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Isolated liver perfusion

Gilson Soares do Nascimento, Renato Polimeni Constantin, Eduardo Hideo Gilglioni, Cristiane Vizioli de Castro Ghizoni, Adelar Bracht, Karina Sayuri Utsunomiya, Nair Seiko Yamamoto, Emy Luiza Ishii-Iwamoto, Jorgete Constantin, Rodrigo Polimeni Constantin
No abstract text is available yet for this article.
June 11, 2018: Toxicology Letters
Sampa Ghose, Subhrajit Biswas, Kasturi Datta, Rakesh K Tyagi
BACKGROUND: Angiogenesis, the formation of new blood vessels from pre-existing vasculature is essential in a number of physiological processes such as embryonic development, wound healing as well as pathological conditions like, tumor growth and metastasis. Hyaluronic acid (HA), a high molecular weight polysaccharide, major component of extracellular matrix is known to associate with malignant phenotypes in melanomas and various other carcinomas. Hyaluronic acid binding protein 1 (HABP1) has been previously reported to trigger enhanced cellular proliferation in human liver cancer cells upon its over-expression...
June 11, 2018: BMC Cancer
R Ito, M Ito, Y Asano, A Murakumo, N Yamamoto, A Horiguchi
INTRODUCTION: Hepatocyte transplantation is a promising alternate for the treatment of hepatic diseases. Hypothermic preservation of isolated human hepatocytes is potentially a simple and convenient strategy to provide on-demand hepatocytes in the quantity sufficient and the quality required for biotherapy. Isolated fresh hepatocytes include damaged cells that are also early apoptotic cells, which is not ideal for hepatocyte transplantation. However, this does not reflect cell viability, although it is considered that it adversely affects cell survival after transplantation...
June 2018: Transplantation Proceedings
Brian A Boone, Samantha Perkins, Rupal Bandi, Ernesto Santos, Kevin McCluskey, David L Bartlett, James F Pingpank
BACKGROUND AND OBJECTIVES: Ocular melanoma has a predilection for liver metastases. Systemic treatment is ineffective and the optimal regional therapy approach is poorly defined. Isolated hepatic perfusion (IHP) with melphalan has emerged as a viable treatment option, however a subset of patients are not candidates for this treatment. We therefore sought to determine if melphalan could be safely administered via the hepatic artery for these patients. METHODS: A retrospective review of patients treated with hepatic artery infusion (HAI) of melphalan was undertaken...
April 2018: Journal of Surgical Oncology
Weiyang He, Shaojun Ye, Cheng Zeng, Shuai Xue, Xiaoyan Hu, Xingjian Zhang, Siqi Gao, Yan Xiong, Xueyu He, Soatina Vivalda, Ling Li, Yanfeng Wang, Qifa Ye
Hypothermic oxygenated perfusion (HOPE) is a relatively new dynamic preservation procedure that has not been widely implemented in liver transplantation despite its advantages. Improved graft protection is one such advantage offered by HOPE and has been attributed to multiple mechanisms, one of which may be the modulation of the thioredoxin-interacting protein (TXNIP)/NOD-like receptor protein 3 (NLRP3) inflammasome pathway. The TXNIP/NLRP3 inflammasome pathway plays a critical role in sterile inflammation under oxidative stress as a result of ischemia/reperfusion injury (IRI)...
June 5, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Liza Grapensparr, Gustaf Christoffersson, Per-Ola Carlsson
Pancreatic islets isolated for transplantation are disconnected from their vascular supply and need to establish a new functional network posttransplantation. Due to poor revascularization, prevailing hypoxia with correlating increased apoptosis rates in experimental studies can be observed for months posttransplantation. Endothelial progenitor cells (EPCs) are bone marrow-derived cells that promote neovascularization. The present study tested the hypothesis that EPCs, isolated from human umbilical cord blood, could be coated to human islet surfaces and be used to promote islet vascular engraftment...
January 1, 2018: Cell Transplantation
Rui A Carvalho, Ivana Jarak
Metabolic reprogramming has been associated to a plethora of diseases, and there has been increased demand for methodologies able to determine the metabolic alterations that characterize the pathological states and help developing metabolically centered therapies. In this chapter, methodologies for monitoring TCA cycle turnover and its interaction with pyruvate cycling and anaplerotic reactions will be presented. These methodologies are based in the application of stable 13 C isotope "tracers"/substrates and 13 C-NMR isotopomer analysis of metabolic intermediates...
2018: Methods in Molecular Biology
Thomas Kotsis, Constantinos Nastos, Konstantinos Stamatis, Ioanna Chondroudaki, Agathi Pafiti, Mata Frangou, Vina Kotsovolou, Konstantinos Chondros, Vasileios Smirniotis, Alexios Fotopoulos
BACKGROUND: Liver regeneration is a complex procedure in which insulin metabolism has been implicated. The aim of this experimental study was to evaluate the role of insulin in rat hepatic regeneration following major hepatectomy (70%), employing an isolated perfused rat liver (IPRL) model to assess the extraction of insulin from the regenerating liver. METHODS: Eighty-six male rats were randomized in 9 groups. A group of rats was studied at postoperative day (POD) 1 having a sham operation while control rats had no operation...
