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Van Melle J, Roos-Hesselink J, Bansal M, Kamp O, Meshaal M, Pudich J, Reskovic Luksic V, Rodriguez-Alvarez R, Sadeghpour A, Separovic Hanzevacki J, Sow R, Timoteo AT, Laroche C, Lancellotti P, Habib G. Infective endocarditis in adult patients with congenital heart disease: results from the ESC EORP EURO-ENDO registry. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Congenital Heart Disease (CHD) predisposes to Infective Endocarditis (IE)
Purpose
To characterize and to determine the prognosis of IE in this specific population.
Methods
The ESC EORP EURO-ENDO study is a prospective international study in patients (n=3111) diagnosed with IE. In this pre-specified ancillary analysis, we aimed to describe adult patients with CHD (n=365, 11·7%) and compare them with patients without CHD (non-CHD, n=2746) in terms of baseline characteristics and 1-year outcome.
Results
CHD patients (73% men, age 44·8±16·6 years) were younger and had less comorbidities. Of the CHD patients, 14% had a dental procedure in the 6 months before hospitalization versus 7% in non-CHD patients (p<0·001) and more often positive blood cultures for Streptococcus viridans (16·4% vs 8·8%, p<0·001). As in non-CHD patients, IE affected most often the left-sided valves. For CHD patients, in-hospital mortality was 9·0% vs 18·1% in non-CHD patients (p<0·001), and also 1-year outcome was more favourable (log-rank for all-cause mortality p<0·0001), even after adjustment for age (Hazard Ratio (HR) 0·61; 95% CI 0·45–0·81). Within the CHD population, multivariable Cox regression revealed the following predictors for mortality: fistula (HR 6·97), cerebral embolus (HR 4·64), renal insufficiency (HR 3·44), Staphylococcus aureus as causative agent (HR 2·06) and failure to undertake surgery when indicated (HR 5·93).
Conclusion
CHD patients with IE have better outcome in terms of all-cause mortality. The observed high incidence of dental procedures prior to IE fuels the discussion about the need for antibiotic prophylaxis.
Funding Acknowledgement
Type of funding sources: Other. Main funding source(s): Since the start of EORP, the following companies have supported the program: Abbott Vascular Int. (2011–2021), Amgen Cardiovascular (2009–2018), AstraZeneca (2014–2021), Bayer AG (2009–2018), Boehringer Ingelheim (2009–2019), Boston Scientific (2009–2012), The Bristol Myers Squibb and Pfizer Alliance (2011–2019), Daiichi Sankyo Europe GmbH (2011–2020), The Alliance Daiichi Sankyo Europe GmbH and Eli Lilly and Company (2014–2017), Edwards (2016–2019), Gedeon Richter Plc. (2014–2016), Menarini Int. Op. (2009–2012), MSD-Merck & Co. (2011–2014), Novartis Pharma AG (2014–2020), ResMed (2014–2016), Sanofi (2009–2011), Servier (2009–2021), Vifor (2019–2022). Survival CHD vs non-CHD patients
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Affiliation(s)
- J Van Melle
- University Medical Center Groningen, Cardiology, Groningen, Netherlands (The)
| | - J Roos-Hesselink
- Erasmus University Medical Centre, Cardiology, Rotterdam, Netherlands (The)
| | - M Bansal
- Medanta Heart Institute, Cardiology, Gurgaon, India
| | - O Kamp
- Amsterdam UMC - Location VUmc, Cardiology, Amsterdam, Netherlands (The)
| | - M Meshaal
- Kasr Alainy school of medicine, Cardiology, Cairo, Egypt
| | - J Pudich
- University Hospital Ostrava, Cardiovascular Diseases, Ostrava, Czechia
| | - V Reskovic Luksic
- University Hospital Centre Zagreb, Cardiovascular Diseases, Zagreb, Croatia
| | | | - A Sadeghpour
- Rajaie Cardiovascular Medical & Research Center, Echocardiography, Tehran, Iran (Islamic Republic of)
| | | | - R Sow
- Hospital Center of Luxembourg, Cardiology, Luxembourg, Luxembourg
| | - A T Timoteo
- Centro Hospitalar Universitário Lisboa Norte, Cardiology, Lisbon, Portugal
| | - C Laroche
- European Society of Cardiology, EURObservational Research Programme, Sophia-Antipolis, France
| | - P Lancellotti
- University Hospital of Liege (CHU), Cardiology, Liege, Belgium
| | - G Habib
- Hospital La Timone of Marseille, Cardiology, Marseille, France
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Sadeghpour A, Maleki M, Boodagh S, Behjati M, Rezvani L, Ghadrdoost B, Noohi F, Bakhshandeh H, Moradnejad P, Kamali M, Alizadehasl A, Alireza Ghavidel A, Hosseini S, Pasha H. Impact of the Iranian Registry of Infective Endocarditis (IRIE) and multidisciplinary team approach on patient management. Acta Cardiol 2021; 76:838-841. [PMID: 32589112 DOI: 10.1080/00015385.2020.1781423] [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] [Indexed: 10/24/2022]
Abstract
