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Latif M, Zahoor M, Muhammad A, Naz S, Kamran AW, Ullah R, Shah AB, Almeer R, Sayed A. Bioaccumulation of lead in different organs of Ctenopharyngodon Idella (grass fish) and Tor putitora (Mahseer) fish. BRAZ J BIOL 2024; 84:e260355. [DOI: 10.1590/1519-6984.260355] [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] [Received: 01/25/2022] [Accepted: 03/10/2022] [Indexed: 11/21/2022] Open
Abstract
Abstract Bioaccumulation of toxic heavy metals in the human body can give rise to adverse health effects, the severity of which depends upon their dosage and duration of exposure. In this study, yearlings of two different species of edible fish, i.e., Tor putitora (Mahseer) and Ctenopharyngodon Idella (grass carp), were exposed to different concentrations of lead nitrate in a controlled environment of aquarium for three different lengths of duration (14, 28, and 60 days). The bioaccumulation of lead in different organs, including gills, skin, muscles, liver, intestine, and swim bladder of the fish, was assessed using atomic absorption spectrometry. Generally, the highest lead concentration was observed in the gills and lowest in the muscles for both species at each experimental dosage and duration. In 14-days exposure, the relative pattern of bioaccumulation in different organs was observed as gill > liver > skin > intestine > swim bladder > muscle for both fish species. Similarly, the pattern of bioaccumulation observed in 28-days exposure was as: gill > liver > intestine > skin > swim bladder > muscle in both species. Whereas, pattern in 60-days exposure was observed as gill > liver > intestine > swim bladder > muscle > skin. The data shows that grass carp had stored higher concentrations of lead than Mahseer, which may be attributed to the fact that they are omnivorous. Furthermore, the lowest bioaccumulation was recorded in the muscles until the 56th day of the exposure, after which the concentration steadily increased in the muscles. The observed pattern highlights the importance of exposure’s duration to lead; chronic exposure could result in its bioaccumulation at toxic concentrations in the muscles, which is particularly of concern because the fish muscles are heavily consumed as food worldwide.
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Affiliation(s)
- M. Latif
- University of Peshawar, Islamia College, Pakistan
| | | | - A. Muhammad
- University of Peshawar, Islamia College, Pakistan
| | - S. Naz
- University of Malakand, Pakistan
| | | | - R. Ullah
- King Saud University, Saudi Arabia
| | - A. B. Shah
- Gyeongsang National University, Republic of South Korea
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2
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Mostafa RA, Emary A, Sayed A, El-Shimy M. Impact of short-duration voltage variations on VSC-HVDC performance. Sci Rep 2023; 13:23055. [PMID: 38155218 PMCID: PMC10754848 DOI: 10.1038/s41598-023-50362-3] [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: 08/03/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023] Open
Abstract
The growing load demand globally necessitates increasing the penetration of renewable energy sources into electrical grids as well as interconnecting grids from different countries and even continents through HVDC transmission systems. Since these applications rely on power electronics devices, several power quality issues arise, namely voltage sags and swells. This paper analyzes the response of a VSC-HVDC transmission system that interconnects two asynchronous AC grids to short-duration voltage variations like sag and swell by adjusting the voltage of the controllable AC source. The system is simulated with the help of MATLAB/Simulink. The study records the effect of the manipulated AC voltage on the active/reactive powers and AC/DC voltages at both converter stations to evaluate the system stability due to these prevalent power quality challenges. The obtained results reveal that the system hardly withstands voltage variation for a short period.
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Affiliation(s)
- Reem A Mostafa
- Electrical Power and Machines Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt.
| | - Adel Emary
- National Energy Control Center -Egyptian Electricity Transmission Company, Cairo, Egypt
| | - A Sayed
- Electrical Power and Machines Engineering Department, High Institute of Engineering, El Shorouk City, Cairo, Egypt
| | - M El-Shimy
- Electrical Power and Machines Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt
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3
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Bari A, Begum NAS, Nobi F, Rashid M, Arefin MSUZ, Nomany S, Rashid HU, Sayed A, Islam S. Varicella zoster virus and cytomegalovirus co-infection in a live related kidney transplant recipient: a case report. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-3847] [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: 11/16/2022] Open
Affiliation(s)
- Amit Bari
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Nura Afza Salma Begum
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Farnaz Nobi
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Mamunur Rashid
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | | | - Shoeb Nomany
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Harun Ur Rashid
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Abu Sayed
- Department of Urology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Sabbirul Islam
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
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4
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Rashid HU, Begum NAS, Arefin MSUZ, Nomany S, Nobi F, Sayed A, Rubel RA, Alam AKMK. Transplantation status, challenges and outlook: Bangladesh perspective. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-1964] [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: 11/16/2022] Open
Affiliation(s)
- Harun Ur Rashid
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Nura Afza Salma Begum
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | | | - Shoeb Nomany
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Farnaz Nobi
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Abu Sayed
- Department of Transplantation Surgery, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Ruhul Amin Rubel
- Department of Transplantation Surgery, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - A K M Khurshidul Alam
- Department of Transplantation Surgery, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
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5
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Begum NAS, Kashem TS, Nobi F, Akther N, Arefin MSUZ, Sayed A, Hasan S, Alam AKMK, Rashid HU. Basic characteristics of living kidney donors in Bangladesh: a single-center experience. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-3840] [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: 11/16/2022] Open
Affiliation(s)
- Nura Afza Salma Begum
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Tasnuva Sarah Kashem
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Farnaz Nobi
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Niyoti Akther
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | | | - Abu Sayed
- Department of Transplantation Surgery, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Sajid Hasan
- Department of Transplantation Surgery, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - A K M Khurshidul Alam
- Department of Transplantation Surgery, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Harun Ur Rashid
- Department of Nephrology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
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Rashid M, Bari A, Nobi F, Begum NAS, Arefin MSUZ, Nomani S, Sayed A, Rashid HU, Ahn C. Deceased organ transplantation: knowledge, awareness, and attitude among health care professionals in Bangladesh. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-4026] [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: 11/16/2022] Open
Affiliation(s)
- Mamunur Rashid
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | - Amit Bari
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | - Farnaz Nobi
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | - Nura Afza Salma Begum
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | | | - Shoeb Nomani
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | - Abu Sayed
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | - Harun Ur Rashid
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
| | - Curie Ahn
- Department of Nephrology, Kidney Foundation Hospital and Research Institute Bangladesh, Dhaka, Bangladesh
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Sayed A, Aldosoky W, Khalid N, Diab M, Elsaiey A, Dar T, Abohashem S. Impact of unemployment on cardiovascular mortality in united states: a nationwide county-level analysis 2010–2019. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2250] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Unemployment has been linked with a myriad of adverse health outcomes; however, its population-level impact on cardiovascular mortality (CVM), particularly amongst various demographic subgroups, remains understudied.
Purpose
To determine the impact of county unemployment levels on CVM rates, in overall and between different demographic subgroups.
Methods
We utilized the CDC WONDER database tool to retrieve county-level CVM rates for U.S. counties between 2010 and 2019. The County Health Rankings project was used to retrieve data on unemployment levels in each county as well as other characteristics used in an adjusted multivariate model. Generalized linear mixed models using Poisson regression were used to estimate the impact of unemployment on county-level CVM using relative (incidence rate ratios; IRR) and absolute (additional yearly deaths; AYD) measures.
Results
From 2010 to 2019, a total of 2904 U.S. counties (64.2% white; 50.81% female) with data available on CVM and unemployment levels were analyzed. In a multivariate model adjusted for demographic composition, CV risk, socioeconomic, environmental, and healthcare-access factors, unemployment was significantly associated with higher levels of CVM (IRR: 1.026; 95% CI: 1.018 to 1.033; 6.00 AYD). The relative impact of unemployment was strongest in elderly Blacks (IRR: 1.051; 95% CI: 1.029 to 1.074), middle-aged whites (IRR: 1.050; 95% CI: 1.032 to 1.067), and middle-aged females (IRR: 1.046; 95% CI: 1.018 to 1.075). The absolute impact of unemployment was highest in elderly Blacks (AYD: 94.70), elderly Whites (AYD: 35.30), and elderly females (AYD: 32.70). On a relative basis, the impact was more pronounced in the middle-aged (IRR: 1.030; 95% CI: 1.015 to 1.044) compared to the elderly (IRR: 1.022; 95% CI: 1.014 to 1.030), females (IRR: 1.026; 95% CI: 1.017 to 1.036) compared to males (IRR: 1.022; 95% CI: 1.014 to 1.031), and Blacks (IRR: 1.036; 95% CI: 1.016 to 1.057) compared to Whites (IRR: 1.030; 95% CI: 1.022 to 1.038).
Conclusion(s)
Unemployment is significantly associated with county-level CVM, and this impact is most pronounced in vulnerable demographic subgroups, namely females and Blacks. Efforts to reduce unemployment levels may significantly lower the burden of cardiovascular disease, particularly in groups most strongly affected by health disparities.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- A Sayed
- Ain Shams University , Cairo , Egypt
| | - W Aldosoky
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - N Khalid
- Mansoura University , Mansoura , Egypt
| | - M Diab
- Zagazig University , Zagazig , Egypt
| | - A Elsaiey
- The Methodist Hospital , Houston , United States of America
| | - T Dar
- University of Miami Leonard M. Miller School of Medicine , Miami , United States of America
| | - S Abohashem
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
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Abohashem S, Aldosoky W, Sayed A, Khalid N, Abbasi T, Mir T. Impact of sexually transmitted infections on cardiovascular mortality in united states: a nationwide county-level analysis 2011–2019. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2249] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Sexually Transmitted Infections (STIs) are associated with a significantly increased risk of morbidity and mortality; however, its population-level effect on cardiovascular mortality (CVM), particularly amongst various demographic subgroups, remains unknown.
Purpose
To assess the impact of county STIs levels on CVM rates, in overall and between different patient groups stratified by age, sex and race.
Methods
The CDC WONDER database tool was utilized to retrieve age adjusted county-level CVM rates (ACVM) for U.S. counties between 2011 and 2019. Data on STIs were provided by the County Health Rankings project database. STIs is the number of newly diagnosed chlamydia (the most common STI in north America) cases per 100,000 population in a county. Rates measure the number of events in a given time period (generally one year) divided by the average number of people at risk during that period. The Behavioral risk Factors Surveillance System and County Health Rankings project were used to retrieve county data on demographics, CV risk, socioeconomic, environmental, and health care access factors. Generalized linear mixed models using Poisson regression were used to estimate the impact of unemployment on county-level CVM using relative (incidence rate ratios; IRR) and absolute (additional yearly deaths; AYD) measures.
Results
Of 3143 U.S. counties, a total of 2890 counties (62.09% white; 50.76% female; 14.12% aged ≥65) with data available on ACVM and STIs levels were analyzed. In a multivariate model adjusted for demographic composition, CV risk, socioeconomic, environmental, and healthcare-access factors, STIs were significantly associated with higher levels of ACVM (IRR: 1.015; 95% CI: 1.007 to 1.022; 3.40 AYD). Additionally, this association was relatively higher in the middle-aged [45–64] (IRR: 1.016; 95% CI: 1.002 to 1.030) compared to the elderly [≥65] (IRR: 1.010; 95% CI: 1.002 to 1.018), males (IRR: 1.013; 95% CI: 1.004 to 1.021) compared to females (IRR: 1.011; 95% CI: 1.002 to 1.020), and non-Hispanic Blacks (IRR: 1.026; 95% CI: 1.011 to 1.040) compared to non-Hispanic Whites (IRR: 1.010; 95% CI: 1.002 to 1.018). Notably, the relative impact of STIs was highest in middle-aged non-Hispanic Blacks (IRR: 1.038; 95% CI: 1.013 to 1.063; AYD: 10.50), and middle-aged males (IRR: 1.021; 95% CI: 1.006 to 1.037; AYD: 4.30), (Figure).
