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Elmubarak I, Shril S, Mansour B, Bao A, Kolvenbach C, Desoky SE, Shalaby M, Kari J, Hildebrandt F, Schneider R. Recessive variants in MYO1C as a potential novel cause of proteinuric kidney disease. Res Sq 2024:rs.3.rs-4183332. [PMID: 38659911 PMCID: PMC11042399 DOI: 10.21203/rs.3.rs-4183332/v1] [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] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Background Steroid-resistant nephrotic syndrome is the second leading cause of chronic kidney disease among patients <25 years of age. Through whole exome sequencing, identification of >65 monogenic causes has rendered insights into disease mechanisms of nephrotic syndrome. Methods To elucidate novel monogenic causes of NS, we combined homozygosity mapping with ES in a worldwide cohort of 1649 pediatric patients with NS. Results We identified homozygous missense variants in MYO1C in two unrelated children with nephrotic syndrome (c.292C>T, p.R98W; c.2273 A>T, p.K758M). We evaluated publicly available kidney single-cell RNA sequencing datasets and found MYO1Cto be predominantly expressed in podocytes. We then performed structural modeling in molecular viewer PyMol using the super function aligning shared regions within both partial structures of MYO1C (4byf and 4r8g). In both structures, calmodulin, a common regulator of myosin activity, is shown to bind to the IQ motif. At both residue sites (K758; R98), there are ion-ion interactions stabilizing intradomain and ligand interactions: R98 binds to nearby D220 within the Myosin Motor Domain and K758 binds to E14 on a calmodulin molecule. Variants of these charged residues to non-charged amino acids could ablate these ionic interactions, weakening protein structure and function establishing the impact of these variants. Conclusion We here identified recessive variants in MYO1C as a potential novel cause of nephrotic syndrome in children.
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Affiliation(s)
| | - Shirlee Shril
- Boston Childrens Hospital: Boston Children's Hospital
| | | | - Aaron Bao
- Boston Childrens Hospital: Boston Children's Hospital
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Buerger F, Salmanullah D, Liang L, Gauntner V, Krueger K, Qi M, Sharma V, Rubin A, Ball D, Lemberg K, Saida K, Merz LM, Sever S, Issac B, Sun L, Guerrero-Castillo S, Gomez AC, McNulty MT, Sampson MG, Al-Hamed MH, Saleh MM, Shalaby M, Kari J, Fawcett JP, Hildebrandt F, Majmundar AJ. Recessive variants in the intergenic NOS1AP-C1orf226 locus cause monogenic kidney disease responsive to anti-proteinuric treatment. medRxiv 2024:2024.03.17.24303374. [PMID: 38562757 PMCID: PMC10984069 DOI: 10.1101/2024.03.17.24303374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
In genetic disease, an accurate expression landscape of disease genes and faithful animal models will enable precise genetic diagnoses and therapeutic discoveries, respectively. We previously discovered that variants in NOS1AP , encoding nitric oxide synthase 1 (NOS1) adaptor protein, cause monogenic nephrotic syndrome (NS). Here, we determined that an intergenic splice product of N OS1AP / Nos1ap and neighboring C1orf226/Gm7694 , which precludes NOS1 binding, is the predominant isoform in mammalian kidney transcriptional and proteomic data. Gm7694 -/- mice, whose allele exclusively disrupts the intergenic product, developed NS phenotypes. In two human NS subjects, we identified causative NOS1AP splice variants, including one predicted to abrogate intergenic splicing but initially misclassified as benign based on the canonical transcript. Finally, by modifying genetic background, we generated a faithful mouse model of NOS1AP -associated NS, which responded to anti-proteinuric treatment. This study highlights the importance of intergenic splicing and a potential treatment avenue in a mendelian disorder.
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Reddy SM, Gray H, Barry T, Bessell B, Shalaby M, Woodward M, Awad K. Efficacy of Biofeedback in Paediatric Urology Patients: A Single Centre Experience. J Pediatr Surg 2024; 59:295-298. [PMID: 37989606 DOI: 10.1016/j.jpedsurg.2023.10.033] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 10/11/2023] [Indexed: 11/23/2023]
Abstract
AIM OF THE STUDY Biofeedback assisted pelvic floor muscle training is an underutilised nonpharmacological treatment in paediatric urology. We reviewed all patients who underwent a course of treatment at our centre to evaluate its efficacy. METHODS All patients who underwent a full cycle of biofeedback in the paediatric urology department from 2016 to 2023 were identified. Demographics and outcomes following treatment were accessed. RESULTS 42 patients (28 female) were identified who underwent 8 one-hour sessions on a weekly basis constituted a completed cycle of treatment. Patients were identified for treatment as per local lower urinary tract symptom guidelines and following discussion in a fortnightly urology MDT and including diagnoses of overactive bladder, dysfunctional voiding, and giggle incontinence. Outcomes were measured as successful 29% (continence, normal postvoid residuals, clean intermittent catherization discontinued), partially successful 19% (reduced wetting, abnormal post void residuals, ongoing CIC) and unsuccessful 52% (no change for patient). Age at time of treatment affected likelihood of success: <9 years, 0% success; ≥9 years, 57% [p < 0.05]. There was no significant difference in success for 9-11 years [60%] vs >11 years [56%]. CONCLUSIONS Biofeedback has shown success with improvement in symptoms in 48% of patients (complete or partial), which increases to 57% success in ≥9 years group. We would advocate its use in these difficult to manage patients with LUTS.
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Affiliation(s)
| | - Harriet Gray
- University Hospitals Bristol and Weston NHS Foundation Trust, UK
| | - Tammy Barry
- University Hospitals Bristol and Weston NHS Foundation Trust, UK
| | - Bridie Bessell
- University Hospitals Bristol and Weston NHS Foundation Trust, UK
| | - Mohamed Shalaby
- University Hospitals Bristol and Weston NHS Foundation Trust, UK
| | - Mark Woodward
- University Hospitals Bristol and Weston NHS Foundation Trust, UK
| | - Karim Awad
- University Hospitals Bristol and Weston NHS Foundation Trust, UK; Ain Sham University Hospital, Cairo, Egypt.
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4
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Youssef ASED, Zekri ARN, Mohanad M, Loutfy SA, Abdel Fattah NF, Elberry MH, El Leithy AA, El-Touny A, Rabie AS, Shalaby M, Hanafy A, Lotfy MM, El-Sisi ER, El-Sayyad GS, Nassar A. Deleterious and ethnic-related BRCA1/2 mutations in tissue and blood of Egyptian colorectal cancer patients and its correlation with human papillomavirus. Clin Exp Med 2023; 23:5063-5088. [PMID: 37804357 PMCID: PMC10725364 DOI: 10.1007/s10238-023-01207-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] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/22/2023] [Indexed: 10/09/2023]
Abstract
This study aimed to identify BRCA1/2 mutational patterns in the tissue and blood of Egyptian colorectal cancer (CRC) patients and to study the possible correlation of this mutational pattern with Human papillomavirus (HPV) infection. Eighty-two colonoscopic biopsies and forty-six blood samples were collected from Egyptian CRC patients, as well as blood samples of age and sex-matched healthy controls (n = 43) were enrolled. The libraries were performed using Qiaseq Human BRCA1 and BRCA2 targeted DNA panel and sequenced via Ion proton sequencer. Also, the CRC tissues were subjected to conventional PCR targeting the HPV Late 1 (L1) region. Our analysis revealed that the BRCA-DNA damage pathway had been altered in more than 65% of the CRC patients. Comparing tissue and blood samples from CRC patients, 25 somatic mutations were found exclusively in tissue, while 41 germline mutations were found exclusively in blood. Additionally, we identified 23 shared BRCA1/2 pathogenic (PVs) mutations in both blood and tissue samples, with a significantly higher frequency in blood samples compared to tissue samples. The most affected exon in BRCA1 was exon 10, while the most affected exons in BRCA2 were 11, 14, 18, 24, and 27 exons. Notably, we revealed an ethnic-related cluster of polymorphism variants in our population closely related to South Asian and African ethnicities. Novel PVs were identified and submitted to the ClinVar database. HPV was found in 23.8% of the CRC tissues, and 54% of HPV-positive cases had somatic BRCA1/2 PVs. The results of this research point to a possible connection between infection with HPV and BRCA1/2 mutations in the occurrence of colorectal cancer in the Egyptian population, which has a mixed ethnic background. Our data also indicate that liquid biopsy (blood samples) may be more representative than tissue samples for detecting BRCA1/2 mutations. These findings may have implications for cancer screening and the development of personalized, targeted therapies, such as PARP inhibitors, which can effectively target BRCA1/2 mutations.
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Affiliation(s)
- Amira Salah El-Din Youssef
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt.
| | - Abdel Rahman N Zekri
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Marwa Mohanad
- Department of Biochemistry, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology, Giza, Egypt
| | - Samah A Loutfy
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
- Nanotechnology Research Center (NTRC), The British University in Egypt (BUE), El-Shorouk City, Suez Desert Road, P. O. Box 43, Cairo, Egypt
| | - Nasra F Abdel Fattah
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mostafa H Elberry
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Asmaa A El Leithy
- Department of Medical Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza, Egypt
| | - Ahmed El-Touny
- Surgical Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ahmed Samy Rabie
- Surgical Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mohamed Shalaby
- Surgical Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ayman Hanafy
- Surgical Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mai M Lotfy
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Enas R El-Sisi
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Gharieb S El-Sayyad
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt.
- Department of Microbiology and Immunology, Faculty of Pharmacy, Galala University, New Galala City, Suez, Egypt.