BACKGROUNDS The last 30 years have witnessed major improvements in understanding of all aspects of infective endocarditis (IE). The Iranian Registry of Infective Endocarditis (IRIE) was formed to address epidemiological aspects of IE vis-à-vis its main pathogens and underlying heart diseases over a 12-year period. Indeed, a multidisciplinary team (MDT) for IE was developed alongside. METHODS In a longitudinal observational study, data of adult patients with definite or possible IE based on modified Duke criteria were collected from 2007 to 2016 in our tertiary centre, Iran. From 2016 until 2019, we run a prospective observational study using formation of an IE MDT to provide better patient management and compared data before and after this. RESULTS Totally, 645 patients with mean age of 48 ± 17 years were enrolled. Data of 445 and 200 patients were compared before and after IRIE and MDT formation, respectively. We found significantly reduced type and number of applied antibiotics (p = 0.04) and higher rate of positive blood culture (p = 0.001). Hospital length of stay increased significantly after formation of the IRIE and IE MDT (p = 0.02). The rate of heart failure, new abscess formation and cerebral emboli were significantly decreased after IRIE and IE MDT (p < 0.001) and consequently in-hospital mortality reduced significantly (p = 0.05). CONCLUSION Developing national registries and MDTs has potential to enhance patient management and reduce IE burden. Our results demonstrated that establishment of the Iranian IRIE and IE MDT conferred better diagnoses, standardised treatments and significantly reduced cardiac and extra cardiac morbidity.
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Affiliation(s)
- A. Sadeghpour
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - M. Maleki
- Cardiovascular Intervention Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sh Boodagh
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - M. Behjati
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - L. Rezvani
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - B. Ghadrdoost
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - F. Noohi
- Cardiovascular Intervention Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - H. Bakhshandeh
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - P. Moradnejad
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - M. Kamali
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - A. Alizadehasl
- Cardio-Oncology Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - A. Alireza Ghavidel
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - S. Hosseini
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - H. Pasha
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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Sadeghpour A, Pourafkari L, Nader ND. Mitral valve 'kissing lesion' in Libman-Sacks endocarditis. QJM 2021; 114:338. [PMID: 33401301 DOI: 10.1093/qjmed/hcaa342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Sadeghpour
- Echocardiography Research Center, Rajaie Cardiovascular Medical & Research Center, Iran University of Medical Sciences, Tehran, Iran, Duke Cardiovascular MR Center, Durham, NC, USA
| | | | - N D Nader
- Department of Anesthesiology, University at Buffalo, UB Gateway Building, 77 Goodell Street, Suite #550 Buffalo, NY 14203, USA
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4
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Sadeghipour P, Shafe O, Moosavi J, Basiri H, Abdi S, Firouzi A, Khajali Z, Saedi S, Mohebbi B, Maleki M, Pouraliakbar H, Samiei N, Sadeghpour A, Alemzadeh M, Shahdi S. Comparison between cheatham-platinum stent and self-expandable uncovered nitinol stent in patients with coarctation of aorta – a randomized controlled trial. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Endovascular treatment is considered the main therapeutic approach for native coarctation of aorta (CoA) in adult patients. Balloon-expandable stents (BE) have been introduced as the primary choice for coarctoplasty. However during the recent years, self-expandable (SE) stents with acceptable radial force have been suggested as an alternative. Still, no randomized controlled (RCT) trials have compared the efficacy and safety of both strategies.
Methods
The present study is a prospective, single center, parallel-group, open-label RCT on patients with native CoA (Figure). Patients were randomized into Bare Cheatham-Platinum Stents and Uncovered Nitinol Stent (SE). All patients were scheduled to be followed in 1-, 6-, 12-month and 36-month intervals. The present report, focuses on the one-year outcome of the study.
Results
Of 101 patients with native CoA referred to our center, 93 patients have been randomized into BE- (47 patients) and SE-arm (46 patients). One year follow up is scheduled to be completed on March 2020. In the preliminary analysis of 62 patients, 1 intraprocedural stent migration has occurred in each group. No aortic perforation was detected in the study. Vascular access site complications were similar between the two groups (3 (6.3%) in BE versus 1 (2.1%) in SE, p value= 0.432). One nonfatal stroke occurred in BE group. No mortality or bailout surgical repair happened in one year study in the two groups. One patient with re-coarctations were detected during one year follow up in each of the groups (p value=0.210). No aortic pseudoaneurysm or aneurysmal formation were observed in 12-month follow up aortic CT angiography.