Conclusions
STIs is robustly associated with county-level ACVM, independent from several important confounders. This impact is most prominent in vulnerable demographic subgroups, namely middle-aged, males, and Blacks. Efforts to reduce STIs levels may significantly lower the burden of cardiovascular mortality attributable to STIs, particularly in groups most frequently affected by health disparities.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Abohashem
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - W Aldosoky
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - A Sayed
- Ain Shams University , Cairo , Egypt
| | - N Khalid
- Mansoura University , Mansoura , Egypt
| | - T Abbasi
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - T Mir
- Wayne State University , Detroit , United States of America
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Abohashem S, Sayed A, Aldosoky W, Elsaiey A, Dar T, Abbasi T. Impact of sleep insufficiency on cardiovascular mortality in United States: a nationwide county-level analysis 2016–2019. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2452] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Sleep plays an integrated role in health maintenance including cardiovascular (CV) health. Sleep Insufficiency (SI) is a common modifiable risk condition that is strongly linked to major adverse CV events and mortality. However, data on the overall impact and related disparities of SI on CV mortality (CVM), at nationwide level and within different patient groups, are scarce and uncertain.
Purpose
Herein, we aim to study the independent relationship between county level SI and CVM in overall population and within various age, sex, and race/ethnic subgroups.
Methods
Using the Behavioral risk Factors Surveillance System (BRFSS), SI county levels were assessed as the percentage of adults who report fewer than the recommended level of optimal sleep duration (<7 hours). Age-adjusted CVM rates (ACVM) between 2016 to 2019, were obtained using wide-ranging online data for epidemiologic research tool of Centers for Disease and Prevention (CDC). BRFSS, CDC diabetes interactive atlas, census population estimates, environmental public network, and county health rankings databases, were utilized to acquire county data of demographics, CV risk, socio-environmental, and health care access factors. Poisson multivariate generalized linear mixed models were employed to assess incidence rate ratios (IRR). To evaluate the absolute impact of SI on ACVM, additional yearly deaths per 100,000 individuals (AYD) were calculated.
Results
Among 3143 US counties, 2853 counties who had data on SI and ACVM, were analyzed. Of 321,625,744 residents (50.8% women, 12.4% non-Hispanic blacks, 15% aged ≥65) lived at 2853 US counties in 2016, total 3,408,047 (1.1%) CV deaths occurred between 2016–2019. In fully adjusted analysis*, SI significantly associated with overall ACVM (IRR: 1.021; 95% CI: 1.013 to 1.029), that translated to 4.6 AYD. In additional subgroup analysis, SI significantly associated with higher ACVM among middle aged adults [45 to 64] (IRR: 1.024; 95% CI: 1.010 to 1.038), elderly [≥65] (IRR: 1.022; 95% CI: 1.014 to 1.030), males (IRR: 1.019; 95% CI: 1.010 to 1.028), females (IRR: 1.023; 95% CI: 1.013 to 1.033), and in non-Hispanic whites (IRR: 1.024; 95% CI: 1.016 to 1.033). Notably, this association remained significant in the (≥65) aged subgroup of males, and females, as well as in both age subgroups of the non-Hispanic whites, (Figure).
Conclusion
County level SI is robustly related to high ACVM, and that relationship is most apparent amongst both age and sex subgroups as well as non-Hispanic whites. Moreover, this association is significantly independent of potential confounders that have a plausible association with CVM, such as demographics, socioeconomic, environmental, health care access, and cardiovascular risk factors. Therefore, tailored population-level strategies to promote healthy sleep pattern and reduce the prevalence of SI, are imperative for preventing CVM, especially in the most impacted communities and patient subgroups.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Abohashem
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - A Sayed
- Ain Shams University , Cairo , Egypt
| | - W Aldosoky
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - A Elsaiey
- The Methodist Hospital , Houston , United States of America
| | - T Dar
- University of Miami Leonard M. Miller School of Medicine , Miami , United States of America
| | - T Abbasi
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
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Abohashem S, Sayed A, Aldosoky W, Diab M, Mir T, Sattar Y, Dar T. Burden and disparities in cardiovascular mortality rates associated with obesity prevalence in United States: county-level analysis from 2010 to 2019. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2398] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Obesity is a grave public health threat linked to high morbidity and mortality rates. A significant rise in obesity rates amongst U.S. adults and worldwide has been observed in recent decades. Although associations between obesity and cardiovascular mortality (CVM) are well-known, impact and disparities in CVM attributable to obesity at a nationwide community level, aren't well defined.
Purpose
At county level, we sought to evaluate the independent impact of adult obesity on CVM in overall population and within different age, sex, and race/ethnic subgroups.
Methods
Age-adjusted CVM rates (ACVM) between 2010 to 2019, were obtained using Wide-ranging Online Data for Epidemiologic Research tool of Center for Disease Control (CDC). Using the Behavioral risk Factors Surveillance System (BRFSS), obesity rates per county was assessed as the percentage of adult population (age ≥20) that reports a body mass index ≥30 kg/m2. BRFSS, CDC Diabetes Interactive Atlas, census population estimates, environmental public health network and health county ranking project databases, were utilized to acquire county data of demographics, CV risk, socio-environmental, and health care access factors. Poisson multivariate generalized linear mixed models were employed to assess incidence rate ratios (IRR) of ACVM associated with obesity rates. To evaluate the absolute impact of obesity on ACVM, additional yearly deaths (AYD) per 100,000 individuals were calculated. All study analysis were weighted for the relevant county baseline population.
Results
Among 307,045,647 residents (50% women, 12% non-Hispanic blacks, 24% aged 45–64) lived at 2904 US counties in 2010, total 8,157,571 (2.7%) CV deaths occurred between 2010–2019. In fully adjusted model*, high obesity rates significantly associated with high ACVM (IRR: 1.015; 95% CI: 1.008 to 1.022), that translated to 3.5 AYD per 100,000 individuals. In a subgroup analysis, obesity rates associated with a relatively higher ACVM among overall middle aged adults [45 to 64] (IRR: 1.028; 95% CI: 1.018 to 1.037) versus elderly [≥65] (IRR: 1.013; 95% CI: 1.006 to 1.020), and in males (IRR: 1.018; 95% CI: 1.010 to 1.026) versus females (IRR: 1.014; 95% CI: 1.006 to 1.022), and in Hispanics (IRR: 1.035; 95% CI: 1.005 to 1.065) versus non-Hispanic Whites (IRR: 1.020; 95% CI: 1.012 to 1.027). Interestingly, middle aged adults had higher ACVM IRRs as compared to elderly, among males (IRR: 1.022), females (IRR: 1.039), and non-Hispanic Whites (IRR: 1.044) (Figure).
Conclusions
Obesity prevalence is independently associated with high ACVM among different age, sex, and race/ethnic groups, and this impact is most pronounced in Hispanics and the middle-aged group of females and non-Hispanic Whites. More research is needed to further uncover the mechanisms leading to these observations a long with community-level interventions to reduce the burden of this ongoing epidemic, in overall and most impacted population groups.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Abohashem
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - A Sayed
- Ain Shams University , Cairo , Egypt
| | - W Aldosoky
- Massachusetts General Hospital - Harvard Medical School , Boston , United States of America
| | - M Diab
- Zagazig University , Zagazig , Egypt
| | - T Mir
- Wayne State University , Detroit , United States of America
| | - Y Sattar
- West Virginia University Hospital , Morgantown , United States of America
| | - T Dar
- University of Miami Leonard M. Miller School of Medicine , Miami , United States of America
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Shalaby M, Sayed A, Awad AK, Moustafa K, Okasha O, Hariri E, Abdelfattah OM. Omecamtiv mecarbil in heart failure with reduced ejection fraction: systematic review and meta-analysis. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Heart failure (HF) is a growing public health challenge worldwide, with high rates of mortality and morbidity. Omecamtiv Mecarbil (OM) is a cardiac myosin activator and the first of a novel class of myotropes, agents that directly improve myocardial function by selectively improving cardiac sarcomere function. Data on its effect on cardiovascular outcomes remains scarce.
Objectives
To evaluate the safety and efficacy of Omecamtiv Mecarbil in Heart Failure with Reduced Ejection Fraction (HFrEF) and its effect on mid-term clinical outcomes.
Methods
We systematically searched MEDLINE/Pubmed, CENTRAL, clinicaltrials.gov, and the International Clinical Trials Registry Platform for randomized clinical trials (RCTs) evaluating OM safety and efficacy in HFrEF. Outcomes of interest included all-cause mortality, cerebrovascular events, hospitalization, myocardial infarction (MI), anginal events, atrial fibrillation (AF) or flutter, and hypotension. Data screening and extraction was performed by two independent reviewers. We used a random-effects model using the Dersimonian-Laird and Mantel-Haenszel methods to calculate the risk ratio (RR) with 95% confidence intervals.
Results
A total of 232 records were identified, of which six RCTs (N = 9,547; Omecamtiv: 4,889; Placebo: 4,658) met inclusion criteria. The average age was 64.4 years (standard deviation (SD): 0.82), and 79.0% (N = 7,538) were males. The weighted follow-up duration was 19.4 months. OM was associated with a significant reduction in the incidence of cerebrovascular events (RR: 0.68; 95% CI: 0.51 to 0.91). Moreover, OM was associated with a significant increase in the risk of hypotension (RR: 1.45; 95% CI: 1.03 to 2.02), compared to placebo when utilized as an adjuvant therapy to HF guideline-directed medical therapy (GDMT). No statistically significant difference was noted with all-cause mortality (RR: 1.00; 95% CI: 0.93 to 1.07), hospitalization (RR: 0.96; 95% CI: 0.90 to 1.03), incidence of atrial fibrillation or flutter (RR: 0.79; 95% CI: 0.61 to 1.02), anginal events (RR: 1.32; 95% CI: 0.92 to 1.88) or myocardial infarction (RR: 1.07; 95% CI: 0.84 to 1.36). Heterogeneity was low (I2 = 0%) in all analyses.
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Affiliation(s)
| | - A Sayed
- Ain Shams University, Cairo, Egypt
| | - AK Awad
- Ain Shams University, Cairo, Egypt
| | - K Moustafa
- Alexandria University, Department of Medicine, Alexandria, Egypt
| | - O Okasha
- University of Missouri, Department of Medicine, Kansas City, United States of America
| | - E Hariri
- Cleveland Clinic Foundation, Department of Medicine, Cleveland, United States of America
| | - OM Abdelfattah
- Morristown Medical Center, Morristown, United States of America
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12
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K Awad A, Elseidy S, Elgenidy A, Elbadawy MA, Sayed A, Mohamad T. Asymptomatic severe aortic stenosis, conservative treatment or early valve replacement? a systematic review and meta-analysis. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.064] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Asymptomatic aortic stenosis’ management is not only a daily practice challenge but also an area of clinical research controversy. As evidence on conservative versus early aortic valve replacement (AVR) is debatable, we conducted a systematic review and meta-analysis to compare the efficacy of conservative management versus AVR in asymptomatic aortic stenosis (AS).
Methods
Electronic databases were systematically searched to identify any observational or interventional studies that compared the effects of conservative management versus AVR on all causes, cardiovascular, non-cardiovascular mortality. Pooled risk ratios (RR) and their 95% confidence intervals (CI) were calculated using random-effects models.
Results
A total of 6216 patients were included from 12 studies (observational=9, and randomized clinical trial=3) with a mean follow-up duration of 50 months. When compared to early AVR, conservative management has statistically significant higher risk of all causes mortality (RR: 0.36, 95%CI [0.31 to 0.42], p<0.00001, figure 1), cardiovascular mortality (RR: 0.32, 95%CI [0.24 to 0.41], p<0.00001, figure 2), and non-cardiovascular mortality (RR: 0.42, 95%CI [0.24 to 0.56], p=0.0005). Regarding other complications, conservative treatment showed significant higher risk of sudden cardiac death (RR: 0.46, 95%CI [0.15 to 0.90], p=0.005), yet with no difference over AVR in stroke and myocardial infarction (RR: 0.79, 95% CI [0.17 to 3.64], p=0.61) and (RR: 0.67, 95% CI [0.39 to 1.16], p=0.15), respectively. A subgroup sensitivity analysis based on surgical AVR vs. transcatheter AVR and severe vs. very severe AS reflected the findings of the overall results.
