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Alhasan K, Alsalmi AA, Almaiman W, Al Herbish AJ, Farhat A, Sandokji I, Aloufi M, Faqeehi HY, Abdulmajeed N, Alanazi A, AlHassan A, Alshathri A, Almalki AM, Bafageeh AA, Aldajani AM, AlMuzain A, Almuteri FS, Nasser HH, Al Alsheikh K, Almokali KM, Maghfuri M, Abukhatwah MW, Ahmed MAM, Fatani N, Al-Harbi N, AlDhaferi RF, Amohaimeed S, AlSannaa ZH, Shalaby MA, Raina R, Broering DC, Kari JA, Temsah MH. Insight into prevalence, etiology, and modalities of pediatric chronic dialysis: a comprehensive nationwide analysis. Pediatr Nephrol 2024; 39:1559-1566. [PMID: 38091245 DOI: 10.1007/s00467-023-06245-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 11/15/2023] [Accepted: 11/18/2023] [Indexed: 03/16/2024]
Abstract
BACKGROUND This study aimed to determine the prevalence and etiology of kidney failure (KF) among children below 15 years of age receiving chronic dialysis in Saudi Arabia and describe their dialysis modalities. METHODS This cross-sectional descriptive study was conducted on 8 August 2022, encompassing all 23 pediatric dialysis centers in Saudi Arabia. Data gathered comprised patient demographics, causes of KF, and the dialysis methods employed. Collected data underwent analysis to determine prevalence of children undergoing chronic dialysis, discern underlying causes of KF, and evaluate distribution of patients across different dialysis modalities. RESULTS The prevalence of children on chronic dialysis is 77.6 per million children living in Saudi Arabia, equating to 419 children. The predominant underlying cause of KF was congenital anomalies of the kidneys and urinary tract (CAKUT), representing a substantial 41% of cases. Following this, others or unknown etiologies accounted for a noteworthy 25% of cases, with focal segmental glomerulosclerosis (FSGS) comprising 13%, glomerulonephritis at 11%, and congenital nephrotic syndrome contributing 10% to etiological distribution. Regarding dialysis modalities employed, 67% of patients were on peritoneal dialysis (PD), while the remaining 33% were on hemodialysis (HD). CONCLUSIONS This first nationwide study of pediatric chronic dialysis in Saudi Arabia sheds light on the prevalence of children undergoing chronic dialysis and underlying causes of their KF, thereby contributing to our understanding of clinical management considerations. This research serves as a stepping stone for the development of national registries.
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Affiliation(s)
- Khalid Alhasan
- Pediatric Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.
- Division of Nephrology, Department of Pediatrics, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia.
| | - Amro Attaf Alsalmi
- Division of Nephrology, Department of Pediatrics, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Weiam Almaiman
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Adi J Al Herbish
- Pediatric Nephrology Division, Pediatric Department, King Abdullah Specialized Children Hospital, Ministry of National Guard, Riyadh, Saudi Arabia
| | - Afrah Farhat
- Division of Nephrology, Department of Pediatrics, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Ibrahim Sandokji
- Section of Nephrology, Department of Pediatrics, College of Medicine, Taibah University, Medina, Saudi Arabia
| | - Majed Aloufi
- Pediatric Nephrology Department, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Hassan Yahya Faqeehi
- Division of Pediatric Nephrology, King Fahad Medical City, Children Specialized Hospital, Riyadh, Saudi Arabia
| | - Naif Abdulmajeed
- Pediatric Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Division of Nephrology, Department of Pediatrics, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
- Pediatric Nephrology Department, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Abdulkarim Alanazi
- Division of Pediatric Nephrology, King Fahad Medical City, Children Specialized Hospital, Riyadh, Saudi Arabia
| | - Abdulaziz AlHassan
- Pediatric Department, Maternity and Children Hospital, Ministry of Health, Al Ahsa, Saudi Arabia
| | - Abdulaziz Alshathri
- Pediatric Nephrology Department, King Saud Medical City, Riyadh, Saudi Arabia
| | - Abeer Mohammad Almalki
- Pediatric Nephrology Department, Children's Hospital, Ministry of Health, Taif, Saudi Arabia
| | - Afaf Alawi Bafageeh
- Center of Multi-Organ Transplant, King Fahad Specialist Hospital, Dammam, Saudi Arabia
| | - Ali M Aldajani
- Pediatric Nephrology Department, Maternity Children Hospital, Dammam, Saudi Arabia
| | - Ashraf AlMuzain
- Pediatric Department, King Fahd Hospital of the University, Khobar, Saudi Arabia
| | - Faten Sudan Almuteri
- Pediatric Nephrology Division, Pediatric Department, King Salman Bin Abdulaziz Medical City, Ministry of Health, Madina, Saudi Arabia
| | - Haydar Hassan Nasser
- Division of Nephrology, Pediatric Department, King Fahd Armed Forces Hospital, Jeddah, Saudi Arabia
| | - Khalid Al Alsheikh
- Pediatric Department, Maternity and Children Hospital, Abha, Saudi Arabia
| | - Khamisa Mohamed Almokali
- Pediatric Nephrology Division, Pediatric Department, King Abdullah Specialized Children Hospital, Ministry of National Guard, Riyadh, Saudi Arabia
| | - Magbul Maghfuri
- Pediatric Nephrology Department, King Fahad Central Hospital, Jazan, Saudi Arabia
| | - Mohamed Waleed Abukhatwah
- Pediatric Nephrology Section, Pediatric Department, Alhada Armed Forces Hospital, Taif, Saudi Arabia
| | | | - Naeima Fatani
- Pediatric Department, Maternity and Childcare Hospital, Ministry of Health, Makkah, Saudi Arabia
| | - Naffaa Al-Harbi
- Department of Pediatrics, King Faisal Specialist Hospital & Research Center, Jeddah, Saudi Arabia
| | - Rezqah Fajor AlDhaferi
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Sulaiman Amohaimeed
- Pediatric Department, King Fahad Military Medical Complex, Dhahran, Saudi Arabia
| | | | - Mohamed A Shalaby
- Department of Pediatrics, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pediatric Nephrology Centre of Excellence, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Rupesh Raina
- Department of Nephrology, Akron Children's Hospital, Akron, OH, USA
| | - Dieter Clemens Broering
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Jameela A Kari
- Department of Pediatrics, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pediatric Nephrology Centre of Excellence, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Mohamad-Hani Temsah
- Pediatric Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
- Evidence-Based Healthcare and Knowledge Translation Research Chair, King Saud University, Riyadh, Saudi Arabia.
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Pantel D, Mertens ND, Schneider R, Hölzel S, Kari JA, Desoky SE, Shalaby MA, Lim TY, Sanna-Cherchi S, Shril S, Hildebrandt F. Copy number variation analysis in 138 families with steroid-resistant nephrotic syndrome identifies causal homozygous deletions in PLCE1 and NPHS2 in two families. Pediatr Nephrol 2024; 39:455-461. [PMID: 37670083 PMCID: PMC10979458 DOI: 10.1007/s00467-023-06134-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/06/2023] [Accepted: 08/10/2023] [Indexed: 09/07/2023]
Abstract
BACKGROUND Steroid-resistant nephrotic syndrome (SRNS) is the second most common cause of kidney failure in children and adults under the age of 20 years. Previously, we were able to detect by exome sequencing (ES) a known monogenic cause of SRNS in 25-30% of affected families. However, ES falls short of detecting copy number variants (CNV). Therefore, we hypothesized that causal CNVs could be detected in a large SRNS cohort. METHODS We performed genome-wide single nucleotide polymorphism (SNP)-based CNV analysis on a cohort of 138 SRNS families, in whom we previously did not identify a genetic cause through ES. We evaluated ES and CNV data for variants in 60 known SRNS genes and in 13 genes in which variants are known to cause a phenocopy of SRNS. We applied previously published, predefined criteria for CNV evaluation. RESULTS We detected a novel CNV in two genes in 2 out of 138 families (1.5%). The 9,673 bp homozygous deletion in PLCE1 and the 6,790 bp homozygous deletion in NPHS2 were confirmed across the breakpoints by PCR and Sanger sequencing. CONCLUSIONS We confirmed that CNV analysis can identify the genetic cause in SRNS families that remained unsolved after ES. Though the rate of detected CNVs is minor, CNV analysis can be used when there are no other genetic causes identified. Causative CNVs are less common in SRNS than in other monogenic kidney diseases, such as congenital anomalies of the kidneys and urinary tract, where the detection rate was 5.3%. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Dalia Pantel
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Nils D Mertens
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Ronen Schneider
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Selina Hölzel
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Jameela A Kari
- Department of Pediatrics, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Sherif El Desoky
- Department of Pediatrics, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Mohamed A Shalaby
- Department of Pediatrics, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Tze Y Lim
- Division of Nephrology, Department of Medicine, Columbia University, New York, NY, USA
| | - Simone Sanna-Cherchi
- Division of Nephrology, Department of Medicine, Columbia University, New York, NY, USA
| | - Shirlee Shril
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Friedhelm Hildebrandt
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA.
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Alhasan K, Aljamaan F, Ajlan A, Aleid H, Al Ghoufi T, Alabbad SI, AlDhaferi RF, Almaiman W, Ali T, Hakami AA, Hakami RA, Alqarni BS, Alrashed AS, Alsharidi TR, Almousa HA, Altamimi I, Alhaboob A, Jamal A, Shalaby MA, Kari JA, Raina R, Broering DC, Temsah MH. Awareness, Attitudes, and Willingness: A Cross-Sectional Study of Organ Donation in Saudi Arabia. Healthcare (Basel) 2023; 11:3126. [PMID: 38132016 PMCID: PMC10742515 DOI: 10.3390/healthcare11243126] [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] [Received: 10/10/2023] [Revised: 11/12/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Organ transplantation is inherently dependent on the availability of organ donors. There is a noticeable paucity of literature addressing the rates of organ donation registration and the awareness of Islamic regulations (Fatwa) regarding organ donation within Saudi Arabia. Our study aimed to evaluate the level of organ donation registration, awareness of Islamic regulations, and knowledge of the Saudi Center for Organ Transplantation (SCOT) within the Saudi society. METHODS We conducted a cross-sectional survey from 30 March to 9 April 2023. This survey aimed to assess the awareness of Islamic (Fatwa) guidance on organ donation, the role of SCOT, and the rate of organ donation registration facilitated through the Tawakkalna app, the official health passport application in Saudi Arabia. RESULTS Out of 2329 respondents, 21% had registered as potential deceased organ donors, despite 87% acknowledging the importance of organ donation. Awareness of the Islamic Fatwa regarding organ donation was reported by 54.7% of respondents, and 37% recognized the Fatwa's acceptance of brain death criteria. The likelihood of registration as organ donors was higher among Saudi citizens under 45 years of age, females, healthcare workers (HCWs), individuals with higher education, relatives of patients awaiting organ donations, those informed about the Islamic Fatwas, and those willing to donate organs to friends. Conversely, being over the age of 25, Saudi nationality, employment as an HCW, awareness of SCOT, and prior organ donation registration were predictive of a heightened awareness of Islamic Fatwas. However, perceiving the importance of organ donation correlated with a lower awareness of the Fatwas. Significant positive correlations were found between awareness of SCOT, awareness of Fatwas, and registration for organ donation. CONCLUSIONS While the Saudi population exhibits a high regard for the importance of organ donation, this recognition is not adequately translated into registration rates. The discrepancy may be attributable to limited awareness of SCOT and the relevant Islamic Fatwas. It is imperative to initiate organ donation awareness campaigns that focus on religious authorization to boost organ donation rates and rectify prevalent misconceptions.
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Affiliation(s)
- Khalid Alhasan
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
- Pediatric Department, King Saud University Medical City, King Saud University, Riyadh 11362, Saudi Arabia
| | - Fadi Aljamaan
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
- Critical Care Department, King Saud University Medical City, King Saud University, Riyadh 11362, Saudi Arabia
| | - Aziza Ajlan
- Transplant Clinical Pharmacy Section, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Hassan Aleid
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Talal Al Ghoufi
- Saudi Center of Organ Transplantation, Riyadh 12823, Saudi Arabia
| | - Saleh I. Alabbad
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Rezqah F. AlDhaferi
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Weiam Almaiman
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Tariq Ali
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | | | | | - Baraah S. Alqarni
- Pediatric Department, King Saud University Medical City, King Saud University, Riyadh 11362, Saudi Arabia
| | - Alhanouf S. Alrashed
- Pediatric Department, King Saud University Medical City, King Saud University, Riyadh 11362, Saudi Arabia
| | | | - Hamad A. Almousa
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
| | - Ibraheem Altamimi
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
| | - Ali Alhaboob
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
- Pediatric Department, King Saud University Medical City, King Saud University, Riyadh 11362, Saudi Arabia
| | - Amr Jamal
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
- Family and Community Medicine Department, King Saud University, Riyadh 11362, Saudi Arabia
- Evidence-Based Healthcare and Knowledge Translation Research Chair, King Saud University, Riyadh 11421, Saudi Arabia
| | - Mohamed A. Shalaby
- Evidence-Based Healthcare and Knowledge Translation Research Chair, King Saud University, Riyadh 11421, Saudi Arabia
- Pediatric Nephrology Unit, Faculty of Medicine and Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Jameela A. Kari
- Evidence-Based Healthcare and Knowledge Translation Research Chair, King Saud University, Riyadh 11421, Saudi Arabia
- Pediatric Nephrology Unit, Faculty of Medicine and Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rupesh Raina
- Akron Nephrology Associates, Department of Nephrology, Cleveland Clinic Akron General Medical Center, Akron, OH 44302, USA
| | - Dieter C. Broering
- Kidney and Pancreas Health Center, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Mohamad-Hani Temsah
- College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
- Pediatric Department, King Saud University Medical City, King Saud University, Riyadh 11362, Saudi Arabia
- Evidence-Based Healthcare and Knowledge Translation Research Chair, King Saud University, Riyadh 11421, Saudi Arabia
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4
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Schneider S, Schierbaum L, Burger WAC, Seltzsam S, Wang C, Zheng B, Wilfried Wu CH, Nakayama M, Connaughton DM, Mann N, Shril S, Shalaby MA, Kari JA, ElDesoky S, Tasic V, Eid LA, Thal DM, Hildebrandt F. Recessive CHRM5 variant as a potential cause of neurogenic bladder. Am J Med Genet A 2023; 191:2083-2091. [PMID: 37213061 PMCID: PMC10527291 DOI: 10.1002/ajmg.a.63241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/17/2023] [Accepted: 04/29/2023] [Indexed: 05/23/2023]
Abstract
Neurogenic bladder is caused by disruption of neuronal pathways regulating bladder relaxation and contraction. In severe cases, neurogenic bladder can lead to vesicoureteral reflux, hydroureter, and chronic kidney disease. These complications overlap with manifestations of congenital anomalies of the kidney and urinary tract (CAKUT). To identify novel monogenic causes of neurogenic bladder, we applied exome sequencing (ES) to our cohort of families with CAKUT. By ES, we have identified a homozygous missense variant (p.Gln184Arg) in CHRM5 (cholinergic receptor, muscarinic, 5) in a patient with neurogenic bladder and secondary complications of CAKUT. CHRM5 codes for a seven transmembrane-spanning G-protein-coupled muscarinic acetylcholine receptor. CHRM5 is shown to be expressed in murine and human bladder walls and is reported to cause bladder overactivity in Chrm5 knockout mice. We investigated CHRM5 as a potential novel candidate gene for neurogenic bladder with secondary complications of CAKUT. CHRM5 is similar to the cholinergic bladder neuron receptor CHRNA3, which Mann et al. published as the first monogenic cause of neurogenic bladder. However, functional in vitro studies did not reveal evidence to strengthen the status as a candidate gene. Discovering additional families with CHRM5 variants could help to further assess the genes' candidate status.
