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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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Nelson RL, Hassan M, Grant MD. Antibiotic prophylaxis in colorectal surgery: are oral, intravenous or both best and is mechanical bowel preparation necessary? Tech Coloproctol 2020; 24:1233-1246. [PMID: 32734477 DOI: 10.1007/s10151-020-02301-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 07/12/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND The benefit of adding oral antibiotic prophylaxis (OA) to intravenous prophylaxis (IV) in elective colorectal surgery to prevent surgical site infection (SSI) and whether the benefit of OA requires a mechanical bowel cleansing (MBP) are assessed in a systematic review. Meta-analyses compare randomized trials of IV versus IV plus OA, both with MBP; OA versus IV plus OA, both again with MBP; OA plus IV in studies randomizing patients to MBP or no MBP; and IV versus IV plus OA in patients with no MBP. METHODS MEDLINE, EMBASE, and the Cochrane Library were searched for eligible studies from 1965 to April 1, 2020. The outcome assessed was SSI, superficial and deep, but not organ space. For each included study, risk of bias was assessed using the Cochrane Risk of Bias tool version 1. For each comparison, meta-analysis was performed from data from eligible studies to obtain a summary effect and heterogeneity using RevMan. Sensitivity analyses were performed excluding studies of poor quality. Certainty of evidence was assessed using GRADE for each comparison. RESULTS Sixty-one studies published in 1971-2020 from 55 publications reporting 12,297 patients were eligible for inclusion. A total of 36 studies compared IV to OA plus IV with MBP. The risk ratio (RR) and 95% confidence interval (CI) for SSI with oral and IV vs. IV alone are 0.47, 0.40-0.56. The RR in 19 studies for IV plus OA versus OA alone is 0.48, 0.38-0.62. The RR for OA plus IV with MBP versus without MBP in 5 studies is 1.17, 0.84-1.64. The RR for OA plus IV versus IV alone when no bowel prep was used in two studies is 0.36, 0.18-0.72. RRs were similar in sensitivity analyses. The GRADE is high for the first two comparisons, moderate for the 3rd, and low for the 4th due to imprecision and heterogeneity. CONCLUSIONS Combined OA and IV is superior to either alone in preventing SSI. The certainty of evidence is such that further research is unlikely to alter this relationship when MBP is used. In randomized trials of MBP, OA plus IV shows no benefit from MBP versus no MBP. The last comparison shows in just two studies that as in the first meta-analysis, but in the absence of MBP, combined OA plus IV is also superior to IV alone.
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Nasreldin N, Ali FAZ, Abd-Elhafeez HH, Hassan M, El-Zeftawy M, Senosy W. Characterization of immunological, biochemical and inflammatory response of clinical and subclinical endometritis in ewes in the subtropics. Anim Reprod Sci 2020; 219:106541. [PMID: 32828415 DOI: 10.1016/j.anireprosci.2020.106541] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 12/13/2022]
Abstract
Pluriparus Ossimi (n = 50) ewes were used to investigate the immune profile of the affected ewes to accurately diagnose clinical and subclinical endometritis and associations with biochemical variables. Ewes were slaughtered and animals were classified into control (no fertility problems), subclinical endometritis (SCE) and clinical endometritis (CE) groups based on pre-slaughter determinations of conception failure. Serum was collected from ewes to estimate concentrations of pro-inflammatory cytokines including interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and interleukin-8 (IL-8) as well as nitric oxide (NO) concentration. The results from immunological evaluations indicated there were greater (P < 0.001) serum concentrations of IL-6, IL-8, TNF-α and NO in ewes classified with SCE and CE as compared to ewes of the control group. Furthermore, values for concentrations of TNF-α were positively correlated with IL-6 and IL-8 concentrations in ewes of the SCE and CE groups. In ewes classified with CE and SCE there were greater (P < 0.01) concentrations of blood glucose, ALT, AST, urea and creatinine than in ewes of the control group. It is concluded that serum pro-inflammatory cytokines IL-6, IL-8, and TNF-α are diagnostic markers for CE and SCE in ewes and serve as a criterion for different inflammatory complications in ewes classified as having CE or SCE.