Conclusions
Patients with asymptomatic aortic valve stenosis, managed with early AVR, have a lower risk of all-cause, cardiovascular, and non-cardiovascular mortality when compared to conservative management.
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Affiliation(s)
- A K Awad
- Ain Shams University, Cairo, Egypt
| | - S Elseidy
- University of Texas health sciences, Texas City, United States of America
| | | | | | - A Sayed
- Ain Shams University, Cairo, Egypt
| | - T Mohamad
- Wayne State University, Detroit, United States of America
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13
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Abohashem S, Sayed A, Aldosoky W, Dar T, Abbasi T. Impact of physical inactivity on cardiovascular mortality in united states: county-level analysis from 2011 to 2019. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.124] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Physical inactivity and sedentary behavior are among the leading modifiable risk factors worldwide for cardiovascular (CV) disease and mortality. However, data about disparities of CV mortality related to physical inactivity, has been limited and/or inconsistent.
Purpose
We sought to evaluate county-level associations between physical inactivity and cardiovascular mortality (CVM) in overall population and among different age, gender, and racial/ethnic subgroups.
Methods
Age-adjusted CV mortality rates (ACVM) between 2011 to 2019, were obtained using Wide-ranging Online Data for Epidemiologic Research tool of Center for Disease Control (CDC). Behavioral Risk Factors Surveillance System, CDC Diabetes Interactive Atlas, Census population estimates, environmental public health network and drinking water information system, were utilized to acquire county physical inactivity levels (percentage of adults reporting no physical activity in past month), demographics, rates of obesity, diabetes, smoking and environmental factors. Poisson generalized linear mixed models were employed to assess incidence rate ratios (IRR) of ACVM associated with physical inactivity while adjusting for other potential confounders. The burden of additional yearly deaths (AYD) per 100,000 individuals was calculated by multiplying the baseline CV death rates by the percentage increase attributable to physical inactivity in each subgroup.
Results
Among 303,857,140 residents (49.5% men, 11.9% non-Hispanic blacks, 23.8% [45-64 age group]) lived at 2900 US counties in 2011, total 7,226,447 (2.4%) CV deaths occurred between 2011-2019. In fully adjusted model*, physical inactivity significantly associated with high ACVM (IRR: 1.02; 95% CI: 1.01 to 1.02), that translated to 4.4 AYD per 100,000 individuals. Notably, physical inactivity associated with a relatively higher ACVM among middle aged adults [45 to 64] (IRR: 1.04; 95% CI: 1.03 to 1.04) versus elderly [≥65] (IRR: 1.02; 95% CI: 1.01 to 1.02), and in males (IRR: 1.03; 95% CI: 1.02 to 1.03) versus females (IRR: 1.01; 95% CI: 1.01 to 1.02). Interestingly, middle aged adults were relatively most impacted by physical inactivity as compared to elderly, among each of gender and racial/ethnic subgroups, (Figure). Additionally, physical inactivity seemed to have similar impact on both non-Hispanic whites (IRR: 1.02), and non-Hispanic blacks (IRR: 1.02), with a slightly larger impact among Hispanics (IRR: 1.03), (Figure).
Conclusion
Physical inactivity is robustly associated with age-adjusted CVM independent of other well-established determinants of CV death, including CV risk factors, socioeconomic, environmental and health care access factors. Physical inactivity appears to confer greater negative impact among middle-aged adults, males, and Hispanic individuals. Therefore, public health policies directed towards greater efforts at preventing sedentary behavior and promoting adequate physical activity, are desperately needed.
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Affiliation(s)
- S Abohashem
- Massachusetts General Hospital - Harvard Medical School, Boston, United States of America
| | - A Sayed
- Ain Shams University, Cairo, Egypt
| | - W Aldosoky
- Massachusetts General Hospital - Harvard Medical School, Boston, United States of America
| | - T Dar
- University of Miami Leonard M. Miller School of Medicine, Miami, United States of America
| | - T Abbasi
- Massachusetts General Hospital - Harvard Medical School, Boston, United States of America
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14
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Sayed A, Aldosoky W, Mir T, Dar T, Abbasi T, Abohashem S. Impact of food insecurity on cardiovascular mortality in united states: county-level analysis from 2014 to 2019. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.113] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Food insecurity is a global public health challenge, that is defined as a social condition of limited or uncertain access to adequate food. Food insecurity is significantly linked to a myriad of negative health outcomes including high risk of cardiovascular (CV) morbidities and mortality. However, data on disparities of CV mortality attributable to food insecurity, is limited.
Purpose
We sought to investigate the independent association between food insecurity and cardiovascular mortality among age, gender, and race/ethnicity subgroups.
Methods
Age-adjusted CV mortality rates (ACVM) between 2014 to 2019, were obtained using Wide-ranging Online Data for Epidemiologic Research tool of Center for Disease Control (CDC). Food insecurity levels were obtained using the Core Food Insecurity Model. Census population estimates, CDC Diabetes Interactive Atlas, and the Behavioral Risk Factors Surveillance System, were utilized to acquire county-level demographics, rates of obesity, diabetes, and smoking data. Poisson generalized linear mixed models were employed to assess incidence rate ratios (IRR) of CV mortality associated with food insecurity while adjusting for other potential confounders. The burden of additional yearly deaths (AYD) per 100,000 individuals was calculated by multiplying the baseline CV death rates by the percentage increase attributable to food insecurity in each subgroup.
Results
Of 317,203,618 residents (49.6% men, 12.1% black) lived at 2878 US counties in 2014, total 4,933,002 (1.6%) CV deaths occurred between 2014-2019. In fully adjusted model*, food insecurity significantly associated with high levels of ACVM (IRR: 1.03; 95% CI: 1.02 to 1.04), that translated to 6.9 AYD per 100,000 individuals. Notably, food insecurity associated with a relatively higher ACVM among middle aged adults [45 to 64] (IRR: 1.04) as compared to elderly [≥65] (IRR: 1.02), and in non-Hispanic blacks (IRR: 1.05) versus non-Hispanic whites (IRR: 1.03). Interestingly, food insecurity had a relatively larger impact on middle aged adults among non-Hispanic whites (IRR: 1.07; 10.6 AYD), while among non-Hispanic blacks, elderly group were most impacted (IRR: 1.05; 76.5 AYD). Additionally, ACVM associated with food insecurity, was significantly similar among males (IRR: 1.03), and females (IRR: 1.03), with a greater impact among middle aged subgroup of each gender (IRR: 1.06; IRR: 1,04, respectively), (Figure).
Conclusion
Food insecurity is strongly associated with county-level age-adjusted CV mortality, independent of other well-established determinants of CV death, including CV risk factors, socioeconomic, environmental and health care access factors. Food insecurity has the greatest impact among those most vulnerable and disadvantaged, namely middle-aged adults and non-Hispanic black individuals. Accordingly, reducing levels of food insecurity, and addressing disparities in associated CV mortality rates, are an emergent public health priority.
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Affiliation(s)
- A Sayed
- Ain Shams University, Cairo, Egypt
| | - W Aldosoky
- Massachusetts General Hospital - Harvard Medical School, Boston, United States of America
| | - T Mir
- Wayne State University, Detroit, United States of America
| | - T Dar
- University of Miami Leonard M. Miller School of Medicine, Miami, United States of America
| | - T Abbasi
- Massachusetts General Hospital - Harvard Medical School, Boston, United States of America
| | - S Abohashem
- Massachusetts General Hospital - Harvard Medical School, Boston, United States of America
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15
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Begum NAS, Kashem TS, Arefin MSUZ, Alam AKMK, Hasan MS, Sayed A, Mitali EJ, Haque SA, Rashid HU. Experience of starting ABO incompatible kidney transplantation in Bangladesh: report of seven cases. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.op-1067] [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: 11/04/2022] Open
Affiliation(s)
- Nura Afza Salma Begum
- Department of Nephrology and Transplantation, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Tasnuva Sarah Kashem
- Department of Nephrology and Transplantation, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | | | - AKM Khurshidul Alam
- Department of Urology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Md. Sajid Hasan
- Department of Urology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Abu Sayed
- Department of Urology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | - Esrat Jahan Mitali
- Department of Pathology, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
| | | | - Harun Ur Rashid
- Department of Nephrology and Transplantation, Kidney Foundation Hospital and Research Institute, Dhaka, Bangladesh
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16
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Kashem TS, Begum NAS, Sayed A, Arefin S, Alam K, Amin R, Rashid HU. An unusual and late presentation of urinary leak post-kidney transplantation requiring ureteroureterostomy at the single tertiary center of Bangladesh: a case report. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.or-1196] [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: 11/04/2022] Open
Affiliation(s)
| | - NAS Begum
- Department of Nephrology, Kidney Foundation Hospital, Dhaka, Bangladesh
| | - A Sayed
- Department of Nephrology, Kidney Foundation Hospital, Dhaka, Bangladesh
| | - S Arefin
- Department of Nephrology, Kidney Foundation Hospital, Dhaka, Bangladesh
| | - K Alam
- Department of Nephrology, Kidney Foundation Hospital, Dhaka, Bangladesh
| | - R Amin
- Department of Nephrology, Kidney Foundation Hospital, Dhaka, Bangladesh
| | - HU Rashid
- Department of Nephrology, Kidney Foundation Hospital, Dhaka, Bangladesh
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17
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Boulle A, Davies MA, Hussey H, Ismail M, Morden E, Vundle Z, Zweigenthal V, Mahomed H, Paleker M, Pienaar D, Tembo Y, Lawrence C, Isaacs W, Mathema H, Allen D, Allie T, Bam JL, Buddiga K, Dane P, Heekes A, Matlapeng B, Mutemaringa T, Muzarabani L, Phelanyane F, Pienaar R, Rode C, Smith M, Tiffin N, Zinyakatira N, Cragg C, Marais F, Mudaly V, Voget J, Davids J, Roodt F, van Zyl Smit N, Vermeulen A, Adams K, Audley G, Bateman K, Beckwith P, Bernon M, Blom D, Boloko L, Botha J, Boutall A, Burmeister S, Cairncross L, Calligaro G, Coccia C, Corin C, Daroowala R, Dave JA, De Bruyn E, De Villiers M, Deetlefs M, Dlamini S, Du Toit T, Endres W, Europa T, Fieggan G, Figaji A, Frankenfeld P, Gatley E, Gina P, Govender E, Grobler R, Gule MV, Hanekom C, Held M, Heynes A, Hlatswayo S, Hodkinson B, Holtzhausen J, Hoosain S, Jacobs A, Kahn M, Kahn T, Khamajeet A, Khan J, Khan R, Khwitshana A, Knight L, Kooverjee S, Krogscheepers R, Kruger JJ, Kuhn S, Laubscher K, Lazarus J, Le Roux J, Lee Jones S, Levin D, Maartens G, Majola T, Manganyi R, Marais D, Marais S, Maritz F, Maughan D, Mazondwa S, Mbanga L, Mbatani N, Mbena B, Meintjes G, Mendelson M, Möller E, Moore A, Ndebele B, Nortje M, Ntusi N, Nyengane F, Ofoegbu C, Papavarnavas N, Peter J, Pickard H, Pluke K, Raubenheimer PJ, Robertson G, Rozmiarek J, Sayed A, Scriba M, Sekhukhune H, Singh P, Smith E, Soldati V, Stek C, van den berg R, van der Merwe LR, Venter P, Vermooten B, Viljoen G, Viranna S, Vogel J, Vundla N, Wasserman S, Zitha E, Lomas-Marais V, Lombard A, Stuve K, Viljoen W, Basson DV, Le Roux S, Linden-Mars E, Victor L, Wates M, Zwanepoel E, Ebrahim N, Lahri S, Mnguni A, Crede T, de Man M, Evans K, Hendrikse C, Naude J, Parak M, Szymanski P, Van Koningsbruggen C, Abrahams R, Allwood B, Botha C, Botha MH, Broadhurst A, Claasen D, Daniel C, Dawood R, du Preez M, Du Toit N, Erasmus K, Koegelenberg CFN, Gabriel S, Hugo S, Jardine T, Johannes C, Karamchand S, Lalla U, Langenegger E, Louw E, Mashigo B, Mhlana N, Mnqwazi C, Moodley A, Moodley D, Moolla S, Mowlana A, Nortje A, Olivier E, Parker A, Paulsen C, Prozesky H, Rood J, Sabela T, Schrueder N, Sithole N, Sithole S, Taljaard JJ, Titus G, Van Der Merwe T, van Schalkwyk M, Vazi L, Viljoen AJ, Yazied Chothia M, Naidoo V, Wallis LA, Abbass M, Arendse J, Armien R, Bailey R, Bello M, Carelse R, Forgus S, Kalawe N, Kariem S, Kotze M, Lucas J, McClaughlin J, Murie K, Najjaar L, Petersen L, Porter J, Shaw M, Stapar D, Williams M, Aldum L, Berkowitz N, Girran R, Lee K, Naidoo L, Neumuller C, Anderson K, Begg K, Boerlage L, Cornell M, de Waal R, Dudley L, English R, Euvrard J, Groenewald P, Jacob N, Jaspan H, Kalk E, Levitt N, Malaba T, Nyakato P, Patten G, Schneider H, Shung King M, Tsondai P, Van Duuren J, van Schaik N, Blumberg L, Cohen C, Govender N, Jassat W, Kufa T, McCarthy K, Morris L, Hsiao NY, Marais R, Ambler J, Ngwenya O, Osei-Yeboah R, Johnson L, Kassanjee R, Tamuhla T. Risk Factors for Coronavirus Disease 2019 (COVID-19) Death in a Population Cohort Study from the Western Cape Province, South Africa. Clin Infect Dis 2021; 73:e2005-e2015. [PMID: 32860699 PMCID: PMC7499501 DOI: 10.1093/cid/ciaa1198] [Citation(s) in RCA: 300] [Impact Index Per Article: 100.0] [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: 07/12/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Risk factors for coronavirus disease 2019 (COVID-19) death in sub-Saharan Africa and the effects of human immunodeficiency virus (HIV) and tuberculosis on COVID-19 outcomes are unknown. METHODS We conducted a population cohort study using linked data from adults attending public-sector health facilities in the Western Cape, South Africa. We used Cox proportional hazards models, adjusted for age, sex, location, and comorbidities, to examine the associations between HIV, tuberculosis, and COVID-19 death from 1 March to 9 June 2020 among (1) public-sector "active patients" (≥1 visit in the 3 years before March 2020); (2) laboratory-diagnosed COVID-19 cases; and (3) hospitalized COVID-19 cases. We calculated the standardized mortality ratio (SMR) for COVID-19, comparing adults living with and without HIV using modeled population estimates. RESULTS Among 3 460 932 patients (16% living with HIV), 22 308 were diagnosed with COVID-19, of whom 625 died. COVID-19 death was associated with male sex, increasing age, diabetes, hypertension, and chronic kidney disease. HIV was associated with COVID-19 mortality (adjusted hazard ratio [aHR], 2.14; 95% confidence interval [CI], 1.70-2.70), with similar risks across strata of viral loads and immunosuppression. Current and previous diagnoses of tuberculosis were associated with COVID-19 death (aHR, 2.70 [95% CI, 1.81-4.04] and 1.51 [95% CI, 1.18-1.93], respectively). The SMR for COVID-19 death associated with HIV was 2.39 (95% CI, 1.96-2.86); population attributable fraction 8.5% (95% CI, 6.1-11.1). CONCLUSIONS While our findings may overestimate HIV- and tuberculosis-associated COVID-19 mortality risks due to residual confounding, both living with HIV and having current tuberculosis were independently associated with increased COVID-19 mortality. The associations between age, sex, and other comorbidities and COVID-19 mortality were similar to those in other settings.