- Drug Microbiology Lab., Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
| | - Auhood Nassar
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
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Alsaggaf A, Owiwi Y, Shalaby M, Ghallab A, Zidan M, Alawi A, Bustangi N, Awad M, Bana A, Al Zeair S, Afandi A, Basyouni A, Al Nasser I, Raml E, Raboei E. Non-operative treatment for simple acute appendicitis (NOTA) in children during the COVID-19 era: new lessons from the pandemic. Sci Rep 2023; 13:18766. [PMID: 37907760 PMCID: PMC10618159 DOI: 10.1038/s41598-023-46172-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 10/28/2023] [Indexed: 11/02/2023] Open
Abstract
Coronavirus (COVID-19) was a pandemic disease that was affecting our medical and surgical daily practice badly. The surgical management of acute appendicitis was the gold standard, but new studies suggest the safety of antibiotic treatment alone. Non-operative treatment for simple acute appendicitis (NOTA) avoids surgery, the risks of general anesthesia, and long hospital stays. It also decreases the risk of exposure to coronavirus. We aimed to study the cost-effectiveness and outcome of NOTA during the COVID-19 pandemic and compared it to single-incision pediatric endo-surgery appendectomy (SIPESA). A prospective cohort study for NOTA of patients from 6 to 12 years old in the COVID-19 pandemic period from April 1st, 2020, to April 30th, 2021, patients were divided into two groups: Group S was managed by SIPESA, and Group N was managed by NOTA. Family education and assurance with detailed explanation were done for early detection of any complications, and we continue monitoring the patients until their complete recovery. Group S had 24 cases (40%), mean age 9.3 years. Group N had 36 cases (60%), mean age 9.1 years. Six cases (17%) in group N were converted to surgical management in the first 6 months of the study. The mean cost dropped from $2736/day to $400/day. The mean psychological stress for the children improved from 4.4 in April to 2 in September. The mean follow-up was 3.5 months. NOTA is a feasible, cost-effective approach, and we recommend it, as we have learned this lesson during the COVID-19 pandemic days.
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Affiliation(s)
- Ameen Alsaggaf
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Yazeed Owiwi
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Mohamed Shalaby
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia.
- Pediatric Surgery Unit, Faculty of Medicine, Tanta University, Tanta, Egypt.
| | - Alaa Ghallab
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Mazen Zidan
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Ahmed Alawi
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Nasir Bustangi
- Division of Pediatric Surgery, Department of Surgery, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammed Awad
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
- Pediatric Surgery Unit, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Abdulelah Bana
- Radiology Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Saad Al Zeair
- Radiology Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Ahmed Afandi
- Surgical Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Ahmed Basyouni
- Surgical Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Ibrahim Al Nasser
- Radiology Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Enas Raml
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
| | - Enaam Raboei
- Pediatric Surgery Department, King Fahd Armed Forces Hospital (KFAFH), Jeddah, Saudi Arabia
- Medical Reference Center, Jeddah, Saudi Arabia
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6
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Kandil M, El-Medany W, Shalaby M, El- Habal N. Comparative Efficacy of Uphold and Closer Insecticide on the Developmental, Reproductive, Biochimical and Histological of the Spiny Bollworm, Earias insulana (Boisd.). Egyptian Academic Journal of Biological Sciences, F Toxicology & Pest Control 2023. [DOI: 10.21608/eajbsf.2023.281283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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7
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Ismail MS, Kassem L, Ali AAH, Ahmed FE, Shalaby M, Magdy S. Molecular patterns of egyptian patients with non-squamous non-small-cell lung cancers: a clinicopathological study. J Egypt Natl Canc Inst 2023; 35:7. [PMID: 37009936 DOI: 10.1186/s43046-023-00167-2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/16/2023] [Indexed: 04/04/2023] Open
Abstract
BACKGROUND Driver molecular aberrations, such as epidermal growth factor receptor (EGFR) mutation and anaplastic lymphoma kinase (ALK) gene rearrangement, play an important role in the oncogenesis and progression of non-squamous non-small-cell lung cancers (NSCLC). Therefore, this study aimed to detect the incidence of driver mutations among non-squamous NSCLC. PATIENTS AND METHODS This was a retrospective-prospective cohort study on 131 patients with non-squamous NSCLC. Data on age, smoking status, chest symptoms, method of lung cancer diagnosis, molecular testing, including EGFR mutations in formalin-fixed paraffin-embedded (FFPE) tumor tissue and serum circulating tumor DNA using next-generation sequencing and ALK gene rearrangement by FFPE tumor tissue, and follow-up data regarding treatment modalities and outcomes were collected. RESULTS The median age of the patients was 57 years (range: 32-79 years). Out of 131 patients, 97 were males (74%), and 90 (68.7%) were smokers. Among 128 patients tested, 16 (12.5%) had EGFR mutations detected with either technique by formalin-fixed paraffin-embedded (FFPE) tumor tissue or/and serum circulating tumor DNA using next-generation sequencing, and 6 (4.7%) had ALK rearrangement by FFPE tumor tissue. The majority (62.6%) presented with metastatic disease. Among the 102 patients who received first-line systemic therapy, the objective response rate was 50.0% in mutated NSCLC versus 14.6% in non-mutated (p < 0.001). Among the eight mutated patients who received first-line tyrosine kinase inhibitors (TKIs), 7 patients achieved either complete response or partial response. Among the 22 mutated patients, the median overall survival was 3 months in those who did not receive targeted therapy versus not reached in those who received any type of targeted therapy (p < 0.001). CONCLUSION Screening patients with newly diagnosed non-squamous NSCLC for driver mutations is essential for major prognostic and therapeutic implications. Early administration of TKIs in mutated patients significantly improves disease outcomes.
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Affiliation(s)
- Mohamed Said Ismail
- Department of Chest Diseases, Faculty of Medicine, Cairo University, Kasr Al-Ainy Hospital, Cairo, Egypt
| | - Loay Kassem
- Clinical Oncology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Ahmed Al-Husseiny Ali
- Department of Chest Diseases, Faculty of Medicine, Cairo University, Kasr Al-Ainy Hospital, Cairo, Egypt
| | - Fatma Elzahraa Ahmed
- Department of Chest Diseases, Faculty of Medicine, Cairo University, Kasr Al-Ainy Hospital, Cairo, Egypt.
| | - Mohamed Shalaby
- Surgical Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Sally Magdy
- Department of Chest Diseases, Faculty of Medicine, Cairo University, Kasr Al-Ainy Hospital, Cairo, Egypt
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Shalaby M, Abdеlaziz RR, Ghoneim HA, Suddеk GM. Imatinib mitigates experimentally-induced ulcerative colitis: Possible contribution of NF-kB/JAK2/STAT3/COX2 signaling pathway. Life Sci 2023; 321:121596. [PMID: 36940909 DOI: 10.1016/j.lfs.2023.121596] [Citation(s) in RCA: 1] [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: 02/01/2023] [Revised: 03/06/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023]
Abstract
RATIONALE Ulcerative colitis (UC) is a chronic immune-mediated disease characterized by recurrent inflammation, damage, and alteration of the large intestine's mucosal and submucosal surfaces. The purpose of this research was to evaluate the impact of tyrosine kinase inhibitor (imatinib) on experimentally induced UC in rats via acetic acid (AA). METHODS Male rats were randomly assigned to four groups: control, AA, AA + imatinib (10 mg/kg), and AA + imatinib (20 mg/kg). Imatinib (10 and 20 mg/kg/day) was orally supplied by oral syringe for one week before induction of UC. On the eighth day, Rats received enemas containing a 4 % solution of acetic acid to induce colitis. One day after inducing colitis, rats were euthanized and their colons were subjected to morphological, biochemical, histological, and immunohistochemical analysis. RESULTS Imatinib pretreatment significantly decreased macroscopic and histological damage scores, decreased disease activity index as well as colon mass index. In addition, imatinib successfully lowered the levels of malondialdehyde (MDA) in colonic tissues and enhanced superoxide dismutase activity (SOD) and glutathione content (GSH). Imatinib also reduced colonic levels of inflammatory interleukins (IL-23, IL-17, IL-6), JAK2 and STAT3. Furthermore, imatinib suppressed nuclear transcription factor kappa B (NF-kB/p65) level, and COX2 expression in colonic tissues. SIGNIFICANCE Imatinib may be a viable therapy option for UC as it halts the interaction network of NF-kB/JAK2/STAT3/COX2 signaling pathway.
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Affiliation(s)
- Mohamed Shalaby
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
| | - Rania R Abdеlaziz
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt.
| | - Hamdy A Ghoneim
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
| | - Ghada M Suddеk
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
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Adly M, Shalaby M, Zedan MH, Elsabeeny WY. Evaluating intraoperative norepinephrine versus fresh frozen plasma in patients undergoing cytoreductive surgery and HIPEC to reduce renal insult. Egyptian Journal of Anaesthesia 2022. [DOI: 10.1080/11101849.2022.2109357] [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: 10/15/2022] Open
Affiliation(s)
- Mohamed Adly
- Anaesthesia and Pain Management, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mohamed Shalaby
- Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mohamed H Zedan
- Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Walaa Y Elsabeeny
- Anaesthesia and Pain Management, National Cancer Institute, Cairo University, Cairo, Egypt
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Ovchinnikov AV, Chefonov OV, Agranat MB, Shalaby M, Sitnikov DS. Terahertz generation optimization in an OH1 nonlinear organic crystal pumped by a Cr:forsterite laser. Opt Lett 2022; 47:5505-5508. [PMID: 37219255 DOI: 10.1364/ol.475960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 09/30/2022] [Indexed: 05/24/2023]
Abstract
We present the results of experimental investigations of terahertz radiation generation conversion efficiency in an OH1 nonlinear organic crystal pumped by femtosecond laser pulses at 1240 nm wavelength. An influence of OH1 crystal thickness on the terahertz generation by optical rectification method was studied. It is shown that the optimal crystal thickness for the maximum conversion efficiency is 1 mm, which agrees with the previously made theoretical estimates.
