: 10.1093/pnasnexus/pgae214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 05/20/2024] [Indexed: 06/18/2024]
Abstract
The digital health field is experiencing substantial growth due to its potential for sustained and longitudinal deployment. In turn, this may drive improved monitoring and intervention as catalysts for behavioral change compared to traditional point-of-care practices. In particular, the increase in incidence of population health challenges such as diabetes, heart disease, fatty liver disease, and other disorders coupled with rising healthcare costs have emphasized the importance of exploring technical, economics, and implementation considerations, among others in the decentralization of health and healthcare innovations. Both healthy individuals and patients stand to benefit from continued technical advances and studies in these domains. To address these points, this study reports a N-of-1 study comprised of sustained regimens of intermittent fasting, fitness (strength and cardiovascular training), and high protein, low carbohydrate diet and parallel monitoring. These regimens were paired with serial blood ketone, blood glucose (wearable and finger stick) and blood pressure readings, as well as body weight measurements using a collection of devices. Collectively this suite of platforms and approaches were used to monitor metabolic switching from glucose to ketones as energy sources-a process associated with potential cardio- and neuroprotective functions. In addition to longitudinal biomarker dynamics, this work discusses user perspectives on the potential role of harnessing digital devices to these dynamics as potential gamification factors, as well as considerations for the role of biomarker monitoring in health regimen development, user stratification, and potentially informing downstream population-scale studies to address metabolic disease, healthy aging and longevity, among other indications.
Collapse
Affiliation(s)
- Peter Wang
- Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore 117583, Singapore
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore 117456, Singapore
| | - Xavier Tadeo
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore 117456, Singapore
| | - Han Shi Jocelyn Chew
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Yoann Sapanel
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- Singapore's Health District @ Queenstown, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Yoong Hun Ong
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore 117456, Singapore
| | - Nicole Yong Ting Leung
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore 117456, Singapore
| | - Edward Kai-Hua Chow
- Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore 117583, Singapore
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore 117456, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore
- NUS Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| | - Dean Ho
- Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore 117583, Singapore
- Institute for Digital Medicine (WisDM), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore 117456, Singapore
- Singapore's Health District @ Queenstown, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
- The Bia-Echo Asia Centre for Reproductive Longevity and Equality, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| |
Collapse
|
2
|
Hsieh TY, Hung PL, Su TY, Peng SJ. Graph Theory-Based Electroencephalographic Connectivity via Phase-Locking Value and Its Association with Ketogenic Diet Responsiveness in Patients with Focal Onset Seizures. Nutrients 2022; 14:nu14214457. [PMID: 36364720 PMCID: PMC9659238 DOI: 10.3390/nu14214457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/16/2022] [Accepted: 10/20/2022] [Indexed: 11/25/2022] Open
Abstract
Ketogenic diets (KDs) are a promising alternative therapy for pediatric refractory epilepsy. Several predictors of KD responsiveness have been identified, including biochemical parameters, seizure types, and electroencephalography (EEG) examinations. We hypothesized that graph theory-based EEG functional connectivity could explain KD responses in patients presenting focal onset seizure (FOS). A total of 17 patients aged 0-30 years old with focal onset seizures (FOS) were recruited as a study group between January 2015 and July 2021. Twenty age-matched children presenting headache with no intracranial complications nor other medical issues were enrolled as a control group. Data were obtained at baseline and at 12 months after initiating KD therapy (KDT) using the child behavior checklist (CBCL) and brain functional connectivity parameters based on phase-locking value from 19 scalp EEG signals, including nodal strength, global efficiency, clustering coefficient, and betweenness centrality. Compared with age-matched controls, patients presenting FOS with right or bilateral EEG lateralization presented higher baseline functional connectivity, including parameters such as global efficiency, mean cluster coefficient and mean nodal strength in the delta and beta frequency bands. In patients presenting FOS with right or bilateral EEG lateralization, the global efficiency of functional connectivity parameters in the delta and theta frequency bands was significantly lower at 12 months after KDT treatment than before KDT. Those patients also presented a significantly lower mean clustering coefficient and mean nodal strength in the theta frequency band at 12 months after KDT treatment. Changes in brain functional connectivity were positively correlated with social problems, attention, and behavioral scores based on CBCL assessments completed by parents. This study provides evidence that KDT might be beneficial in the treatment of patients with FOS. Graph theoretic analysis revealed that the observed effects were related to decreased functional connectivity, particularly in terms of global efficiency. Our findings related to brain connectivity revealed lateralization to the right (non-dominant) hemisphere; however, we were unable to define the underlying mechanism. Our data revealed that in addition to altered brain connectivity, KDT improved the patient's behavior and emotional state.