Conclusion
The preliminary results showed no significant difference in efficacy and safety of both treatment modalities. The final result is pending.
Study Flow Chart
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- P Sadeghipour
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - O Shafe
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - J Moosavi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - H.A Basiri
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - S Abdi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - A Firouzi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - Z Khajali
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - S Saedi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - B Mohebbi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - M Maleki
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - H.R Pouraliakbar
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - N Samiei
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - A Sadeghpour
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - M.J Alemzadeh
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - S Shahdi
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
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5
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Hosseini L, Sadeghpour A, Maleki M, Alizadehasl A, Rezaeian N, Zadehbagheri F, Bakhshandeh H, Hosseini S. 3D right ventricular ejection fraction and longitudinal strain are independent predictors of major adverse cardiovascular events in patients with rrhythmogenic right ventricular cardiomyopathy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Evaluation of right ventricular (RV) function is essential in the follow up of patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). Role of advance echocardiography including 3D transthoracic echocardiography (3DTTE) for evaluation of 3D RV function and RV longitudinal strain in predicting prognosis in ARVC patients, has not been well investigated.
Purpose
We aimed to evaluate 3DTTE parameters in predicting major advance cardiovascular events (MACE) defined as ventricular arrhythmia, cardiac hospitalization, heart transplantation, and death in ARVC patients.
Methods
Forty-eight definite ARVC subjects based on the 2010 Task force criteria were evaluated with standard 2D transthoracic echocardiography (2DTTE) and 3DTTE. Patients with poor image quality were excluded. RV function was evaluated by 2D and 3D TTE including: fractional area change (FAC), RV global and free wall longitudinal strain (RV2DGLS and RV2DFWLS) and 3D RV ejection fraction (RV3DEF), RV global and free wall longitudinal strain (RV3DGLS, and RV3DFWLS). The patients were followed up for a median period of 12 months (6–18 months) to record MACE.
Results
Forty-eight patients with mean age =38.5±14 years; 79.2% male, and mean RV3DEF =30.33%, were included. During the mean follow up 12 months, 12 patients (25%, with mean RV3DEF = 24.8±9%) experienced MACE whereas mean RV3EF in patient without any cardiovascular events during follow up was 34.21±9%. The most common causes of hospitalization were arrhythmia, right-sided heart failure, and RV clot as the following: Ventricular arrhythmia in 7 patients (14.6%, with mean RV3DEF = 29.01±8.82%), RV clot in 2 cases (4.2%, with mean RV3DEF = 20.2%), right-sided heart failure in 3 patients (6.3%, with mean RV3DEF = 16.83±3.6%) that 2 of them (2.1%, with mean RV3DEF = 14.58±0.63) underwent heart transplantation.
Logistic regression analysis revealed RV3DTTE (p-value = 0.03, OR=0.90, CI: 0.82–0.99), RV3DGLS (p-value = 0.05, OR=1.27, CI: 0.99–1.61) and RV3DFWLS (p-value = 0.01, OR=1.29, CI: 1.05–1.59), predicted cardiac adverse events, but there were no significant association between RV2DGLS, RV2DEWLS and FAC with MACE.
Conclusion
RV3DEF, RV3DGLS, and RV3DFWLS were powerful predictors of morbidity and mortality and can be useful as a valuable method in the prediction of major cardiovascular complications in ARVC patients.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- L Hosseini
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - A Sadeghpour
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - M Maleki
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - A Alizadehasl
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - N Rezaeian
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - F Zadehbagheri
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - H Bakhshandeh
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
| | - S Hosseini
- Rajaie Cardiovascular Medical & Research Center, Tehran, Iran (Islamic Republic of)
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Sadeghpour A, Pourafkari L, Nader ND. Reply to: Constrictive pericarditis: to operate or not to operate. QJM 2019; 112:717. [PMID: 30657962 DOI: 10.1093/qjmed/hcz011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Sadeghpour
- Echocardiography Research Center, Shaheed Rajaei Cardiovascular Medical and Research Center, Vali-e-Asr Ave, Tehran, Postal Code, Iran
| | - L Pourafkari
- Echocardiography Research Center, Shaheed Rajaei Cardiovascular Medical and Research Center, Vali-e-Asr Ave, Tehran, Postal Code, Iran
- Department of Anesthesiology, University at Buffalo, 77 Goodell Street, Suite #550, Buffalo, NY, USA
| | - N D Nader
- Department of Anesthesiology, University at Buffalo, 77 Goodell Street, Suite #550, Buffalo, NY, USA
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7
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Affiliation(s)
- A Sadeghpour
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Vali-asr Street, Tehran, Iran
| | - L Pourafkari
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Vali-asr Street, Tehran, Iran
- Department of Anesthesiology, University at Buffalo, Buffalo, NY, USA
| | - N D Nader
- Department of Anesthesiology, University at Buffalo, Buffalo, NY, USA
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8
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Sadeghpour A, Zeng Z, Ji H, Dehdari Ebrahimi N, Bertozzi AL, Ju YS. Water vapor capturing using an array of traveling liquid beads for desalination and water treatment. Sci Adv 2019; 5:eaav7662. [PMID: 30993204 PMCID: PMC6461458 DOI: 10.1126/sciadv.aav7662] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 02/20/2019] [Indexed: 06/09/2023]
Abstract
Growing concern over the scarcity of freshwater motivates the development of compact and economic vapor capture methods for distributed thermal desalination or harvesting of water. We report a study of water vapor condensation on cold liquid beads traveling down a massive array of vertical cotton threads that act as pseudo-superhydrophilic surfaces. These liquid beads form through intrinsic flow instability and offer localized high-curvature surfaces that enhance vapor diffusion toward the liquid surface, a critical rate-limiting step. As the liquid flow rate increases, the bead spacing decreases, whereas the bead size and speed stay nearly constant. The resulting increase in the spatial bead density leads to mass transfer conductances and hence condensation rates per volume that are almost three times higher than the best reported values. Parallel and contiguous gas flow paths also result in a substantial reduction in gas pressure drop and hence electric fan power consumption.
