80 results on '"KHALIL, H."'
Search Results
2. Microbial-induced CaCO3 filled seaweed-based film for green plasticulture application
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Shawkataly, Abdul Khalil H. P., Chong, Eunice Wan Ni, Owolabi, Folahan Abdulwahab Taiwo, Mustapha, Asniza, Tye, Ying Ying, Tajarudin, Husnul Azan, Md Tahir, Paridah, Rizal, Samsul, Shawkataly, Abdul Khalil H. P., Chong, Eunice Wan Ni, Owolabi, Folahan Abdulwahab Taiwo, Mustapha, Asniza, Tye, Ying Ying, Tajarudin, Husnul Azan, Md Tahir, Paridah, and Rizal, Samsul
- Abstract
This work aimed to develop green biodegradable film using red seaweed (Kappaphycus alvarezii) as a base matrix and calcium carbonate (CaCO3) as a filler to enhance the properties of the red seaweed material for plasticulture purpose. CaCO3 which was produced by microbially induced precipitation (MB-CaCO3) using Bacillus sphaericus, was characterized and compared with the commercial CaCO3 (CCaCO3). FESEM image revealed that the size of MB-CaCO3 was smaller and more uniform compared to CCaCO3. FTIR and XRD analyses confirmed the existence of crystalline polymorph of calcite in MB-CaCO3, which contained a higher percentage of calcite than CCaCO3. However, the crystallinity and thermal stability of MB-CaCO3 was lower than CCaCO3. From the results of physical, mechanical and thermal properties of composite films filled with CCaCO3 and MB-CaCO3 fillers, the optimum loading of CCaCO3 and MB-CaCO3 was found at 0.1% and 0.15%, respectively. Composite films filled with MB-CaCO3 promote brighter film, better water barrier, hydrophobicity and biodegradability compared to CCaCO3. Since the effect of MB-CaCO3 on film functional properties was comparable to CCaCO3, it can be used as an alternative to CCaCO3 as inorganic filler for composite films in agriculture applications.
- Published
- 2018
3. A review on nanocellulosic fibres as new material for sustainable packaging: process and applications
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Abdul Khalil, H. P. S., Davoudpour, Y., Saurabh, Chaturbhuj K., Hossain, Md. S., Adnan, A. S., Dungani, R., Paridah, M. T., Islam Sarker, Md. Z., Nurul Fazita, M. R., Syakir, M. I., Haafiz, M. K. M., Abdul Khalil, H. P. S., Davoudpour, Y., Saurabh, Chaturbhuj K., Hossain, Md. S., Adnan, A. S., Dungani, R., Paridah, M. T., Islam Sarker, Md. Z., Nurul Fazita, M. R., Syakir, M. I., and Haafiz, M. K. M.
- Abstract
The demand for exploring advanced and eco-friendly sustainable packaging materials with superior physical, mechanical and barrier properties is increasing. The materials that are currently used in packaging for food, beverage, medical and pharmaceutical products, as well as in industrial applications, are non-degradable, and thus, these materials are raising environmental pollution concerns. Numerous studies have been conducted on the utilization of bio-based materials in the pursuit of developing sustainable packaging materials. Although significant improvements have been achieved, a balance among environmental concerns, economic considerations and product packaging performance is still lacking. This is likely due to bio-based materials being used in product packaging applications without a proper design. The present review article intends to summarize the information regarding the potential applications of cellulosic nanofiber for the packaging. The importance of the design process, its principles and the challenges of design process for sustainable packaging are also summarized in this review. Overall it can be concluded that scientists, designers and engineers all are necessarily required to contribute towards research in order to commercially exploit cellulose nanofiber for sustainable packaging.
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- 2016
4. Production and modification of nanofibrillated cellulose using various mechanical processes: a review
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Abdul Khalil, H. P. S., Davoudpour, Yalda, Islam, Md. Nazrul, Mustapha, Asniza, Sudesh, Kumar, Dungania, Rudi, Jawaid, Mohammad, Abdul Khalil, H. P. S., Davoudpour, Yalda, Islam, Md. Nazrul, Mustapha, Asniza, Sudesh, Kumar, Dungania, Rudi, and Jawaid, Mohammad
- Abstract
Nanofibrillated cellulose from biomass has recently gained attention owing to their biodegradable nature, low density, high mechanical properties, economic value and renewability. Although they still suffer from two major drawbacks. The first challenge is the exploration of raw materials and its application in nanocomposites production. Second one is high energy consumption regarding the mechanical fibrillation. However, pretreatments before mechanical isolation can overcome this problem. Hydrophilic nature of nano-size cellulose fibers restricts good dispersion of these materials in hydrophobic polymers and therefore, leads to lower mechanical properties. Surface modification before or after mechanical defibrillation could be a solution for this problem. Additionally, drying affects the size of nanofibers and its properties which needs to study further. This review focuses on recent developments in pretreatments, nanofibrillated cellulose production and its application in nanopaper applications, coating additives, security papers, food packaging, and surface modifications and also for first time its drying.
- Published
- 2014
5. Development and characterization of epoxy nanocomposites based on nano-structured oil palm ash.
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Abdul Khalil, H. P. S., Fizree, H. M, Bhat, Aamir H., Jawaid, Mohammad, Abdullah, Che Ku, Abdul Khalil, H. P. S., Fizree, H. M, Bhat, Aamir H., Jawaid, Mohammad, and Abdullah, Che Ku
- Abstract
The aim of this study is to utilize the bio-agricultural waste as filler material for composite production which are abundantly available and low cost compared to the silica, alumina etc. The lacks of sufficient scientific information about the utilization of the oil palm ash (OPA) on composites production were the driving force for the choice of this work. Furthermore, the effect of filler loading percentage on physical, mechanical, thermal and morphology properties of the epoxy nanocomposites were studied. It was concluded that the size of the OPA had been successfully reduced from macromolecular to the nano-size range by high energy ball milling and was confirmed by TEM analysis. The density of the nano-structured OPA filled epoxy composites revealed that increasing filler loading will eventually increase the density. The tensile and flexural strength attained maximum value when the filler loading was 3%. Also, increase in the thermal stability was observed in case of 3% filler loading and was attributed to the increase in cross-linking of the epoxy resin in the presence of nano-stuctured OPA and having minimum particle to particle interaction and well dispersed nanoparticles.
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- 2013
6. A Jatropha biomass as renewable materials for biocomposites and its applications.
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Abdul Khalil, H. P. S., N. A., Sri Aprilia, Bhat, Aamir H., Jawaid, Mohammad, Md. Tahir, Paridah, Rudie, D., Abdul Khalil, H. P. S., N. A., Sri Aprilia, Bhat, Aamir H., Jawaid, Mohammad, Md. Tahir, Paridah, and Rudie, D.
- Abstract
This review deals with the study of Jatropha biomass as renewable materials for biocomposites and its applications. Jatropha curcas is a multipurpose plant with many attributes and considerable potential. Jatropha plant is cultivated worldwide but it has specific cultivation area in Central and South America, Africa, and South Asia. The Jatropha plant produces many useful products, especially the seed from which oil can be extracted. Extracted oil has similar properties to palm oil and possible to obtain many products after processing. As biomass, Jatropha plant can used as a reinforcement in biocomposite development. Jatropha contain high amount of carbon especially in seed/husk, fruit shell and seed cake and can be used as filler in composite fabrication in the form of carbon black and activated carbon.In this review, we will discuss the distribution of Jatropha around the globe, chemical composition of various parts and extracts of Jatropha and their mechanical and physical properties. We will also cover the use of Jatropha biomass in various technical and biocomposite applications. With the development of green technology, Jatropha latex can be reduced to nanoparticle size. The chemical and physical properties of Jatropha contribute to its applications in food and non-food Products.
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- 2013
7. Potential materials for food packaging from nanoclay/natural fibres filled hybrid composites
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Majeed, Khaliq, Jawaid, Mohammad, Hassan, Azman, Abu Bakar, Aznizam, Abdul Khalil, H. P. S., Salema, Arshad Adam, Inuwa, Ibrahim Mohammed, Majeed, Khaliq, Jawaid, Mohammad, Hassan, Azman, Abu Bakar, Aznizam, Abdul Khalil, H. P. S., Salema, Arshad Adam, and Inuwa, Ibrahim Mohammed
- Abstract
The increasing demand for new food packaging materials which satisfy people requirements provided thrust for advancement of nano-materials science. Inherent permeability of polymeric materials to gases and vapours; and poor barrier and mechanical properties of biopolymers have boosted interest in developing new strategies to improve these properties. Research and development in polymeric materials coupled with appropriate filler, matrix-filler interaction and new formulation strategies to develop composites have potential applications in food packaging. Advancement in food packaging materials expected to grow with the advent of cheap, renewable and sustainable materials with enhanced barrier and mechanical properties. Nanoparticles have proportionally larger surface area and significant aspect ratio than their micro-scale counterparts, which promotes the development of mechanical and barrier properties. Nanocomposites are attracting considerable interest in food packaging because of these fascinating features. On the other hand, natural fibres are susceptible to microorganisms and their biodegradability is one of the most promising aspects of their incorporation in polymeric materials. Present review article explain about different categories of nanoclay and natural fibre based composite with particular regard to its applications as packaging materials and also gives an overview of the most recent advances and emerging new aspects of nanotechnology for development of hybrid composites for environmentally compatible food packaging materials.
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- 2013
8. The source of hydrogen sulfide in anoxic sediment
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Department of Environmental and Industrial Health, The University of Michigan, Ann Arbor, MI 48104, U.S.A., Dunnette, David A., Chynoweth, David P., Mancy, Khalil H., Department of Environmental and Industrial Health, The University of Michigan, Ann Arbor, MI 48104, U.S.A., Dunnette, David A., Chynoweth, David P., and Mancy, Khalil H.
- Abstract
Putrefactive hydrogen sulfide production in the upper 4 cm of sediment in two small freshwater and eutrophic Southeast Michigan, U.S.A., lakes ranged from 0.13 to 1.51 with an average of 0.46 mg S l-1 day-1. Sulfate reductive production of hydrogen sulfide at the same sites ranged from 0.7 to 3.2 with an average of 1.54 mg S l-1 day-1. Putrefactive hydrogen sulfide production represented 5.1-53% (average of 18.3-27.6%) of the total hydrogen sulfide produced at the two lakes over an April-October study period. 35S labeled substrates were used to estimate hydrogen sulfide production rates. Proteolytic bacteria averaged 2.2 x 104 cells ml-1 sediment whereas sulfate reducers averaged 4.8 x 102 cells ml-1 sediment. Putrefactive hydrogen sulfide production correlated highly with numbers of proteolytic bacteria (r2 = 0.84) but the correlation between sulfate reduction and sulfate reducing bacteria was low (r2 = 0.13). Interstitial soluble inorganic sulfate, protein and organic carbon were not closely correlated with hydrogen sulfide production rates or bacteria enumeration results. Natural substrate concentrations (Sn) used to estimate hydrogen sulfide production were supported by kinetic bioassay results.
- Published
- 2006
9. A transient current monitoring and electrode characterization system for a pulsed oxygen electrode
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Department of Electrical and Computer Engineering, The University of Michigan, Ann Arbor, Michigan 48109 U.S.A., The Environmental Chemistry Laboratory, School of Public Health. The University of Michigan, Ann Arbor, Michigan 48109 U.S.A., Wise, K.D., Smart, R.B., Mancy, Khalil H., Department of Electrical and Computer Engineering, The University of Michigan, Ann Arbor, Michigan 48109 U.S.A., The Environmental Chemistry Laboratory, School of Public Health. The University of Michigan, Ann Arbor, Michigan 48109 U.S.A., Wise, K.D., Smart, R.B., and Mancy, Khalil H.
