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Michelon I, Vilbert M, Marinho AD, Castro CER, Dacoregio MI, Stecca C, Soares LR, Batista MV, Braga S, Saeed A, Cavalcante L. Trastuzumab deruxtecan in human epidermal growth factor receptor 2-positive breast cancer brain metastases: a systematic review and meta-analysis. ESMO Open 2024; 9:102233. [PMID: 38320430 PMCID: PMC10937193 DOI: 10.1016/j.esmoop.2024.102233] [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: 10/02/2023] [Revised: 11/16/2023] [Accepted: 12/22/2023] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Trastuzumab deruxtecan (T-DXd) has shown promising results in patients with breast cancer brain metastases (BCBMs). We conducted a systematic review and meta-analysis to evaluate the effectiveness and safety of T-DXd in the human epidermal growth factor receptor 2 (HER2)-positive BCBM population. PATIENTS AND METHODS We searched PubMed, Embase, and Cochrane Library databases as well as American Society of Clinical Oncology (ASCO), European Society for Medical Oncology (ESMO), and San Antonio Breast Cancer Symposium (SABCS) websites for clinical trials (CTs) and observational studies evaluating T-DXd in patients with HER2-positive BCBM. Heterogeneity was assessed with I2 statistics. Random effects models were used for all statistical analyses, which were carried out using R software (version 4.2.2). RESULTS Ten studies were included, six CTs (n = 189) and four observational studies (n = 130), with a total of 319 patients. The median progression-free survival was 15 months [95% confidence interval (CI) 13.9-16.1 months]. The objective response rate (ORR) was 61% (95% CI 52% to 70%), and the intracranial (IC)-ORR was 61% (95% CI 54% to 69%). No significant differences in ORR and IC-ORR were observed between CTs and observational studies (P = 0.31 and 0.58, respectively). The clinical benefit rate (CBR) was 80% (95% CI 52% to 94%), and the IC-CBR was 70% (95% CI 54% to 82%). The ORR was 68% (95% CI 57% to 77%) in the subgroup of patients with stable BMs and 60% (95% CI 48%-72%) in patients with active BM, with no significant difference between groups (P = 0.35). CONCLUSIONS Our systematic review and meta-analysis supports the IC activity of T-DXd in patients with stable BM and active BM. TRIAL REGISTRATION International Prospective Register of Systematic Reviews (PROSPERO) under the protocol number CRD42023422589.
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Affiliation(s)
- I Michelon
- Department of Medicine, Catholic University of Pelotas, Pelotas, Brazil
| | - M Vilbert
- Department of Medicine, Division of Hematology and Oncology, UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, USA.
| | - A D Marinho
- Department of Medicine, Federal University of the State of Rio de Janeiro, Rio de Janeiro
| | - C E R Castro
- Department of Medicine, University of Brasilia, Brasilia
| | - M I Dacoregio
- Department of Medicine, University of Centro Oeste, Guarapuava
| | - C Stecca
- Department of Medicine, Parana Oncology Center, Curitiba
| | - L R Soares
- Department of Medicine, Federal University of Goiás, Goiania, Brazil
| | - M V Batista
- Medical Oncology Department, Hospital Prof. Doctor Fernando Fonseca, Amadora; Haematology and Oncology Department, CUF Oncology, Sintra, Portugal
| | - S Braga
- Medical Oncology Department, Hospital Prof. Doctor Fernando Fonseca, Amadora; Haematology and Oncology Department, CUF Oncology, Sintra, Portugal
| | - A Saeed
- Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center (UPMC), Pittsburgh
| | - L Cavalcante
- Department of Medical Oncology and Hematology, University of Virginia Comprehensive Cancer Center, Charlottesville, USA.
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Hamad KH, Yasser AM, Nabil R, Tarek R, Hesham E, El-Telbany A, Saeed A, Selim SE, Abdelhamid AE. Nylon fiber waste as a prominent adsorbent for Congo red dye removal. Sci Rep 2024; 14:1088. [PMID: 38212330 PMCID: PMC10784493 DOI: 10.1038/s41598-023-51105-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 12/30/2023] [Indexed: 01/13/2024] Open
Abstract
In this research nylon fibers wastes (NF) were fabricated into porous sheet using a phase inversion technique to be utilized as an adsorbent materials for Congo red dye (CR). The fabricated sheet denoted as NS was characterized using FTIR and XRD. The surface studies of the adsorbent materials using SEM and BET analysis reveals a highly pores structure with an average pore volume 0.61 cc/g and BET surface area of 767 m2/g. The adsorption studies of fabricated NS were employed into CR at different parameters as pH, effect of time and dye concentration. The adsorption isotherm and kinetic studies were more fit to Langmuir and pseudo second order models. The maximum adsorption capacity qmax reached 188 mg/g with removal percentage of 95 for CR concentration of 400 mg/L at pH 6 and 0.025 g NS dose for 10 ml CR solution. The regeneration study reveals a prominent adsorption behavior of NS with removal % of 88.6 for CR (300 mg/L) after four adsorption desorption cycles. Effect of incorporation of NaonFil Clay to NS was studied using Response Surface Methodology (RSM) modeling and reveals that 98.4% removal of CR could be achieved by using 19.35% wt. of fiber with 8.2 g/L dose and zero clay, thus at a predetermined parameters studies of NanoFil clay embedded into NS, there are no significant effect for %R for CR.
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Affiliation(s)
- Kareem H Hamad
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Ahmed M Yasser
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Radwa Nabil
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Raneem Tarek
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Eslam Hesham
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Ahmed El-Telbany
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Ahmed Saeed
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt
| | - Salah E Selim
- Egyptian Academy for Engineering and Advanced Technology (EA&EAT) Affiliated to Ministry of Military Production, Cairo, Egypt.
| | - Ahmed E Abdelhamid
- Polymers and Pigments Department, National Research Centre, 33 El-Buhouth St., Dokki, 12622, Giza, Egypt
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Khan MA, Wang Y, Muhammad B, Uddin S, Saeed A, Khan D, Ali M, Saeed S, Kui JZ. Morpho-physiological and phytohormonal changes during the induction of adventitious root development stimulated by exogenous IBA application in Magnolia biondii Pamp. BRAZ J BIOL 2024. [DOI: 10.1590/1519-6984.255664] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Abstract Magnolia biondii Pamp is an important ornamental tree species widely grown and used as a rootstock in the propagation of different Magnolia varieties. In the current studies, anatomical, physiological and endogenous hormones were studied to check the effect of IBA 750 mg/L on the adventitious rooting and to provide theoretical and technical support for the propagation of Magnolia biondii Pamp through stem cuttings. Two thousand stem cuttings were prepared and divided into two groups i.e., IBA treated cuttings and water control. For the evaluation of antioxidant enzyme activities, and endogenous hormones levels, samples were collected on the day of planting and each 5th day and further steps were carried out in the laboratory according to the protocols and proper precautions. For the anatomical observations, samples were collected on the 13th, 15th, and 17th day for IBA treated cuttings while 21st, 23rd, and 25th day for control. Collected samples were preserved in the FAA solution and further observations were carried out in the laboratory. Anatomical observations showed that it took 13 days for the differentiation of root primordia to the appearance of young adventitious roots in IBA treated cuttings, while it took 21 days to develop primordia in the control. Antioxidant enzyme activities involved in ROS were significantly higher in the IBA treated cuttings compared to control. POD showed a peak on the 13th day before the emergence of roots in IBA treated cuttings while it showed a peak on the 21st day in the control. PPO showed a peak on the 21st day in the IBA treated cuttings while it showed a peak on the 29th day in the control. SOD showed a peak on the 17th day in IBA treated cuttings, while it showed a peak on the 25th day in the control. Exogenous application of IBA enhanced the endogenous IAA and GA3 levels compared to CK, while it reduced the levels of ABA continuously at the time of rooting and then increased gradually. Inclusively, our study suggests that IBA 750 mg/L is efficient for the rooting of Magnolia biondii Pamp cuttings, as it enhanced the process of antioxidant enzyme activities, endogenous hormones levels and reduced the time of root formation which is evident from the anatomical observations.
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Affiliation(s)
| | - Yi Wang
- Beijing Forestry University, China
| | | | - S. Uddin
- Beijing Forestry University, China
| | | | - D. Khan
- Beijing Forestry University, China
| | - M. Ali
- Beijing Forestry University, China
| | - S. Saeed
- Pakistan Forest Institute Peshawar, Pakistan
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Mohammed A, Gonzaga ER, Hasan MK, Saeed A, Friedland S, Bilal M, Sharma N, Jawaid S, Othman M, Khalaf MA, Hwang JH, Viana A, Singh S, Hayat M, Cosgrove ND, Jain D, Arain MA, Kadkhodayan KS, Yang D. Low delayed bleeding and high complete closure rate of mucosal defects with the novel through-the-scope dual-action tissue clip after endoscopic resection of large nonpedunculated colorectal lesions (with video). Gastrointest Endosc 2024; 99:83-90.e1. [PMID: 37481003 DOI: 10.1016/j.gie.2023.07.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/05/2023] [Accepted: 07/17/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND AND AIMS Complete closure after endoscopic resection of large nonpedunculated colorectal lesions (LNPCLs) can reduce delayed bleeding but is challenging with conventional through-the-scope (TTS) clips alone. The novel dual-action tissue (DAT) clip has clip arms that open and close independently of each other, facilitating tissue approximation. We aimed to evaluate the rate of complete closure and delayed bleeding with the DAT clip after endoscopic resection of LNPCLs. METHODS This was a multicenter prospective cohort study of all patients who underwent defect closure with the DAT clip after EMR or endoscopic submucosal dissection (ESD) of LNPCLs ≥20 mm from July 2022 to May 2023. Delayed bleeding was defined as a bleeding event requiring hospitalization, blood transfusion, or any intervention within 30 days after the procedure. Complete closure was defined as apposition of mucosal defect margins without visible submucosal areas <3 mm along the closure line. RESULTS One hundred seven patients (median age, 64 years; 42.5% women) underwent EMR (n = 63) or ESD (n = 44) of LNPCLs (median size, 40 mm; 74.8% right-sided colon) followed by defect closure. Complete closure was achieved in 96.3% (n = 103) with a mean of 1.4 ± .6 DAT clips and 2.9 ± 1.8 TTS clips. Delayed bleeding occurred in 1 patient (.9%) without requiring additional interventions. CONCLUSIONS The use of the DAT clip in conjunction with TTS clips achieved high complete defect closure after endoscopic resection of large LNPCLs and was associated with a .9% delayed bleeding rate. Future comparative trials and formal cost-analyses are needed to validate these findings. (Clinical trial registration number: NCT05852457.).
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Affiliation(s)
- Abdul Mohammed
- Division of Gastroenterology and Hepatology, AdventHealth, Orlando, Florida, USA
| | | | - Muhammad K Hasan
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | - Ahmed Saeed
- Kansas City Gastroenterology and Hepatology Physicians Group, Kansas City, Missouri, USA
| | - Shai Friedland
- Department of Gastroenterology, Stanford University School of Medicine, Stanford, California, USA; VA Palo Alto Health Care System, Palo Alto, California, USA
| | - Mohammad Bilal
- The University of Minnesota/Minneapolis VA Medical Center, Minneapolis, Minnesota, USA
| | - Neil Sharma
- Division of Interventional Oncology and Surgical Endoscopy (IOSE), Parkview Cancer Institute, Fort Wayne, Indiana, USA
| | - Salmaan Jawaid
- Division of Gastroenterology, Baylor College of Medicine, Houston, Texas, USA
| | - Mohamed Othman
- Division of Gastroenterology, Baylor College of Medicine, Houston, Texas, USA
| | - Mai Ahmed Khalaf
- Division of Gastroenterology, Baylor College of Medicine, Houston, Texas, USA
| | - Joo Ha Hwang
- Department of Gastroenterology, Stanford University School of Medicine, Stanford, California, USA
| | - Artur Viana
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | - Sanmeet Singh
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | - Maham Hayat
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | - Natalie D Cosgrove
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | - Deepanshu Jain
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | - Mustafa A Arain
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
| | | | - Dennis Yang
- Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA
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Wilson N, Abdallah M, Schulman AR, Mosko JD, Saeed A, Kothari S, Kaul V, Kothari TH, Phan J, Kumar A, Tofani C, Kim RE, Westanmo A, Moy BM, Dang F, Canakis A, Sharma N, Muniraj T, Azeem N, Bilal M. Outcomes of cold snare endoscopic mucosal resection of nonampullary duodenal adenomas ≥1 cm: a multicenter study. Gastrointest Endosc 2023:S0016-5107(23)03151-6. [PMID: 38092125 DOI: 10.1016/j.gie.2023.12.007] [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] [Received: 06/07/2023] [Revised: 11/18/2023] [Accepted: 12/06/2023] [Indexed: 04/23/2024]
Abstract
BACKGROUND AND AIMS Endoscopic mucosal resection (EMR) with use of electrocautery (conventional EMR) has historically been used to remove large duodenal adenomas; however, use of electrocautery can predispose to adverse events including delayed bleeding and perforation. Cold snare EMR (cs-EMR) has been shown to be safe and effective for removal of colon polyps, but data regarding its use in the duodenum are limited. The aim of this study was to evaluate the efficacy and safety of cs-EMR for nonampullary duodenal adenomas ≥1 cm. METHODS This was a multicenter retrospective study of patients with nonampullary duodenal adenomas ≥1 cm who underwent cs-EMR from October 2014 to May 2023. Patients who received any form of thermal therapy were excluded. Primary outcomes were technical success and rate of recurrent adenoma. Secondary outcomes were adverse events and predictors of recurrence. RESULTS A total of 125 patients underwent resection of 127 nonampullary duodenal adenomas with cs-EMR. Follow-up data were available in 89 cases (70.1%). The recurrent adenoma rate was 31.5% (n = 28). Adverse events occurred in 3.9% (n = 5), with 4 cases of immediate bleeding (3.1%) and 1 case of delayed bleeding (.8%). There were no cases of perforation. The presence of high-grade dysplasia was found to be an independent predictor of recurrence (odds ratio, 10.9 [95% confidence interval, 1.1-102.1]; P = .036). CONCLUSIONS This retrospective multicenter study demonstrates that cs-EMR for nonampullary duodenal adenomas is safe and technically feasible with an acceptable recurrence rate. Future prospective studies are needed to directly compare outcomes of cs-EMR with conventional and underwater EMR.
