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Atif M, Husnain HU, Rehman AU, Younas U, Rafique T, Khalid W, Ali Z, Nadeem M. Enhancement in the dielectric and magnetic properties of Ni 2+-Cu 2+ co-doped BaFe 11Cu 1-xNi xO 19 hexaferrites (0.0 ≤ x ≤ 1.0). RSC Adv 2024; 14:6883-6895. [PMID: 38410360 PMCID: PMC10895416 DOI: 10.1039/d3ra06684c] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 02/13/2024] [Indexed: 02/28/2024] Open
Abstract
Herein, Ni2+-Cu2+ co-doped barium hexaferrites (BaFe11Cu1-xNixO19, 0.0 ≤ x≤ 1.0 with an interval of 0.25) were successfully synthesized using a co-precipitation method. The formation of a magnetoplumbite structure with the P63/mmc space group was confirmed by Rietveld refinement of the obtained X-ray diffraction patterns. Microstructural investigations revealed grains in the shape of hexagonal plates, while co-doping resulted in a variation in the grain sizes of the prepared samples. X-ray photoelectron spectroscopy was performed to determine the valence state of iron in the prepared hexaferrites. Impedance spectroscopy analysis revealed that dielectric permittivity initially decreased with an increase in the co-dopant content up to x = 0.5 and then increased by two orders of magnitude for x = 1.0. Alternatively, resistive properties showed microstructural resistance values in the range 105-108 Ω, with the highest value obtained for the sample with x = 0.5. Furthermore, magnetic measurements indicated that all the prepared samples exhibited ferrimagnetic behaviour. Saturation magnetization and magnetic anisotropy values were found to be the highest for the sample with x = 1.0, which also had the lowest coercivity among the prepared samples. Herein, the observed variations in the obtained results can be explained by the variations in grain sizes and the Fe2+/Fe3+ ratio associated with the preferential occupation of co-dopants at octahedral sites. Based on our findings, the BaFe11Ni1O19 (x = 1.0) composition appears to be the most promising choice as a microwave absorption material among the prepared samples owing to the coexistence of high dielectric permittivity (>103 at 107 Hz) and saturation magnetization (73 emu g-1).
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Affiliation(s)
- M Atif
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - H Ul Husnain
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - Atta Ur Rehman
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
- Department of Physics, The University of Hong Kong Pokfulam Hong Kong
| | - U Younas
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - T Rafique
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - W Khalid
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - Z Ali
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - M Nadeem
- Polymer Composite Group, Physics Division, Directorate of Science, PINSTECH P.O. Nilore Islamabad Pakistan
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Quach D, Lyons NB, Nguyen K, Olavarria OA, Bernardi K, Neela N, Dhanani NH, Jackson A, Ali Z, Liang MK. Natural history of occult hernias in adults at a safety-net hospital. Hernia 2023; 27:1467-1472. [PMID: 36795186 DOI: 10.1007/s10029-023-02754-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/03/2023] [Indexed: 02/17/2023]
Abstract
PURPOSE Occult hernias, hernias seen on radiologic imaging but not felt on physical exam, are common. Despite their high prevalence, little is known about the natural history of this finding. Our aim was to determine and report on the natural history of patients with occult hernias including the impact on abdominal wall quality of life (AW-QOL), need for surgery, and risk of acute incarceration/strangulation. METHODS This was a prospective cohort study of patients who underwent a computed tomography (CT) abdomen/pelvis scan from 2016 to 2018. Primary outcome was change in AW-QOL using the modified Activities Assessment Scale (mAAS), a hernia-specific, validated survey (1 = poor, 100 = perfect). Secondary outcomes included elective and emergent hernia repairs. RESULTS A total of 131 (65.8%) patients with occult hernias completed follow-up with a median (IQR) of 15.4 (22.5) months. Nearly half of these patients (42.8%) experienced a decrease in their AW-QOL, 26.0% were unchanged, and 31.3% reported improvement. One-fourth of patients (27.5%) underwent abdominal surgery during the study period: 9.9% were abdominal procedures without hernia repair, 16.0% involved elective hernia repairs, and 1.5% were emergent hernia repairs. AW-QOL improved for patients who underwent hernia repair (+ 11.2 ± 39.7, p = 0.043) while those who did not undergo hernia repair experienced no change in AW-QOL (- 3.0 ± 35.1). CONCLUSION When untreated, patients with occult hernias on average experience no change in their AW-QOL. However, many patients experience improvement in AW-QOL after hernia repair. Additionally, occult hernias have a small but real risk of incarceration requiring emergent repair. Further research is needed to develop tailored treatment strategies.
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Affiliation(s)
- D Quach
- Department of Surgery, HCA Healthcare Kingwood, University of Houston, Kingwood, TX, USA
| | - N B Lyons
- Department of Surgery, University of Miami Miller School of Medicine, 1800 NW 10th Ave, Miami, FL, 33136, USA.
| | - K Nguyen
- Department of Surgery, HCA Healthcare Kingwood, University of Houston, Kingwood, TX, USA
| | - O A Olavarria
- Department of Surgery, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, USA
| | - K Bernardi
- Department of Surgery, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, USA
| | - N Neela
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - N H Dhanani
- Department of Surgery, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, USA
| | - A Jackson
- Department of Surgery, University of Miami Miller School of Medicine, 1800 NW 10th Ave, Miami, FL, 33136, USA
| | - Z Ali
- Department of Surgery, HCA Healthcare Kingwood, University of Houston, Kingwood, TX, USA
| | - M K Liang
- Department of Surgery, HCA Healthcare Kingwood, University of Houston, Kingwood, TX, USA
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Cartmell KB, Doherty EA, Gikaara N, Ali Z, Qanungo S, Melikam ES, Powell RA. Kenyan palliative care providers' and leaders' perceptions of palliative care research needs and support to facilitate rigorous research. BMC Palliat Care 2023; 22:135. [PMID: 37697339 PMCID: PMC10496291 DOI: 10.1186/s12904-023-01199-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 06/20/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Palliative care (PC) can reduce symptom distress and improve quality of life for patients and their families experiencing life-threatening illness. While the need for PC in Kenya is high, PC service delivery and research is limited. Qualitative research is needed to explore potential areas for PC research and support needed to enable that research. This insight is critical for informing a national PC research agenda and mobilizing limited resources for conducting rigorous PC research in Kenya. OBJECTIVES To explore perceptions of priority areas for PC research and support needed to facilitate rigorous research from the perspective of Kenyan PC providers and leaders. METHODS Focus groups (FGs) were conducted in November and December of 2018 using a semi-structured interview guide. FGs were audio-recorded, transcribed, and analyzed using a thematic content analysis approach. RESULTS Three FGs were conducted (n = 22 participants). Ten themes related to PC research emerged, including research on: 1) beliefs about death, disease, and treatment to inform PC; 2) awareness about PC, 3) integration of PC within the health system; 4) understanding caregiver experiences and needs; 5) community health volunteers (CHVs) and volunteer programs; 6) evaluation of costs and benefits of PC; 7) treatment approaches, including complementary and alternative medicine (CAM) and advanced diagnostics at end of life; 8) other suggestions for research, 9) populations in need of PC research; and 10) resources for enabling research. CONCLUSIONS Kenyan PC providers and leaders identified key areas requiring increased scientific inquiry and critical resources needed to enable this research. These findings can help to focus future PC research in Kenya and encourage funding agencies to prioritize the issues identified.
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Affiliation(s)
- K B Cartmell
- Department of Public Health Sciences, College of Behavioral, Social and Health Sciences, Clemson University, Clemson, SC, USA.
| | - E A Doherty
- Department of Public Health Sciences, College of Behavioral, Social and Health Sciences, Clemson University, Clemson, SC, USA
| | - N Gikaara
- Department of Medicine, Aga Khan University Hospital, Nairobi, Kenya
| | - Z Ali
- Kenyan Hospice and Palliative Care Association, Nairobi, Kenya
| | - S Qanungo
- College of Nursing, Medical University of South Carolina, Charleston, SC, USA
| | - E S Melikam
- Department of Public Health Sciences, College of Behavioral, Social and Health Sciences, Clemson University, Clemson, SC, USA
| | - R A Powell
- Department of Primary Care and Public Health, Faculty of Medicine, Imperial College London, London, England
- Ethnicity and Health Unit, NIHR Applied Research Collaboration Northwest London, London, England
- MWAPO Health Development Group, Nairobi, Kenya
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Hsu LY, Ali Z, Bagheri H, Huda F, Redd BA, Jones EC. Comparison of CT and Dixon MR Abdominal Adipose Tissue Quantification Using a Unified Computer-Assisted Software Framework. Tomography 2023; 9:1041-1051. [PMID: 37218945 DOI: 10.3390/tomography9030085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/24/2023] Open
Abstract
PURPOSE Reliable and objective measures of abdominal fat distribution across imaging modalities are essential for various clinical and research scenarios, such as assessing cardiometabolic disease risk due to obesity. We aimed to compare quantitative measures of subcutaneous (SAT) and visceral (VAT) adipose tissues in the abdomen between computed tomography (CT) and Dixon-based magnetic resonance (MR) images using a unified computer-assisted software framework. MATERIALS AND METHODS This study included 21 subjects who underwent abdominal CT and Dixon MR imaging on the same day. For each subject, two matched axial CT and fat-only MR images at the L2-L3 and the L4-L5 intervertebral levels were selected for fat quantification. For each image, an outer and an inner abdominal wall regions as well as SAT and VAT pixel masks were automatically generated by our software. The computer-generated results were then inspected and corrected by an expert reader. RESULTS There were excellent agreements for both abdominal wall segmentation and adipose tissue quantification between matched CT and MR images. Pearson coefficients were 0.97 for both outer and inner region segmentation, 0.99 for SAT, and 0.97 for VAT quantification. Bland-Altman analyses indicated minimum biases in all comparisons. CONCLUSION We showed that abdominal adipose tissue can be reliably quantified from both CT and Dixon MR images using a unified computer-assisted software framework. This flexible framework has a simple-to-use workflow to measure SAT and VAT from both modalities to support various clinical research applications.