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Affiliation(s)
- Sophia Schneider
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Luca Schierbaum
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Wessel A. C. Burger
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Steve Seltzsam
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Chunyan Wang
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Bixia Zheng
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Chen-Han Wilfried Wu
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
- Division of Genetics and Genomics, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Department of Urology and Genetics and Genome Sciences, Case Western Reserve University Hospital, Cleveland, OH 44106, USA
| | - Makiko Nakayama
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Dervla M. Connaughton
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Nina Mann
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Shirlee Shril
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
| | - Mohamed A. Shalaby
- Department of Pediatrics, Pediatric Nephrology Unit, Pediatric Nephrology Center of Excellence, Faculty of Medicine, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Jameela A. Kari
- Department of Pediatrics, Pediatric Nephrology Unit, Pediatric Nephrology Center of Excellence, Faculty of Medicine, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Sherif ElDesoky
- Department of Pediatrics, Pediatric Nephrology Unit, Pediatric Nephrology Center of Excellence, Faculty of Medicine, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Velibor Tasic
- Pediatric Nephrology, University Children’s Hospital, University of Skopje Medical Faculty, Skopje, North Macedonia
| | - Loai A. Eid
- Pediatric Nephrology Department, Dubai Hospital, Dubai, United Arab Emirates
| | - David M. Thal
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Friedhelm Hildebrandt
- Division of Nephrology, Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, 01225, USA
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Abujabal M, Shalaby MA, Abdullah L, Albanna AS, Elzoghby M, Alahmadi GG, Sethi SK, Temsah MH, Aljamaan F, Alhasan K, Kari JA. Common Prognostic Biomarkers and Outcomes in Patients with COVID-19 Infection in Saudi Arabia. Trop Med Infect Dis 2023; 8:tropicalmed8050260. [PMID: 37235308 DOI: 10.3390/tropicalmed8050260] [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] [Received: 02/15/2023] [Revised: 04/28/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Background: COVID-19 is a respiratory disease that eventually became a pandemic, with 300 million people infected around the world. Alongside the improvement in COVID-19 management and vaccine development, identifying biomarkers for COVID-19 has recently been reported to help in early prediction and managing severe cases, which might improve outcomes. Our study aimed to find out if there is any correlation between clinical severity and elevated hematological and biochemical markers in COVID-19 patients and its effect on the outcome. Methods: We have collected retrospective data on socio-demographics, medical history, biomarkers, and disease outcomes from five hospitals and health institutions in the Kingdom of Saudi Arabia. Results: Pneumonia was the most common presentation of COVID-19 in our cohort. The presence of abnormal inflammatory biomarkers (D-dimer, CRP, troponin, LDH, ferritin, and t white blood cells) was significantly associated with unstable COVID-19 disease. In addition, patients with evidence of severe respiratory disease, particularly those who required mechanical ventilation, had higher biomarkers when compared to those with stable respiratory conditions (p < 0.001). Conclusion: Identifying biomarkers predicts outcomes for COVID-19 patients and may significantly help in their management.
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Affiliation(s)
- Mashael Abujabal
- Pediatric Nephrology Unit, Faculty of Medicine and Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohamed A Shalaby
- Pediatric Nephrology Unit, Faculty of Medicine and Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Layla Abdullah
- Pediatric Nephrology Unit, Faculty of Medicine and Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 14611, Saudi Arabia
| | - Mohamed Elzoghby
- Pediatric Intensive Care Unit, Pediatrics Department, College of Medicine, King Abdulaziz University Hospital, Jeddah 21589, Saudi Arabia
| | - Ghadeer Ghazi Alahmadi
- Department of Pediatric, College of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sidharth Kumar Sethi
- Kidney and Renal Transplant Institute, Medanta, The Medicity Hospital, Gurgaon 122001, India
| | - Mohamad-Hani Temsah
- Pediatric Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia
- Prince Abdullah bin Khaled Coeliac Disease Research Chair, King Saud University, Riyadh 11362, Saudi Arabia
| | - Fadi Aljamaan
- Critical Care Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia
| | - Khalid Alhasan
- Pediatric Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Kidney and Pancreas Transplantation, Solid Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 12713, Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Unit, Faculty of Medicine and Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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6
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Fahmy MEA, Abdel-Aal AA, Hassan SI, Shalaby MA, Esmat M, Abdel Shafi IR, Afife AA, Shaheen HAA. The superior efficacy of chloroquine over buparvaquone in reducing the chronic cerebral Toxoplasma gondii cysts load and improving the ultrastructural pathology in an immunocompromised murine model. Trop Biomed 2023; 40:115-123. [PMID: 37356011 DOI: 10.47665/tb.40.1.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Toxoplasma gondii, the etiologic agent of toxoplasmosis, infects about 30 - 50% of the world population. The currently available anti-Toxoplasma agents have serious limitations. The present study aimed to investigate the effects of two antimalarials; buparvaquone (BPQ) and chloroquine (CQ), on immunocompromised mice with chronic cerebral toxoplasmosis, using spiramycin as a reference drug. The assessed parameters included the estimation of mortality rates (MR) among mice of the different study groups, in addition to the examination of the ultrastructural changes in the brain tissues by transmission electron microscopy. The results showed that only CQ treatment could decrease the MR significantly with zero deaths, while both spiramycin and BPQ caused an insignificant reduction of MR compared to the infected non-treated group. All the used drugs decreased the number of mature ruptured cysts significantly compared to the infected non-treated group, while only CQ increased the number of atrophic and necrotic cysts significantly. Furthermore, both spiramycin and BPQ improved the microvasculopathy and neurodegeneration accompanying the infection with different degrees of reactive astrocytosis and neuronal damage with the best results regarding the repair of the microvascular damage with less active glial cells, and normal neurons in the CQ-treated group. In conclusion, this study sheds light on CQ and its excellent impact on treating chronic cerebral toxoplasmosis in an immunocompromised mouse model.
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Affiliation(s)
- M E A Fahmy
- Medical Parasitology Department, Theodor Bilharz Research Institute (TBRI), Giza, Egypt
| | - A A Abdel-Aal
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Egypt
- Department of Postgraduate Studies & Scientific Research, Armed Forces College of Medicine (AFCM), Cairo, Egypt
| | - S I Hassan
- Medical Parasitology Department, Theodor Bilharz Research Institute (TBRI), Giza, Egypt
| | - M A Shalaby
- Medical Parasitology Department, Theodor Bilharz Research Institute (TBRI), Giza, Egypt
| | - M Esmat
- Department of Medical Parasitology, Faculty of Medicine, Misr University for Science and Technology, 6th October city, Egypt
| | - I R Abdel Shafi
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Egypt
| | - A A Afife
- College of Life Sciences, Faculty of Medicine, Leicester University, United Kingdom
| | - H A A Shaheen
- Department of Medical Parasitology, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
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7
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Alfadhel M, Umair M, Alghamdi MA, Al Fakeeh K, Al Qahtani AT, Farahat A, Shalaby MA, Kari JA, Raina R, Cochat P, Alhasan KA. Clinical and molecular characterization of a large primary hyperoxaluria cohort from Saudi Arabia: a retrospective study. Pediatr Nephrol 2022; 38:1801-1810. [PMID: 36409364 PMCID: PMC10154271 DOI: 10.1007/s00467-022-05784-y] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 09/25/2022] [Accepted: 09/28/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Primary hyperoxalurias (PHs) constitute rare disorders resulting in abnormal glyoxalate metabolism. PH-associated phenotypes range from progressive nephrocalcinosis and/or recurrent urolithiasis to early kidney failure. METHODS A retrospective study was conducted for patients with confirmed PH diagnoses from three tertiary centers in Saudi Arabia. Detailed clinical molecular diagnosis was performed for 25 affected individuals. Whole exome sequencing (WES)-based molecular diagnosis was performed for all affected individuals. RESULTS The male:female ratio was 52% male (n = 13) and 48% female (n = 12), and consanguinity was present in 88%. Nephrolithiasis and/or nephrocalcinosis were present in all patients. Kidney stones were present in 72%, nephrocalcinosis in 60%, hematuria in 32%, proteinuria in 16%, abdominal pain in 36%, developmental delay in 8%, and chronic kidney disease stage 5 (CKD stage 5) was observed in 28% of the patients. The most common PH disorder was type I caused by variants in the AGXT gene, accounting for 56%. The GRHPR gene variants were identified in 4 patients, 16% of the total cases. Seven patients did not reveal any associated variants. Missense variants were the most commonly observed variants (48%), followed by frame-shift duplication variants (28%). CONCLUSIONS Characterization of the genetic and clinical aspects of PH in this unique population provides direction for improved patient management and further research. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Majid Alfadhel
- Genetics and Precision Medicine Department (GPM), King Abdullah Specialized Children's Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs (MNG-HA), Riyadh, Saudi Arabia. .,Medical Genomic Research Department, King Abdullah International Medical Research Center(KAIMRC), King Saud Bin Abdulaziz University for Health Sciences(KSAU-HS), Ministry of National Guard Health Affairs (MNG-HA), Riyadh, Saudi Arabia.
| | - Muhammad Umair
- Medical Genomic Research Department, King Abdullah International Medical Research Center(KAIMRC), King Saud Bin Abdulaziz University for Health Sciences(KSAU-HS), Ministry of National Guard Health Affairs (MNG-HA), Riyadh, Saudi Arabia
| | - Malak A Alghamdi
- Medical Genetic Division, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Khalid Al Fakeeh
- Nephrology Division, Department of Pediatrics, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (MNG-HA), Riyadh, Saudi Arabia
| | - Abdullah T Al Qahtani
- Nephrology Division, Department of Pediatrics, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (MNG-HA), Riyadh, Saudi Arabia
| | - Afrah Farahat
- Division of Nephrology, Department of Pediatrics, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, King Abdulaziz University Hospital, Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rupesh Raina
- Department of Nephrology, Cleveland Clinic Akron General and Akron Childrens Hospital, Akron, OH, USA
| | - Pierre Cochat
- Centre de Référence Des Maladies Rénales Rares Néphrogones, Hospices Civils de Lyon & Université Claude-Bernard Lyon 1, Lyon, France
| | - Khalid A Alhasan
- Division of Nephrology, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia.,Division of Pediatric Kidney Transplant, Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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8
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Shalaby MA, Maged AM, Al-Asmar A, El Mahy M, Al-Mohamady M, Rund NMA. Correction: Safety and efficacy of preoperative tranexamic acid in reducing intraoperative and postoperative blood loss in high-risk women undergoing cesarean delivery: a randomized controlled trial. BMC Pregnancy Childbirth 2022; 22:823. [PMID: 36344921 PMCID: PMC9639259 DOI: 10.1186/s12884-022-05102-2] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Mohamed A. Shalaby
- grid.7776.10000 0004 0639 9286Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, 12543 Giza, Egypt
| | - Ahmed M. Maged
- grid.7776.10000 0004 0639 9286Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, 12543 Giza, Egypt
| | - Amira Al-Asmar
- grid.7776.10000 0004 0639 9286Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, 12543 Giza, Egypt
| | - Mohamed El Mahy
- grid.7776.10000 0004 0639 9286Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, 12543 Giza, Egypt
| | - Maged Al-Mohamady
- grid.7776.10000 0004 0639 9286Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, 12543 Giza, Egypt
| | - Nancy Mohamed Ali Rund
- grid.7269.a0000 0004 0621 1570Department of obstetrics and gynecology, Ain Shams University, Cairo, Egypt
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Ahdy AM, Ahmed BM, Elgamal MA, Shaalan MI, Farag IM, Mahfouz ER, Darwish HR, Sayed-Ahmed MZ, Shalaby MA, El-Sanousi AA. Detection of Equid Alphaherpesvirus 1 from Arabian horses with different clinical presentations between 2016-2019 in Egypt. J Equine Vet Sci 2022; 114:103960. [DOI: 10.1016/j.jevs.2022.103960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 04/10/2022] [Accepted: 04/11/2022] [Indexed: 01/09/2023]
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10
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Shalaby MA, Maged AM, Al-Asmar A, El Mahy M, Al-Mohamady M, Rund NMA. Safety and efficacy of preoperative tranexamic acid in reducing intraoperative and postoperative blood loss in high-risk women undergoing cesarean delivery: a randomized controlled trial. BMC Pregnancy Childbirth 2022; 22:201. [PMID: 35287618 PMCID: PMC8919531 DOI: 10.1186/s12884-022-04530-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 02/21/2022] [Indexed: 11/10/2022] Open
Abstract
Background Objective to assess the value of preoperative tranexamic acid (TXA) in reduction of intraoperative and postoperative blood loss in high-risk cesarean delivery (CD). Methods A double blind randomized controlled trial included 160 high risk women who underwent elective lower segment CD. They were equally randomized to receive either 1 g of TXA or placebo 15 min before surgery. The primary outcome was Intraoperative blood loss. Results The estimated blood loss was significantly higher in the placebo group when compared to TXA group (896.81 ± 519.6 vs. 583.23 ± 379.62 ml, P < 0.001). Both postoperative hemoglobin and hematocrit were lower (9.2 ± 1.6 and 27.4 ± 4.1 vs. 10.1 ± 1.2 and 30.1 ± 3.4, P values < 0.001and 0.012 respectively) and their change percentages (15.41 vs. 7.11%, P < 0.001) were higher in the placebo group when compared to TXA one. The need for further ecbolics was higher in placebo group when compared to TXA group (46.25 vs. 13.75%, P < 0.001). Conclusion Preoperative TXA is safe and effective in reducing blood loss during and after high-risk CD. Trial registration ClincalTrial.gov ID: NCT03820206.
