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https://www.readbyqxmd.com/read/28428038/non-invasive-tracking-of-hydrogel-degradation-using-upconversion-nanoparticles
#1
Yuqing Dong, Guorui Jin, Changchun Ji, Rongyan He, Min Lin, Xin Zhao, Ang Li, Tian Jian Lu, Feng Xu
Tracking the distribution and degradation of hydrogels in vivo is important for various applications including tissue engineering and drug delivery. Among various imaging modalities, fluorescence imaging has attracted intensive attention due to their high sensitivity, low cost and easy operation. Particularly, upconversion nanoparticles (UCNPs) that emit visible lights upon near-infrared (NIR) light excitation as tracking probes are promising in deciphering the fate of hydrogels after transplantation. Herein, we reported a facile and non-invasive in vivo hydrogel tracking method using UCNPs, where the degradation of hydrogels was determined using the decrease in fluorescence intensity from the UCNPs encapsulated in the hydrogels...
April 17, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28426448/clinical-and-ethical-challenges-in-heart-transplantation-from-donation-after-circulatory-determined-death-donors
#2
Stephen Large, Steven Tsui, Simon Messer
PURPOSE OF REVIEW: The aim of this study was to describe the development of a clinical programme of heart transplantation from nonheart beating (or donation after circulatory determined death, DCD) donors. DCD is an established practice in abdominal and lung transplantation. The opportunity for sufferers of advanced heart failure provided by DCD heart transplantation is described. RECENT FINDINGS: Work shows that the arrested DCD heart is viable and has a 30-min tolerance to anoxia at normal body temperature making transplantation possible...
April 19, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28420415/distribution-pattern-following-systemic-mesenchymal-stem-cell-injection-depends-on-the-age-of-the-recipient-and-neuronal-health
#3
Claire Fabian, Yahaira Naaldijk, Christiane Leovsky, Adiv A Johnson, Lukas Rudolph, Carsten Jaeger, Katrin Arnold, Alexandra Stolzing
BACKGROUND: Mesenchymal stem cells (MSCs) show therapeutic efficacy in many different age-related degenerative diseases, including Alzheimer's disease. Very little is currently known about whether or not aging impacts the transplantation efficiency of MSCs. METHODS: In this study, we investigated the distribution of intravenously transplanted syngeneic MSCs derived from young and aged mice into young, aged, and transgenic APP/PS1 Alzheimer's disease mice. MSCs from male donors were transplanted into female mice and their distribution pattern was monitored by PCR using Y-chromosome specific probes...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28413189/heart-transplantation-in-asia
#4
Hae-Young Lee, Byung-Hee Oh
Heart transplantation (HTx) is the effective way to improve quality of life as well as survival in terminal heart failure (HF) patients. Since the first heart transplant in 1968 in Japan and in earnest in 1987 at Taiwan, HTx has been continuously increasing in Asia. Although the current percentage of heart transplants from Asia comprises only 5.7% of cases in the International Society of Heart and Lung Transplantation (ISHLT) registry, the values were under-reported and soon will be greatly increased. HTx in Asia shows comparable with or even better results compared with ISHLT registry data...
April 11, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28412426/unraveling-the-rv-ejection-doppler%C3%A2-envelope-insight-into-pulmonary-artery-hemodynamics-and-disease%C3%A2-severity
#5
Hiroko Takahama, Robert B McCully, Robert P Frantz, Garvan C Kane
OBJECTIVES: The purpose of this study was to characterize the profiles of right ventricular outflow tract (RVOT) Doppler flow velocity envelopes in patients with pulmonary arterial hypertension (PAH) and to establish whether changes in the RVOT flow profile related to patient outcome. BACKGROUND: The RVOT systolic flow profile is frequently abnormal, with findings of a mid-systolic flow deceleration and notching, previously proposed as an indicator of elevated pulmonary vascular resistance (PVR)...