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Affiliation(s)
| | - Andrew Boulle
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Mary-Ann Davies
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Hannah Hussey
- Health Impact Assessment, Western Cape Government: Health
- School of Public Health and Family Medicine, University of Cape Town
| | - Muzzammil Ismail
- Health Impact Assessment, Western Cape Government: Health
- School of Public Health and Family Medicine, University of Cape Town
| | - Erna Morden
- Health Impact Assessment, Western Cape Government: Health
- School of Public Health and Family Medicine, University of Cape Town
| | - Ziyanda Vundle
- Health Impact Assessment, Western Cape Government: Health
- Division of Health Systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University
| | - Virginia Zweigenthal
- Health Impact Assessment, Western Cape Government: Health
- School of Public Health and Family Medicine, University of Cape Town
| | - Hassan Mahomed
- Division of Health Systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University
- Metro Health Services, Western Cape Government: Health
| | - Masudah Paleker
- Division of Health Systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University
- Metro Health Services, Western Cape Government: Health
| | - David Pienaar
- Rural Health Services, Western Cape Government: Health
| | - Yamanya Tembo
- School of Public Health and Family Medicine, University of Cape Town
- Rural Health Services, Western Cape Government: Health
| | - Charlene Lawrence
- Communicable Disease Sub-Directorate, Western Cape Government: Health
| | - Washiefa Isaacs
- Communicable Disease Sub-Directorate, Western Cape Government: Health
| | - Hlengani Mathema
- Communicable Disease Sub-Directorate, Western Cape Government: Health
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
| | - Derick Allen
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Taryn Allie
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Jamy-Lee Bam
- Health Impact Assessment, Western Cape Government: Health
| | - Kasturi Buddiga
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Pierre Dane
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Alexa Heekes
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Boitumelo Matlapeng
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Themba Mutemaringa
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Luckmore Muzarabani
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Florence Phelanyane
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Rory Pienaar
- Health Impact Assessment, Western Cape Government: Health
| | - Catherine Rode
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Mariette Smith
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Nicki Tiffin
- Health Impact Assessment, Western Cape Government: Health
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
- Wellcome Centre for Infectious Disease Research in Africa, University of Cape Town
- Division of Computational Biology, University of Cape Town
| | - Nesbert Zinyakatira
- Health Impact Assessment, Western Cape Government: Health
- School of Public Health and Family Medicine, University of Cape Town
| | - Carol Cragg
- Health Programmes Directorate, Western Cape Government: Health
| | - Frederick Marais
- Health Programmes Directorate, Western Cape Government: Health
- Faculty of Health Sciences, North West University
| | - Vanessa Mudaly
- School of Public Health and Family Medicine, University of Cape Town
- Health Programmes Directorate, Western Cape Government: Health
| | | | - Jody Davids
- George Hospital, Western Cape Government: Health
| | | | | | | | - Kevin Adams
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Gordon Audley
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Kathleen Bateman
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Peter Beckwith
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Marc Bernon
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Dirk Blom
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Linda Boloko
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Jean Botha
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Adam Boutall
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Sean Burmeister
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Lydia Cairncross
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Gregory Calligaro
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Cecilia Coccia
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Chadwin Corin
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Remy Daroowala
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Joel A Dave
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Elsa De Bruyn
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Martin De Villiers
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Mimi Deetlefs
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Sipho Dlamini
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Thomas Du Toit
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Wilhelm Endres
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Tarin Europa
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Graham Fieggan
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Anthony Figaji
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Petro Frankenfeld
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Elizabeth Gatley
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Phindile Gina
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Evashan Govender
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Rochelle Grobler
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Manqoba Vusumuzi Gule
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Christoff Hanekom
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Michael Held
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Alana Heynes
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Sabelo Hlatswayo
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Bridget Hodkinson
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | | | - Shakeel Hoosain
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Ashely Jacobs
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Miriam Kahn
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Thania Kahn
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Arvin Khamajeet
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Joubin Khan
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Riaasat Khan
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Alicia Khwitshana
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Lauren Knight
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Sharita Kooverjee
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Rene Krogscheepers
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Jean Jacque Kruger
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Suzanne Kuhn
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Kim Laubscher
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - John Lazarus
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Jacque Le Roux
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Scott Lee Jones
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Dion Levin
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Gary Maartens
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Thina Majola
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Rodgers Manganyi
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - David Marais
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Suzaan Marais
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Francois Maritz
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Deborah Maughan
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Simthandile Mazondwa
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Luyanda Mbanga
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Nomonde Mbatani
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Bulewa Mbena
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Graeme Meintjes
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Marc Mendelson
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Ernst Möller
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Allison Moore
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Babalwa Ndebele
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Marc Nortje
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Ntobeko Ntusi
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Funeka Nyengane
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Chima Ofoegbu
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Nectarios Papavarnavas
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Jonny Peter
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Henri Pickard
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Kent Pluke
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Peter J Raubenheimer
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Gordon Robertson
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Julius Rozmiarek
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - A Sayed
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Matthias Scriba
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Hennie Sekhukhune
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Prasun Singh
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Elsabe Smith
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Vuyolwethu Soldati
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Cari Stek
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Robert van den berg
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Le Roux van der Merwe
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Pieter Venter
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Surgery, University of Cape Town
| | - Barbra Vermooten
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Gerrit Viljoen
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Santhuri Viranna
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Jonno Vogel
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Nokubonga Vundla
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Sean Wasserman
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | - Eddy Zitha
- Groote Schuur Hospital, Western Cape Government: Health
- Department of Medicine, University of Cape Town
| | | | | | - Katrin Stuve
- Department of Radiology, University of Cape Town
| | | | | | - Sue Le Roux
- Karl Bremer Hospital, Western Cape Government: Health
| | | | | | - Mark Wates
- Karl Bremer Hospital, Western Cape Government: Health
| | | | - Nabilah Ebrahim
- Khayelitsha District Hospital, Western Cape Government: Health
| | - Sa’ad Lahri
- Khayelitsha District Hospital, Western Cape Government: Health
| | - Ayanda Mnguni
- Khayelitsha District Hospital, Western Cape Government: Health
| | - Thomas Crede
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
| | - Martin de Man
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
- Division of Emergency Medicine, University of Cape Town
| | - Katya Evans
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
- Division of Emergency Medicine, University of Cape Town
| | - Clint Hendrikse
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
- Division of Emergency Medicine, University of Cape Town
| | - Jonathan Naude
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
| | - Moosa Parak
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
- Division of Emergency Medicine, University of Cape Town
| | - Patrick Szymanski
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
| | - Candice Van Koningsbruggen
- Mitchells Plain and Heideveld Hospitals, Western Cape Government: Health
- Division of Emergency Medicine, University of Cape Town
| | - Riezaah Abrahams
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Brian Allwood
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Christoffel Botha
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Matthys Henndrik Botha
- Tygerberg Hospital, Western Cape Government: Health
- Department of Obstetrics and Gyneacology, Stellenbosch University
| | - Alistair Broadhurst
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Dirkie Claasen
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Che Daniel
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Riyaadh Dawood
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Marie du Preez
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Nicolene Du Toit
- Tygerberg Hospital, Western Cape Government: Health
- Department of Obstetrics and Gyneacology, Stellenbosch University
| | - Kobie Erasmus
- Tygerberg Hospital, Western Cape Government: Health
- Emergency Medical Services, Western Cape Government
| | | | - Shiraaz Gabriel
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Susan Hugo
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Thabiet Jardine
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Clint Johannes
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Sumanth Karamchand
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Usha Lalla
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Eduard Langenegger
- Tygerberg Hospital, Western Cape Government: Health
- Department of Obstetrics and Gyneacology, Stellenbosch University
| | - Eize Louw
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Boitumelo Mashigo
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Nonte Mhlana
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Chizama Mnqwazi
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Ashley Moodley
- Tygerberg Hospital, Western Cape Government: Health
- Department of Obstetrics and Gyneacology, Stellenbosch University
| | - Desiree Moodley
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Saadiq Moolla
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Abdurasiet Mowlana
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Andre Nortje
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Elzanne Olivier
- Tygerberg Hospital, Western Cape Government: Health
- Department of Obstetrics and Gyneacology, Stellenbosch University
| | - Arifa Parker
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Chané Paulsen
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Hans Prozesky
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Jacques Rood
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Tholakele Sabela
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Neshaad Schrueder
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Nokwanda Sithole
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Sthembiso Sithole
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Jantjie J Taljaard
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Gideon Titus
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Tian Van Der Merwe
- Tygerberg Hospital, Western Cape Government: Health
- Department of Obstetrics and Gyneacology, Stellenbosch University
| | - Marije van Schalkwyk
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Luthando Vazi
