1
|
Hussin A, Nathan S, Shahidan MA, Nor Rahim MY, Zainun MY, Khairuddin NAN, Ibrahim N. Identification and mechanism determination of the efflux pump subunit amrB gene mutations linked to gentamicin susceptibility in clinical Burkholderia pseudomallei from Malaysian Borneo. Mol Genet Genomics 2024; 299:12. [PMID: 38381232 DOI: 10.1007/s00438-024-02105-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/29/2023] [Indexed: 02/22/2024]
Abstract
The bacterium Burkholderia pseudomallei is typically resistant to gentamicin but rare susceptible strains have been isolated in certain regions, such as Thailand and Sarawak, Malaysia. Recently, several amino acid substitutions have been reported in the amrB gene (a subunit of the amrAB-oprA efflux pump gene) that confer gentamicin susceptibility. However, information regarding the mechanism of the substitutions conferring the susceptibility is lacking. To understand the mechanism of amino acid substitution that confers susceptibility, this study identifies the corresponding mutations in clinical gentamicin-susceptible B. pseudomallei isolates from the Malaysian Borneo (n = 46; Sarawak: 5; Sabah: 41). Three phenotypically confirmed gentamicin-susceptible (GENs) strains from Sarawak, Malaysia, were screened for mutations in the amrB gene using gene sequences of gentamicin-resistant (GENr) strains (QEH 56, QEH 57, QEH20, and QEH26) and publicly available sequences (AF072887.1 and BX571965.1) as the comparator. The effect of missense mutations on the stability of the AmrB protein was determined by calculating the average energy change value (ΔΔG). Mutagenesis analysis identified a polymorphism-associated mutation, g.1056 T > G, a possible susceptible-associated in-frame deletion, Delta V412, and a previously confirmed susceptible-associated amino acid substitution, T368R, in each of the three GENs isolates. The contribution of Delta V412 needs further confirmation by experimental mutagenesis analysis. The mechanism by which T368R confers susceptibility, as elucidated by in silico mutagenesis analysis using AmrB-modeled protein structures, is proposed to be due to the location of T368R in a highly conserved region, rather than destabilization of the AmrB protein structure.
Collapse
Affiliation(s)
- Ainulkhir Hussin
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
- Department of Pathology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Sheila Nathan
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Muhammad Ashraf Shahidan
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Mohd Yusof Nor Rahim
- Department of Pathology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Mohamad Yusof Zainun
- Department of Pathology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | | | - Nazlina Ibrahim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.
| |
Collapse
|
2
|
Hussin A, Nor Rahim MY, Dalusim F, Shahidan MA, Nathan S, Ibrahim N. Improving the clinical recognition, prognosis, and treatment of melioidosis through epidemiology and clinical findings: The Sabah perspective. PLoS Negl Trop Dis 2023; 17:e0011696. [PMID: 37844130 PMCID: PMC10602235 DOI: 10.1371/journal.pntd.0011696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 10/26/2023] [Accepted: 10/03/2023] [Indexed: 10/18/2023] Open
Abstract
INTRODUCTION Melioidosis is a deadly endemic disease in northern Australia and Southeast Asia, including Sabah, Malaysia, which is caused by the bacterium Burkholderia pseudomallei. It contributes to high fatality rates, mainly due to misdiagnosis leading to the wrong treatment being administered to the patients. Local epidemiology and data on clinical features could assist clinicians during diagnosis and treatment. However, these details are still scarce, particularly in Sabah. METHODS A retrospective study of 246 culture-confirmed melioidosis cases in Queen Elizabeth Hospital, Sabah, Malaysia was performed between 2016 and 2018. The epidemiological data and clinical and laboratory findings were extracted and analysed. RESULTS The annual incidence of culture-confirmed melioidosis cases was estimated to be 4.97 per 100,000 people. The mean age of the patients was 50±15 years. Males and members of the Kadazan-Dusun ethnic group accounted for the majority of the melioidosis cases. The odds ratio analysis indicated that bacteraemic melioidosis in this region was significantly associated with fever (76%), and patients having at least one underlying illness (43%), including diabetes mellitus (32%). Sixty-eight patients (28%) succumbed to melioidosis. Contrary to what is known regarding factors that promote bacteraemic melioidosis, neither patients with fever nor patients with at least one comorbid disease, including diabetes mellitus, were significantly associated with death from melioidosis. There was no statistically significant difference between patients without comorbidities (24, 27%) and those with at least one comorbid disease (26, 25%), including diabetes mellitus (18, 23%). The odds ratios indicate that melioidosis mortality in this region is related to patients showing respiratory organ-associated symptoms (29%), bacteraemia (30%), and septic shock (47%). Burkholderia pseudomallei isolates in this study were highly susceptible to ceftazidime (100%), imipenem (100%), and trimethoprim-sulfamethoxazole (98%). CONCLUSIONS Information obtained from this study can be used by clinicians to recognise individuals with the highest risk of acquiring melioidosis, estimate an accurate prognosis, and provide effective treatment for melioidosis patients to reduce death from melioidosis.
Collapse
Affiliation(s)
- Ainulkhir Hussin
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
- Department of Pathology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Mohd Yusof Nor Rahim
- Department of Pathology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Frederick Dalusim
- Department of Pathology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Muhammad Ashraf Shahidan
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Sheila Nathan
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Nazlina Ibrahim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| |
Collapse
|
3
|
Kebebe E, Ibrahim N, White R, Wittenberg K, Aukema H, McAllister T, Riediger N, Legesse G, McGeough E, Ominski K. Nutritional impact of excluding red meat from the Canadian diet. Meat Sci 2023; 201:109161. [PMID: 37031667 DOI: 10.1016/j.meatsci.2023.109161] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023]
Abstract
The objective of the study was to examine differences in nutrient intake between consumers and non-consumers of red meat and to assess nutritional adequacy of consumers relative to Recommended Daily Allowance (RDA) in Canada. Matching estimators were used to identify differences in nutrient intake between the two groups. Statistically significant differences were observed in nutrient intake between red meat consumers and non-consumers, including lower daily intake of protein, riboflavin, niacin, vitamin D, and zinc and a higher daily intake of dietary fiber, folate, and magnesium among Canadians who did not consume red meat. Further, red meat consumers and non-consumers had nutrient intakes below RDA for dietary energy, fiber, and calcium. While individuals who did not consume red meat were at increased risk of calcium, vitamin D, energy, and potassium inadequacy, those who consumed red meat were at increased risk of dietary fiber, vitamin A, and magnesium inadequacy.
Collapse
|
4
|
Mohamad Dzol MAA, Balasundram V, Shameli K, Ibrahim N, Manan ZA, Isha R. Catalytic pyrolysis of high-density polyethylene over nickel-waste chicken eggshell/HZSM-5. J Environ Manage 2022; 324:116392. [PMID: 36208512 DOI: 10.1016/j.jenvman.2022.116392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 09/12/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
The main objective of the current work is to investigate the effect of nickel-waste chicken eggshell modified Hydrogen exchanged Zeolite Socony Mobil-5 (Ni-WCE/HZSM-5) on pyrolysis of high-density polyethylene (HDPE). Ni-WCE/HZSM-5 was synthesized via the impregnation incipient wetness (IWI) method with Ni and WCE mass loading of 4 and 12 wt% respectively. HZSM-5, CaO, WCE, WCE/HZSM-5, and Ni/HZSM-5 were prepared for comparison purposes with Ni-WCE/HZSM-5. All the synthesized catalysts were characterized for phase analysis, metal loading, surface morphology, and textural properties. The impregnation of nickel and WCE had significantly affected the original framework of HZSM-5, where the crystallinity percentage and average crystal size of HZSM-5 dropped to 44.97% and increased to 47.90 nm respectively. The surface morphology of HZSM-5 has drastically changed from a cubic-like shape into a spider web-like surface after the impregnation of WCE. The BET surface area of HZSM-5 has been lowered due to the impregnation of nickel and WCE, but the total pore volume has increased greatly from 0.2291 cm3/g to 0.2621 cm3/g. The catalyst performance was investigated in the pyrolysis of HDPE via a fixed bed reactor and the pyrolysis oil was further analysed to evaluate the distribution of C6 to C9> hydrocarbons. Among the tested catalytic samples, the highest pyrolysis oil yield was achieved by WCE (80%) followed by CaO (78%), WCE/HZSM-5 (63%), HZSM-5 (61%), Ni/HZSM-5 (44%) and Ni-WCE/HZSM-5 (50%). For hydrocarbon distribution in pyrolysis oil, the Ni/HZSM-5 produced the highest of total C6 and C7 hydrocarbons at 12% and 27% respectively followed by WCE/HZSM-5 (4% and 20%), non-catalytic (5% and 13%), Ni-WCE/HZSM-5 (0% and 15%), WCE (0% and 10%), HZSM-5 (0% and 6%) and CaO (0% and 0%).