Collapse
Affiliation(s)
- Tzu-Yun Hsieh
- Division of Pediatric Neurology, Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Pi-Lien Hung
- Division of Pediatric Neurology, Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Correspondence: (P.-L.H.); (S.-J.P.); Tel.: +886-7-731-7123 (ext. 8707) (P.-L.H.); +886-2-6638-2736 (ext. 1993) (S.-J.P.); Fax: +886-7-731-8762 (P.-L.H.); +886-2-2732-1956 (S.-J.P.)
| | - Ting-Yu Su
- Division of Pediatric Neurology, Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Syu-Jyun Peng
- Professional Master Program in Artificial Intelligence in Medicine, College of Medicine, Taipei Medical University, Taipei 10675, Taiwan
- Correspondence: (P.-L.H.); (S.-J.P.); Tel.: +886-7-731-7123 (ext. 8707) (P.-L.H.); +886-2-6638-2736 (ext. 1993) (S.-J.P.); Fax: +886-7-731-8762 (P.-L.H.); +886-2-2732-1956 (S.-J.P.)
| |
Collapse
|
3
|
Carroll JH, Martin-McGill KJ, Cross JH, Hickson M, Williams E, Aldridge V, Collinson A. Core outcome set development for childhood epilepsy treated with ketogenic diet therapy: Results of a scoping review and parent interviews. Seizure 2022; 99:54-67. [PMID: 35598573 DOI: 10.1016/j.seizure.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/23/2022] [Accepted: 05/10/2022] [Indexed: 11/15/2022] Open
Abstract
PURPOSE Clinical trials on childhood epilepsy treated with ketogenic diet (KD) use a wide range of outcomes, however, patients and decision-makers often do not perceive the outcomes used as the most important. We sought parental opinion on outcomes of importance and compared these to outcomes reported in published research. METHODS Ethical approval (London-Surrey-REC19/LO/1680). A scoping review identified outcomes reported in previous studies of childhood epilepsy and KD. Parents were recruited from nine KD centres (UK), charities and social media (international), then interviewed (Jan-April 2020) to explore priority outcomes. Content analysis identified all outcomes in transcripts. Parent identified outcomes were compared with those in the scoping review. Outcomes were collated and grouped into domains according to the COMET Taxonomy. RESULTS Of 2663 articles;147 met inclusion criteria. 921 verbatim outcomes were sorted into 90 discrete outcomes, reduced to 70 in consultation with the study advisory group, then classified into 21 domains. Parents (n = 21) identified 39 outcomes as important from the scoping review and seven new outcomes. They prioritised both physiological and functional outcomes in contrast to past studies, which prioritised physiological outcomes. CONCLUSION Little consistency exists in the outcomes used in childhood epilepsy and KD research. Those traditionally used do not adequately reflect parents' important outcomes for their child. Clinical trials should consider the broader priorities of parents when choosing outcomes, in particular, functional outcomes. Identified outcomes will inform an international two-round Delphi-study with parent, professional and researcher participants to develop a core outcome set for this clinical area (COMET registration #1116).
Collapse
Affiliation(s)
| | | | - J Helen Cross
- Developmental Neurosciences, UCL, NIHR BRC Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Mary Hickson
- Faculty of Health, University of Plymouth, Devon, United Kingdom
| | - Emma Williams
- Matthew's Friends, Lingfield, Surrey, United Kingdom
| | - Val Aldridge
- Matthew's Friends, Lingfield, Surrey, United Kingdom
| | - Avril Collinson
- Faculty of Health, University of Plymouth, Devon, United Kingdom
| |
Collapse
|
4
|
Teng L, Lee VW, Murugesu S, Lee J, Ibrahim NS, Ishak MF, Mohamed AR, Khoo T. The Glycemic Biomarkers in Children with Drug‐Resistant Epilepsy on Various Types of Ketogenic Diet Therapies: A Cross‐sectional study. Epilepsia 2022; 63:2011-2023. [DOI: 10.1111/epi.17292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Lip‐Yuen Teng
- Paediatric Neurology Unit Department of Paediatrics Hospital Tunku Azizah Kuala Lumpur Malaysia
| | - Vanessa Wan‐Mun Lee
- Paediatric Neurology Unit Department of Paediatrics Hospital Tunku Azizah Kuala Lumpur Malaysia
| | - Sumitha Murugesu
- Paediatric Neurology Unit Department of Paediatrics Hospital Tunku Azizah Kuala Lumpur Malaysia
| | - Jun‐Xiong Lee
- Paediatric Neurology Unit Department of Paediatrics Hospital Tunku Azizah Kuala Lumpur Malaysia
| | - Nur Sakinah Ibrahim
- Department of Dietetics and Food Services Hospital Tunku Azizah Kuala Lumpur Malaysia
| | - Mohd Fatahudin Ishak
- Department of Dietetics and Food Services Hospital Tunku Azizah Kuala Lumpur Malaysia
| | | | - Teik‐Beng Khoo
- Paediatric Neurology Unit Department of Paediatrics Hospital Tunku Azizah Kuala Lumpur Malaysia
| |
Collapse
|
5
|
Yang R, Wen J, Wei W, Chen H, Cao D, Chen L, Lu X, Hu Y, Huang T, Li B, Lin S, Zou D, Ye J, Zhang M, Wang Y, Yu M, Liao J, Xiao Z. Improving the effects of ketogenic diet therapy in children with drug-resistant epilepsy. Seizure 2022; 94:183-188. [PMID: 34802897 DOI: 10.1016/j.seizure.2021.10.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/02/2021] [Accepted: 10/27/2021] [Indexed: 02/08/2023] Open
Abstract