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Abraham J Viljoen
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | - Mogamat Yazied Chothia
- Tygerberg Hospital, Western Cape Government: Health
- Department of Medicine, Stellenbosch University
| | | | - Lee Alan Wallis
- Emergency Medical Services, Western Cape Government
- Division of Emergency Medicine, University of Cape Town
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Linda Aldum
- City Health, Community Services and Health, City of Cape Town
| | | | - Raakhee Girran
- City Health, Community Services and Health, City of Cape Town
| | - Kevin Lee
- City Health, Community Services and Health, City of Cape Town
| | - Lenny Naidoo
- City Health, Community Services and Health, City of Cape Town
| | | | - Kim Anderson
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Kerrin Begg
- School of Public Health and Family Medicine, University of Cape Town
| | - Lisa Boerlage
- School of Public Health and Family Medicine, University of Cape Town
| | - Morna Cornell
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Renée de Waal
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Lilian Dudley
- Metro Health Services, Western Cape Government: Health
| | - René English
- Metro Health Services, Western Cape Government: Health
| | - Jonathan Euvrard
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Pam Groenewald
- South African Medical Research Council Burden of Disease Research Unit
| | - Nisha Jacob
- School of Public Health and Family Medicine, University of Cape Town
| | - Heather Jaspan
- Division of Immunology and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town
| | - Emma Kalk
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | | | - Thoko Malaba
- School of Public Health and Family Medicine, University of Cape Town
| | - Patience Nyakato
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Gabriela Patten
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | | | | | - Priscilla Tsondai
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - James Van Duuren
- School of Public Health and Family Medicine, University of Cape Town
| | | | - Lucille Blumberg
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
- University of Pretoria
| | - Cheryl Cohen
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
- School of Public Health, University of Witwatersrand
| | - Nelesh Govender
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
- School of Pathology, University of the Witwatersrand and School of Pathology, University of Cape Town
| | - Waasila Jassat
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
| | - Tendesayi Kufa
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
| | - Kerrigan McCarthy
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
| | - Lynn Morris
- National Institute for Communicable Diseases, National Health Laboratory Service, South Africa
- University of Witwatersrand, South African Medical Research Council Antibody Immunity Research Unit and the Centre for the AIDS Programme in South Africa (CAPRISA)
| | - Nei-yuan Hsiao
- National Health Laboratory Service and Division of Virology, School of Pathology, University of Cape Town
| | - Ruan Marais
- National Health Laboratory Service and Division of Virology, School of Pathology, University of Cape Town
| | - Jon Ambler
- Wellcome Centre for Infectious Disease Research in Africa, University of Cape Town
| | - Olina Ngwenya
- Wellcome Centre for Infectious Disease Research in Africa, University of Cape Town
| | | | - Leigh Johnson
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Reshma Kassanjee
- Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town
| | - Tsaone Tamuhla
- Division of Computational Biology, University of Cape Town
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18
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Sayed A, Othman IM, Hamam M, Gomaa H, Gadallah MI, Mostfa M, Ali HRH, Emran MY, Abdel-Hakim M, Mahross M. A novel fluorescent sensor for fast and highly selective turn-off detection of Fe3+ in water and pharmaceutical samples using synthesized azopyrazole-benzenesulfonamide derivative. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129175] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Elsaman AM, Sayed A, Radwan AR. Hand dominance in early and established rheumatoid arthritis: evaluation by dynamometer, Ritchie index and musculoskeletal ultrasound: a cross sectional study. Reumatismo 2020; 72:131-144. [PMID: 33213126 DOI: 10.4081/reumatismo.2020.1273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 08/31/2020] [Indexed: 11/23/2022] Open
Abstract
Rheumatoid arthritis (RA) usually occurs as a symmetrical disease, which mainly affects the small joints of the hands and feet. The correlation of handedness with radiological changes shows significantly greater radiological changes in the dominant hand than in the non-dominant one. Additionally, the dominant hand is more severely affected in terms of strength, function and deformity. Our objective is to evaluate the influence of handedness on musculoskeletal ultrasound (US), Ritchie articular index (RAI) and digital dynamometer findings in patients with active RA (early, group B, vs. established, group A). A total number of 113 patients with established RA and 44 patients with early RA with active disease (DAS28-ESR >3.2) were included in the study. US assessments of both hands were performed to assess synovitis, tenosynovitis, and erosions. RAI was used to evaluate three joint groups in each hand. Handgrip strength was measured with a digital dynamometer. The US5 score showed that the dominant hand was more affected than the non-dominant one. This was significant in group A for the synovitis Power Doppler (PD) mode (p=0.032) and tenosynovitis PD (p=0.005) scores, and in group B for synovitis Grey Scale (GS) mode (p<0.001), synovitis PD (p=0.037) and erosions (p=0.027) scores. RAI was significantly higher in the dominant hand (p=0.013) in group A and even greater in group B (p=0.011). The dominant hand was stronger than the non-dominant hand in both groups. The dominant hand is generally affected in early RA. Subsequently, the disease tends to become more symmetrical with disease progression.
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Affiliation(s)
- A M Elsaman
- Associate Professors of Rheumatology, Department of Rheumatology and Rehabilitation, Sohag University Hospital, Sohag University, Sohag.
| | - A Sayed
- Consultant of Pain Management, Armed Forces Specialized Center of Rehabilitation, Altaif.
| | - A R Radwan
- Associate Professors of Rheumatology, Department of Rheumatology and Rehabilitation, Sohag University Hospital, Sohag University, Sohag.
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20
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King O, Cruz-Moreira D, Kit-Anan W, Sayed A, Wang B, Fourre J, Randi A, Rasponi M, Terracciano C. Influence of perfusable microvasculature on excitation-contraction coupling in IPSC-derived myocardium. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3590] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
The myocardium is one of the most densely vascularised tissues in the body, with dynamic metabolic demand from beating cardiomyocytes (CM) necessitating an intimate relationship with microvasculature. Endothelial cells (EC) produce a diverse array of cardio-active factors which acutely and chronically modulate myocardial phenotype. Disruption of CM-EC signalling results in pathological remodelling, and ultimately organ failure. However, as physiologically relevant recapitulation of CM-EC interaction has been difficult to achieve in vitro, many molecular mechanisms governing their interaction remain poorly understood.
To induce cardiac vasculogenesis in vitro, we have developed microfluidic chips which subject 3D hydrogel cultures to precisely controlled flow. We then co-cultured human cardiac microvascular ECs, human left ventricular fibroblasts (FB), and human induced pluripotent stem cell-derived cardiomyocytes for 5 days under a pro-vasculogenic protocol (0.5 ul/min flow rate, 50ng/ml VEGF, 100ng/ml Ang-1). Via live and fixed immunofluorescence microscopy, we observed spontaneous formation of a microvasculature network with a continuously open lumen embedded within beating myocardium. Simultaneous quantification of iPSC-CM contractility and perfused red blood cell velocity reveals biomimetic pulsatile flow profile within the microvasculature. To evaluate the influence of microvasculature on CM function, we incorporated CMs differentiated from stem cells with the genetically encoded calcium biosensor GCaMP6F. Compared to CM only control, vascularised preparations demonstrate significantly faster calcium transient time to peak (−11.5%, p=0.007) and time to 50% relaxation (−15%, p=0.01). Under static conditions and 1Hz electrical stimulation, presence of EC was associated with reduced iPSC-CM arrhythmia at baseline (p<0.0001) and during 1uM isoprenaline treatment (p=0.0003), while maintaining isoprenaline induced Ca2+ handling quickening.
To the best of our knowledge, this work represents the first fully perfusable model of the myocardial microvasculature, and highlights the importance of EC regulatory influence on CM function. Further work aims to investigate underlying molecular mechanisms to provide therapeutically relevant insight into cardiac biology.
Funding Acknowledgement
Type of funding source: Foundation. Main funding source(s): British Heart Foundation
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Affiliation(s)
- O King
- National Heart and Lung Institute, London, United Kingdom
| | - D Cruz-Moreira
- Politecnico di Milano, Department of Electronics, Information, and Bioengineering, Milan, Italy
| | - W Kit-Anan
- National Heart and Lung Institute, London, United Kingdom
| | - A Sayed
- National Heart and Lung Institute, London, United Kingdom
| | - B.X Wang
- National Heart and Lung Institute, London, United Kingdom
| | - J Fourre
- National Heart and Lung Institute, London, United Kingdom
| | - A.M Randi
- National Heart and Lung Institute, London, United Kingdom
| | - M Rasponi
- Politecnico di Milano, Department of Electronics, Information, and Bioengineering, Milan, Italy
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21
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Rahman MM, Kabir SJ, Islam NA, Saha MK, Islam MS, Islam MA, Rahman MM, Hossain MZ, Rahman AM, Sayed A, Islam MN, Kabir KM, Hossain A. Outcome of Closed Reduction and Internal Fixation by Titanium Elastic Nailing for Fracture Shaft of Femur in Children. Mymensingh Med J 2020; 29:823-828. [PMID: 33116083] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Femoral fractures are frequent in the pediatric population. Treatment options are based on the patient's age, fracture pattern, type of trauma and associated soft tissue injury. The traditional treatment method for pediatric femoral shaft fracture has been traction and spica casting. The immediate spica cast is safe and effective for children up to 6 years of age with isolated femoral fracture and acceptable reduction. Patients between 6 and 10 years of age can also be treated with spica casting with or without traction. This prospective study was done in the department of Orthopaedics, Mymensingh Medical College Hospital, Mymensingh, Bangladesh form from July 2015 to June 2019 to evaluate the outcome of closed reduction and internal fixation by titanium elastic nailing for fracture shaft of femur. Twenty patients, all presenting with fresh diaphyseal fractures of femur, treated with closed reduction and internal fixation by titanium elastic nailing. These patients were prospectively evaluated over a period of at least 18 months. Fractures were classified according to Association of Orthopaedics (AO) classification of shaft of femur fractures. According to AO classification, all were A1, A2, A3 fractures. Average age of the patients was 11±2.7 years; range was 6 to 16 years. There were 15 males and 5 females. Out of 20 cases treated with this method, stable fixation and union was achieved in all of them. Radiological union was achieved at an average of 10±2.3 weeks (8-15 weeks). The results were excellent in twelve patients (60%), successful in five (25%) and poor in three patients (15%) as per the scoring criteria for TEN. The effective treatment of diaphyseal fractures of the femur is intramedullary fixation by titanium elastic nailing in patients of the 6-16 years age group.
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Affiliation(s)
- M M Rahman
- Dr Md Matiur Rahman, Assistant Professor, Department of Orthopaedics, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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22
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Kabir SJ, Rahman MM, Islam NA, Saha MK, Islam MS, Islam MA, Rahman MM, Hossain MZ, Sayed A, Islam MN, Kabir KM, Hossain A. Anterior Cruciate Ligament Reconstruction using Bone Patellar Tendon Bone Autograft in ACL Deficient Knee. Mymensingh Med J 2020; 29:815-822. [PMID: 33116082] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
More than 120,000 anterior cruciate ligament (ACL) injuries occur every year in the United States, mostly during the high school and college years. The incidence of these injuries is slowly increasing, especially in females. This is likely caused by their increasing participation in high school and other organized sports. In addition, several studies have shown that female athletes are at an increased risk of ACL injury in sex comparable sports. The goal of this study was to evaluate the functional outcome of Arthroscopic anterior cruciate ligament reconstruction using Bone-Patellar tendon- Bone autograft. 25 patients with chronic ACL deficient knee presenting to Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh from January 2018 to December 2019 were included in the study. The patients with severe osteoarthritis (OA) knee, local active infection and systemic disease, intraarticular fracture of knee that might influence the study results were excluded from the study. Bone patellar tendon bone graft was harvested from ipsilateral knee. The patient was followed till 6 months with specified program of rehabilitation. Results were evaluated by an independent examiner using radiography, subjective and objective evaluation. Assessment using Lysholm's score was 50 (42-63) preoperatively and 90.8 (63-97) at the latest follow up (p<0.005). No patient complained of instability at latest follow up. The quadriceps muscle showed atrophy at final follow-up. Five Patients complained of anterior knee pain. We found no graft displacement on follow up radiographs. Osteo-integration occurred in all cases. ACLR with a BPTB graft can stabilize the knee without loss of motion by closely mimicking the native ACL without any hazards and additional complications. It is useful in high demand patients and cost effective option with high patient satisfaction rate for reconstruction of ACL.