Collapse
Affiliation(s)
- M A A Mohamad Dzol
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - V Balasundram
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
| | - K Shameli
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - N Ibrahim
- Energy Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Z A Manan
- Process Systems Engineering Centre (PROSPECTS), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - R Isha
- College of Engineering, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia
| |
Collapse
|
5
|
Song C, Kasim S, Malek S, Ibrahim K, Sulaiman N, Negishi K, Hamidi M, Aziz M, Ibrahim N. Effects of air pollution towards hospital admission prediction of Asian patients with acute coronary syndrome (ACS) using LSTM method. Int J Cardiol 2022. [DOI: 10.1016/j.ijcard.2022.10.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
6
|
Luke J, Long G, Robert C, Carlino M, Choueiri T, Haas N, O'Brien M, Paz-Ares L, Peters S, Powles T, Leiby M, Lin J, Zhao Y, Krepler C, Perini R, Pietanza M, Samkari A, Gruber T, Ibrahim N, Eggermont A. 76P Safety profile of adjuvant pembrolizumab (pembro) in melanoma, non-small cell lung cancer (NSCLC), and renal cell carcinoma (RCC): Pooled analysis of phase III clinical trials. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
7
|
Ibrahim N, Kasim S, Malek S, Nasir NM, Ibrahim K, Aziz M, Song C. Preliminary analysis of the development of an artificial intelligence-based cardiovascular disease risk prediction model in an Asian population. Int J Cardiol 2022. [DOI: 10.1016/j.ijcard.2022.10.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
8
|
Azmi NHM, Suppiah S, Ibrahim NSN, Ibrahim B, Seriramulu VP, Piersson AD, Mohamad M, Karuppiah T, Omar NF, Ibrahim N, Razali RM, Harrun NH, Sallehuddin H, Nasser NS, Saripan MI. Brain morphometry and Seed-based analysis of resting-state functional connectivity in default mode network of Alzheimer's disease patients compared with healthy control subjects in the Klang Valley, Malaysia. J Med Imaging Radiat Sci 2022. [DOI: 10.1016/j.jmir.2022.10.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
|
9
|
Ibrahim N, Kasim S, Malek S, Ibrahim K, Nasir NM, Aziz M, Song C. Validation of the updated SCORE2, revised PCEs and WHO CVD risk charts in an Asian population. Int J Cardiol 2022. [DOI: 10.1016/j.ijcard.2022.10.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
10
|
Izzudin NM, Jalil AA, Ali MW, Aziz FFA, Azami MS, Hassan NS, Fauzi AA, Ibrahim N, Saravanan R, Hassim MH. Promoting a well-dispersion of MoO 3 nanoparticles on fibrous silica catalyst via one-pot synthesis for enhanced photoredox environmental pollutants efficiency. Chemosphere 2022; 308:136456. [PMID: 36150498 DOI: 10.1016/j.chemosphere.2022.136456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/23/2022] [Accepted: 09/11/2022] [Indexed: 06/16/2023]
Abstract
The coexistence of pharmaceutical compounds and heavy metals in the aquatic environment has resulted in complications in the treatment process and thus, causing uproar among the citizens. The radical-based photocatalysis technology has aroused as an excellent method to eliminate both heavy metal and pharmaceutical compounds in the water. Herein, reported the utilization of the microemulsion technique for the preparation of nanoporous fibrous silica-molybdenum oxide (FSMo) towards simultaneous photocatalytic abatement of hexavalent chromium (Cr(VI)) and tetracycline (TC). The FESEM analysis showed the spherical morphology of the FSMo catalyst with dendrimeric silica fiber. The synthesized FSMo catalyst exhibited narrowed bandgap, high crystallinity, and well Mo element dispersion for enhanced photo-redox of Cr(VI) and TC. Remarkably, simultaneous remediation of the Cr(VI) and TC over FSMo demonstrated superior photocatalytic efficiency, 69% and 75%, respectively, than in the individual system, possibly due to the effective separation of photoinduced charges. The introduction of the Mo element to the silica framework via microemulsion technique demonstrated better dispersion of Mo compared to the incipient wetness impregnation method and thus, yielded higher photocatalytic activity towards simultaneous removal of TC and Cr(VI). Besides, quenching experiments revealed the electrons and holes as the active species that play a dominant role in the simultaneous photo-redox of Cr(VI) and TC. Lastly, the FSMo catalyst demonstrated high stability after four continuous cycles of simultaneous photocatalysis reactions, implying its potential as a suitable material for practical wastewater treatments.
Collapse
Affiliation(s)
- N M Izzudin
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - M W Ali
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310 UTM Johor Bahru, Johor, Malaysia
| | - F F A Aziz
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - M S Azami
- Faculty of Applied Sciences, Universiti Teknologi MARA Perlis, 02600 Arau, Perlis, Malaysia
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - A A Fauzi
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - N Ibrahim
- Faculty of Civil Engineering Technology, Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia
| | - R Saravanan
- Department of Mechanical Engineering, Universiti of Tarapacá, Avda. General Velasquez, 1775, Arica, Chile
| | - M H Hassim
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| |
Collapse
|
11
|
Nicholson J, Wallace N, Rangaswamy G, Ibrahim N, Rock K, Cunningham M, Elbeltagi N. Revision and Implementation of a New National Training Curriculum for Radiation Oncology. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
12
|
Nolan GS, Dunne JA, Lee AE, Wade RG, Kiely AL, Pritchard Jones RO, Gardiner MD, Abbassi O, Abdelaty M, Ahmed F, Ahmed R, Ali S, Allan A, Allen L, Anderson I, Bakir A, Berwick D, Sarala BBN, Bhat W, Bloom O, Bolton L, Brady N, Campbell E, Capitelli-McMahon H, Cassell O, Chalhoub X, Chalmers R, Chan J, Chu HO, Collin T, Cooper K, Curran TA, Cussons D, Daruwalla M, Dearden A, Delikonstantinou I, Dobbs T, Dunlop R, El-Muttardi N, Eleftheriadou A, Elamin SE, Eriksson S, Exton R, Fourie LR, Freethy A, Gardner E, Geh JL, Georgiou A, Georgiou M, Gilbert P, Gkorila A, Green D, Haeney J, Hamilton S, Harper F, Harrison C, Heinze Z, Hemington-Gorse S, Hever P, Hili S, Holmes W, Hughes W, Ibrahim N, Ismail A, Jallali N, James NK, Jemec B, Jica R, Kaur A, Kazzazi D, Khan M, Khan N, Khashaba H, Khera B, Khoury A, Kiely J, Kumar S, Patel PK, Kumbasar DE, Kundasamy P, Kyle D, Langridge B, Liu C, Lo M, Macdonald C, Anandan SM, Mahdi M, Mandal A, Manning A, Markeson D, Matteucci P, McClymont L, Mikhail M, Miller MC, Munro S, Musajee A, Nasrallah F, Ng L, Nicholas R, Nicola A, Nikkhah D, O'Hara N, Odili J, Oudit D, Patel A, Patel C, Patel N, Patel P, Peach H, Phillips B, Pinder R, Pinto-Lopes R, Plonczak A, Quinnen N, Rafiq S, Rahman K, Ramjeeawon A, Rinkoff S, Sainsbury D, Schumacher K, Segaren N, Shahzad F, Shariff Z, Siddiqui A, Singh P, Sludden E, Smith JRO, Song M, Stodell M, Tanos G, Taylor K, Taylor L, Thomson D, Tiernan E, Totty JP, Vaingankar N, Toh V, Wensley K, Whitehead C, Whittam A, Wiener M, Wilson A, Wong KY, Wood S, Yeoh T, Yii NW, Yim G, Young R, Zberea D, Jain A. National audit of non-melanoma skin cancer excisions performed by plastic surgery in the UK. Br J Surg 2022; 109:1040-1043. [DOI: 10.1093/bjs/znac232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022]
Abstract
A national, multi-centre audit of non-melanoma skin cancer excisions by plastic surgery.
Collapse
Affiliation(s)
- Grant S Nolan
- Department of Plastic and Reconstructive Surgery, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Trust , Fulwood, Preston , UK
| | - Jonathan A Dunne
- Department of Plastic and Reconstructive Surgery, Charing Cross and St Mary’s Hospitals, Imperial College Healthcare NHS Trust , London , UK
| | - Alice E Lee
- Department of Plastic and Reconstructive Surgery, Charing Cross and St Mary’s Hospitals, Imperial College Healthcare NHS Trust , London , UK
| | - Ryckie G Wade
- Leeds Institute for Medical Research, University of Leeds , Leeds , UK
- Department of Plastic and Reconstructive Surgery, Leeds Teaching Hospitals NHS Trust , Leeds , UK
| | - Ailbhe L Kiely
- Department of Plastic and Reconstructive Surgery, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Trust , Fulwood, Preston , UK
| | - Rowan O Pritchard Jones
- Department of Plastic and Reconstructive Surgery, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust , Prescot , UK
| | - Matthew D Gardiner
- Department of Plastic and Reconstructive Surgery, Wexham Park Hospital, Frimley Health NHS Foundation Trust, Wexham , Slough , UK
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Oxford , UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Abhilash Jain
- Department of Plastic and Reconstructive Surgery, Charing Cross and St Mary’s Hospitals, Imperial College Healthcare NHS Trust , London , UK
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Oxford , UK
| | | |
Collapse
|
13
|
Eggermont A, Kicinski M, Blank C, Mandala M, Long G, Atkinson V, Dalle S, Haydon A, Meshcheryakov A, Khattak A, Carlino M, Sandhu S, Puig Sarda S, Ascierto P, Lorigan P, Grebennik D, Ibrahim N, Marreaud S, Suciu S, Robert C. 804P Pembrolizumab versus placebo after complete resection of high-risk stage III melanoma: 5-year results of the EORTC 1325-MG/Keynote-054 double-blinded phase III trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
14
|
Abd Wahab NZ, Ibrahim N. Styrylpyrone Derivative (SPD) Extracted from Goniothalamus umbrosus Binds to Dengue Virus Serotype-2 Envelope Protein and Inhibits Early Stage of Virus Replication. Molecules 2022; 27:molecules27144566. [PMID: 35889438 PMCID: PMC9316064 DOI: 10.3390/molecules27144566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/03/2022] [Accepted: 07/06/2022] [Indexed: 11/16/2022] Open
Abstract
A study was conducted to investigate the anti-viral effect of a styrylpyrone derivative (SPD) called goniothalamin and the effects on the dengue virus serotype 2 (DENV-2) replication cycle. The SPD was prepared from the root of Goniothalamus umbrosus after purification with petroleum ether. The isolated SPD was then subjected to gas chromatography–mass spectrometry (GC-MS) and nuclear magnetic resonance (NMR) analyses for structure validation. The cytotoxicity of the SPD was evaluated using a cell viability assay, while the anti-viral activity of the SPD towards DENV-2 was confirmed by conducting a foci reduction assay which involved virus yield reduction, time-of-addition, and time removal assays. Transcriptomic analysis via quantitative real-time polymerase chain reaction (qRT-PCR) using the DENV-2 E gene was conducted to investigate the level of gene transcript. Immunocytochemistry analysis was used to investigate the effects of SPD treatment on protein E expression. Finally, software molecular docking of the SPD and E protein was also performed. The cytotoxicity assay confirmed that the SPD was not toxic to Vero cells, even at the highest concentration tested. In the time-of-addition assay, more than 80% foci reduction was observed when SPDs were administered at 2 h post-infection (hpi), and the reduction percentage then dropped with the delay of the treatment time, suggesting the inhibition of the early replication cycle. However, the time removal assay showed that more than 80% reduction could only be observed after 96 h post-treatment with the SPD. Treatment with the SPD reduced the progeny infectivity when treated for 24 h and was dose-dependent. The result showed that transcript level of the E gene in infected cells treated with the SPD was reduced compared to infected cells without treatment. In immunocytochemistry analysis, the DENV-2 E protein exhibited similar expression trends, shown by the gene transcription level. Molecular docking showed that the SPD can interact with E protein through hydrogen bonds and other interactions. Overall, this study showed that SPDs have the potential to be anti-DENV-2 via a reduction in viral progeny infectivity and a reduction in the expression of the DENV-2 E gene and protein at different phases of viral replication. SPDs should be further researched to be developed into an effective anti-viral treatment, particularly for early-phase dengue viral infection.