PURPOSE To evaluate the retention rate, efficacy, and safety of ketogenic diet therapy for drug-resistant epilepsy in children and compare the results with those of a previous cohort at our institution. METHODS A total of 634 children with drug-resistant epilepsy were included in this retrospective study. Patients were categorized into two groups. The previous cohort was included as a control group and included 317 children assessed between 2004 and 2011, whereas the current group included 317 children assessed between 2015 and 2019. The control group was provided care as usual, and the current group additionally adopted the goal and long-term management strategy. Outcomes were measured with respect to retention rate, seizure reduction, and adverse reaction. RESULTS Patient demographics were consistent between both cohorts. Compared to the past ten years, the retention rate significantly increased over time (3 months: 62.8% vs. 82.0%, p <0.001; 6 months: 42.0% vs. 60.6%, p <0.001; 12 months: 24.3% vs. 34.1%, p = 0.007), and the response rate was significantly improved (3 months: 35.0% vs. 55.5%, p <0.001; 6 months: 26.2% vs. 43.2%, p <0.001; 12 months: 18.6% vs. 31.5%, p <0.001). Constipation (n = 79, 24.9%) was the most common side effect in the current cohort. Food refusal and hypoproteinaemia reduced to 3.5% and 0.9%, respectively. CONCLUSION Goal and long-term management is effective for ketogenic diet therapy, which significantly improved the ketogenic diet retention rate, efficacy, and incidence of adverse reactions. This strategy has promising applicability in ketogenic diet therapy. CLINICAL REGISTRATION ChiCTR-IIR-16,008,342.
Collapse
Affiliation(s)
- Rongrong Yang
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China; China Medical University, Shenyang, Liaoning, China
| | - Jialun Wen
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Wenjing Wei
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China; China Medical University, Shenyang, Liaoning, China
| | - Haili Chen
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China; China Medical University, Shenyang, Liaoning, China
| | - Dezhi Cao
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Li Chen
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Xinguo Lu
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Yan Hu
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Tieshuan Huang
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Bing Li
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Sufang Lin
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Dongfang Zou
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Jinghua Ye
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Man Zhang
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Yaoye Wang
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Mei Yu
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Jianxiang Liao
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China.
| | - Zhitian Xiao
- Department of Pediatric Neurology, China Medical University Shenzhen Children's Hospital, Shenzhen, Guangdong, China.
| |
Collapse
|
6
|
Masino SA, Ruskin DN, Freedgood NR, Lindefeldt M, Dahlin M. Differential ketogenic diet-induced shift in CSF lipid/carbohydrate metabolome of pediatric epilepsy patients with optimal vs. no anticonvulsant response: a pilot study. Nutr Metab (Lond) 2021; 18:23. [PMID: 33648550 PMCID: PMC7923458 DOI: 10.1186/s12986-020-00524-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/21/2020] [Indexed: 02/02/2023] Open
Abstract
Background The low carbohydrate, high fat ketogenic diet can be an effective anticonvulsant treatment in some pediatric patients with pharmacoresistant epilepsy. Its mechanism(s) of action, however, remain uncertain. Direct sampling of cerebrospinal fluid before and during metabolic therapy may reveal key changes associated with differential clinical outcomes. We characterized the relationship between seizure responsiveness and changes in lipid and carbohydrate metabolites. Methods We performed metabolomic analysis of cerebrospinal fluid samples taken before and during ketogenic diet treatment in patients with optimal response (100% seizure remission) and patients with no response (no seizure improvement) to search for differential diet effects in hallmark metabolic compounds in these two groups. Optimal responders and non-responders were similar in age range and included males and females. Seizure types and the etiologies or syndromes of epilepsy varied but did not appear to differ systematically between responders and non-responders. Results Analysis showed a strong effect of ketogenic diet treatment on the cerebrospinal fluid metabolome. Longitudinal and between-subjects analyses revealed that many lipids and carbohydrates were changed significantly by ketogenic diet, with changes typically being of larger magnitude in responders. Notably, responders had more robust changes in glucose and the ketone bodies β-hydroxybutyrate and acetoacetate than non-responders; conversely, non-responders had significant increases in fructose and sorbose, which did not occur in responders. Conclusions The data suggest that a differential and stronger metabolic response to the ketogenic diet may predict a better anticonvulsant response, and such variability is likely due to inherent biological factors of individual patients. Strategies to boost the metabolic response may be beneficial.