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Shalaby M, Abd Al Hamid K. PO.8.183 Sle female patient presented with fatal cytophagic histiocytic panniculitis. Friday 07 October 2022 from 13:00 to 14:10 2022. [DOI: 10.1136/lupus-2022-elm2022.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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12
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Moussa AH, Shalaby M, Sedik EWS, Kamal MTED, Talaat H. Molecular Dynamic Investigation of HN2ON a Potential Energy Surface Designed by Lie Algebra Method. Russ J Phys Chem B 2022. [DOI: 10.1134/s1990793122040133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Shalaby A, Abd-El Rahman T, Shalaby M. Study of Imidacloprid, Azoxystrobin and Difenoconazole Residues and their Biochemical effects on Cucumber. Journal of Plant Protection and Pathology 2022; 13:161-167. [DOI: 10.21608/jppp.2022.148665.1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Shalaby M, Sayed A, Awad AK, Moustafa K, Okasha O, Hariri E, Abdelfattah OM. Omecamtiv mecarbil in heart failure with reduced ejection fraction: systematic review and meta-analysis. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Heart failure (HF) is a growing public health challenge worldwide, with high rates of mortality and morbidity. Omecamtiv Mecarbil (OM) is a cardiac myosin activator and the first of a novel class of myotropes, agents that directly improve myocardial function by selectively improving cardiac sarcomere function. Data on its effect on cardiovascular outcomes remains scarce.
Objectives
To evaluate the safety and efficacy of Omecamtiv Mecarbil in Heart Failure with Reduced Ejection Fraction (HFrEF) and its effect on mid-term clinical outcomes.
Methods
We systematically searched MEDLINE/Pubmed, CENTRAL, clinicaltrials.gov, and the International Clinical Trials Registry Platform for randomized clinical trials (RCTs) evaluating OM safety and efficacy in HFrEF. Outcomes of interest included all-cause mortality, cerebrovascular events, hospitalization, myocardial infarction (MI), anginal events, atrial fibrillation (AF) or flutter, and hypotension. Data screening and extraction was performed by two independent reviewers. We used a random-effects model using the Dersimonian-Laird and Mantel-Haenszel methods to calculate the risk ratio (RR) with 95% confidence intervals.
Results
A total of 232 records were identified, of which six RCTs (N = 9,547; Omecamtiv: 4,889; Placebo: 4,658) met inclusion criteria. The average age was 64.4 years (standard deviation (SD): 0.82), and 79.0% (N = 7,538) were males. The weighted follow-up duration was 19.4 months. OM was associated with a significant reduction in the incidence of cerebrovascular events (RR: 0.68; 95% CI: 0.51 to 0.91). Moreover, OM was associated with a significant increase in the risk of hypotension (RR: 1.45; 95% CI: 1.03 to 2.02), compared to placebo when utilized as an adjuvant therapy to HF guideline-directed medical therapy (GDMT). No statistically significant difference was noted with all-cause mortality (RR: 1.00; 95% CI: 0.93 to 1.07), hospitalization (RR: 0.96; 95% CI: 0.90 to 1.03), incidence of atrial fibrillation or flutter (RR: 0.79; 95% CI: 0.61 to 1.02), anginal events (RR: 1.32; 95% CI: 0.92 to 1.88) or myocardial infarction (RR: 1.07; 95% CI: 0.84 to 1.36). Heterogeneity was low (I2 = 0%) in all analyses.
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Affiliation(s)
| | - A Sayed
- Ain Shams University, Cairo, Egypt
| | - AK Awad
- Ain Shams University, Cairo, Egypt
| | - K Moustafa
- Alexandria University, Department of Medicine, Alexandria, Egypt
| | - O Okasha
- University of Missouri, Department of Medicine, Kansas City, United States of America
| | - E Hariri
- Cleveland Clinic Foundation, Department of Medicine, Cleveland, United States of America
| | - OM Abdelfattah
- Morristown Medical Center, Morristown, United States of America
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Lane BM, Chryst-Stangl M, Wu G, Shalaby M, El Desoky S, Middleton CC, Huggins K, Sood A, Ochoa A, Malone AF, Vancini R, Miller SE, Hall G, Kim SY, Howell DN, Kari JA, Gbadegesin R. Steroid-sensitive nephrotic syndrome candidate gene CLVS1 regulates podocyte oxidative stress and endocytosis. JCI Insight 2022; 7:e152102. [PMID: 34874915 PMCID: PMC9018043 DOI: 10.1172/jci.insight.152102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 12/01/2021] [Indexed: 11/17/2022] Open
Abstract
We performed next-generation sequencing in patients with familial steroid-sensitive nephrotic syndrome (SSNS) and identified a homozygous segregating variant (p.H310Y) in the gene encoding clavesin-1 (CLVS1) in a consanguineous family with 3 affected individuals. Knockdown of the clavesin gene in zebrafish (clvs2) produced edema phenotypes due to disruption of podocyte structure and loss of glomerular filtration barrier integrity that could be rescued by WT CLVS1 but not the p.H310Y variant. Analysis of cultured human podocytes with CRISPR/Cas9-mediated CLVS1 knockout or homozygous H310Y knockin revealed deficits in clathrin-mediated endocytosis and increased susceptibility to apoptosis that could be rescued with corticosteroid treatment, mimicking the steroid responsiveness observed in patients with SSNS. The p.H310Y variant also disrupted binding of clavesin-1 to α-tocopherol transfer protein, resulting in increased reactive oxygen species (ROS) accumulation in CLVS1-deficient podocytes. Treatment of CLVS1-knockout or homozygous H310Y-knockin podocytes with pharmacological ROS inhibitors restored viability to control levels. Taken together, these data identify CLVS1 as a candidate gene for SSNS, provide insight into therapeutic effects of corticosteroids on podocyte cellular dynamics, and add to the growing evidence of the importance of endocytosis and oxidative stress regulation to podocyte function.
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Affiliation(s)
- Brandon M. Lane
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Megan Chryst-Stangl
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Guanghong Wu
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Mohamed Shalaby
- Pediatric Department, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sherif El Desoky
- Pediatric Department, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Claire C. Middleton
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Kinsie Huggins
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Amika Sood
- Department of Biostatistics and Bioinformatics and Duke Center for Statistical Genetics and Genomics, Duke University, Durham, North Carolina, USA
| | - Alejandro Ochoa
- Department of Biostatistics and Bioinformatics and Duke Center for Statistical Genetics and Genomics, Duke University, Durham, North Carolina, USA
| | - Andrew F. Malone
- Department of Medicine, Division of Nephrology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | | | | | - Gentzon Hall
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine, Division of Nephrology; and
| | - So Young Kim
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA
| | | | - Jameela A. Kari
- Pediatric Department, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rasheed Gbadegesin
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine, Division of Nephrology; and
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Abdelsameea Ibrahim G, Soliman Nasr A, Atta F, Reda M, Abdelghany H, El-Demiry NM, Shalaby M. The Assessment of Intrapartum Transperineal Ultrasonographic Parameters for their Effectiveness in Evaluation of Progress of Labor and Prediction of Mode of Delivery in Egyptian Women. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.7049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction: High fetal head station has been associated with prolonged labor and delivery outcomes. Although clinical assessment of fetal head station is both subjective and unreliable, women with prolonged labor are subjected to multiple digital vaginal examinations. The use of ultrasound has been proposed to aid in the management of labor since 1990s. Ultrasound examination is more accurate and reproducible than clinical examination in the diagnosis of fetal head station and in the prediction of arrest of labor. Ultrasound examination can, to some extent, distinguish those women destined for spontaneous vaginal delivery and those destined for operative delivery and may predict the outcome of instrumental vaginal delivery. Such a technique has the potential to reduce the frequency of intrusive internal examinations and associated infection and could be useful in allowing the assessment of women in whom digital VE is traumatic or contra-indicated. Intrapartum ultrasound not only provides objective and quantitative data in labor, but also helps to make more reliable clinical decisions aiming to improve obstetric outcomes of both the mother and fetus as a supplementary tool for active management.
Aim of the work: This study aims at assessing the value of intrapartum transperineal ultrasonography as a quantitative and objective tool in the evaluation of progress of labor and prediction of mode of delivery.
Subjects: This study was a prospective observational study conducted on 600 primiparous women in active first stage of labor admitted to Kasr Al Ainy maternity hospital from January 2017 to June 2018. The studied population was divided into two groups. Group A of 300 women with normal progress of labor and group B of 300 women with prolonged 1st stage of labor.
Methods: Fetal head station(FHS) was assessed clinically by digital vaginal examination (dVE) and sonographically by transperineal ultrasound measurement of head perineal distance (HPD) and angle of progression (AOP). Intrapartum care of the patient continued as normal based only on digital vaginal examinations using the modified WHO partogram. (1). Statistical analysis was targeted towards assessing the potential of the intrapartum ultrasonography in the evaluation of progress of labor and prediction of mode of delivery.
Results: All studied parameters for assessment of FHS (dVE, HPD, and AOP) significantly corelated with each other and with both progress of labor and mode of delivery with P value (<0.001). The highest sensitivity for prediction of progress of labor is observed using dVE (83%), the highest specificity is observed using AOP (78.3%). The highest sensitivity for prediction mode of delivery is for combined HPD & AOP (97.7%) while the highest specificity is for AOP (81%). When combining both HPD and AOP for prediction of mode of delivery, the assessment of both parameters was found to have a high sensitivity of 97.7% and a high positive predictive value of 86.63%.
Conclusion: Intrapartum ultrasound examination is a valuable tool in the prediction of progress of labor and mode of delivery. The assessment of fetal head station by transperineal ultrasound measurement of HPD and AOP is much more informative of the progress of labor and the mode of delivery than digital assessment of fetal head station.