Collapse
Affiliation(s)
- Noor Zarina Abd Wahab
- School of Biomedicine, Faculty of Health Sciences, Universiti Sultan Zainal Abidin, Kuala Nerus 21300, Terengganu, Malaysia
- Correspondence: ; Tel.: +60-096688574
| | - Nazlina Ibrahim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;
| |
Collapse
|
15
|
Bashir MF, Elechi HA, Jarrett OO, Oyenusi EE, Oduwole A, Ibrahim N, Ohuche I, Adedeji IA, Adamu S, Jingina J, Adamu AS, Dattijo LM, Misau YA. Cord Blood Thyroid Stimulating Hormone Values in Healthy Term Babies delivered at Abubakar Tafawa Balewa University Teaching Hospital Bauchi, Northeastern Nigeria. West Afr J Med 2022; 39:603-608. [PMID: 35749648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Congenital hypothyroidism is one of the most common preventable causes of mental retardation and clinical manifestations are often subtle or absent at birth and hence the need for screening. Implementation of newborn screening requires local normative values. OBJECTIVES To determine the normative values of cord Thyroid Stimulating Hormone (TSH) among term babies in Bauchi, Northeast Nigeria and compare it with that from other centers in Nigeria. METHODOLOGY Cord blood samples from 200 term babies were analyzed for TSH by Fluorescence Immunoassay technique in this descriptive cross-sectional study. A cut-off of >20 µIU/ml was used for recall. The mean and range were determined and compared with those of previous local studies using t-test. Impact of some maternal and infant factors on TSH was also assessed. RESULTS The overall mean (SD) cord TSH was 3.74 (±1.99) µIU/ ml and the range was 0.73 to 15.22 µIU/ml (2.5th to 97.5th centile) and none had TSH > 20 µIU/ml and hence our recall rate was 0%. The mean cord TSH was comparable to that reported by a lone local multicenter study (p = 0.120) but significantly different from that of 3 other local studies (p < 0.001). There was also no significant difference between the means of different gender, birth weight groups, mode of delivery, socio-economic classes, maternal age and parity. CONCLUSION The Cord blood TSH level of most term newborn in Bauchi, similar to other Nigerian studies, is < 10 µIU/ml with a few but significant percentage recording cord TSH level > 10 µIU/ml. Gender, birth weight, mode of delivery, socio-economic class, maternal age and parity were not significantly related to cord TSH level. The mean blood TSH values from different studies across the country tend to vary based on the assay technique. We recommend a nationwide multicenter study with a much larger sample size, lower cutoff value for recall and a unified sample processing laboratory if national normative values are to be developed.
Collapse
Affiliation(s)
- M F Bashir
- Department of Paediatrics, College of Medical Sciences, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - H A Elechi
- Department of Paediatrics, University of Maiduguri, Maiduguri, Nigeria
| | - O O Jarrett
- Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - E E Oyenusi
- Department of Paediatrics, College of Medicine, University of Lagos, Nigeria
| | - A Oduwole
- Department of Paediatrics, College of Medicine, University of Lagos, Nigeria
| | - N Ibrahim
- Department of Paediatrics, Federal Medical Centre Katsina, Nigeria
| | - I Ohuche
- Department of Paediatrics, University of Nigeria Teaching Hospital Enugu, Nigeria
| | - I A Adedeji
- Department of Paediatrics, College of Medical Sciences, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - S Adamu
- Department of Chemical Pathology, College of Medical Sciences, Gombe State University, Gombe, Nigeria
| | - J Jingina
- Department of Paediatrics, Abubakar Tafawa Balewa University Teaching Hospital, Bauchi, Nigeria
| | - A S Adamu
- Department of Paediatrics, College of Medical Sciences, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - L M Dattijo
- Department of Obstetrics and Gynaecology, Abubakar Tafawa Balewa University Teaching Hospital Bauchi, Nigeria
| | - Y A Misau
- Department of Community Medicine, College of Medical Sciences, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| |
Collapse
|
16
|
Hussin A, Yusof R, Nor Rahim MY, Dalusim F, Othman NI, Ibrahim N, Shahidan MA. True-positive reflex threshold value for HCV antibody screening test. J Infect Dev Ctries 2022; 16:522-527. [DOI: 10.3855/jidc.13750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 04/18/2021] [Indexed: 10/31/2022] Open
Abstract
Introduction: The use of a signal-to-cut-off ratio has been recommended by the Centre for Disease Control and Prevention to determine the need for further validation using a supplemental test. In this study, we aimed to determine the optimal true-positive signal-to-cut-off ratio for the ABBOTT ARCHITECT i2000SR immunoassay (Abbott Laboratories, Illinois, USA), using the Serodia® HCV particle agglutination (HCV-PA) assay (Fujirebio Inc, Tokyo, Japan) as the reference test for anti-HCV screening.
Methodology: We analysed a total of 13,240 specimens using the ARCHITECT i2000SR immunoassay and subsequently subjected all the reactive specimens with a signal-to-cut-off ratio ≥ 1.00 (n = 267) to the Serodia® HCV-PA reference assay. Receiver operating characteristic (ROC) curve analysis was carried out and performance characteristics for each signal-to-cut-off ratio were determined. The selected signal-to-cut-off ratio value was then assessed using a line immunoassay (LIA) test.
Results: ROC curve analysis determined that the optimal signal-to-cut-off ratio was 5.05, which gave the highest Youden’s Index (J) value of 0.89, with a sensitivity of 93.1% (88.9-97.2), a specificity of 96.0% (92.4-99.4), a positive predictive value of 96.4% (93.3-99.5), and a negative predictive value of 92.2% (87.5-96.8). Validation of the optimal S/Co value using the LIA test yielded an accuracy of 91.8%, with sensitivity and specificity values of 92.0% and 91.7%, respectively.
Conclusions: The optimal signal-to-cut-off ratio value for the ARCHITECT i2000SR immunoassay, which was determined using HCV-PA assay as the reference test and validated using a HCV-LIA assay, showed high sensitivity and specificity, and may be used in routine anti-HCV screening.
Collapse
|
17
|
Carrington-Windo E, Leong S, Ibrahim N, Hepburn T, Pope-Jones S. 314 Biodegradable Temporising Matrix (BTM) Use in a Traumatic Chest Wound: A Case Report. Br J Surg 2022. [DOI: 10.1093/bjs/znac039.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
We describe the innovative use of biodegradable temporising matrix (BTM) in a large traumatic chest wound in a 23-year-old lady at the Welsh Centre for Burns and Plastic Surgery. The wound was sustained after the patient fell from a tractor into a large silage rake, resulting in injuries to her chest and limbs. Following meticulous debridement, the resulting full thickness skin defect measured 30x30 cm extending from the sternal notch to the upper abdomen, with bone, muscle, and breast tissue exposure. No donor sites for free flap reconstruction were available due to the limb injuries.
BTM is a recently developed synthetic dermal substitute and has been utilised to achieve soft tissue coverage in complex wounds i.e., post debridement in burns, traumatic injuries, and necrotising fasciitis. It was used in this case as it confers a number of advantages against skin graft alone such as reduced susceptibility to contracture and the ability to cover small areas of exposed bone. It also demonstrates reduced susceptibility to infection compared with other dermal substitutes.
To our knowledge, this is the first use of BTM to cover breast tissue. The central chest is a difficult anatomical region to reconstruct due to the importance of maintaining breast contour and avoiding wound contracture and deformity. The patient was closely followed up in dressing clinic and application of split skin autograft over the delaminated achieved an aesthetically excellent and functionally result, with breast contour maintained and full range of movement at the axilla.
Collapse
Affiliation(s)
| | - S. Leong
- Welsh Centre of Burns and Plastic Surgery, Swansea, United Kingdom
| | - N. Ibrahim
- Welsh Centre of Burns and Plastic Surgery, Swansea, United Kingdom
| | - T. Hepburn
- Cardiff University, Cardiff, United Kingdom
| | - S. Pope-Jones
- Welsh Centre of Burns and Plastic Surgery, Swansea, United Kingdom
| |
Collapse
|
18
|
Shaima AF, Mohd Yasin NH, Ibrahim N, Takriff MS, Gunasekaran D, Ismaeel MY. Unveiling antimicrobial activity of microalgae Chlorella sorokiniana (UKM2), Chlorella sp. (UKM8) and Scenedesmus sp. (UKM9). Saudi J Biol Sci 2022; 29:1043-1052. [PMID: 35197773 PMCID: PMC8848016 DOI: 10.1016/j.sjbs.2021.09.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/21/2021] [Accepted: 09/25/2021] [Indexed: 12/23/2022] Open
Abstract
Microalgae represent promising sources of bioactive compounds for pharmaceutical and industrial applications. The emergence of antibiotic resistant bacteria leads to the need to explore new cost-effective, safe, and potent bioactive compounds from the microalgae. This study aimed to investigate the potential of local microalgae for their antimicrobial properties and bioactive compounds. Three local microalgae namely Chlorella sorokiniana (UKM2), Chlorella sp. UKM8, and Scenedesmus sp. UKM9 biomass methanol extracts (ME) were prepared and tested against Gram-positive and Gram-negative bacteria. Chlorella sp. UKM8-ME showed the highest antibacterial activity. UKM8-ME minimum inhibitory concentrations were in the range of 0.312 to 6.25 mg/mL. Cytotoxicity evaluation using MTT assay showed that the microalgae methanolic extracts did not exhibit cytotoxicity against Vero-cells. The UKM8-ME was mainly containing 28 compounds from the Gas Chromatography-Mass Spectrometry (GC–MS) analysis. Major compounds of UKM8-ME included phenol (18.5%), hexadecanoic acid (18.25%), phytol (14.43%), 9,12-octadecadienoic acid (13.69%), and bicyclo[3.1.1]heptane (7.23%), which have been previously described to possess antimicrobial activity. Hence, Chlorella sp. (UKM8) methanol extracts showed promising antibacterial activity. More comprehensive studies are required to purify these antimicrobial compounds and develop our understanding on their mechanism in UKM8-ME to unleash their specific potential.
Collapse
|
19
|
Abd Wahab NZ, Ganasen T, Rahman NIA, Ibrahim N. In vitro virucidal activity of Kyllinga nemoralis aqueous extract against herpes simplex virus. J App Biol Biotech 2022. [DOI: 10.7324/jabb.2023.63516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
20
|
Fouzi SS, Abd Wahab NZ, Yan LC, Ibrahim N. Styrylpyrone Derivative from Goniothalamus sp.: A Powerful Drug for Fighting Against Herpes Simplex Virus Type 1. PJ 2021; 13:1598-1606. [DOI: 10.5530/pj.2021.13.206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
21
|
Abu Saadeh F, Marchocki Z, O'Toole SA, Ibrahim N, Gleeson N, Norris LA. Extended thromboprophylaxis post gynaecological cancer surgery; the effect of weight adjusted and fixed dose LMWH (Tinzaparin). Thromb Res 2021; 207:25-32. [PMID: 34530386 DOI: 10.1016/j.thromres.2021.08.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/16/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Gynaecological cancer surgery is associated with high rates of venous thromboembolism (VTE) despite recommended prophylaxis. We sought to investigate the impact of extended prophylaxis with fixed dose and weight based LMWH in patients undergoing gynaecological cancer surgery. METHODS VTE rates were recorded in patients who received LMWH prophylaxis (4500 IU Tinzaparin once daily) for the duration of hospital stay (2006-2012) (n = 610) and were compared with VTE rates in patients who underwent surgery after the introduction of extended prophylaxis (3500/4500 IU Tinzaparin for patients with BMI < 40kg/m2 and 75 IU/kg for BMI > 40 kg/m2) (2012-2017) (n = 651). Peak (4 h) anti-Xa levels in a subset of patients were also evaluated. RESULTS 73 (5.7%) cases of VTE were recorded during 1 year of follow-up. 20 cases occurred during hospital stay. There was no significant difference in the rate of VTE between the extended prophylaxis cohort and the standard prophylaxis cohort. 23/24 patients who developed VTE in the extended prophylaxis cohort received a fixed (4500 units) dose of Tinzaparin. 63% of patients who received a fixed LMWH dose had peak anti-Xa levels below the target range (0.2-0.4 IU/ml). Peak anti-Xa was lower in patients who subsequently developed VTE compared with those who received either fixed dose (P = 0.041) and weight adjusted Tinzaparin (P = 0.0006). CONCLUSIONS Extended prophylaxis with Tinzaparin does not significantly reduce VTE rates in gynaecological cancer patients post surgery. Peak anti-Xa levels may be suboptimal in many patients receiving a fixed LMWH dose. Further studies are required to determine whether weight adjusted doses of Tinzaparin may provide more effective prophylaxis following gynaecological cancer surgery.
