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Akter F, Khalilullah I, Ahmed MR, Akter K, Arefin MS, Hassan M, Banik D, Yeasmin S. Association of Modified Sequential Organ Failure Assessment (MSOFA) Score and C-reactive protein (CRP) With the Outcome of Patients under Mechanical Ventilation. Mymensingh Med J 2021; 30:1016-1022. [PMID: 34605472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Different scoring systems has been discovered in medical practice, more specifically for ICU treatment, are designed to objectively quantify physiologic derangements and comorbid conditions for estimating mortality, length of stay and ICU resource use. This observational and descriptive study was carried out in the ICU, BSMMU, Dhaka, during March 2014 to May 2016, to determine the association of MSOFA score, CRP level with the outcome of patients on mechanical ventilation as well as compare the MSOFA and CRP combined with MSOFA alone. For this purpose, a total of 60 critically ill patients admitted in the above hospital were included in this study. Patients with an ICU stay of less than 48 hours, readmissions not considered, known case of neuromuscular disease, connective tissue disorder, renal disease and pregnancy and Patients refused to give written consent were excluded from the study. Patients who had MSOFA ≥7, their mean duration of ICU stay were 10.9±6.7 days and mean duration of mechanical ventilation 7.63±5.2 days. Patients who had CRP >11mg/L, their mean duration of ICU stay was 10.8±7.2 days and mean duration of mechanical ventilation was 7.35±5.1 days. Patients who had MSOFA score ≥7 and CRP ≥11mg/L with mean duration of ICU stay was 10.82±7.2 days and mean duration of mechanical ventilation was 7.12±5.2 days. 69.2% patients were CRP status positive (≥11) in death group and 33.3% had alive group. 92.3% patients were Positive (CRP ≥7 or MSOFA ≥11) in death group and 14.3% had alive group. MSOFA identified true positive 32 cases for death, false positive 5 cases, false negative 7 cases and true negative 16 cases confirmed by patient's outcome. CRP level identified true positive 27 cases for death, false positive 7 cases, false negative 12 cases and true negative 14 cases confirmed by patients outcome. Combined (CRP ≥11mg/L and MSOFA score ≥7) identified true positive 33 cases for death, false positive 1 case, false negative 6 cases and true negative 20 cases confirmed by patient's outcome. We concluded that there is a positive correlation (r=0.323; p=0.014) between CRP status with MSOFA score, positive correlation (r=0.402; p=0.002) between MSOFA score with MSOFA score and CRP combined and a positive correlation (r=0.999; p=0.001) between CRP level with MSOFA score and CRP combined.
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Telisinghe L, Ruperez M, Amofa-Sekyi M, Mwenge L, Mainga T, Kumar R, Hassan M, Chaisson L, Naufal F, Shapiro A, Golub J, Miller C, Corbett E, Burke R, MacPherson P, Hayes R, Bond V, Daneshvar C, Klinkenberg E, Ayles H. Does tuberculosis screening improve individual outcomes? A systematic review. EClinicalMedicine 2021; 40:101127. [PMID: 34604724 PMCID: PMC8473670 DOI: 10.1016/j.eclinm.2021.101127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND To determine if tuberculosis (TB) screening improves patient outcomes, we conducted two systematic reviews to investigate the effect of TB screening on diagnosis, treatment outcomes, deaths (clinical review assessing 23 outcome indicators); and patient costs (economic review). METHODS Pubmed, EMBASE, Scopus and the Cochrane Library were searched between 1/1/1980-13/4/2020 (clinical review) and 1/1/2010-14/8/2020 (economic review). As studies were heterogeneous, data synthesis was narrative. FINDINGS Clinical review: of 27,270 articles, 18 (n=3 trials) were eligible. Nine involved general populations. Compared to passive case finding (PCF), studies showed lower smear grade (n=2/3) and time to diagnosis (n=2/3); higher pre-treatment losses to follow-up (screened 23% and 29% vs PCF 15% and 14%; n=2/2); and similar treatment success (range 68-81%; n=4) and case fatality (range 3-11%; n=5) in the screened group. Nine reported on risk groups. Compared to PCF, studies showed lower smear positivity among those culture-confirmed (n=3/4) and time to diagnosis (n=2/2); and similar (range 80-90%; n=2/2) treatment success in the screened group. Case fatality was lower in n=2/3 observational studies; both reported on established screening programmes. A neonatal trial and post-hoc analysis of a household contacts trial found screening was associated with lower all-cause mortality. Economic review: From 2841 articles, six observational studies were eligible. Total costs (n=6) and catastrophic cost prevalence (n=4; range screened 9-45% vs PCF 12-61%) was lower among those screened. INTERPRETATION We found very limited patient outcome data. Collecting and reporting this data must be prioritised to inform policy and practice. FUNDING WHO and EDCTP.