Keywords: Labor, intrapartum ultrasound, Angle of progression, Head perineal distance, fetal head station, digital vaginal examination.
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Shalaby A, Oriby A, Abdel Rahman T, Shalaby M. Environmental Influences on the Stability of two Chlorpyrifos Formulations, with a Focus on Sulfotep Content. Egypt J Chem 2021. [DOI: 10.21608/ejchem.2021.90151.4307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Yehia N, Eldemery F, Arafa AS, Abd El Wahed A, El Sanousi A, Weidmann M, Shalaby M. Reverse Transcription Recombinase Polymerase Amplification Assay for Rapid Detection of Avian Influenza Virus H9N2 HA Gene. Vet Sci 2021; 8:vetsci8070134. [PMID: 34357927 PMCID: PMC8310249 DOI: 10.3390/vetsci8070134] [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: 05/14/2021] [Revised: 07/11/2021] [Accepted: 07/13/2021] [Indexed: 11/16/2022] Open
Abstract
The H9N2 subtype of avian influenza A virus (aIAV) is circulating among birds worldwide, leading to severe economic losses. H9N2 cocirculation with other highly pathogenic aIAVs has the potential to contribute to the rise of new strains with pandemic potential. Therefore, rapid detection of H9 aIAVs infection is crucial to control virus spread. A qualitative reverse transcription recombinase polymerase amplification (RT-RPA) assay for the detection of aIAV subtype H9N2 was developed. All results were compared to the gold standard (real-time reverse transcription polymerase chain reaction (RT-PCR)). The RT-RPA assay was designed to detect the hemagglutinin (HA) gene of H9N2 by testing three pairs of primers and a probe. A serial concentration between 106 and 100 EID50 (50% embryo infective dose)/mL was applied to calculate the analytical sensitivity. The H9 RT-RPA assay was highly sensitive as the lowest concentration point of a standard range at one EID50/mL was detected after 5 to 8 min. The H9N2 RT-RPA assay was highly specific as nucleic acid extracted from H9 negative samples and from other avian pathogens were not cross detected. The diagnostic sensitivity when testing clinical samples was 100% for RT-RPA and RT-PCR. In conclusion, H9N2 RT-RPA is a rapid sensitive and specific assay that easily operable in a portable device for field diagnosis of aIAV H9N2.
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Affiliation(s)
- Nahed Yehia
- National Laboratory for Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center, Dokki, Giza 12618, Egypt; (N.Y.); (A.-S.A.)
| | - Fatma Eldemery
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Abdel-Satar Arafa
- National Laboratory for Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center, Dokki, Giza 12618, Egypt; (N.Y.); (A.-S.A.)
| | - Ahmed Abd El Wahed
- Division of Microbiology and Animal Hygiene, Faculty of Agricultural Sciences, University of Goettingen, 7077 Goettingen, Germany
- Institute of Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, 04103 Leipzig, Germany
- Correspondence: or ; Tel.: +49-176-613-603-25
| | - Ahmed El Sanousi
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt; (A.E.S.); (M.S.)
| | - Manfred Weidmann
- Institute of Microbiology & Virology, Brandenburg Medical School, 01968 Senftenberg, Germany;
| | - Mohamed Shalaby
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt; (A.E.S.); (M.S.)
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19
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Elzaher MFA, Shalaby M. Two-level chaotic system versus non-autonomous modulation in the context of chaotic voice encryption. 2021 International Telecommunications Conference (ITC-Egypt) 2021. [DOI: 10.1109/itc-egypt52936.2021.9513947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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20
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Abstract
Megaprepuce (MP) is a rare and challenging condition characterised by an excessive inner prepuce, paucity of penile skin and an extremely narrow phimotic ring. The aetiological factors leading to its development are poorly understood. A variety of surgical techniques have been described in the last 26 years mostly with small number of patients and short follow-up. It is also highly likely that some series have in the past included different variants of inconspicuous penis combining concealed penis, MP and webbed penis. This article is a systematic review of the literature on Megaprepuce; in particular the embryology, history, aetiology, and the surgical techniques available for the correction of this unique penile anomaly will be presented and discussed in this study.
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Affiliation(s)
- Mohamed Shalaby
- Department of Paediatric Surgery, Bristol Royal Hospital for Children, Bristol, BS2 8BJ, UK.
| | - Salvatore Cascio
- University College Dublin, Children's Health Ireland at Temple Street, Dublin, Ireland
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21
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Klämbt V, Werth M, Onuchic-Whitford AC, Getwan M, Kitzler TM, Buerger F, Mao Y, Deutsch K, Mann N, Majmundar AJ, Kaminski MM, Shen T, Schmidt-Ott KM, Shalaby M, El Desoky S, Kari JA, Shril S, Lienkamp SS, Barasch J, Hildebrandt F. Mutations in transcription factor CP2-like 1 may cause a novel syndrome with distal renal tubulopathy in humans. Nephrol Dial Transplant 2021; 36:237-246. [PMID: 33097957 DOI: 10.1093/ndt/gfaa215] [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: 03/02/2020] [Accepted: 06/18/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND An underlying monogenic cause of early-onset chronic kidney disease (CKD) can be detected in ∼20% of individuals. For many etiologies of CKD manifesting before 25 years of age, >200 monogenic causative genes have been identified to date, leading to the elucidation of mechanisms of renal pathogenesis. METHODS In 51 families with echogenic kidneys and CKD, we performed whole-exome sequencing to identify novel monogenic causes of CKD. RESULTS We discovered a homozygous truncating mutation in the transcription factor gene transcription factor CP2-like 1 (TFCP2L1) in an Arabic patient of consanguineous descent. The patient developed CKD by the age of 2 months and had episodes of severe hypochloremic, hyponatremic and hypokalemic alkalosis, seizures, developmental delay and hypotonia together with cataracts. We found that TFCP2L1 was localized throughout kidney development particularly in the distal nephron. Interestingly, TFCP2L1 induced the growth and development of renal tubules from rat mesenchymal cells. Conversely, the deletion of TFCP2L1 in mice was previously shown to lead to reduced expression of renal cell markers including ion transporters and cell identity proteins expressed in different segments of the distal nephron. TFCP2L1 localized to the nucleus in HEK293T cells only upon coexpression with its paralog upstream-binding protein 1 (UBP1). A TFCP2L1 mutant complementary DNA (cDNA) clone that represented the patient's mutation failed to form homo- and heterodimers with UBP1, an essential step for its transcriptional activity. CONCLUSION Here, we identified a loss-of-function TFCP2L1 mutation as a potential novel cause of CKD in childhood accompanied by a salt-losing tubulopathy.
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Affiliation(s)
- Verena Klämbt
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Max Werth
- Division of Nephrology, Columbia University, New York, NY, USA
| | - Ana C Onuchic-Whitford
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Maike Getwan
- Department of Medicine, Renal Division, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thomas M Kitzler
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Florian Buerger
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Youying Mao
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Konstantin Deutsch
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Nina Mann
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Amar J Majmundar
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael M Kaminski
- Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Department of Nephrology and Medical Intensive Care, Charité - Universitaetsmedizin Berlin, Germany
| | - Tian Shen
- Division of Nephrology, Columbia University, New York, NY, USA
| | - Kai M Schmidt-Ott
- Department of Nephrology and Medical Intensive Care, Charité - Universitaetsmedizin Berlin, Germany
| | - Mohamed Shalaby
- Pediatric Nephrology Center of Excellence and Pediatric Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Sherif El Desoky
- Pediatric Nephrology Center of Excellence and Pediatric Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence and Pediatric Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Shirlee Shril
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Soeren S Lienkamp
- Department of Medicine, Renal Division, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | | | - Friedhelm Hildebrandt
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
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22
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Shalaby M, Abdel-Rahman A, Zaid I, Youness E, Mohamed N. Protective effect of drug loaded nanoparticles on brain toxicity in experimental animals. Egypt J Chem 2021. [DOI: 10.21608/ejchem.2021.55927.3196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Shalaby M, Chandran H, Elford S, Kirk J, McCarthy L. Recommendations of patients and families of girls with 46XX congenital adrenal hyperplasia in the United Kingdom regarding the timing of surgery. Pediatr Surg Int 2021; 37:137-143. [PMID: 33230638 DOI: 10.1007/s00383-020-04780-3] [Citation(s) in RCA: 4] [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] [Accepted: 11/09/2020] [Indexed: 01/28/2023]
Abstract
PURPOSE The timing of surgery for congenital adrenal hyperplasia (CAH) is contentious. We aimed to survey expert families and patients for their recommendations regarding timing of surgery for a family with a newly diagnosed CAH child. METHODS A Survey Monkey questionnaire was performed at the 2017 meeting of the CAH support group, "Living with CAH", and also sent to the members of the CAH support group. The surgical-timing responses were a Likert score from 1 (strongly disagree) to 5 (strongly agree). Data were analysed by Kruskal-Wallis test. p < 0.05 taken as significant. RESULTS Of the 61 respondents, 12 were CAH patients, 43 were CAH parents, 3 were physicians, 1 surgeon and 2 others. For all respondents, the Likert score was 3 for infant, toddler and adult timing of surgery (neutral), not statistically significant (ns). For parents and/or children who had surgery (n = 26), the score was 4 (3-5) for infant vs. 4 (3-4) for toddler-years vs. 2 (1-3) for adulthood. This was statistically significant (p = 0.0002). When only patients who had CAH surgery were included, there were only 8 respondents and their scores were: infancy 3 (2-4) vs. toddler-years 4 (2-4) vs. adulthood 1 (1-4), ns. CONCLUSION Expert families and patients in the United Kingdom who have had CAH surgery, recommend surgery in the first few years of life vs. adulthood. There is a selection bias, however this may support MDTs in continuing to discuss surgery as an option in childhood.