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Affiliation(s)
- S J Kabir
- Dr Shah Jawaher Jahan Kabir, Associate Professor & Head, Department of Orthopaedics, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Kholif A, Sayed A, Abd Al Aziz M, Gouda G, Alzahar H. EFFECT OF FEEDING BUFFALOES ON DIETS CONTAINING VEGETABLE OILS RICH IN UNSATURATED FATTY ACIDS ON ITS PRODUCTIVE PERFORMANCE AND MILK QUALITY. Egyptian Journal of Nutrition and Feeds 2020; 23:197-204. [DOI: 10.21608/ejnf.2020.115084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Fatema N, Acharya Y, Dahal R, Sayed A, Al Yaqoubi HN. Complete Right Ovarian Vein Thrombosis Extending to the Inferior Vena Cava during Early Postpartum Period in a Low Risk Patient. Kathmandu Univ Med J (KUMJ) 2019; 17:251-253. [PMID: 33305758] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Postpartum ovarian vein thrombosis is rare but life-threatening complication of puerperium. It predominantly occurs in the right side of the abdomen, mimicking various other conditions like acute appendicitis, ureteral stones or tubo-ovarian abscess. It is imperative to envisage the possibility of this rare disease even in an uncomplicated pregnancy. Here, we reported a 28-year-old female with no significant underlying risk factors who presented with high-grade fever and right lower abdominal pain after four days of an uncomplicated cesarean delivery. A right-sided complete ovarian vein thrombosis extending to the inferior vena cava was diagnosed and subsequently managed with long-term anticoagulant therapy. She had an uneventful recovery, with repeat imaging after three months showing complete resolution of thrombus.
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Affiliation(s)
- N Fatema
- Department of Obstetrics and Gynaecology, Ibri Regional Hospital, Sultanate of Oman
| | - Y Acharya
- Department of Epidemiology, Preventive and Evidence-based Medicine, Avalon University School of Medicine, Curacao, Netherlands Antilles
| | - R Dahal
- Departmental of Internal Medicine, Saint Peter's University Hospital, New Jersey, USA
| | - A Sayed
- Department of Epidemiology, Preventive and Evidence-based Medicine, Avalon University School of Medicine, Curacao, Netherlands Antilles
| | - H N Al Yaqoubi
- Department of Obstetrics and Gynaecology, Ibri Regional Hospital, Sultanate of Oman
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Sayed A, Bottu A, Qaisar M, Mane MP, Acharya Y. Nipah virus: a narrative review of viral characteristics and epidemiological determinants. Public Health 2019; 173:97-104. [PMID: 31261032 DOI: 10.1016/j.puhe.2019.05.019] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 02/02/2019] [Accepted: 05/15/2019] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The objectives of this article are to highlight the properties of the Nipah virus (NiV) and discuss its epidemiological determinants. STUDY DESIGN A review of conjectures, epidemiological and clinically related studies, and identification and discussion of preventive approaches is conducted. METHODS A review of the current literature is performed going through online search engines: PubMed and Google Scholar. The search strategy was focused on two main components, first on the NiV ('Nipah' OR 'Nipah Virus') and subsequently on its epidemiology, including determinants and preventive measures ('Epidemiology/determinants' OR 'Epidemiology/prevention'). RESULTS NiV infection is an emerging zoonotic infectious disease causing sporadic outbursts in many developing countries within Asia, Africa, and South America. Pteroid bats are the natural reservoirs, but human-to-human transmission is possible. Clinical course ranges from non-specific influenza-like symptoms to rapidly progressive respiratory and neurologic complications. Vector control has been challenging because of its widely distributed ecological niche. Currently, no definitive treatment protocols are available in humans, but profound breakthrough in vaccine technology and successful equine vaccines has shown the way for the development of NiV vaccine and immunization in the near future. CONCLUSIONS The NiV poses a significant public health risk because of its intricate transmission cycle, unpredictable viral course, murky management protocol, and unavailability of vaccine. Complicated by emergence and subsequent reemergence, prevention and containment are the two most important public health promotion strategies. Early anticipation, intergovernmental preparedness and cooperation, and surveillance of zoonotic infections still remain the key to mitigate the risk.
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Affiliation(s)
- A Sayed
- Avalon University School of Medicine (AUSOM), Willemstad, Curacao, Netherlands Antilles
| | - A Bottu
- Avalon University School of Medicine (AUSOM), Willemstad, Curacao, Netherlands Antilles
| | - M Qaisar
- Avalon University School of Medicine (AUSOM), Willemstad, Curacao, Netherlands Antilles
| | - M P Mane
- Avalon University School of Medicine (AUSOM), Willemstad, Curacao, Netherlands Antilles
| | - Y Acharya
- Avalon University School of Medicine (AUSOM), Willemstad, Curacao, Netherlands Antilles.
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Chung CJ, Clavijo A, Bounpheng MA, Uddowla S, Sayed A, Dancho B, Olesen IC, Pacheco J, Kamicker BJ, Brake DA, Bandaranayaka-Mudiyanselage CL, Lee SS, Rai DK, Rieder E. An improved, rapid competitive ELISA using a novel conserved 3B epitope for the detection of serum antibodies to foot-and-mouth disease virus. J Vet Diagn Invest 2018; 30:699-707. [PMID: 29916768 PMCID: PMC6505784 DOI: 10.1177/1040638718779641] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 11/16/2022] Open
Abstract
The highly contagious foot-and-mouth disease virus (FMDV) afflicts cloven-hoofed animals, resulting in significant costs because of loss of trade and recovery from disease. We developed a sensitive, specific, and rapid competitive ELISA (cELISA) to detect serum antibodies to FMDV. The cELISA utilized a monoclonal blocking antibody specific for a highly conserved FMDV nonstructural 3B epitope, a recombinant mutant FMDV 3ABC coating protein, and optimized format variables including serum incubation for 90 min at 20-25°C. Samples from 16 animals experimentally infected with one FMDV serotype (A, O, Asia, or SAT-1) demonstrated early detection capacity beginning 7 d post-inoculation. All samples from 55 vesicular stomatitis virus antibody-positive cattle and 44 samples from cloven-hoofed animals affected by non-FMD vesicular diseases were negative in the cELISA, demonstrating 100% analytical specificity. The diagnostic sensitivity was 100% against sera from 128 cattle infected with isolates of all FMDV serotypes, emphasizing serotype-agnostic results. Diagnostic specificities of U.S. cattle ( n = 1135) and swine ( n = 207) sera were 99.4% and 100%, respectively. High repeatability and reproducibility were demonstrated with 3.1% coefficient of variation in percent inhibition data and 100% agreement using 2 kit lots and 400 negative control serum samples, with no difference between bench and biosafety cabinet operation. Negative results from vaccinated, uninfected cattle, pig, and sheep sera confirmed the DIVA (differentiate infected from vaccinated animals) capability. This rapid (<3 h), select agent-free assay with high sensitivity and specificity, DIVA capability, and room temperature processing capability will serve as a useful tool in FMDV surveillance, emergency preparedness, response, and outbreak recovery programs.
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Affiliation(s)
- Chungwon J Chung
- U.S. Department of Homeland Security Science & Technology Directorate (Chung) Plum Island Animal Disease Center, Greenport, NY
| | - Alfonso Clavijo
- Institute for Infectious Animal Diseases, College Station, TX (Clavijo)
| | - Mangkey A Bounpheng
- Texas A&M Veterinary Medical Diagnostic Laboratory, College Station, TX (Bounpheng)
| | - Sabena Uddowla
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, TN (Uddowla, Pacheco, Rai)
| | - Abu Sayed
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory (Sayed, Dancho, Olesen) Plum Island Animal Disease Center, Greenport, NY
| | - Brooke Dancho
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory (Sayed, Dancho, Olesen) Plum Island Animal Disease Center, Greenport, NY
| | - Ian C Olesen
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory (Sayed, Dancho, Olesen) Plum Island Animal Disease Center, Greenport, NY
| | - Juan Pacheco
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, TN (Uddowla, Pacheco, Rai)
| | | | - David A Brake
- BioQuest Associates LLC (Brake) Plum Island Animal Disease Center, Greenport, NY
| | | | - Stephen S Lee
- Department of Statistics, University of Idaho, Moscow, ID (Lee)
| | - Devendra K Rai
- Oak Ridge Institute for Science and Education, Plum Island Animal Disease Center Research Participation Program, Oak Ridge, TN (Uddowla, Pacheco, Rai)
| | - Elizabeth Rieder
- U.S. Department of Agriculture, Agricultural Research Service, Foreign Animal Disease Research Unit (Rieder) Plum Island Animal Disease Center, Greenport, NY
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Aref M, Sayed A, Zahran A, Abdelaal G, Nasser E. Flow cytometric analysis of somatic cells and oxidant/antioxidant profile in dairy cows with subclinical mastitis. BJVM 2018. [DOI: 10.15547/bjvm.1089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ullah QAE, Hussain MA, Sayed A, Quader MA. A Case Report: Symptomatic Sacral Tarlov Cyst in a Male of 24 Years. Delta Med Col J 2017. [DOI: 10.3329/dmcj.v5i2.33349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Perineural (Tarlov) cyst, a rare but benign condition, is meningeal dilatations of the posterior spinal nerve root sheath that most often affects sacral roots and can cause a progressive painful radiculopathy. Tarlov cysts are most commonly diagnosed by lumbosacral magnetic resonance imaging (MRI) and can often be demonstrated by computerized tomography (CT) to communicate with the spinal subarachnoid space. The cyst can enlarge via a net inflow of cerebrospinal fluid, eventually causing symptoms by distorting, compressing, or stretching adjacent nerve roots. It is generally agreed that asymptomatic Tarlov cysts do not require treatment. When symptomatic, the potential surgery-related benefit and the specific surgical intervention remain controversial. A 24 years old male presented with a history of trauma and pain in his low back with dull headache for six months. Physical and radiographic examination was consistent with tarlov cyst. Microsurgical excision with plication of the cyst wall was performed. Histo-pathological examination confirmed the diagnosis of Tarlov cyst. Excellent clinical and functional results were obtained with no recurrence after 6 months of follow-up. Tarlov cyst in a male of age 24 is a rare entity and decision making for management poses difficulties. Our experience with microsurgical excision with plication of the cyst wall was quite satisfactory with excellent clinical result, and we recommend this as one of the satisfactory modalities of treatment of Tarlov cyst in adult.Delta Med Col J. Jul 2017 5(2): 99-103
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Sayed A, Mashaal M, Soliman SA, Elwan H. Aortic bypass surgery using synthetic conduits in a child with mycotic aneurysmal disease. Ann R Coll Surg Engl 2016; 98:e59-61. [PMID: 26985817 DOI: 10.1308/rcsann.2016.0100] [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: 11/22/2022] Open
Abstract
A six-year-old child developed multiple aortic aneurysms as a consequence of fungal infection following thoracic aortic surgery for coarctation. Several repairs of both the thoracic and abdominal aorta were carried out using synthetic material combined with long-term postoperative antifungal treatment. We describe the surgical interventions performed and follow-up. The choice of conduit continues to be the main concern; however, when other alternatives are not available, synthetic material combined with indefinite antifungal treatment can produce satisfactory medium-term results.
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Affiliation(s)
- A Sayed
- Kasr Al Ainy Hospital , Cairo , Egypt
| | - M Mashaal
- Kasr Al Ainy Hospital , Cairo , Egypt
| | | | - H Elwan
- Kasr Al Ainy Hospital , Cairo , Egypt
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Abstract
Spontaneous gastric perforation is a rare entity in neonates. We report a case of spontaneous gastric perforation in a neonate operated for in-utero rupture of omphalocele.