- Abstract
Non-steady state voltammetry has been applied to membrane electrodes to provide improved sensitivity as well as independence of stirring. This paper describes a new instrumentation system based on complementary metal oxide--silicon technology for the characterization of a pulsed oxygen electrode. The system provides the necessary timing, analog-to-digital conversion, and digital display of the transient current.
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- 2006
10. Characterization of trace metal species and measurement of trace metal stability constants by electrochemical techniques
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Environmental Chemistry Laboratory, Department of Environmental and Industrial Health. School of Public Health, The University of Michigan, Ann Arbor, MI 48104, U.S.A., Ernst, R., Allen, H.E., Mancy, Khalil H., Environmental Chemistry Laboratory, Department of Environmental and Industrial Health. School of Public Health, The University of Michigan, Ann Arbor, MI 48104, U.S.A., Ernst, R., Allen, H.E., and Mancy, Khalil H.
- Abstract
Differential pulse polarography and differential pulse anodic stripping voltammetry were used to determine copper, lead, cadmium and zinc complexes of relevance to environmental conditions. The dependency of peak current on pH and alkalinity was interpreted in terms of the variation in the metal species present. Stability constants of copper and lead complexes with carbonate were determined from the magnitude of the shift of peak potential using the method of Lingane. Inclusion of the transfer coefficient, calculated from the peak half-width for electrochemically irreversible systems, was used to determine the stability constant. By using both electroanalytical techniques, the investigator validates the correctness of his results without needing to rely on prior determinations of the stability constant for verification.
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- 2006
11. Antibacterial properties enhancement tropical fruit waste biopolymer hydrogel loaded Nephelium Lappaceum leaf extract for sanitizing applications.
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Thakur S, Hosny KM, Alissa M, Bairwan RD, Yahya EB, Sabri M, Rizg WY, Alghamdi MA, and Abdul Khalil HPS
- Subjects
- Biopolymers chemistry, Biopolymers pharmacology, Staphylococcus aureus drug effects, Spectroscopy, Fourier Transform Infrared, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents chemistry, Hydrogels chemistry, Plant Leaves chemistry, Plant Extracts chemistry, Plant Extracts pharmacology, Fruit chemistry, Sapindaceae chemistry, Microbial Sensitivity Tests, Escherichia coli drug effects
- Abstract
Current alcohol-based sanitizers present safety concerns and are not suitable for all applications. To address the issue, biopolymer hydrogels offer a safer, sustainable alternative due to biocompatibility, biodegradability, and customizable properties. In present study, carboxymethyl cellulose (CMC) was prepared from Durian fruit rind, a tropical fruit byproduct rich in polysaccharides and combined with the synthetic polymer Carbopol to form a hydrogel with homogenization technique. Rambutan (Nephelium lappaceum) leaf extract (RLE) as an antibacterial agent was analyzed for functional, morphological, antibacterial, and structural properties. Phytochemical analysis of RLE confirmed the presence of antibacterial compounds, while Minimum Inhibitory Concentrations (MIC) were 33.3 μg/mL for Escherichia coli and 28.5 μg/mL for Staphylococcus aureus. Additionally, Scanning Electron Microscopy showed significant disruptions in bacterial cell walls. Hydrogel incorporated RLE was produced with improved properties confirmed through viscosity, FT-IR, Disc-diffusion assay and spread plate method analysis. In general, Rambutan leaf extract significantly improves the antibacterial properties of biopolymer-based hydrogels, hence offering a promising, eco-friendly alternative to alcohol-based sanitizers., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier B.V.)
- Published
- 2024
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12. "How-to": scoping review?
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Pollock D, Evans C, Menghao Jia R, Alexander L, Pieper D, Brandão de Moraes É, Peters MDJ, Tricco AC, Khalil H, Godfrey CM, Saran A, Campbell F, and Munn Z
- Abstract
Background and Objective: Scoping reviews are a type of evidence synthesis that aims to identify and map the breadth of evidence available on a particular topic, field, concept, or issue, within or across a defined context or contexts. Scoping reviews can contribute to clinical practice guideline development, policy making, reduce research waste by eliminating duplication of research effort, and be a precursor to a systematic review or inform further primary research. This article aims to provide a brief introduction of how to conduct and report scoping reviews., Study Design and Setting: We will discuss the role and value of scoping reviews within the evidence synthesis ecosystem, the differences and similarities between these reviews and other types of evidence syntheses such as systematic reviews, mapping reviews, evidence and gap maps, and overviews, and how to overcome common challenges often associated in the conduct, reporting, and dissemination of scoping reviews., Results: Scoping reviews have a role in the evidence ecosystem; however, we need to acknowledge their challenges., Conclusion: Scoping reviews are a popular form of evidence synthesis, and further research is needed to provide clarity of current methodological challenges., Competing Interests: Declaration of competing interest Andrea Tricco is the co-Editor-in-Chief of JCE but not involved with publication decisions. There are no further declarations of interest., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
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- 2024
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13. Large scoping reviews: managing volume and potential chaos in a pool of evidence sources.
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Alexander L, Cooper K, Peters MDJ, Tricco AC, Khalil H, Evans C, Munn Z, Pieper D, Godfrey CM, McInerney P, and Pollock D
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- Humans, Research Design, Review Literature as Topic
- Abstract
Scoping reviews can identify a large number of evidence sources. This commentary describes and provides guidance on planning, conducting, and reporting large scoping reviews. This guidance is informed by experts in scoping review methodology, including JBI (formerly Joanna Briggs Institute) Scoping Review Methodology group members, who have also conducted and reported large scoping reviews. We propose a working definition for large scoping reviews that includes approximately 100 sources of evidence but must also consider the volume of data to be extracted, the complexity of the analyses, and purpose. We pose 6 core questions for scoping review authors to consider when planning, developing, conducting, and reporting large scoping reviews. By considering and addressing these questions, scoping review authors might better streamline and manage the conduct and reporting of large scoping reviews from the planning to publishing stage., Competing Interests: Declaration of competing interest A.C.T. is funded by a Tier 2 Canada Research Chair in Knowledge Synthesis. Z.M. is supported by an NHMRC investigator grant APP1195676., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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14. The role of scoping reviews in guideline development.
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Pollock DK, Khalil H, Evans C, Godfrey C, Pieper D, Alexander L, Tricco AC, McInerney P, Peters MDJ, Klugar M, Falavigna M, Stein AT, Qaseem A, de Moraes EB, Saran A, Ding S, Barker TH, Florez ID, Jia RM, and Munn Z
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- Humans, Systematic Reviews as Topic methods, Review Literature as Topic, Practice Guidelines as Topic
- Abstract
Competing Interests: Declaration of competing interest ACT is the Editor in Chief and IF is part of the editorial board of the Journal of Clinical Epidemiology, but they did not participate in the editorial process of this article and had no influence on the editorial decisions related to it.
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- 2024
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15. Initial Chemotherapy for Locally Advanced and Metastatic NUT Carcinoma.
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Luo J, Sanchez M, Lee E, Hertzler H, Luong N, Mazzola E, Finstein B, Tamen R, Brisbane G, Nguyen T, Paik PK, Chaft JE, Cheng ML, Khalil H, Piha-Paul SA, Sholl LM, Nishino M, Jänne PA, DuBois SG, Hanna GJ, Shapiro GI, and French CA
- Subjects
- Humans, Female, Male, Middle Aged, Adult, Aged, Aged, 80 and over, Young Adult, Adolescent, Child, Ifosfamide administration & dosage, Ifosfamide therapeutic use, Survival Rate, Nuclear Proteins genetics, Lung Neoplasms drug therapy, Lung Neoplasms pathology, Lung Neoplasms mortality, Antineoplastic Combined Chemotherapy Protocols therapeutic use
- Abstract
Introduction: NUT carcinoma (NC) is an underdiagnosed and aggressive poorly differentiated or squamous cell cancer. A subset of NC is sensitive to chemotherapy, but the optimal regimen is unknown. Experts have recommended platinum- and ifosfamide-based therapy based on case reports., Methods: Patients with pathologically confirmed NC with known survival outcomes after chemotherapy and consented to participate in a worldwide registry were studied. Results were summarized using descriptive methods., Results: The study included 118 patients with NC. Median age was 34 (range: 1-82) years, 39% were women, and 61% harbored a BRD4::NUTM1 fusion. Patients received platinum (74%) or ifosfamide (26%, including regimens with both, 13%). Of 62 patients with nonmetastatic disease, 40% had a thoracic primary. Compared with platinum-based chemotherapy, patients who received ifosfamide-based chemotherapy had nominally higher progression-free survival (12 mo: 59% [95% CI: 32-87] versus 37% [95% CI: 22-52], hazard ratio = 0.68 [0.32, 1.42], p = 0.3) but not overall survival (OS). Among the 56 patients with metastatic disease, 80% had a thoracic primary. Ifosfamide had an objective response rate (ORR) of 75% (six of eight) and platinum had an ORR of 31% (11 of 36). Nevertheless, there was no difference in progression-free survival or OS. The 3-year OS of the entire cohort was 19% (95% CI: 10%-28%). Of the 11 patients alive greater than 3 years, all presented with nonmetastatic and operable or resectable disease., Conclusion: There is a numerically higher ORR for ifosfamide-based therapy compared with platinum-based therapy, with limited durability. OS at 3 years is only 19%, and development of effective therapies is an urgent unmet need for this patient population., Competing Interests: Disclosure Dr. Luo reports receiving research support to her institution from Erasca, Genentech, Kronos Bio, Novartis, and Revolution Medicines; receiving honoraria from Targeted Oncology, Physicians’ Education Resource, VJ Oncology, Cancer GRACE, and Community Cancer Education, Inc.; having advisory board participation from Astellas, AstraZeneca, and Amgen; receiving personal fees from Erasca, Blueprint Medicines, and Daiichi Sankyo; and having a pending patent filed by Memorial Sloan Kettering related to multimodal features to predict response to immunotherapy (PCT/US2023/115872). Dr. Paik receives compensation for consulting or advisory board participation from Bicara Therapeutics, Inc., EMD Serono, Inc., Novartis, Mirati Therapeutics, and Janssen; and receives honoraria for participation in CME educational programs from IDEOlogy, Excerpta Medica, PeerVoice, Physicians Education Resource, Medscape, Agile, Axis Medical Education, Aptitude Health, MJH, Annenberg Center, Cardinal