Collapse
Affiliation(s)
- Susan A Masino
- Department of Psychology and Neuroscience Program, Trinity College, Hartford, CT, 06106, USA
| | - David N Ruskin
- Department of Psychology and Neuroscience Program, Trinity College, Hartford, CT, 06106, USA.
| | - Natalie R Freedgood
- Department of Psychology and Neuroscience Program, Trinity College, Hartford, CT, 06106, USA
| | - Marie Lindefeldt
- Neuropediatric Department, Astrid Lindgren Children's Hospital, Karolinska Hospital, Stockholm, Sweden
| | - Maria Dahlin
- Neuropediatric Department, Astrid Lindgren Children's Hospital, Karolinska Hospital, Stockholm, Sweden
| |
Collapse
|
7
|
Hung PL, Lin JL, Chen C, Hung KY, Hsieh TY, Hsu MH, Kuo HC, Lin YJ. An Examination of Serum Acylcarnitine and Amino Acid Profiles at Different Time Point of Ketogenic Diet Therapy and Their Association of Ketogenic Diet Effectiveness. Nutrients 2020; 13:nu13010021. [PMID: 33374696 PMCID: PMC7822492 DOI: 10.3390/nu13010021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 12/09/2020] [Accepted: 12/18/2020] [Indexed: 12/30/2022] Open
Abstract
Background: This study aimed to identify metabolic parameters at different time points of ketogenic diet therapy (KDT) and investigate their association with response to KDT in pediatric drug-resistant epilepsy (DRE). Methods: Prospectively, twenty-nine patients (0.67~20 years old) with DRE received classic ketogenic diet with non-fasting, gradual KD initiation protocol (GRAD-KD) for 1 year were enrolled. A total of 22 patients remaining in study received blood examinations at baseline, 3rd, 6th, 9th, and 12th months of KDT. β-hydroxybutyrate, free carnitine, acylcarnitines, and amino acids were compared between responders (seizure reduction rate ≥ 50%) and non-responders (seizure reduction rate < 50%) to identify the effectiveness of KDT. Results: The 12-month retention rate was 76%. The responders after 12 months of KDT were 59% (13/22). The free carnitine level decreased significantly at 9th months (p < 0.001) but increased toward baseline without symptoms. Propionyl carnitine (C3), Isovaleryl carnitine (C5), 3-Hydroxyisovalerylcarnitine (C5:OH) and methylmalonyl carnitine (C4-DC) decreased but 3-hydroxybutyrylcarnitine (C4:OH) increased significantly at 12th months of KDT. The glycine level was persistently higher than baseline after KDT. KDT responders had lower baseline C3 and long-chain acylcarnitines, C14 and C18, as well as lower C5, C18, and leucine/isoleucine. Conclusions: KDT should be avoided in patients with non-ketotic hyperglycemia. Routine carnitine supplementation is not recommended because hypocarnitinemia was transient and asymptomatic during KDT. Better mitochondrial βoxidation function associates with greater KDT response.
Collapse
Affiliation(s)
- Pi-Lien Hung
- Department of Pediatrics, Division of Pediatric Neurology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (P.-L.H.); (M.-H.H.)
| | - Ju-Li Lin
- Department of Pediatrics, Division of Genetics and Endocrinology, Linkou Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyan 333, Taiwan;
| | - Chien Chen
- Department of Neurology, Taipei Veterans General Hospital, National Yang-Ming University, Taipei 112, Taiwan;
| | - Kai-Yin Hung
- Division of Nutritional Therapy, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan;
| | - Tzu-Yun Hsieh
- Department of Pediatrics, Division of Pediatric Critical Care, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (T.-Y.H.); (H.-C.K.)
| | - Mei-Hsin Hsu
- Department of Pediatrics, Division of Pediatric Neurology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (P.-L.H.); (M.-H.H.)
- Department of Pediatrics, Division of Pediatric Critical Care, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (T.-Y.H.); (H.-C.K.)
| | - Hsuan-Chang Kuo
- Department of Pediatrics, Division of Pediatric Critical Care, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (T.-Y.H.); (H.-C.K.)
| | - Ying-Jui Lin
- Department of Pediatrics, Division of Pediatric Critical Care, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (T.-Y.H.); (H.-C.K.)
- Correspondence: ; Tel.: +886-7-731-7123 (ext. 8795); Fax: +886-7-733-8009
| |
Collapse
|
8
|
Höller Y, Nardone R. Quantitative EEG biomarkers for epilepsy and their relation to chemical biomarkers. Adv Clin Chem 2020; 102:271-336. [PMID: 34044912 DOI: 10.1016/bs.acc.2020.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The electroencephalogram (EEG) is the most important method to diagnose epilepsy. In clinical settings, it is evaluated by experts who identify patterns visually. Quantitative EEG is the application of digital signal processing to clinical recordings in order to automatize diagnostic procedures, and to make patterns visible that are hidden to the human eye. The EEG is related to chemical biomarkers, as electrical activity is based on chemical signals. The most well-known chemical biomarkers are blood laboratory tests to identify seizures after they have happened. However, research on chemical biomarkers is much less extensive than research on quantitative EEG, and combined studies are rarely published, but highly warranted. Quantitative EEG is as old as the EEG itself, but still, the methods are not yet standard in clinical practice. The most evident application is an automation of manual work, but also a quantitative description and localization of interictal epileptiform events as well as seizures can reveal important hints for diagnosis and contribute to presurgical evaluation. In addition, the assessment of network characteristics and entropy measures were found to reveal important insights into epileptic brain activity. Application scenarios of quantitative EEG in epilepsy include seizure prediction, pharmaco-EEG, treatment monitoring, evaluation of cognition, and neurofeedback. The main challenges to quantitative EEG are poor reliability and poor generalizability of measures, as well as the need for individualization of procedures. A main hindrance for quantitative EEG to enter clinical routine is also that training is not yet part of standard curricula for clinical neurophysiologists.