April 7, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28409093/first-case-of-invasive-magnusiomyces-capitatus-infection-in-slovakia
#6
Dominika Tanuskova, Julia Horakova, Peter Svec, Ivana Bodova, Martina Lengerova, Matej Bezdicek, Miroslava Poczova, Jozef Koppl, Alexandra Kolenova
Magnusiomyces capitatus (previously known as Geotrichum capitatum or Blastoschizomyces capitatus or Trichosporon capitatum) is a rare cause of fungal infection in immunocompromised patients. Most of these cases (87%) have been reported from the Mediterranean region, as it is extremely rare to recognize it in other regions. Here we report a first case of disseminated M. capitatus infection in Slovakia. The patient - 19 year old woman with myelodysplastic syndrome was diagnosed with M. capitatus fungemia after allogeneic stem cell transplantation...
June 2017: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28397445/-from-right-to-left-the-role-of-right-heart-catheterization-in-the-diagnosis-and-management-of-left-heart-diseases
#7
REVIEW
Marta Kałużna-Oleksy, Aleksander Araszkiewicz, Jacek Migaj, Maciej Lesiak, Ewa Straburzyńska-Migaj
Pulmonary hypertension (PH), second only to left heart diseases (LHD), is a frequent problem in clinical practice. At the same time, left heart diseases represent the most common cause of pulmonary hypertension, and the occurrence of PH in patients with chronic heart failure is usually associated with worse functional class, and prognosis. Right heart catheterization (RHC) is the "gold standard" in the diagnosis and differentiation of PH. It is also essential in the process of qualifying for a heart transplantation...
January 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28396164/dose-escalation-of-total-marrow-irradiation-in-high-risk-patients-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#8
Susanta Hui, Claudio Brunstein, Yutaka Takahashi, Todd DeFor, Shernan G Holtan, Veronika Bachanova, Christopher Wilke, Darren Zuro, Celalettin Ustun, Daniel Weisdorf, Kathryn Dusenbery, Michael R Verneris
Patients with refractory leukemia or minimal residual disease (MRD) at transplant have increased risk of relapse. Augmentation of irradiation, especially to sites of disease (i.e., bone marrow) is one potential strategy to overcome this risk. We studied the feasibility of radiation dose escalation in high risk patients using total marrow irradiation (TMI) in a phase I dose-escalation trial. Four pediatric and 8 adult patients received conditioning with cyclophosphamide and fludarabine in conjunction with image-guided radiation to the bone marrow at 15 Gy and 18 Gy (in 3 Gy/fractions), while maintaining the total body irradiation (TBI) dose to the vital organs (lungs, hearts, eyes, liver, kidneys) at <13...
April 7, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28390796/handle-with-care-a-systematic-review-on-frailty-in-cardiac-care-and-its-usefulness-in-heart-transplantation
#9
REVIEW
Oliver Mauthner, Veerle Claes, Mieke Deschodt, Sunita R Jha, Sandra Engberg, Peter S Macdonald, Phillip J Newton, Sabina De Geest
BACKGROUND: There is growing consensus that frailty, a state of vulnerability and a decline in functioning across multiple physiological body systems, is a valuable criterion to guide clinicians' risk prediction for poor outcomes in adult transplant candidates. In its 2016 listing criteria for heart transplantation the International Society for Heart Lung Transplantation recommends frailty assessment. We aimed to summarize the usefulness of frailty assessment in heart transplant candidates or recipients reported throughout the literature...
March 30, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28377543/mycobacterium-tuberculosis-in-solid-organ-transplantation-incidence-before-and-after-expanded-isoniazid-prophylaxis
#10
Suad Mohamed Al-Mukhaini, Hassan Al-Eid, Fatima Alduraibi, Hanan Ibrahim Hakami, Haifa Al Talhi, Mohamed Shoukri, Ahmed M Ahmed, Yusuf Ahmed, Abdulrahman A Alrajhi
BACKGROUND: The risk of tuberculosis is increased in solid organ transplantation. Rates remain high in developed and developing countries. We developed protocols to better identify transplant recipients at risk of tuberculosis and initiate interventions to prevent tuberculosis. OBJECTIVES: Report tuberculosis incidence in solid-organ transplant recipients and the results of expanded isoniazid prophylaxis in deceased-donor renal transplantation. DESIGN: Retrospective cohort study, comparing two time periods...