Health, and Touch Independent Medical Education Ltd. Dr. Chaft has served as a consultant for AstraZeneca, Bristol-Myers Squib, Genentech, Merck, Flame Biosciences, Novartis, Regeneron-Sanofi, Guardant Health, and Janssen; and has received research funding to her institution from AstraZeneca, Bristol-Myers Squib, Genentech, and Merck. Dr. Cheng reports receiving honoraria from Lynx Group, WebMD, and Potomac Center for Medical Education; having consulting or advisory role for AstraZeneca, Boehringer Ingelheim, Mirati Therapeutics, Cepheid, Janssen, and Pfizer; receiving research funding from Palleon Pharmaceuticals (Inst); and receiving travel, accommodations, and expenses from Daiichi Sankyo, AstraZeneca, and Genzyme. Dr. Piha-Paul reports receiving clinical trial research support/grant funding through the institution from AbbVie, Inc., ABM Therapeutics, Inc., Acepodia, Inc., Alkermes, Aminex Therapeutics, BioMarin Pharmaceutical, Inc., Boehringer Ingelheim, Bristol-Myers Squib, Cerulean Pharma, Inc., Chugai Pharmaceutical Co., Ltd., Curis, Inc., Cyclacel Pharmaceuticals, Daiichi Sankyo, Eli Lilly, ENB Therapeutics, Epigenetix Inc., Five Prime Therapeutics, F-Star Beta Limited, F-Star Therapeutics, Gene Quantum, Genmab A/S, Gilead Sciences, Inc., GlaxoSmithKline, Helix BioPharma Corp., Hengrui Pharmaceuticals, Co., Ltd., HiberCell, Inc., Immorna Biotherapeutics, Inc., Immunomedics, Inc., Incyte Corp., Jacobio Pharmaceuticals Co., Ltd., Jiangsu Simcere Pharmaceutical Co., Ltd., Loxo Oncology, Inc., Lytix Biopharma AS, Medimmune, LLC, Medivation, Inc., Merck Sharp and Dohme Corp., Nectin Therapeutics, Ltd., Novartis Pharmaceuticals, Nurix, Pieris Pharmaceuticals, Inc., Pfizer, Phanes Therapeutics, Principia Biopharma, Inc., Puma Biotechnology, Inc., Purinomia Biotech, Inc., Rapt Therapeutics, Inc., Replimune, Roche/Blueprint, Seattle Genetics, Silverback Therapeutics, Shasqi, Inc., Synlogic Therapeutics, Taiho Oncology, Tesaro, Inc., Theradex Oncology, Toragen Therapeutics, Inc., TransThera Bio, Xencor, Inc., ZielBio, Inc., NCI/NIH, and P30CA016672 – Core Grant (CCSG Shared Resources); and having consulting for CRC Oncology. Dr. Sholl reports receiving research support to her institution from Genentech; and consulting from GV20 Therapeutics, Genentech, and Lilly. Dr. Nishino reports having consulting for AstraZeneca; and receiving research grants to the institution from Canon Medical Systems, AstraZeneca, Daiichi Sankyo, and Konica-Minolta. Dr. Jänne reports receiving grants from The Mark Foundation for Cancer Research and the American Cancer Society during the conduct of the study; personal fees outside of submitted work from Boehringer Ingelheim, Pfizer, Roche/Genentech, Chugai Pharmaceuticals, Ignyta, LOXO Oncology, Eli Lilly, SFJ Pharmaceuticals, Voronoi, Daiichi Sankyo, Biocartis, Novartis, Sanofi, Takeda Oncology, Transcenta, Silicon Therapeutics, Syndax, Nuvalent, Bayer, Esai, and Mirati Therapeutics; and grants outside the submitted work from Boehringer Ingelheim, Eli Lilly, Daiichi Sankyo, Takeda Oncology, PUMA, Astellas Pharmaceuticals, and Revolution Medicines. Dr. DuBois reports receiving honoraria or having advisory board participation from Amgen, Bayer, and Jazz Pharmaceuticals; and receiving travel expenses from LOXO Oncology, Roche, and Salarius, all outside the submitted work. Dr. Hanna reports receiving grants/contracts outside the submitted work from ACCRF, Actuate Therapeutics, ASCO CCF, Bicara, Bristol-Myers Squibb, Elevar Therapeutics, Exicure, Gateway for Cancer Research, Genentech, GlaxoSmithKline, ImmunityBio, Kartos, Kite, KSQ, Kura Oncology, Regeneron, Repertoire, Sanofi Genzyme, Secura Bio, and V Foundation; and having advisory role and/or receiving honoraria outside the submitted work from Bicara, Bio-Rad, Boxer Capital, Bristol-Myers Squibb, Coherus, Elevar, Exicure, General Catalyst, Guardian Bio, KSQ, Kura Oncology, Massachusetts Medical Society, Merck, Naveris, Nextech, Prelude, Rain, Regeneron, Remix, Replimune, Sanofi Genzyme, SIRPant, and Surface Oncology. Dr. Shapiro reports receiving personal fees from Merck KGaA/EMD-Serono, Bicycle Therapeutics, Cybrexa Therapeutics, Boehringer Ingelheim, Bayer, ImmunoMet, Concarlo Holdings, Syros, Zentalis, CytomX Therapeutics, Blueprint Medicines, Kymera Therapeutics, Janssen, Xinthera, and Artios; receiving grants from Merck KGaA/EMD-Serono, Tango, Bristol-Myers Squibb, Pfizer, and Eli Lilly; and having a patent for “Dosage regimen for sapacitabine and seliciclib” issued to Cyclacel Pharmaceuticals and GIS and a patent for “Compositions and methods for predicting response and resistance to CDK4/6 inhibition” issued to Liam Cornell and GIS. Dr. French reports receiving research funding from Boehringer Ingelheim and consultant fees from Boehringer Ingelheim. The remaining authors declare no conflict of interest., (Copyright © 2023 International Association for the Study of Lung Cancer. Published by Elsevier Inc. All rights reserved.)
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- 2024
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16. Novel enhancement of interfacial interaction and properties in biodegradable polymer composites using green chemically treated spent coffee ground microfiller.
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Majrashi MAA, Bairwan RD, Mushtaq RY, Khalil HPSA, Badr MY, Alissa M, Abdullah CK, Ali BA, Rizg WY, and Hosny KM
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- Green Chemistry Technology, Biodegradable Plastics chemistry, Coffee chemistry, Polyesters chemistry, Polyhydroxybutyrates
- Abstract
This study investigates the potential of utilizing green chemically treated spent coffee grounds (SCGs) as micro biofiller reinforcement in Poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) biopolymer composites. The aim is to assess the impact of varying SCG concentrations (1 %, 3 %, 5 %, and 7 %) on the functional, thermal, mechanical properties and biodegradability of the resulting composites with a PHBV matrix. The samples were produced through melt compounding using a twin-screw extruder and compression molding. The findings indicate successful dispersion and distribution of SCGs microfiller into PHBV. Chemical treatment of SCG microfiller enhanced the interfacial bonding between the SCG and PHBV, evidenced by higher water contact angles of the biopolymer composites. Field Emission Scanning Electron Microscopy (FE-SEM) confirmed the successful interaction of treated SCG microfiller, contributing to enhanced mechanical characteristics. A two-way ANOVA was conducted for statistical analysis. Mass losses observed after burying the materials in natural soil indicated that the composites degraded faster than the pure PHBV polymer suggesting that both composites are biodegradable, particularly at high levels of spent coffee grounds (SCG). Despite the possibility of agglomeration at higher concentrations, SCG incorporation resulted in improved functional properties, positioning the green biopolymer composite as a promising material for sustainable packaging and diverse applications., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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17. Novel eco-friendly polylactic acid nanocomposite integrated membrane system for sustainable wastewater treatment: Performance evaluation and antifouling analysis.
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Cairone S, Hegab HM, Khalil H, Nassar L, Wadi VS, Naddeo V, and Hasan SW
- Abstract
Water contamination caused by heavy metals, nutrients, and organic pollutants of varying particle sizes originating from domestic and industrial processes poses a significant global challenge. There is a growing concern, particularly regarding the presence of heavy metals in freshwater sources, as they can be toxic even at low concentrations, posing risks to human health and the environment. Currently, membrane technologies are recognized as effective and practical for treating domestic and industrial wastewater. However, these technologies are hindered by fouling issues. Furthermore, the utilization of conventional membranes leads to the accumulation of non-recyclable synthetic polymers, commonly used in their production, resulting in adverse environmental consequences. In light of our previously published studies on environmentally friendly, biodegradable polylactic acid (PLA) nanocomposite mixed matrix membranes (MMMs), we selected two top-performing PLA-based ultrafiltration nanocomposite membranes: one negatively charged (PLA-M
- ) and one positively charged (PLA-M+ ). We integrated these membranes into systems with varying arrangements to control fouling and eliminate heavy metals, organic pollutants, and nutrients from raw municipal wastewater collected by the local wastewater treatment plant in Abu Dhabi (UAE). The performance of two integrated systems (i.e., PLA-M+ /PLA-M- and PLA-M- /PLA-M+ ) was compared in terms of permeate flux, contaminant removal efficiencies, and fouling mitigation. The PLA-M+ /PLA-M- system achieved removal efficiencies of 79.6 %, 92.6 %, 88.7 %, 85.2 %, 98.9 %, 94 %, 83.3 %, and 98.3 % for chemical oxygen demand (COD), nitrate (NO3 - -N), phosphate (PO4 3- -P), ammonium (NH4 + -N), iron (Fe), zinc (Zn), nickel (Ni), and copper (Cu), respectively. On the other hand, the PLA-M- /PLA-M+ system recorded removal efficiencies of 85.8 %, 95.9 %, 100 %, 81.9 %, 99.3 %, 91.9 %, 72.9 %, and 98.9 % for COD, NO3 - -N, PO4 3- -P, NH4 + -N, Fe, Zn, Ni, and Cu, respectively. Notably, the PLA-M- /PLA-M+ system demonstrated superior antifouling resistance, making it the preferred integrated system. These findings demonstrate the potential of eco-friendly PLA nanocomposite UF-MMMs as a promising alternative to petroleum-based polymeric membranes for efficient and sustainable wastewater treatment., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)- Published
- 2024
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18. Bioadsorbent nanocellulose aerogel efficiency impregnated with spent coffee grounds.
- Author
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Ahmad A, Omar KM, Alahmadi AA, Rizg WY, Bairwan RD, and Abdul Khalil HPS
- Subjects
- Adsorption, Environment, Hydroxyl Radical, Methylene Blue, Coffee, Cellulose
- Abstract
Due to growing environmental concerns for better waste management, this study proposes developing a composite aerogel using cellulose nanofibers (CNF) and spent coffee grounds (SCG) through an eco-friendly method for efficient methylene blue (MB) adsorption. Adding SCG to the CNF aerogel altered the physical properties: it increases the volume (4.14 cm
3 to 5.25 cm3 ) and density (0.018 to 0.022 g/cm3 ) but decrease the water adsorption capacity (2064 % to 1635 %). FTIR spectrum showed distinct functional groups in both all aerogels, showing hydroxyl, glyosidic bonds, and aromatic compounds. Additionally, SCG improved thermal stability of the aerogels. In term of adsorption efficacy, CNF-SCG40% aerogel as exceptionally well. According to Langmuir isotherm models, the adsorption of MB happened in a monolayer, with CNF-SCG40% showing a maximum adsorption capacity of 113.64 mg/g, surpassing CNF aerogel (58.82 mg/g). The study identified that the pseudo-second-order model effectively depicted the adsorption process, indicating a chemical-like interaction. This investigation successfully produced a single-use composite aerogel composed of CNF and SCG using an eco-friendly approach, efficiently adsorbing MB. By utilizing cost-effective materials and eco-friendly methods, this approach offers a sustainable solution for waste management, contributes to an eco-friendly industrial environment, and reduces production expenses and management costs., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)- Published
- 2024
- Full Text
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19. Sustainable lignin nanoparticles from coconut fiber waste for enhancing multifunctional properties of macroalgae biofilms.