Collapse
Affiliation(s)
- Yvonne Höller
- Faculty of Psychology, University of Akureyri, Akureyri, Iceland.
| | - Raffaele Nardone
- Department of Neurology, Franz Tappeiner Hospital, Merano, Italy; Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Austria; Department of Neurology, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria
| |
Collapse
|
9
|
Cuyàs E, Fernández-Arroyo S, Buxó M, Pernas S, Dorca J, Álvarez I, Martínez S, Pérez-Garcia JM, Batista-López N, Rodríguez-Sánchez CA, Amillano K, Domínguez S, Luque M, Morilla I, Stradella A, Viñas G, Cortés J, Verdura S, Brunet J, López-Bonet E, Garcia M, Saidani S, Joven J, Martin-Castillo B, Menendez JA. Metformin induces a fasting- and antifolate-mimicking modification of systemic host metabolism in breast cancer patients. Aging (Albany NY) 2020; 11:2874-2888. [PMID: 31076561 PMCID: PMC6535060 DOI: 10.18632/aging.101960] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 05/04/2019] [Indexed: 01/01/2023]
Abstract
Certain dietary interventions might improve the therapeutic index of cancer treatments. An alternative to the “drug plus diet” approach is the pharmacological reproduction of the metabolic traits of such diets. Here we explored the impact of adding metformin to an established therapeutic regimen on the systemic host metabolism of cancer patients. A panel of 11 serum metabolites including markers of mitochondrial function and intermediates/products of folate-dependent one-carbon metabolism were measured in paired baseline and post-treatment sera obtained from HER2-positive breast cancer patients randomized to receive either metformin combined with neoadjuvant chemotherapy and trastuzumab or an equivalent regimen without metformin. Metabolite profiles revealed a significant increase of the ketone body β-hydroxybutyrate and of the TCA intermediate α-ketoglutarate in the metformin-containing arm. A significant relationship was found between the follow-up levels of homocysteine and the ability of treatment arms to achieve a pathological complete response (pCR). In the metformin-containing arm, patients with significant elevations of homocysteine tended to have a higher probability of pCR. The addition of metformin to an established anti-cancer therapeutic regimen causes a fasting-mimicking modification of systemic host metabolism. Circulating homocysteine could be explored as a clinical pharmacodynamic biomarker linking the antifolate-like activity of metformin and biological tumor response.
Collapse
Affiliation(s)
- Elisabet Cuyàs
- Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain.,Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Salvador Fernández-Arroyo
- Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, IISPV, Rovira i Virgili University, Reus, Spain
| | - Maria Buxó
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Sonia Pernas
- Department of Medical Oncology, Breast Unit, Catalan Institute of Oncology-Hospital Universitari de Bellvitge-Bellvitge Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Joan Dorca
- Medical Oncology, Catalan Institute of Oncology, Girona, Spain
| | - Isabel Álvarez
- Medical Oncology Service, Hospital Universitario Donostia, Donostia-San Sebastián, Spain.,Biodonostia Health Research Institute, Donostia-San Sebastián, Spain
| | - Susana Martínez
- Medical Oncology Department, Hospital de Mataró, Mataró, Barcelona, Spain
| | | | - Norberto Batista-López
- Medical Oncology Service, Hospital Universitario de Canarias, La Laguna, Tenerife, Spain
| | - César A Rodríguez-Sánchez
- Medical Oncology Service, Hospital Universitario de Salamanca, Salamanca, Spain.,Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca, Spain
| | - Kepa Amillano
- Medical Oncology, Hospital Universitari Sant Joan, Reus, Spain
| | - Severina Domínguez
- Medical Oncology Service, Hospital Universitario Araba, Vitoria-Gasteiz, Spain
| | - Maria Luque
- Department of Medical Oncology, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Idoia Morilla
- Department of Medical Oncology, Breast Unit, Catalan Institute of Oncology-Hospital Universitari de Bellvitge-Bellvitge Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Agostina Stradella
- Department of Medical Oncology, Breast Unit, Catalan Institute of Oncology-Hospital Universitari de Bellvitge-Bellvitge Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Gemma Viñas
- Medical Oncology, Catalan Institute of Oncology, Girona, Spain
| | - Javier Cortés
- IOB Institute of Oncology, Hospital Quirónsalud, Madrid and Barcelona, Spain.,Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Sara Verdura
- Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain.,Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Joan Brunet
- Medical Oncology, Catalan Institute of Oncology, Girona, Spain.,Hereditary Cancer Programme, Catalan Institute of Oncology (ICO), Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet del Llobregat, Barcelona, Spain.,Hereditary Cancer Programme, Catalan Institute of Oncology (ICO), Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Eugeni López-Bonet
- Department of Anatomical Pathology, Dr. Josep Trueta Hospital of Girona, Girona, Spain
| | - Margarita Garcia
- Clinical Research Unit, Catalan Institute of Oncology, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Samiha Saidani
