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Schiess N, Villabona-Rueda A, Cottier KE, Huether K, Chipeta J, Stins MF. Pathophysiology and neurologic sequelae of cerebral malaria. Malar J 2020; 19:266. [PMID: 32703204 PMCID: PMC7376930 DOI: 10.1186/s12936-020-03336-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [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] [Received: 11/25/2019] [Accepted: 07/13/2020] [Indexed: 12/14/2022] Open
Abstract
Cerebral malaria (CM), results from Plasmodium falciparum infection, and has a high mortality rate. CM survivors can retain life-long post CM sequelae, including seizures and neurocognitive deficits profoundly affecting their quality of life. As the Plasmodium parasite does not enter the brain, but resides inside erythrocytes and are confined to the lumen of the brain's vasculature, the neuropathogenesis leading to these neurologic sequelae is unclear and under-investigated. Interestingly, postmortem CM pathology differs in brain regions, such as the appearance of haemorragic punctae in white versus gray matter. Various host and parasite factors contribute to the risk of CM, including exposure at a young age, parasite- and host-related genetics, parasite sequestration and the extent of host inflammatory responses. Thus far, several proposed adjunctive treatments have not been successful in the treatment of CM but are highly needed. The region-specific CM neuro-pathogenesis leading to neurologic sequelae is intriguing, but not sufficiently addressed in research. More attention to this may lead to the development of effective adjunctive treatments to address CM neurologic sequelae.
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Affiliation(s)
- Nicoline Schiess
- Department of Neurology, Johns Hopkins School of Medicine, 600 N. Wolfe St., Meyer 6-113, Baltimore, MD, 21287, USA
| | - Andres Villabona-Rueda
- Malaria Research Institute, Dept Molecular Microbiology Immunology, Johns Hopkins School of Public Health, 615 N Wolfe Street, Baltimore, MD, 21205, USA
| | - Karissa E Cottier
- Malaria Research Institute, Dept Molecular Microbiology Immunology, Johns Hopkins School of Public Health, 615 N Wolfe Street, Baltimore, MD, 21205, USA.,BioIVT, 1450 South Rolling Road, Baltimore, MD, USA
| | | | - James Chipeta
- Department of Paediatrics, University Teaching Hospital, Nationalist Road, Lusaka, Zambia
| | - Monique F Stins
- Malaria Research Institute, Dept Molecular Microbiology Immunology, Johns Hopkins School of Public Health, 615 N Wolfe Street, Baltimore, MD, 21205, USA.
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Feldsine PT, Falbo-Nelson MT, Hustead DL, Aaronson J, Arling V, Baker M, Bozzuffi J, Bremer N, Chlebowski E, Clarke J, Crane A, Daniell E, Daugherty N, David J, Davis T, Diaz R, Donnelly S, Elwood M, Forgey R, Freshley J, Glowka L, Gottshall R, Graham R, Gray M, Griffith M, Hansen M, Harmon T, Herman R, Hofstrand P, Huether K, Irbys S, Jackey B, Jackson J, Jones T, Khasmakhi A, Lifur L, Linger T, MaCeda J, Mackin M, Marone C, McClure A, McDonagh S, Milligan L, Nelson J, Pandit K, Poole S, Rizzo M, Robinson J, Sparano R, Schriver J, Seibert M, Stone J, Summers D, Sweger L, Tebay D, Vera G, Weaver A, Wempe J, Wilkinson C, Willett J, Willoughby S, Zook T. Substrate Supporting Disc Method for Confirmed Detection of Total Coliforms and E. coli in all Foods: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/76.5.988] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
The Coli Complete® substrate supporting disc (SSD) method for simultaneous confirmed total coliform count and Escherichia coli determination in all foods was compared with AOAC most probable number (MPN) methods, 966.23 and 966.24. Twenty-nine laboratories participated in this collaborative study in which 6 food types were analyzed. Four food types, raw ground beef, pork sausage, raw liquid milk, and nut meats, were naturally contaminated with coliform bacteria. Two foods, dry egg and fresh frozen vegetables, were seeded with coliforms. Three food types, ground beef, raw liquid milk, and pork sausage, were naturally contaminated with E. coli. Although pork sausage was naturally contaminated, the level was very low (<10/50 g); therefore, additional E. coli were inoculated into 1 lot of this food type. Three food types, nut meats, dry egg, and fresh frozen vegetables, were inoculated with E. coli. For naturally contaminated samples, duplicate determinations were made on 3 separate lots for each food type. For inoculated samples, low, medium, and high contamination levels plus uninoculated control samples were examined in duplicate. Data were analyzed separately for total coliform bacteria and for E. coli. Mean log MPN counts were determined by the SSD method and the appropriate AOAC MPN method. Results were then analyzed for repeatability, reproducibility, and mean log MPN statistical equivalence. Results were statistically equivalent for all total coliform levels in all food types except frozen vegetable and raw nut meat uninoculated control samples and 1 lot of pork sausage where the SSD method produced statistically significant greater numbers. For the E. coli determinations, results were statistically equivalent across all samples and all levels for each food type. The SSD method has been adopted first action by AOAC International for confirmed detection of total coliforms and E. coli in all foods.