- Author
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Alfatah T and Abdul Khalil HPS
- Subjects
- Lignin, Cocos, Biofilms, Water, Nanoparticles, Seaweed
- Abstract
Multifunctional and sustainable packaging biofilms felicitous to changeable conditions are in large demand as substitutes to petroleum-derived synthetic films. Macroalgae with noticeable film-formation, abundant, low-cost, and edible properties is a promising bioresource for sustainable and eco-friendly packaging materials. However, the poor hydrophobicity and mechanical properties of sustainable macroalgae biofilms seriously impede their practical applications. Herein, lignin nanoparticles (LNPs) produced by a sustainable approach from black liquor of coconut fiber waste were incorporated in the macroalgae matrix to improve the water tolerance and mechanical characteristics of the biofilms. The effect of different LNPs loadings on the performance of biofilms, such as physical, morphological, surface roughness, structural, water resistance, mechanical, and thermal behaviors, were systematically evaluated and found to be considerably improved. Biofilm with 6 % LNPs presented the optimum enhancement in most ultimate performances. The optimized biofilm exhibited great hydrophobic features with a water contact angle of over 100° and high enhancement in the tensile strength of >60 %. This study proposes a facile and sustainable approach for designing and developing LNPs-macroalgae biofilms with excellent and multifunctional properties for sustainable high-performance packaging materials., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
20. Effect of thermal manipulation on embryonic development, hatching process, and chick quality under heat-stress conditions.
- Author
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Iraqi E, Hady AA, Elsayed N, Khalil H, El-Saadany A, and El-Sabrout K
- Subjects
- Animals, Female, Ovum, Embryonic Development, Body Weight, Chickens, Hot Temperature
- Abstract
Thermal stress is a risk that threatens poultry welfare and productivity. Thermal manipulation during egg incubation is considered a prevention strategy used to mitigate the detrimental effects of high ambient temperatures on birds. This study aimed to investigate the impact of thermal manipulation, applied to chicken breeder's eggs during the incubation period, on embryonic development, hatching characteristics, and chick quality, as well as posthatch thermotolerance and performance. A total of 1,200 fertile eggs were randomly and equally assigned into 2 groups of 3 replicates (200 eggs/replicate), using a randomized experimental design followed by t test. The first group eggs (G1) were subjected to a commercial setter temperature of 37.5°C with 55% relative humidity (RH) throughout the incubation period (1-18 d) and served as a control, while the second group eggs (G2) were treated the same commercial setter conditions until the 11
th day of the incubation, then the eggs were exposed to a higher temperature of 39.5°C with 60% RH for 4 h daily from the 12th to the 18th day of incubation. All eggs in both groups were exposed to the same temperature condition of 37.2°C with 70% RH from the 19th to the 22nd days of the incubation (hatching period). Three hundred hatched female chicks per each treatment group were transferred into a closed-system house and distributed randomly into 20 floor pens (15 birds per pen). At the 8th week of age, birds were exposed to a daily heat challenge by raising the temperature to 35°C for 6 h until the 18th week of the chick's age. According to the results, thermal manipulation at 12 to 18 d of egg incubation positively (P ≤ 0.05) affected several studied traits. It improved some embryonic development traits, such as embryonic weight and tibia length, as well as some hatching parameters, such as hatching time and pipped eggs. It also improved hatched chick quality traits, including the chick's weight, length, and activity. In addition, it enhanced the posthatch chick's thermotolerance and body weight. Hatched chicks of G2 had significantly (P ≤ 0.05) higher total protein, albumin, IgM, glucose, calcium, total antioxidant, and T3 than G1 chicks. They also had significantly (P = 0.001) higher body weight (23%) at the 18th week of age than G1, as well as a lower feed conversion ratio (20.71%) than G1 chicks at 8 to 18 wk of age. Therefore, it is recommended to apply thermal manipulation during egg incubation, particularly at 12 to 18 d, for its positive effects on the pre- and posthatch performance., (Copyright © 2023. Published by Elsevier Inc.)- Published
- 2024
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21. Synthesis and characterization of sago starch nanocrystal laurate as a food grade particle emulsifier.
- Author
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Ahmad A, Fazial FF, Khalil HPSA, Fazry S, and Lazim A
- Subjects
- Emulsions chemistry, Laurates, Particle Size, Emulsifying Agents chemistry, Chlorides, Starch chemistry, Nanoparticles chemistry
- Abstract
Starch nanocrystals (SNCs) are tiny particles that possess unique qualities due to their small size, such as increased crystallinity, thin sheet structure, low permeability, and strong resistance to digestion. Although sago starch nanocrystals (SNCs) are naturally hydrophilic, their properties can be modified through chemical modifications to make them more versatile for various applications. In this study, the esterification process was used to modify SNCs using lauroyl chloride (LC) to enhance their surface properties. Three different ratios of LC to SNC were tested to determine the impact on the modified SNC (mSNC). The chemical changes in the mSNC were analyzed using FTIR and
1 H NMR spectroscopy. ##The results showed that as the amount of LC increased, the degree of substitution (DS) also increased, which reduced the crystallinity of the mSNC and its thermal stability. However, the esterification process also improved the hydrophobicity of the SNC, making it more amphiphilic. The emulsification capabilities of the mSNC were investigated using a Pickering emulsion, and the results showed that the emulsion made from mSNC-1.0 had better stability than the one made from pristine SNC. This study highlights the potential of SNC as a particle emulsifier and demonstrates how esterification can improve its emulsification capabilities., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)- Published
- 2023
- Full Text
- View/download PDF
22. Systematic reviewers used various approaches to data extraction and expressed several research needs: a survey.
- Author
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Büchter RB, Rombey T, Mathes T, Khalil H, Lunny C, Pollock D, Puljak L, Tricco AC, and Pieper D
- Subjects
- Humans, Systematic Reviews as Topic, Surveys and Questionnaires, Automation, Software
- Abstract
Objective: Data extraction is a prerequisite for analyzing, summarizing, and interpreting evidence in systematic reviews. Yet guidance is limited, and little is known about current approaches. We surveyed systematic reviewers on their current approaches to data extraction, opinions on methods, and research needs., Study Design and Setting: We developed a 29-question online survey and distributed it through relevant organizations, social media, and personal networks in 2022. Closed questions were evaluated using descriptive statistics, and open questions were analyzed using content analysis., Results: 162 reviewers participated. Use of adapted (65%) or newly developed extraction forms (62%) was common. Generic forms were rarely used (14%). Spreadsheet software was the most popular extraction tool (83%). Piloting was reported by 74% of respondents and included a variety of approaches. Independent and duplicate extraction was considered the most appropriate approach to data collection (64%). About half of respondents agreed that blank forms and/or raw data should be published. Suggested research gaps were the effects of different methods on error rates (60%) and the use of data extraction support tools (46%)., Conclusion: Systematic reviewers used varying approaches to pilot data extraction. Methods to reduce errors and use of support tools such as (semi-)automation tools are top research gaps., Competing Interests: Declaration of competing interest Andrea Tricco is Co-Editor-in-Chief of the JCE., (Copyright © 2023 Elsevier Inc. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
23. Differentiating between mapping reviews and evidence gap maps.
- Author
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Khalil H and Tricco AC
- Subjects
- Humans, Evidence Gaps, Outcome Assessment, Health Care
- Published
- 2023
- Full Text
- View/download PDF
24. Lipid profile in Parkinson's disease: The potential role of brain-derived neurotrophic factor.
- Author
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Alomari MA, Khalil H, Khabour OF, and Alzoubi KH
- Subjects
- Humans, Cholesterol, LDL, Brain-Derived Neurotrophic Factor, Cross-Sectional Studies, Cholesterol, HDL, Parkinson Disease, Neurodegenerative Diseases
- Abstract
Background: Parkinson's disease is a neurodegenerative disease manifested as increased tremor, bradykinesia, rigidity, and postural instability. Brain-derived neurotrophic factor (BDNF) is essential for neurocognitive function. However, its cardiometabolic effect has recently been identified in health and disease, but not in PD. Therefore, the current study examined the relationship of BDNF with glucose and lipid profile., Methods: This was a cross sectional comparative study where PD patients (n = 26) and age-matched healthy controls (n = 27) were recruited. Blood samples were drawn to determine BDNF, glucose, and lipid profile including total cholesterol (TC), HDL, LDL, triglyceride (TriG)., Result: The linear regression showed that BDNF predicted 11.9 % of TC (p = 0.05), 3.0 % of HDL (p = 0.003), 27.3 % of LDL (p = 0.006), 16.6 % of TriG (p = 0.04), 15.8 % of TC/HDL (p = 0.06), 22.1 % of TC/LDL (p = 0.01), and 35.1 % of TriG/HDL (p = 0.001) but not glucose (B = -0.006; CI = -0.19/0.18; F = 0.005; p = 0.9) and LDL/HDL (B = 0.06; CI = -0.17/0.3; F = 0.3; p = 0.6). Subsequent ANCOVA revealed differences (p < 0.05) in TC, HDL, LDL, TC/LDL, and TriG/HDL but not in glucose, TriG, and TC/HDL among the patients with low-BDNF versus high-BDNF., Significance: The results demonstrate a relationship of BDNF with lipid profile suggesting the importance of BDNF for lipid metabolism in PD., Competing Interests: Declaration of competing interest None., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
25. Contribution of the Opioid System to the Antidepressant Effects of Fluoxetine.
- Author
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Carazo-Arias E, Nguyen PT, Kass M, Jee HJ, Nautiyal KM, Magalong V, Coie L, Andreu V, Gergues MM, Khalil H, Akil H, Arcego DM, Meaney M, Anacker C, Samuels BA, Pintar JE, Morozova I, Kalachikov S, and Hen R
- Subjects
- Mice, Animals, Corticosterone, Receptors, Opioid, delta genetics, Antidepressive Agents pharmacology, Antidepressive Agents therapeutic use, Selective Serotonin Reuptake Inhibitors pharmacology, Mice, Knockout, Fluoxetine pharmacology, Analgesics, Opioid pharmacology
- Abstract
Background: Selective serotonin reuptake inhibitors such as fluoxetine have a limited treatment efficacy. The mechanism by which some patients respond to fluoxetine while others do not remains poorly understood, limiting treatment effectiveness. We have found the opioid system to be involved in the responsiveness to fluoxetine treatment in a mouse model for anxiety- and depressive-like behavior., Methods: We analyzed gene expression changes in the dentate gyrus of mice chronically treated with corticosterone and fluoxetine. After identifying a subset of genes of interest, we studied their expression patterns in relation to treatment responsiveness. We further characterized their expression through in situ hybridization and the analysis of a single-cell RNA sequencing dataset. Finally, we behaviorally tested mu and delta opioid receptor knockout mice in the novelty suppressed feeding test and the forced swim test after chronic corticosterone and fluoxetine treatment., Results: Chronic fluoxetine treatment upregulates proenkephalin expression in the dentate gyrus, and this upregulation is associated with treatment responsiveness. The expression of several of the most significantly upregulated genes, including proenkephalin, is localized to an anatomically and transcriptionally specialized subgroup of mature granule cells in the dentate gyrus. We have also found that the delta opioid receptor contributes to some, but not all, of the behavioral effects of fluoxetine., Conclusions: These data indicate that the opioid system is involved in the antidepressant effects of fluoxetine, and this effect may be mediated through the upregulation of proenkephalin in a subpopulation of mature granule cells., (Copyright © 2022 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
26. The role of scoping reviews in reducing research waste.
- Author
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Khalil H, Peters MDJ, McInerney PA, Godfrey CM, Alexander L, Evans C, Pieper D, Moraes EB, Tricco AC, Munn Z, and Pollock D
- Subjects
- Humans, Research Personnel, Research Design
- Abstract
Objectives: Scoping reviews and evidence map methodologies are increasingly being used by researchers. The objective of this article is to examine how scoping reviews can reduce research waste., Study Design and Setting: This article summarizes the key issues facing the research community regarding research waste and how scoping reviews can make an important contribution to the reduction of research waste in both primary and secondary research., Results: The problem of research waste is an enduring challenge for global health, leading to a waste of human and financial resources and producing research outputs that do not provide answers to the most pressing research questions. Research waste occurs within primary research but also in secondary research such as evidence syntheses. The focus of scoping reviews on characterizing the nature of existing evidence on a topic and including all types of evidence, potentially reduces research waste in five ways: (1) identifying key research gaps on a topic, (2) determining appropriate outcome measures, (3) mapping existing methodological approaches, (4) developing a consistent understanding of terms and concepts used in existing evidence, and (5) ensuring scoping reviews do not exacerbate the issue of research waste., Conclusion: To ensure that scoping reviews do not themselves end up contributing to research waste, it is important to register the scoping review and to ensure that international reporting standards and methodological guidance are followed., (Crown Copyright © 2022. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
27. JBI series paper 3: The importance of people, process, evidence, and technology in pragmatic, healthcare provider-led evidence implementation.