- Unit of Clinical Research, Catalan Institute of Oncology, Girona, Spain
| | - Jorge Joven
- Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, IISPV, Rovira i Virgili University, Reus, Spain
| | | | - Javier A Menendez
- Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain.,Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| |
Collapse
|
10
|
Roehl K, Falco-Walter J, Ouyang B, Balabanov A. Modified ketogenic diets in adults with refractory epilepsy: Efficacious improvements in seizure frequency, seizure severity, and quality of life. Epilepsy Behav 2019; 93:113-118. [PMID: 30867113 DOI: 10.1016/j.yebeh.2018.12.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVE This study evaluates the efficacy of a modified ketogenic diet (MKD) on seizure frequency, severity, and quality of life (QOL), as well as potential complications of MKD therapy among adults with drug-resistant epilepsy (DRE). METHODS Changes in seizure frequency, severity, QOL, and side effects were retrospectively examined among adults, ≥17 years of age, with DRE (≥2 antiepileptic drugs [AEDs]), after 3 months of MKD therapy. Attention was paid to medication or vagus nerve stimulator (VNS) changes as well to evaluate potential confounders. RESULTS A total of 60% (n = 33) of the 55 individuals reported ≥50% seizure frequency improvement, 42 (76%) reported improvement in seizure severity, and 48 (87%) reported improvement in QOL. More patients following a modified ketogenic diet - 15 g net carbohydrate daily (MKD-15) (95%) compared with a MKD-50 (69%) reported improvement in QOL (p = 0.02). Weight among the entire sample declined from 77.5 (20) kg to 73.9 (19.0) kg (p < 0.0001), and total cholesterol (TC), low density lipoprotein (LDL), and total cholesterol:high density lipoprotein (TC:HDL) increased significantly (p = 0.03, p = 0.04, and p = 0.02, respectively). Free carnitine values were available for a select number of patients, 26 (47%) at baseline, and 7 (13%) at follow-up, of which 8 (31%) at baseline, and 2 (29%) at follow-up had carnitine deficiency (<25 nmol/mL). Constipation was noted in 5 patients (9%), and no kidney stones were reported during the study period. There were no statistical differences in number or dose changes for AED or VNS during the study period. SIGNIFICANCE Modified ketogenic diet therapies reduce seizure frequency and severity and improve QOL among adults with DRE with few side effects outside of weight loss, a desired outcome among many adults with DRE. More restrictive MKDs may offer improved seizure severity and QOL. Modified ketogenic diet therapy increases LDL cholesterol, which may be cardioprotective if related to an increase in LDL particle size with high saturated fat intake; however, more research is needed examining LDL particle size changes among those receiving MKD therapy.
Collapse
Affiliation(s)
- Kelly Roehl
- Rush University Medical Center, 1725 West Harrison Street, Suite 885, Chicago, IL 60612, United States of America.
| | - Jessica Falco-Walter
- Rush University Medical Center, 1725 West Harrison Street, Suite 885, Chicago, IL 60612, United States of America; Stanford University, 213 Quarry Road, 4th Floor, Palo Alto, CA 94304, United States of America.
| | - Bichun Ouyang
- Rush University Medical Center, 1725 West Harrison Street, Suite 885, Chicago, IL 60612, United States of America.
| | - Antoaneta Balabanov
- Rush University Medical Center, 1725 West Harrison Street, Suite 885, Chicago, IL 60612, United States of America.
| |
Collapse
|
11
|
A ketogenic diet diminishes behavioral responses to cocaine in young adult male and female rats. Neuropharmacology 2019; 149:27-34. [PMID: 30731137 DOI: 10.1016/j.neuropharm.2019.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 01/20/2019] [Accepted: 02/01/2019] [Indexed: 01/12/2023]
Abstract
Ketogenic diets (KDs) are high fat, low carbohydrate formulations traditionally used to treat epilepsy; more recently, KDs have shown promise for a wide range of other neurological disorders. Drug addiction studies suggest that repeated exposure to drugs of abuse, including cocaine, results in a suite of neurobiological changes that includes neuroinflammation, decreased glucose metabolism, and disordered neurotransmission. Given that KDs positively regulate these factors, we addressed whether administration of a KD has potential as a novel therapy for drug addiction. In this study, male and female Sprague-Dawley rats were placed on a KD or a control diet (CD), beginning at five weeks of age and continuing through the end of behavioral testing. Three weeks after initiation of dietary treatments, rats received daily i.p. injections of cocaine (15 mg/kg) or saline vehicle for one week, were drug free for a subsequent week, and then all animals received a final challenge injection of 15 mg/kg cocaine. In the absence of cocaine injections, stereotyped locomotor responses were minimal and were unaffected by dietary treatment. In contrast, both males and females fed a KD exhibited decreased cocaine-induced stereotyped responses as compared to CD-fed rats. The sensitization of ambulatory responses was also disrupted in KD-fed rats. These results suggest that KDs directly impact dopamine-mediated behaviors, and hence may hold potential as a therapy for drug addiction.