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Wiseman O, Tanse F, Saeb-Parsy K, Atassi N, Endriss R, Kamphuis G, Pèrez Fentes D, Hassan M, Brehmer M, Osther P, Jung H, Turney B, Finch W, Burgess N, Irving S, Liatsikos E, Knoll T, Cauni V. The efficacy and safety of the EMS Lithoclast Trilogy: A European multicenter prospective study on behalf of ESUT. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33852-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Imam M, Helal M, Hassan M, Hassan E, Essam S. AB0762 METABOLIC SYNDROME IN EGYPTIAN PSORIATIC ARTHRITIS PATIENTS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Psoriatic arthritis (PsA) is a chronic inflammatory arthritis affecting 20:30% of patients with skin Psoriasis (PsO). It is strongly associated with obesity, particularly excess visceral adiposity, which leads to insulin resistance, hyperglycemia, dyslipidemia, and hypertension (HTN).All the previous findings are grouped in Metabolic Syndrome (MetS) which increase the risk of development of Type 2 diabetes mellitus (T2DM) by five folds and cardiovascular disease (CVD) by two folds.Objectives:The aim of this work was to define those who fulfill MetS criteria in PsA patients thus of greater risk to develop CVD and T2DM.Methods:Fifty PsA patients diagnosed according to the CASPAR criteria and 50 matched healthy controls were included in this study.All patients were subjected to thorough clinical evaluation of the musculoskeletal system. The disease activity was assessed by DAPSA and BASDAI. Skin severity was assessed by the PASI. Disability assessment was done by the HAQ-DI. Laboratory investigations included: CRP, uric acid and diabetic profile (includingHOMA-IR) and lipid profile in patients and control subjects.Subjects were defined as having MetS according to International Diabetes Federation (IDF) criteria:Abdominal obesity was measured by Waist circumference (WC) for Egyptian cutoffs values (WC>100.5 cm in men and >96.25 cm in women).The subjects must have central obesity to identify MetS plus any two of the following four factors:1) Raised triglycerides level (TG) ≥ 150 mg/dL or on specific treatment.2) Reduced levels of high-density lipoprotein cholesterol (HDL <40 mg/dL in males and <50mg/dL in females or on specific treatment.3) HTN: (systolic: ≥130mm H g or diastolic: ≥ 85 mm Hg) or on treatment for HTN.4) Raised fasting glucose levels (≥ 100 mg/dL), or previously diagnosed T2DM.Results:Metabolic syndrome was significantly higher among PsA patients than control group (42% Vs 16% respectively).Regarding frequency of MetS components, obesity was the highest component among PsA patients (62%) as illustrated in Figure 1.CRP mean level was significantly higher in PsA patients compared to control group with p <0.001*. CRP serum level showed a positive significant correlation with DAPSA score and HOMA-IR (P= 0.031, 0.002 respectively)Correlations between MetS components and (disease activity, skin severity and physical function) are shown in Table 1.Conclusion:1-There is high frequency of MetS in PsA patients compared to control group.2- Obesity and DMT2 were the most common components of MetS.References:[1]Eder L, Harvey P, Chandran V, Rosen CF, Dutz J, Elder JT, et al. Gaps in diagnosis and treatment of cardiovascular risk factors in patients with psoriatic disease: an international multicenter study. The Journal of rheumatology. 2018:jrheum. 170379.[2]Alberti KGMM, Zimmet P, Shaw J. Metabolic syndrome—a new world-wide definition. A consensus statement from the international diabetes federation. Diabetic medicine. 2006;23(5):469-80.Psoriatic ArthritisMetabolic syndromeWCBMITGHDLFBSHOMA-IRSystolic BPDiastolic BPDAPSArs-0.2330.0810.086-0.1160.2630.3870.136-0.170P0.3080.7280.7100.6160.2500.0830.5570.462BASDAIrs0.798*0.1520.060-0.110-0.424-0.2940.168-0.027P<0.001*0.5090.7980.6360.0550.1960.4670.906PASIrs0.435*0.2260.363-0.521*-0.276-0.253-0.054-0.060P0.049*0.3240.1060.015*0.2270.2680.8180.795HAQ-DIrs0.1890.1760.168-0.286-0.240-0.184-0.343-0.276P0.4130.4450.4660.2090.2950.4240.1280.225Disclosure of Interests:None declared