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Affiliation(s)
- Li-Yueh Hsu
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10, Room 1C370, 10 Center Drive, Bethesda, MA 20892, USA
| | - Zara Ali
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10, Room 1C370, 10 Center Drive, Bethesda, MA 20892, USA
| | - Hadi Bagheri
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10, Room 1C370, 10 Center Drive, Bethesda, MA 20892, USA
| | - Fahimul Huda
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10, Room 1C370, 10 Center Drive, Bethesda, MA 20892, USA
| | - Bernadette A Redd
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10, Room 1C370, 10 Center Drive, Bethesda, MA 20892, USA
| | - Elizabeth C Jones
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10, Room 1C370, 10 Center Drive, Bethesda, MA 20892, USA
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Younas U, Atif M, Anjum A, Nadeem M, Ali T, Shaheen R, Khalid W, Ali Z. Fabrication of La 3+ doped Ba 1-x La x TiO 3 ceramics with improved dielectric and ferroelectric properties using a composite-hydroxide-mediated method. RSC Adv 2023; 13:5293-5306. [PMID: 36777949 PMCID: PMC9912143 DOI: 10.1039/d2ra06640h] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 02/05/2023] [Indexed: 02/12/2023] Open
Abstract
Lanthanum (La3+) doped Ba1-x La x TiO3 (x = 0.0, 0.0025, 0.005, 0.0075) ceramics were synthesized by the composite-hydroxide-mediated method. Rietveld refinement of the XRD patterns confirmed the formation of a perovskite crystal structure that transforms from tetragonal to pseudo-cubic with La3+ doping content (x). Scanning electron microscopy displayed a dense and homogeneous microstructure with reduced grain size on La3+ doping. The frequency and temperature-dependent dielectric measurements showed an improvement in the dielectric permittivity, a decrease in the ferroelectric-paraelectric transition temperature, and an increase in the dielectric diffusivity with increasing La3+ doping content. Complex impedance analysis indicated the semiconducting behavior with a positive temperature coefficient of resistance effect, which could be explained in terms of a charge compensation mechanism in the donor doped BaTiO3. The ferroelectric hysteresis loops revealed that these ceramics are ferroelectric in nature, while an improvement in the energy storage density and energy storage efficiency was observed for the doped samples due to reduced grain size on La3+ doping. Here, the sample with x = 0.005 has a high dielectric permittivity, a low dielectric tangent loss, and the highest energy storage efficiency. This makes this composition interesting for energy storage applications.
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Affiliation(s)
- U. Younas
- Functional Materials Lab, Department of Physics, Air UniversityPAF Complex E-9IslamabadPakistan
| | - M. Atif
- Functional Materials Lab, Department of Physics, Air UniversityPAF Complex E-9IslamabadPakistan
| | - A. Anjum
- Functional Materials Lab, Department of Physics, Air UniversityPAF Complex E-9IslamabadPakistan
| | - M. Nadeem
- Polymer Composite Group, Directorate of SciencePINSTECHIslamabadPakistan
| | - T. Ali
- Physics Division, Directorate of SciencePINSTECHIslamabadPakistan
| | - R. Shaheen
- Physics Division, Directorate of SciencePINSTECHIslamabadPakistan
| | - W. Khalid
- Functional Materials Lab, Department of Physics, Air UniversityPAF Complex E-9IslamabadPakistan
| | - Z. Ali
- Functional Materials Lab, Department of Physics, Air UniversityPAF Complex E-9IslamabadPakistan
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Ali Z, Egeberg A, Thyssen JP, Ulrik CS, Thomsen SF. Adults with concomitant atopic dermatitis and asthma have more frequent urgent health care utilization and less frequent scheduled follow-up visits than adults with atopic dermatitis or asthma only: A nationwide cohort study. J Eur Acad Dermatol Venereol 2022; 36:2406-2413. [PMID: 35796157 DOI: 10.1111/jdv.18415] [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: 12/21/2021] [Accepted: 06/15/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) and asthma often co-occur in the same patient, and health care utilization is related to disease severity of these diseases. OBJECTIVE To investigate differences in healthcare utilization in adults with concomitant AD and asthma compared to patients with asthma or AD only. METHODS All Danish adults with a hospital-diagnosis of AD, asthma or concomitant AD and asthma recorded in national registries were included. Health care utilization data were obtained in 3-month intervals from two year prior to index date (the date of the first hospital diagnosis), and to five years after. RESULTS A total of 12,409 patients with AD were included (11,590 with AD only and 819 with concomitant AD and asthma), and 65,539 with asthma only. Adults with concomitant AD and asthma had higher risk of hospitalization for AD (OR 1.38, 95% CI (1.15-1.67), p=0.001) and asthma (OR 1.16, 95% CI (1.00-1.35), p=0.047) compared to patients with only AD and asthma, respectively. These patients also had fewer visits in outpatient clinics for AD (OR 0.10, 95% CI (0.08-0.12), p<0.001) and asthma (OR 0.34, 95% CI (0.29-0.39), P<0.001) compared to patients with only AD or asthma. Outpatient clinic visits for rhinitis were more frequent among patients with concomitant AD and asthma compared to patients with only AD or asthma. CONCLUSION Adults with concomitant AD and asthma had different patterns of healthcare utilization compared to adults with AD or asthma alone, suggesting that improvements in management and monitoring may reduce unscheduled health care visits, and lower healthcare costs.
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Affiliation(s)
- Z Ali
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - A Egeberg
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - J P Thyssen
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - C S Ulrik
- Department of Respiratory Medicine, Copenhagen University Hospital Hvidovre, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - S F Thomsen
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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Goldfarb J, Dominguez-Sulca D, Chowdhury E, Ali Z, Khalique O. 509 Cardiovascular Computed Tomography And FFRCTIn The United States Medicare Population From 2013-2020. J Cardiovasc Comput Tomogr 2022. [DOI: 10.1016/j.jcct.2022.06.120] [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: 11/30/2022]
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Ali Z, Vasavan T, Meeladah G, Eliza W, Getreu N, O’Neill H. P-738 Impact of limited reproductive health awareness on PCOS diagnosis timelines and the need for improved patient education. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.684] [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] Open
Abstract
Abstract
Study question
Does the lack of awareness of Polycystic ovary syndrome (PCOS) symptoms contribute to a delay in diagnosis?
Summary answer
Limited awareness regarding reproductive health symptoms can negatively impact help-seeking behaviour, delaying diagnostic timelines.
What is known already
PCOS is a common endocrine condition estimated to affect up to 20% of women worldwide. Frequently observed symptoms include oligomenorrhea or amenorrhea, clinical features of hyperandrogenism, metabolic dysfunction, infertility and poor mental health.
Despite its prevalence and the debilitating impact of symptoms on quality of life, it takes an average of two years and over three clinical consultations to diagnose. Delayed diagnosis may be influenced by a lack of standardised screening guidelines, poor understanding of how PCOS manifests in ethnic minorities and hesitancy from the general public to seek help for their reproductive health symptoms.
Study design, size, duration
A cross-sectional study investigating the barriers to diagnosis of PCOS.
Participants aged 18 or older with an existing or suspected diagnosis of PCOS were invited to complete an online survey across five days in January 2022.
The survey assessed general demographic information, the influence of symptoms on their daily life and their experiences with receiving a diagnosis.
Of the 200 responses, 143 responses were analysed and 99 were included in the results.
Participants/materials, setting, methods
Participants were aged between 18 - 45 and provided informed consent after reading a patient information leaflet detailing the background of the study.
75 (52.44%) participants were UK-based, while 68 (47.55%) were based abroad.
Ethical approval of all study-related documents was given by the Hertility Health Research Ethics Committee.
The online survey was presented on Typeform and disseminated via the social media platforms Instagram, Twitter and LinkedIn.
Descriptive statistics are presented.
Main results and the role of chance
Of the 143 participants, 99 (69.2%) reported a PCOS diagnosis. Anxiety (71.4%), irregular menstrual cycles (69.4%) and weight-related concerns (64.3%) were the most commonly reported symptoms.
Despite the majority reporting that their symptoms impacted daily life (80.8%), mental health (82.8%), and educational or work performance (70.7%), only 10.2% had sought medical help immediately while 75.5% waited for up to 2 years.