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Affiliation(s)
- Mohamed Shalaby
- Department of Paediatric Surgery, Bristol Royal Hospital for Children, Bristol, BS2 8BJ, UK.
| | - Harish Chandran
- Department of Paediatric Surgery, Birmingham Children's Hospital, Birmingham, UK
| | - Sue Elford
- CAH Support Group, Living with CAH, Cambridge, UK
| | - Jeremy Kirk
- Department of Paediatric Endocrinology, Birmingham Children's Hospital, Birmingham, UK
| | - Liam McCarthy
- Department of Paediatric Surgery, Birmingham Children's Hospital, Birmingham, UK
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Heaton P, Shalaby M, Vaina C, Brown S, Gradhand E, Paul S. Accessory scrotum with perineal lipoma/hamartoma mimicking penoscrotal pseudoduplication. Sudan J Paediatr 2021; 21:219-223. [DOI: 10.24911/sjp.106-1597356690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 05/22/2021] [Indexed: 11/11/2022]
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25
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Shalaby M, El Baradie TS, Salama M, Shaaban HAM, Allam RM, Hafiz EOA, Abdelhamed MA, Attia A. Conventional peritoneal cytology lacks the prognostic significance of detecting local or peritoneal recurrence in colorectal cancer: An Egyptian experience. JGH Open 2020; 5:264-272. [PMID: 33553666 PMCID: PMC7857300 DOI: 10.1002/jgh3.12482] [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] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 11/10/2022]
Abstract
Background and Aim Colorectal cancer (CRC) accounts for over 8% of all deaths each year, with 1.2 million new cases diagnosed annually worldwide. It represents the seventh most common cancer in Egypt. Early detection of peritoneal metastasis is a major challenge in such cases. It helps with the decision of the immediate application of intraperitoneal chemotherapy after resection. Meta-analysis studies reported contrast evidence for a possible prognostic role of intraperitoneal free cancer cells (IPCCs) in peritoneal recurrence and survival after curative resection. In this work, we aim to evaluate the prevalence and impact of detecting free malignant cells in peritoneal fluid on survival and local recurrence and to estimate the incidence of peritoneal carcinomatosis (PC) during follow up. Methods Design: This was a prospective cohort study. Settings: From June 2016 to December 2018, samples were collected from 104 patients who underwent abdominal surgery for colorectal cancer in the Egyptian National Cancer Institute. A total of 96 Egyptian CRC patients who underwent curative resection were enrolled. Intraoperative peritoneal lavage was performed to detect IPCC by conventional cytology. Patients with no residual tumor after surgery and no evidence of PC were followed up for a median 14 months. The cumulative 12-month overall survival rate for patients with IPCC was 100% versus 86% for patients with negative cytology. Results Our results demonstrated that the prevalence of IPCC in the peritoneal lavage was 11.5%. Peritoneal and local recurrence occurred at a higher rate in patients with cytology positive lavage (9.1% vs 6.3% and 9.1% vs 3.8%, respectively), although this was statistically insignificant. Distant metastasis occurred significantly in patients with positive cytology (45.5% vs 8.9%) with P-value <0.001.The conventional cytology technique has a high specificity but less sensitivity. Conclusions The presence of IPCC using conventional cytology was not an independent prognostic factor for the development of PC or survival.
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Affiliation(s)
- Mohamed Shalaby
- Surgery Department National Cancer Institute, Cairo University Cairo Egypt
| | - Tarek S El Baradie
- Surgery Department National Cancer Institute, Cairo University Cairo Egypt
| | - Mohamed Salama
- Surgery Department National Cancer Institute, Cairo University Cairo Egypt
| | - Hebat A M Shaaban
- Department of Pathology National Cancer Institute, Cairo University Cairo Egypt
| | - Rasha M Allam
- Biostatistics and Cancer Epidemiology Department National Cancer Institute, Cairo University Cairo Egypt
| | - Ehab O A Hafiz
- Clinical Laboratory Research Department Theodor Bilharz Research Institute (TBRI) Giza Egypt
| | | | - Amr Attia
- Surgery Department National Cancer Institute, Cairo University Cairo Egypt
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26
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Roeder F, Shalaby M, Beleites B, Ronneberger F, Gopal A. THz generation by optical rectification of intense near-infrared pulses in organic crystal BNA. Opt Express 2020; 28:36274-36285. [PMID: 33379725 DOI: 10.1364/oe.404690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/07/2020] [Indexed: 06/12/2023]
Abstract
Generation of terahertz radiation by optical rectification of intense near-infrared laser pulses in N-benzyl-2-methyl-4-nitroaniline (BNA) is investigated in detail by carrying out a complete characterization of the terahertz radiation. We studied the scaling of THz yield with pump pulse repetition rate and fluence which enabled us to predict the optimal operating conditions for BNA crystals at room temperature for 800 nm pump wavelength. Furthermore, recording the transmitted laser spectrum allowed us to calculate the nonlinear refractive index of BNA at 800 nm.
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27
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Giarratano G, Shalaby M, Toscana C, Sileri P. Single-stapled parachute technique for grade IV prolapsed haemorrhoids - a video vignette. Colorectal Dis 2020; 22:1800-1801. [PMID: 32609921 DOI: 10.1111/codi.15226] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 06/09/2020] [Indexed: 02/08/2023]
Affiliation(s)
- G Giarratano
- Department of General Surgery, Casa di Cura Nuova Itor, Rome, Italy.,Department of General Surgery, University of Rome Tor Vergata, Rome, Italy
| | - M Shalaby
- Department of General Surgery, Colorectal Surgery Unit, Mansoura University Hospitals, Mansoura University, Mansoura, Egypt
| | - C Toscana
- Department of General Surgery, Casa di Cura Nuova Itor, Rome, Italy
| | - P Sileri
- Department of Surgery, Università Vita Salute San Raffaele, Milan, Italy
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28
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Emile S, Shalaby M, Elshobaky A, Khafagy W, Farid M. Utility of the Mansoura Numeroalphabetic Constipation Score in detection of obstructed defaecation syndrome and prediction of the outcome of treatment. Colorectal Dis 2020; 22:1348-1358. [PMID: 32333504 DOI: 10.1111/codi.15082] [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: 12/08/2019] [Accepted: 04/01/2020] [Indexed: 02/08/2023]
Abstract
AIM Thorough assessment of obstructed defaecation syndrome (ODS) is imperative for the selection of treatment options. The present study aimed to examine the utility of the Mansoura Numeroalphabetic Constipation Score (MNCS) in distinguishing patients with ODS from healthy control subjects and in predicting the outcome of treatment of ODS. METHODS Patients with ODS associated with anterior rectocele and/or rectoanal intussusception were assessed with the MNCS at the first visit to the clinic. All patients were offered conservative treatment for 3 months and patients who improved were continued on conservative treatment for six more months while patients who failed were treated surgically. The MNCS was reassessed at the end of follow-up in both groups. A cohort of healthy controls was compared to ODS patients with regard to age, sex and baseline MNCS. RESULTS In all, 124 ODS patients and 53 healthy controls were included. The ODS patients had a significantly higher baseline MNCS than controls (9.5 ± 1.5 vs 0.76 ± 0.71, P < 0.0001). Forty of 124 patients improved after conservative management and showed a significant decrease in MNCS (6.9 ± 1.08 to 3.1 ± 1.2, P < 0.0001). Eighty-four (67.8%) patients failed to respond to conservative measures and were surgically treated, 77 (91.6%) of whom showed significant improvement in symptoms postoperatively while seven (8.4%) failed to improve; the difference in postoperative MNCS between the two groups was significant. CONCLUSION The MNCS successfully distinguished ODS patients from controls and was able to predict the outcome of ODS treatment.
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Affiliation(s)
- S Emile
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - M Shalaby
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - A Elshobaky
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - W Khafagy
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - M Farid
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
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Giarratano G, Shalaby M, Toscana C, Sileri P. Video-assisted anal fistula treatment for complex anal fistula: a long-term follow-up study. Colorectal Dis 2020; 22:939-944. [PMID: 32030874 DOI: 10.1111/codi.15005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 07/25/2019] [Accepted: 01/07/2020] [Indexed: 12/14/2022]
Abstract
AIM This prospective study aimed to evaluate the safety and efficacy of video-assisted anal fistula treatment (VAAFT) in complex fistula-in-ano (FIA). METHOD Consecutive patients presenting with complex FIA were recruited between November 2012 and November 2018. The primary outcome was healing of the fistula. RESULTS Seventy-two patients were included, 39 (54%) of whom were men, with a mean age of 46 (±11) years. The mean follow-up was 32 (±18) months. Complete healing was achieved in 64 (89%) patients. When persistent and recurrent cases were considered together, the failure rate was 21% and the success rate 79%. When patients failed, they were offered VAAFT again, after which there was an in increase in the healing rate, which overall (primary and secondary) was 86%. There was no statistically significant deterioration in continence. Eight (11%) patients experienced postoperative complications which required no additional surgical intervention. CONCLUSION VAAFT represents a promising, sphincter-saving technique for the treatment of complex FIA. It has proved efficacious, with 79% of patients achieving complete healing after its primary application. After a second use, this reached 86%. The main advantage of VAAFT compared with other sphincter-saving techniques is working under direct vision. VAAFT has a good safety profile with 11% of patients experiencing minor complications, and there is no effect on continence.