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El-Zeftawy M, Mahmoud GB, Hassan M. Impact of thermal stress exposure on seminal quality, antioxidant defence system, TNF-α and TIMP-3 in Ossimi ram. Reprod Domest Anim 2020; 55:870-881. [PMID: 32386243 DOI: 10.1111/rda.13697] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 01/20/2023]
Abstract
Heat stress (HS) occupies huge importance nowadays as it leads to severe economic losses especially in livestock. Preserving sheep against HS is one of the governmental scopes where it represents huge percentage of global ruminant. The present research was conducted to study semen quality, some stress and inflammatory markers in Ossimi rams under both hot and mild climatic conditions. The current study was conducted on selected 46 ram samples divided into two groups during summer and winter. Semen analysis, testosterone (TES), cortisol (COR) and blood glucose (BG) levels, and lipid and protein profiles were done. Concentrations of tumour necrosis factor alpha (TNF-α), tissue inhibitor of metalloproteinase-3 (TIMP-3), nitric oxide (NO), malondialdehyde (MDA) and reduced glutathione (GSH) and specific activity of glutathione peroxidase (GPx) and superoxide dismutase (SOD) were assessed. The results in summer compared to winter revealed significant elevation of total defects and number of dead sperms; however, there was reduction in sperm total motility and concentration and external epididymal tail duct diameter. Histological study of epididymal tail lumen exhibited azoospermia. Further, TES, TIMP-3 and GSH levels were decreased and COR, TNF-α, NO and MDA were raised. Specific activities of GPx and SOD were also declined. Additionally, there was a significant increase in concentrations of BG and lipid profiles except high-density lipoprotein. Our data concluded that there were new insights into TNF-α and TIMP-3 as biomarkers can be used in diagnosis of sheep suffering from HS, but further studies are recommended to do in future work about such aspect.
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Jafferi S, Awais G, Naeem R, Syed JG, Ali M, Afridi H, Hassan M, Rasul S. Demographics and Mortality Rates of Surgical Emergencies Treated at the Casualty Operation Theater: A Six-month Retrospective Analysis. Cureus 2020; 12:e7658. [PMID: 32411559 PMCID: PMC7217585 DOI: 10.7759/cureus.7658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction Emergencies such as appendicitis, peritonitis, road traffic accidents and gunshots require immediate surgical intervention. Patients are first resuscitated at the emergency department and then shifted to the casualty operation theater (COT). COT is a state-of-the-art operation theater that is open 24/7 and ready to deal with any surgical crisis. Once surgery is performed, the patients are admitted to the surgical ward for post-operative care. Jinnah Postgraduate Medical Centre (JPMC) is the largest tertiary care hospital in Karachi. There is very limited data on the cases that are dealt with on regular basis at the COT in JPMC. Here we break the mold and analyze the various aspects of surgical emergencies treated at the COT over the course of last six months. Objectives To evaluate the demographics and mortality rates of emergencies treated at the COT in the last six months. Methods This was a retrospective study, held for six months (July 1st 2019 to December 31st 2019). Data was obtained from the Records and Administration section, Surgical Unit IV (ward 21), Jinnah Postgraduate Medical Centre. Results Three hundred and fifty-five patients were inducted into the study, predominantly male. Majority (71.54%) of the referrals were made from within the city. The mean age of the patients was 48.57 ± 14.92 years. Appendicitis was the most common emergency treated at the COT. The overall mortality rate was 23.94%. Peritonitis and road traffic accidents contributed significantly to the mortality rate. Conclusion Surgical emergencies treated at the COT have a high mortality rate at one week. Prompt recognition, early referrals and intervention can help reduce mortality in the future.