Not realising their symptoms required medical help (73.2%), lack of information regarding routes to care (18.3%) and stigma from family members (18.3%) were the most common reasons why medical help was not sought immediately.
Following clinical consultations, 54.7% of participants were not satisfied with the information provided to manage their diagnosis. Although mental health-related symptoms were most frequently reported (75.5%), only 4.8% reported that management strategies for mental health were referenced in their consultations.
Of the 93.2% of those looking for extra information online, only 52.3% used official websites such as the National Health Service (NHS) website. Many participants also chose to use social media sources such as Instagram and Tik Tok for information (52.3%) and support (59.3%).
Limitations, reasons for caution
Although there was a global uptake, the study needs to be carried out on a larger scale with an emphasis on minority ethnicities.
Recall bias could have also impacted findings as the participants were required to provide details on their entire diagnosis experience.
Wider implications of the findings
It is evident that limited awareness regarding reproductive health can delay the diagnosis of PCOS.
Due to unsatisfactory management by healthcare providers, patients heavily rely on unregulated channels such as social media to obtain reproductive health information, highlighting the need for better Sex and Fertility Education programs and improved accessibility.
Trial registration number
NA
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Affiliation(s)
- Z Ali
- Hertility Health Limited, Research and Development , London, United Kingdom
| | - T Vasavan
- Hertility Health Limited, Research and Development , London, United Kingdom
| | - G Meeladah
- Hertility Health Limited, Research and Development , London, United Kingdom
- University College London, EGA Institute for Women's Health , London, United Kingdom
| | - W Eliza
- Hertility Health Limited, Research and Development , London, United Kingdom
| | - N Getreu
- Hertility Health Limited, Research and Development , London, United Kingdom
- University College London, EGA Institute for Women's Health , London, United Kingdom
| | - H O’Neill
- Hertility Health Limited, Research and Development , London, United Kingdom
- University College London, EGA Institute for Women's Health , London, United Kingdom
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Rehman AU, Atif M, Younas M, Rafique T, Wahab H, Ul-Hamid A, Iqbal N, Ali Z, Khalid W, Nadeem M. Unusual semiconductor-metal-semiconductor transitions in magnetite Fe 3O 4 nanoparticles. RSC Adv 2022; 12:12344-12354. [PMID: 35480359 PMCID: PMC9036052 DOI: 10.1039/d2ra00530a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/19/2022] [Indexed: 01/14/2023] Open
Abstract
Magnetite (Fe3O4) nanoparticles were successfully prepared by a co-precipitation method. Rietveld refinement on the X-ray diffraction pattern confirmed the development of a single-phase cubic spinel structure with space group Fd3̄m. However, 57Fe Mössbauer spectroscopy suggested the presence of Fe3+ and Fe2.5+ (mixed Fe3+ and Fe2+) ions at the tetrahedral and octahedral sites of the inverse spinel structure, respectively. Impedance spectroscopy measurements showed a discontinues variation in the temperature dependence of the sample's resistive behavior, indicating the appearance of semiconductor–metal–semiconductor like transitions between the temperature range of 293 and 373 K. A similar dual transition was also observed from the dielectric and conductivity measurements around the same temperature regions. The observed unusual transition is explained in term of the competitive effects among the hopping of localized/delocalized and short-range/long-range charge carriers present in the sample. Moreover, the prepared sample exhibits colossal dielectric permittivity (∼106), reduced tangent loss (∼0.2) and moderate conductivity (>10−6 S cm−1) values, making Fe3O4 nanoparticles a potential candidate for electromagnetic absorbing materials. Herein, we report the existence of a novel semiconductor–metal–semiconductor type transition in Fe3O4 nanoparticles by employing impedance spectroscopy techniques.![]()
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Affiliation(s)
- Atta Ur Rehman
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - M Atif
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - M Younas
- Polymer Composite Group, Physics Division, Directorate of Science, PINSTECH P.O. Nilore Islamabad Pakistan
| | - T Rafique
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - H Wahab
- Polymer Composite Group, Physics Division, Directorate of Science, PINSTECH P.O. Nilore Islamabad Pakistan
| | - A Ul-Hamid
- Core Research Facilities, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
| | - N Iqbal
- US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), NUST H-12 Islamabad 44000 Pakistan
| | - Z Ali
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - W Khalid
- Functional Materials Lab, Department of Physics, Air University PAF Complex E-9 Islamabad Pakistan
| | - M Nadeem
- Polymer Composite Group, Physics Division, Directorate of Science, PINSTECH P.O. Nilore Islamabad Pakistan
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EMILIA E, Ali Z, Effendi I, Suhaimi N, Slamet S, Syahrir M, Indrajaya T, Saleh M, Kartika H, Fathurrachman A. POS-167 THE ASSOCIATION BETWEEN URINARY TISSUE INHIBITOR METALLOPROTEINASE 2*INSULIN-LIKE GROWTH FACTOR BINDING PROTEIN 7 AND HEMODIALYSIS IN ACUTE KIDNEY INJURY AT Dr. MOHAMMAD HOESIN HOSPITAL PALEMBANG. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.182] [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: 10/19/2022] Open
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KARTIKA H, Emilia E, Ali Z, Effendi I, Novadian N, Suprapti S, Fathurrachman A, Mulia D. POS-070 THE ASSOCIATION BETWEEN GLOMERULUS FILTRATION RATE AND URINARY TISSUE INHIBITOR METALLOPROTEINASE 2*INSULIN LIKE GROWTH FACTOR BINDING PROTEIN 7 IN ACUTE KIDNEY INJURY AT RSMH PALEMBANG. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.079] [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
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Strange J, Ali Z, Holland M, Gaillemin O. Improving and Sustaining the Quality of Discharge Summaries. Acute Med 2022; 21:139-145. [PMID: 36427212 DOI: 10.52964/amja.0913] [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] [Indexed: 06/16/2023]
Abstract
High quality discharge information communication has been linked to a reduction in the incidence of adverse events, decreasing the risk of prescription errors and lost follow up. In this paper we describe how our trust-wide quality improvement project, led by acute physicians, successfully improved discharge documentation. We demonstrate how we identified obstacles to continued success, and the interventions we implemented. We recommend how discharge summary quality can be optimised through training of junior doctors, recruitment of local champions, and use of novel methods to preserve engagement, such as gamification.
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Affiliation(s)
- J Strange
- BSc(Hons), MB ChB(Hons); ACCS CT1; Salford Care Organisation, Northern Care Alliance
| | - Z Ali
- BA (Hons) MB BChir; FY2; Salford Care Organisation, Northern Care Alliance, Stott Lane, Salford M6 8HD
| | - M Holland
- MB, BS, MEd, FRCP, FHEA; Associate TIRI Professor, Department of Clinical and Biomedical Sciences, Faculty of Health and Wellbeing, University of Bolton. ORCHID ID 0000-0001-8336-5336
| | - O Gaillemin
- MB ChB, PGDip, MRCP; Consultant Physician in Acute Medicine, Salford Care Organisation, Northern Care Alliance
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13
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Aljulayfi I, O'Toole S, Healy M, Sumaidaa S, Ali Z, Bartlett D, Austin R. The interplay of saliva, erosion and attrition on enamel and dentine. Saudi Dent J 2022; 34:232-236. [PMID: 35935719 PMCID: PMC9346941 DOI: 10.1016/j.sdentj.2022.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/07/2022] [Accepted: 01/25/2022] [Indexed: 11/17/2022] Open
Abstract
Purpose This investigation aimed to compare the protective role of saliva against erosion and attrition challenges. Method Polished enamel and dentine samples (n = 160) were prepared and randomly assigned to either the saliva or saliva-free group (n = 40 enamel and n = 40 dentine/group). Within each subgroup, they were allocated to four subgroups: negative control (deionized water exposure 10 min), erosion (0.3% citric acid 10 min), attrition (120 S of 300 g force), or combined erosion/attrition (0.3% citric acid 10 min then 120 S of 300 g force). Experimental cycles were repeated three times. Data analysis was performed using SPSS. Results The mean and standard deviation (SD) of step heights produced by the attrition and erosion/attrition groups in enamel in the saliva-free group were 5.6 µm (2.4) and 13.4 µm (2.8), respectively, while they were 2.4 µm (3.8) and 12.9 µm (3.5) in the saliva group, with no significant difference between the saliva and saliva-free groups. For dentine, the corresponding step heights were 25.2 µm (5.5) and 35.9 µm (7.9) for the saliva-free group, but 21.8 µm (5.3) and 27.3 µm (6.4) for the saliva group (p < 0.001). Conclusion There was a trend that saliva decreased wear, but this was only statistically significant for erosion/attrition dentine wear.