March 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/28372287/organ-reconstruction-dream-or-reality-for%C3%A2-the%C3%A2-future
#11
J-F Stoltz, L Zhang, J S Ye, N De Isla
The relevance of research on reconstructed organs is justified by the lack of organs available for transplant and the growing needs for the ageing population. The development of a reconstructed organ involves two parallel complementary steps: de-cellularization of the organ with the need to maintain the structural integrity of the extracellular matrix and vascular network and re-cellularization of the scaffold with stem cells or resident cells.Whole organ engineering for liver, heart, lung or kidneys, is particularly difficult because of the structural complexity of organs and heterogeneity of cells...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28366682/indications-for-lung-resection-surgery-and-lung-transplant-in-south-american-children-with-cystic-fibrosis
#12
REVIEW
Fabíola Villac Adde, Sílvia Vidal Campos, Ricardo Henrique de Oliveira Braga Teixeira, Joaquim Carlos Rodrigues
The current available literature evaluating lung resection surgery and lung transplantation in children with cystic fibrosis (CF) was reviewed through a PubMed search and references from selected studies were additionally included. Pulmonary resections, i.e. lobectomy, segmentectomy, and pneumonectomy, are seldom performed in CF. The main indications, in patients with a forced expiratory volume in 1second (FEV1) that is greater than 30% predicted, are localized bronchiectasis/atelectasis, severe hemoptysis, and bronchopleural fistula refractory to medical management...
February 16, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28364441/survival-after-lung-transplantation-for-cystic-fibrosis-in-sweden%C3%A2
#13
Marita Gilljam, Ulla Nyström, Göran Dellgren, Ingrid Skog, Lennart Hansson
OBJECTIVES: In Sweden, lung transplantation has been performed in patients with end-stage lung disease since 1990. We assessed survival after lung transplantation for cystic fibrosis (CF) with focus on early mortality and outcome for patients infected with certain multiresistant bacteria, considered a relative contraindication for lung transplantation. METHODS: Review of CF and transplant databases and patient charts. The Kaplan-Meier method and log-rank test were used for survival analysis and group comparison...
March 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28353604/a-case-report-of-pvod-patient-combined-with-pulmonary-embolism-anticoagulation-or-not
#14
Xiaoling Yuan, Xianghe Hou, Weihong Guo, Haiming Jiang, Junmeng Zheng, Stuti Paudyal, Yanhua Lyu
RATIONALE: Pulmonary veno-occlusive disease (PVOD) is a rare form of pulmonary arterial hypertension (PAH). Oral anticoagulation is confined to patients with idiopathic PAH (IPAH), but no oral anticoagulation has been recommended for PVOD, because occult pulmonary hemorrhage was a common finding in PVOD. PATIENT CONCERNS: We report a case of PVOD, who was misdiagnosed as IPAH for 5 years with worsening dyspnea and two episodes of pulmonary embolism (PE). DIAGNOSES: He was confirmed as PVOD combined with PE by biopsy of the explanted lung specimen...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28353362/anti-coagulation-complications-in-pregnancies-with-severe-pulmonary-arterial-hypertension
#15
Tiffany Herrero, Erin Martin, David S Poch, Hilary A Roeder
BACKGROUND: Epoprostenol, a potent vasodilator, is the treatment of choice for severe pulmonary arterial hypertension (PAH) in pregnancy. However, its inhibition of platelet aggregation increases the risk of coagulation complications with conjunctive use of anti-coagulants for thromboprophylaxis. CASES: Case 1 demonstrates a pregnancy complicated by thrombocytopenia. Case 2 describes a pregnancy with newly-diagnosed PAH at 35 weeks who delivered by repeat cesarean delivery complicated by a wound hematoma...