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Affiliation(s)
- Philip T Feldsine
- BioControl Systems, Inc., 19805 North Creek Parkway, Bothell, WA 98011
| | | | - David L Hustead
- BioControl Systems, Inc., 19805 North Creek Parkway, Bothell, WA 98011
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Schiess N, Huether K, Holroyd KB, Aziz F, Emam E, Shahrour T, Szolics M, Alsaadi T. Multiple Sclerosis, Anxiety, and Depression in the United Arab Emirates: Does Social Stigma Prevent Treatment? Int J MS Care 2019; 21:29-34. [PMID: 30833870 DOI: 10.7224/1537-2073.2017-041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background Depression rates in the multiple sclerosis (MS) population in the Arab world have rarely been reported despite people with MS generally having higher rates of depression. We examined depression rates in 416 people with MS versus the general population of Abu Dhabi, United Arab Emirates, and their treatment. Methods A retrospective medical record review of 416 people with MS (age range, 16-80 years) followed up at four large government hospitals in Abu Dhabi was conducted to determine the percentage of people with MS diagnosed as having depression or anxiety. Results The depression rate in people with MS (10.8%) was close to that in the general population of Abu Dhabi. The adjusted odds ratios of depression by selected variables showed that there was a significant difference (P = .003) between females and males in reporting depression, with more females reporting depression than males. Greater MS duration was also associated with a higher likelihood of being depressed (P = .025). The anxiety rate in the cohort (4.8%) was lower than that in the general Abu Dhabi population (18.7%). Conclusions The depression rate in people with MS in Abu Dhabi was close to that of the general Abu Dhabi population, but the anxiety rate in people with MS was lower. Explanations for these low rates include possible underreporting by patients and physician factors such as time limitations in busy clinics. Cultural aspects such as strong family support systems and religious factors in this predominantly Muslim population are also possible factors that warrant further investigation.
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Schiess N, Huether K, Szolics M, Agarwal G, El-Hattab A, Sathe S. Multiple sclerosis or “inflammatory CADASIL?”: Case Report and review of the literature. Clin Neurol Neurosurg 2018; 173:196-199. [DOI: 10.1016/j.clineuro.2018.01.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 01/14/2018] [Accepted: 01/28/2018] [Indexed: 11/16/2022]
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Ismail FY, Gordon-Lipkin E, Huether K, Blair I, Szólics M, Alsaadi T, Aziz F, Suleiman J, Schiess N. Pediatric Multiple Sclerosis in the United Arab Emirates: Characteristics From a Multicenter Study and Global Comparison. J Child Neurol 2018; 33:422-427. [PMID: 29607711 DOI: 10.1177/0883073818759103] [Citation(s) in RCA: 7] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We delineate the clinical characteristics, incidence, and prevalence of pediatric-onset multiple sclerosis in Abu Dhabi, United Arab Emirates, from 2010 to 2014. Eighty-two patients (65% female) were identified. Fifty-three (64.6%) were Emiratis (45 from Abu Dhabi and 8 from 5 other emirates) and 29 were expatriates. Mean age of onset was 15.9 years overall, 15.3 years in males and 16.3 years in females. Patients with onset before age 12 years presented with visual symptoms while those with onset after age 12 years presented with a mixture of visual, motor and sensory symptoms. Interferon beta-1a was the most frequently used disease-modifying therapy (48%). In Abu Dhabi Emirati nationals, the age- and sex-adjusted prevalences were 26/100 000 for males and 36/100 000 for females. The total incidence in Emirati nationals from 2010 to 2014 was 2.3/100 000 for ages 10 to 14 years and 7.2/100 000 for ages 15 to 19 years. By comparison with international cohorts, the incidence of pediatric-onset multiple sclerosis in Abu Dhabi is higher whereas gender distribution is similar.