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Affiliation(s)
- Mohamed A Shalaby
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, Giza, 12543, Egypt.
| | - Ahmed M Maged
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, Giza, 12543, Egypt
| | - Amira Al-Asmar
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, Giza, 12543, Egypt
| | - Mohamed El Mahy
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, Giza, 12543, Egypt
| | - Maged Al-Mohamady
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, 366 Fardos gardens, 6 October, Giza, 12543, Egypt
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11
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Kari JA, Shalaby MA, Qari FA, Albanna AS, Alhasan KA. Childhood nephrolithiasis and nephrocalcinosis caused by metabolic diseases and renal tubulopathy: A retrospective study from 2 tertiary centers. Saudi Med J 2022; 43:81-90. [PMID: 35022288 PMCID: PMC9280569 DOI: 10.15537/smj.2022.43.1.20210650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To study childhood nephrolithiasis and nephrocalcinosis caused by metabolic disorders, distal renal tubular acidosis (dRTA), and familial hypomagnesemia, hypercalciuria, and nephrocalcinosis (FHHNC). METHODS We retrospectively evaluated 86 children presented over 10 years (2011-2021), with nephrolithiasis (89%) and nephrocalcinosis (11%) caused by metabolic disorders (62%), FHHNC (21%), and dRTA (17%). RESULTS The mean age at discovery was 72.7 months. The underlying metabolic etiologies included hyperoxaluria (38%), cystinuria (32%), hypercalciuria (24%), and hyperuricosuria (6%). Genetic testing was carried out for 23 patients. Hyperoxaluria was typically treated medically (75%). However, the majority progressed to end-stage kidney disease (ESKD). Most children with cystinuria, hypercalciuria, and hyperuricosuria required medical and surgical intervention. Patients with FHHNC typically presented with nephrocalcinosis. Genetic testing revealed Claudin-16 mutations in 7 children. Patients often progressed to stage II-IV chronic kidney disease (61%) and ESKD (6%). Patients with dRTA typically presented with nephrocalcinosis (80%), as well as poor weight gain and failure to thrive (86%), and medical treatment included sodium bicarbonate and potassium replacement. Despite nephrocalcinosis progression, most patients had normal renal function (53%), although the remaining 47% progressed to chronic kidney disease (none reached ESKD). CONCLUSION Childhood nephrolithiasis is mainly related to metabolic disorders and is associated with poor renal outcomes. Nephrocalcinosis and nephrolithiasis have poor outcomes when associated with FHHNC, while nephrocalcinosis associated with dRTA has relatively good renal outcomes.
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Affiliation(s)
- Jameela A. Kari
- From the Department of Pediatrics (Kari, Shalaby), Pediatric Nephrology Center of Excellence; from the Department of Medicine (Qari), King Abdulaziz University, from King Abdullah International Medical Research Center (Albanna), King Saud Bin Abdulaziz University for Health Sciences, Jeddah, and from the Department of Pediatric (Alhasan), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
- Address correspondence and reprint request to: Dr. Jameela A. Kari, Department of Pediatrics, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail: ORCID ID: https://orcid.org/0000-0001-7628-8926
| | - Mohamed A. Shalaby
- From the Department of Pediatrics (Kari, Shalaby), Pediatric Nephrology Center of Excellence; from the Department of Medicine (Qari), King Abdulaziz University, from King Abdullah International Medical Research Center (Albanna), King Saud Bin Abdulaziz University for Health Sciences, Jeddah, and from the Department of Pediatric (Alhasan), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
| | - Faiza A. Qari
- From the Department of Pediatrics (Kari, Shalaby), Pediatric Nephrology Center of Excellence; from the Department of Medicine (Qari), King Abdulaziz University, from King Abdullah International Medical Research Center (Albanna), King Saud Bin Abdulaziz University for Health Sciences, Jeddah, and from the Department of Pediatric (Alhasan), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
| | - Amr S. Albanna
- From the Department of Pediatrics (Kari, Shalaby), Pediatric Nephrology Center of Excellence; from the Department of Medicine (Qari), King Abdulaziz University, from King Abdullah International Medical Research Center (Albanna), King Saud Bin Abdulaziz University for Health Sciences, Jeddah, and from the Department of Pediatric (Alhasan), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
| | - Khalid A. Alhasan
- From the Department of Pediatrics (Kari, Shalaby), Pediatric Nephrology Center of Excellence; from the Department of Medicine (Qari), King Abdulaziz University, from King Abdullah International Medical Research Center (Albanna), King Saud Bin Abdulaziz University for Health Sciences, Jeddah, and from the Department of Pediatric (Alhasan), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
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12
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A Ali A, A Hussein M, A Emara A, Abd Elrahman AM, A Hassan A, A Abdelghaney A, M Bastawey A, M Maher A, N Al-Wadayi AM, A Shalaby M, M Mohamed M, Gamal El Din MA, A Muhammad S, S Ewees A, Nasr-Eldin MS, A Alshrief D, H Mohamed A, Mostafa H, El-Ella AA, Abdel-Maksoud MA, A Ali A, A Hussein M. CEG-AgNPs Ameliorates DMBA-Induced Mammary Carcinogenicity by Alleviating Cytokines Expression. Pak J Biol Sci 2022; 25:485-494. [PMID: 36098183 DOI: 10.3923/pjbs.2022.485.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
<b>Background and Objective:</b> For more than a decade, breast cancer has been one of the most common forms of cancer among women around the world. The present article aimed to evaluate the protective activity of CEG-AgNPs against DMBA-induced mammary carcinoma. <b>Materials and Methods:</b> In this experimental study, green synthesis and characterization of CEG-AgNPs were carried as well as IC<sub>50</sub> against Mcf7 cell line and LD<sub>50</sub> on mice were evaluated. A total of 24 adult albino mice were divided into four groups six rats in each. Group I was given an equal amount of distilled water, group II was received 80 mg kg<sup></sup><sup>1</sup> b.wt., DMBA for 4 weeks, groups III and IV were treated with CEG-AgNPs (28.1 and 70.25 mg kg<sup></sup><sup>1</sup>) from the 5th week of DMBA administration for 4 weeks, respectively. <b>Results:</b> CEG-AgNPs were approximately 42.32±9.52 nm with a negative zeta potential of -17.44. It is IC<sub>50</sub> against the Mcf7 cell line and LD<sub>50</sub> is equal to 82.76 μg mL<sup></sup><sup>1</sup> and 1405 mg kg<sup></sup><sup>1</sup> b.wt., A significant normalization in plasma ALT, AST, AST and LDH as well as mammary MDA, TNF-α, IL-6, P53, SOD, GPx and GSH levels have been observed in CEG-AgNPs treated mice. Oral CEG-AgNPs administration has suppressed VEGF-C gene expression in DMBA-treated mice. <b>Conclusion:</b> The present results, biochemical, histological and MRI results showed that CEG-AgNPs have potent anticancer activity against DMBA-induced mammary carcinoma in mice by inducing the biosynthesizes of antioxidant biomarkers and suppression of cytokines gene expression.
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13
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Alhasan KA, Shalaby MA, Temsah MH, Aljamaan F, Shagal R, AlFaadhel T, Alomi M, AlMatham K, AlHerbish AJ, Raina R, Sethi SK, Alsubaie S, Hakami MH, Alharbi NM, Shebeli RA, Nur HM, Kashari OF, Qari FA, Albanna AS, Kari JA. Factors That Influence Mortality in Critically Ill Patients with SARS-CoV-2 Infection: A Multicenter Study in the Kingdom of Saudi Arabia. Healthcare (Basel) 2021; 9:1608. [PMID: 34946347 PMCID: PMC8701249 DOI: 10.3390/healthcare9121608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Received: 09/08/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND SARS-CoV-2 infection has a high mortality rate and continues to be a global threat, which warrants the identification of all mortality risk factors in critically ill patients. METHODS This is a retrospective multicenter cohort study conducted in five hospitals in the Kingdom of Saudi Arabia (KSA). We enrolled patients with confirmed SARS-COV-2 infection admitted to any of the intensive care units from the five hospitals between March 2020 and July 2020, corresponding to the peak of recorded COVID-19 cases in the KSA. RESULTS In total, 229 critically ill patients with confirmed SARS-CoV-2 infection were included in the study. The presenting symptoms and signs of patients who died during hospitalization were not significantly different from those observed among patients who survived. The baseline comorbidities that were significantly associated with in-hospital mortality were diabetes (62% vs. 48% among patients who died and survived (p = 0.046)), underlying cardiac disease (38% vs. 19% (p = 0.001)), and underlying kidney disease (32% vs. 12% (p < 0.001)). CONCLUSION In our cohort, the baseline comorbidities that were significantly associated with in-hospital mortality were diabetes, underlying cardiac disease, and underlying kidney disease. Additionally, the factors that independently influenced mortality among critically ill COVID-19 patients were high Activated Partial Thromboplastin Time (aPTT )and international normalization ratio (INR), acidosis, and high ferritin.
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Affiliation(s)
- Khalid A Alhasan
- Pediatrics Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia; (K.A.A.); (M.-H.T.); (R.S.); (A.J.A.); (S.A.)
| | - Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Department of Pediatrics, King Abdulaziz University Hospital, Jeddah 21589, Saudi Arabia
| | - Mohamad-Hani Temsah
- Pediatrics Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia; (K.A.A.); (M.-H.T.); (R.S.); (A.J.A.); (S.A.)
| | - Fadi Aljamaan
- Critical Care Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Reem Shagal
- Pediatrics Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia; (K.A.A.); (M.-H.T.); (R.S.); (A.J.A.); (S.A.)
| | - Talal AlFaadhel
- Department of Medicine, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Mohammed Alomi
- Prince Mohammed bin Abdulaziz Hospital, King Salman Center for Kidney Diseases, Ministry of Health, Riyadh 14214, Saudi Arabia;
| | - Khalid AlMatham
- King Fahad Medical City, Ministry of Health, Riyadh 11525, Saudi Arabia;
| | - Adi J. AlHerbish
- Pediatrics Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia; (K.A.A.); (M.-H.T.); (R.S.); (A.J.A.); (S.A.)
| | - Rupesh Raina
- Pediatrics Nephrology, Akron Children’s Hospital, Akron, OH 44241, USA;
- Akron Nephrology Associates, Cleveland Clinic Akron General, Akron, OH 44241, USA
| | | | - Sarah Alsubaie
- Pediatrics Department, College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia; (K.A.A.); (M.-H.T.); (R.S.); (A.J.A.); (S.A.)
| | - Marwah H Hakami
- Pediatric Department, East Jeddah General Hospital, Jeddah 636012, Saudi Arabia; (M.H.H.); (N.M.A.); (R.A.S.); (H.M.N.); (O.F.K.)
| | - Najla M Alharbi
- Pediatric Department, East Jeddah General Hospital, Jeddah 636012, Saudi Arabia; (M.H.H.); (N.M.A.); (R.A.S.); (H.M.N.); (O.F.K.)
| | - Razan A Shebeli
- Pediatric Department, East Jeddah General Hospital, Jeddah 636012, Saudi Arabia; (M.H.H.); (N.M.A.); (R.A.S.); (H.M.N.); (O.F.K.)
| | - Hanan Mohamed Nur
- Pediatric Department, East Jeddah General Hospital, Jeddah 636012, Saudi Arabia; (M.H.H.); (N.M.A.); (R.A.S.); (H.M.N.); (O.F.K.)
| | - Ohoud F Kashari
- Pediatric Department, East Jeddah General Hospital, Jeddah 636012, Saudi Arabia; (M.H.H.); (N.M.A.); (R.A.S.); (H.M.N.); (O.F.K.)
| | - Faiza A Qari
- Department of Medicine, College of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 11481, Saudi Arabia;
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Department of Pediatrics, King Abdulaziz University Hospital, Jeddah 21589, Saudi Arabia
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14
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El Wahed AA, Patel P, Maier M, Pietsch C, Rüster D, Böhlken-Fascher S, Kissenkötter J, Behrmann O, Frimpong M, Diagne MM, Faye M, Dia N, Shalaby MA, Amer H, Elgamal M, Zaki A, Ismail G, Kaiser M, Corman VM, Niedrig M, Landt O, Faye O, Sall AA, Hufert FT, Truyen U, Liebert UG, Weidmann M. Suitcase Lab for Rapid Detection of SARS-CoV-2 Based on Recombinase Polymerase Amplification Assay. Anal Chem 2021; 93:2627-2634. [PMID: 33471510 PMCID: PMC7839158 DOI: 10.1021/acs.analchem.0c04779] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/11/2021] [Indexed: 12/30/2022]
Abstract
In March 2020, the SARS-CoV-2 virus outbreak was declared as a world pandemic by the World Health Organization (WHO). The only measures for controlling the outbreak are testing and isolation of infected cases. Molecular real-time polymerase chain reaction (PCR) assays are very sensitive but require highly equipped laboratories and well-trained personnel. In this study, a rapid point-of-need detection method was developed to detect the RNA-dependent RNA polymerase (RdRP), envelope protein (E), and nucleocapsid protein (N) genes of SARS-CoV-2 based on the reverse transcription recombinase polymerase amplification (RT-RPA) assay. RdRP, E, and N RT-RPA assays required approximately 15 min to amplify 2, 15, and 15 RNA molecules of molecular standard/reaction, respectively. RdRP and E RT-RPA assays detected SARS-CoV-1 and 2 genomic RNA, whereas the N RT-RPA assay identified only SARS-CoV-2 RNA. All established assays did not cross-react with nucleic acids of other respiratory pathogens. The RT-RPA assay's clinical sensitivity and specificity in comparison to real-time RT-PCR (n = 36) were 94 and 100% for RdRP; 65 and 77% for E; and 83 and 94% for the N RT-RPA assay. The assays were deployed to the field, where the RdRP RT-RPA assays confirmed to produce the most accurate results in three different laboratories in Africa (n = 89). The RPA assays were run in a mobile suitcase laboratory to facilitate the deployment at point of need. The assays can contribute to speed up the control measures as well as assist in the detection of COVID-19 cases in low-resource settings.