- Author
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Lockwood C, Munn Z, Jordan Z, Pilla B, Püschel VAA, Dos Santos KB, Albornos-Muñoz L, Kent B, Mu PF, Khalil H, McArthur A, Porritt K, Cooper A, Sfetcu R, and Lizarondo L
- Subjects
- Humans, Evidence-Based Practice, Technology, Communication, Health Personnel, Delivery of Health Care
- Abstract
In this paper, we describe and discuss evidence implementation as a venture in global human collaboration within the framework of "people, process, evidence, and technology" as a roadmap for navigating implementation. At its core implementation is not a technological, or theoretical process, it is a human process. That health professionals central to implementation activities may not have had formal training in implementation, highlights the need for processes and programs that can be integrated within healthcare organization structures. Audit with feedback is an accessible implementation approach that includes the capacity to embed theory, frameworks, and bottom-up change processes to improve the quality of care. In this third paper in the JBI series, we discuss how four overarching principals necessary for sustainability (Culture, Capacity, Communication, and Collaboration) are combined with evidence, technology, and resources for evidence-based practice change. This approach has been successfully used across hundreds of evidence implementation projects around the globe for over 15 years. We present healthcare practitioner-led evidence-based practice improvement as sustainable and achievable in collaborative environments such as the global JBI network as a primary interest of the practicing professions and provide an overview of the JBI approach to evidence implementation., (Copyright © 2022 Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
28. Differentiating between mapping reviews and scoping reviews in the evidence synthesis ecosystem.
- Author
-
Khalil H and Tricco AC
- Subjects
- Humans, Research Personnel, Ecosystem, Research Design
- Abstract
Background and Objectives: Scoping reviews, mapping reviews, and evidence map methodologies are increasingly used by researchers. The objective of this article is to outline the main difference between these types of evidence synthesis to improve their conduct., Methods: This article summarizes the key issues facing reviewers, who conduct scoping reviews, mapping reviews, and evidence maps and those who use the results and may engage in consultations during their development., Results: Several differences exist between the methodologies, and these are in their protocol development, scope, inclusion criteria, data extraction, reporting, and use. Mapping reviews are mainly driven by questions of effectiveness of a particular intervention and hence they use the Participant Intervention Comparator Outcome Study type format similar to systematic reviews of effectiveness. Scoping reviews mostly use the Participant, context, concept (PCC) format, where they map a concept of interest relevant to a particular population in a specific setting and context. Data extraction is limited by only coding of studies and intervention characteristics in evidence maps. The results of the mapping reviews can be used inform research priorities and research funding, whereas, scoping reviews result may be used to inform policy development by clarifying key concepts and methods, and further research., Conclusion: We recommend authors who are planning to undertake scoping reviews confirm that their research question can be appropriately answered using a scoping review methodology, however, for broader research questions without the need for an in-depth analysis of the information, we recommend authors to consider mapping reviews., (Copyright © 2022 Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
29. Development of green polylactic acid asymmetric ultrafiltration membranes for nutrient removal.
- Author
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Nassar L, Hegab HM, Khalil H, Wadi VS, Naddeo V, Banat F, and Hasan SW
- Subjects
- Membranes, Artificial, Nitrogen, Nutrients, Polyesters, Wastewater, Drinking Water, Ultrafiltration methods
- Abstract
Polylactides are a prominent class of biocompatible and biodegradable polymers that can be used to fabricate membranes for wastewater treatment. Excessive nutrient (phosphorus and nitrogen) concentrations in water bodies are a serious concern that has resulted in widespread health problems and potable water shortages. In this study, ultrafiltration (UF) membranes were prepared from polylactic acid (PLA) using the phase inversion method. Scanning electron microscope (SEM), thermogravimetric analyzer (TGA), and Fourier-transform infrared (FTIR) analysis were used to characterize the membranes. The hydrophilicity of the membrane surface was investigated by analyzing the water contact angle (CA). The results showed that the PLA membranes had a finger-like asymmetric morphology and various dense pore sizes. When the concentration of the PLA polymer increased from 15% to 20%, the removal of ammonium‑nitrogen (NH
4 + -N) increased from 41.9 ± 1.3% to 95.9 ± 3.1% and from 50% to 87% for synthetic and raw wastewater samples, respectively. Up to 52% removal rates of phosphates (PO4 3- -P) were achieved using PLA membranes. This study revealed a great opportunity to develop green, efficient, and sustainable PLA membranes for the treatment of wastewater with high nutrient content., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier B.V. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
30. Long-term Outcomes Following Surgical Management of Rectal Endometriosis: Seven-year Follow-up of Patients Enrolled in a Randomized Trial.
- Author
-
Roman H, Huet E, Bridoux V, Khalil H, Hennetier C, Bubenheim M, Braund S, and Tuech JJ
- Subjects
- Child, Female, Follow-Up Studies, Humans, Postoperative Complications etiology, Pregnancy, Prospective Studies, Quality of Life, Treatment Outcome, Digestive System Surgical Procedures methods, Endometriosis complications, Laparoscopy adverse effects, Rectal Diseases complications
- Abstract
Study Objective: To compare functional outcomes, recurrence rate, and pregnancy likelihood in patients undergoing conservative or radical surgery for deep rectal endometriosis followed up for 7 years., Design: Prospective study in a cohort of patients enrolled in a 2-arm randomized trial from March 2011 to August 2013., Setting: A tertiary referral center., Patients: Fifty-five patients with deep endometriosis infiltrating the rectum., Interventions: Patients underwent either segmental resection or nodule excision via shaving or disk excision, depending on randomization that was performed preoperatively using sequentially numbered, opaque sealed envelopes., Measurements and Main Results: The primary end point was the number of patients experiencing one of the following symptoms: constipation, frequent bowel movements, anal incontinence, or bladder dysfunction 24 months after surgery. The secondary end points were values of gastrointestinal and overall quality of life scores. The 7-year recurrence rates (new deep endometriosis nodules infiltrating the rectum) in the excision vs segmental resection arms were 7.4 % vs 0% (p = .24). One of the symptoms included in the definition of the primary outcomes was recorded in 55.6% vs 60.7% of patients (p = .79). However, 51.9% vs 53.6% of patients considered their bowel movements as normal (p = .99). An intention-to-treat comparison of overall quality of life scores did not find a difference between the 2 groups 7 years after surgery. At the end of the 7-year study period, 31 of 37 patients who tried to conceive were successful (83.8%), including 27 pregnancies (57.4%) resulting from natural conception and 20 pregnancies (42.6%) resulting from assisted reproductive technology procedures. The pregnancy rate was 82.4% vs 85% in the 2 arms (p = .99). A 75.7% live birth rate was recorded. At the end of the follow-up, there were 15 women with 1 child (40.5%) and 13 women with 2 children (35.1%). During the 7-year follow-up, the reoperation rates were 37% and 35.7%, respectively, in each arm (p = .84). Among the 27 reoperation procedures during the follow-up period, 11 (40.7%) were for postoperative complications, 7 (25.9%) were necessary before assisted reproductive technology management, 8 (29.6%) were for recurrent abdominal or pelvic pain, and 1 (3.7%) was for midline ventral hernia after pregnancy., Conclusion: Our study did not reveal a considerable difference in terms of digestive functional outcomes, recurrence rate, reoperation risk, and pregnancy likelihood when conservative and radical rectal surgeries for deep endometriosis were compared 7 years after surgery. The postoperative pregnancy rate observed in our series was high., (Copyright © 2022 AAGL. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
31. Tools to support the automation of systematic reviews: a scoping review.
- Author
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Khalil H, Ameen D, and Zarnegar A
- Subjects
- Automation, Humans, Reproducibility of Results, Systematic Reviews as Topic, Machine Learning, Software
- Abstract
Objective: The objectives of this scoping review are to identify the reliability and validity of the available tools, their limitations and any recommendations to further improve the use of these tools., Study Design: A scoping review methodology was followed to map the literature published on the challenges and solutions of conducting evidence synthesis using the JBI scoping review methodology., Results: A total of 47 publications were included in the review. The current scoping review identified that LitSuggest, Rayyan, Abstractr, BIBOT, R software, RobotAnalyst, DistillerSR, ExaCT and NetMetaXL have potential to be used for the automation of systematic reviews. However, they are not without limitations. The review also identified other studies that employed algorithms that have not yet been developed into user friendly tools. Some of these algorithms showed high validity and reliability but their use is conditional on user knowledge of computer science and algorithms., Conclusion: Abstract screening has reached maturity; data extraction is still an active area. Developing methods to semi-automate different steps of evidence synthesis via machine learning remains an important research direction. Also, it is important to move from the research prototypes currently available to professionally maintained platforms., (Copyright © 2021. Published by Elsevier Inc.)
