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https://www.readbyqxmd.com/read/27922813/transcatheter-tricuspid-repair-with-mitraclip-for-severe-primary-tricuspid-regurgitation
#1
Neil P Fam, Kim A Connelly, Christoph Hammerstingl, Geraldine Ong, Anthony W A Wassef, Heather J Ross, Subodh Verma
Severe tricuspid regurgitation is an independent predictor of adverse outcomes, yet few patients undergo surgery and treatment with medical therapy is often inadequate. Recent studies have reported the use of the MitraClip system (Abbott Vascular) to treat secondary tricuspid regurgitation. We describe the first use of MitraClip to treat severe primary tricuspid regurgitation and right heart failure in a patient with previous cardiac transplantation and high surgical risk.
December 2016: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/27922771/giant-cell-myocarditis-a-brief-review
#2
Jin Xu, Erin G Brooks
Giant cell myocarditis (GCM) is a rapidly progressive and frequently fatal disease that mainly affects young to middle-aged previously healthy individuals. Early diagnosis is critical, as recent studies have shown that rapidly instituted cyclosporine-based immunosuppression can reduce inflammation and improve transplant-free survival. Before the 1980s, GCM was mainly a diagnosis made at autopsy. Owing to advancements in diagnostic and therapeutic options, it is now increasingly diagnosed on the basis of endomyocardial biopsies, explanted hearts, or apical wedge sections removed at the time of ventricular assist device placement...
December 2016: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/27922691/microarray-expression-profiles-of-genes-in-lung-tissues-of-rats-subjected-to-focal-cerebral-ischemia-induced-lung-injury-following-bone-marrow-derived-mesenchymal-stem-cell-transplantation
#3
Yue Hu, Liu-Lin Xiong, Piao Zhang, Ting-Hua Wang
Ischemia-induced stroke is the most common disease of the nervous system and is associated with a high mortality rate worldwide. Cerebral ischemia may lead to remote organ dysfunction, particular in the lungs, resulting in lung injury. Nowadays, bone marrow-derived mesenchymal stem cells (BMSCs) are widely studied in clinical trials as they may provide an effective solution to the treatment of neurological and cardiac diseases; however, the underlying molecular mechanisms remain unknown. In this study, a model of permanent focal cerebral ischemia-induced lung injury was successfully established and confirmed by neurological evaluation and lung injury scores...
December 6, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27920725/controlled-reperfusion-strategies-improve-cardiac-hemodynamic-recovery-after-warm-global-ischemia-in-an-isolated-working-rat-heart-model-of-donation-after-circulatory-death-dcd
#4
Emilie Farine, Petra Niederberger, Rahel K Wyss, Natalia Méndez-Carmona, Brigitta Gahl, Georg M Fiedler, Thierry P Carrel, Hendrik T Tevaearai Stahel, Sarah L Longnus
Aims: Donation after circulatory death (DCD) could improve cardiac graft availability, which is currently insufficient to meet transplant demand. However, DCD organs undergo an inevitable period of warm ischemia and most cardioprotective approaches can only be applied at reperfusion (procurement) for ethical reasons. We investigated whether modifying physical conditions at reperfusion, using four different strategies, effectively improves hemodynamic recovery after warm ischemia. Methods and Results: Isolated hearts of male Wistar rats were perfused in working-mode for 20 min, subjected to 27 min global ischemia (37°C), and 60 min reperfusion (n = 43)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27919740/metabolic-differences-between-cold-stored-and-machine-perfused-porcine-kidneys-a-1-h-nmr-based-study
#5
Jay Nath, Tom B Smith, Kamlesh Patel, Sam R Ebbs, Alex Hollis, Daniel A Tennant, Christian Ludwig, Andrew R Ready
Hypothermic machine perfusion (HMP) and static cold storage (SCS) are the two methods used to preserve deceased donor kidneys prior to transplant. This study seeks to characterise the metabolic profile of HMP and SCS porcine kidneys in a cardiac death donor model. Twenty kidneys were cold flushed and stored for two hours following retrieval. Paired kidneys then underwent 24 h of HMP or SCS or served as time zero controls. Metabolite quantification in both storage fluid and kidney tissue was performed using one dimensional (1)H NMR spectroscopy...