Collapse
Affiliation(s)
- F Abu Saadeh
- Department of Obstetrics and Gynaecology, Trinity Centre for Health Sciences, St. James's Hospital, Dublin 8, Ireland; Division of Gynaecology Oncology, St James's Hospital, Dublin 8, Ireland; Trinity St. James's Cancer Institute, St. James's Hospital, Dublin 8, Ireland.
| | - Z Marchocki
- Department of Obstetrics and Gynaecology, Trinity Centre for Health Sciences, St. James's Hospital, Dublin 8, Ireland; Division of Gynaecology Oncology, St James's Hospital, Dublin 8, Ireland; Trinity St. James's Cancer Institute, St. James's Hospital, Dublin 8, Ireland.
| | - S A O'Toole
- Department of Obstetrics and Gynaecology, Trinity Centre for Health Sciences, St. James's Hospital, Dublin 8, Ireland; Trinity St. James's Cancer Institute, St. James's Hospital, Dublin 8, Ireland; Dept of Histopathology, Trinity College Dublin, Ireland.
| | - N Ibrahim
- Department of Obstetrics and Gynaecology, Trinity Centre for Health Sciences, St. James's Hospital, Dublin 8, Ireland; Division of Gynaecology Oncology, St James's Hospital, Dublin 8, Ireland.
| | - N Gleeson
- Department of Obstetrics and Gynaecology, Trinity Centre for Health Sciences, St. James's Hospital, Dublin 8, Ireland; Division of Gynaecology Oncology, St James's Hospital, Dublin 8, Ireland; Trinity St. James's Cancer Institute, St. James's Hospital, Dublin 8, Ireland.
| | - L A Norris
- Department of Obstetrics and Gynaecology, Trinity Centre for Health Sciences, St. James's Hospital, Dublin 8, Ireland; Trinity St. James's Cancer Institute, St. James's Hospital, Dublin 8, Ireland.
| |
Collapse
|
22
|
Long GV, Arance A, Mortier L, Lorigan P, Blank C, Mohr P, Schachter J, Grob JJ, Lotem M, Middleton MR, Neyns B, Steven N, Ribas A, Walpole E, Carlino MS, Lebbe C, Sznol M, Jensen E, Leiby MA, Ibrahim N, Robert C. Antitumor activity of ipilimumab or BRAF ± MEK inhibition after pembrolizumab treatment in patients with advanced melanoma: analysis from KEYNOTE-006. Ann Oncol 2021; 33:204-215. [PMID: 34710571 DOI: 10.1016/j.annonc.2021.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Antitumor activity of ipilimumab or BRAF ± MEK inhibitors (BRAFi ± MEKi) following pembrolizumab administration in melanoma is poorly characterized. PATIENTS AND METHODS In the phase III KEYNOTE-006 study, patients with unresectable stage III/IV melanoma received pembrolizumab (10 mg/kg) once every 2 or 3 weeks (Q3W) or ipilimumab (3 mg/kg) Q3W. The current post hoc analysis evaluates outcomes with ipilimumab or BRAFi ± MEKi as first subsequent systemic therapy after pembrolizumab administration and includes patients who completed or discontinued pembrolizumab after one or more dose. Pembrolizumab arms were pooled. RESULTS At data cut-off (4 December 2017), median follow-up was 46.9 months. Of 555 pembrolizumab-treated patients, first subsequent therapy was ipilimumab for 103 (18.6%) and BRAFi ± MEKi for 59 (10.6%) [33 received BRAFi + MEKi, 26 BRAFi alone; 37 (62.7%) were BRAFi ± MEKi naïve]. In the subsequent ipilimumab group, ORR with previous pembrolizumab was 17.5% [1 complete response (CR); 17 partial response (PR)]; 79.6% had discontinued pembrolizumab due to progressive disease (PD); median overall survival (OS) was 21.5 months. ORR with subsequent ipilimumab was 15.5%; 11/16 responses (8 CRs; 3 PRs) were ongoing. ORR with subsequent ipilimumab was 9.7% for patients with PD as best response to pembrolizumab. Median OS from ipilimumab initiation was 9.8 months. In the subsequent BRAFi ± MEKi group, ORR with previous pembrolizumab was 13.5% (8 PR); 76.3% had discontinued pembrolizumab due to PD; median OS was 17.9 months. ORR with subsequent BRAFi ± MEKi was 30.5%, 7/18 responses (4 CR, 3 PR) were ongoing. Median OS from BRAFi ± MEKi initiation was 12.9 months. ORR for BRAFi ± MEKi-naïve patients who received subsequent BRAFi ± MEKi was 43.2%; 6/16 were ongoing (3 CR, 3 PR). CONCLUSIONS Ipilimumab and BRAFi ± MEKi have antitumor activity as first subsequent therapy after pembrolizumab in patients with advanced melanoma.
Collapse
Affiliation(s)
- G V Long
- Melanoma Institute Australia, The University of Sydney, Mater Hospital, Sydney, Australia; Faculty of Medicine & Health, The University of Sydney, Sydney, Australia; Charles Perkins Centre, The University of Sydney, Sydney, Australia; Royal North Shore Hospital, Sydney, Australia.
| | - A Arance
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - L Mortier
- Université Lille, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - P Lorigan
- Division of Cancer Sciences, University of Manchester, Manchester; Christie NHS Foundation Trust, Manchester, UK
| | - C Blank
- Netherlands Cancer Institute, Amsterdam, Netherlands
| | - P Mohr
- Elbe-Klinikum Buxtehude, Buxtehude, Germany
| | - J Schachter
- Ella Lemelbaum Institute for Immuno-Oncology, Sheba Medical Center at Tel Hashomer, Ramat Gan, Israel
| | - J-J Grob
- Aix Marseille University, Hôpital de la Timone, Marseille, France
| | - M Lotem
- Sharett Institute of Oncology, Hadassah Hebrew Medical Center, Jerusalem, Israel
| | - M R Middleton
- The Churchill Hospital and The University of Oxford, Oxford, UK
| | - B Neyns
- Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - N Steven
- Queen Elizabeth Hospital, Birmingham, UK
| | - A Ribas
- David Geffen School of Medicine, University of California, Los Angeles, USA
| | - E Walpole
- Princess Alexandra Hospital, Brisbane, Australia; University of Queensland, Brisbane, Australia
| | - M S Carlino
- Melanoma Institute Australia, The University of Sydney, Mater Hospital, Sydney, Australia; Westmead and Blacktown Hospitals, Melanoma Institute Australia, Sydney, Australia; University of Sydney, Sydney, Australia
| | - C Lebbe
- Université de Paris, AP-HP Dermatology and CIC, INSERM U976, Saint Louis Hospital, Paris, France
| | - M Sznol
- Yale Cancer Center, New Haven, USA
| | - E Jensen
- Merck & Co., Inc., Kenilworth, USA
| | | | | | - C Robert
- Department of Oncology, Service of Dermatology, Gustave Roussy, Villejuif, France; Paris-Saclay University, Orsay, France
| |
Collapse
|
23
|
Ibrahim N, Morhij R, Patel NG. 802 Preservation of a Reconstructed Breast Whilst Undertaking Total Sternal Resection for Metastatic Breast Cancer with a Pedicled Latissimus Dorsi Flap and a Methyl Methacrylate Mesh Sandwich. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Background
Sternal resection and reconstruction are a complex and challenging procedure that requires a multidisciplinary approach and input from both thoracic and plastic surgeons. Limited data exist on sternal resection and reconstruction for secondary breast malignancies. The goals of sternal and anterior chest wall reconstruction are to maintain chest wall integrity, rigidity, and the negative pressure necessary for respiratory and cardiac functions, protect intrathoracic contents, and restore the chest wall contour.
Case Presentation
A 40-year-old lady developed a solitary sternal metastatic lesion three years after her initial diagnosis with BRCA2 positive breast cancer. She had previously undergone left mastectomy, axillary clearance and implant reconstruction followed by right prophylactic mastectomy and implant reconstruction. She also had neoadjuvant chemotherapy and adjuvant chest wall radiotherapy. Her solitary sternal metastasis was managed with curative intent by complete sternal resection and a combined alloplastic and autologous sternal reconstruction with methyl methacrylate sandwiched between a polypropylene mesh and covered with a pedicled latissimus dorsi flap. The flap was successfully tunnelled under the previous implant-based breast reconstruction capsule. The surgical margins were clear, there were no post-operative complications and no further disease. The patient achieved good cosmetic outcomes.
Conclusions
We describe the first case of breast implant preservation whilst undertaking total sternal resection for an isolated sternal metastasise and reconstruction with a pedicle latissimus dorsi flap and methyl methacrylate mesh sandwich. We advocate combined approach with thoracic and plastic surgery, which allows a safe single stage procedure.
Collapse
Affiliation(s)
- N Ibrahim
- Leicester Royal Infirmary, Leicester, United Kingdom
| | - R Morhij
- Leicester Royal Infirmary, Leicester, United Kingdom
| | - N G Patel
- Leicester Royal Infirmary, Leicester, United Kingdom
| |
Collapse
|
24
|
Saw LH, Leo BF, Nor NSM, Yip CW, Ibrahim N, Hamid HHA, Latif MT, Lin CY, Nadzir MSM. Modeling aerosol transmission of SARS-CoV-2 from human-exhaled particles in a hospital ward. Environ Sci Pollut Res Int 2021; 28:53478-53492. [PMID: 34036501 PMCID: PMC8148403 DOI: 10.1007/s11356-021-14519-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 05/17/2021] [Indexed: 06/04/2023]
Abstract
The COVID-19 pandemic has plunged the world into uncharted territory, leaving people feeling helpless in the face of an invisible threat of unknown duration that could adversely impact the national economic growths. According to the World Health Organization (WHO), the SARS-CoV-2 spreads primarily through droplets of saliva or discharge from the mouth or nose when an infected person coughs or sneezes. However, the transmission of the SARS-CoV-2 through aerosols remains unclear. In this study, computational fluid dynamic (CFD) is used to complement the investigation of the SARS-CoV-2 transmission through aerosol. The Lagrangian particle tracking method was used to analyze the dispersion of the exhaled particles from a SARS-CoV-2-positive patient under different exhale activities and different flow rates of chilled (cooling) air supply. Air sampling of the SARS-CoV-2 patient ward was conducted for 48-h measurement intervals to collect the indoor air sample for particulate with diameter less than 2.5 μm. Then, the reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) was conducted to analyze the collected air sample. The simulation demonstrated that the aerosol transmission of the SARS-CoV-2 virus in an enclosed room (such as a hospital ward) is highly possible.