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Mohamed D, Hassan M, Abdel Moneim S, Mahmoud E. Antioxidant, anti-cancer and anti-arthritic activities of acetogenin-rich extract of avocado pulp. EGYPTIAN JOURNAL OF CHEMISTRY 2021. [DOI: 10.21608/ejchem.2021.90308.4309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mohd-Agos S, Mohd-Husin N, Zakariah MI, Yusoff NAH, Wahab W, Jones JB, Hassan M. Three new species of Acanthocephala from Acanthogyrus (Acanthosentis) (Acanthocephala: Quadrigyridae) from tinfoil barb fish, Barbonymus schwanenfeldii in Lake Kenyir, Terengganu, Malaysia. Trop Biomed 2021; 38:387-395. [PMID: 34608112 DOI: 10.47665/tb.38.3.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study was carried out in order to identify acanthocephalan species complexes, based on morphological variability, infecting Barbonymus schwanenfeldii from Lake Kenyir, Terengganu, Malaysia. Acanthocephala were fixed in ethanol, stained with aceto-carmine and studied morphologically by using a light microscope. Variation in morphological traits such as proboscis, proboscis receptacle, egg, testes shape and location, number of hooks and cement gland has been traditionally used to diagnose the acanthocephalans species but the delimitations between closely related species are still confusing and are always questionable among taxonomists. Molecular analysis was used for support the identification. Morphological variability prospecting reveals the presence of three different new species complexes from the subgenus Acanthosentis by referring published taxonomic keys. These new species may be distinguished from the other 46 described species of Acanthosentis by having six unique structures: the presence of an anterior parareceptacle structure (PRS); vaginal sleeve structure; a paired lateral, cone-shaped, muscular jacket surrounding the vagina; alternating pattern and size of proboscis hooks, variation in proboscis size and shape; the presence of the circular collar ring around the neck between the proboscis and trunk and lastly the presence of a muscular-like structure attached to the collar ring on the proboscis. These acanthocephalans found in the intestine of B. schwanenfeldii in Kenyir Lake Malaysia represent new species, named Acanthogyrus ( Acanthosentis) kenyirensis n.sp., A. ( A.) terengganuensis n.sp. and A. ( A.) tembatensis n. sp.
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Hassan M, Arfat M, Arshad U, Ahmad N. Ovarian dynamics, hormone profiles, and characterization of ovarian and uterine blood flow in cycling Sahiwal cows. S AFR J ANIM SCI 2021. [DOI: 10.4314/sajas.v51i2.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The objectives were to investigate the ovarian dynamics and hormonal profiles during the oestrus cycle, and to characterize the ovarian and uterine blood flow (OBF versus UBF) indices on the extent of vascular perfusion towards the dominant follicle (DF) or corpus luteum (CL) during the peri-ovulatory follicular wave in Sahiwal cows. In experiment 1, cyclic cows (n = 21) were selected at their spontaneous oestrus (day 0) and subjected to B-mode ultrasonography throughout the oestrus cycle. In experiment 2, cyclic cows (n = 9) were randomly selected at day 0, and categorized according to the intra-ovarian patterns as ovaries with DF (n = 3), CL (n = 3) or both (DF+CL; n = 3) to characterize the OBF and UBF indices using Doppler ultrasonography. The length of the oestrus cycle (days), number of follicular waves (n) and size (mm) of DF and CL were 20.1 ± 0.9, 2.1 ± 0.2, 14.7 ± 0.7 and 15.9 ± 2.5, respectively. The concentrations (ng/mL) of plasma progesterone increased linearly, and a peak was attained at day 12.2 ± 1.0. However, it reduced linearly with the onset of luteolysis at day 16.4 ± 0.3 of the oestrus cycle. The plasma progesterone (P4) concentrations and the diameter of CL correlated throughout the oestrus cycle. The mean OBF and UBF indices did not differ between intraovarian patterns. Taken together, this information on reproductive physiological parameters could be used to develop synchronization protocols to improve reproductive management in Sahiwal cows.