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Affiliation(s)
- A. Sadeghpour
- Mechanical and Aerospace Engineering Department, University of California–Los Angeles, Los Angeles, CA 90095, USA
| | - Z. Zeng
- Mechanical and Aerospace Engineering Department, University of California–Los Angeles, Los Angeles, CA 90095, USA
| | - H. Ji
- Department of Mathematics, University of California–Los Angeles, Los Angeles, CA 90095, USA
| | - N. Dehdari Ebrahimi
- Mechanical and Aerospace Engineering Department, University of California–Los Angeles, Los Angeles, CA 90095, USA
| | - A. L. Bertozzi
- Mechanical and Aerospace Engineering Department, University of California–Los Angeles, Los Angeles, CA 90095, USA
- Department of Mathematics, University of California–Los Angeles, Los Angeles, CA 90095, USA
| | - Y. S. Ju
- Mechanical and Aerospace Engineering Department, University of California–Los Angeles, Los Angeles, CA 90095, USA
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9
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Morel A, Domaschke S, Urundolil Kumaran V, Alexeev D, Sadeghpour A, Ramakrishna S, Ferguson S, Rossi R, Mazza E, Ehret A, Fortunato G. Correlating diameter, mechanical and structural properties of poly(l-lactide) fibres from needleless electrospinning. Acta Biomater 2018; 81:169-183. [PMID: 30273744 DOI: 10.1016/j.actbio.2018.09.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/16/2018] [Accepted: 09/27/2018] [Indexed: 10/28/2022]
Abstract
The development and application of nanofibres requires a thorough understanding of the mechanical properties on a single fibre level including respective modelling tools for precise fibre analysis. This work presents a mechanical and morphological study of poly-l-lactide nanofibres developed by needleless electrospinning. Atomic force microscopy (AFM) and micromechanical testing (MMT) were used to characterise the mechanical response of the fibres within a diameter range of 200-1400 nm. Young's moduli E determined by means of both methods are in sound agreement and show a strong increase for thinner fibres below a critical diameter of 800 nm. Similar increasing trends for yield stress and hardening modulus were measured by MMT. Finite element analyses show that the common practice of modelling three-point bending tests with either double supported or double clamped beams is prone to significant bias in the determined elastic properties, and that the latter is a good approximation only for small diameters. Therefore, an analytical formula based on intermediate boundary conditions is proposed that is valid for the whole tested range of fibre diameters, providing a consistently low error in axial Young's modulus below 10%. The analysis of fibre morphology by differential scanning calorimetry and 2D wide-angle X-ray scattering revealed increasing polymer chains alignment in the amorphous phase and higher crystallinity of fibres for decreasing diameter. The combination of these observations with the mechanical characterisation suggests a linear relationship between Young's modulus and both crystallinity and molecular orientation in the amorphous phase. STATEMENT OF SIGNIFICANCE: Fibrous membranes have rapidly growing use in various applications, each of which comes with specific property requirements. However, the development and production of nanofibre membranes with dedicated mechanical properties is challenging, in particular with techniques suitable for industrial scales such as needleless electrospinning. It is therefore a key step to understand the mechanical and structural characteristics of single nanofibres developed in this process, and to this end, the present work presents changes of internal fibre structure and mechanical properties with diameter, based on dedicated models. Special attention was given to the commonly used models for analyzing Young's modulus of single nanofibers in three-point bending tests, which are shown to be prone to large errors, and an improved robust approach is proposed.