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Affiliation(s)
- Ahmed Abd El Wahed
- Institute
of Animal Hygiene and Veterinary Public Health, University of Leipzig, 04103 Leipzig, Germany
- Division
of Microbiology and Animal Hygiene, Georg-August-University, 37077 Goettingen, Germany
| | - Pranav Patel
- Expert
Molecular Diagnostics, 82256Fürstenfeldbruck, Germany
| | - Melanie Maier
- Institute
of Medical Microbiology and VirologyLeipzig
University Hospital, 04103 Leipzig, Germany
| | - Corinna Pietsch
- Institute
of Medical Microbiology and VirologyLeipzig
University Hospital, 04103 Leipzig, Germany
| | - Dana Rüster
- Institute
of Animal Hygiene and Veterinary Public Health, University of Leipzig, 04103 Leipzig, Germany
| | - Susanne Böhlken-Fascher
- Division
of Microbiology and Animal Hygiene, Georg-August-University, 37077 Goettingen, Germany
| | - Jonas Kissenkötter
- Division
of Microbiology and Animal Hygiene, Georg-August-University, 37077 Goettingen, Germany
| | - Ole Behrmann
- Institute
of Microbiology & Virology, Brandenburg Medical School, 01968 Senftenberg, Germany
| | - Michael Frimpong
- Kumasi Centre
for Collaborative Research in Tropical Medicine, Department of Molecular
Medicine, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Martin Faye
- Virology
Department, Institute Pasteur de Dakar, BP 220, Dakar, Senegal
| | - Ndongo Dia
- Virology
Department, Institute Pasteur de Dakar, BP 220, Dakar, Senegal
| | - Mohamed A. Shalaby
- Virology
Department, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Haitham Amer
- Virology
Department, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Mahmoud Elgamal
- Virology
Department, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Ali Zaki
- Department
of Medical Microbiology and Immunology, Faculty of Medicine, Ain Shams University, 11591 Cairo, Egypt
| | - Ghada Ismail
- Department
of Clinical Pathology, Faculty of Medicine, Ain Shams University, 11591 Cairo, Egypt
| | - Marco Kaiser
- GenExpress Gesellschaft für Proteindesign, 12103 Berlin, Germany
| | - Victor M. Corman
- Charité−Universitätsmedizin
Berlin, Institute
of Virology, Berlin, Germany
- German Centre for Infection Research (DZIF), 10117 Berlin, Germany
| | | | | | - Ousmane Faye
- Virology
Department, Institute Pasteur de Dakar, BP 220, Dakar, Senegal
| | - Amadou A. Sall
- Virology
Department, Institute Pasteur de Dakar, BP 220, Dakar, Senegal
| | - Frank T. Hufert
- Institute
of Microbiology & Virology, Brandenburg Medical School, 01968 Senftenberg, Germany
| | - Uwe Truyen
- Institute
of Animal Hygiene and Veterinary Public Health, University of Leipzig, 04103 Leipzig, Germany
| | - Uwe G. Liebert
- Institute
of Medical Microbiology and VirologyLeipzig
University Hospital, 04103 Leipzig, Germany
| | - Manfred Weidmann
- Institute
of Microbiology & Virology, Brandenburg Medical School, 01968 Senftenberg, Germany
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15
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Kari JA, Shalaby MA, Albanna AS, Alahmadi TS, Sukkar SA, MohamedNur HAH, AlGhamdi MS, Basri AH, Shagal RA, Alnajar A, Badawi M, Safdar OY, Zaher ZF, Temsah MH, Alhasan KA. Coronavirus disease in children: A multicentre study from the Kingdom of Saudi Arabia. J Infect Public Health 2021; 14:543-549. [PMID: 33756192 PMCID: PMC7981189 DOI: 10.1016/j.jiph.2021.01.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The COVID-19 global pandemic caused by severe acute respiratory syndrome coronavirus 2 infection, warranted attention for whether it has unique manifestations in children. Children tend to develop less severe disease with a small percentage present with clinical manifestations of paediatric multisystem inflammatory syndrome and have poor prognosis. We studied the characteristics of COVID-19 in children requiring hospitalisation in the Kingdom of Saudi Arabia and assessed the clinical presentation and the risk factors for mortality, morbidity, and paediatric intensive care (PICU) admission. METHODS We conducted a retrospective analysis of COVID-19 patients under 15 years hospitalised at three tertiary academic hospitals between 1 March and 30 June 2020. RESULTS Eighty-eight children were enrolled (>20% were infants). Seven (8%) were in critical condition and required PICU admission, and 4 (4.5%) died of which 3 met the full diagnostic criteria of multi-system inflammatory syndrome and had a high Paediatric Risk of Mortality (PRISM) score at the time of admission. The initial polymerase chain reaction (PCR) test result was positive for COVID-19 in most patients (97.7%), and the remaining two patients had positive result in the repeated confirmatory test. In a subset of patients (20 subjects), repeated PCR testing was performed until conversion to negative result, and the average duration for conversion was 8 (95% CI: 5.2-10.5) days Children requiring PICU admission presented with signs of respiratory distress, dehydration, and heart failure. Most had fever (71.4%) and tonsillitis; 61.4% were discharged within 7 days of hospitalisation. Risk factors for mortality included skin rash, hypotension, hypoxia, signs of heart failure, chest radiograph suggestive of acute respiratory distress syndrome, anaemia, leucocytosis, hypernatraemia, abnormal liver enzymes, and high troponin I, and risk factors for prolonged hospitalisation (>7 days) included the presence of comorbidities, leucopaenia, hyponatraemia, and elevated C-reactive protein. CONCLUSIONS The majority of hospitalised children had a brief febrile illness and made a full recovery, but a minority had severe disease.
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Affiliation(s)
- Jameela A Kari
- Paediatric Nephrology Centre of Excellence, Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Mohamed A Shalaby
- Paediatric Nephrology Centre of Excellence, Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Amr S Albanna
- King Abdullah International Medical Research Centre, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Turki S Alahmadi
- Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Samaher A Sukkar
- Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Manar S AlGhamdi
- Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Afnan H Basri
- Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Reem A Shagal
- Paediatrics Department, King Saud University, Riyadh, Saudi Arabia
| | - Abeer Alnajar
- Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mazen Badawi
- Department of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Osama Y Safdar
- Paediatric Nephrology Centre of Excellence, Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Zaher F Zaher
- Department of Paediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Khalid A Alhasan
- Paediatrics Department, King Saud University, Riyadh, Saudi Arabia
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16
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Alhasan KA, Shalaby MA, Albanna AS, Temsah MH, Alhayek Z, Abdalla MS, Alotaibi NG, Kalakattawi NM, Zaher ZF, Kari JA. Comparison of Renal Stones and Nephrocalcinosis in Children: Findings From Two Tertiary Centers in Saudi Arabia. Front Pediatr 2021; 9:736308. [PMID: 35111701 PMCID: PMC8802231 DOI: 10.3389/fped.2021.736308] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Renal stones (nephrolithiasis and urolithiasis) and nephrocalcinosis are uncommon in children; however, their incidences in pediatric populations have been increasing. Patients and Methods: This multicenter retrospective study compared the clinical presentation, etiology, and outcomes of childhood nephrolithiasis or urolithiasis with those of nephrocalcinosis. Results: The study included 144 children: 93 with renal stones and 51 with nephrocalcinosis. The mean age at presentation was 72 months and 54 months for children with renal stones and nephrocalcinosis, respectively. A history of consanguinity was found in 65% and 76% of the cases of renal stones and nephrocalcinosis, respectively. Congenital anomalies of the kidneys and urinary tract (CAKUT) were present in 28 and 9.8% of the patients with renal stones and nephrocalcinosis, respectively. The most common symptoms of renal stones were flank pain (29%), hematuria (15%), and dysuria (11%). Urinary tract infection was the primary presentation in the nephrocalcinosis group (18%), followed by failure to thrive (16%), polyuria (12%), and dehydration (12%). The majority of renal stone cases were caused by metabolic disorders, including hyperoxaluria (18%), cystinuria (18%), hypercalciuria (12%), and hyperuricosuria (2%). In contrast, the most common underlying disorders in cases of nephrocalcinosis were familial hypomagnesemia, hypercalciuria, nephrocalcinosis (35%), distal renal tubular acidosis (23%), and Bartter syndrome (6%). Clinical outcomes were significantly better in children with nephrolithiasis/urolithiasis than in those with nephrocalcinosis, who showed radiological evidence of worsening/persistent calcinosis and progressed more frequently to chronic kidney disease (stage II-IV) and end-stage kidney disease. Conclusion: The average age at presentation for children with renal stones was greater than that for those presenting with nephrocalcinosis. More than 25% of the children with renal stones were found to have CAKUT. Nephrocalcinosis was associated with worse clinical outcomes related to kidney function and disease resolution than nephrolithiasis.
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Affiliation(s)
- Khalid A Alhasan
- Pediatrics Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia.,Pediatrics Department, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Mohamad-Hani Temsah
- Pediatrics Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia.,Pediatrics Department, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Zainab Alhayek
- Pediatrics Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed S Abdalla
- Pediatrics Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Najlaa G Alotaibi
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nada M Kalakattawi
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Zaher Faisal Zaher
- Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
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17
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Kari JA, Alhasan KA, Albanna AS, Safdar OY, Shalaby MA, Böckenhauer D, El-Desoky SM. Rituximab versus cyclophosphamide as first steroid-sparing agent in childhood frequently relapsing and steroid-dependent nephrotic syndrome. Pediatr Nephrol 2020; 35:1445-1453. [PMID: 32337638 DOI: 10.1007/s00467-020-04570-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/20/2020] [Accepted: 04/06/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND Approximately 50% of children with steroid-sensitive nephrotic syndrome (SSNS) will suffer from frequent relapses or steroid dependency, prompting the use of so-called steroid-sparing drugs. In this pilot study, we compare the efficacy and safety of rituximab to oral cyclophosphamide as first-line steroid-sparing medications. METHODS A prospective open-label non-randomized study of children with frequent relapsing or steroid-dependant SSNS. Exclusion criteria were steroid-resistant disease, prescription of immunosuppressive agents other than prednisolone or levamisole, evidence of impaired kidney function, leucopenia, or active infection. The recruited children were allocated either to the oral cyclophosphamide (3 mg/kg/day for 8 weeks) or intravenous rituximab treatment (two doses of 375 mg/m2/dose, 2 weeks apart) and were monitored for relapses and side effects for 12 months. RESULTS Forty-six subjects were included from two centers; 27 received cyclophosphamide and 19 received rituximab. One-year relapse-free survival was reached in 17 (58.6%) patients treated with cyclophosphamide compared to 16 (84.2%) with rituximab (adjusted HR 0.36; 95% CI 0.09-1.45; p = 0.151). The mean interval to relapse was 6.9 months in the cyclophosphamide group (N = 10) and 6.3 months in the rituximab group (N = 3). Both treatments were associated with a significant (p < 0.001) reduction in prescribed dose of oral alternate-day steroid from 1.02 to 0.36 mg/kg (cyclophosphamide) and 0.86 to 0.08 mg/kg (rituximab). Importantly, a significantly (p = 0.003) higher percentage of patients achieved complete withdrawal of steroid within 3 months of commencing study treatment in the rituximab (73.7%) versus cyclophosphamide (29.6%) group. Transient leucopenia was the most frequent adverse effect observed in the cyclophosphamide group (18.5%) and one patient (3.4%) had acute hepatotoxicity besides severe leucopenia and neutropenia in the 7th week of treatment with complete recovery with the withdrawal of cyclophosphamide and maintenance of remission. A minor infusion-related reaction in the form of a generalized macular skin rash was observed in one patient (5%) in the rituximab group. CONCLUSIONS Rituximab is non-inferior to cyclophosphamide and safe as a first-line steroid-sparing agent in children with SSNS. A larger multicenter study is required to assess superiority over cyclophosphamide. Graphical abstract.
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Affiliation(s)
- Jameela A Kari
- Faculty of Medicine, King Abduaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia. .,Paediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Khalid A Alhasan
- Pediatrics Department, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Kingdom of Saudi Arabia
| | - Osama Y Safdar
- Faculty of Medicine, King Abduaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.,Paediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Mohamed A Shalaby
- Faculty of Medicine, King Abduaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.,Paediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Detlef Böckenhauer
- Department of Renal Medicine, University College London, London, UK.,Renal Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Sherif M El-Desoky
- Faculty of Medicine, King Abduaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.,Paediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
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18
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Ahmed BM, Amer HM, Kissenkoetter J, El Wahed AA, Bayoumi MM, Böhlken-Fascher S, Elgamal MA, Yehia N, Yousif AA, Shalaby MA. Corrigendum to "Evaluating two approaches for using positive control in standardizing the avian influenza H5 reverse transcription recombinase polymerase amplification assay". [Mol. Cell. Probes 50 (2020) 101511]. Mol Cell Probes 2020; 53:101616. [PMID: 32593485 DOI: 10.1016/j.mcp.2020.101616] [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: 10/24/2022]
Affiliation(s)
- Basem M Ahmed
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Haitham M Amer
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Jonas Kissenkoetter
- Division of Microbiology and Animal Hygiene, University of Goettingen, Goettingen, Germany
| | - Ahmed Abd El Wahed
- Division of Microbiology and Animal Hygiene, University of Goettingen, Goettingen, Germany
| | - Mahmoud M Bayoumi
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Susane Böhlken-Fascher
- Division of Microbiology and Animal Hygiene, University of Goettingen, Goettingen, Germany
| | - Mahmoud A Elgamal
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Nahed Yehia
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Giza, Egypt
| | - Ausama A Yousif
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mohamed A Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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19
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Safdar OY, Alhasan KA, Shalaby MA, Khathlan N, Al Rezgan SA, Albanna AS, Kari JA. Correction to: Short-term outcome associated with disease severity and electrolyte abnormalities among critically ill children with acute kidney injury. BMC Nephrol 2020; 21:137. [PMID: 32299381 PMCID: PMC7164215 DOI: 10.1186/s12882-020-01790-0] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Osama Y Safdar
- Pediatric Nephrology Center of Excellence, Pediatric Department, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Khalid A Alhasan
- Pediatrics Department, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, Pediatric Department, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Norah Khathlan
- Pediatric Intensive Care Unit, Department of Pediatrics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | | | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Kingdom of Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, Pediatric Department, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
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20
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Ahmed BM, Amer HA, Kissenkoetter J, El Wahed AA, Bayoumi MM, Böhlken-Fascher S, Elgamal MA, Yehia N, Yousif AA, Shalaby MA. Evaluating two approaches for using positive control in standardizing the avian influenza H5 reverse transcription recombinase polymerase amplification assay. Mol Cell Probes 2020; 50:101511. [PMID: 31953221 DOI: 10.1016/j.mcp.2020.101511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/06/2020] [Accepted: 01/13/2020] [Indexed: 02/06/2023]
Abstract
Highly pathogenic avian influenza H5N1 virus causes heavy losses in poultry farms worldwide. Molecular diagnostic techniques like RT-PCR and real-time RT-PCR are considered the gold standard for identification of H5 influenza viruses in clinical samples. These techniques are hampered by the need of well-equipped laboratories, large space requirement, and relatively long time-to-result. Recombinase polymerase amplification (RPA) assay represents an excellent alternative to PCR since it is more simple, rapid, economic, and portable. Reverse transcription RPA (RT-RPA) assay was recently developed for sensitive and specific detection of H5N1 virus in 6-10 min. To ensure the accuracy of the developed assay, two approaches for using a positive control were evaluated in this study. These approaches included: 1) all-in-one (internal positive control; IPC), 2) two-tubes-per-one-sample (external positive control; EPC). Sigma virus (SIGV) RNA and turkey mitochondrial DNA were tested as positive controls in both approaches. For all-in-one approach, both targets (H5 and IPC) were strongly inhibited. In contrast, very good amplification signals were obtained for the two types of EPC with no effect on the analytical sensitivity and specificity of H5 RT-RPA assay in two-tubes-per-one-sample approach. The performance of EPC-based H5 RT-RPA was further validated using 13 tracheal swabs. The results were compared to real-time RT-PCR and proved superior specificity in detecting H5N1 but not H5N8 viruses. Inclusion of EPC did not affect the aptitude of both assays in terms of sensitivity, specificity and reproducibility. In conclusion, the two-tubes-per-one-sample approach was more reliable to control the false negative results in H5 RT-RPA assay.