Collapse
Affiliation(s)
- Lip Huat Saw
- Lee Kong Chian, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 43000, Kajang, Selangor, Malaysia
| | - Bey Fen Leo
- Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Norefrina Shafinaz Md Nor
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Chee Wai Yip
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Nazlina Ibrahim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Haris Hafizal Abd Hamid
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Mohd Talib Latif
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Chin Yik Lin
- Department of Geology, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mohd Shahrul Mohd Nadzir
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| |
Collapse
|
25
|
Ludot M, Merlo M, Ibrahim N, Piot MA, Lefèvre H, Carles ME, Harf A, Moro MR. ["Somatic symptom disorders" in adolescence. A systematic review of the recent literature]. Encephale 2021; 47:596-604. [PMID: 34538623 DOI: 10.1016/j.encep.2021.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 04/02/2021] [Accepted: 04/18/2021] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Body expression of mental disorders is common in adolescence. Only two literature reviews over the last five years have been identified about somatoform disorders in children., The present article provides a systematic review of articles in English, which concern "Somatic Symptom and Related Disorders" according to the DSM-5 (Diagnostic and Statistical Manual - 5th Edition) among adolescents. METHODS The article search was made on Medline, Psychinfo, Google Scholar, BiomedCentral, Central and tripdatabase (for grey literature) according to PRISMA criteria and with the items "somatoform disorders" or "somatic symptom disorders". An age filter was applied for "adolescents", and a selection was done from the last five years. All articles concerning adolescents (often associated with children) were initially included, except for articles concerning eating disorders, dysmorphic disorders or adult population. Comments, editorials, opinion or descriptive articles were also excluded. The authors then carried out an analysis of the main topics, themes and questions covered in the selected publications and presented a descriptive synthesis. RESULTS A total of seventy-seven publications were included in the analysis, from three hundred and seventy-two publications. First, the terms used to refer to these "somatic symptom disorders" were varied, such as "somatization", "somatic complaints/symptoms", "functional disorder", "unexplained symptoms" and "somatoform disorders". Then, studies related just to adolescents were limited: most of studies included children and adolescents in their methodologies; and some of them questioned somatic symptoms from a developmental perspective. Case reports were the most represented articles among all medical specialties, with clinical descriptions about "functional neurological symptom disorder", "factitious disorder" and "somatic symptom disorder" with a medical disease, among children and adolescents. We sometimes observed a controversial borderline between psychological and somatic disorders. Various explanatory models appeared, especially the trauma path; familial and social environment was also pointed out, with a possible peer group effect; neurocognitive theories were finally described. The literature highlights the effectiveness of psychosocial therapies (especially the cognitive-behavioral therapy) and the importance of multidisciplinary management. Finally, a few studies with a qualitative methodology are represented. CONCLUSIONS Only nine articles included "somatic symptom disorder" in their titles, despite a terminology valued by many authors (compared to "somatoform disorders" from the DSM-IV). The heterogeneity of terminologies, case reports and explanatory models witness a lack of connexions between medical specialties. This could explain in part the wandering of adolescents and their families in the health care system. It could also contribute to the delay before diagnosis, especially when neurological symptoms exist, and a late referral for psychiatric consultation. Further studies are needed to understand difficulties to use a clinical pathway among medical specialties, when the benefit of amultidisciplinary approach seems to be unanimous.
Collapse
Affiliation(s)
- M Ludot
- Maison de Solenn, hôpital Cochin, 75014 Paris, France; PCPP, université de Paris, 92100 Boulogne-Billancourt, France; Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France.
| | - M Merlo
- Maison de Solenn, hôpital Cochin, 75014 Paris, France
| | - N Ibrahim
- Maison de Solenn, hôpital Cochin, 75014 Paris, France; PCPP, université de Paris, 92100 Boulogne-Billancourt, France; Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France; Groupe français de recherche en médecine et santé de l'adolescent, maison de Solenn, hôpital Cochin, 75014 Paris, France
| | - M-A Piot
- Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France; Faculté de santé, UFR de médecine, université de Paris, 75006 Paris, France; Service de psychiatrie de l'enfant, de l'adolescent et du jeune adulte, institut mutualiste Montsouris, 75014 Paris, France
| | - H Lefèvre
- Maison de Solenn, hôpital Cochin, 75014 Paris, France; PCPP, université de Paris, 92100 Boulogne-Billancourt, France; Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France; Groupe français de recherche en médecine et santé de l'adolescent, maison de Solenn, hôpital Cochin, 75014 Paris, France
| | - M-E Carles
- Maison de Solenn, hôpital Cochin, 75014 Paris, France; PCPP, université de Paris, 92100 Boulogne-Billancourt, France; Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France
| | - A Harf
- Maison de Solenn, hôpital Cochin, 75014 Paris, France; PCPP, université de Paris, 92100 Boulogne-Billancourt, France; Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France
| | - M R Moro
- Maison de Solenn, hôpital Cochin, 75014 Paris, France; PCPP, université de Paris, 92100 Boulogne-Billancourt, France; Inserm, CESP, Team DevPsy, UVSQ, université Paris-Saclay, 94807 Villejuif, France
| |
Collapse
|
26
|
Luke J, Rutkowski P, Queirolo P, Del Vecchio M, Mackiewicz J, Chiarion Sileni V, de la Cruz Merino L, Khattak M, Schadendorf D, Long G, Ascierto P, Mandala M, De Galitiis F, Sondak V, Scolyer R, Kirkwood J, Chen K, Ibrahim N, Ahsan S, Eggermont A. LBA3 Pembrolizumab versus placebo after complete resection of high-risk stage II melanoma: Efficacy and safety results from the KEYNOTE-716 double-blind phase III trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.2116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
27
|
Pinchman J, Izadi H, Hopkins C, Ibrahim N, Bunker K, Doñate F, Samatar A, Huang P. 528P Discovery of ZN-d5, a potent BCL-2 inhibitor with improved selectivity for BCL-2. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
28
|
AbdelMassih A, Gadalla M, Hussein E, Elahmady M, Zahra N, Eid MA, Hussein M, Hassan AA, Abou-Zeid AS, Hassan A, El Nahhas N, Emad N, Aboushadi N, Ibrahim N, Mokhtar S, El-Husseiny N, Kamel A, Hozaien R, Menshawey E, Ismail HA, Mokhles M, Menshawey R, Fouda R. The forgotten oral microbial transplantation for improving the outcomes of COVID-19. New Microbes New Infect 2021; 43:100923. [PMID: 34336224 PMCID: PMC8310390 DOI: 10.1016/j.nmni.2021.100923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/17/2021] [Accepted: 07/19/2021] [Indexed: 12/31/2022] Open
Abstract
Ever since the uncovering of the severe discrepancy of COVID-19 manifestations, irrespective of viral load, scientists have raced to locate and manage factors contributing to the genesis of a critical state. Recent evidence delineates the role of oral dysbiosis in the development of low-grade inflammation, characterized by the increase of inflammatory cytokines common to those fundamental to the development of severe COVID. Furthermore, high periodontopathic bacteria were recorded in severe acute respiratory syndrome in COVID patients, as well as its common provoking comorbidities such as diabetes and hypertension. This can be explained by the immigration and elimination of oral bacteria into the airways, which, in the context of an injured lung, allows for their preferential overgrowth familiar to that, causing the progression to advanced lung diseases. This is why we indicate the promising usage of oral microbiome transplantation as a treatment of oral microbial dysbiosis, not only associated with the worst outcomes of COVID-19 but also in other disorders of low-grade inflammation.
Collapse
Affiliation(s)
- A AbdelMassih
- Pediatric Cardiology Unit, Pediatrics' Department, Faculty of Medicine, Cairo University, Egypt.,Pediatric Cardio-Oncology Department, Children Cancer Hospital of Egypt (57357), Egypt
| | - M Gadalla
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - E Hussein
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - M Elahmady
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - N Zahra
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - M A Eid
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - M Hussein
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - A A Hassan
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - A S Abou-Zeid
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - A Hassan
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - N El Nahhas
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - N Emad
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - N Aboushadi
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - N Ibrahim
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - S Mokhtar
- Faculty of Dentistry, New Giza University, New Giza, Egypt.,Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - N El-Husseiny
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt.,Faculty of Dentistry, Cairo University, Egypt.,Pixagon Graphic Design Agency, Cairo, Egypt
| | - A Kamel
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - R Hozaien
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - E Menshawey
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - H A Ismail
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - M Mokhles
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - R Menshawey
- Research Accessibility Team (Students' and Interns' Research Program), Faculty of Medicine, Cairo University, Egypt
| | - R Fouda
- Clinical and Chemical Pathology Department, Faculty of Medicine, Cairo University, Egypt
| |
Collapse
|
29
|
Mair M, Raj L, Mahmood S, Fagiry R, Ahmed MM, Menon I, Ibrahim N, Ameerally P, Baker A, Vaidhyanath R. Diagnostic accuracy of magnetic resonance imaging in detecting depth of invasion of tongue cancers. Br J Oral Maxillofac Surg 2021; 59:1275-1279. [PMID: 34483009 DOI: 10.1016/j.bjoms.2021.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/01/2021] [Indexed: 10/21/2022]
Abstract
The recent eighth edition of the American Joint Committee on Cancer (AJCC) staging system has introduced depth of invasion (DOI) as one of its important components. DOI is also important for deciding neck management in superficial tongue cancers. Magnetic resonance imaging (MRI) is mainly used to assess DOI, and in this study we have evaluated the efficacy of MRI to detect it. This is a retrospective study consisting of 60 treatment-naïve tongue cancer patients operated on between July 2017 and June 2019. Patients underwent MR imaging on an Optima MR450W 1.5T unit, and MRI was reported by two experienced ead and eck adiologistss. Postoperative histological DOI was considered the gold standard. The correlation coefficient was derived for postoperative DOI and MRI-detected DOI. A subgroup analysis of superficial tongue cancer was also done. The mean MRI DOI was 13.7 mm and the mean histological DOI 12.45 mm. The shrinkage factor was 0.6 mm. Pearson's correlation coefficient was 0.80 (p=<0.001) for Radiologist 1 and 0.85 (p=<0.001) for Radiologist 2. The interobserver variation was low, with a correlation coefficient between the two radiologists of 0.965 (p=<0.001). For superficial tongue cancers there was moderate correlation for MRI and histologically-detected DOI with a kappa value of 0.681 (p=0.03). As per the ROC curve, the cut-off value for MRI DOI to predict nodal metastasis was 4.6 mm. MRI has high reliability to predict the DOI of tongue cancers. The interobserver variation was low. The diagnostic accuracy in cases of superficial tongue cancer was moderate.