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Mihaila S, Cucchini U, Marzaro A, Muraru D, Andras K, Altiok E, Vinereanu D, Sadeghpour A, Alizadehasl A, Badano L, Becker M. P1324Fully automated measurements of left atrial volume are highly feasible and accurate compared to expert manual measurements: a comparative multi-center study using a novel automated analysis algorithm. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Esmaeili R, Sadeghpour A, Darbandi-Azar A, Majidzadeh-A K, Vajhi A, Sadeghizadeh M. Echocardiographic assessment of myocardial infarction: comparison of a rat model in two strains. Iran J Vet Res 2017; 18:30-35. [PMID: 28588630 PMCID: PMC5454576] [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] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 07/25/2016] [Accepted: 10/09/2016] [Indexed: 06/07/2023]
Abstract
The purpose of this study was to induce myocardial infarction (MI) and compare the echocardiographic parameters and mortality ratio of Lewis inbred and Wistar outbred strain before and after the procedure to help choose the best one for MI studies. In this study MI was induced in 46 Lewis and 34 Wistar by occlusion of left anterior descending artery (LAD). Doppler, two-dimensional (2-D) and 2-D guided M-mode images were recorded from parasternal long-axis and parasternal short-axis and apical four-chamber views. The following parameters were acquired. Interventricular septum diastolic and systolic dimension (IVSd, s), diastolic and systolic left ventricular internal diameter (LVIDd, s), diastolic and systolic left ventricular posterior wall dimension (LVPWd, s), ejection fraction (EF), and fractional shortening (FS). The significant changes were observed in systolic IVS, LVID and EF and FS before and after MI and no significant difference was detected between Lewis and Wistar. The high mortality rate of 51% was seen in the procedure, including anesthesia in Lewis compared to 34% in Wistar. As a conclusion the echocardiographic parameters of these two strains were similar, but according to mortality rate and more cardiac anatomic variation in Lewis rats, Wistar is better for MI studies.
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Affiliation(s)
- R. Esmaeili
- Ph.D. Student in Genetics, Department of Genetics, School of Biological Sciences, Tarbiat Modares University, Tehran, Iran
- Cancer Genetics Department, Breast Cancer Research Center (BCRC), (ACECR), Tehran, Iran
| | - A. Sadeghpour
- Echocardiography Research Center, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - A. Darbandi-Azar
- DVM, Rajaie Cardiovascular, Medical and Research Centre, Iran University of Medical Sciences, Tehran, Iran
| | - K. Majidzadeh-A
- Cancer Genetics Department, Breast Cancer Research Center (BCRC), (ACECR), Tehran, Iran
- Tasnim Biotechnology Research Center (TBRC), Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - A. Vajhi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - M. Sadeghizadeh
- Department of Genetics, School of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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Sadeghpour A, Rappolt M, Ntountaniotis D, Chatzigeorgiou P, Viras K, Megariotis G, Papadopoulos M, Siapi E, Mali G, Mavromoustakos T. Comparative study of interactions of aliskiren and AT 1 receptor antagonists with lipid bilayers. Biochimica et Biophysica Acta (BBA) - Biomembranes 2015; 1848:984-94. [DOI: 10.1016/j.bbamem.2014.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/29/2014] [Accepted: 12/03/2014] [Indexed: 11/27/2022]
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Amaechi BT, Porteous N, Ramalingam K, Mensinkai PK, Ccahuana Vasquez RA, Sadeghpour A, Nakamoto T. Remineralization of artificial enamel lesions by theobromine. Caries Res 2013; 47:399-405. [PMID: 23615395 DOI: 10.1159/000348589] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Accepted: 02/04/2013] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE This study investigated the remineralization potential of theobromine in comparison to a standard NaF dentifrice. METHODS Three tooth blocks were produced from each of 30 teeth. Caries-like lesion was created on each block using acidified gel. A smaller block was cut from each block for baseline scanning electron microscopy imaging and electron-dispersive spectroscopy (EDS) analysis for surface Ca level. A tooth slice was cut from each lesion-bearing block for transverse microradiography (TMR) quantification of baseline mineral loss (Δz) and lesion depth (LD). Then baseline surface microhardness (SMH) of each lesion was measured. The three blocks from each tooth were assigned to three remineralizing agents: (1) artificial saliva; (2) artificial saliva with theobromine (0.0011 mol/l), and (3) NaF toothpaste slurry (0.0789 mol/l F). Remineralization was conducted using a pH cycling model with storage in artificial saliva. After a 28-day cycle, samples were analyzed using EDS, TMR, and SMH. Intragroup comparison of pre- and posttest data was performed using t tests (p < 0.05). Intergroup comparisons were performed by post hoc multistep comparisons (Tukey). RESULTS SMH indicated significant (p < 0.01) remineralization only with theobromine (38 ± 32%) and toothpaste (29 ± 16%). With TMR (Δz/lD), theobromine and toothpaste exhibited significantly (p < 0.01) higher mineral gain relative to artificial saliva. With SMH and TMR, remineralization produced by theobromine and toothpaste was not significantly different. With EDS, calcium deposition was significant in all groups, but not significantly different among the groups (theobromine 13 ± 8%, toothpaste 10 ± 5%, and artificial saliva 6 ± 8%). CONCLUSION The present study demonstrated that theobromine in an apatite-forming medium can enhance the remineralization potential of the medium.