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Affiliation(s)
- G Giarratano
- Department of General Surgery, Casa di Cura Nuova Itor, Rome, Italy.,Department of General Surgery, University of Rome Tor Vergata, Rome, Italy
| | - M Shalaby
- Department of General Surgery, Mansoura University, Mansoura, Egypt.,Department of General Surgery UOC C, Policlinico Tor Vergata University Hospital, Rome, Italy
| | - C Toscana
- Department of General Surgery, Casa di Cura Nuova Itor, Rome, Italy
| | - P Sileri
- Department of General Surgery, University of Rome Tor Vergata, Rome, Italy.,Department of General Surgery UOC C, Policlinico Tor Vergata University Hospital, Rome, Italy
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Kari J, Albanna A, Alhassan K, Safdar O, Shalaby M, Bockenhauer D, El-Desoky S. P0401RITUXIMAB VESUS CYCLOPHOSPHAMIDE AS FIRST STEROID SPARING AGENT IN CHILDHOOD FREQUENTLY RELAPSING OR STEROID DEPENDENT NEPHROTIC SYNDROME. Nephrol Dial Transplant 2020. [DOI: 10.1093/ndt/gfaa142.p0401] [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: 11/13/2022] Open
Abstract
Abstract
Background and Aims
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
Method
A prospective open label 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 (3mg/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
46 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=?) reduction in prescribed dose of oral alternate days steroid from 1.02 to 0.36mg/kg (Cyclophoshamide) and 0.86 to 0.08mg/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 beside severe leucopenia and neutropenia on the 7th week of treatment although she showed complete recovery with withdrawal of cyclophosphamide and maintained remission. A minor infusion related reaction was observed in 1 patient (5%) in the rituximab group.
Conclusion
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
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Affiliation(s)
- Jameela Kari
- King Abdulaziz University, Faculty of Medicine, 2Paediatric Nephrology unit, Department of Pediatrics,, Jeddah, Saudi Arabia
| | - Amr Albanna
- King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Khalid Alhassan
- King Saud University, Riyadh, KSA, Pediatrics Department,, Riyadh, Saudi Arabia
| | - Osama Safdar
- King Abdulaziz University, Faculty of Medicine, 2Paediatric Nephrology unit, Department of Pediatrics,, Jeddah, Saudi Arabia
| | - Mohamed Shalaby
- King Abdulaziz University, Faculty of Medicine, 2Paediatric Nephrology unit, Department of Pediatrics,, Jeddah, Saudi Arabia
| | - Detlef Bockenhauer
- University College London, Centre for Nephrology,, London, United Kingdom
| | - Sherif El-Desoky
- King Abdulaziz University, Faculty of Medicine, 2Paediatric Nephrology unit, Department of Pediatrics,, Jeddah, Saudi Arabia
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Abdelhamed MA, Abdellatif A, Touny A, Mahmoud AM, Ahmed IS, Maamoun S, Shalaby M. Laparoscopic gastrectomy with D2 lymphadenectomy for gastric cancer: initial Egyptian experience at the National Cancer Institute. J Egypt Natl Canc Inst 2020; 32:10. [PMID: 32372263 DOI: 10.1186/s43046-020-00023-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/07/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Laparoscopic gastrectomy has been used as a superior alternative to open gastrectomy for the treatment of early gastric cancer. However, the application of laparoscopic D2 lymphadenectomy remains controversial. This study aimed to evaluate the feasibility and outcomes of laparoscopic gastrectomy with D2 lymphadenectomy for gastric cancer. RESULTS Between May 2016 and May 2018, twenty-five consecutive patients with gastric cancer underwent laparoscopic D2 gastrectomy: eighteen patients (72%) underwent distal gastrectomy, four patients (16%) underwent total gastrectomy, and three patients (12%) underwent proximal gastrectomy. The median number of lymph nodes retrieved was 18 (5-35). A positive proximal margin was detected in 2 patients (8%). The median operative time and amount of blood loss were 240 min (200-330) and 250 ml (200-450), respectively. Conversion to an open procedure was performed in seven patients (28%). The median hospital stay period was 8 days (6-30), and the median time to start oral fluids was 4 days (3-30). Postoperative complications were detected in 4 patients (16%). There were two cases of mortality (8%) in the postoperative period, and two patients required reoperation (8%). CONCLUSIONS Laparoscopic gastrectomy with D2 lymphadenectomy can be carried out safely and in accordance with oncologic principles.
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Affiliation(s)
- Mohamed Aly Abdelhamed
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt.
| | - Ahmed Abdellatif
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ahmed Touny
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ahmed Mostafa Mahmoud
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ihab Saad Ahmed
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Sherif Maamoun
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Mohamed Shalaby
- Department of Surgical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
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Elfeki H, Shalaby M, Emile SH, Sakr A, Mikael M, Lundby L. A systematic review and meta-analysis of the safety and efficacy of fistula laser closure. Tech Coloproctol 2020; 24:265-274. [PMID: 32065306 DOI: 10.1007/s10151-020-02165-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [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: 12/13/2019] [Accepted: 02/07/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Fistula laser closure (FiLaC) is a novel sphincter-saving technique for the treatment of fistula-in-ano. The aim of this study was to assess the safety and efficacy of the FiLaC procedure. METHODS Databases including PubMed/Medline, Scopus, Web of Science, and Embase were searched for articles assessing FiLaC. All studies including case series and comparative studies reporting the outcome of FiLaC in the treatment of fistula-in-ano were considered eligible. The main outcomes were healing rates of fistula laser closure, postoperative complications including incontinence, technical aspects of the procedure and failure of healing. RESULTS Seven studies were included. There were a total of 454 patients, 69.1% with a transsphincteric fistula-in-ano and 35% with recurrent disease. The median age of the patients was 43 years (range 18-83 years). The median operation time was 18.3 min (range 6-32 min). With a median follow-up of 23.7 months, the weighed mean rate of primary healing was 67.3% and the overall success when FiLaC was reused was 69.7%. The weighted mean rate of complications was 4%, all of them were minor complications and the weighted mean rate of continence affection was 1% in the form of minor soiling. CONCLUSIONS FiLaC may be considered an effective and safe sphincter-saving technique for the treatment of fistula-in-ano with an acceptable, low, complication rate. However, well-designed randomized control trials comparing FiLaC with other techniques are required to substantiate the promising outcomes reported in this review.
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Affiliation(s)
- H Elfeki
- Department of Surgery, Colorectal Surgery Unit, Mansoura University Hospital, Mansoura, Egypt. .,Department of Surgery, Aarhus University Hospital, Aarhus, Denmark.
| | - M Shalaby
- Department of Surgery, Colorectal Surgery Unit, Mansoura University Hospital, Mansoura, Egypt
| | - S H Emile
- Department of Surgery, Colorectal Surgery Unit, Mansoura University Hospital, Mansoura, Egypt
| | - A Sakr
- Department of Surgery, Colorectal Surgery Unit, Mansoura University Hospital, Mansoura, Egypt
| | - M Mikael
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - L Lundby
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
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Mann N, Kause F, Henze EK, Gharpure A, Shril S, Connaughton DM, Nakayama M, Klämbt V, Majmundar AJ, Wu CHW, Kolvenbach CM, Dai R, Chen J, van der Ven AT, Ityel H, Tooley MJ, Kari JA, Bownass L, El Desoky S, De Franco E, Shalaby M, Tasic V, Bauer SB, Lee RS, Beckel JM, Yu W, Mane SM, Lifton RP, Reutter H, Ellard S, Hibbs RE, Kawate T, Hildebrandt F. CAKUT and Autonomic Dysfunction Caused by Acetylcholine Receptor Mutations. Am J Hum Genet 2019; 105:1286-1293. [PMID: 31708116 DOI: 10.1016/j.ajhg.2019.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 10/09/2019] [Indexed: 12/13/2022] Open
Abstract
Congenital anomalies of the kidney and urinary tract (CAKUT) are the most common cause of chronic kidney disease in the first three decades of life, and in utero obstruction to urine flow is a frequent cause of secondary upper urinary tract malformations. Here, using whole-exome sequencing, we identified three different biallelic mutations in CHRNA3, which encodes the α3 subunit of the nicotinic acetylcholine receptor, in five affected individuals from three unrelated families with functional lower urinary tract obstruction and secondary CAKUT. Four individuals from two families have additional dysautonomic features, including impaired pupillary light reflexes. Functional studies in vitro demonstrated that the mutant nicotinic acetylcholine receptors were unable to generate current following stimulation with acetylcholine. Moreover, the truncating mutations p.Thr337Asnfs∗81 and p.Ser340∗ led to impaired plasma membrane localization of CHRNA3. Although the importance of acetylcholine signaling in normal bladder function has been recognized, we demonstrate for the first time that mutations in CHRNA3 can cause bladder dysfunction, urinary tract malformations, and dysautonomia. These data point to a pathophysiologic sequence by which monogenic mutations in genes that regulate bladder innervation may secondarily cause CAKUT.