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Affiliation(s)
- Natalie Wilson
- Department of Internal Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Mohamed Abdallah
- Division of Gastroenterology and Hepatology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Allison R Schulman
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA; Department of Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Jeffrey D Mosko
- Centre for Therapeutic Endoscopy and Endoscopic Oncology, St Michael's Hospital, Toronto, Ontario, Canada; Division of Gastroenterology and Hepatology, University of Toronto, Toronto, Ontario, Canada
| | - Ahmed Saeed
- Division of Gastroenterology and Hepatology, HCA Midwest Health, Kansas City, Missouri, USA
| | - Shivangi Kothari
- Division of Gastroenterology and Hepatology, University of Rochester Medical Center, Rochester, New York, USA
| | - Vivek Kaul
- Division of Gastroenterology and Hepatology, University of Rochester Medical Center, Rochester, New York, USA
| | - Truptesh H Kothari
- Division of Gastroenterology and Hepatology, University of Rochester Medical Center, Rochester, New York, USA
| | - Jennifer Phan
- Division of Gastroenterology, University of Southern California, Los Angeles, California, USA
| | - Anand Kumar
- Division of Gastroenterology and Hepatology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Christina Tofani
- Division of Gastroenterology and Hepatology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Raymond E Kim
- Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Anders Westanmo
- Department of Pharmacy, Minneapolis Veteran Affairs Medical Center, Minneapolis, Minnesota, USA
| | - Benjamin M Moy
- University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Frances Dang
- Division of Gastroenterology and Hepatology, University of Toronto, Toronto, Ontario, Canada
| | - Andrew Canakis
- Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Neil Sharma
- Division of Interventional Oncology and Surgical Endoscopy (IOSE), Parkview Cancer Institute, Fort Wayne, Indiana, USA
| | | | - Nabeel Azeem
- Division of Gastroenterology and Hepatology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Mohammad Bilal
- Division of Gastroenterology and Hepatology, Minneapolis Veteran Affairs Medical Center, Minneapolis, Minnesota, USA
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Hussain N, Aneela S, Aqsa N, Saeed A, Aziz T, Majid A, Abdulhakeem SA, Al-Abbas NS, Shaer NA, Barqawi AA, Alghamdi S, Shakoori A, Alshareef SA. Screening of IL-22 first and second introns and FOXP3 second exon for SNPs and mutations with potential role in the susceptibility of SLE in selected population. Eur Rev Med Pharmacol Sci 2023; 27:8628-8638. [PMID: 37782178 DOI: 10.26355/eurrev_202309_33787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
OBJECTIVE The main objective of performing this study was the mutational analysis of Forkhead box family member (FoxP3) and Interleukin-22 (IL-22) genes and their associations with systemic lupus erythematosus (SLE). MATERIALS AND METHODS A total of sixty blood samples were collected from SLE patients from different hospitals in Lahore. Proforma was based on American College of Rheumatology (ACR) criteria. The total time for this research was one year (2018-2019). DNA was extracted, and FoxP3 and IL-22 genes were polymerized through PCR and further sequenced through the Sanger Sequencing method. Chromas version 2.6.6 was used for the similarity index of sequences. NG_060763 and NG_007392.1 were used as Reference Sequences of IL-22 and FoxP3 genes, respectively. RESULTS Three already identified Single Nucleotide Polymorphisms (SNPs) in the IL-22 gene i.e., rs2227491, rs2227485, and rs2227513, were confirmed in the sequencing results of SLE patients. Results showed that there were nine novel mutations (27.27%) in the case of the IL-22 gene in the studied genotyped samples. These SNPs had remarkably increased allele T frequency in rs2227485 and allele C frequency in rs2227491 and rs2227513. On the other hand, in the case of FoxP3 gene exon 2, there was an addition of T at position 10 in the intronic portion, thus not involved in the progression of the disease. CONCLUSIONS The importance of cytokine-mediated signaling pathways, such as the IL-22 gene, is thus established. Novel variants in the IL-22 gene likely contributed significantly to the development of this autoimmune disorder. The current study found that the dysregulation of the inflammatory markers in SLE is not related to the FoxP3 gene, even though FoxP3 is implicated in the tolerance process.
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Affiliation(s)
- N Hussain
- Institute of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan.
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Khafagy W, ElBassioune W, Rady M, Farouk E, Elhelw E, Saeed A, Mahmoud A, Abuelmatti H, Elsheikh A, Mahmoud M, Hussein M, Zaky A, Abdeltawab A, Ali S, Altoraky M, Hegazy M, Almorsy A, Alghazaly M, Rehan M, Elnady E, Khater S, Mahmoud A, Elsayed A, Deif H. A new promising approach to urodynamic stress urinary incontinence care can help menopausal women. Prz Menopauzalny 2023; 22:121-125. [PMID: 37829269 PMCID: PMC10566331 DOI: 10.5114/pm.2023.131058] [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] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 10/15/2022] [Indexed: 10/14/2023]
Abstract
Introduction The goal of this study is to evaluate the effectiveness of single-incision mini-sling in the surgical treatment of postmenopausal urodynamic stress urinary incontinence (SUI) compared to the standard trans-obturator mid-urethral sling. Material and methods This prospective study was carried out in two tertiary centres; Al-Azhar University Maternity & Urology Hospitals. A total of 120 postmenopausal women with urodynamic SUI were randomized to undergo either single-incision mini-sling (n = 60) or standard trans-obturator mid-urethral sling procedure (n = 60) from May 2019 until Oct 2021. Main outcome measures: efficacy was evaluated utilizing objective cure rate (cough stress test) and subjective cure rate (Sandvik incontinence severity index and International Consultations on Incontinence Questionnaire - Short Form), intraoperative and postoperative complications, and postoperative pain (using a visual analogue scale). Results The single-incision mini-sling (SIMS) and transobturator tape (TOT) groups had no statistically significant difference in subjective and objective cure rates (p > 0.05). Compared with the transvaginal tape O group, patients in the SIMS group had significantly less postoperative pain, shorter operative duration, and less intraoperative blood loss (all p-values < 0.05). No significant difference in perioperative complications was observed between both groups. Conclusions Single-incision mini-sling was superior to TOT in postmenopausal as SIMS is of similar effectiveness, more safe and minimally invasive with earlier ambulance.
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Affiliation(s)
- Wael Khafagy
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Walaa ElBassioune
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Mahmoud Rady
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Elmetwally Farouk
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ehab Elhelw
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Saeed
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Mahmoud
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Hamada Abuelmatti
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Elsheikh
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Mohamed Mahmoud
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Mohammed Hussein
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Zaky
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Abdeltawab
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Soliman Ali
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Muhammad Altoraky
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Mahmoud Hegazy
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Almorsy
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Moatazza Alghazaly
- Department of Obstetrics and Gynaecology, Al-Azhar University, Al-Azhar, Egypt
| | - Mohamed Rehan
- Department of Urology, Al-Azhar University, Al-Azhar, Egypt
| | - Esam Elnady
- Department of Urology, Al-Azhar University, Al-Azhar, Egypt
| | - Saed Khater
- Department of Urology, Al-Azhar University, Al-Azhar, Egypt
| | - Alaa Mahmoud
- Department of Urology, Al-Azhar University, Al-Azhar, Egypt
| | - Ahmed Elsayed
- Department of Urology, Al-Azhar University, Al-Azhar, Egypt
| | - Hazem Deif
- Department of Urology, Al-Azhar University, Al-Azhar, Egypt
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Tojjari A, Saeed A, Singh M, Cavalcante L, Sahin IH, Saeed A. A Comprehensive Review on Cancer Vaccines and Vaccine Strategies in Hepatocellular Carcinoma. Vaccines (Basel) 2023; 11:1357. [PMID: 37631925 PMCID: PMC10459477 DOI: 10.3390/vaccines11081357] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 07/05/2023] [Revised: 08/04/2023] [Accepted: 08/09/2023] [Indexed: 08/29/2023] Open
Abstract
HCC, the most prevalent form of primary liver cancer, presents a substantial global health challenge due to its high mortality and limited therapeutic options. This review delves into the potential of cancer vaccines as a novel therapeutic avenue for HCC. We examine the various categories of cancer vaccines, including peptide-based, dendritic cell-based, viral vector-based, DNA, and mRNA vaccines, and their potential application in HCC management. This review also addresses the inherent challenges in vaccine development, such as tumor heterogeneity and the need for identifying tumor-specific antigens. We underscore the role of cancer vaccines in reshaping the immune environment within HCC, fostering durable immune memory, and their potential in combination therapies. The review also evaluates clinical trials and emphasizes the necessity for more extensive research to optimize vaccine design and patient selection criteria. We conclude with future perspectives, highlighting the significance of personalized therapies, innovative antigen delivery platforms, immune modulatory agents, and predictive biomarkers in revolutionizing HCC treatment. Simple Summary: This review explores the potential of cancer vaccines as a promising therapeutic strategy for hepatocellular carcinoma (HCC), a prevalent and deadly liver cancer. The authors discuss various types of cancer vaccines, their challenges, and their role in modulating the immune response within HCC. They also highlight clinical trials and future perspectives, emphasizing the importance of personalized therapies, novel antigen delivery platforms, and predictive biomarkers. The findings from this research could significantly impact the research community by providing a comprehensive understanding of the current state of cancer vaccines for HCC, thereby guiding future research and potentially transforming HCC treatment strategies.
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Affiliation(s)
- Alireza Tojjari
- Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15213, USA; (A.T.); (M.S.); (I.H.S.)
| | - Ahmed Saeed
- Sarah Cannon Cancer Institute, HCA Midwest Health, Kansas City, MO 64131, USA;
| | - Meghana Singh
- Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15213, USA; (A.T.); (M.S.); (I.H.S.)
| | | | - Ibrahim Halil Sahin
- Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15213, USA; (A.T.); (M.S.); (I.H.S.)
- UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA
| | - Anwaar Saeed
- Department of Medicine, Division of Hematology & Oncology, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15213, USA; (A.T.); (M.S.); (I.H.S.)
- UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA
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9
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Fathy A, Gnambodoe-Capochichi M, Sabry YM, Anwar M, Ghoname AO, Saeed A, Leprince-Wang Y, Khalil D, Bourouina T. Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants. Sensors (Basel) 2023; 23:6343. [PMID: 37514637 PMCID: PMC10383062 DOI: 10.3390/s23146343] [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] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/03/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
Gas sensors that can measure multiple pollutants simultaneously are highly desirable for on-site air pollution monitoring at various scales, both indoor and outdoor. Herein, we introduce a low-cost multi-parameter gas analyzer capable of monitoring multiple gaseous pollutants simultaneously, thus allowing for true analytical measurement. It is a spectral sensor consisting of a Fourier-transform infrared (FTIR) gas analyzer based on a mid-infrared (MIR) spectrometer. The sensor is as small as 7 × 5 × 2.5 cm3. It was deployed in an open-path configuration within a district-scale climatic chamber (Sense City, Marne-la-Vallée, France) with a volume of 20 × 20 × 8 m3. The setup included a transmitter and a receiver separated by 38 m to enable representative measurements of the entire district domain. We used a car inside the climatic chamber, turning the engine on and off to create time sequences of a pollution source. The results showed that carbon dioxide (CO2) and water vapor (H2O) were accurately monitored using the spectral sensor, with agreement with the reference analyzers used to record the pollution levels near the car exhaust. Furthermore, the lower detection limits of CO, NO2 and NO were assessed, demonstrating the capability of the sensor to detect these pollutants. Additionally, a preliminary evaluation of the potential of the spectral sensor to screen multiple volatile organic compounds (VOCs) was conducted at the laboratory scale. Overall, the results demonstrated the potential of the proposed multi-parameter spectral gas sensor in on-site gaseous pollution monitoring.