- Published
- 2022
- Full Text
- View/download PDF
32. Challenges of evidence synthesis during the 2020 COVID pandemic: a scoping review.
- Author
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Khalil H, Tamara L, Rada G, and Akl EA
- Subjects
- Databases, Bibliographic, Evidence-Based Practice, Guidelines as Topic standards, Humans, Information Dissemination, COVID-19, Research Report standards
- Abstract
Aim: The objectives of this scoping review are to identify the challenges to conducting evidence synthesis during the COVID-19 pandemic and to propose some recommendations addressing the identified gaps., Methods: A scoping review methodology was followed to map the literature published on the challenges and solutions of conducting evidence synthesis using the Joanna Briggs Methodology of performing scoping review. We searched several databases from the start of the Pandemic in December 2019 until 10th June 2021., Results: A total of 28 publications was included in the review. The challenges cited in the included studies have been categorised into four distinct but interconnected themes including: upstream, Evidence synthesis, downstream and contextual challenges. These challenges have been further refined into issues with primary studies, databases, team capacity, process, resources, and context. Several proposals to improve the above challenges included: transparency in primary studies registration and reporting, establishment of online platforms that enables collaboration, data sharing and searching, the use of computable evidence and coordination of efforts at an international level., Conclusion: This review has highlighted the importance of including artificial intelligence, a framework for international collaboration and a sustained funding model to address many of the shortcomings and ensure we are ready for similar challenges in the future., (Copyright © 2021 Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
33. Interlobular Septal Thickening in a Young Man With Dyspnea.
- Author
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Gupta S, Parmar M, Cox C, Orabi C, Khalil H, Daouk S, and Brown BR
- Subjects
- Adenocarcinoma pathology, Adrenal Gland Neoplasms secondary, Adult, Biomarkers, Tumor analysis, Carcinoma pathology, Diagnosis, Differential, Dyspnea, Fatal Outcome, Humans, Lung Neoplasms pathology, Lymphangitis pathology, Lymphatic Metastasis, Male, Neoplasm Invasiveness, Tomography, X-Ray Computed, Adenocarcinoma diagnosis, Carcinoma diagnosis, Lung Neoplasms diagnosis, Lymphangitis diagnosis
- Abstract
Case Presentation: A 30-year-old man with a history of childhood asthma, a 15-pack-year smoking history, and methamphetamine abuse was intubated and started on mechanical ventilation because of acute hypoxic respiratory failure after experiencing progressive dyspnea and a nonproductive cough over the previous year. During the previous 3 months, he had multiple clinic visits, with chest radiographs showing diffuse, bilateral, reticulonodular opacities and small bilateral pleural effusions and was treated for community-acquired pneumonia. Testing for COVID pneumonia was negative, and he failed to respond to antimicrobial therapy. Physical examination on admission showed diffuse fine crackles bilaterally on lung auscultation. Admission laboratory test results were unremarkable., (Copyright © 2021. Published by Elsevier Inc.)
- Published
- 2021
- Full Text
- View/download PDF
34. Predictors of severe postoperative pain after orthopedic surgery in the immediate postoperative period.
- Author
-
Khalil H, Shajrawi A, and Henker R
- Subjects
- Analgesics, Opioid therapeutic use, Humans, Pain Management, Postoperative Period, Orthopedic Procedures adverse effects, Pain, Postoperative etiology
- Abstract
Aim: Severe pain in the immediate postoperative period can negatively affect patients' quality of recovery, prolong hospital stay, and increase the risk of developing persistent pain. This study aimed to examine the predictors of severe postoperative pain in the immediate postoperative period among orthopedic trauma patients., Methods: A prospective observational study design was used. Data were collected from 153 patients that underwent orthopedic surgery procedures. Pain scores were assessed by a numeric pain scale at 45 min in the Post Anesthesia Care Unit. Physical health status was measured by the American Society of Anesthesiologists Status Classification System, and total dose of opioids (converted to morphine equivalents) and other demographic and clinical characteristics were recorded from medical records., Results: Preoperative smoking and physical health status were statistically significant predictors of severe postoperative pain in the immediate postoperative period. The odds of severe postoperative pain for smokers were 2.42 times the odds of nonsmokers. Patients with severe systemic disease showed 4.27 times lower odds of severe pain than more healthy patients., Conclusion: Preoperative predictors of severe postoperative pain should be considered when assessing and treating orthopedic patients postoperatively to assure adequate pain relief., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
35. Local Foods Can Increase Adequacy of Nutrients Other than Iron in Young Urban Egyptian Women: Results from Diet Modeling Analyses.
- Author
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Brouzes CMC, Darcel N, Tomé D, Bourdet-Sicard R, Youssef Shaaban S, Gamal El Gendy Y, Khalil H, Ferguson E, and Lluch A
- Subjects
- Adult, Egypt, Female, Food, Fortified, Humans, Micronutrients, Urban Population, Young Adult, Diet, Iron, Nutritional Requirements
- Abstract
Background: Nutrition transition and recent changes in lifestyle in Middle Eastern countries have resulted in the double burden of malnutrition. In Egypt, 88% of urban women are overweight or obese and 50% are iron deficient. Their energy, sugar, and sodium intakes are excessive, while intakes of iron, vitamin D, and folate are insufficient., Objective: This study aimed to formulate dietary advice based on locally consumed and affordable foods and determine the need for fortified products to meet the nutrient requirements of urban Egyptian women., Methods: Food intakes were assessed using a 4-d food diary collected from 130 urban Egyptian women aged 19-30 y. Food prices were collected from modern and traditional markets to calculate diet cost. Population-based linear and goal programming analyses (Optifood tool) were used to identify "limiting nutrients" and to assess whether locally consumed foods (i.e., consumed by >5% of women) could theoretically improve nutrient adequacy at an affordable cost (i.e., less than or equal to the mean diet cost), while meeting recommendations for SFAs, sugars, and sodium. The potential of hypothetical fortified foods for improving intakes of micronutrients was also assessed., Results: Iron was the most limiting nutrient. Daily consumption of fruits, vegetables, milk or yogurt, meat/fish/eggs, and tahini (sesame paste) were likely to improve nutrient adequacy for 11 out of 12 micronutrients modeled. Among fortified foods tested, iron-fortified rice, milk, water, bread, or yogurt increased the minimized iron content of the modeled diet from 40% to >60% of the iron recommendation., Conclusions: A set of dietary advice based on locally consumed foods, if put into practice, can theoretically meet requirements for most nutrients, except for iron for which adequacy is harder to achieve without fortified products. The acceptability of the dietary changes modeled needs evaluation before promoting them to young Egyptian women., (© The Author(s) 2021. Published by Oxford University Press on behalf of the American Society for Nutrition.)
- Published
- 2021
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36. Genetic Liability for Internalizing Versus Externalizing Behavior Manifests in the Developing and Adult Hippocampus: Insight From a Meta-analysis of Transcriptional Profiling Studies in a Selectively Bred Rat Model.
- Author
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Birt IA, Hagenauer MH, Clinton SM, Aydin C, Blandino P Jr, Stead JDH, Hilde KL, Meng F, Thompson RC, Khalil H, Stefanov A, Maras P, Zhou Z, Hebda-Bauer EK, Goldman D, Watson SJ Jr, and Akil H
- Subjects
- Animals, Antigens, Surface, Depression, Exploratory Behavior, Male, Milk Proteins, Rats, Rats, Sprague-Dawley, Anxiety, Hippocampus
- Abstract
Background: For more than 16 years, we have selectively bred rats for either high or low levels of exploratory activity within a novel environment. These bred high-responder (bHR) and bred low-responder (bLR) rats model temperamental extremes, exhibiting large differences in internalizing and externalizing behaviors relevant to mood and substance use disorders., Methods: We characterized persistent differences in gene expression related to bHR/bLR phenotype across development and adulthood in the hippocampus, a region critical for emotional regulation, by meta-analyzing 8 transcriptional profiling datasets (microarray and RNA sequencing) spanning 43 generations of selective breeding (postnatal day 7: n = 22; postnatal day 14: n = 49; postnatal day 21: n = 21; adult: n = 46; all male). We cross-referenced expression differences with exome sequencing within our colony to pinpoint candidates likely to mediate the effect of selective breeding on behavioral phenotype. The results were compared with hippocampal profiling from other bred rat models., Results: Genetic and transcriptional profiling results converged to implicate multiple candidate genes, including two previously associated with metabolism and mood: Trhr and Ucp2. Results also highlighted bHR/bLR functional differences in the hippocampus, including a network essential for neurodevelopmental programming, proliferation, and differentiation, centering on Bmp4 and Mki67. Finally, we observed differential expression related to microglial activation, which is important for synaptic pruning, including 2 genes within implicated chromosomal regions: C1qa and Mfge8., Conclusions: These candidate genes and functional pathways may direct bHR/bLR rats along divergent developmental trajectories and promote a widely different reactivity to the environment., (Copyright © 2020 Society of Biological Psychiatry. All rights reserved.)
- Published
- 2021
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37. Conducting high quality scoping reviews-challenges and solutions.
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Khalil H, Peters MD, Tricco AC, Pollock D, Alexander L, McInerney P, Godfrey CM, and Munn Z
- Subjects
- Humans, Research Design statistics & numerical data, Data Accuracy, Guidelines as Topic, Research Design standards, Systematic Reviews as Topic standards
- Abstract
Objectives: Scoping reviews are being increasingly used by researchers. The objective of this article was to outline some challenges and potential solutions to improve the conduct and reporting of scoping reviews., Study Design and Setting: The JBI scoping review methodology group consists of 9 experts in the field of scoping reviews. This article summarizes the key issues facing reviewers who conduct scoping reviews and those who use the results from scoping reviews and may engage in consultations during their development., Results: Several key issues have been identified for reviewers as challenges in conducting scoping reviews. Challenges may be faced throughout the conduct of the review, from developing the a priori protocol to finalizing the review report for publication and developing implications or recommendations for research, policy, and practice from the results of the review. Challenges to publishing scoping reviews may stem from a lack of understanding of scoping reviews by journal editors, authors, and peer reviewers to extending the conclusion drawn from these reviews to generate recommendations for practice and policy., Conclusion: By identifying and overcoming challenges to the conduct and reporting of scoping reviews, reviewers may better ensure that scoping reviews are effective in meeting the objectives of scoping reviews., (Crown Copyright © 2020. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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38. Influence of level of inclusion of Azolla leaf meal on growth performance, meat quality and skeletal muscle p70S6 kinase α abundance in broiler chickens.
- Author
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Abdelatty AM, Mandouh MI, Al-Mokaddem AK, Mansour HA, Khalil HMA, Elolimy AA, Ford H, Farid OAA, Prince A, Sakr OG, Aljuaydi SH, and Bionaz M
- Subjects
- Animal Nutritional Physiological Phenomena, Animals, Diet veterinary, Dietary Supplements, Male, Meat analysis, Muscle, Skeletal, Random Allocation, Animal Feed analysis, Chickens
- Abstract
The interest in biodiesel production from oil-bearing seeds rather than soybean necessitates the scientific validation of other good quality protein sources that could substitute soybean meal in animal diets, particularly, broiler chickens where soybean meal constitutes a large portion of their diet. Therefore, the present study was conducted to investigate the effect of sun-dried Azolla leaf meal (ALM) as an unconventional dietary protein source in broiler chicken diet on growth performance, meat quality, skeletal muscle cell growth and protein synthesis through regulation of ribosomal protein S6 kinase (p70S6 kinase α). A total of 120 male Ross 308 broiler chicks were randomly allocated to three dietary treatments. Each treatment had four cages (i.e. replicates) with 10 birds/cage. The control group was fed with a corn-soy-based diet, the AZ5 group was supplemented with 5% ALM and the AZ10 group was supplemented with 10% ALM for 37 days. A 5-day trial was also conducted to measure the apparent nutrient digestibility. Growth performance parameters were measured weekly. At the end of the experiment, 12 birds from each group (3/cage) were euthanized and used for samplings. Inclusion of ALM tended to improve BW gain (P = 0.06) and increased feed intake (P < 0.01). Additionally, ALM decreased the percentage of breast meat cooking loss linearly (P < 0.01). In addition, ALM at a dose of 5% increased the production of propionate in the cecum (P = 0.01). Activation of breast muscle p70S6 kinase was higher when ALM was included in a dose-dependent manner (P < 0.01). The inclusion of ALM increased breast meat redness (P < 0.01); however, the lightness was within the normal range in all groups. Findings from our study suggest that ALM could be included in a broiler chicken diet up to 5% without any major negative effect on meat quality or performance, and it regulates muscle protein synthesis through activation of mammalian target of rapamycin/6S kinase signaling.
- Published
- 2020
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39. Evaluation of the thermomechanical properties and biodegradation of brown rice starch-based chitosan biodegradable composite films.