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Bracht AJ, O’Hearn ES, Fabian AW, Barrette RW, Sayed A. Real-Time Reverse Transcription PCR Assay for Detection of Senecavirus A in Swine Vesicular Diagnostic Specimens. PLoS One 2016; 11:e0146211. [PMID: 26757142 PMCID: PMC4710529 DOI: 10.1371/journal.pone.0146211] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 12/15/2015] [Indexed: 12/02/2022] Open
Abstract
Senecavirus A (SV-A), formerly, Seneca Valley virus (SVV), has been detected in swine with vesicular lesions and is thought to be associated with swine idiopathic vesicular disease (SIVD), a vesicular disease syndrome that lacks a defined causative agent. The clinical presentation of SIVD resembles that of other more contagious and economically devastating vesicular diseases, such as foot-and-mouth disease (FMD), swine vesicular disease (SVD), and vesicular stomatitis (VS), that typically require immediate rule out diagnostics to lift restrictions on animal quarantine, movement, and trade. This study presents the development of a sensitive, SYBR Green RT-qPCR assay suitable for detection of SV-A in diagnostic swine specimens. After testing 50 pigs with clinical signs consistent with vesicular disease, 44 (88%) were found to be positive for SV-A by RT-qPCR as compared to none from a negative cohort of 35 animals without vesicular disease, indicating that the assay is able to successfully detect the virus in an endemic population. SV-A RNA was also detectable at a low level in sera from a subset of pigs that presented with (18%) or without (6%) vesicular signs. In 2015, there has been an increase in the occurrence of SV-A in the US, and over 200 specimens submitted to our laboratory for vesicular investigation have tested positive for the virus using this method. SV-A RNA was detectable in all common types of vesicular specimens including swabs and tissue from hoof lesions, oral and snout epithelium, oral swabs, scabs, and internal organ tissues such as liver and lymph node. Genome sequencing analysis from recent virus isolates was performed to confirm target amplicon specificity and was aligned to previous isolates.
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Affiliation(s)
- Alexa J. Bracht
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory, Plum Island Animal Disease Center, Orient, NY, United States of America
- * E-mail:
| | - Emily S. O’Hearn
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory, Plum Island Animal Disease Center, Orient, NY, United States of America
| | - Andrew W. Fabian
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory, Plum Island Animal Disease Center, Orient, NY, United States of America
| | - Roger W. Barrette
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Foreign Animal Disease Diagnostic Laboratory, Plum Island Animal Disease Center, Orient, NY, United States of America
| | - Abu Sayed
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Agriculture Select Agent Services, National Import Export Services, Riverdale, MD, United States of America
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Eid MA, Sayed A, Abdel-Rehim R, Mostafa T. Impact of the mode of delivery on female sexual function after childbirth. Int J Impot Res 2015; 27:118-20. [PMID: 25672800 DOI: 10.1038/ijir.2015.2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 10/20/2014] [Accepted: 01/07/2015] [Indexed: 02/08/2023]
Abstract
This cohort study aimed to assess the effect of the mode of delivery on female sexual function (FSF) after childbirth. Out of 256 primiparous women, 200 subjects that completed the study were divided into two groups; women that delivered vaginally and women that had elective cesarean section (CS). They were subjected to a translated version of female sexual function index (FSFI) questionnaire evaluating desire, lubrication, orgasm, satisfaction, pain both antenatally and 12 weeks postpartum. The mean FSFI total score of the two investigated groups demonstrated nonsignificant difference 12 weeks after delivery compared with these scores antenatally. Women that delivered vaginally demonstrated significant decreases in the scores of desire, arousal and lubrication domains 12 weeks after delivery compared with these scores antenatally where other scores demonstrated nonsignificant differences. Women that delivered by CS demonstrated a significant difference in desire domain 12 weeks after delivery compared with these scores antenatally where other scores demonstrated nonsignificant differences. It is concluded that the mode of delivery has nonsignificant effect on the FSF 12 weeks after childbirth. Specifically, vaginal delivery is associated with significant decrease in the desire, arousal and lubrication domains where elective CS is associated with significant decrease in the desire domain.
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Affiliation(s)
- M A Eid
- Department of Andrology & Sexology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - A Sayed
- Department of Gynecology & Obstetrics, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - R Abdel-Rehim
- Department of Dermatology & Reproduction, National Research Center, Giza, Egypt
| | - T Mostafa
- Department of Andrology & Sexology, Faculty of Medicine, Cairo University, Cairo, Egypt
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Sayed A, Šerý O, Plesnik J, Daoudi H, Rouabah A, Rouabah L, Khan NA. CD36 AA genotype is associated with decreased lipid taste perception in young obese, but not lean, children. Int J Obes (Lond) 2015; 39:920-4. [PMID: 25687220 DOI: 10.1038/ijo.2015.20] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [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] [Received: 07/07/2014] [Revised: 10/23/2014] [Accepted: 11/02/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND/OBJECTIVE Obesity is an alarming threat for all age groups, including children. Fat overconsumption is one of the factors that directly influences this pathology. Recent studies have suggested that a common variant in the CD36 gene, that is, single-nucleotide polymorphism (SNP) rs1761667-A allele, that reduces CD36 expression, associates with high oral fat detection thresholds in some obese subjects. The objective was to assess fatty acid sensitivity in relation to CD36 SNP in young lean and obese children. SUBJECTS/METHODS We studied lingual detection thresholds for emulsions, containing oleic acid, in Algerian children (n=116, age=8±0.5 years) who were divided into two groups: obese (n=57; body mass index (BMI) z-score=2.513±0.490) and lean children (n=59; BMI z-score=-0.138±0.601) by alternative-forced choice method. To correlate the lipid taste perception thresholds with CD36 SNP, the children were genotyped for A/G SNP rs1761667 in 5'UTR region of CD36 by using PCR and restriction fragment length polymorphism. RESULTS We noticed significantly higher CD36 A-allele frequency (P=0.036) in young obese children compared with leans. CD36 A-allele was associated with higher lipid taste perception thresholds than G-allele in obese children, but not in lean controls. Moreover, waist circumference was positively correlated with reduced fat taste sensitivity in these children. CONCLUSIONS CD36 SNP A-allele, being present both in young lean and in obese children, is associated with high threshold for fatty acid taste sensitivity only in obese children.
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Affiliation(s)
- A Sayed
- Laborartoire de Biologie Cellulaire and Moléculaire, Université de Constantine 1, Constantine, Algérie
| | - O Šerý
- 1] Institute of Animal Physiology and Genetics, Academy of Science, Brno, Czech Republic [2] Laboratory of Neurobiology and Molecular Psychiatry, Laboratory of Molecular Physiology, Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - J Plesnik
- 1] Laboratory of Neurobiology and Molecular Psychiatry, Laboratory of Molecular Physiology, Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic [2] Physiologie de la Nutrition and Toxicologie, UMR U866 INSERM/Université de Bourgogne/Agro-Sup, Dijon, France
| | - H Daoudi
- Laborartoire de Biologie Cellulaire and Moléculaire, Université de Constantine 1, Constantine, Algérie
| | - A Rouabah
- Laborartoire de Biologie Cellulaire and Moléculaire, Université de Constantine 1, Constantine, Algérie
| | - L Rouabah
- Laborartoire de Biologie Cellulaire and Moléculaire, Université de Constantine 1, Constantine, Algérie
| | - N A Khan
- Physiologie de la Nutrition and Toxicologie, UMR U866 INSERM/Université de Bourgogne/Agro-Sup, Dijon, France
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Abstract
BACKGROUND Despite recent treatment modalities, mortality from persistent pulmonary hypertension (PPHN) remains significant. In instances where infants do not respond to inhaled nitric oxide (iNO), oral sildenafil could hold promise as a selective pulmonary vasodilator. Further studies are still needed to explore its efficacy and safety in newborns with PPHN. OBJECTIVES To validate the efficacy of oral sildenafil on oxygenation and its short-term safety in newborns with persistent pulmonary hypertension. METHODS A total of 27 newborns ≥36 weeks gestational age were admitted to NICU with oxygenation index (OI) ≥15 and confirmed diagnosis of PPHN with echocardiography. Oral sildenafil given at a dose of 1-2 mg/kg every 6 hours. We monitored improvement in oxygenation, safety and short-term outcomes. RESULTS Among 27 newborns, oral sildenafil was efficacious in 21 patients (78%) with reduction of OI from 34.9 ± 9.6 to 13 ± 3.2 (p < 0.001), increase of PaO2 from 42.4 ± 13.5 to 78 ± 11.5 mmHg (<0.001), and reduction of FiO2 from 1.0 ± 0 to 0.3 ± 0.06 (<0.001). OI decreased by 6.3 % from baseline after the first dose of sildenafil and continued to decrease with subsequent doses. In 6 patients (22%) sildenafil did not work; 5/6 patients (18%) transferred to another tertiary NICU and one patient (4%) died of sepsis. None of the patients had significant systemic hypotension. CONCLUSION Oral sildenafil is a promising pulmonary vasodilator in patients with PPHN, particularly in medical facilities with no available iNO and ECMO. It is well tolerated with no significant short term complications.
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Affiliation(s)
- A Sayed
- Department of Pediatrics, Children and Women's University Hospital, Minia University, El-Minia, Egypt
| | - N Bisheer
- Department of Clinical and Chemical Pathology, Cairo University, Cairo, Egypt
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Staggs SE, Beckman EM, Keely SP, Mackwan R, Ware MW, Moyer AP, Ferretti JA, Sayed A, Xiao L, Villegas EN. The Applicability of TaqMan-Based Quantitative Real-Time PCR Assays for Detecting and Enumerating Cryptosporidium spp. Oocysts in the Environment. PLoS One 2013; 8:e66562. [PMID: 23805235 PMCID: PMC3689768 DOI: 10.1371/journal.pone.0066562] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 05/08/2013] [Indexed: 11/18/2022] Open
Abstract
Quantitative real-time polymerase chain reaction (qPCR) assays to detect Cryptosporidium oocysts in clinical samples are increasingly being used to diagnose human cryptosporidiosis, but a parallel approach for detecting and identifying Cryptosporidium oocyst contamination in surface water sources has yet to be established for current drinking water quality monitoring practices. It has been proposed that Cryptosporidium qPCR-based assays could be used as viable alternatives to current microscopic-based detection methods to quantify levels of oocysts in drinking water sources; however, data on specificity, analytical sensitivity, and the ability to accurately quantify low levels of oocysts are limited. The purpose of this study was to provide a comprehensive evaluation of TaqMan-based qPCR assays, which were developed for either clinical or environmental investigations, for detecting Cryptosporidium oocyst contamination in water. Ten different qPCR assays, six previously published and four developed in this study were analyzed for specificity and analytical sensitivity. Specificity varied between all ten assays, and in one particular assay, which targeted the Cryptosporidium 18S rRNA gene, successfully detected all Cryptosporidium spp. tested, but also cross-amplified T. gondii, fungi, algae, and dinoflagellates. When evaluating the analytical sensitivity of these qPCR assays, results showed that eight of the assays could reliably detect ten flow-sorted oocysts in reagent water or environmental matrix. This study revealed that while a qPCR-based detection assay can be useful for detecting and differentiating different Cryptosporidium species in environmental samples, it cannot accurately measure low levels of oocysts that are typically found in drinking water sources.