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Affiliation(s)
- I. Aljulayfi
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
- Prince Sattam bin Abdulaziz University, College of Dentistry, Alkharj, Saudi Arabia
- Corresponding author at: Prince Sattam bin Abdulaziz University, College of Dentistry, Alkharj, 16245, Saudi Arabia.
| | - S. O'Toole
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - M. Healy
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - S. Sumaidaa
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - Z. Ali
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - D. Bartlett
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
| | - R. Austin
- Centre for Clinical Oral and Translational Sciences, King’s College London, Guy’s Hospital, London SE1 9RT, United Kingdom
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14
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Ali Z, Egeberg A, Thyssen JP, Sørensen JA, Vestergaard C, Thomsen SF. No association between omalizumab use and risk of cancer: a nationwide registry-based cohort study. Br J Dermatol 2021; 186:746-748. [PMID: 34878656 DOI: 10.1111/bjd.20941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/18/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Z Ali
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - A Egeberg
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - J P Thyssen
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - J A Sørensen
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | - C Vestergaard
- The Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - S F Thomsen
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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15
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Rehan I, Gondal M, Aldakheel R, Rehan K, Sultana S, Almessiere M, Ali Z. Development of laser induced breakdown spectroscopy technique to study irrigation water quality impact on nutrients and toxic elements distribution in cultivated soil. Saudi J Biol Sci 2021; 28:6876-6883. [PMID: 34866988 PMCID: PMC8626308 DOI: 10.1016/j.sjbs.2021.07.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/22/2021] [Accepted: 07/24/2021] [Indexed: 11/18/2022] Open
Abstract
This study is focused mainly on impact of irrigation water quality in cultivated soil on distribution of essentials nutrients (Al, Mg, Ca, Fe, S, Si, Na, P, and K) and relatively toxic metals (As, Ba, Cr, Cu, Ti, Sn, Mn, Ni, and Zn) using an elegant Laser induced breakdown spectroscopy (LIBS) technique. A pulsed Nd:YAG laser operating at 1064 nm in conjunction with suitable detector was applied to record soil emission spectra. The abundance of these elements were evaluated via standard calibration curve Laser Induced Breakdown Spectroscopy (CC-LIBS) and calibration free Laser Induced Breakdown Spectroscopy (CF-LIBS) approaches. Quantitative analyses were accomplished under conjecture of local thermodynamic equilibrium (L.T.E) and optically thin plasma. The average electron temperatures were estimated by Boltzmann plot method for cultivated soil samples in 7800 to 9300 K range. The electron number density was ~ 1.11 × 1017 cm − 3 to 1.60 × 1017 cm − 3. Prior to application on soil samples, the experimental setup was optimized at the following parameters: pulsed energy = 60 mJpulse-1, sample to lens distance of 9.0 cm, and the gate delay of 3.5 μs. It is noteworthy that nutritional elements content of cultivated soils were found strongly dependent upon the irrigation water quality. The cultivated soil from industrial area was found rich of toxins while the cultivated land using tube well water contains toxins in least amount. Our LIBS findings were also validated by comparing its results with contents measured using a standard inductively coupled plasma optical emission spectroscopy (ICP-OES) method and both were found in excellent agreement. The present study could be highly beneficial for agricultural applications and for farmers to produce safe food products and higher crops yield.
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Affiliation(s)
- I. Rehan
- Department of Physics, Islamia College University, Peshawar 25120, Pakistan
| | - M.A. Gondal
- Physics Department, IRC-Hydrogen and Energy Storage, K.A.CARE Energy Research and Innovation Center, King Fahd University of Petroleum and Minerals, P.O. Box 5047, Dhahran 31261, Saudi Arabia
| | - R.K. Aldakheel
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia
| | - K. Rehan
- CAS Key Laboratory of Microscale Magnetic, University of Science and Technology of China, Hefei, Anhui, 230026, PR China
| | - S. Sultana
- Department of Chemistry, Islamia College University, Peshawar 25120, Pakistan
| | - M.A. Almessiere
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia
- Corresponding author at: Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 1982, Saudi Arabia.
| | - Z. Ali
- Nano science and catalysis division, National center for Physics, Islamabad Pakistan
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16
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Banerjee S, Leary A, Lheureux S, Stewart J, Attygalle A, Vroobel K, Gill S, Ali Z, Tai J, Toms C, Natrajan R, Lord C, Porta N, Bliss J. 815TiP ENGOT/GYN1/NCRI: ATR inhibitor in combination with olaparib in gynaecological cancers with ARID1A loss or no loss (ATARI). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1257] [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: 11/27/2022] Open
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17
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Matthews R, Ali Z. Comorbid mental health issues in patients with pemphigus vulgaris and pemphigus foliaceus. Clin Exp Dermatol 2021; 47:24-29. [PMID: 34459019 DOI: 10.1111/ced.14916] [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: 04/05/2021] [Revised: 08/02/2021] [Accepted: 08/26/2021] [Indexed: 10/20/2022]
Abstract
The term 'pemphigus' refers to chronic autoimmune skin disorders that cause blistering erosions on the skin and oral mucosa. The two major clinical forms are pemphigus vulgaris and pemphigus foliaceus. Although rare, they confer a stark symptomatic burden upon patients that significantly impacts daily life. Comorbid mental health issues are not routinely screened for in patients with pemphigus, and current UK guidance provides no formal provision for the identification and treatment of psychological issues. This review is the first of its kind, to our knowledge, to systematically examine the available evidence on mental health issues in pemphigus. Published work suggests that the incidence of anxiety and depression is much higher in patients with pemphigus compared with both the general population and with patients having other chronic skin disorders. Disease severity appears to be closely linked to mental health, with worsening of pemphigus associated with deteriorations in psychological wellbeing. Corticosteroids, which are associated with depression in chronic use, are the current first-line therapy for pemphigus and have been identified as a potential confounder and independent risk factor for mental health comorbidity in pemphigus. Current evidence is unclear whether a bidirectional relationship exists between mental health and pemphigus severity, and more thorough research is required to develop understanding of this issue. In conclusion, we have identified a high incidence of mental health comorbidity in pemphigus, and recommend routine screening of patients with pemphigus for mental health issues and signposting toward mental health services as an initial measure to address this.
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Affiliation(s)
- R Matthews
- Department of Post-Graduate Medical Education, Royal Blackburn Teaching Hospital, East Lancashire Hospital Trust, Blackburn, UK
| | - Z Ali
- Department of Post-Graduate Medical Education, Salford Royal Foundation Trust, Salford, Manchester, UK
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18
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Ali Z, Matthews R, Al-Janabi A, Warren RB. Bimekizumab: a dual IL-17A and IL-17F inhibitor for the treatment of psoriasis and psoriatic arthritis. Expert Rev Clin Immunol 2021; 17:1073-1081. [PMID: 34384327 DOI: 10.1080/1744666x.2021.1967748] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Interleukin (IL)-17 is critical in the pathogenesis of psoriasis and psoriatic arthritis (PsA) with most data suggesting that IL-17A alone was the key cytokine. However, in vitro and in vivo studies have suggested dual blockade of IL-17A and IL-17 F may be more effective than IL-17 A blockade alone. Bimekizumab is the first human monoclonal antibody to exert simultaneous specific inhibition of IL-17A and IL-17 F, and has been studied in several phase II/III trials for psoriasis and PsA. AREAS COVERED Bimekizumab is not currently licensed for use. A literature search identified clinical trials examining the efficacy and safety of bimekizumab for psoriasis and PsA, and these were critically appraised. EXPERT OPINION Clinical trials of bimekizumab have been promising, demonstrating a rapid onset of response and superior efficacy compared to three currently licensed biologics: secukinumab, ustekinumab, and adalimumab. Bimekizumab maintains a high level of efficacy with maintenance dosing intervals of 8 weeks, compared with 4 weeks for currently licensed IL-17A antagonists. No unexpected adverse events have been identified, although mild-to-moderate fungal infections occur in approximately 10%. Studies over longer time periods involving additional active comparators would be valuable in further defining the role of bimekizumab amongst currently available treatments.
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Affiliation(s)
- Zara Ali
- Dermatology Centre, Salford Royal NHS Foundation Trust, Manchester NIHR Biomedical Research Centre, the University of Manchester, UK
| | | | - Ali Al-Janabi
- Dermatology Centre, Salford Royal NHS Foundation Trust, Manchester NIHR Biomedical Research Centre, the University of Manchester, UK
| | - Richard B Warren
- Dermatology Centre, Salford Royal NHS Foundation Trust, Manchester NIHR Biomedical Research Centre, the University of Manchester, UK
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19
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Ali Z, Joergensen KM, Vestergaard C, Andersen AD, Alexaki M, Eiken AL, Manole I, Thomsen SF, Deleuran M, Zibert JR. Effective clinical study recruitment of patients with atopic dermatitis through social media. J Eur Acad Dermatol Venereol 2021; 35:e922-e923. [PMID: 34370350 DOI: 10.1111/jdv.17587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/30/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Z Ali
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark
| | | | - C Vestergaard
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | | | | | - S F Thomsen
- Department of Dermato-Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - M Deleuran
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
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20
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Lima J, Ali Z, Banerjee S. Immunotherapy and Systemic Therapy in Metastatic/Recurrent Endometrial and Cervical Cancers. Clin Oncol (R Coll Radiol) 2021; 33:608-615. [PMID: 34312021 DOI: 10.1016/j.clon.2021.07.002] [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: 05/26/2021] [Revised: 06/21/2021] [Accepted: 07/02/2021] [Indexed: 10/20/2022]
Abstract
Despite advances in the treatment of gynaecological malignancies, both recurrent endometrial and cervical cancers when not amenable to localised therapy (surgery or radiotherapy), remain incurable with limited prognosis and effective treatment options. Chemotherapy remains the standard of care for women with metastatic endometrial or cervical cancers. The addition of bevacizumab to first-line chemotherapy for metastatic cervical cancer patients represents a significant step forward in improving survival. More recently, immunotherapeutic strategies targeting the PD-1/-L1 pathway have shown clinical activity in both endometrial and cervical cancers. The increased understanding of the molecular biology of these cancers is shaping target-specific treatments. Here we summarise current treatment options and results from clinical trials of immunotherapy and other targeted therapies that have already changed, or have the potential to change, clinical practice in metastatic/recurrent endometrial and cervical cancer.