- Author
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Hasan M, Gopakumar DA, Olaiya NG, Zarlaida F, Alfian A, Aprinasari C, Alfatah T, Rizal S, and Khalil HPSA
- Subjects
- Spectroscopy, Fourier Transform Infrared, Temperature, Biodegradation, Environmental, Chemical Phenomena, Chitosan chemistry, Mechanical Phenomena, Oryza chemistry, Starch chemistry
- Abstract
Biodegradable films composed of starch and chitosan plasticized by palm oil were fabricated via a solvent casting technique. In this study, the influence of the ratio of brown rice starch and chitosan on the mechanical, thermal, antimicrobial, and morphological properties of the films was investigated. Antimicrobial films with a smooth surface and a compact structure of brown rice starch were obtained. The results showed that a higher proportion of chitosan in the polymer blends resulted in a substantial enhancement in the tensile strength (TS) and thermal stability of the film. The TS values for BRS100, BRS30CH70, BRS50CH50, BRS70CH30, and CH100 were 3.7, 15.2, 10.2, 9.3, and 8.8 MPa, respectively, and the elongation at break (EB) values of the BRS100, BRS30CH70, BRS50CH50, BRS70CH30, and CH100 samples were 39.5%, 34.7%, 7.3%, 11.5%, and 6.9%, respectively. The addition of chitosan to the brown rice starch samples resulted in a reduced water uptake of the film. The film with a balanced ratio of brown rice starch and chitosan exhibited excellent water resistance, with its water absorption being the lowest among all of the studied compositions., Competing Interests: Declaration of competing interest The authors declare no conflicts of interest., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2020
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40. Occult Vaginal Evisceration: A Case Report.
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Shehata F, Bougie O, Baker K, and Khalil H
- Subjects
- Aged, Female, Humans, Intestinal Neoplasms complications, Pelvic Organ Prolapse diagnosis, Pelvic Organ Prolapse etiology, Pelvic Organ Prolapse surgery, Vagina surgery
- Abstract
Background: Vaginal evisceration is a rare gynaecologic emergency that necessitates surgical intervention. It may manifest with obvious vaginal rupture, or it may be occult, specifically in patients with chronic pelvic organ prolapse., Case: A 66-year-old woman with a history of bowel cancer and irradiation presented with occult vaginal evisceration. This was discovered during a routine follow-up appointment. It was repaired in two layers with xenograft derived from porcine intestinal mucosa (Surgisis, Cook Medical, Bloomington, IN) interposition and a concomitant colpocleisis. Long-term complications of the procedure included recurrent prolapse, but her vaginal vault evisceration did not recur., Conclusion: In patients with chronic pelvic organ prolapse, especially in those with additional risk factors for poor tissue strength, the possibility of vaginal vault evisceration or dehiscence should be considered. These patients would benefit from close follow-up., (Copyright © 2019 The Society of Obstetricians and Gynaecologists of Canada/La Société des obstétriciens et gynécologues du Canada. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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41. Continued Ultrasound Surveillance Required after Hand Ischemia Associated with Trauma in Children.
- Author
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Kirkwood ML, Chamseddin KH, Hanson B, Timaran CH, Ali M, Jacob AD, and Rectenwald JE
- Subjects
- Adolescent, Age Factors, Aneurysm diagnostic imaging, Aneurysm etiology, Brachial Artery injuries, Brachial Artery physiopathology, Brachial Artery surgery, Child, Child, Preschool, Female, Hand Injuries physiopathology, Hand Injuries surgery, Humans, Ischemia physiopathology, Ischemia surgery, Male, Predictive Value of Tests, Retrospective Studies, Risk Factors, Saphenous Vein transplantation, Time Factors, Treatment Outcome, Vascular Grafting adverse effects, Vascular Grafting methods, Vascular Patency, Vascular System Injuries physiopathology, Vascular System Injuries surgery, Brachial Artery diagnostic imaging, Hand Injuries diagnostic imaging, Ischemia diagnostic imaging, Ultrasonography, Doppler, Duplex, Vascular System Injuries diagnostic imaging
- Abstract
Background: Hand ischemia following trauma in children is rare, and the natural history after upper extremity arterial bypass in children is unknown. We hypothesize children with brachial artery repair are at long-term risk of developing aneurysmal degeneration or thrombosis, thus necessitating annual duplex ultrasonography and physical examination., Methods: A retrospective review of children who had brachial artery repair (bypass or vein patch) for hand ischemia secondary to trauma at a level I trauma pediatric hospital was performed. Telephone interviews were conducted to assess the presence of arm/hand symptoms (pain, weakness, fatigue, sensory function, limb length discrepancy)., Results: Between 2003 and 2016, 16 children (12 males), mean age 8 years (3-13 years) underwent brachial artery repair (12 bypass with vein, 4 vein patch). Mechanism of injury included 11 supracondylar fractures and 5 lacerations. All patients were seen at 2 weeks with a duplex ultrasound. Thirteen patients were lost to follow-up. The 3 patients with follow-up had patent bypasses, but one patient 6 years out from the repair had aneurysmal degeneration of the vein graft. Seven patients were never seen again. Phone interviews were conducted for the remaining 6 patients and 2 complained of arm fatigue and intermittent hand pain. Only one patient reported that the pediatrician checked pulses in the affected extremity., Conclusions: Eighty percentage of children had no further follow-up after the postoperative visit. Asymptomatic aneurysmal degeneration of the vein graft was noted 6 years following repair in one patient, and 2 patients had unevaluated hand complaints. These patients are at risk for late complications and are unlikely to return for routine follow-up. The importance of graft surveillance must be more clearly emphasized at time of initial surgery., (Copyright © 2018 Elsevier Inc. All rights reserved.)
- Published
- 2018
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42. Chest Wall Mechanics In Vivo With a New Custom-Made Three-Dimensional-Printed Sternal Prosthesis.
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Oswald N, Senanayake E, Naidu B, Khalil H, and Bishay E
- Subjects
- Humans, Male, Middle Aged, Polyethylene, Prosthesis Design, Sternotomy, Surgical Flaps, Titanium, Printing, Three-Dimensional, Prosthesis Implantation, Plastic Surgery Procedures instrumentation, Respiratory Mechanics physiology, Sternum surgery, Thoracic Wall physiopathology
- Abstract
Purpose: Reconstruction after sternal resection is performed according to surgeon intuition; physiologic evidence for selection of prostheses is lacking. We present our experience of the in vivo function of a novel device for sternal reconstruction., Description: A three-dimensional-printed titanium and porous polyethylene sternal prosthesis was made according to the patient's computed tomographic scan. The titanium arms slot over adjacent ribs and are fixed in place with screws. The porous element allows ingrowth of native tissue while preventing lung herniation around the narrow titanium bars., Evaluation: We performed optoelectronic plethysmography to assess the physiologic function of the device compared with a muscle flap reconstruction. Asynchronous and paradoxical movements of the thoracoabdominal surface were apparent with the muscle flap reconstruction but not with the new device. Considerably higher tidal volumes and a lower respiratory rate achieved the same minute volume with the new device compared with the muscle flap., Conclusions: Rigid sternal reconstruction with a three-dimensional-printed prosthesis demonstrated superior respiratory mechanics compared with reconstruction with an autologous muscle flap., (Copyright © 2018 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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43. Breast implant associated anaplastic large cell lymphoma: The UK experience. Recommendations on its management and implications for informed consent.
- Author
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Johnson L, O'Donoghue JM, McLean N, Turton P, Khan AA, Turner SD, Lennard A, Collis N, Butterworth M, Gui G, Bristol J, Hurren J, Smith S, Grover K, Spyrou G, Krupa K, Azmy IA, Young IE, Staiano JJ, Khalil H, and MacNeill FA
- Subjects
- Adult, Aged, Breast Neoplasms epidemiology, Breast Neoplasms pathology, Combined Modality Therapy, Device Removal, Female, Humans, Lymphoma, Large-Cell, Anaplastic epidemiology, Lymphoma, Large-Cell, Anaplastic pathology, Middle Aged, Neoplasm Staging, Treatment Outcome, United Kingdom epidemiology, Breast Implants adverse effects, Breast Neoplasms etiology, Breast Neoplasms therapy, Informed Consent, Lymphoma, Large-Cell, Anaplastic etiology, Lymphoma, Large-Cell, Anaplastic therapy
- Abstract
Background: Breast implant-associated anaplastic large-cell lymphoma (BIA-ALCL) is a rare, Non-Hodgkin lymphoma arising in the capsule of breast implants. BIA-ALCL presents as a recurrent effusion and/or mass. Tumours exhibit CD30 expression and are negative for Anaplastic Lymphoma Kinase (ALK). We report the multi-disciplinary management of the UK series and how the stage of disease may be used to stratify treatment., Methods: Between 2012 and 2016, 23 cases of BIA-ALCL were diagnosed in 15 regional centres throughout the UK. Data on breast implant surgeries, clinical features, treatment and follow-up were available for 18 patients., Results: The mean lead-time from initial implant insertion to diagnosis was 10 years (range: 3-16). All cases were observed in patients with textured breast implants or expanders. Fifteen patients with breast implants presented with stage I disease (capsule confined), and were treated with implant removal and capsulectomy. One patient received adjuvant chest-wall radiotherapy. Three patients presented with extra-capsular masses (stage IIA). In addition to explantation, capsulectomy and excision of the mass, all patients received neo-/adjuvant chemotherapy with CHOP as first line. One patient progressed on CHOP but achieved pathological complete response (pCR) with Brentuximab Vedotin. After a mean follow-up of 23 months (range: 1-56) all patients reported here remain disease-free., Discussion: BIA-ALCL is a rare neoplasm with a good prognosis. Our data support the recommendation that stage I disease be managed with surgery alone. Adjuvant chemotherapy may be required for more invasive disease and our experience has shown the efficacy of Brentuximab as a second line treatment., (Copyright © 2017 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.)
- Published
- 2017
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44. Total HDL cholesterol efflux capacity in healthy children - Associations with adiposity and dietary intakes of mother and child.