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Affiliation(s)
- Alaa Fathy
- ESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, France
- Si-Ware Systems, Cairo 11361, Egypt
- Faculty of Engineering, Ain-Shams University, Cairo 11535, Egypt
| | | | - Yasser M Sabry
- Si-Ware Systems, Cairo 11361, Egypt
- Faculty of Engineering, Ain-Shams University, Cairo 11535, Egypt
| | | | - Amr O Ghoname
- Si-Ware Systems, Cairo 11361, Egypt
- Faculty of Engineering, Ain-Shams University, Cairo 11535, Egypt
| | | | | | - Diaa Khalil
- Si-Ware Systems, Cairo 11361, Egypt
- Faculty of Engineering, Ain-Shams University, Cairo 11535, Egypt
| | - Tarik Bourouina
- ESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, France
- CINTRA, IRL 3288 CNRS-NTU-THALES, Nanyang Technological University, Singapore 637553, Singapore
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10
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Elsayad A, Khafagy W, ElBassioune W, Rady M, Abdeltawab A, Altoraky M, Hegazy M, Ayad W, Alghazaly M, Elshorbagy A, Almorsy AS, Saeed A, Farouk E, Elhelw E, Abuelmatti H, Elkadosi MEH. A paradigm of higher success rate of intracytoplasmic sperm injection - preovulatory human chorionic gonadotropin-day serum oestradiol. Prz Menopauzalny 2023; 22:83-86. [PMID: 37674930 PMCID: PMC10477759 DOI: 10.5114/pm.2023.127964] [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] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 09/07/2022] [Indexed: 09/08/2023]
Abstract
Introduction The aim of the study is to evaluate the correlation between the level of serum oestradiol (E2) on the day of human chorionic gonadotropin (hCG-day) administration and successful intracytoplasmic sperm injection (ICSI) outcome. Material and methods This prospective study was performed during the period from January 2019 to September 2021, at Zagazig Obstetrics and Gynecology Department, and Al-Azhar Obstetrics and Gynecology Department, and private ART centers. One hundred and fifty women attending the infertility clinic for ICSI cycles. All women were divided into 5 groups according to the serum E2 level on the day of hCG administration: Group A - serum E2 < 1000 pg/ml; Group B - serum E2 1000 to < 2000 pg/ml; Group C - serum E2 2000 to < 3000 pg/ml;Group D - serum E2 3000 to < 4000 pg/ml; Group E - serum E2 ≥ 4000 pg/ml. Results The highest fertilization rate (58.1%) was among women with E2 ≥ 4000 pg/ml, while the lowest (37%) was in women with E2 1000 to < 2000 pg/ml. Also, the highest pregnancy rate (21.5%) was among women with E2 > 4000 pg/ml, while the lowest (5.3%) was in women with E2 < 1000 pg/ml. In the current study the median serum E2 level on the day of hCG administration was highly significant in women who became pregnant when compared to women who did not. The best cut-off value of serum E2 at hCG administration was ≥ 3682.3 pg/ml. Conclusions this study suggests that the optimal range of E2 level for achieving a successful pregnancy is > 4000 pg/ml.
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Affiliation(s)
- Ahmed Elsayad
- Department of Obstetrics and Gynaecology, Zagazig University, Egypt
| | - Wael Khafagy
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Walaa ElBassioune
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Mahmoud Rady
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Ahmed Abdeltawab
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Muhammad Altoraky
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Mahmoud Hegazy
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Waled Ayad
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | | | - Ahmed Elshorbagy
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | | | - Ahmed Saeed
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Elmetwally Farouk
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Ehab Elhelw
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
| | - Hamada Abuelmatti
- Department of Obstetrics and Gynaecology, Al-Azhar University, Egypt
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11
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Saif OM, Zekry A, Shaker A, Abouelatta M, Alanazi TI, Saeed A. Design and Optimization of a Self-Protected Thin Film c-Si Solar Cell against Reverse Bias. Materials (Basel) 2023; 16:2511. [PMID: 36984391 PMCID: PMC10059038 DOI: 10.3390/ma16062511] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Current mismatch due to solar cell failure or partial shading of solar panels may cause a reverse biasing of solar cells inside a photovoltaic (PV) module. The reverse-biased cells consume power instead of generating it, resulting in hot spots. To protect the solar cell against the reverse current, we introduce a novel design of a self-protected thin-film crystalline silicon (c-Si) solar cell using TCAD simulation. The proposed device achieves two distinct functions where it acts as a regular solar cell at forward bias while it performs as a backward diode upon reverse biasing. The ON-state voltage (VON) of the backward equivalent diode is found to be 0.062 V, which is lower than the value for the Schottky diode usually used as a protective element in a string of solar cells. Furthermore, enhancement techniques to improve the electrical and optical characteristics of the self-protected device are investigated. The proposed solar cell is enhanced by optimizing different design parameters, such as the doping concentration and the layers' thicknesses. The enhanced cell structure shows an improvement in the short-circuit current density (JSC) and the open-circuit voltage (VOC), and thus an increased power conversion efficiency (PCE) while the VON is increased due to an increase of the JSC. Moreover, the simulation results depict that, by the introduction of an antireflection coating (ARC) layer, the external quantum efficiency (EQE) is enhanced and the PCE is boosted to 22.43%. Although the inclusion of ARC results in increasing VON, it is still lower than the value of VON for the Schottky diode encountered in current protection technology.
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Affiliation(s)
- Omar M. Saif
- Department of Electronics and Communications, Faculty of Engineering, Ain Shams University, Cairo 11566, Egypt
| | - Abdelhalim Zekry
- Department of Electronics and Communications, Faculty of Engineering, Ain Shams University, Cairo 11566, Egypt
| | - Ahmed Shaker
- Engineering Physics and Mathematics Department, Faculty of Engineering, Ain Shams University, Cairo 11566, Egypt
| | - Mohammed Abouelatta
- Department of Electronics and Communications, Faculty of Engineering, Ain Shams University, Cairo 11566, Egypt
| | - Tarek I. Alanazi
- Department of Physics, College of Science, Northern Border University, Arar 73222, Saudi Arabia
| | - Ahmed Saeed
- Electrical Engineering Department, Future University in Egypt, Cairo 11835, Egypt
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12
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Salem MS, Zekry A, Abouelatta M, Shaker A, Salem MS, Gontrand C, Saeed A. Boosting the Electrostatic MEMS Converter Output Power by Applying Three Effective Performance-Enhancing Techniques. Micromachines (Basel) 2023; 14:485. [PMID: 36838185 PMCID: PMC9964943 DOI: 10.3390/mi14020485] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/05/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
This current study aims to enhance the electrostatic MEMS converter performance mainly by boosting its output power. Three different techniques are applied to accomplish such performance enhancement. Firstly, the power is boosted by scaling up the technology of the converter CMOS accompanied circuit, the power conditioning, and power controlling circuits, from 0.35 µm to 0.6 µm CMOS technology. As the converter area is in the range of mm2, there are no restrictions concerning the scaling up of the accompanied converter CMOS circuits. As a result, the maximum voltage of the system for harvesting energy, Vmax, which is the most effective system constraint that greatly affects the converter's output power, increases from 8 V to 30 V. The output power of the designed and simulated converter based on the 0.6 µm technology increases from 2.1 mW to 4.5 mW. Secondly, the converter power increases by optimizing its technological parameters, the converter thickness and the converter finger width and length. Such optimization causes the converter output power to increase from 4.5 mW to 11.2 mW. Finally, the converter structure is optimized to maximize its finger length by using its wasted shuttle mass area which does not contribute to its capacitances and output power. The proposed structure increases the converter output power from 11.2 mW to 14.29 mW. Thus, the three applied performance enhancement techniques boosted the converter output power by 12.19 mW, which is a considerable enhancement in the converter performance. All simulations are carried out using COMSOL Multiphysics 5.4.
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Affiliation(s)
- Mona S. Salem
- Electronics and Communications Engineering Department, Faculty of Engineering, Ain Shams University (ASU), Cairo 11566, Egypt
| | - Abdelhalim Zekry
- Electronics and Communications Engineering Department, Faculty of Engineering, Ain Shams University (ASU), Cairo 11566, Egypt
| | - Mohamed Abouelatta
- Electronics and Communications Engineering Department, Faculty of Engineering, Ain Shams University (ASU), Cairo 11566, Egypt
| | - Ahmed Shaker
- Physics and Mathematics Engineering Department, Faculty of Engineering, Ain Shams University (ASU), Cairo 11566, Egypt
| | - Marwa S. Salem
- Department of Computer Engineering, Computer Science and Engineering College, University of Ha’il, Ha’il 55211, Saudi Arabia
| | - Christian Gontrand
- National Institute of Applied Sciences of Lyon (INSA Lyon), 69621 Lyon, France
- IEP, INSA—Fès, Université Euro-Méditerranéenne de Fès, Fès 30120, Morocco
| | - Ahmed Saeed
- Electrical Engineering Department, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
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13
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Abd-AlNabi R, Saeed A, Sharawy M, Elsayed M. Assessment of Macular Perfusion in Normal and Myopic eyes by Optical Coherence Tomography Angiography. Benha Journal of Applied Sciences 2023; 0:0-0. [DOI: 10.21608/bjas.2023.183476.1015] [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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14
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Salem MS, Shaker A, Abouelatta M, Saeed A. Full Optoelectronic Simulation of Lead-Free Perovskite/Organic Tandem Solar Cells. Polymers (Basel) 2023; 15:polym15030784. [PMID: 36772085 PMCID: PMC9918906 DOI: 10.3390/polym15030784] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 02/08/2023] Open
Abstract
Organic and perovskite semiconductor materials are considered an interesting combination thanks to their similar processing technologies and band gap tunability. Here, we present the design and analysis of perovskite/organic tandem solar cells (TSCs) by using a full optoelectronic simulator (SETFOS). A wide band gap lead-free ASnI2Br perovskite top subcell is utilized in conjunction with a narrow band gap DPPEZnP-TBO:PC61BM heterojunction organic bottom subcell to form the tandem configuration. The top and bottom cells were designed according to previous experimental work keeping the same materials and physical parameters. The calibration of the two cells regarding simulation and experimental data shows very good agreement, implying the validation of the simulation process. Accordingly, the two cells are combined to develop a 2T tandem cell. Further, upon optimizing the thickness of the front and rear subcells, a current matching condition is satisfied for which the proposed perovskite/organic TSC achieves an efficiency of 13.32%, Jsc of 13.74 mA/cm2, and Voc of 1.486 V. On the other hand, when optimizing the tandem by utilizing full optoelectronic simulation, the tandem shows a higher efficiency of about 14%, although it achieves a decreased Jsc of 12.27 mA/cm2. The study shows that the efficiency can be further improved when concurrently optimizing the various tandem layers by global optimization routines. Furthermore, the impact of defects is demonstrated to highlight other possible routes to improve efficiency. The current simulation study can provide a physical understanding and potential directions for further efficiency improvement for lead-free perovskite/organic TSC.