Collapse
Affiliation(s)
- M Mair
- Head and Neck Surgery, University Hospitals of Leicester, United Kingdom.
| | - L Raj
- Head and Neck Surgery, University Hospitals of Leicester, United Kingdom
| | - S Mahmood
- Department of Oral & Maxillofacial Surgery, University Hospitals of Leicester, United Kingdom
| | - R Fagiry
- Department of Oral & Maxillofacial Surgery, University Hospitals of Leicester, United Kingdom
| | - M M Ahmed
- Department of Oral & Maxillofacial Surgery, University Hospitals of Leicester, United Kingdom
| | - I Menon
- Department of Radiology, University Hospitals of Leicester, United Kingdom
| | - N Ibrahim
- Department of Radiology, University Hospitals of Leicester, United Kingdom
| | - P Ameerally
- Department of Oral & Maxillofacial Surgery, Northampton General Hospital, United Kingdom
| | - A Baker
- Department of Oral & Maxillofacial Surgery, University Hospitals of Leicester, United Kingdom
| | - R Vaidhyanath
- Department of Radiology, University Hospitals of Leicester, United Kingdom
| |
Collapse
|
30
|
Abd Wahab NZ, Azizul A, Badya N, Ibrahim N. Antiviral Activity of an Extract from Leaves of the Tropical Plant Cynometra cauliflora. PJ 2021; 13:752-757. [DOI: 10.5530/pj.2021.13.96] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
31
|
Ibrahim B, Suppiah S, Piersson AD, Razali RM, Mohamad M, Abu Hassan H, Ibrahim N. Cardiovascular risk factors of Alzheimer's disease and other neurocognitive disorders in Malaysia. Med J Malaysia 2021; 76:291-297. [PMID: 34031325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
INTRODUCTION Risk factors for cardiovascular disease (CVD) have been increasingly implicated in the development of dementia but little is known about the effects in a Malaysian population. We aimed to determine the interaction between sociodemographic and CVD risk factors among the dementia and mild cognitive impairment (MCI) patients in Malaysia. MATERIALS AND METHODS A cross-sectional study was conducted in the memory clinic at Hospital Kuala Lumpur (HKL). Medical records data from 2014 to 2019 were extracted. Mini Mental State Examination (MMSE) test was used to assess the neurocognitive function of patients. RESULTS A total of 298 patients (30 MCI, and 268 dementia) were evaluated, with dementia patients consisting of 78 Alzheimer's disease (AD), 93 Vascular dementia (VaD), 94 Mixed dementia, 2 early-onset Alzheimer's disease (EOAD) and 1 Logopenic Progressive Aphasia type of AD (LPA). MCI and dementia were significantly associated with a history of CVD, particularly stroke (p=0.023). CONCLUSION Given that stroke significantly predicted the risk of developing vascular dementia among the patients in a central Malaysian population, lifestyle modifications are recommended to alleviate these risk factors of CVD.
Collapse
Affiliation(s)
- B Ibrahim
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, Malaysia
| | - S Suppiah
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, Malaysia.
| | - A D Piersson
- Universiti Kebangsaan Malaysia, Faculty of Health Sciences, Therapeutic and Investigative Studies, Centre for Diagnostic, Malaysia
| | - R M Razali
- Hospital Kuala Lumpur, Department of Medicine, Geriatric Unit, Malaysia
| | - M Mohamad
- Universiti Kebangsaan Malaysia, Faculty of Health Sciences, Therapeutic and Investigative Studies, Centre for Diagnostic, Malaysia
| | - H Abu Hassan
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, Malaysia
| | - N Ibrahim
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Psychiatry, Malaysia
| |
Collapse
|
32
|
Ibrahim N, Barruchet A, Moro MR, Blanchet C. Severe neutropenia in an anorexic adolescent girl: a stigma of underfeeding syndrome? Eat Weight Disord 2021; 26:1271-1275. [PMID: 32978756 DOI: 10.1007/s40519-020-01016-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/08/2020] [Indexed: 12/13/2022] Open
Abstract
PURPOSE We describe a case of severe, prolonged neutropenia in an adolescent girl hospitalized for anorexia nervosa (AN) which occurred during a refeeding procedure in the absence of refeeding syndrome. METHODS This case report includes retrospective anamnestic, clinical and biological data from the patient's medical record. A literature review was conducted on the haematological changes described in the undernutrition and refeeding periods, and also on recent data for underfeeding syndrome in patients with anorexia nervosa. CONCLUSION Leuconeutropenia is an adaptive condition observed in undernutrition in AN, usually rapidly and completely reversible in the course of refeeding and weight gain. We describe a rare case of severe, prolonged neutropenia despite appropriate care in the absence of refeeding syndrome and without gelatinous bone marrow transformation. We suggest that neutropenia in adolescent anorexia nervosa could be a stigma of underfeeding syndrome resulting from an overly cautious refeeding strategy. LEVEL OF EVIDENCE Level V, descriptive study.
Collapse
Affiliation(s)
- N Ibrahim
- APHP, Cochin Hospital, Maison de Solenn, 75014, Paris, France
| | - A Barruchet
- APHP, Cochin Hospital, Maison de Solenn, 75014, Paris, France
| | - M R Moro
- APHP, Cochin Hospital, Maison de Solenn, 75014, Paris, France
- University of Paris, PCPP, 92100, Boulogne-Billancourt, France
- University of Paris-Saclay-UVSQ, INSERM, CESP, Team DevPsy, 94805, Villejuif, France
| | - C Blanchet
- APHP, Cochin Hospital, Maison de Solenn, 75014, Paris, France.
- University of Paris, PCPP, 92100, Boulogne-Billancourt, France.
- University of Paris-Saclay-UVSQ, INSERM, CESP, Team DevPsy, 94805, Villejuif, France.
| |
Collapse
|
33
|
Ahmed HMA, Ibrahim N, Mohamad NS, Nambiar P, Muhammad RF, Yusoff M, Dummer PMH. Application of a new system for classifying root and canal anatomy in studies involving micro-computed tomography and cone beam computed tomography: Explanation and elaboration. Int Endod J 2021; 54:1056-1082. [PMID: 33527452 DOI: 10.1111/iej.13486] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 01/27/2021] [Indexed: 12/15/2022]
Abstract
Adequate knowledge and accurate characterization of root and canal anatomy is an essential prerequisite for successful root canal treatment and endodontic surgery. Over the years, an ever-increasing body of knowledge related to root and canal anatomy of the human dentition has accumulated. To correct deficiencies in existing systems, a new coding system for classifying root and canal morphology, accessory canals and anomalies has been introduced. In recent years, micro-computed tomography (micro-CT) and cone beam computed tomography (CBCT) have been used extensively to study the details of root and canal anatomy in extracted teeth and within clinical settings. This review aims to discuss the application of the new coding system in studies using micro-CT and CBCT, provide a detailed guide for appropriate characterization of root and canal anatomy and to discuss several controversial issues that may appear as potential limitations for proper characterization of roots and canals.
Collapse
Affiliation(s)
- H M A Ahmed
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - N Ibrahim
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - N S Mohamad
- Centre of Medical Imaging, Faculty of Health Sciences, Universiti Teknologi MARA (UiTM) Selangor Branch, Puncak Alam Campus, Bandar Puncak Alam, Selangor, Malaysia
| | - P Nambiar
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Department of Oral Biology and Biomedical Sciences, Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, Malaysia
| | - R F Muhammad
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - M Yusoff
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - P M H Dummer
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
| |
Collapse
|
34
|
Irnidayanti Y, Sutiono DR, Ibrahim N, Wisnuwardhani PH, Santoso A. Potential neuroprotective of trans-resveratrol a promising agent tempeh and soybean seed coats-derived against beta-amyloid neurotoxicity on primary culture of nerve cells induced by 2-methoxyethanol. BRAZ J BIOL 2021; 82:e235781. [PMID: 33787733 DOI: 10.1590/1519-6984.235781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/16/2020] [Indexed: 11/22/2022] Open
Abstract
Resveratrol, a natural polyphenol found in tempeh, has not been investigated especially in vitro as a neuroprotective agent against 2-methoxyethanol (2-ME)-induced beta-amyloid cytotoxicity. Beta amyloid peptides (Aβ) could initiate neurotoxic events and neuron-inflammatory response via microglial activation. However, it remains unknown whether the neurotoxic effect of beta-amyloid and/or associated with the potential of 2-ME to induce neurotoxic effects on primary culture of nerve cells induced by 2-ME. This study investigated potential neuroprotective of trans-resveratrol a promising agent tempeh and soybean seed coats-derived against beta-amyloid cytotoxicity on primary culture of nerve cells induced by 2-methoxyethanol. Biotium and MTT assays were used to analyze neurons, which were isolated from the cerebral cortex of fetal mice at gestation day 19 (GD-19). A standard solution of 2-methoxyethanol was dosed at 10 μL. The cultured cells were randomly divided into the following groups: (1) 2-ME group + resveratrol standard, (2) 2-ME group + resveratrol isolated from tempeh, (3) 2-ME group + resveratrol isolated from soybean seed coats, and (4) the control group, without the addition of either 2-ME or resveratrol. Exposure of the primary cortical neuron cells to beta-amyloid monoclonal antibody pre-incubated for 24 h with 10 µL of 4.2 µg/mL resveratrol and 7.5 mmol/l 2-methoxy-ethanol additions. Here, we report that the addition of 2-ME and resveratrol (standard and isolated from tempeh) of cell culture at concentrations of 1.4, 2.8 and 4.2 µg/mL showed that the majority of neurons grew well. In contrast, after exposure to 2-ME and Beta-amyloid, showed that glial activated. These findings demonstrate a role for resveratrol in neuroprotective-neurorescuing action.