December 2, 2016: Cryobiology
https://www.readbyqxmd.com/read/27917264/systemic-to-pulmonary-artery-pressure-ratio-as-a-predictor-of-patient-outcome-following-liver-transplantation
#6
Annette Rebel, Dung Nguyen, Brooke Bauer, Paul A Sloan, Amy DiLorenzo, Zaki-Udin Hassan
AIM: To assess the value of the mean systemic-to-pulmonary artery pressure (MAP/mPAP) ratio for predicting outcomes following orthotopic liver transplant (OLT). METHODS: A retrospective data analysis was performed and data (mean arterial blood pressure, mean pulmonary artery pressure and Cardiac Index) were collected at several points during OLT. Outcomes evaluated were duration of postoperative endotracheal intubation [ET; minutes after intensive care unit (ICU) arrival], length of ICU stay, total hospitalization and frequency of immediate postoperative complications...
November 18, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27916652/exploring-pericyte-and-cardiac-stem-cell-secretome-unveils-new-tactics-for-drug-discovery
#7
REVIEW
Georgina M Ellison-Hughes, Paolo Madeddu
Ischaemic diseases remain a major cause of morbidity and mortality despite continuous advancements in medical and interventional treatments. Moreover, available drugs reduce symptoms associated with tissue ischaemia, without providing a definitive repair. Cardiovascular regenerative medicine is an expanding field of research that aims to improve the treatment of ischaemic disorders through restorative methods, such as gene therapy, stem cell therapy, and tissue engineering. Stem cell transplantation has salutary effects through direct and indirect actions, the latter being attributable to growth factors and cytokines released by stem cells and influencing the endogenous mechanisms of repair...
December 1, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27916323/donor-specific-anti-hla-antibodies-with-antibody-mediated-rejection-and-long-term-outcomes-following-heart-transplantation
#8
Kevin J Clerkin, Maryjane A Farr, Susan W Restaino, Emmanuel Zorn, Farhana Latif, Elena R Vasilescu, Charles C Marboe, Paolo C Colombo, Donna M Mancini
BACKGROUND: Donor-specific anti-HLA antibodies (DSA) are common after heart transplantation and are associated with rejection, cardiac allograft vasculopathy, and mortality. A noninvasive diagnostic test for pathologic antibody-mediated rejection (pAMR) does not exist. METHODS: From January 1, 2010, through August 31, 2013, 221 consecutive adult patients underwent heart transplantation and were followed through October 1, 2015. The primary objective was to determine whether the presence of DSA could detect AMR at the time of pathologic diagnosis...
November 17, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27916176/functional-assessment-and-transplantation-of-the-donor-heart-after-circulatory-death
#9
Simon J Messer, Richard G Axell, Simon Colah, Paul A White, Marian Ryan, Aravinda A Page, Barbora Parizkova, Kamen Valchanov, Christopher W White, Darren H Freed, Euan Ashley, John Dunning, Martin Goddard, Jayan Parameshwar, Christopher J Watson, Thomas Krieg, Ayyaz Ali, Steven Tsui, Stephen R Large
BACKGROUND: After a severe shortage of brain-dead donors, the demand for heart transplantation has never been greater. In an attempt to increase organ supply, abdominal and lung transplant programs have turned to the donation after circulatory-determined death (DCD) donor. However, because heart function cannot be assessed after circulatory death, DCD heart transplantation was deemed high risk and never adopted routinely. We report a novel method of functional assessment of the DCD heart resulting in a successful clinical program...