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Dufek S, Cheshire C, Levine AP, Trompeter RS, Issler N, Stubbs M, Mozere M, Gupta S, Klootwijk E, Patel V, Hothi D, Waters A, Webb H, Tullus K, Jenkins L, Godinho L, Levtchenko E, Wetzels J, Knoers N, Teeninga N, Nauta J, Shalaby M, Eldesoky S, Kari JA, Thalgahagoda S, Ranawaka R, Abeyagunawardena A, Adeyemo A, Kristiansen M, Gbadegesin R, Webb NJ, Gale DP, Stanescu HC, Kleta R, Bockenhauer D. Genetic Identification of Two Novel Loci Associated with Steroid-Sensitive Nephrotic Syndrome. J Am Soc Nephrol 2019; 30:1375-1384. [PMID: 31263063 DOI: 10.1681/asn.2018101054] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 04/22/2019] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Steroid-sensitive nephrotic syndrome (SSNS), the most common form of nephrotic syndrome in childhood, is considered an autoimmune disease with an established classic HLA association. However, the precise etiology of the disease is unclear. In other autoimmune diseases, the identification of loci outside the classic HLA region by genome-wide association studies (GWAS) has provided critical insights into disease pathogenesis. Previously conducted GWAS of SSNS have not identified non-HLA loci achieving genome-wide significance. METHODS In an attempt to identify additional loci associated with SSNS, we conducted a GWAS of a large cohort of European ancestry comprising 422 ethnically homogeneous pediatric patients and 5642 ethnically matched controls. RESULTS The GWAS found three loci that achieved genome-wide significance, which explain approximately 14% of the genetic risk for SSNS. It confirmed the previously reported association with the HLA-DR/DQ region (lead single-nucleotide polymorphism [SNP] rs9273542, P=1.59×10-43; odds ratio [OR], 3.39; 95% confidence interval [95% CI], 2.86 to 4.03) and identified two additional loci outside the HLA region on chromosomes 4q13.3 and 6q22.1. The latter contains the calcium homeostasis modulator family member 6 gene CALHM6 (previously called FAM26F). CALHM6 is implicated in immune response modulation; the lead SNP (rs2637678, P=1.27×10-17; OR, 0.51; 95% CI, 0.44 to 0.60) exhibits strong expression quantitative trait loci effects, the risk allele being associated with lower lymphocytic expression of CALHM6. CONCLUSIONS Because CALHM6 is implicated in regulating the immune response to infection, this may provide an explanation for the typical triggering of SSNS onset by infections. Our results suggest that a genetically conferred risk of immune dysregulation may be a key component in the pathogenesis of SSNS.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Vaksha Patel
- Great Ormond Street Hospital, London, United Kingdom
| | - Daljit Hothi
- Great Ormond Street Hospital, London, United Kingdom
| | - Aoife Waters
- Great Ormond Street Hospital, London, United Kingdom
| | - Hazel Webb
- Great Ormond Street Hospital, London, United Kingdom
| | - Kjell Tullus
- Great Ormond Street Hospital, London, United Kingdom
| | - Lucy Jenkins
- Great Ormond Street Hospital, London, United Kingdom
| | | | - Elena Levtchenko
- University Hospitals Leuven and University of Leuven, Leuven, Belgium
| | - Jack Wetzels
- Nephrology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Nine Knoers
- Department of Genetics, UMC Groningen, Groningen, The Netherlands
| | - Nynke Teeninga
- Department of Pediatric Nephrology, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Jeroen Nauta
- Department of Pediatric Nephrology, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Mohamed Shalaby
- Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Sherif Eldesoky
- Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Jameela A Kari
- Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | | | - Randula Ranawaka
- Department of Paediatrics, University of Peradeniya, Peradeniya, Sri Lanka
| | | | | | - Mark Kristiansen
- University College London Genomics, Institute of Child Health, University College London, London, United Kingdom
| | - Rasheed Gbadegesin
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina; and
| | - Nicholas J Webb
- Department of Paediatric Nephrology and.,NIHR Manchester Clinical Research Facility, Manchester Academic Health Science Centre, Royal Manchester Children's Hospital, Manchester, United Kingdom
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Anan M, Emile SH, Elgendy H, Shalaby M, Elshobaky A, Abdel-Razik MA, Elbaz SA, Farid M. Fistulotomy with or without marsupialisation of wound edges in treatment of simple anal fistula: a randomised controlled trial. Ann R Coll Surg Engl 2019; 101:472-478. [PMID: 31155896 DOI: 10.1308/rcsann.2019.0057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Promotion of healing of the anal wound after fistulotomy may help accelerate recovery and return to work. The present study aimed to assess the effect of marsupialisation of the edges of the laid open fistula track on wound healing after anal fistulotomy for simple anal fistula. METHODS This was a prospective randomised trial on patients with simple anal fistula. Patients were randomly assigned to one of two groups; group I underwent anal fistulotomy and group II underwent anal fistulotomy and marsupialisation of the edges of the laid open track. Outcomes of the study were time to achieve complete wound healing, operation time, postoperative pain and complications. RESULTS Sixty patients of mean age of 40.8 years with simple anal fistula were randomly divided into two equal groups. No significant differences between the two groups regarding operation time (16.8 vs 18.4 minutes; P = 0.054), postoperative pain score (1.6 vs 1.2; P = 0.22), and complication rates were recorded. Group II achieved complete healing in a significantly shorter duration than group I (5.1 vs 6.7 weeks; P < 0.0001). CONCLUSION Marsupialisation of the edges of the laid open fistula track after fistulotomy resulted in quicker wound healing with similar complication and recurrence rates to lay open fistulotomy alone.
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Affiliation(s)
- M Anan
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - S H Emile
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - H Elgendy
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - M Shalaby
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - A Elshobaky
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - M A Abdel-Razik
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - S A Elbaz
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
| | - M Farid
- Colorectal Surgery Unit, General Surgery Department, Mansoura University Hospitals, Mansoura University, Mansoura City, Egypt
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Giarratano G, Toscana C, Toscana E, Shalaby M, Sileri P. Stapled transanal rectal resection for the treatment of rectocele associated with obstructed defecation syndrome: a large series of 262 consecutive patients. Tech Coloproctol 2019; 23:231-237. [PMID: 30778786 DOI: 10.1007/s10151-019-01944-9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 02/05/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND This study aims to investigate functional results and recurrence rate after stapled transanal rectal resection (STARR) for rectocele associated with obstructive defection syndrome (ODS). METHODS A study was conducted on patients with ODS symptoms associated with symptomatic rectocele ≥ 3 cm on dynamic defecography who had STARR at our institution between 01/2007 and 12/2015. Data were prospectively collected and analyzed. ODS was evaluated using the Wexner constipation score. Primary outcomes were functional results, determined by the improvement in 6-month postoperative Wexner constipation score, and 1-year recurrence. Secondary outcomes were operative time, time to return to work, pain intensity measured using the visual analogue scale (VAS), patient satisfaction, and overall postoperative morbidity and mortality at 30 days. RESULTS Two-hundred-sixty-two consecutive female patients [median age 54 years (range 20-78)] were enrolled in the study. The median duration of follow-up was 79 months (range 30-138). Sixty (23%) patients experienced postoperative complications, but only 9 patients required reinterventions for surgical hemostasis (n = 7), fecal diversion for anastomotic leakage (n = 1), and recto-vaginal fistula repair (n = 1). Only 1 intraoperative complication (stapler misfire) was reported, and there were no deaths. There was a statistically significant (p < 0.001) reduction in the median (range) Wexner constipation score from 19 (14-24) preoperatively to 9 (5-15) 6 months postoperatively. Only 10 (4%) patients experienced recurrence and only 3 of them required additional reintervention. Patient satisfaction at 1 year was excellent in 86%, good in 13%, and poor in 1% of patients. CONCLUSIONS STARR is a safe, effective, and minimally invasive technique for the treatment of rectocele associated with ODS.
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Affiliation(s)
- G Giarratano
- Department of General Surgery, Villa Tiberia Hospital, Via Emilio Praga, 26, 00100, Rome, Italy
| | - C Toscana
- Department of General Surgery, Villa Tiberia Hospital, Via Emilio Praga, 26, 00100, Rome, Italy
| | - E Toscana
- Department of General Surgery, Villa Tiberia Hospital, Via Emilio Praga, 26, 00100, Rome, Italy.
| | - M Shalaby
- Colorectal Surgery Unit, Department of General Surgery, Mansoura University, Mansoura, Dakahlia, Egypt.,Department of General Surgery, University of Rome Tor Vergata, Policlinico Tor Vergata, Rome, Italy
| | - P Sileri
- Department of General Surgery, University of Rome Tor Vergata, Policlinico Tor Vergata, Rome, Italy
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Sileri P, Mastrovito S, Nicoli F, Orlandi A, Shalaby M. Autotransplantation of autologous adipose tissue-derived mesenchymal stem cells to treat complex fistula-in-ano - the FLiRT technique - a video vignette. Colorectal Dis 2019; 21:247-249. [PMID: 30548913 DOI: 10.1111/codi.14531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 11/13/2018] [Indexed: 02/08/2023]
Affiliation(s)
- P Sileri
- Department of General Surgery UOC C, University of Rome Tor Vergata, Rome, Italy
| | - S Mastrovito
- Department of General Surgery UOC C, University of Rome Tor Vergata, Rome, Italy
| | - F Nicoli
- Department of Plastic Surgery, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
| | - A Orlandi
- Department of Biomedicine and Prevention, Anatomic Pathology Section, University of Rome Tor Vergata, Rome, Italy
| | - M Shalaby
- Department of General Surgery UOC C, University of Rome Tor Vergata, Rome, Italy.,Department of General Surgery '8', University of Mansoura, Mansoura, Egypt
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Shalaby M, Emile S, Elfeki H, Sakr A, Wexner SD, Sileri P. Systematic review of endoluminal vacuum-assisted therapy as salvage treatment for rectal anastomotic leakage. BJS Open 2018; 3:153-160. [PMID: 30957061 PMCID: PMC6433422 DOI: 10.1002/bjs5.50124] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 11/05/2018] [Indexed: 12/17/2022] Open
Abstract
Background Endoluminal vacuum-assisted therapy (EVT) has been introduced recently to treat colorectal anastomotic leakage. The aim of this study was to evaluate the safety and efficacy of EVT in the treatment of anastomotic leakage and rectal stump insufficiency after Hartmann's procedure. Methods A systematic search of MEDLINE, Scopus and Cochrane databases was performed using search terms related to EVT and anastomotic leakage or rectal stump insufficiency in line with the PRISMA checklist. Observational studies, RCTs and case series studies published to July 2017 were included. Primary outcomes of the review were the success of EVT, defined as complete or partial healing of the anastomotic defect and associated cavity, and the rate of stoma reversal after EVT. Secondary outcomes included the duration of treatment to complete healing, complications of treatment and the need for further intervention. A meta-analysis was conducted. The potential effect of clinical confounders on the failure of EVT was investigated using the random-effects meta-regression model. Results Of 476 articles identified, 17 studies reporting on 276 patients were ultimately included. The weighted mean rate of success was 85·3 (95 per cent c.i. 80·1 to 90·5) per cent, with a median duration from inception of EVT to complete healing of 47 (range 40-105) days. The weighted mean rate of stoma reversal across the studies was 75·9 (64·6 to 87·2) per cent. Twenty-five patients (9·1 per cent) required additional interventions after EVT. Thirty-eight patients (13·8 per cent) developed complications. The weighted mean complication rate across the studies was 11·1 (6·0 to 16·2) per cent. Variables significantly associated with failure included preoperative radiotherapy, absence of diverting stoma, complications and male sex. Conclusion EVT is associated with a high rate of complete healing of anastomotic leakage and stoma reversal. It is an effective option in appropriately selected patients with anastomotic leakage.