Collapse
|
12
|
Joshi C, Stillman C, Criteser S, Oliver J, Conley A, Sillau S, Zupec-Kania B. Yield of laboratory testing in pediatric ketogenic diet patients: Critical assessment of abnormal results and impact on clinical care. Epilepsy Res 2018; 149:70-75. [PMID: 30500489 DOI: 10.1016/j.eplepsyres.2018.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/29/2018] [Accepted: 11/14/2018] [Indexed: 01/01/2023]
Abstract
OBJECTIVES To retrospectively assess the incidence of high beta hydroxybutyrate, low bicarbonate (BIC), high acyl carnitine, low selenium, low magnesium, low zinc, low phosphorus, in a cohort of supplemented patients treated with the ketogenic diet (KD) for medically intractable epilepsy. To analyze effect of age, duration of exposure to KD, type of KD, and route of KD intake on lab abnormalities. To analyze the incidence of clinically actionable results, resulting in medical interventions based on abnormal results and to analyze costs of testing. METHODS Retrospective chart review and statistical analysis. Association between abnormal values (binary) and categorical variables was tested with Chi-square/Fisher's exact test. Associations between abnormal values (binary) and continuous variables were analyzed with logistic regression. Statistical analyses were performed in SAS 9.4. RESULTS We included 91 patients with average duration on diet of 46.73 months (IQR 18.8-75.5 months). Most patients were on the classic KD (81 KD- 59% on 4:1 ratio, 10 modified Atkins diet). 74% were orally fed and 70% completed lab visits to the 12-month mark. There was no significant association between abnormal laboratory parameters and duration of exposure, type of diet, route of administration. Younger children were more likely to have low BIC, high acyl carnitine. Older children were more likely to have low phosphorus. Less than 15% of patients reported clinical changes to suggest dietary deficiency in vitamins/ minerals and in < 11% of cases was an actionable laboratory parameter found. SIGNIFICANCE Our study is the first to document the real-life incidence of selected tests being abnormal when following consensus guidelines on lab testing. Elimination of tests with low yield will result in cost savings of up to $USD 185 per visit. Low phosphorus is frequently found in patients on KD.
Collapse
Affiliation(s)
- Charuta Joshi
- Pediatric Neurology Children's Hospital Colorado, University of Colorado School of Medicine, United States.
| | - Chelsey Stillman
- Pediatric Neurology Children's Hospital Colorado, University of Colorado School of Medicine, United States
| | - Stephanie Criteser
- University of Colorado, department of Neurology, Biostatistics, United States
| | - Jennifer Oliver
- Pediatric Neurology Children's Hospital Colorado, University of Colorado School of Medicine, United States
| | - Alison Conley
- Pediatric Neurology Children's Hospital Colorado, University of Colorado School of Medicine, United States
| | - Stefan Sillau
- Children's Hospital of Colorado- Dietary Division, United States
| | | |
Collapse
|
13
|
Schoeler NE, Leu C, Balestrini S, Mudge JM, Steward CA, Frankish A, Leung M, Mackay M, Scheffer I, Williams R, Sander JW, Cross JH, Sisodiya SM. Genome-wide association study: Exploring the genetic basis for responsiveness to ketogenic dietary therapies for drug-resistant epilepsy. Epilepsia 2018; 59:1557-1566. [PMID: 30009487 PMCID: PMC6099477 DOI: 10.1111/epi.14516] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 06/19/2018] [Indexed: 02/04/2023]
Abstract
OBJECTIVE With the exception of specific metabolic disorders, predictors of response to ketogenic dietary therapies (KDTs) are unknown. We aimed to determine whether common variation across the genome influences the response to KDT for epilepsy. METHODS We genotyped individuals who were negative for glucose transporter type 1 deficiency syndrome or other metabolic disorders, who received KDT for epilepsy. Genotyping was performed with the Infinium HumanOmniExpressExome Beadchip. Hospital records were used to obtain demographic and clinical data. KDT response (≥50% seizure reduction) at 3-month follow-up was used to dissect out nonresponders and responders. We then performed a genome-wide association study (GWAS) in nonresponders vs responders, using a linear mixed model and correcting for population stratification. Variants with minor allele frequency <0.05 and those that did not pass quality control filtering were excluded. RESULTS After quality control filtering, the GWAS of 112 nonresponders vs 123 responders revealed an association locus at 6p25.1, 61 kb upstream of CDYL (rs12204701, P = 3.83 × 10-8 , odds ratio [A] = 13.5, 95% confidence interval [CI] 4.07-44.8). Although analysis of regional linkage disequilibrium around rs12204701 did not strengthen the likelihood of CDYL being the candidate gene, additional bioinformatic analyses suggest it is the most likely candidate. SIGNIFICANCE CDYL deficiency has been shown to disrupt neuronal migration and to influence susceptibility to epilepsy in mice. Further exploration with a larger replication cohort is warranted to clarify whether CDYL is the causal gene underlying the association signal.