December 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27916039/-the-development-of-ex-vivo-lung-perfusion-in-lung-transplantation
#10
X F Pan, R Wang, S J Fu, Y H Yang, J Yang, H Zhao
The shortage of donor lung remains one of the major problem for lung transplantation. With the development of modern lung preservation and repair technique, increasing marginal lung donors have been re-assessed and finally utilized for transplantation. The ex vivo lung perfusion technique (EVLP) was designed and has been developed for evaluation and repair of the lung. Nowadays, the indication of EVLP and the standard of qualified donor lung have reached a consensus according to the foreign publications. The EVLP system could be classified into three categories: the Toronto technique, the Lund technique and Hannover-Madrid technique...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27916032/-lung-transplantation-for-phase-%C3%A2-silicosis-a-series-of-32-cases
#11
W J Mao, J Y Chen, M F Zheng, R Chen, Y J He, F Liu, S G Ye, R G Lu
Objective: To evaluate the effect of lung transplantation for phase Ⅲ silicosis. Methods: From September 2002 to September 2015, 32 patients with end-stage silicosis underwent lung transplantation at Department of Thoracic Surgery, Affiliated Wuxi People's Hospital, Nanjing Medical University. There were 29 male and 3 female patients aged from 24 to 63 years. Thirty-two patients were diagnosed as phase Ⅲ silicosis by the local occupational disease prevention and control center. Fifteen patients were type Ⅰ respiratory failure and 17 patients were type Ⅱ...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27916030/-short-term-outcomes-of-lung-transplant-recipients-using-organs-from-brain-death-donors
#12
W X He, C Jiang, X G Liu, W Huang, C Chen, L Jiang, B Yang, K Wu, Q K Chen, Y Yang, Y M Yu, G N Jiang
Objective: To assess short-term outcomes after lung transplantation with organs procured following brain death. Methods: Between April 2015 and July 2016, all 17 recipients after lung transplantation using organs from brain death donors (DBD) at Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine were enrolled in this study. All patients were male, aging (60±7) years, including 11 chronic obstructive pulmonary disease, 5 idiopathic pulmonary fibrosis, 1 silicosis...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27915963/kidney-transplant-recipients-requiring-critical-care-admission-within-one-year-of-transplant
#13
Okechukwu O Okidi, David Van Dellen, Cassandra Sobajo, Angela Summers, John R Greer, Titus Augustine
OBJECTIVES: Kidney transplant is the gold standard for treatment of renal failure. With the increasing age of the recipient population, which carries significant comorbidities, and the use of more marginal organs, there is potential for increased critical care admissions. In this study, we investigated the incidence, indications, and outcomes of patients admitted to critical care within 1 year of transplant. We also aimed to identify any precipitating factors or events that may trigger these admissions, as well as establish variables that could affect mortality...
December 2, 2016: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27915239/emergency-cardiac-double-valve-surgery-in-active-infective-endocarditis-due-to-acinetobacter-baumannii-with-aortic-root-abscess-in-a-patient-with-dialysis-dependent-end-stage-renal-failure-a-rare-case-report
#14
Moosa Kunhi, Sachin Sanagar, N Jagadeesh, Bhima Shankar, Abi Abraham
We report an end-stage renal disease (ESRD) patient on regular haemodialysis awaiting renal transplant having native aortic valve endocarditis due to Acinetobacter baumannii complicated with aortic root abscess and severe mitral valve regurgitation with NYHA class IV symptoms. He underwent emergency aortic root abscess debridement, reconstruction with autologous pericardial patch and bioprosthetic aortic valve replacement along with mitral valve repair. This emergency intervention in active infective endocarditis due to A...
December 2, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27913896/mesenchymal-stem-cells-with-enos-over-expression-enhance-cardiac-repair-in-rats-with-myocardial-infarction
#15
Leilei Chen, Yuan Zhang, Liangliang Tao, Zhijian Yang, Liansheng Wang
PURPOSE: Transplantation of mesenchymal stem cells (MSCs) is a promising therapeutic option for patients with acute myocardial infarction. METHODS: We show here that the ectopic overexpression of endothelial nitric oxide synthases (eNOS), an endothelial form of NOS, could enhance the ability of MSCs in treating ischemic heart damage after the occlusion of the coronary artery. RESULTS: Adenoviral delivery of human eNOS gene into mouse bone marrow-derived MSCs (BM-MSCs) conferred resistance to oxygen glucose deprivation (OGD)-induced cell death in vitro, and elevated the bioavailability of nitric oxide when injected into the myocardium in vivo...