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Hassan M, Omotoso B, Omosule B, Akande B, Akintomide A, Bamikefa T, Aremu O, Oguntade H, Okunola O, Sanusi A, Arogundade F. SUN-083 ELECTROCARDIOGRAPHIC INDICES AND PERIPHERAL VASCULAR DISEASE AMONG PREDIALYTIC CKD PATIENTS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Alshamsi I, Hassan M, Saleh A, Al Mutawa K, Khater E, Luqman N, Richards N. SUN-207 MAGNESIUM LEVELS IN DIABETIC PATIENTS WITH END STAGE RENAL DISEASE (ESRD) IN ONE CENTER IN THE UNITED ARAB EMIRATES (UAE). Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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BAMIKEFA T, Adelakun A, Adefidipe A, Omosule B, Ezengowa R, Omotoso B, Hassan M, Okunola O, Sanusi A, Arogundade F. SUN-395 CLINICO-PATHOLOGIC PATTERN OF ADULT GLOMERULONEPHRITIDES IN NIGERIA: A SINGLE CENTRE STUDY. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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ALMUTAWA K, Alshamsi I, Khater E, Hassan M, Saleh A, Richards N, Luqman N. SUN-206 MAGNESIUM AND MBD IN DIALYSIS POPULATION IN UNITED ARAB EMIRATES (UAE). Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Elnazer W, Mahedy A, Hassan M, Elraggal MD M, Elrggal M, ZAITOUN M. SUN-215 SAFETY OF DENOSUMAB IN HEMODIALYSIS PATIENTS, A RETROSPECTIVE COHORT STUDY. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Rizkallah J, Amoud H, Wendling F, Hassan M. Effect of connectivity measures on the identification of brain functional core network at rest. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2019:6426-6429. [PMID: 31947313 DOI: 10.1109/embc.2019.8857331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Magneto/Electro-encephalography (M/EEG) source connectivity is an emergent tool to identify brain networks with high time/space resolution. Here, we aim to identify the brain core network (s-core decomposition) using dense-EEG. We also evaluate the effect of the functional connectivity methods used and more precisely the effect of the correction for the so-called source leakage problem. Two connectivity measures were evaluated: the phase locking value (PLV) and phase lag index (PLI) that supposed to deal with the leakage problem by removing the zero-lag connections. Both methods were evaluated on resting state dense-EEG signals recorded from 19 healthy participants. Core networks obtained by each method was compared to those computed using fMRI from 487 healthy participants at rest (from the Human Connectome Project - HCP). The correlation between networks obtained by EEG and fMRI was used as performance criterion. Results show that PLV networks are closer to fMRI networks with significantly higher correlation values with fMRI networks, than PLI networks. Results suggest caution when selecting the functional connectivity methods and mainly methods that remove the zero-lag connections as it can severely affect the network characteristics. The choice of functional connectivity measure is indeed crucial not only in cognitive neuroscience but also in clinical neuroscience.
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Hassan M, Nicholson T, Taylor L, Howell T, Hadden R, Syred K, Riordan R, Corcoran J, Daneshvar C. Focused neck ultrasound and lymph node sampling by respiratory physicians can provide a rapid diagnosis in a poor prognostic patient group with suspected lung cancer. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30060-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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McDill H, Hassan M, Corcoran J, Howell T, Daneshvar C. The impact of anticoagulation and antiplatelet drugs on the National Optimal Lung Cancer Pathway. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30082-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kamaruzzaman M, Abdullah S, Hasan H, Hassan M, Othman A, Idris M. Characterisation of Pb-resistant plant growth-promoting rhizobacteria (PGPR) from Scirpus grossus. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2019.101456] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Abdelmottaleb WA, Nadar S, Daar S, Al-Rahbi S, Hassan M. P902 Abnormal diastolic function in patients with transfusion dependant thalassemia major. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.540] [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
Aim and Background
Cardiac complications secondary to iron deposition are the commonest cause of death in patients with beta thalassemia major (TM) and can cause various abnormalities. The aim of this study was to assess the diastolic function in patients with transfusion dependant TM and compare with normal controls.
Methods
This was a retrospective study involving patients with transfusion dependant TM , on chelation therapy who had a MRI T2* and a transthoracic echocardiogram during the preceeding 6 months. We compared the findings with those from normal controls. We also correlated the echo findings with the MRI T2* values.
Results
Patients with TM (n = 92, 45% male, mean age 26+ 6 years), with median MRI T2* of 32 (18-39) and normal LV function had signs of diastolic dysfunction as compared to normal controls (41% male, mean age 25 + 6 years) with E/E’ at 6.6 + 1.6 vs 5.5 +1.2 (p < 0.001) and altered pulmonary vein s/d ratio (0.88 + 0.30 vs 1.04 +0.42 for controls, p = 0.02)even in the presence of normal LV systolic function (Ejection fraction 61+ 7% vs 3.4% for controls). There was no difference in the other dimensions. The E/A ratio also corelated well with the MRI T2* (spearmans correlation rho -0.226 p 0.04). There were no other significant correlations between either the MRI T2* or myocardial Iron concentration and any of the other echo parameters
Conclusion
In patients with TM signs of diastolic dysfunction appear before LV systolic dysfunction and may be used to monitor these patients in absence of MRI facilities.