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Affiliation(s)
- Basem M Ahmed
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Haitham A Amer
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Jonas Kissenkoetter
- Division of Microbiology and Animal Hygiene, University of Goettingen, Goettingen, Germany
| | - Ahmed Abd El Wahed
- Division of Microbiology and Animal Hygiene, University of Goettingen, Goettingen, Germany
| | - Mahmoud M Bayoumi
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Susane Böhlken-Fascher
- Division of Microbiology and Animal Hygiene, University of Goettingen, Goettingen, Germany
| | - Mahmoud A Elgamal
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Nahed Yehia
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Giza, Egypt
| | - Ausama A Yousif
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mohamed A Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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21
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Maged AM, Fawzi T, Shalaby MA, Samy A, Rabee MA, Ali AS, Hussein EA, Hammad B, Deeb WS. A randomized controlled trial of the safety and efficacy of preoperative rectal misoprostol for prevention of intraoperative and postoperative blood loss at elective cesarean delivery. Int J Gynaecol Obstet 2019; 147:102-107. [PMID: 31304593 DOI: 10.1002/ijgo.12922] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/18/2019] [Accepted: 07/12/2019] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To assess the safety and efficacy of preoperative rectal misoprostol for the prevention of intraoperative and postoperative blood loss in women undergoing elective cesarean delivery. METHODS A single-blind randomized controlled trial of 200 full-term pregnant women scheduled for elective cesarean delivery. Computer-generated randomization allocated women to receive 400 μg rectal misoprostol at urinary catheter insertion plus 400 μg rectally after abdominal closure (preoperative group, n=100) or 800 μg of rectal misoprostol after abdominal closure (postoperative group, n=100). Primary outcome was intraoperative blood loss. RESULTS Intraoperative blood loss was significantly lower in the preoperative misoprostol group compared with the postoperative group (528.7 ± 114.8 mL vs 788.6 ± 165.8 mL; P<0.001). Blood loss during the first 24 hours after delivery was also lower in the preoperative group (199.3 ± 84.5 mL vs 302.9 ± 125.6 mL; P<0.001). Fewer women in the preoperative group needed additional uterotonics (7 vs 21; P<0.001). After delivery, the decrease in both hemoglobin and hematocrit levels was significantly less in the preoperative group (-6.8 vs -12.8% and -6.05 vs -17.8%, respectively; P<0.001). CONCLUSION Preoperative rectal administration of misoprostol significantly reduced intraoperative and postoperative blood loss during and after elective cesarean delivery. ClinicalTrial.gov ID: NCT03680339. Date of registration 9/2018.
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Affiliation(s)
- Ahmed M Maged
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Tarek Fawzi
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Mohamed A Shalaby
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Ahmed Samy
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Mohamed A Rabee
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | | | - Eman A Hussein
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Bahaa Hammad
- Department of Obstetrics and Gynecology, Kasr Al-Ainy Hospital, Cairo University, Cairo, Egypt
| | - Wesam S Deeb
- Department of Obstetrics and Gynecology, Fayoum University, Fayoum, Egypt
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22
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Safder OY, Alhasan KA, Shalaby MA, Khathlan N, Al Rezgan SA, Albanna AS, Kari JA. Short-term outcome associated with disease severity and electrolyte abnormalities among critically ill children with acute kidney injury. BMC Nephrol 2019; 20:89. [PMID: 30866849 PMCID: PMC6417256 DOI: 10.1186/s12882-019-1278-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 03/05/2019] [Indexed: 12/29/2022] Open
Abstract
Background Acute kidney injury (AKI) in critically ill children is associated with increased mortality and morbidity. In this study we evaluated the effect of AKI severity on the incidence of short-term mortality and morbidity. Methods Multicenter prospective cohort study was conducted over two years period. We used the Kidney Disease Improving Global Outcomes (KDIGO) to diagnose and stage AKI. Results A total of 511 out of 1367 included children (37.4%; 95% CI: 34.8–40.0) were diagnosed with AKI. They were categorized into three KDIGO stages: stage I (mild) in 47.5% (95% CI: 43.2–52.0), stage II (moderate) in 32.8% (95% CI: 28.8–37.1) and stage III (severe) in 19.7% (95% CI: 16.4–23.5). Stage II and III AKI had higher risk of mortality and longer length of stay (LOS) in hospital. Children with stage III AKI were more likely to require mechanical ventilation, referral to pediatric nephrology and discharge with abnormal creatinine level (above 100 uml\L). Hypervolemia, hypocalcemia, anemia, and acidosis were found to be independent risk factors of mortality. Conclusion The extent of severity of AKI is directly associated with increased mortality, LOS and short-term morbidity.
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Affiliation(s)
- Osama Y Safder
- Pediatric Nephrology Center of Excellence, Pediatric Department, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Khalid A Alhasan
- Pediatrics Department, College of Medicine. King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, Pediatric Department, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Norah Khathlan
- Pediatric Intensive Care Unit, Department of Pediatrics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | | | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Kingdom of Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, Pediatric Department, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
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23
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Radwan MM, El-Deeb AH, Mousa MR, El-Sanousi AA, Shalaby MA. First report of fowl adenovirus 8a from commercial broiler chickens in Egypt: molecular characterization and pathogenicity. Poult Sci 2019; 98:97-104. [PMID: 30690614 DOI: 10.3382/ps/pey314] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 06/27/2018] [Indexed: 11/20/2022] Open
Abstract
This study was performed to isolate fowl adenovirus (FAdV) circulating in commercial meat-type chicken in Egypt during 2015 and to identify the pathogenicity of the isolated virus. Cloacal swabs were collected from 9 commercial broiler farms from chickens of 3-5 wk of age in Behira province in Egypt during 2015. FAdV was isolated on chicken embryo liver cells. The virus was identified by conventional polymerase chain reaction targeting a conserved region in the hexon gene. Moreover, phylogenetic analysis of the L1 loop of the hexon gene revealed that the isolated viruses clustered with reference strains belonging to FAdV serotype 8a. This is the first record of FAdV from Egypt on the GenBank. The isolated virus is closely related to strains directly associated with inclusion body hepatitis (IBH) causing considerable economic losses. Pathogenicity study of the virus did not show any mortality, although necropsy and histopathological examination displayed severe hepatitis and degenerative changes in the immune system after 5 d from infection, proving that the virus can cause IBH with intermittent shedding.
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Affiliation(s)
- Mohamed M Radwan
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo 11361, Egypt.,Boehringer Ingelheim scientific office, Cairo 11361, Egypt
| | - Ayman H El-Deeb
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo 11361, Egypt
| | - Mohamed R Mousa
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Cairo 11361, Egypt
| | - Ahmed A El-Sanousi
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo 11361, Egypt
| | - Mohamed A Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo 11361, Egypt
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Mahana O, Arafa AS, Erfan A, Hussein HA, Shalaby MA. Pathological changes, shedding pattern and cytokines responses in chicks infected with avian influenza-H9N2 and/or infectious bronchitis viruses. Virusdisease 2019; 30:279-287. [PMID: 31179367 DOI: 10.1007/s13337-018-00506-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 08/26/2018] [Accepted: 12/22/2018] [Indexed: 01/21/2023] Open
Abstract
Avian influenza H9N2 (AIV-H9N2) and Infectious bronchitis (IB) viruses are the most commonly isolated viruses from poultry flocks suffering from respiratory signs with mortalities. The outcome of co-infection with both viruses hasn't been yet well understood. In this study, eighty 1-day-old specific pathogen free chicks were divided into four distinct groups. Group 1 remained uninfected as negative control group; groups 2, 3 and 4 were inoculated with either AIV-H9N2 or IBV or co infected with AIV-H9N2 followed by IBV three days post inoculation respectively. Chicks were monitored for clinical and pathological changes, virus shedding and both Interleukin-6 (IL6) and Interferon gamma (IFNγ) cytokines immune responses. Clinical signs varied from mild to moderate respiratory signs in all challenged groups but were more severe in group 4 with mortalities in groups 3 and 4. Tracheal shedding of both viruses washigher in group 4 than group 2 and 3. Mean AIV-H9 virus titer in lung and kidney was higher in group 4 than group 2 in all time points. IFNγ mRNA gene expression in lung was significantly lower in groups3 and 4. In conclusion, this study reports that co-infection of chicks with both viruses enhances the pathogenicity, increases both viruses shedding and extend AIV-H9 replication with impairment of IFNγ stimulation in lung.
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Affiliation(s)
- Osama Mahana
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264, Dokki, Giza, 12618 Egypt
| | - Abdel-Sattar Arafa
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264, Dokki, Giza, 12618 Egypt
| | - Ahmed Erfan
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264, Dokki, Giza, 12618 Egypt
| | - Hussein A Hussein
- 2Deparment of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211 Egypt
| | - Mohamed A Shalaby
- 2Deparment of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211 Egypt
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Shaheen HA, Hussein HA, Elsafty MM, Shalaby MA. Genetic resistance of eight native Egyptian chicken breeds having chicken B-cell marker 6 gene post-challenge with field strain of Marek's disease-induced tumor virus. Vet World 2018; 11:1510-1515. [PMID: 30532510 PMCID: PMC6247869 DOI: 10.14202/vetworld.2018.1510-1515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 09/24/2018] [Indexed: 11/16/2022] Open
Abstract
Aim: The aim of this work was to detect chicken B-cell marker 6 (ChB6) gene in some native breeds in Egypt and find the relationship between founded genes in these different breeds to determine the resistance of native Egyptian breeds of chicken to Marek’s disease (MD). Materials and Methods: A total of 14 different chicken breeds (30 each) including ten native breeds in addition to SPF Lohmann, High Line, Bovans, and Roodiland were used. Blood samples were collected for the detection of (ChB6) by polymerase chain reaction (PCR) assay and sequenced to determine the presence or absence of ChB6 gene. Experimental infection was done using local field isolated MD virus (MDV) of 11 (1 day old) unvaccinated chick breeds having no maternal antibodies against MDV. Ten breeds of them carry ChB6 gene, eight breeds were native, and the rest two breeds were SPF Lohmann and High Line in addition to a group of ChB6 gene-lacking breed (Bovans) were infected. Spleen samples were collected from all infected breeds at 20th, 25th, 30th, 35th, and 40th weeks post-infection and tested by PCR assay for the detection of MDV. Furthermore, at 40th week post-infection, tumorized spleen sample of Bovans breed was collected and prepared for examination by transmission electron microscope (TEM) to confirm the presence of MDV. Results: Our results revealed the positivity of 10 out of 14 breeds (Gimmizah, Sinai, Dandarawi, Fayoumi, Golden Montazah, Matrouh, Beheri, Dokki, SPF Lohmann, and High Line) to the presence of ChB6 gene and resistance to MDV infection, while the Bovans, Mandarah, Inshas and Roodiland breeds lack the ChB6 gene and are susceptible to MDV infection. The collected spleen samples revealed negative for the presence of challenged MDV by PCR in 10 breeds (Gimmizah, Sinai, Dandarawi, Fayoumi, Golden Montazah, Matrouh, Beheri, Dokki, SPF Lohmann, and High Line) and positive for Bovans breed. TEM is used to confirm MDV infection in Bovans group which demonstrated tumors. Conclusion: The study confirms the relationship between the presence of ChB6 gene in our native breeds and the absence of tumors.
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Affiliation(s)
- Hala A Shaheen
- Central Laboratory for Evaluation of Veterinary Biologics, Cairo, Egypt
| | - H A Hussein
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - M M Elsafty
- Central Laboratory for Evaluation of Veterinary Biologics, Cairo, Egypt
| | - M A Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Mosaad Z, Arafa A, Hussein HA, Shalaby MA. In silico thermodynamic stability of mammalian adaptation and virulence determinants in polymerase complex proteins of H9N2 virus. J Genet Eng Biotechnol 2018; 16:757-767. [PMID: 30733797 PMCID: PMC6353722 DOI: 10.1016/j.jgeb.2018.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 01/01/2018] [Accepted: 02/17/2018] [Indexed: 11/16/2022]
Abstract
The polymerase complex proteins (PB2, PB1, and PA) are responsible primarily for the replication of avian influenza virus and play an important role in virus virulence, mammalian adaptation, and interspecies transmission. In this study; eight Egyptian LPAI-H9N2 viruses isolated from apparent healthy chickens and quails from 2014 to 2016. Characterization of complete nucleotide sequences, phylogenetic and mutation analysis were carried out. The measurement of thermodynamic stability of the H9N2 polymerase protein in comparison to human H3N2 and H1N1 proteins was carried out using in silico method. Phylogenetic analysis of these viruses revealed a close relationship to viruses isolated from neighboring Middle Eastern countries with an average of 96-99% homology. They are sharing the common ancestor A/quail/Hong Kong/G1/1997 (G1-Like) without any evidence for genetic reassortment. In addition, eight markers related to virulence were identified, including the combination of 627V and 391E in the PB2 gene with full-length PB1-F2 and PA-X proteins were observed in all viruses and the substitution N66S in PB1-F2 which suggest increasing virus virulence. Moreover, six markers that may affect the virus replication and transmission in mammalian hosts were identified. Five mutations related to mammalian adaptation show a structural stabilizing effect on LPAI-H9N2 polymerase complex protein according to the free-energy change (ΔΔG). Three out of those six adaptive mutations shown to increase polymerase complex protein stability were found in Egyptian LPAI-H9N2 viruses similar to Human H3N2 and H1N1 (661 in PB2, 225 and 409 in PA genes). Our results suggested that the stabilizing mutations in the polymerase complex protein have likely affected the protein structure and induced favorable conditions for avian virus replication and transmission in mammalian hosts. Indeed, the study reports the mutational analysis of the circulating LPAI-H9N2 strains in Egypt.
