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Article ; Online: Rational optimization of g-C

Sanad, Moustafa M S / Taha, Taha A / Helal, Ahmed / Mahmoud, Mohamed H

Environmental science and pollution research international

2023 Volume 30, Issue 21, Page(s) 60225–60239

Abstract: Heterogeneous catalysis is widely known as an efficient, clean, and low-cost technology to mitigate the environmental pollution of industrial effluents. This research aimed at optimizing the preparation and characterization of efficient g- ... ...

Abstract	Heterogeneous catalysis is widely known as an efficient, clean, and low-cost technology to mitigate the environmental pollution of industrial effluents. This research aimed at optimizing the preparation and characterization of efficient g-C
MeSH term(s)	Photolysis ; Rhodamines ; Light ; Nanocomposites/chemistry ; Catalysis
Chemical Substances	rhodamine B (K7G5SCF8IL) ; Rhodamines
Language	English
Publishing date	2023-04-05
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-023-26767-y
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Article ; Online: Retraction Note to: Inhibition of Tomato Yellow Leaf Curl Virus (TYLCV) using whey proteins.

Abdelbacki, Ashraf M / Taha, Soad H / Sitohy, Mahmoud Z / Dawood, Abdelgawad I Abou / Hamid, Mahmoud M Abd-El / Rezk, Adel A

Virology journal

2023 Volume 20, Issue 1, Page(s) 129

Language	English
Publishing date	2023-06-19
Publishing country	England
Document type	Retraction of Publication
ZDB-ID	2160640-7
ISSN	1743-422X ; 1743-422X
ISSN (online)	1743-422X
ISSN	1743-422X
DOI	10.1186/s12985-023-02100-4
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Article: Delayed brain abscess as a complication of cerebral infarction: A rare case report and review of the literature.

Taha, Mahmoud M / Elbadawy, Mohamed Kh / Azzam, Amr M N / Taha, Mazen M / Alkheder, Ahmad / Abualkhair, Khaled Alsayed

International journal of surgery case reports

2024 Volume 117, Page(s) 109500

Abstract: Introduction: Systemic infections are a common complication of cerebral stroke, while the development of a cerebral abscess on the background of infarcted brain tissue is an extremely rare occurrence. Here, we present a new case alongside a literature ... ...

Abstract	Introduction: Systemic infections are a common complication of cerebral stroke, while the development of a cerebral abscess on the background of infarcted brain tissue is an extremely rare occurrence. Here, we present a new case alongside a literature review. Case presentation: A previously healthy 37-year-old man presented with sudden right-sided weakness and speech difficulties, progressing to complete aphasia. Initial tests showed no abnormalities, but subsequent CT scans revealed left basal ganglia infarction. Despite treatment and improvement, three months later, his condition worsened, leading to surgical intervention to excision of a cerebral abscess caused by Staphylococcus aureus. Following successful surgery and treatment, the patient showed improvement and was discharged for regular follow-up care. Discussion: The convergence of stroke and brain abscess poses serious clinical challenges, requiring prompt diagnosis and treatment to mitigate catastrophic consequences. Brain abscess, stemming from cerebral infection, may arise from various sources, including contiguous spread, hematogenous dissemination, or traumatic injury. Diagnosis is complicated by nonspecific radiological findings, which often lead to misdiagnosis. Risk factors include age, immunocompromised states, and certain medical conditions. Despite challenges, early detection and appropriate management, involving surgical drainage and antimicrobial therapy, are crucial for favorable outcomes. Conclusion: Cerebral abscess following cerebral infarction is rare but should be suspected in patients with prior stroke or hemorrhage, experiencing worsening focal deficits and consciousness. Advanced age and comorbidities increase clinical suspicion.
Language	English
Publishing date	2024-03-11
Publishing country	Netherlands
Document type	Case Reports
ISSN	2210-2612
ISSN	2210-2612
DOI	10.1016/j.ijscr.2024.109500
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Article ; Online: High adsorption of sodium diclofenac on post-synthetic modified zirconium-based metal-organic frameworks: Experimental and theoretical studies.