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Affiliation(s)
- J Lima
- The Gynaecology Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - Z Ali
- The Gynaecology Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - S Banerjee
- The Gynaecology Unit, The Royal Marsden NHS Foundation Trust, London, UK; The Institute of Cancer Research, London, UK.
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21
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Xing R, Mustapha O, Ali T, Rehman M, Zaidi SS, Baseer A, Batool S, Mukhtiar M, Shafique S, Malik M, Sohail S, Ali Z, Zahid F, Zeb A, Shah F, Yousaf A, Din F. Development, Characterization, and Evaluation of SLN-Loaded Thermoresponsive Hydrogel System of Topotecan as Biological Macromolecule for Colorectal Delivery. Biomed Res Int 2021; 2021:9968602. [PMID: 34285920 PMCID: PMC8275402 DOI: 10.1155/2021/9968602] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Chemotherapeutic drugs cause severe toxicities if administered unprotected, without proper targeting, and controlled release. In this study, we developed topotecan- (TPT-) loaded solid lipid nanoparticles (SLNs) for their chemotherapeutic effect against colorectal cancer. The TPT-SLNs were further incorporated into a thermoresponsive hydrogel system (TRHS) (TPT-SLNs-TRHS) to ensure control release and reduce toxicity of the drug. Microemulsion technique and cold method were, respectively, used to develop TPT-SLNs and TPT-SLNs-TRHS. Particle size, polydispersive index (PDI), and incorporation efficiency (IE) of the TPT-SLNs were determined. Similarly, gelation time, gel strength, and bioadhesive force studies of the TPT-SLNs-TRHS were performed. Additionally, in vitro release and pharmacokinetic and antitumour evaluations of the formulation were done. RESULTS TPT-SLNs have uniformly distributed particles with mean size in nanorange (174 nm) and IE of ~90%. TPT-SLNs-TRHS demonstrated suitable gelation properties upon administration into the rat's rectum. Moreover, drug release was exhibited in a control manner over an extended period of time for the incorporated TPT. Pharmacokinetic studies showed enhanced bioavailability of the TPT with improved plasma concentration and AUC. Further, it showed significantly enhanced antitumour effect in tumour-bearing mice as compared to the test formulations. CONCLUSION It can be concluded that SLNs incorporated in TRHS could be a potential source of the antitumour drug delivery with better control of the drug release and no toxicity.
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Affiliation(s)
- R. Xing
- Department of Pharmacy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
- Beijing Key Laboratory of Bio-characteristic Profiling for Evaluation of Rational Drug Use, Beijing 100038, China
| | - O. Mustapha
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - T. Ali
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - M. Rehman
- HE.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - S. S. Zaidi
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - A. Baseer
- Department of Pharmacy, Abasyn University Peshawar, KPK, Pakistan
| | - S. Batool
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - M. Mukhtiar
- Department of Pharmacy, Faculty of Medical and Health Sciences, University of Poonch Rawalakot, AJK, Pakistan
| | - S. Shafique
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, DOW University of Health Sciences, 74200 Karachi, Pakistan
| | - M. Malik
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - S. Sohail
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Z. Ali
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - F. Zahid
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - A. Zeb
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Sector G-7/4, Islamabad 44000, Pakistan
| | - F. Shah
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Sector G-7/4, Islamabad 44000, Pakistan
| | - A. Yousaf
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - F. Din
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Fisher R, Hadjittofi C, Ali Z, Antonas P, Parekh K, Seraj S, Thomas L, Uddin A, Lovett B. 755 Elective Surgery in the COVID-19 Pandemic: Outcomes of 100 Consecutive Cases. Br J Surg 2021. [PMCID: PMC8135925 DOI: 10.1093/bjs/znab134.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Introduction The COVID-19 pandemic halted elective surgical activity. Basildon University Hospital established an elective Green Zone for COVID-19 swab negative patients who isolated for 14 days. This study reviewed the outcomes of the first 100 patients. Method A single-centre study was performed. Demographic and perioperative electronic data were supplemented with telephone follow-up for the first 100 Green Zone patients and analysed in Microsoft Excel. Results One hundred Green Zone patients underwent surgery between 21/05/2020 and 16/06/2020. The median age was 55 (14-88) years. 52% were female. Their operations were performed by General Surgery (39%), Gynaecology (17%), Vascular Surgery (14%), Oral Surgery (12%), ENT (9%), Urology (8%), and Pain Management (1%). Preoperatively, 100% had a negative SARS-CoV-2 swab and one had CT evidence of mild resolving COVID-19. Two patients had postoperative SARS-CoV-2 swabs, both negative. Median length of stay was 0 (0-7) days. 84% responded to telephone follow-up at a median 25 (13-54) postoperative days, 69% of whom were asymptomatic There were no 30-day major complications (>Clavien-Dindo IIIa) or 90-day mortality. Conclusions Elective surgery can be safe during the COVID-19 pandemic, with appropriate measures in place. This has significant implications in the context of an ever-expanding NHS waiting list during a pandemic of uncertain duration.
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Affiliation(s)
- R Fisher
- Basildon University Hospital, Basildon, United Kingdom
| | - C Hadjittofi
- Basildon University Hospital, Basildon, United Kingdom
| | - Z Ali
- Basildon University Hospital, Basildon, United Kingdom
| | - P Antonas
- Basildon University Hospital, Basildon, United Kingdom
| | - K Parekh
- Basildon University Hospital, Basildon, United Kingdom
| | - S Seraj
- Basildon University Hospital, Basildon, United Kingdom
| | - L Thomas
- Basildon University Hospital, Basildon, United Kingdom
| | - A Uddin
- Basildon University Hospital, Basildon, United Kingdom
| | - B Lovett
- Basildon University Hospital, Basildon, United Kingdom
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PERMANA A, Effendi I, Ali Z, Suhaimi N, Suprapti S, Primadona Mulia D, Fitriani F, Stiawan I, Yonata A. POS-605 CORRELATION OF HAND GRIP STRENGTH WITH QUALITY OF LIFE CHRONIC KIDNEY DISEASE PATIENTS UNDERGOING HEMODIALYSIS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.634] [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: 11/27/2022] Open
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24
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Mulia D, Irawan R, Shanty M, Trikandiani I, Ariyanti F, Sugihartono S, Fahrizal F, Permana A, Effendi I, Ali Z, Suhaimi N, Suprapti S. POS-596 EFFECT OF DRY WEIGHT GAIN TO INCIDENCE OF INTRADIALYTIC HYPERTENSION AT HEMODYALISIS UNIT IN GUMAWANG. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.625] [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: 11/30/2022] Open
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25
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Eiken A, Laugesen CP, Isberg A, Thomsen SF, Ali Z, Chiriac A, Dutei AM, Deaconescu I, Manole I, Valk TJ, Andersen AD, Zibert JR. Smartphone data offer insights into disease activity and triggers in atopic dermatitis: a fully decentralized remote longitudinal pilot study. J Eur Acad Dermatol Venereol 2021; 35:e609-e612. [PMID: 33655625 DOI: 10.1111/jdv.17205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/13/2021] [Accepted: 02/24/2021] [Indexed: 11/30/2022]
Affiliation(s)
- A Eiken
- Studies&Me A/S, Copenhagen, Denmark
| | | | - A Isberg
- Studies&Me A/S, Copenhagen, Denmark
| | - S F Thomsen
- Department of Dermatology and Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Z Ali
- Department of Dermatology and Venereology and Wound Healing Centre, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark
| | | | | | | | - I Manole
- Studies&Me A/S, Copenhagen, Denmark.,Colentina Clinical Hospital, Bucharest, Romania
| | - T J Valk
- Studies&Me A/S, Copenhagen, Denmark
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26
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Khatib TZ, Osborne A, Yang S, Ali Z, Jia W, Manyakin I, Hall K, Watt R, Widdowson PS, Martin KR. Receptor-ligand supplementation via a self-cleaving 2A peptide-based gene therapy promotes CNS axonal transport with functional recovery. Sci Adv 2021; 7:7/14/eabd2590. [PMID: 33789891 PMCID: PMC8011959 DOI: 10.1126/sciadv.abd2590] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Gene replacement approaches are leading to a revolution in the treatment of previously debilitating monogenic neurological conditions. However, the application of gene therapy to complex polygenic conditions has been limited. Down-regulation or dysfunction of receptor expression in the disease state or in the presence of excess ligand has been shown to compromise therapeutic efficacy. Here, we offer evidence that combined overexpression of both brain-derived neurotrophic factor and its receptor, tropomyosin receptor kinase B, is more effective in stimulating axonal transport than either receptor administration or ligand administration alone. We also show efficacy in experimental glaucoma and humanized tauopathy models. Simultaneous administration of a ligand and its receptor by a single gene therapy vector overcomes several problems relating to ligand deficiency and receptor down-regulation that may be relevant to multiple neurodegenerative diseases. This approach shows promise as a strategy to target intrinsic mechanisms to improve neuronal function and facilitate repair.