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Affiliation(s)
- Marwa S. Salem
- Department of Computer Engineering, College of Computer Science and Engineering, University of Ha’il, Ha’il 55211, Saudi Arabia
- Department of Electrical Communication and Electronics Systems Engineering, Faculty of Engineering, Modern Science and Arts University (MSA), Cairo 12556, Egypt
| | - Ahmed Shaker
- Engineering Physics and Mathematics Department, Faculty of Engineering, Ain Shams University, Cairo 11517, Egypt
- Correspondence:
| | - Mohamed Abouelatta
- Electronics and Electrical Communications Department, Faculty of Engineering, Ain Shams University, Cairo 11517, Egypt
| | - Ahmed Saeed
- Electrical Engineering Department, Future University in Egypt, Cairo 11835, Egypt
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15
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Abd El Basset A, Saeed A, Hassan A, El Badry N. Role of Diffusion Weighted MRI, Sonography in Characterization of Thyroid Nodules Guided by TIRADS Classification. Egyptian Journal of Medical Research 2023; 4:69-82. [DOI: 10.21608/ejmr.2022.130559.1218] [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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16
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Saeed A, Najm HM, Hassan A, Sabri MMS, Qaidi S, Mashaan NS, Ansari K. Properties and Applications of Geopolymer Composites: A Review Study of Mechanical and Microstructural Properties. Materials (Basel) 2022; 15:ma15228250. [PMID: 36431736 PMCID: PMC9696611 DOI: 10.3390/ma15228250] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 10/13/2022] [Accepted: 11/17/2022] [Indexed: 05/27/2023]
Abstract
Portland cement (PC) is considered the most energy-intensive building material and contributes to around 10% of global warming. It exacerbates global warming and climate change, which have a harmful environmental impact. Efforts are being made to produce sustainable and green concrete as an alternative to PC concrete. As a result, developing a more sustainable strategy and eco-friendly materials to replace ordinary concrete has become critical. Many studies on geopolymer concrete, which has equal or even superior durability and strength compared to traditional concrete, have been conducted for this purpose by many researchers. Geopolymer concrete (GPC) has been developed as a possible new construction material for replacing conventional concrete, offering a clean technological choice for long-term growth. Over the last few decades, geopolymer concrete has been investigated as a feasible green construction material that can reduce CO2 emissions because it uses industrial wastes as raw materials. GPC has proven effective for structural applications due to its workability and analogical strength compared to standard cement concrete. This review article discusses the engineering properties and microstructure of GPC and shows its merits in construction applications with some guidelines and suggestions recommended for both the academic community and the industrial sector. This literature review also demonstrates that the mechanical properties of GPC are comparable and even sometimes better than those of PC concrete. Moreover, the microstructure of GPC is significantly different from that of PC concrete microstructure and can be affected by many factors.
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Affiliation(s)
- Ahmed Saeed
- Department of Civil Engineering, Southeast University, Nanjing 211189, China
| | - Hadee Mohammed Najm
- Department of Civil Engineering, Zakir Husain Engineering College, Aligarh Muslim University, Aligarh 202002, India
| | - Amer Hassan
- Department of Civil Engineering, Zakir Husain Engineering College, Aligarh Muslim University, Aligarh 202002, India
| | | | - Shaker Qaidi
- Department of Civil Engineering, College of Engineering, University of Duhok, Duhok 42001, Iraq
- Department of Civil Engineering, College of Engineering, Nawroz University, Duhok 42001, Iraq
| | - Nuha S. Mashaan
- Faculty of Science and Engineering, School of Civil and Mechanical Engineering, Curtin University, Bentley, WA 6102, Australia
| | - Khalid Ansari
- Department of Civil Engineering, Yashwantrao Chavan College of Engineering, Nagpur 441110, India
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17
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Arif M, Shabir G, Ejaz SA, Saeed A, Khan SU, Lecka J, Sévigny J, Iqbal J. Diacylhydrazine Derivatives of 2-(5-(Pyridin-3-yl)-2H-Tetrazol-2-yl)Acetohydrazide and 2-(5-(Pyridin-4-yl)-2H-Tetrazol-2-yl)Acetohydrazide as Potential Inhibitors of Nucleotide Pyrophosphatase. Russ J Bioorg Chem 2022. [DOI: 10.1134/s1068162022050053] [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: 11/23/2022]
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18
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Ubels S, Verstegen M, Klarenbeek B, Bouwense S, van Berge Henegouwen M, Daams F, van Det MJ, Griffiths EA, Haveman JW, Heisterkamp J, Koshy R, Nieuwenhuijzen G, Polat F, Siersema PD, Singh P, Wijnhoven B, Hannink G, van Workum F, Rosman C, Matthée E, Slootmans CAM, Ultee G, Schouten J, Gisbertz SS, Eshuis WJ, Kalff MC, Feenstra ML, van der Peet DL, Stam WT, van Etten B, Poelmann F, Vuurberg N, van den Berg JW, Martijnse IS, Matthijsen RM, Luyer M, Curvers W, Nieuwenhuijzen T, Taselaar AE, Kouwenhoven EA, Lubbers M, Sosef M, Lecot F, Geraedts TCM, van Esser S, Dekker JWT, van den Wildenberg F, Kelder W, Lubbers M, Baas PC, de Haas JWA, Hartgrink HH, Bahadoer RR, van Sandick JW, Hartemink KJ, Veenhof X, Stockmann H, Gorgec B, Weeder P, Wiezer MJ, Genders CMS, Belt E, Blomberg B, van Duijvendijk P, Claassen L, Reetz D, Steenvoorde P, Mastboom W, Klein Ganseij HJ, van Dalsen AD, Joldersma A, Zwakman M, Groenendijk RPR, Montazeri M, Mercer S, Knight B, van Boxel G, McGregor RJ, Skipworth RJE, Frattini C, Bradley A, Nilsson M, Hayami M, Huang B, Bundred J, Evans R, Grimminger PP, van der Sluis PC, Eren U, Saunders J, Theophilidou E, Khanzada Z, Elliott JA, Ponten J, King S, Reynolds JV, Sgromo B, Akbari K, Shalaby S, Gutschow CA, Schmidt H, Vetter D, Moorthy K, Ibrahim MAH, Christodoulidis G, Räsänen JV, Kauppi J, Söderström H, Manatakis DK, Korkolis DP, Balalis D, Rompu A, Alkhaffaf B, Alasmar M, Arebi M, Piessen G, Nuytens F, Degisors S, Ahmed A, Boddy A, Gandhi S, Fashina O, Van Daele E, Pattyn P, Robb WB, Arumugasamy M, Al Azzawi M, Whooley J, Colak E, Aybar E, Sari AC, Uyanik MS, Ciftci AB, Sayyed R, Ayub B, Murtaza G, Saeed A, Ramesh P, Charalabopoulos A, Liakakos T, Schizas D, Baili E, Kapelouzou A, Valmasoni M, Pierobon ES, Capovilla G, Merigliano S, Silviu C, Rodica B, Florin A, Cristian Gelu R, Petre H, Guevara Castro R, Salcedo AF, Negoi I, Negoita VM, Ciubotaru C, Stoica B, Hostiuc S, Colucci N, Mönig SP, Wassmer CH, Meyer J, Takeda FR, Aissar Sallum RA, Ribeiro U, Cecconello I, Toledo E, Trugeda MS, Fernández MJ, Gil C, Castanedo S, Isik A, Kurnaz E, Videira JF, Peyroteo M, Canotilho R, Weindelmayer J, Giacopuzzi S, De Pasqual CA, Bruna M, Mingol F, Vaque J, Pérez C, Phillips AW, Chmelo J, Brown J, Han LE, Gossage JA, Davies AR, Baker CR, Kelly M, Saad M, Bernardi D, Bonavina L, Asti E, Riva C, Scaramuzzo R, Elhadi M, Abdelkarem Ahmed H, Elhadi A, Elnagar FA, Msherghi AAA, Wills V, Campbell C, Perez Cerdeira M, Whiting S, Merrett N, Das A, Apostolou C, Lorenzo A, Sousa F, Adelino Barbosa J, Devezas V, Barbosa E, Fernandes C, Smith G, Li EY, Bhimani N, Chan P, Kotecha K, Hii MW, Ward SM, Johnson M, Read M, Chong L, Hollands MJ, Allaway M, Richardson A, Johnston E, Chen AZL, Kanhere H, Prasad S, McQuillan P, Surman T, Trochsler MI, Schofield WA, Ahmed SK, Reid JL, Harris MC, Gananadha S, Farrant J, Rodrigues N, Fergusson J, Hindmarsh A, Afzal Z, Safranek P, Sujendran V, Rooney S, Loureiro C, Leturio Fernández S, Díez del Val I, Jaunoo S, Kennedy L, Hussain A, Theodorou D, Triantafyllou T, Theodoropoulos C, Palyvou T, Elhadi M, Abdullah Ben Taher F, Ekheel M, Msherghi AAA. Severity of oEsophageal Anastomotic Leak in patients after oesophagectomy: the SEAL score. Br J Surg 2022. [DOI: https://doi.org/10.1093/bjs/znac226] [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: 12/24/2022]
Abstract
Abstract
Background
Anastomotic leak (AL) is a common but severe complication after oesophagectomy. It is unknown how to determine the severity of AL objectively at diagnosis. Determining leak severity may guide treatment decisions and improve future research. This study aimed to identify leak-related prognostic factors for mortality, and to develop a Severity of oEsophageal Anastomotic Leak (SEAL) score.
Methods
This international, retrospective cohort study in 71 centres worldwide included patients with AL after oesophagectomy between 2011 and 2019. The primary endpoint was 90-day mortality. Leak-related prognostic factors were identified after adjusting for confounders and were included in multivariable logistic regression to develop the SEAL score. Four classes of leak severity (mild, moderate, severe, and critical) were defined based on the risk of 90-day mortality, and the score was validated internally.
Results
Some 1509 patients with AL were included and the 90-day mortality rate was 11.7 per cent. Twelve leak-related prognostic factors were included in the SEAL score. The score showed good calibration and discrimination (c-index 0.77, 95 per cent c.i. 0.73 to 0.81). Higher classes of leak severity graded by the SEAL score were associated with a significant increase in duration of ICU stay, healing time, Comprehensive Complication Index score, and Esophagectomy Complications Consensus Group classification.
Conclusion
The SEAL score grades leak severity into four classes by combining 12 leak-related predictors and can be used to the assess severity of AL after oesophagectomy.
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Affiliation(s)
- Sander Ubels
- Department of Surgery, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , the Netherlands
| | - Moniek Verstegen
- Department of Surgery, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , the Netherlands
| | - Bastiaan Klarenbeek
- Department of Surgery, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , the Netherlands
| | - Stefan Bouwense
- Department of Surgery, Maastricht University Medical Centre+ , Maastricht , the Netherlands
| | - Mark van Berge Henegouwen
- Department of Surgery, Amsterdam UMC, Cancer Centre Amsterdam, University of Amsterdam , Amsterdam , the Netherlands
| | - Freek Daams
- Department of Surgery, Amsterdam UMC, Cancer Centre Amsterdam, University of Amsterdam , Amsterdam , the Netherlands
| | - Marc J van Det
- Department of Surgery, ZGT hospital group , Almelo , the Netherlands
| | - Ewen A Griffiths
- Department of Upper Gastrointestinal Surgery, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham , Birmingham , UK
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham , Birmingham , UK
| | - Jan W Haveman
- Department of Surgery, University Medical Centre Groningen, University of Groningen , Groningen , the Netherlands
| | - Joos Heisterkamp
- Department of Surgery, Elisabeth-TweeSteden Hospital , Tilburg , the Netherlands
| | - Renol Koshy
- Department of Surgery, Newcastle upon Tyne Hospital NHS Trust , Newcastle upon Tyne , UK
- Department of Surgery, University Hospitals of Coventry and Warwickshire NHS Trust , Coventry , UK
| | | | - Fatih Polat
- Department of Surgery, Canisius-Wilhelmina Hospital , Nijmegen , the Netherlands
| | - Peter D Siersema
- Department of Gastroenterology and Hepatology, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , The Netherlands
| | - Pritam Singh
- Department of Surgery, Nottingham University Hospitals NHS Trust , Nottingham , UK
- Department of Surgery, Regional Oesophago-Gastric Unit, Royal Surrey County Hospital , Guildford , UK
| | - Bas Wijnhoven
- Department of Surgery, Erasmus University Medical Centre , Rotterdam , the Netherlands
| | - Gerjon Hannink
- Department of Operating Rooms, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , The Netherlands
| | - Frans van Workum
- Department of Surgery, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , the Netherlands
- Department of Surgery, Canisius-Wilhelmina Hospital , Nijmegen , the Netherlands
| | - Camiel Rosman
- Department of Surgery, Radboud Institute for Health Sciences, Radboud University Medical Centre , Nijmegen , the Netherlands
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Hayat MU, Saeed MA, Saeed A, Khan BM, Abbas S. Effect of Ketamine on Tourniquet Induced Hypertension. PAFMJ 2022. [DOI: 10.51253/pafmj.v72isuppl-2.3634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Objective: To compare the frequency of tourniquet induced hypertension in patients undergoing limb surgeries under general anesthesia with intravenous infusion of ketamine and placebo (saline infusion).
Study Design: Comparative prospective study.
Place and Duration of Study: Anaesthesia Department, Combined Military Hospital, Rawalpindi Pakistan, from May to Nov 2018.
Methodology: Total 80 patients undergoing upper and lower limb surgeries with tourniquet application under general anesthesia were randomly assigned into two equivalent groups. Group A (n=40) received intravenous ketamine 0.1 mg/kg bolus followed by infusion at a rate of 2ug/kg/min while Group B (n=40) received intravenous bolus of normal saline followed by its infusion via infusion pump. Systolic blood pressures were recorded by non-invasive method 30 seconds prior to tourniquet inflation and at 60 mins interval after its inflation. Results were characterized using the descriptive statistics. Mean and standard deviation (SD) were used for quantitative variables while frequency and percentages for qualitative variables. The p-value <0.05 was considered as significant.