Echo findings in thalassemia Controls (n= 53) Thalassemia Major (n = 92) P value Sex Male Female 22 (41%) 31(59%) 42(45%) 50(55%) 0.5 Mitral E 0.84 + 0.16 1.01 + 0.16 <0.001 Mitral A 0.47 +0.11 0.55 +0.16 <0.001 E/A 1.85 +0.52 1.98 + 0.71 0.24 TDseptal 13.1 + 2.6 13.2 + 3.4 0.9 TDlateral 17.1+ 3.3 17.3 +4.1 0.7 E/E’ 5.5 +1.2 6.6 + 1.6 <0.001 PVs/d 1.04 + 0.41 0.88 +0.30 0.02 TD= tissue doppler; PV- pulmonary vein
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Jiang X, Xu Y, Geng Y, Wang C, Hassan M, Meng L, Lu H. Entrainment of particles and gas induced by draft fan over the particles bed. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Madrahimov N, Alhussini K, Sales V, Radakovic D, Penov K, Benitez Cristaldo R, Hoffmann J, Hassan M, Leyh R, Bening C. First-Ever Built Magnetically Driven Micropump Using 3D Technology for VAD and ECMO Studies in a Mouse Model. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Alhussini K, Sales V, Benitez Cristaldo R, Penov K, Madrahimov N, Radakovic D, Magyar A, Hassan M, Leyh R, Bening C. Comparison of Half Relaxation Time and Peak Force of Intact Muscle Fibers of Elective CABG Patients with Diastolic Dysfunction Grade I–III. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Waly A, Abd El-Fattah Y, Hassan M, El-Ghadban E, Abd Alla A. EFFECT OF FOLIAR SPRAYING WITH SEAWEEDS EXTRACT, CHITOSAN AND POTASSIUM SILICATE ON ROSMARINUS OFFICINALIS L. PLANTS IN SANDY SOIL. SCIENTIFIC JOURNAL OF FLOWERS AND ORNAMENTAL PLANTS 2019; 6:191-209. [DOI: 10.21608/sjfop.2019.92322] [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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Lato T, Mohany A, Hassan M. A passive damping device for suppressing acoustic pressure pulsations: The infinity tube. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2019; 146:4534. [PMID: 31893740 DOI: 10.1121/1.5139886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Acoustic pressure pulsations in piping systems can cause detrimental damage and failure of industrial components. Both the acoustic resonance and the traveling wave phenomena are of concern for industrial piping systems and there is a need to study passive damping devices and their implementation into these systems. However, there is a challenge associated with manufacturing and installation of such devices as they may be cumbersome. Therefore, the infinity tube (IT) damping device has been presented here to provide a simplified device geometry which can be easily manufactured and implemented into piping systems. A theoretical equation for the transmission loss spectra of the IT device and the frequencies of resonance have been derived as a tool for designers. Additionally, the experimental investigation has shown a considerable increase in acoustic attenuation in comparison to the conventional Herschel-Quincke device due to the significantly shorter length which the IT device can be constructed from. Acoustic pressure and phase angle measurements have elucidated that the fundamental acoustic mode of an open-open pipe can be formed within the IT device. Moreover, a parametric study is presented which has clarified practical considerations required for implementation of the IT device into piping systems for suppressing pressure pulsation.
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Varvaro G, Laureti S, Peddis D, Hassan M, Barucca G, Mengucci P, Gerardino A, Giovine E, Lik O, Nissen D, Albrecht M. Co/Pd-Based synthetic antiferromagnetic thin films on Au/resist underlayers: towards biomedical applications. NANOSCALE 2019; 11:21891-21899. [PMID: 31701115 DOI: 10.1039/c9nr06866j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thin film stacks consisting of multiple repeats M of synthetic antiferromagnetic (SAF) [Co/Pd]N/Ru/[Co/Pd]N units with perpendicular magnetic anisotropy were explored as potential starting materials to fabricate free-standing micro/nanodisks, which represent a promising candidate system for theranostic applications. The films were directly grown on a sacrificial resist layer spin-coated on SiOx/Si(100) substrates, required for the preparation of free-standing disks after its dissolution. Furthermore, the film stack was sandwiched between two Au layers to allow further bio-functionalization. For M ≤ 5, the samples fulfill all the key criteria mandatory for biomedical applications, i.e., zero remanence, zero field susceptibility at small fields and sharp switching to saturation, together with the ability to vary the total magnetic moment at saturation by changing the number of repetitions of the multi-stack. Moreover, the samples show strong perpendicular magnetic anisotropy, which is required for applications relying on the transduction of a mechanical force through the micro/nano-disks under a magnetic field, such as the mechanical cell disruption, which is nowadays considered a promising alternative to the more investigated magnetic hyperthermia approach for cancer treatment. In a further step, SAF microdisks were prepared from the continuous multi-stacks by combining electron beam lithography and Ar ion milling, revealing similar magnetic properties as compared to the continuous films.
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