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Affiliation(s)
- Tasneem Z Khatib
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.
- Eye Department, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
- Medical Sciences Division, University of Oxford, Oxford, UK
| | - Andrew Osborne
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Quethera Ltd., Cambridge, UK
- Ikarovec Ltd., Norwich Innovation Centre, Norwich, UK
| | - Sujeong Yang
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Zara Ali
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Wanyi Jia
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Ilya Manyakin
- Department of Physics, University of Cambridge, Cambridge, UK
| | - Katie Hall
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Robert Watt
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Peter S Widdowson
- Quethera Ltd., Cambridge, UK
- Ikarovec Ltd., Norwich Innovation Centre, Norwich, UK
| | - Keith R Martin
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.
- Eye Department, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
- Quethera Ltd., Cambridge, UK
- Cambridge NIHR Biomedical Research Centre, Cambridge, UK
- Wellcome Trust-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
- Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia
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Ali Z, Zeeshan A, Bhatti MM, Hobiny A, Saeed T. Insight into the Dynamics of Oldroyd-B Fluid Over an Upper Horizontal Surface of a Paraboloid of Revolution Subject to Chemical Reaction Dependent on the First-Order Activation Energy. Arab J Sci Eng 2021. [DOI: 10.1007/s13369-020-05324-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Yao Y, Ali Z, Thomsen S. Tezepelumab. Anti-TSLP (thymic stromal lymphopoietin), Treatment of severe asthma. DRUG FUTURE 2021. [DOI: 10.1358/dof.2021.46.7.3301491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Zhang D, Yao Y, Ali Z, Thomsen S. Abrocitinib. Tyrosine-protein kinase JAK1 inhibitor, Treatment of atopic dermatitis. DRUG FUTURE 2021. [DOI: 10.1358/dof.2021.46.6.3293576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Narang A, Chan G, Aframian A, Ali Z, Carr A, Goodier H, Morgan C, Park C, Sugand K, Walton T, Wilson M, Belgaumkar A, Gallagher K, Ghosh K, Gibbons C, Keightley A, Nawaz Z, Wakeling C, Sarraf K, Rogers BA, Kieffer WKM. Thirty-day mortality following surgical management of hip fractures during the COVID-19 pandemic: findings from a prospective multi-centre UK study. Int Orthop 2021. [PMID: 32862265 DOI: 10.1007/s00264-020-04739-y/figures/2] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
PURPOSE Thirty-day mortality of patients with hip fracture is well researched and predictive; validated scoring tools have been developed (Nottingham Hip Fracture Score, NHFS). COVID-19 has significantly greater mortality in the elderly and comorbid patients which includes hip fracture patients. Non-operative treatment is not appropriate due to significantly higher mortality, and therefore, these patients are often exposed to COVID-19 in the peri-operative period. What is unclear is the effect of concomitant COVID-19 infection in these patients. METHODS A multicentre prospective study across ten sites in the United Kingdom (responsible for 7% of hip fracture patients per annum in the UK). Demographic and background information were collected by independent chart review. Data on surgical factors included American Society of Anesthesiologists (ASA) score, time to theatre, Nottingham Hip fracture score (NHFS) and classification of fracture were also collected between 1st March 2020 and 30th April 2020 with a matched cohort from the same period in 2019. RESULTS Actual and expected 30-day mortality was found to be significantly higher than expected for 2020 COVID-19 positive patients (RR 3.00 95% CI 1.57-5.75, p < 0.001), with 30 observed deaths compared against the 10 expected from NHFS risk stratification. CONCLUSION COVID-19 infection appears to be an independent risk factor for increased mortality in hip fracture patients. Whilst non-operative management of these fractures is not suggested due to the documented increased risks and mortality, this study provides evidence to the emerging literature of the severity of COVID-19 infection in surgical patients and the potential impact of COVID-19 on elective surgical patients in the peri-operative period.
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Affiliation(s)
- A Narang
- Surrey and Sussex Healthcare NHS Trust, East Surrey Hospital, Canada Avenue, Redhill, Surrey, RH1 5RH, UK
| | - G Chan
- Western Sussex Hospitals NHS Foundation Trust, Chichester, UK
| | - A Aframian
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
| | - Z Ali
- Surrey and Sussex Healthcare NHS Trust, East Surrey Hospital, Canada Avenue, Redhill, Surrey, RH1 5RH, UK
| | - A Carr
- Surrey and Sussex Healthcare NHS Trust, East Surrey Hospital, Canada Avenue, Redhill, Surrey, RH1 5RH, UK
| | - H Goodier
- Poole General Hospital & the Royal Bournemouth Hospital, Poole, UK
| | - C Morgan
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
| | - C Park
- St Mary's Hospital, London, London, UK
| | - K Sugand
- St Mary's Hospital, London, London, UK
| | - T Walton
- Brighton and Sussex University Hospitals, Brighton, UK
| | - M Wilson
- Poole General Hospital & the Royal Bournemouth Hospital, Poole, UK
| | - A Belgaumkar
- Surrey and Sussex Healthcare NHS Trust, East Surrey Hospital, Canada Avenue, Redhill, Surrey, RH1 5RH, UK
| | - K Gallagher
- Poole General Hospital & the Royal Bournemouth Hospital, Poole, UK
| | - K Ghosh
- Western Sussex Hospitals NHS Foundation Trust, Chichester, UK
| | - C Gibbons
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
| | - A Keightley
- Royal Surrey Hospital NHS Foundation Trust, Guildford, UK
| | - Z Nawaz
- Frimley Park Hospital, Camberley, UK
| | - C Wakeling
- Western Sussex Hospitals NHS Foundation Trust, Chichester, UK
| | - K Sarraf
- St Mary's Hospital, London, London, UK
| | - B A Rogers
- Brighton and Sussex University Hospitals, Brighton, UK
| | - W K M Kieffer
- Surrey and Sussex Healthcare NHS Trust, East Surrey Hospital, Canada Avenue, Redhill, Surrey, RH1 5RH, UK.
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Langton AK, Ali Z, Hann M, Ayer J, Watson REB, Griffiths CEM. Prevalence of Atrophic and Hypertrophic Skin Ageing Phenotypes: A UK-based Observational Study. Acta Derm Venereol 2020; 100:adv00347. [PMID: 33241421 PMCID: PMC9309709 DOI: 10.2340/00015555-3708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Abigail K Langton
- Centre for Dermatology Research, The University of Manchester and Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom. E-mail:
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32
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Amir A, Ikram A, Ali Z, Rizwan M, Saeed A, Salman M. Pangenome analysis and reverse vaccinology of XDR Salmonella typhi strain from Pakistan identified novel vaccine targets. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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33
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Rehman H, Ali Z, Qadir A, H. Farooq M, Shuaib A, Zahra A, Shahzady T, Hussain H. Synthesis of CuO-NPS by simple wet chemical method using various dicarboxylic acid salts as precursors: Spectral characterization and in-vitro biological evaluation. B CHEM SOC ETHIOPIA 2020. [DOI: 10.4314/bcse.v34i2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, a simple chemical reduction method was employed to synthesize CuO-NPs. Various dicarboxylic acids were converted into Cu(II) salt of dicarboxylic acid which were used as precursors. NPs were produced by reducing precursors with NaBH4. Characteristics of synthesized NPs were investigated by using important analytical techniques including Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermo gravimetric analysis (TGA) and scanning electron microscopy (SEM). Developed NPs were investigated for their antibacterial activity against a range of bacterial strains by employing agar well diffusion method. CuO-NPs exhibited good to moderate activity against E-Coli, B. Subtilis and poor activity against K. pneumonia and Methicillin-resistant Staphylococcus aureus (MRSA). It was found that amongst all experienced compounds sample 2 showed good activity with minimum inhibition concentration (MIC) 10 µg/mL (zone of inhibition: 22± 0.12 mm) while sample 3 showed poor activity with MIC 40 µg/mL (zone of inhibition: 8.0 ± 0.18 mm).