Results: Tourniquet induced hypertension was found in 2 (5.0%) group A patients and 11 (27.50%) group B patients with statistically significant p-value of <0.05. Visual analogue scale score was slightly higher in the Saline group, but the result was statistically not significant (p=0.32).
Conclusion: Ketamine infusion reduces the occurrence of tourniquet induced hypertension in patients undergoing surgeries with tourniquet application.
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El-Sayed K, Abd El-fattah A, Saeed A. PolyCystic Ovary Syndrome and Spontaneous Abortion. Al-Azhar International Medical Journal 2022; 0:0-0. [DOI: 10.21608/aimj.2022.112387.1744] [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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Tekkis NP, Rafi D, Brown S, Courtney A, Kawka M, Howell AM, McLean K, Gardiner M, Mavroveli S, Hutchinson P, Tekkis P, Wilkinson P, Sam AH, Savva N, Kontovounisios C, Tekkis N, Rafi D, Brown S, Courtney A, Kawka M, Howell A, McLean K, Gardiner M, Mavroveli S, Hutchinson P, Tekkis P, Wilkinson P, Sam AH, Savva N, Kontovounisios C, Tekkis N, Rafi D, Brown S, Courtney A, Kawka M, Howell A, McLean K, Gardiner M, Mavroveli S, Hutchinson P, Tekkis P, Wilkinson P, Sam AH, Savva N, Kontovounisios C, Tekkis N, Brown S, Kawka M, Mclean K, Savva N, Wilkinson P, Sam AH, Singal A, Chia C, Chia W, Ganesananthan S, Ooi SZY, Pengelly S, Wellington J, Mak S, Subbiah Ponniah H, Heyes A, Aberman I, Ahmed T, Al-Shamaa S, Appleton L, Arshad A, Awan H, Baig Q, Benedict K, Berkes S, Citeroni NL, Damani A, de Sancha A, Fisayo T, Gupta S, Haq M, Heer B, Jones A, Khan H, Kim H, Meiyalagan N, Miller G, Minta N, Mirza L, Mohamed F, Ramjan F, Read P, Soni L, Tailor V, Tas RN, Vorona M, Walker M, Winkler T, Bardon A, Acquaah J, Ball T, Bani W, Elmasry A, Hussein F, Kolluri M, Lusta H, Newman J, Nott M, Perwaiz MI, Rayner R, Shah A, Shaw I, Yu K, Cairns M, Clough R, Gaier S, Hirani D, Jeyapalan T, Li Y, Patel CR, Shabir H, Wang YA, Weatherhead A, Dhiran A, Renney O, Wells P, Ferguson S, Joyce A, Mergo A, Adebayo O, Ahmad J, Akande O, Ang G, Aniereobi E, Awasthi S, Banjoko A, Bates J, Chibada C, Clarke N, Craner I, Desai DD, Dixon K, Duffaydar HI, Kuti M, Mughal AZ, Nair D, Pham MC, Preest GG, Reid R, Sachdeva GS, Selvaratnam K, Sheikh J, Soran V, Stoney N, Wheatle M, Howarth K, Knapp-Wilson A, Lee KS, Mampitiya N, Masson C, McAlinden JJ, McGowan N, Parmar SC, Robinson B, Wahid S, Willis L, Risquet R, Adebayo A, Dhingra L, Kathiravelupillai S, Narayanan R, Soni J, Ghafourian P, Hounat A, Lennon KA, Abdi Mohamud M, Chou W, Chong L, Graham CJ, Piya S, Riad AM, Vennard S, Wang J, Kawar L, Maseland C, Myatt R, Tengku Saifudin TNS, Yong SQ, Douglas F, Ogbechie C, Sharma K, Zafar L, Bajomo MO, Byrne MHV, Obi C, Oluyomi DI, Patsalides MA, Rajananthanan A, Richardson G, Clarke A, Roxas A, Adeboye W, Argus L, McSweeney J, Rahman-Chowdhury M, Hettiarachchi DS, Masood MT, Antypas A, Thomas M, de Andres Crespo M, Zimmerman M, Dhillon A, Abraha S, Burton O, Jalal AHB, Bailey B, Casey A, Kathiravelupillai A, Missir E, Boult H, Campen D, Collins JM, Dulai S, Elhassan M, Foster Z, Horton E, Jones E, Mahapatra S, Nancarrow T, Nyamapfene T, Rimmer A, Robberstad M, Robson-Brown S, Saeed A, Sarwar Y, Taylor C, Vetere G, Whelan MK, Williams J, Zahid D, Chand C, Matthews M. The impact of the COVID-19 pandemic on UK medical education. A nationwide student survey. Med Teach 2022; 44:574-575. [PMID: 34428109 DOI: 10.1080/0142159x.2021.1962835] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
| | - Damir Rafi
- School of Medicine, Imperial College London, London, UK
| | - Sam Brown
- Leicester Medical School, University of Leicester, Leicester, UK
| | - Alona Courtney
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Michal Kawka
- School of Medicine, Imperial College London, London, UK
| | - Ann-Marie Howell
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Kenneth McLean
- Division of Clinical and Surgical Sciences, University of Edinburgh, Edinburgh, UK
| | - Matthew Gardiner
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | | | - Peter Hutchinson
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Paris Tekkis
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Paul Wilkinson
- School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Amir H Sam
- School of Medicine, Imperial College London, London, UK
| | - Nicos Savva
- Division of Management Science and Operations, London Business School, London, UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - J Acquaah
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - T Ball
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - W Bani
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - A Elmasry
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - F Hussein
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - M Kolluri
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - H Lusta
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - J Newman
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - M Nott
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - M I Perwaiz
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - R Rayner
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - A Shah
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - I Shaw
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | - K Yu
- Plymouth University Peninsula Schools of Medicine and Dentistry
| | | | | | - S Gaier
- Queen Mary University of London
| | | | | | - Y Li
- Queen Mary University of London
| | | | | | | | | | - A Dhiran
- St George's Hospital Medical School
| | - O Renney
- St George's Hospital Medical School
| | - P Wells
- St George's Hospital Medical School
| | | | - A Joyce
- The Queen's University of Belfast
| | | | | | - J Ahmad
- The University of Birmingham
| | | | - G Ang
- The University of Birmingham
| | | | | | | | - J Bates
- The University of Birmingham
| | | | | | | | | | - K Dixon
- The University of Birmingham
| | | | - M Kuti
- The University of Birmingham
| | | | - D Nair
- The University of Birmingham
| | | | | | - R Reid
- The University of Birmingham
| | | | | | | | - V Soran
- The University of Birmingham
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - J Soni
- The University of Cambridge
| | | | | | | | | | - W Chou
- The University of East Anglia
| | | | | | - S Piya
- The University of Edinburgh
| | | | | | - J Wang
- The University of Edinburgh
| | | | | | | | | | | | | | | | | | | | | | | | - C Obi
- The University of Leicester
| | | | | | | | | | | | | | | | - L Argus
- The University of Manchester
| | | | | | | | | | | | | | | | | | | | | | | | | | - B Bailey
- University of Brighton and Sussex
| | - A Casey
- University of Brighton and Sussex
| | | | - E Missir
- University of Brighton and Sussex
| | - H Boult
- University of Exeter Medical School
| | - D Campen
- University of Exeter Medical School
| | | | - S Dulai
- University of Exeter Medical School
| | | | - Z Foster
- University of Exeter Medical School
| | - E Horton
- University of Exeter Medical School
| | - E Jones
- University of Exeter Medical School
| | | | | | | | - A Rimmer
- University of Exeter Medical School
| | | | | | - A Saeed
- University of Exeter Medical School
| | - Y Sarwar
- University of Exeter Medical School
| | - C Taylor
- University of Exeter Medical School
| | - G Vetere
- University of Exeter Medical School
| | | | | | - D Zahid
- University of Exeter Medical School
| | - C Chand
- University of Hull and the University of York
| | - M Matthews
- University of Hull and the University of York
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Abd Elmottaleb M, Zakaria AM, Saeed A, Abdel Moneim M. The Association Between Helicobacter Pylori Seropositivity And Risk Of Hyperemesis Gravidarum During Pregnancy. Al-Azhar International Medical Journal 2022; 0:0-0. [DOI: 10.21608/aimj.2022.112243.1742] [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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Salim M, Saeed A, Iqbal M, Khan BA, Khan N, Rabbani I, Alsenani F, Rasul A. Phytochemical screening and evaluation of antioxidant, total phenolic and flavonoid contents in various weed plants associated with wheat crops. BRAZ J BIOL 2022; 84:e256486. [PMID: 35293544 DOI: 10.1590/1519-6984.256486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
This study explores the antioxidant activity, phytochemical screening, total phenolic and flavonoids contents in the extracts of four locally available weeds plants namely Convolvulus arvensis, Chenopodium murale, Avena fatua and Phalaris minor with different solvents. The antioxidant activities of these extracts were determined via various in-vitro methods such as total antioxidant activity (TAA), reducing power (RP), DPPH (2,2-Diphenyl-1-Picrylhydrazyl) free radical scavenging and hydrogen peroxide scavenging assays. Phytochemical screening was performed both qualitatively as well as quantitatively. Total phenolic content (TPC) and total flavonoid content (TFC) were determined through Folin- Ciocalteu reagent and aluminium chloride methods respectively. Methanol-chloroform solvent showed the presence of a high amount of TPC in milligram of gallic acid equivalent per gram of dry weight (mg of GAE/g of DW) in the extracts of all weeds. Their descending sequence was Avena fatua (74.09) ˃ Phalaris minor (65.66) ˃ Chenopodium murale (64.04) ˃ Convolvulus arvensis (61.905), while, chloroform solvent found to be best solvent for the extraction of TFC. Methanol-chloroform solvent was also found to be best solvent for TAA (Total antioxidant activity assay) which showed values in milligram of ascorbic acid equivalent per gram of dry weight (mg of AAE /g of DW), for DPPH scavenging activity, reducing power (antioxidant activity) and hydrogen peroxide scavenging activity. Phytochemical screening indicated the presence of polyphenols, flavonoids, tannins, saponins, alkaloids and glycosides in these weeds.
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Affiliation(s)
- M Salim
- Gomal University, Department of Biological Sciences, D. I. Khan, Pakistan
| | - A Saeed
- Gomal University, Department of Biological Sciences, D. I. Khan, Pakistan
| | - M Iqbal
- Gomal University, Faculty of Pharmacy, D. I. Khan, Pakistan
| | - B A Khan
- Gomal University, Faculty of Pharmacy, D. I. Khan, Pakistan
| | - N Khan
- Gomal University, Faculty of Pharmacy, D. I. Khan, Pakistan
| | - I Rabbani
- Kohat University of Science & Technology, Department of Pharmacy, Kohat, Pakistan
| | - F Alsenani
- Umm Al Qura University, Faculty of Pharmacy, Department of Pharmacognosy, Makkah, Saudi Arabia
| | - A Rasul
- Government College University, Department of Pharmaceutics, Faisalabad, Pakistan
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Mohindra P, Saeed A, Vyfhuis M, Scilla K, Molitoris J, Simone C, Rolfo C, Mehra R. Toxicity and Survival Outcomes From Intensity Modulated Proton Therapy-Based Re-Irradiation in Patients With Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2021.10.167] [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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Munir MA, Anjum KM, Javid A, Khan N, Jianming C, Naseer J, Anjum A, Usman S, Shahzad M, Hafeez S, Hussain T, Saeed A, Badeni AH, Mansoor MK, Hussain I. Sublethal toxicity of carbofuran in cattle egret (Bubulcus ibis coromandus): hematological, biochemical, and histopathological alterations. BRAZ J BIOL 2022; 84:e255055. [PMID: 35019107 DOI: 10.1590/1519-6984.255055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/22/2021] [Indexed: 11/22/2022] Open
Abstract
This study was aimed to investigate Carbofuran (CF)-induced pathological changes in cattle egret. Two hundred cattle egrets were reared and equally divided into four groups and given different CF concentrations (0.03 mg/L, 0.02 mg/L, 0.01 mg/L and 0 mg/L (control group)). Hematology, serum biochemistry, histopathology, and immunological markers were studied. Our results confirm that CF induces anemic conditions, leukocytosis, elevated liver enzymatic activity, and alterations in renal biomarkers. Moreover, specific microscopic lesions such as multifocal necrosis, pyknotic nuclei, hemorrhages, congestion, and inflammatory cell proliferation were observed in the liver, kidney, spleen, and thymus. These findings suggest that CF can induce harmful effects, so the application of this pesticide in the field must be strictly monitored to mitigate the possibility of exposure to non-target species.