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Hassan M, Shafique F, Bhutta H, Haq K, Almansouri T, Asim N, Khan D, Butt S, Ali N, Akbar N. A comparative study to evaluate the effects of antibiotics, plant extracts and fluoride-based toothpaste on the oral pathogens isolated from patients with gum diseases in Pakistan. BRAZ J BIOL 2021; 83:e242703. [PMID: 34320048 DOI: 10.1590/1519-6984.242703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/30/2020] [Indexed: 11/22/2022] Open
Abstract
Oral diseases caused by various microorganisms are common around the world. Scientific research has now been focusing on novel medicines to overcome bacterial resistance and antibiotics side effects; therefore, the current study was designed to assess the efficacy of certain antibiotics, toothpaste, and medicinal plant extracts (Ajuga bracteosa and Curcuma longa) versus the bacterial pathogens isolated from the human oral cavity. A total of 130 samples were collected from Khyber Teaching Hospital Peshawar, Pakistan, among those 27 species isolated, and eight bacterial species were identified from the samples. Among all the bacterial species, Staphylococcus aureus (29.62%) and Proteus mirabilis (22.2%) were found to be more prevalent oral pathogens. In comparison, the least pervasive microbes were Proteus vulgaris, Shigella sonnei, Escherichia coli and Aeromonas hydrophila. The study also suggested that dental problems were more prevalent in males (41-50 years of age) than females. Among the eight antibiotics used in the study, the most promising results were shown by Foxicillin against A. hydrophila. The survey of TP1 revealed that it showed more potent antagonist activity against Proteus vulgaris as compared TP2 and TP3 that might be due to the high content of fluoride. The Curcuma longa showed more significant activity than Ajuga bracteosa (Stem, leaves and root) extracts. The data obtained through this study revealed that antibiotics were more effective for oral bacterial pathogens than toothpaste and plant extracts which showed moderate and low activity, respectively. Therefore, it is suggested that the active compounds in individual medicinal plants like Curcuma longa and Ajuga bracteosa could replace the antibiotics when used in daily routine as tooth cleansers or mouth rinses.
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Hassan M, Laureti S, Rinaldi C, Fagiani F, Varotto S, Barucca G, Schmidt NY, Varvaro G, Albrecht M. Perpendicularly magnetized Co/Pd-based magneto-resistive heterostructures on flexible substrates. NANOSCALE ADVANCES 2021; 3:3076-3084. [PMID: 36133649 PMCID: PMC9418425 DOI: 10.1039/d1na00110h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/08/2021] [Indexed: 06/14/2023]
Abstract
Flexible magneto-resistive heterostructures have received a great deal of attention over the past few years as they allow for new product paradigms that are not possible with conventional rigid substrates. While the progress and development of systems with longitudinal magnetic anisotropy on non-planar substrates has been remarkable, flexible magneto-resistive heterostructures with perpendicular magnetic anisotropy (PMA) have never been studied despite the possibility to obtain additional functionality and improved performance. To fill this gap, flexible PMA Co/Pd-based giant magneto-resistive (GMR) spin-valve stacks were prepared by using an innovative transfer-and-bonding strategy exploiting the low adhesion of a gold underlayer to SiO x /Si(100) substrates. The approach allows overcoming the limits of the direct deposition on commonly used polymer substrates, whose high surface roughness and low melting temperature could hinder the growth of complex heterostructures with perpendicular magnetic anisotropy. The obtained PMA flexible spin-valves show a sizeable GMR ratio (∼1.5%), which is not affected by the transfer process, and a high robustness against bending as indicated by the slight change of the magneto-resistive properties upon bending, thus allowing for their integration on curved surfaces and the development of a novel class of advanced devices based on flexible magneto-resistive structures with perpendicular magnetic anisotropy. Besides endowing the family of flexible electronics with PMA magneto-resistive heterostructures, the exploitation of the results might apply to high temperature growth processes and to the fabrication of other functional and flexible multilayer materials engineered at the nanoscale.