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Affiliation(s)
- Zienab Mosaad
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264-Dokki, Giza 12618, Egypt
| | - Abdelsatar Arafa
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264-Dokki, Giza 12618, Egypt
| | - Hussein A. Hussein
- VirologyDept, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Mohamed A. Shalaby
- VirologyDept, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
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Hansen S, Dill V, Shalaby MA, Eschbaumer M, Böhlken-Fascher S, Hoffmann B, Czerny CP, Abd El Wahed A. Serotyping of foot-and-mouth disease virus using oxford nanopore sequencing. J Virol Methods 2018; 263:50-53. [PMID: 30393148 DOI: 10.1016/j.jviromet.2018.10.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 06/14/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 10/28/2022]
Abstract
Foot-and-mouth disease virus (FMDV), belonging to the family of Picornaviridae, infects mostly cloven-hoofed animals and leads to huge economic losses. Since there is no cross-protection between the seven serotypes of FMDV, effective vaccination relies on the knowledge of the serotype causing the outbreak. The most common methods of serotyping are antigen ELISAs and amplification-based sequencing. Serotype-specific PCR methods exist but have limitations due to emerging mutants within serotypes. Sequencing is a promising technology, but currently suffers from cumbersome procedures and long turnaround times. In this study, we have established a novel sequencing protocol relying on nanopore sequencing and offline BLAST search. The procedure was completed in 5 h including RNA extraction, reverse transcription, second-strand synthesis, barcoding, sequencing and data analysis, which did not require a bioinformatician. In total, 12,193 sequence files were obtained. The offline BLAST search to the P1 region revealed the most successful categorization of the seven FMDV serotypes (specificity: 98.3%) over whole genome (24.8%), P2 (23.6%) and P3 (21.4%). In conclusion, our protocol enables rapid and reliable FMDV serotyping. The whole procedure can be conducted with a mobile suitcase laboratory, which is easy to use at the point of need in endemic countries.
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Affiliation(s)
- Sören Hansen
- Division of Microbiology and Animal Hygiene, University of Goettingen, Burckhardtweg 2, D-37077 Goettingen, Germany.
| | - Veronika Dill
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Suedufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - Mohamed A Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt
| | - Michael Eschbaumer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Suedufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - Susanne Böhlken-Fascher
- Division of Microbiology and Animal Hygiene, University of Goettingen, Burckhardtweg 2, D-37077 Goettingen, Germany
| | - Bernd Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Suedufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - Claus-Peter Czerny
- Division of Microbiology and Animal Hygiene, University of Goettingen, Burckhardtweg 2, D-37077 Goettingen, Germany
| | - Ahmed Abd El Wahed
- Division of Microbiology and Animal Hygiene, University of Goettingen, Burckhardtweg 2, D-37077 Goettingen, Germany
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Shalaby MA, Sawan ZA, Nawawi E, Alsaedi S, Al-Wassia H, Kari JA. Incidence, risk factors, and outcome of neonatal acute kidney injury: a prospective cohort study. Pediatr Nephrol 2018; 33:1617-1624. [PMID: 29869723 DOI: 10.1007/s00467-018-3966-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Acute kidney injury (AKI) is common in neonates admitted to the neonatal intensive care unit (NICU). AKI is associated with increased morbidity and mortality and a greater long-term risk of chronic kidney disease. OBJECTIVES To study the incidence and outcome of neonatal AKI in a single Saudi Arabian center, level 2\3 NICU. METHODS This single-center prospective cohort study included all infants who received level II or III NICU care during 2015 (January to December). We excluded infants who survived less than 48 h after admission, had evidence of congenital renal anomalies, or had insufficient data. AKI was defined according to the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Both AKI and non-AKI neonates were prospectively followed up until NICU discharge. Outcomes studied included mortality and length of NICU stay. The results of adjusted risk analyses were expressed as relative risk (RR) with 95% confidence interval (95% CI). RESULTS The incidence of AKI (modified neonatal KDIGO stages) was 56% (120/214 patients). Compared with neonates without AKI, those with AKI had a lower birth weight (2202 ± 816 vs. 1570 ± 776 g; p < 0.001) and a lower gestational age (35 ± 3 vs. 32 ± 4 weeks; p < 0.001). After adjustment for potential confounders, only gestational age (RR, 4.8; 95% CI, 3-9) and perinatal depression (RR, 10; 95% CI, 2-46) were significantly associated with an increased risk of AKI. For infants with gestational age < 32 weeks, only the Clinical Risk Index for Babies (CRIB II) score was associated with an increased risk of AKI (RR, 1.9; 95% CI, 1-3). After adjustment for gestational age, AKI was significantly associated with mortality (RR, 5.4; 95% CI, 2-14), but not with the length of hospital stay (LOS) (p = 0.133). However, the AKI group had a significantly longer LOS (mean difference: 14 days; 95% CI, 5.5-23 days), and 33 patients (27.5%) with AKI were discharged with abnormally high serum creatinine levels (> 65 μmol/L). CONCLUSION AKI occurred in more than half of all NICU admissions, was associated with an increased risk of mortality, and had a higher incidence among smaller and sicker infants. Therefore, close monitoring of renal function during hospitalization and after discharge is warranted in such infants.
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Affiliation(s)
- Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Zinab A Sawan
- Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Esraa Nawawi
- Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Saad Alsaedi
- Neonatal Intensive Care Unit, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Heidi Al-Wassia
- Neonatal Intensive Care Unit, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
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Kari JA, Alhasan KA, Shalaby MA, Khathlan N, Safdar OY, Al Rezgan SA, El Desoky S, Albanna AS. Outcome of pediatric acute kidney injury: a multicenter prospective cohort study. Pediatr Nephrol 2018; 33:335-340. [PMID: 28917005 DOI: 10.1007/s00467-017-3786-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/26/2017] [Accepted: 08/10/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Acute kidney injury (AKI) is a common problem encountered in critically ill children with an increasing incidence and evolving epidemiology. AKI carries a serious morbidity and mortality in patients requiring admission to a pediatric intensive care unit (PICU). METHODS We undertook a prospective cohort study of PICU admissions at three tertiary care hospitals in the Kingdom of Saudi Arabia over 2 years. The Kidney Disease Improving Global Outcomes (KDIGO) definition was used to diagnose AKI. RESULTS A total of 1367 pediatrics PICU admissions were included in the study. AKI affected 511 children (37.4%), with 243 children (17.8%) classified as stage I (mild), 168 patients (12.3%) stage II (moderate), and 100 children (7.3%) were classified as stage III (severe). After adjustment for age, sex, and underlying diagnosis, in-hospital mortality was six times more likely among patients with AKI as compared to patients with normal renal function (adjusted OR: 6.5, 95% CI: 4.2-10). AKI was also a risk factor for hypertension (adjusted OR: 4.1, 95% CI: 2.8-5.9) and prolonged stay in the PICU and hospital, as it increased the average number of admission days by 10 (95% CI: 8.6-11) days in the PICU and 12 (95% CI: 10-14) days in the hospital. CONCLUSIONS One-third of PICU admissions were complicated with AKI. AKI was associated with increased hospital mortality and the length of stay in both PICU and hospital.
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Affiliation(s)
- Jameela A Kari
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Khalid A Alhasan
- Pediatrics Department, College of Medicine, King Khalid University Hospital, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mohamed A Shalaby
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Norah Khathlan
- Intensive Care Unit, Department of Pediatrics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Osama Y Safdar
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | | | - Sherif El Desoky
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Amr S Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Kingdom of Saudi Arabia
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Al-Otaibi NG, Zeinelabdin M, Shalaby MA, Khathlan N, Mashat GD, Zahrani AA, NoorSaeed SM, Shalabi NM, Alhasan KA, Sharief SN, Albanna AS, Kari JA. Impact of acute kidney injury on long-term mortality and progression to chronic kidney disease among critically ill children. Saudi Med J 2017; 38:138-142. [PMID: 28133685 PMCID: PMC5329624 DOI: 10.15537/smj.2017.2.16012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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] [Indexed: 11/23/2022] Open
Abstract
Objectives: To determine the 2-year outcome of acute kidney injury (AKI) following admission to pediatric critical care units (PICU). Methods: A retrospective cohort study was conducted between January 2012 and December 2013. We followed 131 children admitted to PICU, King Abdulaziz University Hospital, Jeddah, Kingdom of Saudi Arabia with a diagnosis of AKI, based on pRIFLE (pediatric risk, injury, failure, loss, and end-stage renal disease), for 2 years. During the study period, 46 children died and 38 of survivors completed the follow-up. Factors affecting long-term progression to chronic kidney disease were also evaluated. Results: The 2-year mortality was more than 40%. The main determinant of the 2-year mortality was the pediatric risk of mortality (PRISM) score, which increased the risk of mortality by 6% per each one score (adjusted odds ratio, 1.06: 95% confidence interval: 1.00-1.11). By the end of the 2 years, 33% of survivors had reduction in the glomerular filtration rate and proteinuria, and 73% were hypertensive. Patients with more severe renal impairment at admission, based on the pRIFLE criteria, had higher mortality rate. This association, however, was not independent since it was influenced by baseline disease severity (PRISM score). Conclusion: Large proportion of patients admitted to PICU with AKI either died during the first 2 months of follow-up or developed long-term complications. The severity of AKI, however, was not an independent risk factor for mortality.
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Affiliation(s)
- Najlaa G Al-Otaibi
- Pediatric Nephrology Center of Excellence, Department of Pediatrics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail.
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Lipska-Ziętkiewicz BS, Gellermann J, Boyer O, Gribouval O, Ziętkiewicz S, Kari JA, Shalaby MA, Ozaltin F, Dusek J, Melk A, Bayazit AK, Massella L, Hyla-Klekot L, Habbig S, Godron A, Szczepańska M, Bieniaś B, Drożdż D, Odeh R, Jarmużek W, Zachwieja K, Trautmann A, Antignac C, Schaefer F. Low renal but high extrarenal phenotype variability in Schimke immuno-osseous dysplasia. PLoS One 2017; 12:e0180926. [PMID: 28796785 PMCID: PMC5552097 DOI: 10.1371/journal.pone.0180926] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 06/10/2017] [Indexed: 12/16/2022] Open
Abstract
Schimke immuno-osseous dysplasia (SIOD) is a rare multisystem disorder with early mortality and steroid-resistant nephrotic syndrome (SRNS) progressing to end-stage kidney disease. We hypothesized that next-generation gene panel sequencing may unsurface oligosymptomatic cases of SIOD with potentially milder disease courses. We analyzed the renal and extrarenal phenotypic spectrum and genotype-phenotype associations in 34 patients from 28 families, the largest SMARCAL1-associated nephropathy cohort to date. In 11 patients the diagnosis was made unsuspectedly through SRNS gene panel testing. Renal disease first manifested at median age 4.5 yrs, with focal segmental glmerulosclerosis or minimal change nephropathy on biopsy and rapid progression to end-stage kidney disease (ESKD) at median age 8.7 yrs. Whereas patients diagnosed by phenotype more frequently developed severe extrarenal complications (cerebral ischemic events, septicemia) and were more likely to die before age 10 years than patients identified by SRNS-gene panel screening (88 vs. 40%), the subgroups did not differ with respect to age at proteinuria onset and progression to ESKD. Also, 10 of 11 children diagnosed unsuspectedly by Next Generation Sequencing were small at diagnosis and all showed progressive growth failure. Severe phenotypes were usually associated with biallelic truncating mutations and milder phenotypes with biallelic missense mutations. However, no genotype-phenotype correlation was observed for the renal disease course. In conclusion, while short stature is a reliable clue to SIOD in children with SRNS, other systemic features are highly variable. Our findings support routine SMARCAL1 testing also in non-syndromic SRNS.
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Affiliation(s)
- Beata S. Lipska-Ziętkiewicz
- Department of Biology and Medical Genetics, Clinical Genetics Unit, Medical University of Gdansk, Gdansk, Poland
- * E-mail:
| | - Jutta Gellermann
- Department of Pediatric Nephrology, Charité Universitätsmedizin Berlin, Charité Children's Hospital, Berlin, Germany
| | - Olivia Boyer
- Inserm U1163, Imagine Institute, Paris Descartes University, Paris, France
- Pediatric Nephrology, Necker Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Olivier Gribouval
- Inserm U1163, Imagine Institute, Paris Descartes University, Paris, France
| | - Szymon Ziętkiewicz
- Department of Molecular and Cellular Biology, Intercollegiate Faculty of Biotechnology, University of Gdańsk, Gdańsk, Poland
| | - Jameela A. Kari
- Pediatric Nephrology Center of Excellence, Pediatrics Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Mohamed A. Shalaby
- Pediatric Nephrology Center of Excellence, Pediatrics Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Fatih Ozaltin
- Nephrogenetics Laboratory, Department of Pediatric Nephrology, Hacettepe University Faculty of Medicine, Ankara, Turkey
- Department of Pediatric Nephrology, Hacettepe University Faculty of Medicine, Ankara, Turkey
- Hacettepe University Center for Biobanking and Genomics, Ankara, Turkey
| | - Jiri Dusek
- Department of Pediatrics, University Hospital Motol, Prague, Czech Republic
| | - Anette Melk
- Pediatric Kidney, Liver and Metabolic Disease, MHH Children´s Hospital, Hannover, Germany
| | - Aysun K. Bayazit
- Department of Pediatric Nephrology, Cukurova University, Adana, Turkey
| | - Laura Massella
- Nephrology and Dialysis Unit, Pediatric Subspecialties Department, Bambino Gesú Children’s Hospital, IRCCS, Rome, Italy
| | - Lidia Hyla-Klekot
- Department of Pediatric Nephrology, Pediatrics and Oncology Center, Chorzów, Poland
| | - Sandra Habbig
- Department of Pediatric Nephrology, University Children's Hospital Cologne, Germany
| | - Astrid Godron
- Pediatric Nephrology Unit, Department of Pediatrics, Bordeaux University Hospital, Bordeaux, France
| | - Maria Szczepańska
- Chair and Department of Pediatrics, SMDZ in Zabrze, Medical University of Silesia in Katowice, Zabrze, Poland
| | - Beata Bieniaś
- Department of Pediatric Nephrology, Lublin Medical University, Lublin, Poland
| | - Dorota Drożdż
- Department of Pediatric Nephrology and Hypertension, Dialysis Unit, Jagiellonian University Medical College, Krakow, Poland
| | - Rasha Odeh
- Department of Pediatrics, School of Medicine, University of Jordan, Amman, Jordan
| | - Wioletta Jarmużek
- Department of Nephrology, Kidney Transplantation and Hypertension, The Children's Memorial Health Institute, Warsaw, Poland
| | - Katarzyna Zachwieja
- Department of Pediatric Nephrology and Hypertension, Dialysis Unit, Jagiellonian University Medical College, Krakow, Poland
| | - Agnes Trautmann
- Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Corinne Antignac
- Inserm U1163, Imagine Institute, Paris Descartes University, Paris, France
- Department of Genetics, Necker Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Franz Schaefer
- Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
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Sawan ZA, El-Desoky SM, Shalaby MA, Bockenhauer D, Kari JA. Facial swelling in a child on chronic hemodialysis: Questions. Pediatr Nephrol 2017; 32:1349-1350. [PMID: 27858194 DOI: 10.1007/s00467-016-3523-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Zinab A Sawan
- Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Sherif M El-Desoky
- Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Mohamed A Shalaby
- Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Detlef Bockenhauer
- Department of Paediatric Nephrology, Great Ormond Street Hospital for Children NHS Trust, London, WC1N 3JH, UK
| | - Jameela A Kari
- Department of Pediatrics, King Abdulaziz University, PO Box 80215, Jeddah, 21589, Kingdom of Saudi Arabia.