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Affiliation(s)
- M A Munir
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - K M Anjum
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - A Javid
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - N Khan
- University of Veterinary and Animal Sciences, Department of Fisheries & Aquaculture, Ravi Campus, Pattoki, Pakistan
| | - C Jianming
- Minjiang University, Institute of Oceanography, Fuzhou, China
| | - J Naseer
- The Islamia University of Bahawalpur, Department of Forestry, Range and Wildlife Management, Bahawalpur, Pakistan
| | - A Anjum
- The Islamia University of Bahawalpur, Faculty of Veterinary and Animal Sciences, Department of Pathology, Bahawalpur, Pakistan
| | - S Usman
- University of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Department of Pathology, Lahore, Pakistan
| | - M Shahzad
- The Islamia University of Bahawalpur, Faculty of Veterinary and Animal Sciences, Department of Pathology, Bahawalpur, Pakistan
| | - Shahid Hafeez
- University of Agriculture Faisalabad, Department of Forestry and Range Management, Faisalabad, Pakistan
| | - T Hussain
- The Islamia University of Bahawalpur, Department of Forestry, Range and Wildlife Management, Bahawalpur, Pakistan
| | - A Saeed
- The Islamia University of Bahawalpur, Department of Forestry, Range and Wildlife Management, Bahawalpur, Pakistan
| | - A H Badeni
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - M K Mansoor
- The Islamia University of Bahawalpur, Faculty of Veterinary and Animal Sciences, Department of Microbiology, Bahawalpur, Pakistan
| | - I Hussain
- Bahauddin Zakariya University, Department of Pathobiology, Multan, Pakistan
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Chieh-Wen L, Tianjun M, Tara G, Saeed A, Naichang Y, Kevin L. S, Gregory M. M. V, Ping X. Dosimetric impact of tumor position displacements between photon and proton stereotactic body radiation therapy for lung cancer. J Radiosurg SBRT 2022; 8:137-146. [PMID: 36275136 PMCID: PMC9489077] [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] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/19/2022] [Indexed: 01/03/2023]
Abstract
Purpose To investigate the impact of tumor position displacements (TPDs) on tumor dose coverage in photon and proton stereotactic body radiation therapy (SBRT) treatments for lung cancer patients. Methods From our institutional database of 2877 fractions from 770 lung cancer patients treated with photon SBRT in 2017-2021, 163 fractions from 88 patients with recorded iso-center shifts of >1.5 cm in any direction under kV-cone-beam CT guidance were identified. By double registrations with bony and tumor alignments, the difference between the iso-center shifts of these two alignments was categorized as TPDs. One fraction from each of 15 patients who had TPD magnitudes >3 mm were selected for this study. For each patient, one proton plan using intensity modulated proton therapy (IMPT) with robust optimization was generated retrospectively. All photon plans had V100%RX>99% of GTVs and V100%RX>98% of ITVs. Proton plans were evaluated with two worse-case scenario (voxelwise worst and worst scenario) using 5mm and 3.5% uncertainty to achieve the same planning goals as the corresponding photon plans. These two evaluation proton plans were named proton-1st and proton-2nd plans. The dosimetric effect of TPD was simulated by shifting tumor contours with the corresponding shift on patient specific planning CT and by recalculating the dose of the original plan. Results The range of magnitude of TPDs was 3.58-28.71 mm. In photon plans, TPDs did not impact tumor dose coverage, still achieving V100%RX of the GTV≥99% and V100%RX of the ITV≥98%. In proton plans for patients with TPDs>10 mm, inadequate target dose coverage was observed. More specifically, 8 fractions of proton-1st plans and 4 fractions of proton-2nd had V100%RX of the GTV<99% and V100%RX of the ITV<98%. Conclusions Adequate tumor dose coverage was achieved in photon SBRT for magnitude of TPDs up to 20 mm. TPDs had greater impact in proton SBRT and adaptive planning was needed when the magnitude of TPDs>10 mm to provide adequate tumor dose coverage.
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Affiliation(s)
- Liu Chieh-Wen
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
| | - Ma Tianjun
- Department of Radiation Medicine, MedStar Georgetown University Hospital, 3800 Reservoir Rd NW, Washington, DC 20007, USA
| | - Gray Tara
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
| | - Ahmed Saeed
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
| | - Yu Naichang
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
| | - Stephans Kevin L.
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
| | - Videtic Gregory M. M.
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
| | - Xia Ping
- Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA
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Saeed A, Shabir G, Channar PA, Flörke U, Hökelek T, Erben MF. COMPUTATIONAL INVESTIGATIONS, HIRSHFELD SURFACE ANALYSIS, INTERACTION ENERGY CALCULATIONS, AND ENERGY FRAMEWORK CRYSTAL STRUCTURE OF METHYL 2-AMINO-5-HYDROXYBENZOATE. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621110111] [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: 11/23/2022]
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Ahmad A, Saeed A, Gulshan AB, Wali S, Hadi F, Ullah S, Fazlullah F, Sher AA, Rizwan M, Rafiq M. Prediction of soil seed bank of piedmont and alluvial environments of Dera Ghazi Khan, Punjab, Pakistan. BRAZ J BIOL 2021; 84:e255485. [PMID: 34878007 DOI: 10.1590/1519-6984.255485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 09/30/2021] [Indexed: 11/22/2022] Open
Abstract
The current focus is on the overall pattern of seed storage present in the fragments of the soil of piedmont and alluvial landscapes of the environment. The present study predicted the seed banks of both soils of alluvial and piedmont zones in different ecological conditions and evaluate the potential of seeds in the restoration of both environments. The composition of the seed bank of soil is mainly affected by the alluvial environment and the structure of cleared area shows that more species of germinating annual grasses and growable seeds with the higher total number. Extant vegetation structures have an important role in the diversity of soil seed reservoirs, whose composition corresponded with the openness of the site. When in situ soil seed bank is recruited, it helps to restore only some components of the plant community in an alluvial environment. In our current research, it was confirmed that seed richness was higher in number at lower elevation (alluvial) than that at high elevation (piedmont). Seed richness showed a significant negative correlation with anions, cations, while significantly positive with altitude that suggests the richness pattern of the overall seed bank of the area is influenced by various environmental factors.
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Affiliation(s)
- A Ahmad
- Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan
| | - A Saeed
- Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan
| | - A B Gulshan
- Ghazi University, Department of Botany, D. G. Khan, Punjab, Pakistan
| | - S Wali
- Islamia College Peshawar, Department of Botany, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - F Hadi
- University of Peshawar, Department of Botany, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - S Ullah
- Islamia College Peshawar, Department of Botany, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - F Fazlullah
- Islamia College Peshawar, Department of Botany, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - A A Sher
- Islamia College Peshawar, Department of Botany, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - M Rizwan
- Islamia College Peshawar, Department of Botany, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - M Rafiq
- Government Degree College, Department of Botany, Dir Lower, Khyber Pakhtunkhwa, Pakistan
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Rahman Q, Nadeem MS, Altaf M, Khan SH, Saeed A, Naseer J, Hamed MH, Kayani AR, Rais M. Assessment of anthropogenic-causing-agents act on waterbirds-diversity in the vicinity of Tarbela Dam, Indus River, Pakistan. BRAZ J BIOL 2021; 84:e251197. [PMID: 34852136 DOI: 10.1590/1519-6984.251197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 08/10/2021] [Indexed: 11/22/2022] Open
Abstract
Birds are among the best bio-indicators, which can guide us to recognize some of the main conservation concerns in ecosystems. Anthropogenic impacts such as deforestation, habitat degradation, modification of landscapes, and decreased quality of habitats are major threats to bird diversity. The present study was designed to detect anthropogenic causative agents that act on waterbird diversity in Tarbella Dam, Indus River, Pakistan. Waterbird censuses were carried out from March 2019 to February 2020 in multiple areas around the dam. A total of 2990 waterbirds representing 63 species were recorded. We detected the highest waterbird richness and diversity at Pehure whereas the highest density was recorded at Kabbal. Human activity impacts seemed to be the main factor determining the waterbird communities as waterbirds were negatively correlated with the greatest anthropogenic impacts. Waterbirds seem to respond rapidly to human disturbance.
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Affiliation(s)
- Q Rahman
- Department of Zoology, PMAS-Arid Agriculture UNiversity Rawalpindi, Rawalpindi, Pakistan
| | - M S Nadeem
- Department of Zoology, PMAS-Arid Agriculture UNiversity Rawalpindi, Rawalpindi, Pakistan
| | - M Altaf
- Department of Forestry, Range and Wildlife Management, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - S H Khan
- Department of Forestry and Range Management, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - A Saeed
- Department of Forestry, Range and Wildlife Management, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - J Naseer
- Department of Forestry, Range and Wildlife Management, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - M H Hamed
- School of Zoology, Minhaj University Lahore, Pakistan
| | - A R Kayani
- Department of Zoology, PMAS-Arid Agriculture UNiversity Rawalpindi, Rawalpindi, Pakistan
| | - M Rais
- Department of Wildlife Management, PMAS-Arid Agriculture University Rawalpindi, Rawalpindi, Pakistan
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Saeed A, Bentzen S, Mishra M. Systematic Review and Pooled Analysis of the Impact of Treatment-Induced Lymphopenia on Survival of Glioblastoma Patients. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1598] [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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Salem MS, Ahmed S, Shaker A, Alshammari MT, Al-Dhlan KA, Alanazi A, Saeed A, Abouelatta M. Bandwidth Broadening of Piezoelectric Energy Harvesters Using Arrays of a Proposed Piezoelectric Cantilever Structure. Micromachines (Basel) 2021; 12:mi12080973. [PMID: 34442595 PMCID: PMC8402029 DOI: 10.3390/mi12080973] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 11/30/2022]
Abstract
One of the most important challenges in the design of the piezoelectric energy harvester is its narrow bandwidth. Most of the input vibration sources are exposed to frequency variation during their operation. The piezoelectric energy harvester’s narrow bandwidth makes it difficult for the harvester to track the variations of the input vibration source frequency. Thus, the harvester’s output power and overall performance is expected to decline from the designed value. This current study aims to solve the problem of the piezoelectric energy harvester’s narrow bandwidth. The main objective is to achieve bandwidth broadening which is carried out by segmenting the piezoelectric material of the energy harvester into n segments; where n could be more than one. Three arrays with two, four, and six beams are shaped with two piezoelectric segments. The effect of changing the length of the piezoelectric material segment on the resonant frequency, output power, and bandwidth, as well as the frequency response is investigated. The proposed piezoelectric energy harvesters were implemented utilizing a finite element method (FEM) simulation in a MATLAB environment. The results show that increasing the number of array beams increases the output power and bandwidth. For the three-beam arrays, at n equals 2, 6 mW output power and a 9 Hz bandwidth were obtained. Moreover, the bandwidth of such arrays covered around 5% deviation from its resonant frequency. All structures were designed to operate as a steel wheel safety sensor which could be used in train tracks.
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Affiliation(s)
- Marwa S. Salem
- Department of Computer Engineering, Computer Science and Engineering College, University of Ha’il, Ha’il 55211, Saudi Arabia;
- Department of Electrical Communication and Electronics Systems Engineering, Faculty of Engineering, Modern Science and Arts (MSA) University, Cairo 12566, Egypt
| | - Shimaa Ahmed
- Department of Electronics and Communications, Faculty of Engineering, Helwan University, Helwan 11731, Egypt;
| | - Ahmed Shaker
- Department of Engineering Physics and Mathematics, Faculty of Engineering, Ain Shams University, Cairo 11566, Egypt;
| | - Mohammad T. Alshammari
- Department of Computer Science and Information, Computer Science and Engineering College, University of Ha’il, Ha’il 55211, Saudi Arabia; (M.T.A.); (K.A.A.-D.); (A.A.)
| | - Kawther A. Al-Dhlan
- Department of Computer Science and Information, Computer Science and Engineering College, University of Ha’il, Ha’il 55211, Saudi Arabia; (M.T.A.); (K.A.A.-D.); (A.A.)
| | - Adwan Alanazi
- Department of Computer Science and Information, Computer Science and Engineering College, University of Ha’il, Ha’il 55211, Saudi Arabia; (M.T.A.); (K.A.A.-D.); (A.A.)
| | - Ahmed Saeed
- Electrical Engineering Department, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
- Correspondence:
| | - Mohamed Abouelatta
- Department of Electronics and Communications, Faculty of Engineering, Ain Shams University, Cairo 11566, Egypt;
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Ikram M, Inayat T, Haider A, Ul-Hamid A, Haider J, Nabgan W, Saeed A, Shahbaz A, Hayat S, Ul-Ain K, Butt AR. Graphene Oxide-Doped MgO Nanostructures for Highly Efficient Dye Degradation and Bactericidal Action. Nanoscale Res Lett 2021; 16:56. [PMID: 33825981 PMCID: PMC8026802 DOI: 10.1186/s11671-021-03516-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/24/2021] [Indexed: 05/30/2023]
Abstract
Various concentrations (0.01, 0.03 and 0.05 wt ratios) of graphene oxide (GO) nanosheets were doped into magnesium oxide (MgO) nanostructures using chemical precipitation technique. The objective was to study the effect of GO dopant concentrations on the catalytic and antibacterial behavior of fixed amount of MgO. XRD technique revealed cubic phase of MgO, while its crystalline nature was confirmed through SAED profiles. Functional groups presence and Mg-O (443 cm-1) in fingerprint region was evident with FTIR spectroscopy. Optical properties were recorded via UV-visible spectroscopy with redshift pointing to a decrease in band gap energy from 5.0 to 4.8 eV upon doping. Electron-hole recombination behavior was examined through photoluminescence (PL) spectroscopy. Raman spectra exhibited D band (1338 cm-1) and G band (1598 cm-1) evident to GO doping. Formation of nanostructure with cubic and hexagon morphology was confirmed with TEM, whereas interlayer average d-spacing of 0.23 nm was assessed using HR-TEM. Dopants existence and evaluation of elemental constitution Mg, O were corroborated using EDS technique. Catalytic activity against methyl blue ciprofloxacin (MBCF) was significantly reduced (45%) for higher GO dopant concentration (0.05), whereas bactericidal activity of MgO against E. coli was improved significantly (4.85 mm inhibition zone) upon doping with higher concentration (0.05) of GO, owing to the formation of nanorods.