Younes, Heba A / Taha, Mohamed / Mahmoud, Rehab / Mahmoud, Hamada M / Abdelhameed, Reda M

Journal of colloid and interface science

2021 Volume 607, Issue Pt 1, Page(s) 334–346

Abstract: Water pollution by pharmaceuticals is currently a great concern due to their ecological risks. In this study, zirconium-based metal-organic frameworks (UiO-66-(COOH) ...

Abstract	Water pollution by pharmaceuticals is currently a great concern due to their ecological risks. In this study, zirconium-based metal-organic frameworks (UiO-66-(COOH)
MeSH term(s)	Adsorption ; Diclofenac ; Metal-Organic Frameworks ; Models, Theoretical ; Spectroscopy, Fourier Transform Infrared ; Zirconium
Chemical Substances	Metal-Organic Frameworks ; Diclofenac (144O8QL0L1) ; Zirconium (C6V6S92N3C)
Language	English
Publishing date	2021-08-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2021.08.158
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Article: Spinal intramedullary schwannoma: Report of two cases with review of the literature.

Salamah, Hazem Mohamed / Eltokhy, Ahmed G / Ezzat, Mohammad / Alkheder, Ahmad / Taha, Mahmoud M

International journal of surgery case reports

2024 Volume 117, Page(s) 109479

Abstract: Introduction: Spinal tumors comprise 15 % of all central nervous system tumors, with schwannomas accounting for 30 % of primary intraspinal neoplasms. While predominantly extramedullary-intradural, spinal schwannomas rarely manifest intramedullary ... ...

Abstract	Introduction: Spinal tumors comprise 15 % of all central nervous system tumors, with schwannomas accounting for 30 % of primary intraspinal neoplasms. While predominantly extramedullary-intradural, spinal schwannomas rarely manifest intramedullary occurrences (0.3 % of intraspinal tumors). This study sheds light on two rare cases of thoracic intramedullary schwannomas, emphasizing their diagnostic complexities and surgical management, alongside a literature review. Case presentation: Case 1 involves a 50-year-old female presenting with worsening back pain, right lower limb weakness, and urinary incontinence. MRI revealed an intradural intramedullary soft tissue mass, diagnosed as a schwannoma with an associated organizing hematoma. Surgical removal led to gradual improvement. Case 2 features a 25-year-old male with back pain, partial foot drop, and weakness in the right knee and hip. MRI demonstrated an intradural intramedullary lesion, later confirmed as an intradural intramedullary schwannoma. Surgery resulted in a smooth recovery without adverse effects. Discussion: This article presents two cases of intradural intramedullary thoracic schwannomas initially misdiagnosed as astrocytomas. Surgical resection confirmed the diagnosis, underscoring challenges in preoperative MRI diagnosis. The review of 174 reported cases reveals an equal distribution between the cervical and thoracic regions, with males affected 1.5 times more frequently than females. The average age of onset is 40, and surgical treatment demonstrates a 90 % improvement rate. The complex pathogenesis encompasses six proposed explanations. Clinical suspicion, considering pain and neurological symptoms, is paramount due to potential misdiagnosis and the imperative for histological confirmation. Conclusion: Although rare, intramedullary schwannomas (IMS) have significant clinical implications, necessitating precise treatment. Surgical resection yields favorable outcomes, with subtotal resection considered based on adhesion factors. Pre-surgical diagnosis requires a comprehensive integration of radiological and clinical data, with intraoperative analysis ensuring optimal treatment strategies.
Language	English
Publishing date	2024-03-06
Publishing country	Netherlands
Document type	Case Reports
ISSN	2210-2612
ISSN	2210-2612
DOI	10.1016/j.ijscr.2024.109479
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Article: Mobile schwannoma of the thoracolumbar spine: A case report.

Mohamed, Hazem A / Elboraay, Toka / Abualkhair, Khaled Alsayed / Salama, Hosni / Alkheder, Ahmad / Taha, Mahmoud M

International journal of surgery case reports

2024 Volume 115, Page(s) 109266

Abstract: Introduction: Schwannoma, a benign nerve sheath tumor originating from Schwann cells, can migrate within the spine due to various factors, impacting surgical planning. Unforeseen movement complicates treatment, and it is considered a very rare tumor.: ...