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Affiliation(s)
- Fatima Y Ismail
- 1 Department of Neurology and Developmental Medicine, The Kennedy Krieger Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,2 Department of Pediatrics, United Arab Emirates University, Al Ain, UAE
| | - Eliza Gordon-Lipkin
- 1 Department of Neurology and Developmental Medicine, The Kennedy Krieger Institute, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | | | - Iain Blair
- 4 Institute of Public Health United Arab Emirates University, Al Ain, UAE
| | | | - Taoufik Alsaadi
- 6 American Center for Psychiatry and Neurology, Abu Dhabi, UAE
| | - Faisal Aziz
- 4 Institute of Public Health United Arab Emirates University, Al Ain, UAE
| | - Jehan Suleiman
- 2 Department of Pediatrics, United Arab Emirates University, Al Ain, UAE.,7 Division of Neurology, Department of Pediatrics, Tawam Hospital, Al Ain, UAE
| | - Nicoline Schiess
- 8 Department of Neurology, Johns Hopkins University, Baltimore, MD, USA
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Schiess N, Holroyd KB, Abdul Aziz FA, Huether K, Szolics M, Alsaadi T. The Rapidly Changing Landscape of Multiple Sclerosis Immunomodulatory Therapy: A Retrospective Chart Review in the United Arab Emirates. ACTA ACUST UNITED AC 2017. [DOI: 10.4172/2376-0389.1000203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Schiess N, Huether K, Fatafta T, Fitzgerald KC, Calabresi PA, Blair I, Alsaadi T, Szolics M. How global MS prevalence is changing: A retrospective chart review in the United Arab Emirates. Mult Scler Relat Disord 2016; 9:73-9. [PMID: 27645349 DOI: 10.1016/j.msard.2016.07.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 04/13/2016] [Revised: 06/21/2016] [Accepted: 07/06/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND Multiple Sclerosis (MS) is an autoimmune disorder leading to central nervous system inflammation. Traditionally, reported MS prevalence rates in the Middle East are low. Few studies include age/sex standardization giving an unreliable estimate of regional prevalence. OBJECTIVE to determine the prevalence, incidence and characteristics of MS in Abu Dhabi, United Arab Emirates. METHODS A retrospective chart review was conducted at the four largest hospitals in Abu Dhabi Emirate between 2010 and 2014. Data collected included MS type, age and symptoms at onset, expanded disability status scale, treatment, laboratory findings and family history. RESULTS 510 patients were identified consisting of 318 (62.2%) Emiratis and 192 (37.6%) expatriates. Total crude prevalence rate was 18/100,000 (95% CI: 10-30/100,000). Crude prevalence rate in Emiratis was 57.09 (95% CI:50 to 63/100,000) but increased to 64.44 (95% CI: 57 to 72/100,000) when age standardized. Age-standardized incidence rate in Emiratis was 6.0 MS cases per 100,000 person-years (95% CI: 5.5 to 6.5 cases per 100,000 person-years). CONCLUSION At 64.44/100,000, the Abu Dhabi Emirati population has one of the highest, most reliable prevalence rate on the Arab peninsula. Age/sex standardized prevalence rates, uncommonly reported in the Middle East, should be standard for all prevalence studies.
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Affiliation(s)
- Nicoline Schiess
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States.
| | - Katherine Huether
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
| | - Taghreed Fatafta
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
| | - Kathryn C Fitzgerald
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
| | - Peter A Calabresi
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
| | - Iain Blair
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
| | - Taoufik Alsaadi
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
| | - Miklos Szolics
- Johns Hopkins University, Neurology, 600 N. Wolfe St. Meyer 6-113, Baltimore, MD 21287, United States
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