Collapse
Affiliation(s)
- Y Irnidayanti
- Universitas Negeri Jakarta, Faculty of Mathematics and Science, Department of Animal Development, Biology, Jakarta, Indonesia
- Jakarta State University, Faculty of Mathematics and Natural Sciences, Research Group of Biology, Jakarta, Indonesia
| | - D R Sutiono
- Jakarta State University, Faculty of Mathematics and Natural Sciences, Research Group of Biology, Jakarta, Indonesia
| | - N Ibrahim
- Universitas Indonesia, Faculty of Medicine, Jakarta, Indonesia
| | - P H Wisnuwardhani
- Indonesian Institute of Sciences - LIPI, Biotechnology, Bogor, Indonesia
| | - A Santoso
- Indonesian Institute of Sciences - LIPI, Biotechnology, Bogor, Indonesia
| |
Collapse
|
35
|
Abstract
Background and Objectives: Catharanthus roseus is generally used to treat many diseases in folklore remedies. The present study is aimed at determining phytochemical constituents, cytotoxicity and antiviral activities for crude extract of the plant. Materials and Methods: The whole plant of C. roseus was extracted using methanol extraction method. Phytochemical qualitative screening was carried out for C. roseus extract according to standard procedures used to test for the presence of alkaloid, saponin, terpenoid and steroid. Cytotoxicity was assessed using 3-(4,5-dimethylthiazol-2,5-diphenyltetrazolium bromide (MTT) assay. Plaque reduction assays were carried out to evaluate the antiviral activity of C. roseus extract against herpes simplex virus type 1 (HSV-1). These include post-treatment, pre-treatment and virucidal assays. Results: C. roseus extract contain secondary metabolites such as alkaloid, saponin and terpenoid but does not contain steroid. Cytotoxicity screening against Vero cells using MTT assay showed that the CC50 values for crude extract of C. roseus was 0.5 mg/mL. The extract prepared from C. roseus possesses phytochemical compound that was non-cytotoxic to the cell with potential antiviral activity. Plaque reduction assays against herpes simplex virus type 1 (HSV-1) showed that the selective indices (SI = CC50 / EC50) of C. roseus extract in post-treatment, pre-treatment and virucidal assays were 36, 20 and 4.7 respectively. The results revealed that the extract prepared from C. roseus possesses phytochemical compound that was non-cytotoxic to the cell with potential antiviral activity. Conclusion: This study showed that C. roseus extract has promising potential to be explored as anti-HSV-1 agent regardless of the mode of treatment.
Collapse
Affiliation(s)
- Noor Zarina Abd Wahab
- Department of Biomedicine, Faculty of Health Sciences, Universiti Sultan Zainal Abidin, Terengganu, Malaysia
| | - Aziah Azizul
- Department of Biomedicine, Faculty of Health Sciences, Universiti Sultan Zainal Abidin, Terengganu, Malaysia
| | - Nazlina Ibrahim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan, Bangi, Malaysia
| |
Collapse
|
36
|
Chin SY, Kadir K, Ibrahim N, Rahmat K. Correlation and accuracy of contrast-enhanced computed tomography in assessing depth of invasion of oral tongue carcinoma. Int J Oral Maxillofac Surg 2020; 50:718-724. [PMID: 33162298 DOI: 10.1016/j.ijom.2020.09.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/03/2020] [Accepted: 09/30/2020] [Indexed: 10/23/2022]
Abstract
The aim of this study was to evaluate the correlation and accuracy of depth of invasion (DOI) measurement from preoperative contrast-enhanced computed tomography (CECT) scans in comparison to histopathological examination (HPE) in oral tongue squamous cell carcinoma (OTSCC). Preoperative CT scans of 18 OTSCC patients were reviewed retrospectively by a single observer to measure the DOI on axial and coronal sections; these were then compared to the HPE report. Mean DOI was compared between CECT and HPE using repeated measures ANOVA. The strength of correlation of CT-derived tumour depth was determined using the intra-class correlation coefficient (ICC) followed by assessment of accuracy by Bland-Altman plot. In general, the measurement of DOI was smaller on CECT, with a mean difference of 0.743mm on axial CT and 1.106mm on coronal CT. Regarding the correlation between CECT and HPE tumour depths, ICC was 0.956 for axial CT and 0.965 for coronal CT. Bland-Altman analysis showed that DOI from CECT and histopathological depth were in agreement with each other. In conclusion, there was excellent correlation and accurate measurement of DOI from CECT.
Collapse
Affiliation(s)
- S Y Chin
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - K Kadir
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
| | - N Ibrahim
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - K Rahmat
- Department of Biomedical Imaging, University Malaya Research Imaging Centre, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| |
Collapse
|
37
|
An R, Wang Y, Gao C, Raghavendra A, Amaya D, Ibrahim N, Li J. PO-0865: Survival outcomes and prognosis in patients with triple-negative breast cancer and brain metastases. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00882-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
38
|
Zarina Abd N, Ibrahim N. In vitro study, Antiviral Activity of Styrylpyrone Derivative Against Dengue Virus Type 2. Asian J of Plant Sciences 2020; 19:438-442. [DOI: 10.3923/ajps.2020.438.442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
39
|
Jessop ZM, Dobbs TD, Ali SR, Combellack E, Clancy R, Ibrahim N, Jovic TH, Kaur AJ, Nijran A, O'Neill TB, Whitaker IS. Personal protective equipment for surgeons during COVID-19 pandemic: systematic review of availability, usage and rationing. Br J Surg 2020; 107:1262-1280. [PMID: 32395837 PMCID: PMC7273092 DOI: 10.1002/bjs.11750] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Surgeons need guidance regarding appropriate personal protective equipment (PPE) during the COVID-19 pandemic based on scientific evidence rather than availability. The aim of this article is to inform surgeons of appropriate PPE requirements, and to discuss usage, availability, rationing and future solutions. METHODS A systematic review was undertaken in accordance with PRISMA guidelines using MEDLINE, Embase and WHO COVID-19 databases. Newspaper and internet article sources were identified using Nexis. The search was complemented by bibliographic secondary linkage. The findings were analysed alongside guidelines from the WHO, Public Health England, the Royal College of Surgeons and specialty associations. RESULTS Of a total 1329 articles identified, 95 studies met the inclusion criteria. Recommendations made by the WHO regarding the use of PPE in the COVID-19 pandemic have evolved alongside emerging evidence. Medical resources including PPE have been rapidly overwhelmed. There has been a global effort to overcome this by combining the most effective use of existing PPE with innovative strategies to produce more. Practical advice on all aspects of PPE is detailed in this systematic review. CONCLUSION Although there is a need to balance limited supplies with staff and patient safety, this should not leave surgeons treating patients with inadequate PPE.
Collapse
Affiliation(s)
- Z M Jessop
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - T D Dobbs
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - S R Ali
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - E Combellack
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - R Clancy
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - N Ibrahim
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - T H Jovic
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - A J Kaur
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - A Nijran
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - T B O'Neill
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - I S Whitaker
- Reconstructive Surgery and Regenerative Medicine Research Group, Swansea University Medical School, Institute of Life Science, University of Swansea, Swansea, UK
- Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| |
Collapse
|
40
|
Mydlova L, Taboukhat S, Waszkowska K, Ibrahim N, Migalska-Zalas A, Sahraoui B, Frère P, Makowska-Janusik M. Selected molecules based on (-1-cyanovinyl)benzonitrile as new materials for NLO applications — Experimental and computational studies. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113622] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
41
|
Eggermont A, Blank C, Mandala' M, Long G, Atkinson V, Dalle S, Haydon A, Meshcheryakov A, Khattak A, Carlino M, Sandhu S, Sarda SP, Ascierto P, van Akkooi A, Krepler C, Ibrahim N, Marreaud S, Kicinski M, Suciu S, Robert C. LBA46 Pembrolizumab versus placebo after complete resection of high-risk stage III melanoma: Final results regarding distant metastasis-free survival from the EORTC 1325-MG/Keynote 054 double-blinded phase III trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
42
|
Pong LY, Rabu A, Ibrahim N. The critical region for viral RNA encapsidation in leader promoter of Nipah virus. Mol Genet Genomics 2020; 295:1501-1516. [PMID: 32767127 DOI: 10.1007/s00438-020-01716-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 07/25/2020] [Indexed: 01/19/2023]
Abstract
Encapsidation by nucleocapsid (N) protein is crucial for viral RNA to serve as a functional template for virus replication. However, the potential region that is vital for RNA encapsidation of Nipah virus (NiV) is still unknown. Thus, this study was aimed to identify these regions using a NiV minireplicon system. A series of broad range internal deletion mutations was generated in the 5' non-translated region (NTR) of the N gene mRNA region of NiV leader promoter via site-directed overlapping PCR-mediated mutagenesis. The mutation effects on synthesis and encapsidation of antigenome RNA, transcription, and RNA binding affinity of N protein were evaluated. The deletions of nucleotides 73-108, 79-108, and 85-108 from NiV leader promoter inhibited the encapsidation of antigenome RNA, while the deletion of nucleotides 103-108 suppressed the synthesis and encapsidation of antigenome RNA, implying that these regions are required for genome replication. Surprisingly, none of the mutations had detrimental effect on viral transcription. Using isothermal titration calorimetry, the binding of NiV N protein to genome or antigenome RNA transcript lacking of nucleotides 73-108 was found to be suppressed. Additionally, in silico analysis on secondary structure of genome RNA further supported the plausible cause of inefficient encapsidation of antigenome RNA by the loss of encapsidation signal in genome template. In conclusion, this study suggests that the nucleotides 73-90 within 5' NTR of the N gene mRNA region in NiV leader promoter contain cis-acting RNA element that is important for efficient encapsidation of antigenome RNA.
Collapse
Affiliation(s)
- Lian Yih Pong
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor Darul Ehsan, Malaysia.,Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Amir Rabu
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor Darul Ehsan, Malaysia
| | - Nazlina Ibrahim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor Darul Ehsan, Malaysia.
| |
Collapse
|
43
|
Abuhadra N, Sun R, Litton J, Rauch G, Thompson A, Lim B, Adrada B, Mittendorf E, Damodaran S, Pitpitan R, Arun B, White J, Ravenberg E, Santiago L, Sahin A, Murthy R, Ueno N, Ibrahim N, Moulder S, Huo L. 98O The immunomodulatory (IM) signature enhances prediction of pathologic complete response (pCR) to neoadjuvant therapy (NAT) in triple negative breast cancers (TNBC) with moderate stromal tumour infiltrating lymphocytes (sTIL). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
44
|
Waldman G, Gift T, Turvey K, Ho J, Shah R, Thomas S, Carlson W, Ton V, Ibrahim N, Rogers C, Nayor M, Spahillari A, Coglianese E, D'Alessandro D, Lewis G. Optimal Dosing of Enoxaparin to Achieve Therapeutic Anticoagulation in Heart Transplant Recipients. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
45
|
Ibrahim N, Roslee A, Azlan M, Abu-Bakar N. Sub-lethal concentrations of artemisinin alter pH of the digestive vacuole of the malaria parasite, Plasmodium falciparum. Trop Biomed 2020; 37:1-14. [PMID: 33612713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An appropriate pH maintenance within a membrane-enclosed organelle is vital for the occurrence of biological processes. Artemisinin (ART), a potent antimalarial drug has been reported to target the digestive vacuole (DV) of Plasmodium falciparum, which might alter the pH of the organelle, thereby impairing the hemoglobin degradation and subsequent heme detoxification. Hence, a flow cytometry-based technique using fluorescein isothiocyanate-dextran (FITC-dextran) as a ratiometric pH probe was employed to measure the pH of the DV of the malaria parasite treated with ART. Based on the pH calibration curve generated, the steady-state pH of the acidic DV of the non-treated parasites was 5.42 ± 0.11, indicating that FITC-dextran is suitable for detection of physiological pH of the organelle. The alteration of the DV pH occurred when the parasites were treated with ART even at the sub-lethal concentrations (15 and 30 nM) used. The similar effect was shown by the parasites treated with a standard proton pump inhibitor, concanamycin A. This suggests that ART might have altered the DV pH at lower levels than the level needed to kill the parasite. This study has important implications in designing new ART treatment strategies and in generating new endoperoxide-based antimalarial drugs pertaining to the interruption of the pH regulation of the malaria parasite's DV.