Abstract	Introduction: Schwannoma, a benign nerve sheath tumor originating from Schwann cells, can migrate within the spine due to various factors, impacting surgical planning. Unforeseen movement complicates treatment, and it is considered a very rare tumor. Case presentation: A 24-year-old woman complained of persistent back pain and was examined at a neurosurgery clinic. Initial MRI found a spinal lesion that later moved, leading to two surgeries. The diagnosis was a Schwannoma, confirmed by examining the tissue under a microscope, showing characteristic features of a Schwannoma, specifically Antoni type A with recent hemorrhage. Discussion: Schwannoma, a rare nerve cell tumor, often migrates within the spine due to its lack of attachment within the dura. The tumor's movement can be triggered by various factors like nerve root laxity, pressure changes, body positioning, or medical procedures. A case study discussed a woman with back pain; her tumor migrated between two MRI scans, showcasing a common migration pattern. Lower back pain commonly manifests as a primary symptom in most cases. Imaging techniques such as myelography and intraoperative ultrasound assist in locating and managing these mobile tumors, advocating for their utilization to minimize surgical complications. Conclusion: Reported a rare mobile thoracolumbar schwannoma from nerve sheath cells. Its mobility complicates surgery; precise imaging like intraoperative MRI and ultrasound are crucial for localization, preventing complications.
Language	English
Publishing date	2024-01-13
Publishing country	Netherlands
Document type	Case Reports
ISSN	2210-2612
ISSN	2210-2612
DOI	10.1016/j.ijscr.2024.109266
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Article ; Online: Impact of great saphenous vein ablation on healing and recurrence of venous leg ulcers in patients with post-thrombotic syndrome: A retrospective comparative study.

Bishara, Rashad A / Gaweesh, Ahmed / Taha, Wassila / Tolba, Mahmoud M / Shalhoub, Joseph

Journal of vascular surgery. Venous and lymphatic disorders

2024 Volume 12, Issue 3, Page(s) 101859

Abstract: Background: The optimal treatment approach for patients with active venous leg ulcers (VLUs) and post-thrombotic syndrome (PTS) associated with great saphenous vein (GSV) reflux remains unclear. To address this gap, we retrospectively compared the ... ...

Abstract	Background: The optimal treatment approach for patients with active venous leg ulcers (VLUs) and post-thrombotic syndrome (PTS) associated with great saphenous vein (GSV) reflux remains unclear. To address this gap, we retrospectively compared the outcomes of patients with post-thrombotic VLU with an intact GSV vs those with a stripped or ablated GSV. Methods: We retrospectively analyzed data from 48 patients with active VLUs and documented PTS, who were treated at a single center between January 2018 and December 2022. Clinical information, including ulcer photographs, was recorded in a prospectively maintained digital database at the initial and follow-up visits. Two patient groups-group A (with an intact GSV) and group B (with a stripped or ablated GSV)-were compared in terms of time to complete healing, proportion of ulcers achieving complete healing, and ulcer recurrence during the follow-up period. Results: There were no significant differences in age, gender, initial ulcer size, or ulcer duration between the two groups. All included patients had femoropopliteal post-thrombotic changes. Group A had significantly more completely healed ulcers (33 of 34 ulcers, 97%) compared with group B (10 of 14 ulcers, 71%) (P = .008). Group A also exhibited a significantly shorter time to complete ulcer healing (median: 42.5 days, interquartile range [IQR]: 65) compared with group B (median: 161 days, IQR: 530.5) (P = .0177), with a greater probability of ulcer healing (P = .0084). Long-term follow-up data were available for 45 of 48 patients (93.7%), with a mean duration of 39.6 months (range: 5.7-67.4 months). The proportion of ulcers that failed to heal or recurred during the follow-up period was significantly lower in group A (9 of 32 ulcers, 27%) compared with group B (11 of 13 ulcers, 85%) (P = .0009). In addition, in a subgroup analysis, patients with an intact but refluxing GSV (12 of 34) had a significantly shorter time to heal (median: 34 days, IQR: 57.25) (P = .0242), with a greater probability of ulcer healing (P = .0091) and significantly fewer recurrences (2 of 12, 16%) (P = .006) compared with group B. Conclusions: Our findings suggest that removal of the GSV through stripping or ablation in patients with post-thrombotic deep venous systems affecting the femoropopliteal segment may result in delayed ulcer healing and increased ulcer recurrence. Patients with an intact GSV had better outcomes, even when the refluxing GSV was left untreated. These findings emphasize the potential impact of GSV treatment on the management of VLUs in individuals with PTS. Further investigation is needed to validate these results and explore alternative therapeutic strategies to optimize outcomes for this patient population.
MeSH term(s)	Humans ; Ulcer ; Retrospective Studies ; Saphenous Vein/surgery ; Treatment Outcome ; Varicose Ulcer/therapy ; Postthrombotic Syndrome ; Venous Insufficiency/surgery ; Recurrence
Language	English
Publishing date	2024-03-04
Publishing country	United States
Document type	Journal Article
ISSN	2213-3348
ISSN (online)	2213-3348
DOI	10.1016/j.jvsv.2024.101859
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Article ; Online: Duplex-Guided Ipsilateral Antegrade Approach for Flush Superficial Femoral Artery Occlusion.