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Saadia S, Hassan M, Ejaz T, Shaikh A, Saeed Y, Ahsan S. QT interval in patients receiving HCQ in SARS-CoV-2- A study on risk factors and correlation of baseline QTc with delta QTc in Pakistani population. Europace 2021. [PMCID: PMC8194794 DOI: 10.1093/europace/euab116.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Funding Acknowledgements Type of funding sources: None. Introduction Hydroxychloroquine(HCQ) use alone or in combination with Azithromycin (AZM) in SARS-CoV-2 infection is associated with QTc prolongation and risk of arrhythmias. Objectives To determine changes in QTc interval and factors predictive of extreme QTc prolongation in patients receiving HCQ alone or in azithromycin combination in Pakistani patients. Methodology Retrospective review of records of hospitalized patients with SARS-Cov2 RT-PCR positive result who received HCQ or HCQ/Azithromycin in combination from March-May 2020. Baseline ECGs as well as post drug use ECGs data was recorded. Tisdale score was calculated for predicting risk of QTc prolongation,QTc interval was calculated using Bazett formula. Data entry and analysis was done in SPSS version 23. Results A total of 134 patients were included in the study. 82.1%(110) were males and 17.9%(24) were females, mean age was 54.9 ± 13.7 years. 61.2% (82) had severe disease and 38.8 %(52) had non-severe disease. 14.2%(19) had history of cardiac disease, 35.8%(48) had hypertension and 35.1%(47) had diabetes mellitus. 70.1% (94) patients had received HCQ, AZM, or HCQ/AZM in combination. 40(29.9%) patients had not received any drug. Median baseline QTc among controls and non-control group was 383.5 (IQR 342.25-413.75)msec and 379(IQR 358-402)msec respectively. HCQ alone was administered to 26.9%(36) and HCQ/AZM to 33.6%(45) patients. 55.6% (45/81) developed QTc prolongation(QTc> 480 msec) or delta QTc increase > 60 msec. 6.2%(5/81) had absolute QTc > 500 msec post-drug administration. 55.6%(25/45) and 30.6%(11/36) (p-value 0.024) developed QTc prolongation in combination and HCQ alone groups respectively. Delta QTc increased to >60msec in 42.0% (34/81); 53.3%(24/45) in combination group and in 27.8%(10/36) of those receiving HCQ alone( p-value 0.021). Median delta change was 63( IQR 25-81) and 48.5(IQR 26.25-66.75) msec; Median Day 2 QTc was 413.5 msec (IQR 377.5-436) and 413 msec (IQR361-447); and median maximum QTc was 447(IQR391-471) and 429.8(IQR401.5-45.75) msec in those receiving HCQ/AZM combination and HCQ alone respectively. 9%(12/134) had arrhythmias during hospital stay, in 8.9% (4) and 5.6%(2) patients of those receiving HCQ/AZM combination and HCQ alone respectively, no patient developed torsade de pointes, one patient had non-sustained VT. There was no statistically significant association of QTc prolongation with mortality, acute kidney injury, myocardial injury or severity of disease. Diuretic use was found to be statistically significant association with QTc prolongation(p-value 0.038). There was a weak correlation of baseline QTc with Δ QTc(r = 0.207 and p-value 0.017) Conclusion QTc prolongation was observed in a significant population of patients receiving HCQ and HCQ/AZM combination, however, no significant life threating arrhythmias occurred.
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Yusoff N, Rukayadi Y, Abas F, Khatib A, Hassan M. Antimicrobial stability of Cosmos caudatus extract at varies pH and
temperature, and compounds identification for application as food sanitiser. FOOD RESEARCH 2021. [DOI: 10.26656/fr.2017.5(3).710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The occurrence of foodborne diseases and food poisoning due to the consumption of
contaminated foods is increasing nowadays, thus become a major threat to food industries
in particular. In order to overcome this problem, prevention must be taken at the early
stages of food preparation like sanitization. Typically, chemically based antimicrobial
sanitisers were used in food industries to remove dirt and microbial population on food
surfaces or food equipment. However, the emergence of microbial resistance and
consumer awareness on the formation of carcinogenic compounds and safety issues in
long term effects has led researchers to find an alternative. Therefore, a study was
conducted to find a natural food sanitiser that was able to minimize the number of harmful
bacteria without a change in the food quality and safety. In this study, the stability of
Cosmos caudatus extract at different pH (pH 3, pH 7, pH 8 and pH 11) and temperatures
(25°C, 30°C, 50°C, 80°C and 121°C) were determined for suitability as food sanitiser.
The identification and quantification of this plant extract also were performed using HPLC
and LC-MS/MS analysis to detect the major compounds which contributed to the
biological activity of C. caudatus extract. Generally, results showed that the antimicrobial
activity of C. caudatus extract was stable after exposure to various pH and temperatures,
in fact, the extract increased its antimicrobial activity at lower acidity (pH 3) and higher
temperature (50°C) against most pathogens. Furthermore, quercetin 3-O-rhamnoside was
identified as a major compound in C. caudatus extract with the relative amounts of 29.66
mg/g. It can be concluded that C. caudatus extract is stable when exposed to various pH
and temperatures. These useful findings have proved the antimicrobial stability of C.
caudatus extract after exposure to several pH and temperatures thus can be further
developed as a food sanitiser in food industries.