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Affiliation(s)
- B T Amaechi
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Tex., USA
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Iriart X, Selly J, Thambo J, Van De Bruaene A, De Meester P, Delcroix M, Voigt J, Budts W, Sordi M, Aubry P, Juliard J, Messika-Zeitoun D, Mangieri E, Vahanian A, Brochet E, Elahi B, Sadeghpour A, Kyavar M, Madadi S, Iriart X, Horovitz A, Van Geldorp I, Thambo J. Congenital Heart Diseases. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Sadeghpour A, Rouhani A, Mohseni MA, Aghdam OA, Goldust M. Evaluation of surgical treatment of developmental dysplasia of hip for avascular necrosis of femoral head in children. Pak J Biol Sci 2012; 15:391-4. [PMID: 24199469 DOI: 10.3923/pjbs.2012.391.394] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Developmental Dysplasia of the Hip (DDH) is a common congenital malformation. Avascular necrosis of femoral head is the major complication of both close and open reduction of the dislocated joint. Aim of this study was to determine the incidence and influencing factors in different types of a vascular necrosis of femoral head, following surgical treatment of developmental dysplasia of hip in 1-7 years patients. In this study, 120 patients aged from 1 to 7 years old with DDH who had been undergone open surgery, entered to the study. All of these patients followed up for at least 1 year. Surgery procedures divided to 4 groups: open reduction, open reduction+salter osteotomy, open reduction+femur shortening and open reduction+salter osteotomy+femur shortening. The presence of Avascular Necrosis (AVN) had been appraised. 27.5% of surgeries performed on male and 72.5 on female patients. 35.0% of DDH cases were unilateral and remaining was bilateral. 36 patients (30%) shows radiologic findings of AVN, although all of them placed at group I of Bucholz-Ogden classification. 40% of group A patients, 25% of group B, 14.3% of group C and 36.4% of group D patients developed this findings. Open reduction of DDH in older children is effective in the management of DDH and if all of the contrivance considered in the surgery, the rate of AVN would be low and mild (at least in short term follow ups).
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Affiliation(s)
- A Sadeghpour
- Department of Orthopedics, Tabriz University of Medical Sciences, Tabriz, Iran
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Bedetti G, Gargani L, Pizzi C, Picano E, Sicari R, Fang F, Lam Y, Li W, Henein M, Sanderson J, Yu C, Samiei N, Hadizadeh N, Borji M, Esmaeilzadeh M, Ojaghi Haghighi Z, Sadeghpour A, Parsaei M, Shojaeifard M, Dragulescu A, Grosse-Wortmann L, Mertens L, Lilli A, Baratto M, Del Meglio J, Chioccioli M, Magnacca M, Poddighe R, Comella A, Talini E, Canale M, Casolo G. Oral Abstract Session: New approaches to analyse right ventricular function * Thursday 8 December 2011, 16:30-18:00 * Location: Kaposvar. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Sonne C, Bott-Fluegel L, Hauck S, Michalk F, Lesevic H, Demetz G, Braun D, Hausleiter J, Schoemig A, Kolb C, Hirayama Y, Tsukamoto M, Hotta D, Yokoyama H, Kikuchi K, Ohori K, Sato N, Kawamura Y, Hasebe N, Kaladaridis A, Bramos D, Skaltsiotis I, Kottis G, Antoniou A, Matthaios I, Agrios I, Vasiladiotis N, Pamboucas C, Toumanidis S, Minati M, Cavarretta E, De Ruvo E, Rebecchi M, Sciarra L, Matera S, Fratini S, Zuccaro L, Lioy E, Calo' L, Esposito C, Chinali M, D' Asaro M, Toscano A, Iacobelli R, Del Pasqua A, Di Clemente S, Parisi F, Pongiglione G, Rinelli G, Djordjevic-Dikic A, Nikcevic G, Raspopovic S, Jovanovic V, Tesic M, Djordjevic S, Milasinovic G, Gurel E, Tigen K, Karaahmet T, Dundar C, Guler A, Fotbolcu H, Basaran Y, Risum N, Williams E, Khouri M, Jackson K, Olsen N, Jons C, Storm K, Velazquez EJ, Kisslo J, Sogaard P, Separovic Hanzevacki J, Baricevic Z, Pezo Nikolic B, Lovric D, Ivanac Vranesic I, Ernst A, Milicic D, Jurin H, Esmaeilzadeh M, Salehi Omran M, Maleki M, Haghjoo M, Noohi F, Ojaghi Haghighi Z, Sadeghpour A, Nakhostin Davari P, Bakhshandeh Abkenar H. Moderated Poster Sessions 4: Velocity and deformation imaging in electrophysiology * Friday 9 December 2011, 14:00-18:00 * Location: Moderated Poster Area. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Shakouri SK, Eslamian F, Azari BK, Sadeghi-Bazargani H, Sadeghpour A, Salekzamani Y. Predictors of functional improvement among patients with hip fracture at a rehabilitation ward. Pak J Biol Sci 2010; 12:1516-20. [PMID: 20180329 DOI: 10.3923/pjbs.2009.1516.1520] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To determine possible predictors of FIM scores in patients with hip fracture at discharge a prospective cohort study of 117 patients with either DHS or hip arthroplasty admitted to a rehabilitation service was done. They were classified into four subgroups of underweight (BMI < 18.5), normal (18.5 < BMI < 24.9), overweight (25 < BMI < 29.9) and obese (30 < BMI < 35). Functional evaluations using FIM score as well as sitting, standing, walking days and length of stay for each patient were assessed by a highly skilled therapist at rehabilitation admission; discharge and a post discharge follow up. Recovery was significant in terms of motor subscale. No significant correlation was evident between hospitalization and discharge time with respect to cognitive subscale. The study showed only the age and FIM score at hospitalization to be the independent predictors of total FIM score at discharge. Elevated BMI has not adverse effect on FIM gains in patients with hip fractures. Simple surgery methods such as DHS revealed earlier recovery time than complicated procedures.
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Affiliation(s)
- S K Shakouri
- Physical Medicine and Rehabilitation, Tabriz University of Medical Sciences, Tabriz, Iran
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Bonakdar HR, Jorat MV, Fazelifar AF, Alizadeh A, Givtaj N, Sameie N, Sadeghpour A, Haghjoo M. Prediction of response to cardiac resynchronization therapy using simple electrocardiographic and echocardiographic tools. Europace 2009; 11:1330-7. [DOI: 10.1093/europace/eup258] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Esmaeilzadeh M, Khaledifar A, Maleki M, Sadeghpour A, Samiei N, Moladoust H, Noohi F, Haghighi ZO, Mohebbi A. Evaluation of left ventricular systolic and diastolic regional function after enhanced external counter pulsation therapy using strain rate imaging. European Journal of Echocardiography 2009; 10:120-6. [DOI: 10.1093/ejechocard/jen183] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wan X, Chen S, Sadeghpour A, Wang Q, Kirsch GE. Accelerated inactivation in a mutant Na(+) channel associated with idiopathic ventricular fibrillation. Am J Physiol Heart Circ Physiol 2001; 280:H354-60. [PMID: 11123251 DOI: 10.1152/ajpheart.2001.280.1.h354] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Idiopathic ventricular fibrillation (IVF) can cause sudden death in both adults and children. One form of IVF (Brugada syndrome), characterized by S-T segment elevation (STE) in the electrocardiogram, has been linked to mutations of SCN5A, the gene encoding the voltage-gated cardiac Na(+) channel. A missense mutation of SCN5A that substitutes glutamine for leucine at codon 567 (L567Q, in the cytoplasmic linker between domains I and II) is identified with sudden infant death and Brugada syndrome in one family. However, neither the functional effect of the L567Q mutation nor the molecular mechanism underlying the pathogenicity of the mutation is known. Patch-clamp analysis of L567Q channels expressed in human embryonic kidney cells revealed a marked acceleration and a negative shift in the voltage dependence of inactivation. Unlike other Brugada mutations, this phenotype was expressed independently of temperature or auxiliary beta(1)-subunits. These results support a proposed linkage between Brugada syndrome and some instances of sudden infant death and the hypothesis that reduced Na(+) conductance is the primary cause of IVF with STE.