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Affiliation(s)
- M Shalaby
- Department of General Surgery, Colorectal Surgery Unit Mansoura University Mansoura Egypt.,Department of General Surgery Rome Tor Vergata University Rome Italy
| | - S Emile
- Department of General Surgery, Colorectal Surgery Unit Mansoura University Mansoura Egypt
| | - H Elfeki
- Department of General Surgery, Colorectal Surgery Unit Mansoura University Mansoura Egypt.,Department of Surgery, Colorectal Surgery Unit Aarhus University Aarhus Denmark
| | - A Sakr
- Department of General Surgery, Colorectal Surgery Unit Mansoura University Mansoura Egypt
| | - S D Wexner
- Department of Colorectal Surgery Cleveland Clinic Florida Weston Florida USA
| | - P Sileri
- Department of General Surgery Rome Tor Vergata University Rome Italy
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Omar W, Elfeki H, Abdel-Razik MA, Shalaby M. A Delorme operation for full-thickness complete rectal prolapse - a video vignette. Colorectal Dis 2018; 20:1156. [PMID: 30295416 DOI: 10.1111/codi.14441] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 09/23/2018] [Indexed: 02/08/2023]
Affiliation(s)
- W Omar
- Department of General Surgery, Mansoura University, Mansoura, Egypt
| | - H Elfeki
- Department of General Surgery, Mansoura University, Mansoura, Egypt
| | - M A Abdel-Razik
- Department of General Surgery, Mansoura University, Mansoura, Egypt
| | - M Shalaby
- Department of General Surgery, Mansoura University, Mansoura, Egypt
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Sileri P, Shalaby M. Correction to: Biological mesh extrusion months after laparoscopic ventral rectopexy. Tech Coloproctol 2018; 22:827. [PMID: 30324410 DOI: 10.1007/s10151-018-1868-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Unfortunately, the 2nd affiliation of Dr. M. Shalaby has been missed out in the original publication. The complete 2nd affiliation of the same is given below.
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Affiliation(s)
- P Sileri
- University of Rome Tor Vergata, Rome, Italy.
| | - M Shalaby
- University of Rome Tor Vergata, Rome, Italy
- Department of General Surgery, Mansoura University, Mansoura, Egypt
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Shalaby M, Polisca P, Missori G, Sileri P. Correction to: Hiatal hernia, mitral valve prolapse and defecatory disorders: An underlying rectal prolapse? Tech Coloproctol 2018; 22:825. [PMID: 30324409 DOI: 10.1007/s10151-018-1867-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Unfortunately, the 2nd affiliation of Shalaby has been missed out in the original publication.
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Affiliation(s)
- M Shalaby
- Department of General Surgery, Policlinico Tor Vergata di Roma UOC B, University of Rome Tor Vergata, Viale Oxford 81, 00133, Rome, Italy.,Department of General Surgery, Mansoura University, Mansoura, Egypt
| | - P Polisca
- Department of Internal Medicine, Policlinico Tor Vergata, University of Rome Tor Vergata, Viale Oxford 81, 00133, Rome, Italy
| | - G Missori
- Department of General Surgery, Policlinico Tor Vergata di Roma UOC B, University of Rome Tor Vergata, Viale Oxford 81, 00133, Rome, Italy
| | - P Sileri
- Department of General Surgery, Policlinico Tor Vergata di Roma UOC B, University of Rome Tor Vergata, Viale Oxford 81, 00133, Rome, Italy.
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Emile SH, Elfeki H, Sakr A, Shalaby M. Management of acute uncomplicated diverticulitis without antibiotics: a systematic review, meta-analysis, and meta-regression of predictors of treatment failure. Tech Coloproctol 2018; 22:499-509. [PMID: 29980885 DOI: 10.1007/s10151-018-1817-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [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: 05/02/2018] [Accepted: 06/27/2018] [Indexed: 12/26/2022]
Abstract
BACKGROUND Diverticulitis is a common complication of diverticular disease of the colon. While complicated diverticulitis often warrants intervention, acute uncomplicated diverticulitis (AUD) is usually managed conservatively. The aim of the present review was to evaluate the efficacy and safety of conservative treatment of AUD without antibiotics compared to standard antibiotic treatment. METHODS A systematic literature review in compliance with PRISMA guidelines was conducted. Electronic databases including PubMed/Medline, Scopus, Embase and Cochrane central register of controlled trials were searched. Studies that assessed efficacy and safety of treatment of AUD without antibiotics were included. Outcome parameters were rates of treatment failure, recurrence of diverticulitis, complications and mortality, readmission to hospital, and need for surgery. RESULTS Nine studies including 2565 patients were included to the review. Of these patients, 65.1% were treated conservatively without antibiotics. Treatment failure was observed in 5.1% of patients not-given-antibiotic treatment versus 3.4% of those given antibiotic treatment. Recurrent diverticulitis occurred in 9.3% of patients in the non-antibiotic group versus 12.1% of patients in the antibiotic group. On meta-analysis of the studies, there were no significant differences between non-antibiotic and antibiotic treatment groups regarding rates of treatment failure (OR = 1.5, p = 0.06), recurrence of diverticulitis (OR = 0.81, p = 0.2), complications (OR = 0.56, p = 0.25), readmission rates (OR = 0.97, p = 0.91), need for surgery (OR = 0.59, p = 0.28), and mortality (OR = 0.64, p = 0.47). The only variable that was significantly associated with treatment failure in the non-antibiotic treatment group was associated comorbidities (standard error (SE) = - 0.07, 95% CI - 0.117 - 0.032; p < 0.001). CONCLUSIONS Treatment of AUD without antibiotics is feasible, safe, and effective. Adding broad-spectrum antibiotics to the treatment regimen did not serve to decrease treatment failure, recurrence, complications, hospital readmissions, and need for surgery significantly compared to non-antibiotic treatment.
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Affiliation(s)
- S H Emile
- Colorectal Surgery Unit, Department of General Surgery, Mansoura Faculty of Medicine, Mansoura University Hospitals, Mansoura University, Elgomhuoria Street, Mansoura City, Egypt.
| | - H Elfeki
- Colorectal Surgery Unit, Department of General Surgery, Mansoura Faculty of Medicine, Mansoura University Hospitals, Mansoura University, Elgomhuoria Street, Mansoura City, Egypt
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - A Sakr
- Colorectal Surgery Unit, Department of General Surgery, Mansoura Faculty of Medicine, Mansoura University Hospitals, Mansoura University, Elgomhuoria Street, Mansoura City, Egypt
| | - M Shalaby
- Colorectal Surgery Unit, Department of General Surgery, Mansoura Faculty of Medicine, Mansoura University Hospitals, Mansoura University, Elgomhuoria Street, Mansoura City, Egypt
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Affiliation(s)
- M Shalaby
- General and Colorectal Surgery, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - H Elfeki
- General and Colorectal Surgery, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - W Omar
- General and Colorectal Surgery, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Abo Elkheir W, Gabr H, Shalaby M, Elshahef A, Kadry M. Autologous adipose derived stem cell versusplatelet rich plasma injection in the treatment of androgentic alopecia: Efficacy, side effects and safety. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Din A, Azab M, Shalaby M. Pesticide Residues Monitoring of Organophosphorus and Carbamates in Grapes in Three Egyptian Governorates. ACTA ACUST UNITED AC 2018. [DOI: 10.9734/acri/2018/38986] [Citation(s) in RCA: 3] [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] [Indexed: 11/09/2022]
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Elzaher MFA, Shalaby M, Kamal Y, Ramly SE. Securing digital voice communication using non-autonomous modulated chaotic signal. Journal of Information Security and Applications 2017. [DOI: 10.1016/j.jisa.2017.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Affiliation(s)
- P Sileri
- University of Rome Tor Vergata, Rome, Italy.
| | - M Shalaby
- University of Rome Tor Vergata, Rome, Italy
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Elzaher MFA, Shalaby M, El Ramly SH. An Arnold Cat Map-Based Chaotic Approach for Securing Voice Communication. Proceedings of the 10th International Conference on Informatics and Systems 2016. [DOI: 10.1145/2908446.2908508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Mahmoud F. Abd Elzaher
- Department of Electronics and Electrical communications, Ain Shams University, Cairo, Egypt
| | - Mohamed Shalaby
- Department of Computer Science, Arab Academy for Science, Technology, Maritime Transport, Cairo, Egypt
| | - Salwa H. El Ramly
- Department of Electronics and Electrical communications, Ain Shams University, Cairo, Egypt
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Shalaby M, Polisca P, Missori G, Sileri P. Hiatal hernia, mitral valve prolapse and defecatory disorders: An underlying rectal prolapse? Tech Coloproctol 2016; 20:337-338. [DOI: 10.1007/s10151-016-1442-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 01/31/2016] [Indexed: 02/03/2023]
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