KEY WORDS: CuO-NPs, Dicarboxylic acids, Sodium borohydride, Antibacterial study
Bull. Chem. Soc. Ethiop. 2020, 34(2), 323-334
DOI: https://dx.doi.org/10.4314/bcse.v34i2.10
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Uddin MJ, Rahman AF, Rahman S, Momenuzzaman NM, Rahman A, Majumder AS, Mohibullah AM, Chowdhury AH, Malik FN, Ahsan SA, Mohsin K, Haq MM, Chowdhury AW, Sohrabuzzaman AM, Rahman M, Chakraborty B, Rahman R, Khan SR, Khan KN, Reza AM, Hussain KS, Rashid M, Choudhury AK, Karmakar KK, Ali Z, Alam N, Rahman Z, Kabir CS, Banik D, Dutta A, Badiuzzaman M, Islam AW, Sium AH, Hossain MD, Ahmed N, Jahan J, Islam MS, Arefin MM, Cader FA, Banerjee SK, Hoque H, Shofiuddin M, Selim A, Das PK, Ahmed M, Dutto B, Alam S, Paul GK, Paul SK, Azam MG. National Clinical Guidance for the Management of Cardiovascular Intervention in the COVID-19 Pandemic: From Bangladesh Society of Cardiovascular Interventions (BSCI). Mymensingh Med J 2020; 29:488-494. [PMID: 32506111] [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: 06/11/2023]
Abstract
Since the first recorded case of SARS-CoV-2 in Bangladesh on 8th March 2020, COVID-19 has spread widely through different regions of the country, resulting in a necessity to re-evaluate the delivery of cardiovascular services, particularly procedures pertaining to interventional cardiology in resource-limited settings. Given its robust capacity for human-to-human transmission and potential of being a nosocomial source of infection, the disease has specific implications on healthcare systems and health care professionals faced with performing essential cardiac procedures in patients with a suspected or confirmed diagnosis of COVID-19. The limited resources in terms of cardiac catheterization laboratories that can be designated to treat only COVID positive patients are further compounded by the additional challenges of unavailability of widespread rapid testing on-site at tertiary cardiac hospitals in Bangladesh. This document prepared for our nation by the Bangladesh Society of Cardiovascular Interventions (BSCI) is intended to serve as a clinical practice guideline for cardiovascular health care professionals, with a focus on modifying standard practice of care during the COVID-19 pandemic, in order to ensure continuation of adequate and timely treatment of cardiovascular emergencies avoiding hospital-based transmission of SARS-COV-2 among healthcare professionals and the patients. This is an evolving document based on currently available global data and is tailored to healthcare systems in Bangladesh with particular focus on, but not limited to, invasive cardiology facilities (cardiac catheterization, electrophysiology & pacing labs). This guideline is limited to the provision of cardiovascular care, and it is expected that specific targeted pharmaco-therapeutics against SARS-CoV-2 be prescribed as stipulated by the National Guidelines on Clinical Management of Corona virus Disease 2019 (COVID-19) published by the Director General of Health Services, Ministry of Health and Family Welfare of Bangladesh.
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Affiliation(s)
- M J Uddin
- Professor MG Azam, National Institute of Cardiovascular Diseases, Dhaka, Bangladesh; E-mail:
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PERMANA A, Effendi I, Indrajaya T, Bahar E, Ali Z, Suhaimi N, Slamet S, Stiawan I, Jonata A. SAT-264 CORELATION BETWEEN SERUM SCLEROSTIN LEVELS AND CAROTID INTIMA MEDIA THICKNESS IN CHRONIC KIDNEY DISEASE PATIENTS UNDERGOING MAINTENANCE HEMODIALYSIS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.280] [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
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36
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MULIA D, Sugihartono S, Fahrizal F, Rico R, Elida S, Muchlis M, Effendi I, Ali Z, Novadian N, Suprapti S, Permana A, Salim N. SUN-144 The mortality rate of new onset chronic kidney disease patients in peripheral hospitals without dialysis unit. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.672] [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: 11/16/2022] Open
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37
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EMILIA E, Hakim R, Ali Z, Sukandi E, Kemas Y. SAT-101 THE ASSOCIATION BETWEEN ADIPONECTIN SERUM LEVEL AND CAROTID INTIMA MEDIA THICKNESS IN CHRONIC HEMODIALYSIS PATIENTS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.109] [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: 11/27/2022] Open
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38
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Mohd Zainuddin N, Abd. Rahman MS, Ab. Kadir MZA, Nik Ali NH, Ali Z, Osman M, Mansor M, Mohd Ariffin A, Syahmi Abd. Rahman M, Nor SFM, Mohamad Nasir NAF. Review of Thermal Stress and Condition Monitoring Technologies for Overhead Transmission Lines: Issues and Challenges. IEEE Access 2020; 8:120053-120081. [DOI: 10.1109/access.2020.3004578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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39
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Ali Z, Mensah T, Felgate M, Watt R, Khatib TZ, Tribble JR, Morgan JE, Martin KR, Osborne A. The role and mechanism of retinal ganglion cell death in glaucomatous injury. Acta Ophthalmol 2019. [DOI: 10.1111/j.1755-3768.2019.5204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zara Ali
- John van Geest Centre for Brain Repair Department of Clinical Neurosciences University of Cambridge UK
| | - Terrance Mensah
- John van Geest Centre for Brain Repair Department of Clinical Neurosciences University of Cambridge UK
| | | | - Robert Watt
- John van Geest Centre for Brain Repair Department of Clinical Neurosciences University of Cambridge UK
| | - Tasneem Z. Khatib
- John van Geest Centre for Brain Repair Department of Clinical Neurosciences University of Cambridge UK
| | - James R. Tribble
- School of Optometry and Vision Sciences Cardiff University Cardiff UK
| | - James E. Morgan
- School of Optometry and Vision Sciences Cardiff University Cardiff UK
| | - Keith R. Martin
- Centre for Eye Research Australia Royal Victorian Eye and Ear Hospital Melbourne Vic Australia
| | - Andrew Osborne
- John van Geest Centre for Brain Repair Department of Clinical Neurosciences University of Cambridge UK
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40
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Rehman H, Ali Z, G. Shahzady T, A. Abid M, Nazir S, Hussain H, Zahra A, Hussain I. Synthesis, X-ray analysis and antibacterial study of silver complex with ethyl-5-hydroxy- 2-oxo-2H-chromene-3-carboxylate. B CHEM SOC ETHIOPIA 2019. [DOI: 10.4314/bcse.v33i3.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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41
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Ali Z. Reducing interprofessional conflict in healthcare: Implementing conflict management training into the medical student curriculum. Med Teach 2019; 41:1091-1092. [PMID: 30922147 DOI: 10.1080/0142159x.2019.1583325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Zara Ali
- Newnham College, University of Cambridge , Cambridge , UK
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42
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Richards LA, Kumari A, Knezevic K, Thoms JA, von Jonquieres G, Napier CE, Ali Z, O'Brien R, Marks-Bluth J, Maritz MF, Pickett HA, Morris J, Pimanda JE, MacKenzie KL. DKC1 is a transcriptional target of GATA1 and drives upregulation of telomerase activity in normal human erythroblasts. Haematologica 2019; 105:1517-1526. [PMID: 31413099 PMCID: PMC7271591 DOI: 10.3324/haematol.2018.215699] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 08/13/2019] [Indexed: 12/15/2022] Open
Abstract
Telomerase is a ribonucleoprotein complex that maintains the length and integrity of telomeres, and thereby enables cellular proliferation. Understanding the regulation of telomerase in hematopoietic cells is relevant to the pathogenesis of leukemia, in which telomerase is constitutively activated, as well as bone marrow failure syndromes that feature telomerase insufficiency. Past studies showing high levels of telomerase in human erythroblasts and a prevalence of anemia in disorders of telomerase insufficiency provide the rationale for investigating telomerase regulation in erythroid cells. Here it is shown for the first time that the telomerase RNA-binding protein dyskerin (encoded by DKC1) is dramatically upregulated as human hematopoietic stem and progenitor cells commit to the erythroid lineage, driving an increase in telomerase activity in the presence of limiting amounts of TERT mRNA. It is also shown that upregulation of DKC1 was necessary for expansion of glycophorin A+ erythroblasts and sufficient to extend telomeres in erythroleukemia cells. Chromatin immunoprecipitation and reporter assays implicated GATA1-mediated transcriptional regulation of DKC1 in the modulation of telomerase in erythroid lineage cells. Together these results describe a novel mechanism of telomerase regulation in erythroid cells which contrasts with mechanisms centered on transcriptional regulation of TERT that are known to operate in other cell types. This is the first study to reveal a biological context in which telomerase is upregulated by DKC1 and to implicate GATA1 in telomerase regulation. The results from this study are relevant to hematopoietic disorders involving DKC1 mutations, GATA1 deregulation and/or telomerase insufficiency.