Collapse
Affiliation(s)
- N Ibrahim
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - A Roslee
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - M Azlan
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - N Abu-Bakar
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| |
Collapse
|
46
|
Zarina Abd Wahab N, Ibrahim N. Efficacy of <i>Catharanthus Roseus</i> Extract Against Dengue Virus Type 2 Infection in Vitro. Indian Journal of Public Health Research & Development 2020; 11:1320. [DOI: 10.37506/v11/i1/2020/ijphrd/194026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
47
|
Parker SG, Halligan S, Liang MK, Muysoms FE, Adrales GL, Boutall A, de Beaux AC, Dietz UA, Divino CM, Hawn MT, Heniford TB, Hong JP, Ibrahim N, Itani KMF, Jorgensen LN, Montgomery A, Morales-Conde S, Renard Y, Sanders DL, Smart NJ, Torkington JJ, Windsor ACJ. International classification of abdominal wall planes (ICAP) to describe mesh insertion for ventral hernia repair. Br J Surg 2019; 107:209-217. [PMID: 31875954 DOI: 10.1002/bjs.11400] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/25/2019] [Accepted: 09/18/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND Nomenclature for mesh insertion during ventral hernia repair is inconsistent and confusing. Several terms, including 'inlay', 'sublay' and 'underlay', can refer to the same anatomical planes in the indexed literature. This frustrates comparisons of surgical practice and may invalidate meta-analyses comparing surgical outcomes. The aim of this study was to establish an international classification of abdominal wall planes. METHODS A Delphi study was conducted involving 20 internationally recognized abdominal wall surgeons. Different terms describing anterior abdominal wall planes were identified via literature review and expert consensus. The initial list comprised 59 possible terms. Panellists completed a questionnaire that suggested a list of options for individual abdominal wall planes. Consensus on a term was predefined as occurring if selected by at least 80 per cent of panellists. Terms scoring less than 20 per cent were removed. RESULTS Voting started August 2018 and was completed by January 2019. In round 1, 43 terms (73 per cent) were selected by less than 20 per cent of panellists and 37 new terms were suggested, leaving 53 terms for round 2. Four planes reached consensus in round 2, with the terms 'onlay', 'inlay', 'preperitoneal' and 'intraperitoneal'. Thirty-five terms (66 per cent) were selected by less than 20 per cent of panellists and were removed. After round 3, consensus was achieved for 'anterectus', 'interoblique', 'retro-oblique' and 'retromuscular'. Default consensus was achieved for the 'retrorectus' and 'transversalis fascial' planes. CONCLUSION Consensus concerning abdominal wall planes was agreed by 20 internationally recognized surgeons. Adoption should improve communication and comparison among surgeons and research studies.
Collapse
Affiliation(s)
- S G Parker
- Abdominal Wall Unit, University College London Hospital, London, UK
| | - S Halligan
- UCL Centre for Medical Imaging, London, UK
| | - M K Liang
- Department of Surgery, McGovern Medical Center, University of Texas Health Science Center, Houston, Texas, USA
| | - F E Muysoms
- Department of Surgery, Maria Middelares Hospital, Ghent, Belgium
| | - G L Adrales
- Division of Minimally Invasive Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - A Boutall
- Colorectal Unit, Groote Schuur Hospital, Cape Town, South Africa
| | - A C de Beaux
- Department of Surgery, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - U A Dietz
- Department of Visceral, Vascular and Thoracic Surgery, Kantonal Hospital of Olten, Olten, Switzerland
| | - C M Divino
- Department of General Surgery, Department of Surgery, Mount Sinai School of Medicine, New York, USA
| | - M T Hawn
- Department of Surgery, Stanford University Medical Center, Palo Alto, California, USA
| | - T B Heniford
- Division of Gastrointestinal and Minimally Invasive Surgery, Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA
| | - J P Hong
- Department of Plastic Surgery, Asan Medical Centre, University of Ulsan, Seoul, South Korea
| | - N Ibrahim
- Department of General Surgery, Macquarie University Hospital, Macquarie University, Sydney, New South Wales, Australia
| | - K M F Itani
- Department of General Surgery, Veterans Affairs Boston Health Care System, Boston and Harvard Universities, West Roxbury, Massachusetts, USA
| | - L N Jorgensen
- Digestive Disease Centre, Bispebjerg University Hospital, Copenhagen, Denmark
| | - A Montgomery
- Department of Surgery, Skåne University Hospital Malmö, Malmö, Sweden
| | - S Morales-Conde
- Unit of Innovation in Minimally Invasive Surgery, Department of General and Digestive Surgery, University Hospital 'Virgen del Rocio', Seville, Spain
| | - Y Renard
- Department of General, Digestive and Endocrine Surgery, Robert-Debré University Hospital, University of Reims Champagne-Ardenne, Reims Cedex, France
| | - D L Sanders
- Department of General and Upper Gastrointestinal Surgery, North Devon District Hospital, Barnstaple, UK
| | - N J Smart
- Exeter Surgical Health Services Research Unit, Royal Devon and Exeter Hospital, Exeter, UK
| | - J J Torkington
- Department of Colorectal Surgery, University Hospital of Wales, Cardiff, UK
| | - A C J Windsor
- Abdominal Wall Unit, University College London Hospital, London, UK
| |
Collapse
|
48
|
Rodriguez-Acevedo OI, Elstner K, Jacombs A, Martins RT, Craft C, Robinson S, Cosman P, Mikami DJ, Read J, Ibrahim N. The macquarie system for comprehensive management of complex ventral hernia. Hernia 2019; 24:509-525. [DOI: 10.1007/s10029-019-02092-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 11/17/2019] [Indexed: 12/18/2022]
|
49
|
Boutros C, Chaput N, Lanoy E, Larive A, Mateus C, Routier E, Roy S, Sun R, Lancia A, Tao Y, Ibrahim N, Khoury-Abboud R, Massard C, Bahleda R, Schwob D, Caramella C, Cassard L, Soria JC, Robert C, Deutsch E. Ancillary evaluation of systemic immune antitumour response (SIAR) and tumour growth rate (TGR) of patients (pts) with metastatic melanoma (MM) treated with radiotherapy (RT) combined with ipilimumab (ipi) in the phase I study Mel-Ipi-Rx. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz255.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
50
|
Ibrahim N, Chen-Tournoux A, Christenson RH, Gaggin HK, Hollander JE, Levy PD, Mang A, Masson S, Nagurney JT, Nowak R, Pang PS, Peacock WF, Rolny V, Walters EL, Januzzi JL. P5005Diagnostic and prognostic utilities of insulin-like growth factor-binding protein-7 in patients presenting to the emergency department with dyspnea: results from the ICON-RELOADED study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Increased activity of insulin-like growth factor–binding protein-7 (IGFBP7) is associated with cellular senescence, tissue aging, and obesity. Prior studies in chronic heart failure (HF) have linked IGFBP7 to impaired myocardial relaxation. The role of IGFBP7 measurement in acute HF remains unclear.
Purpose
To examine whether concentrations of IGFBP7 in patients presenting with dyspnea to the emergency department (ED) will aid in the diagnosis and prognosis of acute HF beyond N-terminal pro- B type natriuretic peptide (NT-proBNP).
Methods
The ICON-RELOADED (International Collaborative of NT-proBNP- Re-evaluation of Acute Diagnostic Cut-Offs in the Emergency Department) study was a prospective, multicenter clinical trial conducted at 19 sites in North America that enrolled subjects ≥22 years of age presenting to ED with complaints of dyspnea. Subjects were blindly adjudicated for the diagnosis of acute HF. A blood sample was taken at enrollment. Six-month prognosis for death/repeat hospitalization was obtained. IGFBP7 was measured using a pre-clinical research use only assay.
Results
Among 1449 patients (n=274 with acute HF), those with IGFBP7 concentrations in the highest quartile (>123.7 ng/mL) were older, more likely to be male and to have a history of hypertension and HF (all p<0.001). They also had lower estimated glomerular filtration rate (eGFR) and the lowest left ventricular ejection fraction (41% ± 21%) prior to study enrollment (all p<0.001). Independent predictors of IGFBP7 included age, male sex, history of diabetes, history of HF, and eGFR (all p<0.001). Median concentrations of NT-proBNP (2844 vs. 99 ng/mL) and IGFBP7 (146.1 vs. 86.1 ng/mL) were significantly higher in those with acute HF (both p<0.001); addition of IGFBP7 to NT-proBNP concentrations improved discrimination, increasing the area under the receiver operating curve for diagnosis of acute HF (from 0.91 to 0.94; p<0.001) (Figure 1). Addition of IGFBP7 to a complete model of independent predictors of acute HF (including NT-proBNP) improved model calibration; IGFBP7 also significantly re-classified acute HF diagnosis beyond NT-proBNP alone (net reclassification improvement +0.25; p<0.001). Higher log2-IGFBP7 concentrations predicted death/rehospitalization at 6 months (hazard ratio 1.74 per log2-standard deviation, 95% confidence interval 1.26–2.40, p=0.001). In Kaplan-Meier analyses, supramedian concentrations of IGFBP7 were associated with shorter event-free survival (log-rank p<0.001).
ROC curve for diagnosis of acute HF
Conclusions
Among patients with acute dyspnea, concentrations of IGFBP7 add to NT-proBNP for diagnosis of acute HF and provide added prognostic utility for short-term risk.
Acknowledgement/Funding
Funding for this study was provided by Roche Diagnostics (Risch-Rotkreuz, Switzerland).
Collapse
Affiliation(s)
- N Ibrahim
- Massachusetts General Hospital, Cardiology, Boston, United States of America
| | | | - R H Christenson
- University of Maryland, Pathology, Baltimore, United States of America
| | - H K Gaggin
- Massachusetts General Hospital, Cardiology, Boston, United States of America
| | - J E Hollander
- Thomas Jefferson University, Emergency Medicine, Philadelphia, United States of America
| | - P D Levy
- Wayne State University, Emergency Medicine, Detroit, United States of America
| | - A Mang
- Roche Diagnostics, Risch-Rotkreuz, Switzerland
| | - S Masson
- Roche Diagnostics, Risch-Rotkreuz, Switzerland
| | - J T Nagurney
- Massachusetts General Hospital, Emergency Medicine, Boston, United States of America
| | - R Nowak
- University of Michigan, Emergency Medicine, Ann Arbor, United States of America
| | - P S Pang
- Indiana University School of Medicine, Emergency Medicine, Cardiology, Indianapolis, United States of America
| | - W F Peacock
- Baylor College of Medicine, Emergency Medicine, Houston, United States of America
| | - V Rolny
- Roche Diagnostics, Risch-Rotkreuz, Switzerland
| | - E L Walters
- Loma Linda University Medical Center, Emergency Medicine, Loma Linda, United States of America
| | - J L Januzzi
- Massachusetts General Hospital, Cardiology, Boston, United States of America
| |
Collapse
|