December 3, 2016: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/27913812/association-between-cytokines-and-their-receptor-antagonist-gene-polymorphisms-and-clinical-risk-factors-and-acute-rejection-following-renal-transplantation
#16
SIqing Ding, Jianfei Xie, Qiquan Wan
BACKGROUND Acute rejection (AR) after renal transplantation affects both patient and graft survival. There is growing evidence of the genetic association between cytokine or its receptor antagonist and AR in solid organ transplantation. The objectives of this study were to investigate the role of recipient TNF β, IL-10, IL-1β, and IL-1 receptor antagonist (ra) gene polymorphism, as well as traditional clinical variables such as panel-reactive antibody (PRA) levels, donor type, and HLA mismatches in AR following renal transplantation...
December 3, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27913008/microrna-98-plays-a-critical-role-in-experimental-myocarditis
#17
Xiao Chen, Shuo Dong, Ningning Zhang, Liang Chen, Mao-Gang Li, Ping-Chang Yang, Jiangping Song
BACKGROUND AND AIMS: Myocarditis is inflammation in the heart; its pathogenesis is to be further investigated. Activities of micro RNAs (miR) are associated with immune inflammation. This study tests a hypothesis that miR-98 is involved in the development of myocarditis. METHODS: BALB/c mice were immunized with cardiac α-myosin heavy chain peptides (MyHC-α) to induce myocarditis. The effects of miR-98 on regulation of interleukin (IL)-10 were assessed by real time RT-PCR...
November 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27910802/near-infrared-spectroscopy-evaluated-cerebral-oxygenation-during-anesthesia
#18
Henrik Sørensen
Likely, maintained organ and notably cerebral perfusion, secures rapid recovery following anesthesia. To secure cerebral blood flow (CBF) at least mean arterial pressure (MAP) and the arterial carbon dioxide tension (PaCO2) need to be considered. CBF is "autoregulated", i.e. stays more or less stable within a MAP of 50-150 mmHg, but the lower limit appears to depend on the central blood volume and/or cardiac output, illustrated by a decrease in CBF at a MAP of 80 mmHg with a compromised central blood volume, while CBF remains constant with a MAP < 40 mmHg, if the central blood volume is maintained...
December 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/27909438/donor-specific-regulatory-t-cells-acquired-from-tolerant-mice-bearing-cardiac-allograft-promote-mixed-chimerism-and-prolong-intestinal-allograft-survival
#19
Xiao-Fei Shen, Jin-Peng Jiang, Jian-Jun Yang, Wei-Zhong Wang, Wen-Xian Guan, Jun-Feng Du
The induction of donor-specific transplant tolerance has always been a central problem for small bowel transplantation (SBT), which is thought to be the best therapy for end-stage bowel failure. With the development of new tolerance-inducing strategies, mixed chimerism induced by co-stimulation blockade has become most potent for tolerance of allografts, such as skin, kidney, and heart. However, a lack of clinically available co-stimulation blockers has hindered efficient application in humans. Furthermore, unlike those for other types of solid organ transplantation, strategies to induce robust mixed chimerism for intestinal allografts have not been fully developed...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27908284/obscured-hemorrhagic-pancreatitis-after-orthotopic-heart-transplantation-complicated-with-acute-right-heart-failure-and-hepatic-dysfunction-a-case-report
#20
Ting-Wei Lin, Meng-Ta Tsai, Jun-Neng Roan, Yi-Sheng Liu, Hong-Ming Tsai, Chwan-Yau Luo
BACKGROUND: Pancreatitis is a serious complication after cardiac surgery and can lead to significant morbidities and mortality. The incidence of pancreatitis is even higher in patients undergoing heart transplantation than in those undergoing other cardiac surgeries. Nevertheless, the clinical presentations of pancreatitis are frequently atypical in these patients. CASE PRESENTATION: We report a heart recipient who was complicated with acute right heart failure initially after orthotopic heart transplantation and developed devastating unanticipated hemorrhagic pancreatitis 1 month after the transplantation...
December 1, 2016: Journal of Cardiothoracic Surgery
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