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Affiliation(s)
| | - Ashu Kumari
- Children's Cancer Institute Australia, Randwick
| | - Kathy Knezevic
- Adult Cancer Program, Prince of Wales Clinical School, Lowy Cancer Research Centre, UNSW, Sydney
| | - Julie Ai Thoms
- Adult Cancer Program, Prince of Wales Clinical School, Lowy Cancer Research Centre, UNSW, Sydney.,School of Medical Sciences, UNSW, Sydney
| | | | | | - Zara Ali
- Cancer Research Unit, Children's Medical Research Institute, Westmead
| | | | - Jonathon Marks-Bluth
- Adult Cancer Program, Prince of Wales Clinical School, Lowy Cancer Research Centre, UNSW, Sydney
| | | | - Hilda A Pickett
- Telomere Length Regulation Unit, Children's Medical Research Institute, Westmead
| | - Jonathan Morris
- The University of Sydney School of Medicine, Kolling Institute of Medical Research, St Leonards
| | - John E Pimanda
- Adult Cancer Program, Prince of Wales Clinical School, Lowy Cancer Research Centre, UNSW, Sydney.,School of Medical Sciences, UNSW, Sydney
| | - Karen L MacKenzie
- Children's Cancer Institute Australia, Randwick .,Cancer Research Unit, Children's Medical Research Institute, Westmead.,School of Women's and Children's Health, UNSW, Sydney.,Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
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43
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Ali Z, Charan P, Said JM, Stark Z. Axenfeld-Rieger syndrome as rare cause of umbilical abnormality. Ultrasound Obstet Gynecol 2019; 54:276-277. [PMID: 30255586 DOI: 10.1002/uog.20129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/18/2018] [Accepted: 09/20/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Z Ali
- The Royal Women's Hospital, Melbourne, Australia
| | - P Charan
- Maternal Fetal Medicine, Sunshine Hospital, Western Health, Melbourne, Australia
| | - J M Said
- Maternal Fetal Medicine, Sunshine Hospital, Western Health, Melbourne, Australia
| | - Z Stark
- Maternal Fetal Medicine, Sunshine Hospital, Western Health, Melbourne, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, Australia
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44
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Ali Z, Todd PM. Total body skin examination increases squamous cell carcinoma detection: a retrospective cohort study. Clin Exp Dermatol 2019; 45:86-88. [PMID: 31120587 DOI: 10.1111/ced.14013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2019] [Indexed: 11/29/2022]
Abstract
Squamous cell carcinomas (SCCs) have the potential for local tissue destruction and metastasis. The risk of complications increases if the lesion is not diagnosed and excised in a timely manner. Total body skin examination (TBSE) has been reported to increase melanoma detection; the objective of this study was to determine if it also increases SCC detection. Analysis of 469 SCCs diagnosed at a UK tertiary centre showed that 6.8% of these were detected incidentally and not from the index lesion that prompted referral. These incidentally detected SCCs tended to represent early disease, and therefore carried lower risk of complications. Our findings suggest that full skin checks may increase the number of SCCs detected, and at an earlier stage of disease. Therefore, we encourage the use of TBSE in all dermatology outpatient appointments, and make suggestions as to how to incorporate it into the limited time available in dermatology clinics.
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Affiliation(s)
- Z Ali
- Department of Dermatology, Addenbrooke's Hospital, Cambridge, UK
| | - P M Todd
- Department of Dermatology, Addenbrooke's Hospital, Cambridge, UK
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45
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Ali A, Downey P, Anwer M, Bonde P, Ali Z. Prolongation of the Agonal Phase in the DCD Donor Results in Impairment of Myocardial Contractility Following DCD Heart Resuscitation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.600] [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: 10/27/2022] Open
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46
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Sivanandan M, Vivekananthan C, Ali Z, Sundar S. EP-1530 Prostate volume reduction with neo-adjuvant hormones and its relation with bladder and rectal volume. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31950-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Hifzulrahman, Abdullah M, Akhtar MU, Pasha TN, Bhatti JA, Ali Z, Saadullah M, Haque MN. Comparison of oil and fat supplementation on lactation performance of Nili Ravi buffaloes. J Dairy Sci 2019; 102:3000-3009. [PMID: 30799102 DOI: 10.3168/jds.2018-15452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 07/27/2018] [Accepted: 12/20/2018] [Indexed: 11/19/2022]
Abstract
The effects of feeding rumen-inert fat sources on production responses of lactating dairy cows have been well reported but less thoroughly described in lactating dairy buffalo. The objective of this study was to investigate the effect of oil and 2 different rumen-inert fat sources on dry matter intake, milk yield, milk composition, and milk fatty acid (FA) profile in Nili Ravi buffalo. Twelve multiparous mid-lactating Nili Ravi buffaloes received 4 treatments in a 4 × 4 Latin square design with a period length of 21 d. The treatments were (1) the basal diet without supplementation of oil or fats (CTRL), (2) the basal diet supplemented with canola oil (CO), (3) the basal diet supplemented with calcium salts of palm FA (Ca-FA), and (4) the basal diet supplemented with high palmitic acid (PA). Dry matter intake was decreased by 4.4% in the CO compared with Ca-FA and PA. Milk yield and milk fat yield were increased by 7.8 and 14.3%, respectively, in CO, Ca-FA, and PA compared with the CTRL. Milk fat content increased by 7.5%, whereas milk fat yield tended to increase with the supplementation of Ca-FA and PA compared with CO. No effect on milk yield and milk composition was observed in Ca-FA versus PA treatments. The yield of medium-chain FA was increased by Ca-FA and PA versus CO. The CO treatment increased the yield of long-chain FA compared with Ca-FA and PA treatments. Plasma glucose level was higher in CO, Ca-FA, and PA compared with the CTRL. In conclusion, feeding rumen-inert fats in the lactating buffalo diet proved to be a useful strategy to increase the 3.5% fat-corrected milk yield due to the higher milk fat content in this study.
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Affiliation(s)
- Hifzulrahman
- Department of Livestock Production, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - M Abdullah
- Department of Livestock Production, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - M U Akhtar
- Department of Animal Nutrition, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - T N Pasha
- Department of Animal Nutrition, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - J A Bhatti
- Department of Livestock Production, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - Z Ali
- Applied Chemistry Research Center, Pakistan Council of Scientific and Industrial Research Laboratories Complex, Lahore 54600, Pakistan
| | - M Saadullah
- Department of Livestock Production, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - M N Haque
- Department of Animal Nutrition, University of Veterinary & Animal Sciences, Outfall Road, Lahore 54000, Pakistan.
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Ali Z. Integrating Palliative Care in Cancer Care in Kenya. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.35700] [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: 11/20/2022] Open
Abstract
Background and context: Most Africa countries now recognize the pain and suffering of many patients and families who have no access to cure (where cure is possible), cannot afford treatment of cancer or other progressive chronic illnesses, are stigmatized or discriminated against because of their illness among many other dehumanizing issues. This project aims to ensure that all those in need of palliative care and pain relief have access close to their homes. Aim: This project aims to ensure that all those in need of palliative care and pain relief have access close to their homes. Strategy/Tactics: In the recent past Kenya Hospices and Palliative Care Association has extensively advocated for the integration of palliative care into the Kenya health services; thus, resulting in many health care professionals being trained in palliative care; integration of palliative care in public, private and mission health institutions and integration of palliative care in undergraduate medical and nursing curricula, as well as policy documents. Program/Policy process: The process of integrating palliative care in public hospitals involved advocacy at the national level as well as at the institutional level, training of health care professionals and setting up services within the hospitals that we worked with. Technical support was provided to each individual institution as needed. Outcomes: Palliative care units have been set up in over 25 government hospitals across the country. National Palliative Care Guidelines have been developed. A Diploma in Palliative Care for nurses has been initiated at the Kenya Medical Training College since 2012. Palliative care has been included in all the relevant health policies/strategies. Kenya Essential Medicines List includes Opioids. The Ministry of Health is supplying morphine powder for the country. More patients are now able to access quality palliative care. What was learned: National associations are challenged by an enormous need for services, education and training of health care professionals as well as educating the public and policy makers. The government has no budget for palliative care and most of the work is donor funded. Cultural beliefs are a big barrier to accessing PC. Only a small fraction of patients in need of opioids for pain medication are receiving opioids due to lack of awareness; reluctance of HPCs to prescribe. For many years PC in Kenya has been provided by a few hospices, thus making access very limited to many who are in need. Regional and national associations in Africa should work together with African Ministries of Health and other relevant stakeholders to ensure that there is greater access to palliative care for cancer patients. This encompasses addressing issues of accessibility, affordability, quality palliative care (PC) and a human's right approach to PC.
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Affiliation(s)
- Z. Ali
- Kenya Hospices and Palliative Care Association, Nairobi, Kenya
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Vaggers S, Warner R, Forster L, Ali Z, Pal P, Graham S. The relationship between ethnicity and stone composition in a large multi-ethnic London NHS Trust. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.638] [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: 10/28/2022]
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Ali Z, Suppli Ulrik C, Agner T, Thomsen S. Is atopic dermatitis associated with obesity? A systematic review of observational studies. J Eur Acad Dermatol Venereol 2018; 32:1246-1255. [DOI: 10.1111/jdv.14879] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/25/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Z. Ali
- Department of Pulmonary Medicine; Hvidovre Hospital; Hvidovre Denmark
- Department of Dermatology; Bispebjerg Hospital; Copenhagen NV Denmark
| | - C. Suppli Ulrik
- Department of Pulmonary Medicine; Hvidovre Hospital; Hvidovre Denmark
- Institute of Clinical Medicine; University of Copenhagen; Copenhagen Denmark
| | - T. Agner
- Department of Dermatology; Bispebjerg Hospital; Copenhagen NV Denmark
| | - S.F. Thomsen
- Department of Dermatology; Bispebjerg Hospital; Copenhagen NV Denmark
- Department of Biomedical Sciences; University of Copenhagen; Copenhagen Denmark
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