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Affiliation(s)
- X Wan
- Department of Physiology and Biophysics, Rammelkamp Center for Education and Research, Case Western Reserve University, MetroHealth Campus, Cleveland, Ohio 44109, USA
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Crestani M, Sadeghpour A, Stroup D, Galli G, Chiang JY. Transcriptional activation of the cholesterol 7alpha-hydroxylase gene (CYP7A) by nuclear hormone receptors. J Lipid Res 1998; 39:2192-200. [PMID: 9799805] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
The gene encoding cholesterol 7alpha-hydroxylase (CYP7A), the rate-limiting enzyme in bile acid synthesis, is transcriptionally regulated by bile acids and hormones. Previously, we have identified two bile acid response elements (BARE) in the promoter of the CYP7A gene. The BARE II is located in nt -149/-118 region and contains three hormone response element (HRE)-like sequences that form two overlapping nuclear receptor binding sites. One is a direct repeat separated by one nucleotide DR1 (-146- TGGACTtAGTTCA-134) and the other is a direct repeat separated by five nucleotides DR5 (-139-AGTTCAaggccGGG TAA-123). Mutagenesis of these HRE sequences resulted in lower transcriptional activity of the CYP7A promoter/reporter genes in transient transfection assay in HepG2 cells. The orphan nuclear receptor, hepatocyte nuclear factor 4 (HNF-4)1, binds to the DR1 sequence as assessed by electrophoretic mobility shift assay, and activates the CYP7A promoter/reporter activity by about 9-fold. Cotransfection of HNF-4 plasmid with another orphan nuclear receptor, chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII), synergistically activated the CYP7A transcription by 80-fold. The DR5 binds the RXR/RAR heterodimer. A hepatocyte nuclear factor-3 (HNF-3) binding site (-175-TGTTTGTTCT-166) was identified. HNF-3 was required for both basal transcriptional activity and stimulation of the rat CYP7A promoter activity by retinoic acid. Combinatorial interactions and binding of these transcription factors to BAREs may modulate the promoter activity and also mediate bile acid repression of CYP7A gene transcription.
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Affiliation(s)
- M Crestani
- Department of Biochemistry and Molecular Pathology, Northeastern Ohio Universities College of Medicine, PO Box 95, Rootstown Ohio 44272-0095, USA
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Crestani M, Sadeghpour A, Stroup D, Galli G, Chiang JY. The opposing effects of retinoic acid and phorbol esters converge to a common response element in the promoter of the rat cholesterol 7 alpha-hydroxylase gene (CYP7A). Biochem Biophys Res Commun 1996; 225:585-92. [PMID: 8753804 DOI: 10.1006/bbrc.1996.1215] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The activity of the rat CYP7A/luciferase reporter gene was increased five-fold by all-trans retinoic acid (atRA) or 9-cis retinoic acid (9cRA) in transient transfection assay in HepG2 cells. Cotransfection with retinoid X receptor (RXR) stimulated the promoter activity in the absence of ligand, however, addition of atRA inhibited the transcriptional activity. Cotransfection with retinoic acid receptor (RAR) did not have much effect on CYP7A promoter activity. The CYP7A promoter, when linked upstream to the SV40/ luciferase reporter gene, strongly repressed the phorbol 12-myristate 13-acetate (PMA)-stimulated SV40/ luciferase reporter gene activity. The regions conferring the effects of RA and PMA were mapped to nt-176/ -117 and nt-148/-129, respectively. Several direct repeats of hormone response element (AGTTCA) in this region are required for RA response. AP-1 like sequences are located within the region responding to both RA and PMA. Site-directed mutagenesis of the AP-1 site abolished the effects of both RA and phorbol esters. Retinoic acid effect was antagonized by PMA. Moreover, cotransfection of Fos and Jun expression vectors blunted the stimulatory effect of retinoic acid on the CYP7A/luciferase gene activity. Therefore, effects of two different signal transduction pathways converge to a common response element. This regulatory cross-talk may be involved in bile acid repression and regulates CYP7 gene transcription in the liver.
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Affiliation(s)
- M Crestani
- Department of Biochemistry and Molecular Pathology, Northeastern Ohio Universities College of Medicine, Rootstown 44272-0095, USA
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Case TS, Saltzman MJ, Cheuk J, Yazdani M, Sadeghpour A, Albrecht D, Rossowska MJ, Nakamoto T. Combined effects of caffeine and alcohol during pregnancy on bones in newborn rats. Res Exp Med (Berl) 1996; 196:179-185. [PMID: 8875704 DOI: 10.1007/bf02576840] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The combined effects of caffeine and alcohol on mineral contents of fetal mandibles and femurs were studied. Pregnant rats were divided into four groups: group 1, control; group 2, caffeine; group 3, alcohol; and group 4, caffeine-plus-alcohol. Alcohol (1.0 g ethanol/kg body weight) was intubated twice daily, beginning at day 9 of gestation. Caffeine (2 mg/100 g body weight) was given as a dietary supplement. Groups 1 and 2 were intubated with isocaloric sucrose solution. At birth, randomly selected pups were killed and the mandible and femur were removed and dried. Ca, P, Mg, Zn and hydroxyproline in these bones were measured. Notwithstanding the dams' intake of caffeine and alcohol administered separately, the present results suggest that the combination of caffeine and alcohol exhibited the most detrimental effects.
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Affiliation(s)
- T S Case
- Department of Physiology, Louisiana State University Medical Center, New Orleans 70119, USA
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