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Affiliation(s)
- M Ikram
- Solar Cell Application Research Lab, Department of Physics, Government College University Lahore, Lahore, 54000, Punjab, Pakistan.
| | - T Inayat
- Physics Department, Lahore Garrison University, Lahore, 54000, Punjab, Pakistan
| | - A Haider
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, Lahore, 54000, Punjab, Pakistan
| | - A Ul-Hamid
- Core Research Facilities, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
| | - J Haider
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - W Nabgan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - A Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - A Shahbaz
- Department of Physics, Government College University Lahore, 54000, Lahore, Pakistan
| | - S Hayat
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - K Ul-Ain
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - A R Butt
- Physics Department, Lahore Garrison University, Lahore, 54000, Punjab, Pakistan
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Parrado-Fernandez C, Leoni V, Saeed A, Rodriguez-Rodriguez P, Sandebring-Matton A, Córdoba-Beldad CM, Bueno P, Gali CC, Panzenboeck U, Cedazo-Minguez A, Björkhem I. Sex difference in flux of 27-hydroxycholesterol into the brain. Br J Pharmacol 2021; 178:3194-3204. [PMID: 33345295 PMCID: PMC8359195 DOI: 10.1111/bph.15353] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 11/30/2020] [Accepted: 12/05/2020] [Indexed: 01/21/2023] Open
Abstract
Background and Purpose The cerebrospinal fluid (CSF)/plasma albumin ratio (QAlb) is believed to reflect the integrity of the blood–brain barrier (BBB). Recently, we reported that QAlb is lower in females. This may be important for uptake of neurotoxic 27‐hydroxycholesterol (27OH) by the brain in particular because plasma levels of 27OH are higher in males. We studied sex differences in the relation between CSF and plasma levels of 27OH and its major metabolite 7α‐hydroxy‐3‐oxo‐4‐cholestenoic acid (7HOCA) with QAlb. We tested the possibility of sex differences in the brain metabolism of 27OH and if its flux into the brain disrupted integrity of the BBB. Experimental Approach We have examined our earlier studies looking for sex differences in CSF levels of oxysterols and their relation to QAlb. We utilized an in vitro model for the BBB with primary cultured brain endothelial cells to test if 27OH has a disruptive effect on this barrier. We measured mRNA and protein levels of CYP7B1 in autopsy brain samples. Key Results The correlation between CSF levels of 27OH and QAlb was higher in males whereas, with 7HOCA, the correlation was higher in females. No significant sex difference in the expression of CYP7B1 mRNA in brain autopsy samples. A correlation was found between plasma levels of 27OH and QAlb. No support was obtained for the hypothesis that plasma levels of 27OH have a disruptive effect on the BBB. Conclusions and Implications The sex differences are discussed in relation to negative effects of 27OH on different brain functions. LINKED ARTICLES This article is part of a themed issue on Oxysterols, Lifelong Health and Therapeutics. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.16/issuetoc
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Affiliation(s)
- Cristina Parrado-Fernandez
- Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Solna, Sweden.,Discovery and Research, AlzeCure Pharma AB, Huddinge, Sweden
| | - Valerio Leoni
- Laboratory of Clinical Chemistry, Hospital of Desio, ASST-Monza and School of Medicine, University of Milano Bicocca, Monza, Italy
| | - Ahmed Saeed
- Department of Laboratory Medicine, Karolinska Institute, Huddinge, Sweden
| | | | - Anna Sandebring-Matton
- Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Solna, Sweden
| | | | - Paula Bueno
- Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Solna, Sweden
| | - Chaitanya Chakravarthi Gali
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Ute Panzenboeck
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Angel Cedazo-Minguez
- Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Solna, Sweden.,Rare & Neurologic Diseases Research Therapeutic Area, Neurodegeneration Research, Sanofi Pharmaceuticals, Paris, France
| | - Ingemar Björkhem
- Department of Laboratory Medicine, Karolinska Institute, Huddinge, Sweden
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O'Connell JE, Saeed A, Jones HB, Lloyd CJ. Prognostic indicators and outcomes following surgical management of metastatic cutaneous squamous cell carcinoma of the head and neck. Br J Oral Maxillofac Surg 2021; 59:1186-1191. [PMID: 34674892 DOI: 10.1016/j.bjoms.2021.01.003] [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: 09/28/2020] [Accepted: 01/08/2021] [Indexed: 11/24/2022]
Abstract
Metastatic cutaneous SCC carries a poor prognosis with five-year survival of 25%-57%. The aim of this study is to examine the outcomes following surgery with adjuvant therapy for management of metastatic cSCC in a UK-based population. This is a retrospective review of patients with metastatic cSCC of the head and neck who underwent primary surgery at a regional center during a six-year period. Overall and disease specific survival were calculated using Kaplan-Meier and log-rank tests. Results were reported as hazard ratios (HR) with 95% confidence intervals. Forty-five patients met the inclusion criteria. The mean time to discovery of metastases was 9.3 months (range, 0-40 months). Only two patients (4%) had discovery of metastases after two years, with none after 3.3 years. The overall five5-year survival was 31% (95% CI 15%to 48%) with two-year survival at 48% (95% CI 31%to 63%). The median OS survival was 722 days (95% CI 607to 1359). Patients aged >80 years had a decreased OS. This is the largest UK based study documenting the overall and disease specific survival associated with metastatic cutaneous SCC of the head and neck. Our overall survival is comparable to similar studies, but remains poor. Total number of involved nodes, and lymph node ratio were not statistically significant.
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Affiliation(s)
- J E O'Connell
- Department of Maxillofacial, Head and Neck Surgery, Betsi Cadwaladar University Hospital, Glan Clwyd, Bodelwyddan, North Wales LL18 5UJ, UK.
| | - A Saeed
- Department of Maxillofacial, Head and Neck Surgery, Betsi Cadwaladar University Hospital, Glan Clwyd, Bodelwyddan, North Wales LL18 5UJ, UK.
| | - H B Jones
- Department of Maxillofacial, Head and Neck Surgery, Betsi Cadwaladar University Hospital, Glan Clwyd, Bodelwyddan, North Wales LL18 5UJ, UK.
| | - C J Lloyd
- Department of Maxillofacial, Head and Neck Surgery, Betsi Cadwaladar University Hospital, Glan Clwyd, Bodelwyddan, North Wales LL18 5UJ, UK.
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Ahad A, Salman M, Ikram A, Ashraf Z, Amir A, Saeed A, Ahmad A. Prevalence and molecular Characterization of ESBL-producing Escherichia coli in waste water samples from Pakistan. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.119] [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: 11/25/2022] Open
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36
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Abbas N, Shabir G, Saeed A, Tirmizi SA, Echeverría GA, Piro OE, Erben MF. Synthesis and Structure of 4-Chloro-2-{[5-(diethylamino)-2-hydroxybenzylidene]amino}phenol and Its Metal Complexes. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220120233] [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: 11/23/2022]
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Amir A, Ikram A, Ali Z, Rizwan M, Saeed A, Salman M. Pangenome analysis and reverse vaccinology of XDR Salmonella typhi strain from Pakistan identified novel vaccine targets. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1242] [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: 10/22/2022] Open
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38
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Saeed A, Vyfhuis M, Scilla K, Molitoris J, Simone C, Burrows W, Mehra R, Rolfo C, Miller R, Mohindra P. Clinical Outcomes in Non-Small Cell Lung Cancer Patients Treated with Pencil Beam Scanning Proton Reirradiation after Previous Thoracic Radiation. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1267] [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: 10/23/2022]
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Shalaby O, Saeed A, Elmohamady MN. Immune modulator therapy compared with vitrectomy for management of complicated intermediate uveitis: a prospective, randomized clinical study. Arq Bras Oftalmol 2020; 83:402-409. [PMID: 33084818 DOI: 10.5935/0004-2749.20200079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 10/04/2019] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To compare the benefits and side effects of pars plana vitrectomy with those of systemic immune modulator therapy for patients with complicated intermediate uveitis. METHODS This prospective clinical trial enrolled patients with recurrent intermediate uveitis who exhibited minimal improvement of visual acuity, despite injections of periocular steroids. Twenty patients were randomized to the pars plana vitrectomy group or oral steroid and cyclosporine-A group (10 eyes of 10 patients per group). Follow-up was performed for 24 months to study changes in visual acuity, binocular indirect ophthalmoscopy score, fluorescein angiography, and optical coherence tomography findings. RESULTS Visual acuity (logarithm of the minimal angle of resolution) significantly improved from 0.71 to 0.42 (p=0.001) in the surgical group, whereas it improved from 0.68 to 0.43 (p=0.001) in the immune modulator therapy group. Seven patients (70%) in the surgical group gained ≥2 lines, and six patients (60%) in the immune modulator therapy group gained ≥2 lines (p=0.970). Fluorescein angiography and optical coherence tomography studies showed that six of seven pars plana vitrectomy patients who had cystoid macular edema experienced improvement, whereas two patients with diffuse macular edema did not experience improvement. In the immune modulator therapy group, three of six patients with cystoid macular edema did not experience improvement, whereas two patients with diffuse macular edema experienced improvement. CONCLUSIONS Pars plana vitrectomy and immune modulator therapy resulted in significant improvement in visual function in patients with persistent inflammation secondary to chronic intermediate uveitis. Despite this success, there remains a need for the determination of optimal indications for the use of each modality. Immune modulator therapy was successful for the treatment of diffuse macular edema associated with chronic intermediate uveitis, whereas pars plana vitrectomy was not.
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Affiliation(s)
- Osama Shalaby
- Ophthalmology department, Faculty of Medicine, Benha University, Benha City, Egypt
| | - Ahmed Saeed
- Ophthalmology department, Faculty of Medicine, Benha University, Benha City, Egypt
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Khodair D, Shaker A, El Munim HEA, Saeed A, Abouelatta M. A Comparative Study Between Modified MPPT Algorithms Using Different Types of Solar Cells. 2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES) 2020. [DOI: 10.1109/spies48661.2020.9243057] [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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41
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Park R, Lopes L, Saeed A. Anti-PD-1/L1-associated immune-related adverse events as harbinger of favorable clinical outcome: systematic review and meta-analysis. Clin Transl Oncol 2020; 23:100-109. [DOI: 10.1007/s12094-020-02397-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/12/2020] [Indexed: 12/19/2022]
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42
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Iqbal M, Elmassry A, Saad H, AM Gad A, Ibrahim O, Hamed N, Saeed A, S. Khalil A, Tawfik M, Said A, Amer I, Nooreldin A, Said O, Reffat M, Anwar S, Badawi A. Standard cross-linking protocol versus accelerated and transepithelial cross-linking protocols for treatment of paediatric keratoconus: a 2-year comparative study. Acta Ophthalmol 2020; 98:e352-e362. [PMID: 31654497 PMCID: PMC7216930 DOI: 10.1111/aos.14275] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 09/18/2019] [Indexed: 01/14/2023]
Abstract
PURPOSE To compare the efficacy, safety and stability of standard epithelium-off cross-linking (SCXL) versus accelerated epithelium-off cross-linking (ACXL) and transepithelial epithelium-on cross-linking (TCXL) in the treatment of progressive keratoconus (KC) in children. METHODS This prospective multicentre controlled trial included 271 eyes (136 children) with grade 1-3 progressive KC who were randomized to undergo SCXL (n = 91, as a control group), ACXL (n = 92) or TCXL (n = 88). Uncorrected and corrected distance visual acuity, subjective refraction, pachymetry, keratometry and corneal topography measurements were recorded preoperatively and 6, 12 and 24 months postoperatively. RESULTS At 1 year, there was no significant difference in uncorrected distance visual acuity, refractive sphere, cylinder, spherical equivalent or Kmax between the ACXL and SCXL groups; however, during year 2, ACXL regressed while SCXL continued to improve. After 2 years, there were significant differences in all visual, refractive and keratometric components between SCXL and both ACXL and TCXL (p < 0.0001) and between ACXL and TCXL (p < 0.0001). KC progressed in 5.4% of patients who had ACXL and 28.4% of those who had TCXL but in none of those who had SCXL. Vernal keratoconjunctivitis was documented in 43.3% of eyes that progressed postoperatively. CONCLUSION SCXL was more effective for paediatric KC and achieved greater stability than either ACXL or TCXL, and ACXL was superior to TCXL. SCXL also achieved marked improvement in both myopia and spherical equivalent; however, these refractive outcomes were unpredictable and uncontrollable. TCXL had a 28.4% failure rate within 2 years. SCXL is preferable for management of paediatric KC.