Saleh, Mahmoud Ismael / Ali, Haitham / Gamal, Walid M / Taha, Ashraf Gamal

Vascular and endovascular surgery

2023 Volume 57, Issue 6, Page(s) 574–582

Abstract: Objective: Recanalization of flush ostial superficial femoral artery (SFA) occlusion is a very challenging procedure. Using the ipsilateral antegrade approach in such lesions has some difficulties. This study aimed to assess the feasibility, efficacy, ... ...

Abstract	Objective: Recanalization of flush ostial superficial femoral artery (SFA) occlusion is a very challenging procedure. Using the ipsilateral antegrade approach in such lesions has some difficulties. This study aimed to assess the feasibility, efficacy, and outcomes of duplex-guided ipsilateral antegrade access for endovascular treatment of atherosclerotic flush occlusion of the SFA. Methods: This is a prospective two-center study that included chronic lower extremity ischemia patients with flush occlusion of SFA who underwent duplex-guided ipsilateral antegrade endovascular revascularization due to unfeasible contralateral femoral approach. Flush occlusions were preoperatively documented by duplex ultrasound and computed tomography angiography in all patients. The outcome measures were technical success, patency rates, perioperative morbidity and mortality, limb salvage, and amputation free survival rates. Results: Between April 2019 and March 2021, 49 patients were enrolled in the current study with a mean age of 63.7 ± 5.7 years. Diabetes was the most common risk factor and was found in 40 (81.6%) patients. Associated popliteal lesions were found in seven (14.3%) patients, while 10 (20.4%) patients had combined tibial disease. Selective stenting was done in nine (18.4%) patients. Technical success was achieved in 43 (87.8%) patients. All failures were due to inability to cross the lesion rather than failure to access the common femoral artery. All complications were minor and occurred in seven (14.3%) patients. Primary, assisted primary, and secondary patency rates were 63.9% ± 7.1%, 82.8% ± 5.6%, and 93.5% ± 3.7% at 12 months, respectively. The overall 12-month limb salvage and amputation free survival rates were 91.8% and 83.3% ± 5.4%, respectively. Conclusion: Duplex-guided ipsilateral antegrade femoral access is a feasible, safe, and effective endovascular treatment option for flush SFA occlusion when contralateral femoral access is not possible.
MeSH term(s)	Humans ; Middle Aged ; Aged ; Femoral Artery ; Treatment Outcome ; Prospective Studies ; Peripheral Arterial Disease/diagnostic imaging ; Peripheral Arterial Disease/therapy ; Ischemia/diagnostic imaging ; Ischemia/therapy ; Stents ; Vascular Patency ; Retrospective Studies
Language	English
Publishing date	2023-02-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	2076272-0
ISSN	1938-9116 ; 1538-5744
ISSN (online)	1938-9116
ISSN	1538-5744
DOI	10.1177/15385744221145250
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Article ; Online: Predictors of recurrence after paclitaxel drug-coated balloon use for treating femoropopliteal in-stent restenosis.