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Arogundade F, Hassan M, Omotoso B, Okunola O, Sanusi A, Olowu W. POS-226 BIOELECTRICAL IMPEDANCE ANALYSIS AND RENAL FUNCTION IN NIGERIANS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Olatosi OO, Alade AA, Naicker T, Busch T, Oyapero A, Li M, Pape J, Olotu J, Awotoye W, Hassan M, Adeleke C, Adeyemo WL, Shaffer J, Marazita ML, Butali A. Dental Caries Severity and Nutritional Status of Nigerian Preschool Children. JDR Clin Trans Res 2021; 7:154-162. [PMID: 33764218 DOI: 10.1177/23800844211002108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Malnutrition in children is one of the most prevalent global health challenges, and malnourished children have a higher risk of death from childhood diseases. Early childhood caries (ECC) is the most common chronic disease of childhood. Complications from ECC such as pain, loss of tooth/teeth, and infection can undermine a child's nutrition and growth. AIM This study aims to evaluate the severity of decay, missing, and filled tooth (dmft) by nutritional status using the z scores of the anthropometric measurements: height for age (HFA), weight for age (WFA), weight for height (WFH), and body mass index for age (BMIA) among children with ECC in Nigeria. STUDY DESIGN This is a cross-sectional study conducted in 5 local government areas (LGAs) in Lagos State, Nigeria. A multistage sampling technique was used. RESULTS A total of 273 cases of ECC were included in the analyses (mean age 4.19 ± 0.96 y). Overall, the mean dmft was 3.04 ± 2.28, and most (96%) were accounted for by untreated decay. The distribution of dmft within the different z score categories of BMIA (<-3 = severely wasted, -2 to -3 = wasted, -2 to +2 = normal, +2 to +3 = overweight and >+3 = obese) showed the highest dmft scores among the combined severely wasted and wasted groups, lowest among children with normal z scores, and intermediate in the overweight and obese groups. There was a significant negative correlation between BMIA z score, WFH z score, and dmft (r = -0.181, P < 0.05 and r = -0.143, P < 0.05, respectively). However, the correlations between HFA z score, WFA z score, and dmft were positive but not significant (r = 0.048, P = 0.44 and r = 0.022, P = 0.77, respectively). CONCLUSION Our study showed an increased severity of dental caries among severely wasted or wasted children with ECC compared to those of normal or overweight. KNOWLEDGE TRANSFER STATEMENT The results from this study will raise awareness among clinicians and policy makers on the need for a primary prevention program for early childhood caries in countries with high burden of malnutrition and limited resources. Also, it will help draw the attention of clinicians to the caries status of malnourished children that can be managed to improve the nutritional outcomes.
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Fleury E, Trnková P, Erdal E, Hassan M, Stoel B, Jaarma‐Coes M, Luyten G, Herault J, Webb A, Beenakker J, Pignol J, Hoogeman M. Three-dimensional MRI-based treatment planning approach for non-invasive ocular proton therapy. Med Phys 2021; 48:1315-1326. [PMID: 33336379 PMCID: PMC7986198 DOI: 10.1002/mp.14665] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 10/05/2020] [Accepted: 11/30/2020] [Indexed: 12/23/2022] Open
Abstract
PURPOSE To develop a high-resolution three-dimensional (3D) magnetic resonance imaging (MRI)-based treatment planning approach for uveal melanomas (UM) in proton therapy. MATERIALS/METHODS For eight patients with UM, a segmentation of the gross tumor volume (GTV) and organs-at-risk (OARs) was performed on T1- and T2-weighted 7 Tesla MRI image data to reconstruct the patient MR-eye. An extended contour was defined with a 2.5-mm isotropic margin derived from the GTV. A broad beam algorithm, which we have called πDose, was implemented to calculate relative proton absorbed doses to the ipsilateral OARs. Clinically favorable gazing angles of the treated eye were assessed by calculating a global weighted-sum objective function, which set penalties for OARs and extreme gazing angles. An optimizer, which we have named OPT'im-Eye-Tool, was developed to tune the parameters of the functions for sparing critical-OARs. RESULTS In total, 441 gazing angles were simulated for every patient. Target coverage including margins was achieved in all the cases (V95% > 95%). Over the whole gazing angles solutions space, maximum dose (Dmax ) to the optic nerve and the macula, and mean doses (Dmean ) to the lens, the ciliary body and the sclera were calculated. A forward optimization was applied by OPT'im-Eye-Tool in three different prioritizations: iso-weighted, optic nerve prioritized, and macula prioritized. In each, the function values were depicted in a selection tool to select the optimal gazing angle(s). For example, patient 4 had a T2 equatorial tumor. The optimization applied for the straight gazing angle resulted in objective function values of 0.46 (iso-weighted situation), 0.90 (optic nerve prioritization) and 0.08 (macula prioritization) demonstrating the impact of that angle in different clinical approaches. CONCLUSIONS The feasibility and suitability of a 3D MRI-based treatment planning approach have been successfully tested on a cohort of eight patients diagnosed with UM. Moreover, a gaze-angle trade-off dose optimization with respect to OARs sparing has been developed. Further validation of the whole treatment process is the next step in the goal to achieve both a non-invasive and a personalized proton therapy treatment.