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Affiliation(s)
- Mohammed Iqbal
- Department of OphthalmologyFaculty of MedicineSohag UniversitySohagEgypt
| | - Ahmed Elmassry
- Department of OphthalmologyFaculty of MedicineAlexandria UniversityAlexandriaEgypt
| | - Hisham Saad
- Department of OphthalmologyFaculty of MedicineTanta UniversityTantaEgypt
| | - Ahmed AM Gad
- Department of OphthalmologyFaculty of MedicineZagazig UniversityZagazigEgypt
| | - Ola Ibrahim
- Department of OphthalmologyFaculty of MedicineAin Shams UniversityCairoEgypt
| | - Noha Hamed
- Department of OphthalmologyFaculty of MedicineAin Shams UniversityCairoEgypt
| | - Ahmed Saeed
- Department of OphthalmologyFaculty of MedicineBenha UniversityBenhaEgypt
| | - Ahmad S. Khalil
- Department of OphthalmologyFaculty of MedicineZagazig UniversityZagazigEgypt
| | - Mohamed Tawfik
- Department of OphthalmologyMemorial Institute of OphthalmologyGizaEgypt
| | - Amr Said
- Department of OphthalmologyFaculty of MedicineAlexandria UniversityAlexandriaEgypt
| | - Ibrahim Amer
- Department of OphthalmologyFaculty of MedicineAlazhar UniversityAssuitEgypt
| | - Asaad Nooreldin
- Department of OphthalmologyFaculty of MedicineAlazhar UniversityAssuitEgypt
| | - Omar Said
- Department of OphthalmologyFaculty of MedicineFayoum UniversityFayoumEgypt
| | - Mohamed Reffat
- Department of OphthalmologyMansoura Ophthalmic HospitalMansouraEgypt
| | - Seif Anwar
- Department of OphthalmologyMansoura Ophthalmic HospitalMansouraEgypt
| | - Amani Badawi
- Department of OphthalmologyFaculty of MedicineMansoura UniversityMansouraEgypt
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Ayaz M, Ali F, Saeed A, Abbas N, Khan M, Shabir G, Saleem A, Raza Kazmi SA, Khanzada. Synthesis and Serviceability of New Symmetric Bis-pyrazolone Metal Complex Acid Dyes. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363219120272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Aqeel M, Ikram M, Imran M, Ul-Hamid A, Qumar U, Shahbaz A, Ikram M, Saeed A. TiO2 Co-doped with Zr and Ag shows highly efficient visible light photocatalytic behavior suitable for treatment of polluted water. RSC Adv 2020; 10:42235-42248. [PMID: 35516777 PMCID: PMC9057920 DOI: 10.1039/d0ra08718a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 10/13/2020] [Accepted: 11/10/2020] [Indexed: 11/28/2022] Open
Abstract
The objective of this study is to analyze the effects of zirconium (Zr) and silver (Ag) doping on the photoactivity of titania (TiO2). Zr–Ag (ZA) co-doped TiO2 products were fabricated via sol–gel technique and their properties (structural and chemical) were characterized. The weight ratio of TiO2 was fixed, while weight ratios of Zr and Ag were varied from 2 to 4, 6 and 8 wt% while synthesized samples were calcined at 400 °C for 3 h. The XRD results demonstrated that the incorporation of metal doping agents failed to alter the host material's lattice structure, however, its crystallite size was reduced from 13.54 to 5.05 nm with increasing Zr4+ and Ag+ concentrations. FTIR spectroscopy was used to examine various functional groups. In the attained spectra, an ample absorption peak between 500 and 1000 cm−1 was recorded, which was ascribed to Ti–O–Ti linkage vibration mode present within TiO2. Surface morphology, microstructure, SAED patterns and elemental composition were examined with FE-SEM, HR-TEM and EDX, which served to confirm the ZA-doped TiO2 product. Band gap energy of the co-doped material was significantly reduced as indicated by a higher wavelength redshift in the spectra. The photoactivity and kinetics of photo-products were investigated by observing photo-decolorization of methylene blue (MB) under a radiation source. Photodecomposition of MB was dramatically enhanced when titania co-doped with Zr and Ag was employed compared to un-doped or mono-doped TiO2. The ZA (8 wt%) co-doped TiO2 photocatalyst depicted the maximum MB removal efficiency (∼93%) within 90 min under a light source. The objective of this study is to analyze the effects of zirconium (Zr) and silver (Ag) doping on the photoactivity of titania (TiO2).![]()
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Affiliation(s)
- M. Aqeel
- Solar Cell Applications Research Lab
- Department of Physics
- Government College University Lahore
- Paksitan
| | - M. Ikram
- Solar Cell Applications Research Lab
- Department of Physics
- Government College University Lahore
- Paksitan
| | - M. Imran
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Centre for Soft Matter Science and Engineering
- Beijing Engineering Center for Hierarchical Catalysts
- Beijing University of Chemical Technology
- Beijing 100029
| | - A. Ul-Hamid
- Center for Engineering Research
- Research Institute
- King Fahd University of Petroleum & Minerals
- Dhahran 31261
- Saudi Arabia
| | - U. Qumar
- Department of Physics
- Riphah Institute of Computing and Applied Sciences (RICAS)
- Riphah International University
- Lahore
- Pakistan
| | - A. Shahbaz
- Department of Physics
- Government College University Lahore
- Pakistan
| | - M. Ikram
- Institute of Chemical Engineering and Technology (ICET)
- University of the Punjab
- Lahore 54000
- Pakistan
| | - A. Saeed
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320
- Pakistan
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Saleem S, Saeed A, Usman S, Ferzund J, Arshad J, Mirza J, Manzoor T. Granger causal analysis of electrohysterographic and tocographic recordings for classification of term vs. preterm births. Biocybern Biomed Eng 2020. [DOI: 10.1016/j.bbe.2020.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Usman S, Saeed A, Fatima S, Ramesh V, Shah F, Islam Q. In Vitro Bioequivalence of Pregabalin Capsules (150 mg): An Alternative to In Vivo Bioequivalence Studies. DISSOLUT TECHNOL 2020. [DOI: 10.14227/dt270420p24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mohiuddin M, Chowdhury MN, Chowdhury MS, Islam S, Hasan R, Zakir H, Saeed A, Masum AS. Association of Estimated GFR (By MDRD) with the Carotid Intima Media Thickness (CIMT) in Different Stages of CKD among Patients with Type 2 Diabetes Mellitus. Mymensingh Med J 2020; 29:209-214. [PMID: 31915360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Most of the mortalities among Diabetic Nephropathy patients are cardiovascular, if we identify the risk factor, measures can be taken to prevent it. Hence an objective was set to evaluate the association between carotid artery intima media thickness (CIMT) with eGFR in patients of CKD stage III, IV and V among patients with type 2 diabetes mellitus; also, correlation with age, BMI, lipid profile. This cross-sectional, observational study was performed in 70 patients in different stages of CKD in Diabetic Patients selected by Inclusion Criteria (Diabetic nephropathy patients with stages III, IV, V and exclusion Criteria (Acute kidney injury, History of carotid surgery, Patients of MI and stroke). This study was performed in Department of Nephrology, Dhaka Medical College in collaboration with the Department of Radiology and Imaging, laboratory of Department of Biochemistry and Department of Microbiology at Dhaka Medical College Hospital (By standard method in laboratory) from 1st January 2016 to 31st December 2016. eGFR was measured by MDRD formula and the CIMT was measured using an ultrasonographic examination. The mean CIMT was 0.9±0.21mm, and 62.9% of the subjects showed IMT thickening (≥1mm). The carotid IMT elevated significantly with the stage progression of CKD (Overall eGFR mean 28.8±14.5mL/min/1.73m² in CIMT<1mm with range from 6 to 54 and 9.1±9.0mL/min/1.73m² in CIMT ≥1mm with range from 3 to 32 (p=0.001). The eGFR was significantly lower in the patients with CIMT thickening than those without CIMT thickening. eGFR was also significantly associated with CKD stages (p=0.001), serum creatinine (p=0.001), BMI (r = -0.330, p=0.005), and negatively associated with age group, duration of hypertension, smoking. However, the CIMT was not significantly different among the patients at different stages of diabetic nephropathy (r = -0.172, p=156) and age group. It has been concluded that the mean CIMT was markedly high in patients with CKD compared to normal expected value. This study showed a relationship between the CIMT and the renal parameters as eGFR and the stages of diabetic nephropathy with a confirm association between the CIMT and diabetic macroangiopathy.
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Affiliation(s)
- M Mohiuddin
- Dr Md Mohiuddin, Assistant Professor, Department of Nephrology, Anwer Khan Modern Medical College (AKMMC), Dhaka, Bangladesh
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Crick PJ, Yutuc E, Abdel-Khalik J, Saeed A, Betsholtz C, Genove G, Björkhem I, Wang Y, Griffiths WJ. Formation and metabolism of oxysterols and cholestenoic acids found in the mouse circulation: Lessons learnt from deuterium-enrichment experiments and the CYP46A1 transgenic mouse. J Steroid Biochem Mol Biol 2019; 195:105475. [PMID: 31541728 PMCID: PMC6880786 DOI: 10.1016/j.jsbmb.2019.105475] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 12/31/2022]
Abstract
While the presence and abundance of the major oxysterols and cholestenoic acids in the circulation is well established, minor cholesterol metabolites may also have biological importance and be of value to investigate. In this study by observing the metabolism of deuterium-labelled cholesterol in the pdgfbret/ret mouse, a mouse model with increased vascular permeability in brain, and by studying the sterol content of plasma from the CYP46A1 transgenic mouse overexpressing the human cholesterol 24S-hydroxylase enzyme we have been able to identify a number of minor cholesterol metabolites found in the circulation, make approximate-quantitative measurements and postulate pathways for their formation. These "proof of principle" data may have relevance when using mouse models to mimic human disease and in respect of the increasing possibility of treating human neurodegenerative diseases with pharmaceuticals designed to enhance the activity of CYP46A1 or by adeno-associated virus delivery of CYP46A1.
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Affiliation(s)
- Peter J Crick
- Swansea University Medical School, ILS1 Building, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Eylan Yutuc
- Swansea University Medical School, ILS1 Building, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Jonas Abdel-Khalik
- Swansea University Medical School, ILS1 Building, Singleton Park, Swansea SA2 8PP, Wales, UK
| | - Ahmed Saeed
- Department of Laboratory Medicine, Division of Clinical Chemistry, Karolinska University Hospital, Karolinska Institutet, 141 86 Huddinge, Sweden
| | | | - Guillem Genove
- ICMC Karolinska Institutet, Novum, 141 57 Huddinge, Sweden
| | - Ingemar Björkhem
- Department of Laboratory Medicine, Division of Clinical Chemistry, Karolinska University Hospital, Karolinska Institutet, 141 86 Huddinge, Sweden
| | - Yuqin Wang
- Swansea University Medical School, ILS1 Building, Singleton Park, Swansea SA2 8PP, Wales, UK.
| | - William J Griffiths
- Swansea University Medical School, ILS1 Building, Singleton Park, Swansea SA2 8PP, Wales, UK.
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Baranda J, Bur A, Tsue T, Shnayder L, Kakarala K, Telfah M, Lin T, Williamson S, Al-Kasspooles M, Ashcraft J, Lakis N, Madan R, Khan Q, Saeed A, Reed G, Weir S, Godwin A, Thomas S, Komiya T, Iwakuma T. A window of opportunity trial of atorvastatin targeting p53 mutant malignancies. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz268.105] [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: 11/12/2022] Open
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50
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Saeed A, Khairnar R, Sharma A, Larson G, Gondi V, Tsai H, Wang C, Laramore G, Stevens C, Vargas C, Mishra M. Clinical Outcomes in Patients with Recurrent Glioblastoma Treated with Proton Beam Therapy Reirradiation: Analysis of the Multi-Institutional Proton Collaborative Group Registry. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2307] [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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