- Author
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Khalil H, Murrin C, O'Reilly M, Viljoen K, Segurado R, O'Brien J, Somerville R, McGillicuddy F, and Kelleher CC
- Subjects
- Age Factors, Biomarkers blood, Body Mass Index, Cell Line, Child, Child, Preschool, Diet Records, Female, Humans, Infant, Newborn, Longitudinal Studies, Male, Maternal Exposure adverse effects, Nutrition Assessment, Pregnancy, Regression Analysis, Surveys and Questionnaires, Time Factors, Adiposity, Child Nutritional Physiological Phenomena, Cholesterol, HDL blood, Diet adverse effects, Macrophages metabolism, Maternal Nutritional Physiological Phenomena, Nutritional Status, Prenatal Exposure Delayed Effects
- Abstract
Background and Aims: High-density lipoprotein (HDL) cholesterol efflux capacity in adults may be a measure of the atheroprotective property of HDL. Little however, is known about HDL cholesterol efflux capacity in childhood. We aimed to investigate the relationship between HDL cholesterol efflux capacity and childhood anthropometrics in a longitudinal study., Methods and Results: Seventy-five children (mean age = 9.4 ± 0.4 years) were followed from birth until the age of 9 years. HDL cholesterol efflux capacity was determined at age 9 by incubating serum-derived HDL-supernatants with
3 H-cholesterol labeled J774 macrophages and percentage efflux determined. Mothers provided dietary information by completing food frequency questionnaires in early pregnancy and then 5 years later on behalf of themselves and their children. Pearson's correlations and multiple regression analyses were conducted to confirm independent associations with HDL efflux. There was a negative correlation between HDL cholesterol efflux capacity and waist circumference at age 5 (r = -0.3, p = 0.01) and age 9 (r = -0.24, p = 0.04) and BMI at age 5 (r = -0.45, p = 0.01) and age 9 (r = -0.19, p = 0.1). Multiple regression analysis showed that BMI at age 5 remained significantly associated with reduced HDL cholesterol efflux capacity (r = -0.45, p < 0.001). HDL-C was negatively correlated with energy-adjusted fat intake (r = -0.24, p = 0.04) and positively correlated with energy-adjusted protein (r = 0.24, p = 0.04) and starch (r = 0.29, p = 0.01) intakes during pregnancy. HDL-C was not significantly correlated with children dietary intake at age 5. There were no significant correlations between maternal or children dietary intake and HDL cholesterol efflux capacity., Conclusions: This novel analysis shows that efflux capacity is negatively associated with adiposity in early childhood independent of HDL-C., (Copyright © 2016 The Italian Society of Diabetology, the Italian Society for the Study of Atherosclerosis, the Italian Society of Human Nutrition, and the Department of Clinical Medicine and Surgery, Federico II University. Published by Elsevier B.V. All rights reserved.)- Published
- 2017
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45. Lemierre's Syndrome Associated Mycotic Aneurysm of the External Carotid Artery with Primary Internal Carotid Artery Occlusion in a Previously Healthy 18-Year-Old Female.
- Author
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Chamseddin KH and Kirkwood ML
- Subjects
- Adolescent, Aneurysm, Infected diagnostic imaging, Aneurysm, Infected therapy, Anti-Bacterial Agents therapeutic use, Carotid Artery Diseases diagnostic imaging, Carotid Artery Diseases therapy, Carotid Artery, External diagnostic imaging, Carotid Artery, External surgery, Carotid Artery, Internal diagnostic imaging, Carotid Stenosis diagnostic imaging, Carotid Stenosis therapy, Computed Tomography Angiography, Female, Humans, Lemierre Syndrome complications, Lemierre Syndrome diagnosis, Lemierre Syndrome therapy, Ligation, Shock, Septic microbiology, Treatment Outcome, Vascular Surgical Procedures, Aneurysm, Infected microbiology, Carotid Artery Diseases microbiology, Carotid Artery, External microbiology, Carotid Artery, Internal microbiology, Carotid Stenosis microbiology, Fusobacterium necrophorum isolation & purification, Lemierre Syndrome microbiology
- Abstract
Lemierre's syndrome is a rare life-threatening condition characterized by internal jugular vein thrombosis and is typically associated with a gram-negative infection with septic metastasis secondary to a retropharyngeal abscess that involves the vasculature of the head and neck. We report a case of Lemierre's syndrome in an 18-year-old female adolescent who developed an internal carotid artery occlusion and ipsilateral external carotid artery (ECA) mycotic aneurysm complicated by fulminant pseudomonal sepsis. The patient was managed with open ligation of the ECA with essentially complete recovery., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2016
- Full Text
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46. Simultaneous dual syringe electrospinning system using benign solvent to fabricate nanofibrous P(3HB-co-4HB)/collagen peptides construct as potential leave-on wound dressing.
- Author
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Vigneswari S, Murugaiyah V, Kaur G, Abdul Khalil HPS, and Amirul AA
- Subjects
- Animals, Bandages, Biocompatible Materials pharmacology, Cell Line, Cell Proliferation drug effects, Male, Mice, Microscopy, Electron, Scanning, Rats, Rats, Sprague-Dawley, Skin pathology, Spectroscopy, Fourier Transform Infrared, Wettability, Wound Healing drug effects, Biocompatible Materials chemistry, Collagen chemistry, Hydroxybutyrates chemistry, Nanofibers chemistry, Polyesters chemistry
- Abstract
The main focus of this study is the incorporation of collagen peptides to fabricate P(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] nano-fiber construct to further enhance surface wettability and support cell growth while harbouring desired properties for biodegradable wound dressing. Simultaneous electrospinning of nanofiber P(3HB-co-4HB)/collagen peptides construct was carried out using dual syringe system. The wettability of the constructs increased with the increase in 4HB molar fraction from 20mol% 4HB [53.2°], P(3HB-co-35mol%4HB)[48.9°], P(3HB-co-50mol%4HB)[44.5°] and P(3HB-co-82mol%4HB) [37.7°]. In vitro study carried out using mouse fibroblast cells (L929) grown on nanofiber P(3HB-co-4HB)/collagen peptides construct showed an increase in cell proliferation. In vivo study using animal model (Sprague Dawley rats) showed that nanofibrous P(3HB-co-4HB)/collagen peptides construct had a significant effect on wound contractions with the highest percentage of wound closure of 79%. Hence, P(3HB-co-4HB)/collagen peptides construct suitable for wound dressing have been developed using nano-fabrication technique., (Copyright © 2016 Elsevier B.V. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
47. Complete Mesh Infection Following Repeat Retropubic Tension-Free Vaginal Tape.
- Author
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Didomizio L, Khalil H, and Pascali D
- Abstract
Background: Midurethral slings are the most widely used surgical treatment for stress urinary incontinence. Complications include bladder injury, voiding dysfunction, mesh exposure/erosion, dyspareunia, and failure to correct the incontinence. Complete mesh infection is rare., Case: A 48-year-old woman underwent a repeat retropubic tension-free vaginal tape (TVT) procedure for stress urinary incontinence. She presented eight weeks postoperatively with a tender suprapubic mass and urinary retention. A CT scan demonstrated thickening of the bladder wall and cystoscopy revealed severe inflammation with no intramural injury. The sling appeared to be infected and was removed vaginally. The patient's symptoms resolved following removal of the sling., Conclusion: Mesh infection following a midurethral sling procedure is rare. In suspected cases, cystoscopy should be performed to rule out bladder injury. Antibiotic therapy may be successful, but removal of the sling may be required for resolution of symptoms., (Copyright © 2016 The Society of Obstetricians and Gynaecologists of Canada/La Société des obstétriciens et gynécologues du Canada. Published by Elsevier Inc. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
48. Anterior Tibial Artery Pseudoaneurysm following Ankle Arthroscopy in a Hemophiliac Patient.
- Author
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Chamseddin KH and Kirkwood ML
- Subjects
- Adult, Aneurysm, False diagnostic imaging, Aneurysm, False physiopathology, Aneurysm, False surgery, Hemophilia A diagnosis, Humans, Ligation, Male, Risk Factors, Thrombectomy, Tibial Arteries diagnostic imaging, Tibial Arteries physiopathology, Tibial Arteries surgery, Treatment Outcome, Ultrasonography, Doppler, Color, Vascular System Injuries diagnostic imaging, Vascular System Injuries physiopathology, Vascular System Injuries surgery, Aneurysm, False etiology, Ankle Joint surgery, Arthroscopy adverse effects, Hemophilia A complications, Tibial Arteries injuries, Vascular System Injuries etiology
- Abstract
Arthroscopy of the foot and ankle is a common orthopedic procedure with low complication rates. Arterial injuries from these procedures are an even more rare subset of the complications. Hemophilia A is a genetic disorder of aberrant coagulation, which leads to increased risk of bleeding even after minor trauma. We present the second case of anterior tibial artery pseudoaneurysm formation secondary to ankle arthroscopy in a hemophiliac patient and suggest that these individuals are at higher risk for developing complications associated with arterial injury. Furthermore, potential risk factors include port placement, anatomic variation of the vessels, and nature of the arthroscopic procedure. We recommend steps to prevent complications in hemophiliac patients., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
49. Exploring the effect of cellulose nanowhiskers isolated from oil palm biomass on polylactic acid properties.
- Author
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Haafiz MK, Hassan A, Khalil HP, Fazita MR, Islam MS, Inuwa IM, Marliana MM, and Hussin MH
- Subjects
- Calorimetry, Differential Scanning, Mechanical Phenomena, Nanocomposites ultrastructure, Polyesters, Thermogravimetry, Arecaceae chemistry, Biomass, Cellulose chemistry, Lactic Acid chemistry, Nanocomposites chemistry, Polymers chemistry
- Abstract
In this work, polylactic acid (PLA) reinforced cellulose nanowhiskers (CNW) were prepared through solution casting technique. The CNW was first isolated from oil palm empty fruit bunch microcrystalline cellulose (OPEFB-MCC) by using 64% H2SO4 and was designated as CNW-S. The optical microscopy revealed that the large particle of OPEFB-MCC has been broken down by the hydrolysis treatment. The atomic force microscopy confirmed that the CNW-S obtained is in nanoscale dimension and appeared in individual rod-like character. The produced CNW-S was then incorporated with PLA at 1, 3, and 5 parts per hundred (phr) resins for the PLA-CNW-S nanocomposite production. The synthesized nanocomposites were then characterized by a mean of tensile properties and thermal stability. Interestingly to note that incorporating of 3 phr/CNW-S in PLA improved the tensile strength by 61%. Also, CNW-S loading showed a positive impact on the Young's modulus of PLA. The elongation at break (Eb) of nanocomposites, however, decreased with the addition of CNW-S. Field emission scanning electron microscopy and transmission electron microscopy revealed that the CNW-S dispersed well in PLA at lower filler loading before it started to agglomerate at higher CNW-S loading (5phr). The DSC analysis of the nanocomposites obtained showed that Tg,Tcc and Tm values of PLA were improved with CNW-S loading. The TGA analysis however, revealed that incopreated CNW-S in PLA effect the thermal stability (T10,T50 and Tmax) of nanocomposite, where it decrease linearly with CNW-S loading., (Copyright © 2016 Elsevier B.V. All rights reserved.)
- Published
- 2016
- Full Text
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50. Relationship of circulatory BDNF with cognitive deficits in people with Parkinson's disease.
- Author
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Khalil H, Alomari MA, Khabour OF, Al-Hieshan A, and Bajwa JA
- Subjects
- Adult, Aged, Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Neuropsychological Tests, Retrospective Studies, Brain-Derived Neurotrophic Factor blood, Cognition Disorders blood, Cognition Disorders etiology, Parkinson Disease complications
- Abstract
Background: Brain-derived neurotrophic factor (BDNF) and cognitive function are diminished in people with Parkinson's disease (PD). The relationship of cognitive function and serum level of BDNF, however is yet to be examined. The aim of this study was to examine serum BDNF levels in PD. Subsequently, the relationship of cognitive function to the serum levels of BDNF was evaluated., Methods: Serum BDNF levels were measured in 29 idiopathic PD subjects and 30 healthy-matched controls using ELISA technique. Cognitive function was assessed using the Montreal Cognitive Assessment (MOCA) scale., Results: Serum BDNF levels and MOCA total score were significantly lower (P<0.001) in PD patients versus healthy controls. MOCA total score correlated with serum BDNF (r=0.44; P=0.012) but not with age, years of education, duration of disease and severity of symptoms. The regression analysis showed that serum BDNF accounted (P=0.019) for 19% of MOCA total score variance., Conclusions: The data confirm lowered serum BDNF in PD. Additionally; it suggests that BDNF may play a role in the cognitive deficit of PD. Further studies are required to identify association of BDNF in cognitive decline with PD., (Copyright © 2016 Elsevier B.V. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
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