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El-Sahlamy N, Hassan M, Khedr A. Comparison between standard solid fuel and a new annular fuel performance in the core of a PWR. KERNTECHNIK 2021. [DOI: 10.3139/124.190020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In new generation PWR the annular fuel has been proposed as one of the options to achieve higher power density, larger safety margin and reduced electricity generation cost. In the current work, RELAP5 code is used to compare the thermal hydraulic parameters for both solid fuel and internally and externally cooled annular fuel in a core of a PWR. MCNP6 code is used to evaluate the neutronic design and basic safety parameters of the annular fuel. To accomplish this goal, RELAP5 input files for both solid and annular fuels are developed. In these files, a 13 · 13 array annular fuel design is used while the 17 · 17 standard array design is used for the solid fuel. A 100% core power, steady state normal operation is assumed in the current investigation. Also, MCNP6 code input files for both fuels are prepared. It is found that annular fuel has lower peak fuel temperature than the standard solid fuel, which is an important advantage of the annular fuel rather than the solid one. Also, comparisons were performed for reactivity feedback coefficients of the two fuel types at BOC. Burnup calculations were performed to study the energy conversion capability of the annular fuel as well as rim effects.
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Louis HK, Hassan M. Neutronic analysis of gadolinia bearing fuel assemblies. KERNTECHNIK 2021. [DOI: 10.3139/124.190082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Gadolinium is mixed with nuclear fuel for extended burnup, increased reactor cycle Lengths, and in-out core refueling schemes. The purpose of this work is to investigate the effect of Gadolinium on neutronic parameters. A comprehensive analysis of different fuel assemblies bearing gadolinia with different concentration and different number of gadolinia rods was carried out. The EPR fuel assemblies were chosen in this study. The fuel assemblies are of seven different types, each assembly has unique design characteristics in terms of enrichment, number of gadolinia rods and gadolinium concentration. The calculations were achieved using MCNP6 code and with ENDF/B-VII library. A fine mesh tally was superimposed on the geometry to illustrate flux distribution in the whole assembly and its change with burnup. The variation of reactivity and isotopic composition for each region of the assembly with burnup and its influence on flux distribution was studied. The results showed that the presence of gadolinium greatly affects the power distribution. It causes some skewness in axial power shape towards the top of the assembly, the assembly which has largest number of gadolinia rods and the lowest enrichment has the largest skewness of power distribution at BOC. At EOC the flux and axial power have a double hump shape due to the buildup of gadolinium isotopes and the large decrease in reactivity with burnup.