Taha, Ashraf Gamal / Saleh, Mahmoud Ismael / Ali, Haitham / Gamal, Walid M

Vascular

2023 , Page(s) 17085381231162123

Abstract: Objective: Paclitaxel drug-coated balloon (PDCB) angioplasty has been shown to be an effective treatment of in-stent restenosis (ISR) at the femoropopliteal (FP) arteries. Long-term studies, however, have shown a progressive decrease in the patency ... ...

Abstract	Objective: Paclitaxel drug-coated balloon (PDCB) angioplasty has been shown to be an effective treatment of in-stent restenosis (ISR) at the femoropopliteal (FP) arteries. Long-term studies, however, have shown a progressive decrease in the patency rates following PDCB. The aim of this study was to determine the predictors of stenosis recurrence after PDCB treatment of FP-ISR, and its immediate and mid-term outcomes. Methods: This prospective, non-randomized study included all chronic lower extremity ischemia patients of Rutherford class 3-6 who underwent PDCB angioplasty to treat >50% FP-ISR between June 2017 and December 2019. The primary endpoint was primary patency, defined as freedom from binary restenosis and freedom from clinically driven target lesion revascularization (CD-TLR) at 12 months. Secondary endpoints included 12-months freedom from CD-TLR and major adverse events (MAEs). Results: A total of 73 symptomatic chronic limb ischemia patients (73 limbs including 63 with limb threatening ischemia) underwent PDCB angioplasty of FP-ISR lesions (13.7% Tosaka class I, 54.8% class II, and 31.5% class III). The mean ISR lesion length was 121.8 ± 52.7 mm. Technical success was achieved in 70 (95.9%) patients. Kaplan-Meier estimate of the 12-months rates of primary patency and freedom from CD-TLR was 76.1% and 87.4%, respectively. At one year, MAEs occurred in eight patients (11.0%) including two deaths (2.7%), one major amputation (1.4%), and six (8.2%) surgical revascularizations. Multivariable analysis showed that Tosaka class III ISR (HR 4.51, CI: 1.31-15.53, Conclusions: PDCB is safe and effective treatment of FP-ISR lesions. Occlusive ISR lesions and reference vessel diameter were independently associated with recurrent ISR stenosis after PDCB treatment.
Language	English
Publishing date	2023-03-10
Publishing country	England
Document type	Journal Article
ZDB-ID	2137151-9
ISSN	1708-539X ; 1708-5381
ISSN (online)	1708-539X
ISSN	1708-5381
DOI	10.1177/17085381231162123
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Article ; Online: Oblivious network intrusion detection systems.

Sayed, Mahmoud AbdelHafeez / Taha, Mostafa

Scientific reports

2023 Volume 13, Issue 1, Page(s) 22308

Abstract: A main function of network intrusion detection systems (NIDSs) is to monitor network traffic and match it against rules. Oblivious NIDSs (O-NIDS) perform the same tasks of NIDSs but they use encrypted rules and produce encrypted results without being ... ...

Abstract	A main function of network intrusion detection systems (NIDSs) is to monitor network traffic and match it against rules. Oblivious NIDSs (O-NIDS) perform the same tasks of NIDSs but they use encrypted rules and produce encrypted results without being able to decrypt the rules or the results. Current implementations of O-NIDS suffer from slow searching speeds and/or lack of generality. In this paper, we present a generic approach to implement a privacy-preserving O-NIDS based on hybrid binary gates. We also present two resource-flexible algorithm bundles built upon the hybrid binary gates to perform the NIDS's essential tasks of direct matching and range matching as a proof of concept. Our approach utilizes a Homomorphic Encryption (HE) layer in an abstract fashion, which makes it implementable by many HE schemes compared to the state-of-the-art where the underlying HE scheme is a core part of the approach. This feature allowed the use of already-existing HE libraries that utilize parallelization techniques in GPUs for faster performance. We achieved a rule encryption time as low as 0.012% of the state of the art with only 0.047% of its encrypted rule size. Also, we achieved a rule-matching speed that is almost 20,000 times faster than the state of the art.
Language	English
Publishing date	2023-12-15
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-023-48475-w
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