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Mosaad Z, Arafa A, Hussein HA, Shalaby MA. Mutation signature in neuraminidase gene of avian influenza H9N2/G1 in Egypt. Virusdisease 2017; 28:164-173. [PMID: 28770242 DOI: 10.1007/s13337-017-0367-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/08/2016] [Accepted: 02/18/2017] [Indexed: 10/19/2022] Open
Abstract
The low pathogenic avian influenza (LPAI) H9N2 subtype has become the most prevalent and widespread in many Asian and Middle Eastern countries. It causes an enzootic situation in commercial poultry and known as a potential facilitator virus that can be transmitted to human from birds. The neuraminidase (NA) gene plays an important role the release and spread of the virus from infected cells and throughout the bird. The complete nucleotide sequences of the NA gene of seven H9N2 viruses collected from apparent healthy chicken and quail flocks in Egypt during 2014-2015, were amplified and sequenced. The phylogenetic relationships were investigated and all viruses were belonging to the A/Q/HK/G1/97 strain (G1-like). There were no insertions or deletions or shortening in NA stalk regions when compared to Y280-lineage and the human H9N2 isolates. No obvious changes NA interactions with antiviral drugs. We found that the Egyptian H9N2 viruses have seven glycosylation sites like the most recorded H9N2 viruses in the country, except A/Q/Egypt/14864V/2014 virus which has only six. The NA has four amino acid substitutions distributed in different parts of the hemadsorbing site. The most characteristic substitutions in this site were S372A and W403R these substitutions were a distinctive feature resembling to human H9N2, H2N2 and H3N2 viruses but differs from the other avian influenza viruses. These Special features of surface glycoproteins of LPAI-H9N2 viruses refer to the tendency for enhanced introductions into humans and ensuring the importance of poultry in the transfer influenza viruses.
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Affiliation(s)
- Zienab Mosaad
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264, Dokki, Giza, 12618 Egypt
| | - Abdelsatar Arafa
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, P.O. Box 264, Dokki, Giza, 12618 Egypt
| | - Hussein A Hussein
- Virology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211 Egypt
| | - Mohamed A Shalaby
- Virology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211 Egypt
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Shalaby MA, El-Deeb A, El-Tholoth M, Hoffmann D, Czerny CP, Hufert FT, Weidmann M, Abd El Wahed A. Recombinase polymerase amplification assay for rapid detection of lumpy skin disease virus. BMC Vet Res 2016; 12:244. [PMID: 27806722 PMCID: PMC5094145 DOI: 10.1186/s12917-016-0875-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 10/28/2016] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Lumpy skin disease virus (LSDV) is a Capripoxvirus infecting cattle and Buffalos. Lumpy skin disease (LSD) leads to significant economic losses due to hide damage, reduction of milk production, mastitis, infertility and mortalities (10 %). Early detection of the virus is crucial to start appropriate outbreak control measures. Veterinarians rely on the presence of the characteristic clinical signs of LSD. Laboratory diagnostics including virus isolation, sequencing and real-time polymerase chain reaction (PCR) are performed at well-equipped laboratories. In this study, a portable, simple, and rapid recombinase polymerase amplification (RPA) assay for the detection of LSDV-genome for the use on farms was developed. RESULTS The LSDV RPA assay was performed at 42 °C and detected down to 179 DNA copies/reaction in a maximum of 15 min. Unspecific amplification was observed with neither LSDV-negative samples (n = 12) nor nucleic acid preparations from orf virus, bovine papular stomatitis virus, cowpoxvirus, Peste des petits ruminants and Blue tongue virus (serotypes 1, 6 and 8). The clinical sensitivity of the LSDV RPA assay matched 100 % (n = 22) to real-time PCR results. In addition, the LSDV RPA assay detected sheep and goat poxviruses. CONCLUSION The LSDV RPA assay is a rapid and sensitive test that could be implemented in field or at quarantine stations for the identification of LSDV infected case.
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Affiliation(s)
- Mohamed A. Shalaby
- Virology Department, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Ayman El-Deeb
- Virology Department, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
| | - Mohamed El-Tholoth
- Virology Department, Faculty of Veterinary Medicine, Mansoura University, 35516 Mansoura, Egypt
| | - Donata Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, 17493 Greifswald-Insel Riems, Germany
| | - Claus-Peter Czerny
- Division of Microbiology and Animal Hygiene, Department of Animal Sciences, Faculty of Agriculture Sciences, Georg-August-University, 37077 Goettingen, Germany
| | - Frank T. Hufert
- Institute of Microbiology & Virology, Brandenburg Medical School Fontane, 01968 Senftenberg, Germany
| | - Manfred Weidmann
- Institute of Aquaculture, University of Stirling, FK9 4LA Stirling, Scotland UK
| | - Ahmed Abd El Wahed
- Division of Microbiology and Animal Hygiene, Department of Animal Sciences, Faculty of Agriculture Sciences, Georg-August-University, 37077 Goettingen, Germany
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Yehia N, Arafa AS, Abd El Wahed A, El-Sanousi AA, Weidmann M, Shalaby MA. Development of reverse transcription recombinase polymerase amplification assay for avian influenza H5N1 HA gene detection. J Virol Methods 2015. [PMID: 26225482 DOI: 10.1016/j.jviromet.2015.07.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The 2006 outbreaks of H5N1 avian influenza in Egypt interrupted poultry production and caused staggering economic damage. In addition, H5N1 avian influenza viruses represent a significant threat to public health. Therefore, the rapid detection of H5 viruses is very important in order to control the disease. In this study, a qualitative reverse transcription recombinase polymerase amplification (RT-RPA) assay for the detection of hemagglutinin gene of H5 subtype influenza viruses was developed. The results were compared to the real-time reverse transcription polymerase chain reaction (RT-PCR). An in vitro transcribed RNA standard of 970 nucleotides of the hemagglutinin gene was developed and used to determine the assay sensitivity. The developed H5 RT-RPA assay was able to detect one RNA molecule within 7 min, while in real-time RT-PCR, at least 90 min was required. H5 RT-RPA assay did not detect nucleic acid extracted from H5 negative samples or from other pathogens producing respiratory manifestation in poultry. The clinical performance of the H5 RT-RPA assay was tested in 30 samples collected between 2014 and 2015; the sensitivity of H5 RT-RPA and real-time RT-PCR was 100%. In conclusion, H5 RT-RPA was faster than real-time RT-PCR and easily operable in a portable device. Moreover, it had an equivalent sensitivity and specificity.
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Affiliation(s)
- Nahed Yehia
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt.
| | - Abdel-Satar Arafa
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - Ahmed Abd El Wahed
- Unit of Infection Models, German Primate Center, Kellnerweg 4, 37077 Goettingen, Germany
| | - Ahmed A El-Sanousi
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Egypt
| | | | - Mohamed A Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Egypt
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Saeed HM, Alanazi MS, Shalaby MA, Alshahrani O, Ataya FS, Pathan AA, Abduljaleel ZA. Molecular cloning and cDNA characterization of Camelus dromedarius putative cytochrome P450s 1A, 2C, and 3A. Genet Mol Res 2014; 13:2886-905. [PMID: 24682982 DOI: 10.4238/2014.march.17.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The domesticated one-humped Arabian camel, Camelus dromedarius, is one of the most important animals in the Arabian Peninsula. Most of its life, this animal is exposed to both intrinsic and extrinsic genotoxic factors that are known to cause gross metabolic alterations in many organisms. This study determined the full length coding sequence of 3 cytochrome P450s cDNAs; namely, CYP450 1A1, CYP450 2C and CYP450 3A using reverse transcription polymerase chain reaction. The C. dromedarius CYP450s 1A1, 2C, and 3A have open reading frames of 1563, 1473, and 1566 bp and cDNAs that encode proteins of 520, 490, and 521 amino acid residues, respectively. The molecular weights calculated for CYP1A1, 2C, and 3A were found to be 58.651, 56.03, and 58.594 kDa, while the predicted calculated isoelectric points using a computer algorithm were 7.315, 6.579, and 9.46. The deduced amino acid sequences of these CYPs showed the membrane anchored signal peptide, the conserved proline-rich amino terminus and the characteristic heme-binding signature localized near the carboxy terminus of the protein.
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Affiliation(s)
- H M Saeed
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - M S Alanazi
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - M A Shalaby
- Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technology Applications, Alexandria, Egypt
| | - O Alshahrani
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - F S Ataya
- Department of Molecular Biology, Genetic Engineering Division, National Research Center, Dokki, Cairo, Egypt
| | - A A Pathan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Z A Abduljaleel
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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Abd El Wahed A, El-Deeb A, El-Tholoth M, Abd El Kader H, Ahmed A, Hassan S, Hoffmann B, Haas B, Shalaby MA, Hufert FT, Weidmann M. A portable reverse transcription recombinase polymerase amplification assay for rapid detection of foot-and-mouth disease virus. PLoS One 2013; 8:e71642. [PMID: 23977101 PMCID: PMC3748043 DOI: 10.1371/journal.pone.0071642] [Citation(s) in RCA: 155] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 07/02/2013] [Indexed: 11/19/2022] Open
Abstract
Foot-and-mouth disease (FMD) is a trans-boundary viral disease of livestock, which causes huge economic losses and constitutes a serious infectious threat for livestock farming worldwide. Early diagnosis of FMD helps to diminish its impact by adequate outbreak management. In this study, we describe the development of a real-time reverse transcription recombinase polymerase amplification (RT-RPA) assay for the detection of FMD virus (FMDV). The FMDV RT-RPA design targeted the 3D gene of FMDV and a 260 nt molecular RNA standard was used for assay validation. The RT-RPA assay was fast (4–10 minutes) and the analytical sensitivity was determined at 1436 RNA molecules detected by probit regression analysis. The FMDV RT-RPA assay detected RNA prepared from all seven FMDV serotypes but did not detect classical swine fever virus or swine vesicular disease virus. The FMDV RT-RPA assay was used in the field during the recent FMD outbreak in Egypt. In clinical samples, reverse transcription polymerase chain reaction (RT-PCR) and RT-RPA showed a diagnostic sensitivity of 100% and 98%, respectively. In conclusion, FMDV RT-RPA was quicker and much easier to handle in the field than real-time RT-PCR. Thus RT-RPA could be easily implemented to perform diagnostics at quarantine stations or farms for rapid spot-of-infection detection.
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Affiliation(s)
- Ahmed Abd El Wahed
- Department of Virology, University Medical Center, Goettingen, Germany
- Virology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
- * E-mail:
| | - Ayman El-Deeb
- Virology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mohamed El-Tholoth
- Virology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | | | - Abeer Ahmed
- Animal Health Research Institute, Faiyum, Egypt
| | | | - Bernd Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany
| | - Bernd Haas
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany
| | - Mohamed A. Shalaby
- Virology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Frank T. Hufert
- Department of Virology, University Medical Center, Goettingen, Germany
| | - Manfred Weidmann
- Department of Virology, University Medical Center, Goettingen, Germany
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Amer HM, Abd El Wahed A, Shalaby MA, Almajhdi FN, Hufert FT, Weidmann M. A new approach for diagnosis of bovine coronavirus using a reverse transcription recombinase polymerase amplification assay. J Virol Methods 2013; 193:337-40. [PMID: 23811231 PMCID: PMC7113639 DOI: 10.1016/j.jviromet.2013.06.027] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 06/11/2013] [Accepted: 06/19/2013] [Indexed: 11/25/2022]
Abstract
Bovine coronavirus (BCoV) is an economically significant cause of calf scours and winter dysentery of adult cattle, and may induce respiratory tract infections in cattle of all ages. Early diagnosis of BCoV helps to diminish its burden on the dairy and beef industry. Real-time RT-PCR assay for the detection of BCoV has been described, but it is relatively expensive, requires well-equipped laboratories and is not suitable for on-site screening. A novel assay, using reverse transcription recombinase polymerase amplification (RT-RPA), for the detection of BCoV is developed. The BCoV RT-RPA was rapid (10-20 min) and has an analytical sensitivity of 19 molecules. No cross-reactivity with other viruses causing bovine gastrointestinal and/or respiratory infections was observed. The assay performance on clinical samples was validated by testing 16 fecal and 14 nasal swab specimens and compared to real-time RT-PCR. Both assays provided comparable results. The RT-RPA assay was significantly more rapid than the real-time RT-PCR assay. The BCoV RT-RPA constitutes a suitable accurate, sensitive and rapid alternative to the common measures used for BCoV diagnosis. In addition, the use of a portable fluorescence reading device extends its application potential to use in the field and point-of-care diagnosis.
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Affiliation(s)
- H M Amer
- Department of Botany and Microbiology, College of Science, King Saud University, 11451 Riyadh, Saudi Arabia; Department of Virology, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
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Shalaby MA, Hamowieh AR. Safety and efficacy of Zingiber officinale roots on fertility of male diabetic rats. Food Chem Toxicol 2010; 48:2920-4. [PMID: 20667464 DOI: 10.1016/j.fct.2010.07.028] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 07/18/2010] [Accepted: 07/20/2010] [Indexed: 11/18/2022]
Abstract
The acute toxicity of methanolic and watery extracts of Zingiber officinale (ZO) roots in mice and their effects on fertility of male diabetic rats were carried out. The fertility experiment was done on six groups of male rats one of them was kept as normal control, while the others were rendered diabetic by subcutaneous injection of alloxan (120 mg kg(-1)). One group was left as diabetic control, while the others were given orally either methanolic (100 and 200 mg kg(-1)) or watery extract (150 and 300 mg kg(-1)) for 65 consecutive days. The results showed that no mortalities occur when both extracts were given orally to mice in doses up to 5 g kg(-1) b.wt. Both extracts increased fertility index, sexual organs weight, serum testosterone level and sperm motility and count. Histopathological examination of the testes of diabetic rats showed mild to moderate degenerative changes of spermatogenic cells, diffuse edema and incomplete arrest of spermatogenesis. Treatment with ZO extracts caused alleviation of the testicular lesions that appeared in non-treated diabetic rats. Conclusively, extracts of ZO have high safety in mice and intake of ZO roots as a drink may be useful for diabetic patients who suffer from sexual impotency.