Collapse
Affiliation(s)
- Natasha E. Schoeler
- Department of Clinical and Experimental EpilepsyUCL Institute of NeurologyLondonUK
- UCL Great Ormond Street Institute of Child HealthLondonUK
| | - Costin Leu
- Department of Clinical and Experimental EpilepsyUCL Institute of NeurologyLondonUK
- NIHR University College London Hospitals Biomedical Research CentreUCL Institute of NeurologyLondonUK
| | - Simona Balestrini
- Department of Clinical and Experimental EpilepsyUCL Institute of NeurologyLondonUK
- Chalfont Centre for EpilepsyChalfont St PeterUK
| | - Jonathan M. Mudge
- European Molecular Biology LaboratoryWellcome Genome CampusEuropean Bioinformatics InstituteCambridgeUK
| | | | - Adam Frankish
- European Molecular Biology LaboratoryWellcome Genome CampusEuropean Bioinformatics InstituteCambridgeUK
| | - Mary‐Anne Leung
- Children's Neurosciences CentreGuy's and St Thomas’ NHS Foundation TrustLondonUK
| | - Mark Mackay
- Department of PaediatricsThe University of MelbourneRoyal Children's HospitalMelbourneVic.Australia
- Murdoch Children's Research InstituteMelbourneVic.Australia
| | - Ingrid Scheffer
- Department of PaediatricsThe University of MelbourneRoyal Children's HospitalMelbourneVic.Australia
- Epilepsy Research CentreDepartment of MedicineThe University of MelbourneAustin HealthMelbourneVic.Australia
- Austin HealthFlorey Institute of Neurosciences and Mental HealthMelbourneVic.Australia
| | - Ruth Williams
- Children's Neurosciences CentreGuy's and St Thomas’ NHS Foundation TrustLondonUK
| | - Josemir W. Sander
- NIHR University College London Hospitals Biomedical Research CentreUCL Institute of NeurologyLondonUK
- Chalfont Centre for EpilepsyChalfont St PeterUK
- Stichting Epilepsie Instellingen Nederland (SEIN)HeemstedeThe Netherlands
| | - J. Helen Cross
- UCL Great Ormond Street Institute of Child HealthLondonUK
- Great Ormond Street Hospital for ChildrenLondonUK
- Young EpilepsyLingfieldUK
| | - Sanjay M. Sisodiya
- Department of Clinical and Experimental EpilepsyUCL Institute of NeurologyLondonUK
- Chalfont Centre for EpilepsyChalfont St PeterUK
| |
Collapse
|
14
|
Murgia F, Muroni A, Puligheddu M, Polizzi L, Barberini L, Orofino G, Solla P, Poddighe S, Del Carratore F, Griffin JL, Atzori L, Marrosu F. Metabolomics As a Tool for the Characterization of Drug-Resistant Epilepsy. Front Neurol 2017; 8:459. [PMID: 28928712 PMCID: PMC5591409 DOI: 10.3389/fneur.2017.00459] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 08/18/2017] [Indexed: 12/14/2022] Open
Abstract
Purpose Drug resistance is a critical issue in the treatment of epilepsy, contributing to clinical emergencies and increasing both serious social and economic burdens on the health system. The wide variety of potential drug combinations followed by often failed consecutive attempts to match drugs to an individual patient may mean that this treatment stage may last for years with suboptimal benefit to the patient. Given these challenges, it is valuable to explore the availability of new methodologies able to shorten the period of determining a rationale pharmacologic treatment. Metabolomics could provide such a tool to investigate possible markers of drug resistance in subjects with epilepsy. Methods Blood samples were collected from (1) controls (C) (n = 35), (2) patients with epilepsy “responder” (R) (n = 18), and (3) patients with epilepsy “non-responder” (NR) (n = 17) to the drug therapy. The samples were analyzed using nuclear magnetic resonance spectroscopy, followed by multivariate statistical analysis. Key findings A different metabolic profile based on metabolomics analysis of the serum was observed between C and patients with epilepsy and also between R and NR patients. It was possible to identify the discriminant metabolites for the three classes under investigation. Serum from patients with epilepsy were characterized by increased levels of 3-OH-butyrate, 2-OH-valerate, 2-OH-butyrate, acetoacetate, acetone, acetate, choline, alanine, glutamate, scyllo-inositol (C < R < NR), and decreased concentration of glucose, lactate, and citrate compared to C (C > R > NR). Significance In conclusion, metabolomics may represent an important tool for discovery of differences between subjects affected by epilepsy responding or resistant to therapies and for the study of its pathophysiology, optimizing the therapeutic resources and the quality of life of patients.
Collapse
Affiliation(s)
- Federica Murgia
- Department of Biomedical Science, University of Cagliari, Cagliari, Italy
| | - Antonella Muroni
- Azienda Ospedaliera Universitaria (A.O.U) of Cagliari, Cagliari, Italy
| | - Monica Puligheddu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Lorenzo Polizzi
- Azienda Ospedaliera Universitaria (A.O.U) of Cagliari, Cagliari, Italy
| | - Luigi Barberini
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Gianni Orofino
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Paolo Solla
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Simone Poddighe
- Department of Biomedical Science, University of Cagliari, Cagliari, Italy.,Unité de Chimie Environnementale et Interactions sur le Vivant, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Francesco Del Carratore
- Department of Biomedical Science, University of Cagliari, Cagliari, Italy.,Faculty of Life Sciences, Manchester Institute of Biotechnology, University of Manchester, Manchester, United Kingdom
| | - Julian L Griffin
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Luigi Atzori
- Department of Biomedical Science, University of Cagliari, Cagliari, Italy
| | - Francesco Marrosu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| |
Collapse
|