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Gernaat SAM, von Stedingk H, Hassan M, Nilsson HP, Rodriguez-Wallberg KA, Hedayati E, Rydberg P. Cyclophosphamide exposure assessed with the biomarker phosphoramide mustard-hemoglobin in breast cancer patients: The TailorDose I study. Sci Rep 2021; 11:2707. [PMID: 33526812 PMCID: PMC7851165 DOI: 10.1038/s41598-021-81662-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 12/30/2020] [Indexed: 11/09/2022] Open
Abstract
Cyclophosphamide (CPA) dosing by body surface area (BSA, m2) has been questioned as a predictor for individual drug exposure. This study investigated phosphoramide mustard-hemoglobin (PAM-Hb, pmol g-1 Hb) as a biomarker of CPA exposure in 135 female breast cancer patients receiving CPA during three courses based on BSA: 500 mg/m2 (C500 group, n = 67) or 600 mg/m2 (C600 group, n = 68). The inter-individual difference was calculated for both groups by dividing the highest through the lowest PAM-Hb value of each course. The inter-occasion difference was calculated in percentage for each individual by dividing their PAM-Hb value through the group mean per course, and subsequently dividing this ratio of the latter through the previous course. A multivariable linear regression (MLR) was performed to identify factors that explained the variation of PAM-Hb. During the three courses, the inter-individual difference changed from 3.5 to 2.1 and the inter-occasion difference ranged between 13.3% and 11.9% in the C500 group. In the C600 group, the inter-individual difference changed from 2.7 to 2.9 and the inter-occasion difference ranged between 14.1% and 11.7%. The MLR including BSA, age, GFR, and albumin explained 17.1% of the variation of PAM-Hb and was significantly better then the model including only BSA. These factors should be considered when calculating the first dose of CPA for breast cancer patients.
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Bhatti M, Sheikholeslami M, Shahid A, Hassan M, Abbas T. Corrigendum to “Entropy generation on the interaction of nanoparticles over a stretched surface with thermal radiation” [Colloids Surf. A: Physicochem. Eng. Asp. 570 (2019) 368]. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mheich A, Dufor O, Yassine S, Kabbara A, Biraben A, Wendling F, Hassan M. HD-EEG for tracking sub-second brain dynamics during cognitive tasks. Sci Data 2021; 8:32. [PMID: 33504796 PMCID: PMC7840668 DOI: 10.1038/s41597-021-00821-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/22/2020] [Indexed: 11/09/2022] Open
Abstract
This work provides the community with high-density Electroencephalography (HD-EEG, 256 channels) datasets collected during task-free and task-related paradigms. It includes forty-three healthy participants performing visual naming and spelling tasks, visual and auditory naming tasks and a visual working memory task in addition to resting state. The HD-EEG data are furnished in the Brain Imaging Data Structure (BIDS) format. These datasets can be used to (i) track brain networks dynamics and their rapid reconfigurations at sub-second time scale in different conditions, (naming/spelling/rest) and modalities, (auditory/visual) and compare them to each other, (ii) validate several parameters involved in the methods used to estimate cortical brain networks through scalp EEG, such as the open question of optimal number of channels and number of regions of interest and (iii) allow the reproducibility of results obtained so far using HD-EEG. We hope that delivering these datasets will lead to the development of new methods that can be used to estimate brain cortical networks and to better understand the general functioning of the brain during rest and task. Data are freely available from https://openneuro.org. Measurement(s) | brain measurement • cognitive behavior trait | Technology Type(s) | electroencephalography (EEG) | Factor Type(s) | task • age • sex | Sample Characteristic - Organism | Homo sapiens |
Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.13560311
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Bening C, Alhussini K, Cristaldo RB, Madrahimov N, Radakovic D, Magyar A, Hassan M, Penov K, Leyh R. Correlation of DHEA as a Precursor for Androgens and Estrogens with Echocardiographic Function and Dimensions of the Heart. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abuowarda M, Amer M, Shamaa A, Shehab G, Abdallah A, Hassan M. A preliminary study of endoscopic diagnosis of gastric ulcer in Egyptian donkeys (Equus asinus) parasitised by Gasterophilus intestinalis (Diptera: Oestridae). BULGARIAN JOURNAL OF VETERINARY MEDICINE 2021. [DOI: 10.15547/bjvm.2320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Equine gastric ulcer syndrome (EGUS) is a communal broad problem in equines but in donkeys, the disease is a subclinical disorder which leads to economic losses. Gasterophilus intestinalis larvae are the most predominant parasitic infestation in donkeys. The present study was planned to facilitate the early and efficient diagnosis of gastric ulceration in donkeys through gastroscopic examination. The study was conducted on 120 adult Egyptian donkeys (Equus asinus) from both sexes after a one-month acclimatisation period. Gastroscopic examination was used to evaluate the presence of gastric lesions. In the majority of infested donkeys, G. intestinalis larvae were in the non-glandular part of the stomach. The prevalence of Gastrophilus larvae in animals reached 96.66%. The infestation percentage among jennets (97.5%) was slightly higher than that among jacks (96.25%). After morphological identification of the 3rd instar of larvae, all donkeys were found to be infested by G. intestinalis larvae. The histopathological examination of the affected stomach revealed severe necrosis of the gastric mucosa. Gastroscopic examination is the main diagnostic tool for examination of gastric lesions in the donkeys, so it is necessary as a routine diagnostic tool in donkeys’ examinations.