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Affiliation(s)
- M A Shalaby
- Pharmacology Department, Faculty of Veterinary Medicine, Giza, PO Box 12211, Egypt.
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Abstract
The effect of alpha-tocopherol, simvastatin and both on male fertility in hypercholesterolemic rats was studied. Induction of hypercholesterolemia was done by feeding rats on a diet containing 1% cholesterol for 30 days. Hypercholesterolemic rats were orally given alpha-tocopherol (3 mg kg(-1) BW) or simvastatin (1 mg kg(-1) BW) or both for 65 days. Fertility index, serum testosterone level, sex organs weight, semen analysis and histopathological examination of testes, seminal vesicles and prostate glands were the parameters used to evaluate the reproductive efficiency of rats. In hypercholesterolemic rats (control +ve), there was a marked decrease in fertility index, testicular weight, sperm cell count, and percentages of sperm motility and viability associated with a significant increase in sperm cell abnormalities. Oral administration of either alpha-tocopherol or simvastatin to hypercholesterolemic rats for 65 days significantly improved the fertility index, testicular weight and semen quality. Concomitant administration of alpha-tocopherol and simvastatin to hypercholesterolemic rats markedly increased fertility index and sperm motility and viability associated with a significant reduction of sperm cell abnormalities. Histopathological examination revealed that testes of hypercholesterolemic rats (control +ve) had degenerated, non-functioning and atrophied seminiferous tubules associated with arrest of spermatogenesis. Oral administration of alpha-tocopherol and simvastatin concomitantly to hypercholesterolemic rats resulted in active mature and full functioning seminiferous tubules. In conclusion, concomitant administration of alpha-tocopherol and simvastatin to hypercholesterolemic male rats improved their reproductive efficiency and produced additional protection against reduced fertility induced by hypercholesterolemia.
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Affiliation(s)
- M A Shalaby
- Pharmacology Department, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
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Hussein HA, Youssef MM, Osman A, El-Ebiary EA, Shalaby MA. Immunopathogenesis of attenuated strain of chicken infectious anemia virus in one-day-old specific-pathogen-free chicks. Egypt J Immunol 2003; 10:89-102. [PMID: 15726722] [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: 05/01/2023]
Abstract
In the present study, the immunopathogenicity of chicken anemia virus (CAV) vaccinal strain was studied in one-day-old specific-pathogen-free (SPF) chicks. Hematocrit values, histopathological changes in haemopioetic and lymphoid organs, ELISA for CAV antibodies and PCR for CAV genome were used as testing assays for the study. Vaccinated chicks showed signs of anemia, lower hematocrit values and histopathological lesions in liver in the form of hepatocytes swelling to Centro lobular necrosis and apoptosis. Histopathology change in spleen (depletion of lymphocytes and apoptosis) and thymus (depletion of thymocytes and apoptosis) together with variable degrees of seroconversion rate were observed along the 10 weeks of the experiment indicating 2 waves of immune response in vaccinated chicks compared to the control non-vaccinated group. Detection of CAV-DNA in the liver of vaccinated chicks indicated the presence of the virus, when the antibody levels were decreased in some chicks. There was a consistent correlation between the 4 parameters used. It is concluded that the attenuated CAV vaccine strain induces anemia and lesions in the lymphoid organs. The histopathology and PCR are useful tools for evaluation and quality assurance of CAV vaccines.
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Affiliation(s)
- H A Hussein
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Abstract
Six cyclobutanetetraone poly(arylhydrazones) have been treated with acids and bases, and the structures of the resulting anions and cations studied by UV-Vis absorption and NMR spectroscopy. In acid media, all the hydrazones studied formed cations, which exhibited bathochromic shifts due to the extension of their resonance systems. However, in bases, only some (those which could enolize) formed anions that exhibited hypsochromic shifts; the others were unaltered.
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Affiliation(s)
- H S El Khadem
- Department of Chemistry, The American University, 4400 Massachusetts Avenue, N.W., Washington, DC 20016, USA.
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Issa RM, Shalaby MA. Eosinophilia as a diagnostic value in patients suffering from schistosomiasis haematobium comparing to eosinophiluria and egg count in the urine. J Egypt Soc Parasitol 1999; 29:431-49. [PMID: 10605495] [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] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Sixty cases ranging in age between 18-30 years old, 50 of them were suffering from schistosomiasis haematobium, they were selected from in- and out-patient clinic of Theodor Bilharz Research Institute. Patients were divided into three groups, 20 infected and not treated, 20 infected and treated then exposed again to infection and 10 were completely treated. The authors have a fourth group to serve healthy control. Blood samples were collected to count eosinophil percentage and absolute eosinophil count. Urine samples were collected to 1-study eosinophiluria by slide film staining with Leishman's stain, and 2- to count number of ova excreted in 10 ml urine by urine filtration technique. Eosinophila and eosinophiluria > 5% were considered as a diagnostic value for schistosomiasis haematobium as well as it correlation between them and intensity of infection by number of ova in urine.
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Affiliation(s)
- R M Issa
- Department of Parasitology, Research Institute of Ophthalmology, Giza, Egypt
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Abstract
The title compound, 2,5-bis(4-methylphenylsulfonyloxy-methyl)oxolane-3,4-diyl diacetate, C24H28O11S2, lies on a crystallographic twofold axis. It adopts a perfect twist 3(4)T conformation in the solid state. The puckering parameters of the tetrahydrofuran ring are q = 0.32 (8) A and rho = 92.3 (5) degrees. The acetyl groups are planar, with the non-H atoms deviating less than 0.002 (3) A from their mean plane. They have an (S)-cis conformation with the C-O and C = O bonds eclipsed, and each acetyl group is orientated with the C = O group syndiaxial to the C-H bond at the ring C atom to which the group is attached.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803, USA
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Shalaby MA, Fronczek FR, Lee Y, Younathan ES. Synthesis of 3,4-di-O-acetyl-2,5-anhydro-1,6-dideoxy-1,6-diiodo-D-mannitol. Comparison of NMR spectral results for the solid state and solution with those of the X-ray structural determination. Carbohydr Res 1995; 269:191-200. [PMID: 7780989 DOI: 10.1016/0008-6215(94)00356-k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
3,4-Di-O-acetyl-2,5-anhydro-1,6-dideoxy-1,6-diiodo-D-mannitol (3) is prepared from 2,5-anhydro-D-mannitol (1) in three steps. The solution and solid-state NMR spectra of 3 indicate considerable variation in conformation. In solution, it adopts, on average, a symmetric 4T3 conformation, whereas in the solid state it adopts an asymmetric conformation as revealed by 13C NMR cross polarization and magic angle spinning techniques. A single-crystal X-ray structure analysis confirmed the asymmetric conformation of 3 in a monoclinic crystal, space group P2(1) with a = 8.9608(4), b = 8.6348(5), c = 9.6468(4) A, beta = 96.139(4) degrees, V = 742.1(1) A3, Dc = 2.085 g cm-3, mu (MoK alpha) = 4.2 mm-1, and Z = 2. The structure was refined to R = 0.039 and Rw = 0.047 for 5181 observed reflections. The furanoid ring of 3 adopts an envelope E5 conformation slightly distorted towards 4T5, with puckering parameters psi = 313.49 degrees and q = 0.37 A. The asymmetric conformation is rationalized in terms of the weak packing forces in the crystal.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803, USA
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Shalaby MA, Fronczek FR, Younathan ES. The configuration and conformation of di-D-fructose anhydride I. The crystal and molecular structure of 3,4,3',4'-tetra-O-acetyl-6,6'-di (triphenylmethyl)-di-D-fructose anhydride I. Carbohydr Res 1994; 265:207-14. [PMID: 7842443 DOI: 10.1016/0008-6215(94)00236-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The crystal structure of 3,4,3',4'-tetra-O-acetyl- 6,6'-di(triphenylmethyl)-di-D-fructose anhydride I (1) has been determined by single-crystal X-ray diffraction. The crystals are monoclinic, space group P2(1) with a = 16.399(2), b = 9.091(2), c = 17.946(4) A, beta = 103.66(1) degrees, V = 2600(2) A3, and Z = 2. The structure was refined to R = 0.044 and Rw = 0.051 for 4403 observed reflections. The structure analysis of 1 showed that the previously assigned chemical structure of di-D-fructose anhydride I is undoubtedly alpha-D-fructofuranose beta-D-fructofuranose 1,2':2,1'-dianhydride. The conformations of the furanose rings are E5 with P = 59.8 and tau m = 43.2 degrees for D-fructose 1, and 2T3 with P = -34.39 degrees and tau m = 39.64 degrees for D-fructose 2. The two furanose fragments are linked by a 1,4-dioxane ring in a spiro arrangement. The 1,4-dioxane ring has a chair conformation with Cremer-Pople puckering parameters Q = 0.527 A, phi = 72.2 degrees and the a = 14.2 degrees.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803
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Shalaby MA, Fronczek FR, Vargas D, Younathan ES. Conformations and structure studies of sugar lactones. Part III. The composition and conformation of D-mannurono-gamma-lactone in solution, and the structural analysis of its beta anomer in the solid state. Carbohydr Res 1994; 265:197-206. [PMID: 7842442 DOI: 10.1016/0008-6215(94)00234-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Complete analyses of the proton and carbon chemical-shift assignments of D-mannurono-gamma-lactone (1) have been achieved by 1D and 2D NMR spectral measurements. At equilibrium, the anomeric alpha and beta forms were present in the ratio of 34:66 in D2O and 72:28 in Me2SO-d6. The solution data indicated that the dienvelope conformation 2E:E4 to be the favored conformation of 1 in solution. The crystal structure of 1 was determined, and it showed that the crystalline form is the beta anomer, a bicyclic structure, consisting of fused five-membered furanose and lactone rings, in agreement with an earlier deduction from chemical evidence. In contrast to the solution conformation, the furanose ring adopts a twist conformation lying between the 2(1)T and 1E conformations with phase angle (P) and pseudorotation amplitude (tau m) of -44.23 degrees and 37.9 degrees, respectively, whereas the lactone ring adopts an envelope E5 conformation slightly distorted towards 6T5 with a phase angle (P) of -22.3 degrees and a pseudorotation amplitude (tau m) of 18.4 degrees. The molecules are linked in the crystal through a hydrogen-bonding network that involves all hydroxyl groups as well as the ring oxygen atoms.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803
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Shalaby MA, Fronczek FR, Younathan ES. Conformations and structure studies of sugar lactones in the solid state. Part I. The molecular structure of L-rhamnono- and L-mannono-1,4-lactones. Carbohydr Res 1994; 264:181-90. [PMID: 7805059 DOI: 10.1016/s0008-6215(05)80004-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The crystal structures of L-rhamnono-1,4-lactone (1) and L-mannono-1,4-lactone (2) have been determined by single-crystal X-ray diffraction. Pertinent crystal data are as follows: for 1, orthorhombic, space group P2(1)2(1)2(1), a = 4.8829(2), b = 10.9088(8), c = 13.9758(9) A, V = 734.7(1) A3, Dc = 1.610 g cm-3, Z = 4, R = 0.028 and Rw = 0.035 for 1586 reflections. The lactone ring of 1 adopts an envelope conformation, E3, slightly distorted toward 2T3, with psi = 103.1(7) degrees and q = 0.38(3) A, whereas the lactone ring of 2 adopts a perfect envelope E3 conformation, with psi = 106.6(4) degrees and q = 0.42(4) A. Molecules of 1 and 2 are linked in their crystals through a three dimensional network of O-H ... H hydrogen-bonding interactions that involves all hydroxyl groups as well as the carbonyl oxygen atom.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803
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Shalaby MA, Fronczek FR, Younathan ES. Conformational features of rhamnopyranose derivatives. The molecular structure of methyl 2,3,4-tri-O-acetyl-alpha-L-rhamnopyranoside. Carbohydr Res 1994; 264:173-80. [PMID: 7805058 DOI: 10.1016/s0008-6215(05)80003-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Methyl 2,3,4-tri-O-acetyl-alpha-L-rhamnopyranoside, C13H20O8, M(r) = 304.3, is monoclinic, space group C2, with a = 23.619(1), b = 8.2168(5), c = 19.093(1) A, beta = 118.72(1) degrees, V = 3249.6(8) A3, Dc = 1.244 g cm-3, mu (MoK alpha) = 0.97 cm-1 and Z = 8. The structure was refined to R = 0.044 and Rw = 0.039 for 1969 observed reflections. There are two independent molecules in the asymmetric unit. The bond lengths and bond angles of the pyranose rings of the two are in good agreement within the limits of error. The molecules have similar conformation except for the orientation of one of the acetoxy groups. Each molecule is a normal 1C4 chair with Cremer-Pople puckering parameters Q = 0.557(6) A, theta = 174.6(2) degrees and psi = 144.6(9) degrees for molecule A and 0.564(4) A, 177.9(1) degree and 30.8(8) degrees for molecule B, respectively. The acetyl groups have the planar, (S)-cis conformation most commonly observed. They are oriented with the acetyl planes within +/- 35 degrees of the C-H bond at the ring carbon atom to which they are attached.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803
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Shalaby MA, Fronczek FR, Younathan ES, Williams GJ, Straver LH. Conformations and structure studies of sugar lactones in the solid state. Part II. The molecular structure of alpha-D-glucosaccharino-gamma-lactone: 2-C-methyl-D-ribo-pentono-1,4-lactone. Carbohydr Res 1994; 264:191-8. [PMID: 7805060 DOI: 10.1016/s0008-6215(05)80005-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The crystal structure of 2-C-methyl-D-ribo-pentono-1,4-lactone (alpha-D-glucosaccharino-gamma-lactone, 1) has been determined by single-crystal X-ray diffraction. The crystals are orthorhombic, space group P2(1)2(1)2(1) with a = 7.7429(6), b = 8.3373(7), c = 11.3258(7) A, V = 731.1(2) A3 (CuK alpha, lambda = 1.54184 A), mu = 10.82 cm-1, Dc = 1.473 g cm-3, and Z = 4. The structure was refined to R = 0.0307 and Rw = 0.0424 for 876 observed reflections. Compound 1 has the D-ribo configuration, in agreement with an earlier deduction from chemical evidence. The lactone ring adopts the 3T2 conformation, with puckering parameters psi = 279.8(9) degrees and q = 0.32(5) A. The orientation of the methyl group about the C-2-C-3 bond is gauche-trans, with the C-6-C-2-C-3-O-3 and C-6-C-2-C-3-C-4 torsion angles being -81.3(2) degrees and 154.7(1) degree, respectively. The molecules are linked in the crystal in a two-dimensional intermolecular hydrogen bonding network that involves all hydroxyl groups as well as the carbonyl oxygen atom.
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Affiliation(s)
- M A Shalaby
- Department of Biochemistry, Louisiana State University, Baton Rouge 70803
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