March 29, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28348949/impact-of-advanced-medical-therapy-for-the-outcome-of-an-adult-patient-with-eisenmenger-syndrome
#16
Eglė Ereminienė, Marija Kinderytė, Skaidrius Miliauskas
Eisenmenger syndrome (ES) is the most severe form of pulmonary arterial hypertension (PAH) associated with congenital heart disease. It is an extremely devastating condition with a serious impact on patients' life. Classical therapy of ES remains directed to avoid complications, such as erythrocytosis, treatment of congestive heart failure, prevention of infection, and secondary haematological abnormalities such as iron deficiency and coagulation disorders. However, the only effective treatment is heart-lung transplantation; still, morbidity and mortality after transplantation remain substantially high...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28344417/circulating-adiponectin-levels-following-treatment-can-predict-late-clinical-outcomes-in-chronic-heart-failure
#17
Ho-Ping Yu, Hsu-Lung Jen, Wei-Hsian Yin, Jeng Wei
BACKGROUND: Circulating adiponectin concentration increases in patients with chronic heart failure (HF). We sought to explore the prognostic value of temporal changes in adiponectin concentration following treatment for chronic HF. METHODS: Serum adiponectin levels were measured at baseline and after a 3-month anti-failure treatment in 124 patients with symptomatic chronic systolic HF. Major adverse cardiac events (MACE) including death, heart transplantation, or hospitalization with worsening HF during a median follow-up period of 752 days were determined...
March 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/28331450/pulmonary-thromboendarterectomy-for-pulmonary-hypertension-before-considering-transplant
#18
Hannah Kooperkamp, Inder Mehta, David Fary, Michael Bates
BACKGROUND: In cases of chronic thromboembolic pulmonary hypertension (CTEPH), referral for possible surgical intervention is important because surgery can be curative. Surgery necessitates cardiopulmonary bypass and deep circulatory arrest with pulmonary thrombectomy and bilateral endarterectomy (PTE). If surgery fails, lung transplant is the next best surgical option. Medical treatment is also an important adjunct. CASE REPORT: A 35-year-old female presented 3 months after a pulmonary embolus was found to be completely occluding her left pulmonary artery...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28329162/the-value-of-fluorine-18-deoxyglucose-positron-emission-tomography-scans-in-patients-with-ventricular-assist-device-specific-infections%C3%A2
#19
Alexander M Bernhardt, Mustafa A Pamirsad, Chantal Brand, Daniel Reichart, Milena Tienken, Markus J Barten, Andreas Schaefer, Hanno Grahn, Meike Rybczynski, Tobias Deuse, Hermann Reichenspurner, Florian M Wagner
BACKGROUND: Infections are major complications in patients with ventricular assist devices (VAD). Positron emission tomography with deoxyglucose marked by fluorine-18 ( 18 F-FDG PET/CT) is a diagnostic tool to scan for tissue with high metabolism as present in infections. The specificity of 18 F-FDG PET/CT to discriminate between infection and an aseptic reaction of the implanted device is not defined and its evaluation is the aim of this retrospective analysis. METHODS: Until September 2015 a total of 100 patients underwent VAD implantations in our institution...
February 20, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28323904/pyrrolidine-dithiocarbamate-administered-during-ex-vivo-lung-perfusion-promotes-rehabilitation-of-injured-donor-rat-lungs-obtained-after-prolonged-warm-ischemia
#20
Cyril Francioli, Xingyu Wang, Roumen Parapanov, Etienne Abdelnour, Jérôme Lugrin, Fabrizio Gronchi, Jean Perentes, Philippe Eckert, Hans-Beat Ris, Lise Piquilloud, Thorsten Krueger, Lucas Liaudet
Damaged lung grafts obtained after circulatory death (DCD lungs) and warm ischemia may be at high risk of reperfusion injury after transplantation. Such lungs could be pharmacologically reconditioned using ex-vivo lung perfusion (EVLP). Since acute inflammation related to the activation of nuclear factor kappaB (NF-κB) is instrumental in lung reperfusion injury, we hypothesized that DCD lungs might be treated during EVLP by pyrrolidine dithiocarbamate (PDTC), an inhibitor of NF-κB. Rat lungs exposed to 1h warm ischemia and 2 h cold ischemia were subjected to EVLP during 4h, in absence (CTRL group, N = 6) or in presence of PDTC (2...
2017: PloS One
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