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Kabbara A, Paban V, Hassan M. The dynamic modular fingerprints of the human brain at rest. Neuroimage 2020; 227:117674. [PMID: 33359336 DOI: 10.1016/j.neuroimage.2020.117674] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 12/08/2020] [Accepted: 12/17/2020] [Indexed: 11/27/2022] Open
Abstract
The human brain is a dynamic modular network that can be decomposed into a set of modules, and its activity changes continually over time. At rest, several brain networks, known as Resting-State Networks (RSNs), emerge and cross-communicate even at sub-second temporal scale. Here, we seek to decipher the fast reshaping in spontaneous brain modularity and its relationships with RSNs. We use Electro/Magneto-Encephalography (EEG/MEG) to track the dynamics of modular brain networks, in three independent datasets (N = 568) of healthy subjects at rest. We show the presence of strikingly consistent RSNs, and a splitting phenomenon of some of these networks, especially the default mode network, visual, temporal and dorsal attentional networks. We also demonstrate that between-subjects variability in mental imagery is associated with the temporal characteristics of specific modules, particularly the visual network. Taken together, our findings show that large-scale electrophysiological networks have modularity-dependent dynamic fingerprints at rest.
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Waly A, Abd El-Fattah Y, Hassan M, El-Ghadban ELM, Abd Alla A. ENHANCING GROWTH, PRODUCTIVITY AND ESSENTIAL OIL PERCENTAGE OF THYMUS VULGARIS L. PLANT USING SEAWEEDS EXTRACT, CHITOSAN AND POTASSIUM SILICATE IN SANDY SOIL. SCIENTIFIC JOURNAL OF FLOWERS AND ORNAMENTAL PLANTS 2020; 7:549-562. [DOI: 10.21608/sjfop.2020.148056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Nasr W, Shahein N, Hassan M, Abd-Rabou N. Characterization of Soft Cheese Supplemented with Rice Bran Oil. JOURNAL OF FOOD AND DAIRY SCIENCES 2020; 11:337-341. [DOI: 10.21608/jfds.2020.160392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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ElsharkawY S, Gabal AA, Hassouna A, Mokhtar M, Hassan M. PO-0860: Hippocampal dose reduction while treating brain gliomas using 3DCRT. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00877-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hassan M, Abohashem S, Wang Y, Jones O'connor M, Alvi R, Zlotoff D, Bakar R, Osborne M, Chan A, Wirth L, Awadalla M, Addison D, Tawakol A, Neilan T. Amygdalar activity among patients with head and neck cancer predicts cerebrovascular events: a retrospective FDG PET/CT Cohort Study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Radiation therapy for head and neck cancer (HNC) associates with an increase in cerebrovascular events. Amygdalar metabolic activity (AmygA), a measure of stress-associated neurobiological activity, associates with cardiovascular events in patients without cancer. In this study, we tested whether AmygA was associated with cerebrovascular events among patients treated with radiation therapy.
Methods
The associations between AmygA (at cancer staging) and subsequent cerebrovascular events as well as inflammatory biomarkers and arterial inflammation, were tested among consecutive patients with HNC treated with radiation therapy who underwent 18F-FDG-PET/CT.
Results
Among 240 patients (59±13 years; 30% female, 48% had stage 4 disease), there were 26 events over a median follow-up period of 3 years (IQR: 1.7–5.1). AmygA at cancer staging was associated with subsequent cerebrovascular events, an effect that remained significant after adjustment for age, sex, and cerebrovascular risk factors (adjusted hazard ratio 1.47, 95% CI 1.04–2.09, P=0.031). The association persisted when the analysis was restricted to patients with no prior history of CV disease and even among those with lower predicted CV risk (P<0.001). Higher AmygA at cancer staging also associated with serum inflammatory markers and arterial inflammation (P<0.05 each).
Conclusions
Amygdalar activity, a quantifiable biomarker of stress-associated brain activity, associated with subsequent cerebrovascular events among patients with cancer treated with radiation therapy.
Funding Acknowledgement
Type of funding source: None
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Foad B, Hassan M, Takeda T. Uncertainty & sensitivity analyses for LOCA simulation of PHEBUS experiment FPT-1 using a modified SUNSET code. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2020.107575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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