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Affiliation(s)
- Sarah E. Staggs
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio, United States of America
| | - Erin M. Beckman
- Dynamac Corporation, Cincinnati, Ohio, United States of America
| | - Scott P. Keely
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio, United States of America
| | - Reena Mackwan
- Dynamac Corporation, Cincinnati, Ohio, United States of America
| | - Michael W. Ware
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio, United States of America
| | - Alan P. Moyer
- Department of Biological Sciences, McMicken School of Arts and Sciences, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - James A. Ferretti
- Region 2, US Environmental Protection Agency, Edison, New Jersey, United States of America
| | - Abu Sayed
- Dynamac Corporation, Cincinnati, Ohio, United States of America
| | - Lihua Xiao
- Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Eric N. Villegas
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio, United States of America
- Department of Biological Sciences, McMicken School of Arts and Sciences, University of Cincinnati, Cincinnati, Ohio, United States of America
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Ali AM, Rajagoppal P, Sayed A, Hakim N, David T, Papalois P. Transplant of kidneys with small renal cell carcinoma in incompatible, heavily immunosuppressed recipients. Ann R Coll Surg Engl 2012; 94:e189-90. [PMID: 22943317 PMCID: PMC3954357 DOI: 10.1308/003588412x13373405384738] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Renal cell carcinoma (RCC) is considered a contraindication for transplant. However, an increasing number of cases of transplant kidneys with RCC have been reported with encouraging results. We present our experience of two cases of transplanting kidneys with small RCCs. Donors and recipients were aware of the presence and possible consequences of RCC in the transplanted kidney before transplantation. Cases were discussed in the multidisciplinary team meetings. Regular, 6-12 monthly follow-up of donors and recipients was carried out with ultrasonography and/or computed tomography to detect recurrence of RCC or new tumours in the recipients' transplant kidneys or the donors' native kidneys. The outcome was recorded. There were no suspicious masses in the any of the kidneys during the follow-up period. The transplant kidneys are functioning.
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Affiliation(s)
- A M Ali
- Imperial College Healthcare Trust, UK.
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Sayed A, Taha A, Elkholy M, Elsharnobi H, Khairy H. Tibial angioplasty in diabetic patients: should all vessels be treated? INT ANGIOL 2012; 31:239-244. [PMID: 22634978] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM Patients with severe critical limb ischemia (CLI) due to tibial disease are commonly treated nowadays with tibial angioplasty. However, the benefits and complications of treating "more than one tibial vessel" have not yet been determined. This study compares the outcome of angioplasty of one vessel versus that of more than one vessel in patients with CLI due to tibial disease. METHODS We retrospectively reviewed all consecutive diabetic patients with tibial disease with no concomitant proximal lesions who were treated by angioplasty. Among 82 patients with isolated tibial disease 48 patients were selected. All patients had to have more than one diseased tibial vessel that can be treated by angioplasty. Group A patients (N.=25) had only one tibial vessel treated while group B patients (N.=23) had more than one tibial vessel treated. We compared both groups with respect to patients' characteristics, lesion morphology, and limb salvage rate. RESULTS Lesion morphology was worse in group A than B: anterior tibial artery showed more long lesions (17 vs. 8), more multiple lesions (22 vs. 11), and peroneal artery showed more long lesions (23 vs. 10), more multiple lesions (24 vs. 12), and more occlusions (18 vs. 10). Limb salvage rate at 12 months was similar (91%) in both groups. There were 5 complications in each group. CONCLUSION The lesion morphology was worse in group A. Simpler lesions in group B motivated performing more than one vessel angioplasty. There was no difference in the limb salvage rate in the medium term among both groups. Additional vessels angioplasty in less diseased arteries was not associated with substantial additional morbidity.
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Affiliation(s)
- A Sayed
- Vascular Surgery Unit, Kasr Alaini Hospital, Cairo University, Cairo, Egypt.
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Dalichaouch-Benchaoui S, Rouabah L, Abadi N, Sellami A, Sayed A, Rouabah A. P016 Prévalence de l’obésite et comportement alimentaire dans une population de l’Est algérien. NUTR CLIN METAB 2011. [DOI: 10.1016/s0985-0562(11)70084-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Dalichaouch-Benchaoui S, Rouabah L, Abadi N, Sellami A, Sayed A, Rouabah A. P190 Prévalence de l’obésité et syndrome métabolique dans la population adulte constantinoise. NUTR CLIN METAB 2011. [DOI: 10.1016/s0985-0562(11)70257-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Sayed A, Wiechman B, Struewing I, Smith M, French W, Nielsen C, Bagley M. Isolation of transcripts from Diabrotica virgifera virgifera LeConte responsive to the Bacillus thuringiensis toxin Cry3Bb1. Insect Mol Biol 2010; 19:381-389. [PMID: 20337747 DOI: 10.1111/j.1365-2583.2010.00998.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Crystal (Cry) proteins derived from Bacillus thuringiensis (Bt) have been widely used as a method of insect pest management for several decades. In recent years, a transgenic corn expressing the Cry3Bb1 toxin has been successfully used for protection against corn rootworm larvae (genus Diabrotica). The biological action of the Bt toxin in corn rootworms has not yet been clearly defined. Because development of resistance to Bt by corn rootworms will have huge economic and ecological costs, insight into larval response to Bt toxin is highly desirable. We identified 19 unique transcripts that are differentially expressed in D. virgifera virgifera larvae reared on corn transgenic for Cry3Bb1. Putative identities of these genes were consistent with impacts on metabolism and development. Analysis of highly modulated transcripts resulted in the characterization of genes coding for a member of a cysteine-rich secretory protein family and a glutamine-rich membrane protein. A third gene that was isolated encodes a nondescript 132 amino acid protein while a fourth highly modulated transcript could not be further characterized. Expression patterns of these four genes were strikingly different between susceptible and resistant western corn rootworm populations. These genes may provide useful targets for monitoring of Bt exposure patterns and resistance development in pest and non-target insect populations.
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Affiliation(s)
- A Sayed
- Dynamac Corporation c/o US Environmental Protection Agency, Cincinnati, OH 45268, USA.
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Araibi A, Maghrabia M, Sayed A, Loughrey JPR, Blunnie WP, Geary M. Successful outcome for mother and twin babies following peri-mortem caesarean section. J OBSTET GYNAECOL 2009; 27:860-1. [DOI: 10.1080/01443610701803743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kandil MR, Ahmed WM, Sayed A, Hamed SA. Pattern Of Epilepsy In Childhood And Adolescence : A Hospital-Based Study. African Journal of Neurological Sciences 2008. [DOI: 10.4314/ajns.v26i1.7592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Atkinson PM, Kew MC, Sayed A, Bradlow BA. The use of Dispholidus typus venom in elucidating the cause of a low prothrombin index. Clin Lab Haematol 2008; 1:281-90. [PMID: 544143 DOI: 10.1111/j.1365-2257.1979.tb01093.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A simple and rapid in vitro test was devised to detect the presence of the prothrombin precursor molecule circulating in the plasma of 55 out of 56 patients receiving oral vitamin K antagonists and in 4 out of 5 patients with obstructive jaundice, using either Dispholidus typus or Echis carinatus venoms. The absence of the molecule from the plasma of jaundiced patients was suggestive of hepatocellular rather than obstructive jaundice. The test is based on the clotting of aluminium hydroxide gel adsorbed plasma by the venoms. It is more sensitive and easier to perform than measuring antigenic prothrombin levels.
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Sayed A, Nekl ER, Siqueira HAA, Wang HC, Ffrench-Constant RH, Bagley M, Siegfried BD. A novel cadherin-like gene from western corn rootworm, Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae), larval midgut tissue. Insect Mol Biol 2007; 16:591-600. [PMID: 17725800 DOI: 10.1111/j.1365-2583.2007.00755.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A cadherin-like gene associated with larval midgut tissues was cloned from western corn rootworm (Diabrotica virgifera virgifera: Coleoptera), an economically important agricultural pest in North America and Europe and the primary target pest species for corn hybrids expressing Cry3 toxins from Bacillus thuringiensis (Bt). The full-length cDNA (5371 bp in length) encodes an open reading frame for a 1688 amino acid polypeptide. The putative protein has similar architecture to cadherin-like proteins isolated from lepidopteran midguts that have been shown to bind to Cry1 Bt toxins and have been implicated in Bt resistance. The D. v. virgifera cadherin-like gene is expressed primarily in the larval midgut and regulated during development, with high levels of expression observed in all instars and adults but not pupae. The corresponding genomic sequence spans more than 90 kb and is interspersed with 30 large introns. The genomic organization of the cadherin-like gene for this coleopteran species bears strong resemblance to lepidopteran cadherins suggesting a common molecular basis for susceptibility to Cry3 toxins in Coleoptera.
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Affiliation(s)
- A Sayed
- Dynamac Corporation, c/o US EPA, Cincinnati, OH 45268, USA.
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Morcos M, Morcos M, Du X, Sayed A, Hutter H, Pfisterer F, Kukudov G, Thornalley P, Baynes J, Thorpe S, Abd El Baki R, Rabbani N. Life extension in Caenorhabditis elegans by overexpression of Glyoxalase I — A mechanistic integration of protein damage by glycation, oxidation and nitratio. Comp Biochem Physiol A Mol Integr Physiol 2007. [DOI: 10.1016/j.cbpa.2007.01.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Akhter P, Padmanabhan A, Babiker W, Sayed A, Molelekwa V, Geary M. Introduction of an early pregnancy assessment unit: audit on the first 6 months of service. Ir J Med Sci 2007; 176:23-6. [PMID: 17849519 DOI: 10.1007/s11845-007-0013-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Women experiencing bleeding in early pregnancy suffer considerable anxiety. Waiting for a considerable time for a diagnosis adds to their grievance. Early Pregnancy Assessment Unit (EPAU) is a dedicated service that provides quick and easy accessibility to diagnosis, treatment and support service. AIM To monitor the first 6 months of the EPAU service in the Rotunda Hospital, to identify its shortcomings, so that we can ensure effective EPAU care in future. METHODS A retrospective audit between July and December 2002 was performed. RESULTS A majority of patients (83.4%) were self-referrals. All patients were seen between 1 and 3 h. In the miscarriage group, 218/278 (78.4%) was managed surgically by evacuation and a further 60/278 (21.6%) received conservative or medical treatment. Among 13 ectopic pregnancies, 5/13 (39%) had laparoscopic management. CONCLUSION This clinic has enabled us to manage early pregnancy bleeding in an effective manner within a satisfactory time period. The high surgical intervention rate for miscarriages is highlighted to support the need for greater emphasis on medical and expectant management.
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Affiliation(s)
- P Akhter
- Department of Obstetrics and Gynaecology, The Rotunda Hospital, Parnell Street, Dublin 1, Ireland.
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Morcos M, Oikonomou D, Ibrahim Y, Kukudov G, Hutter H, Pfisterer F, Sayed A, Hamann A, Humpert P, Bierhaus A, Nawroth P. Neuronale Funktion, Lebenserwartung und Hyperglykämie in C. elegans. DIABETOL STOFFWECHS 2006. [DOI: 10.1055/s-2006-943960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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El-Sherif AM, Sayed A. Efficacy of some diagnostic procedures used for diagnosis of Trypanosomiasis in camels. Journal of Veterinary Medical Research 2005. [DOI: 10.21608/jvmr.2005.78015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Abstract
OBJECTIVES To determine the effectiveness and safety of misoprostol in severe pre-eclampsia and eclampsia patients with unripe cervix. METHODS A prospective observational study was carried out in 135 severe pre-eclampsia and eclampsia patients who required termination of pregnancy at the Department of Obstetrics and Gynecology, Khulna Medical College Hospital, Khulna, Bangladesh during January 2002 to October 2003. Fifty micrograms of misoprostol was used every 4 h in cases of unripe cervix (Bishop score < or = 6) in severe pre-eclampsia and eclampsia patients. Maternal and perinatal outcome as well as any complications were recorded. RESULTS In severe pre-eclampsia and eclampsia patients vaginal delivery occurred in 79.3 and 80.5% of cases, and cesarean section was performed in 20.6 and 19.4% of cases, respectively. The maximum required responsive dose was 50-150 microg. Oxytocin augmentation was required in 29.3 and 35% of cases, respectively. Induction to delivery time was median 8 h, interquartile ranges 4.2-8.2 h in the severe pre-eclampsia group, and median 9 h, interquartile ranges 6.8-12.5 h in the eclampsia group, and average hospital stay was 3.4 +/- 1.8 and 3.7 +/- 1.7 days, respectively. The only maternal complications were hyperstimulation which occurred in 6.8 and 5.1% of cases, respectively. Neonatal death occurred in five (11.3%) and eight cases (12.1%), respectively. CONCLUSION Intravaginal misoprostol is well tolerated and very effective for the induction of labor in severe pre-eclampsia and eclampsia patients with unripe cervix.
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Affiliation(s)
- Shamsun Nahar
- Department of Obstetrics and Gynecology, Khulna Medical College, Khulna, Bangladesh.
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