May 30, 2018: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
Zahra Azhdari Tafti, Mehdi Mahmoodi, Mohamad Reza Hajizadeh, Vahid Ezzatizadeh, Hossein Baharvand, Massoud Vosough, Abbas Piryaei
Objective: Recent advances in cell therapy have encouraged researchers to provide an alternative for treatment and restoration of damaged liver through using hepatocytes. However, these cells quickly lose their functional capabilities in vitro. Here, we aim to use the secretome of mesenchymal stromal cells (MSCs) to improve in vitro maintenance conditions for hepatocytes. Materials and Methods: In this experimental study, following serum deprivation, human adipose tissue-derived MSCs (hAT-MSCs) were cultured for 24 hours under normoxic (N) and hypoxic (H) conditions...
October 2018: Cell Journal
Shuai Xue, Weiyang He, Xianpeng Zeng, Zimei Tang, Shoucheng Feng, Zibiao Zhong, Yan Xiong, Yanfeng Wang, Qifa Ye
Hypothermic machine perfusion (HMP) has been demonstrated to be a more effective method for preserving livers donated after circulatory death (DCD) than cold storage (CS); however, the underlying mechanisms remain unclear. The aim of the present study was to investigate the protective effects of HMP on rat DCD livers and the possible role of the nuclear factor erythroid 2‑related factor 2 (Nrf2)/antioxidant response element (ARE) signaling pathway. A total of 18 adult male rats were randomly divided into three groups: Control, HMP and CS (n=6 per group)...
May 23, 2018: Molecular Medicine Reports
Evan S Weitman, Jonathan S Zager
Locoregionally advanced and unresectable disease can be seen in up to 10% of melanoma patients. Treatment options for these patients have been evolving most notably over the past few decades and have demonstrated efficacy through multiple intra-arterial as well as intralesional therapies. Isolated limb perfusions and isolated limb infusions have been utilized to treat locoregionally advanced melanoma of the extremity with overall response rates up to 90% in some reports. Intralesional therapies, for in transit metastatic melanoma, such as Bacille Calmette-Guerin, talimogene laherparepvec, and PV-10 (Rose Bengal) have all demonstrated efficacy in the treatment of unresectable cutaneous melanoma...
May 8, 2018: Clinical & Experimental Metastasis
Nora Winkler, Felix Strübing, Wolfgang Groß, Walter Mier, Eduard Ryschich
The systemic drug circulation represents a source of adverse effects during tumor targeting. We studied the binding efficacy of endothelium-specific antibodies after a very short contact with an antigen target, along with assessing the intravascular capture and targeting potential of these antibodies after locoregional injection. Fast-binding anti-CD146 (clone ME-9F1) and anti-CD31 (clone 390) antibodies were selected based on histological analysis of their binding activity. The efficacy of antibody capture by hepatic endothelium under different conditions was analyzed using an isolated liver perfusion model...
May 7, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
Xiang Gao, Andreas Lindqvist, Monica Sandberg, Leif Groop, Nils Wierup, Leif Jansson
The incretin hormone glucose-dependent insulinotropic polypeptide (GIP) potentiates glucose-stimulated insulin secretion, and affects β-cell turnover. This study aimed at evaluating if some of the beneficial effects of GIP on glucose homeostasis can be explained by modulation of islet blood flow. Anesthetized Sprague-Dawley rats were infused intravenously with different doses of GIP (10, 20, or 60 ng/kg*min) for 30 min. Subsequent organ blood flow measurements were performed with microspheres. In separate animals, islets were perfused ex vivo with GIP (10-6 -10-12  mol/L) during normo- and hyperglycemia and arteriolar responsiveness was recorded...
April 2018: Physiological Reports
Yunpeng Shi, Ping Zhang, Guangyi Wang, Xingkai Liu, Xiaodong Sun, Xin Zhang, Haijun Li, Jun Qi, Lei Ding, Ting Li, Ruoyan Zhang, Yuguo Chen, Jianpeng Zhou, Guoyue Lv, Zhengkun Tu
Aim: Prior to transplantation, Donation after Cardiac Death (DCD) liver transplantation livers are perfused with preservation solution. Therefore, this provides an abundant source of human liver lymphocytes, as well as mesenteric lymph node and spleen for the study of lymphocyte subset diversity in the peripheral blood, lymph node, spleen and liver. Methods: Lymphocyte subsets were isolated and purified from peripheral blood, lymph node, spleen and liver perfusion, the phenotypic and functional analysis of the tissue resident lymphocyte were performed by flow cytometry...
March 20, 2018: Oncotarget
Gilson Soares do Nascimento, Renato Polimeni Constantin, Eduardo Hideo Gilglioni, Cristiane Vizioli de Castro Ghizoni, Adelar Bracht, Karina Sayuri Utsunomiya, Nair Seiko Yamamoto, Emy Luiza Ishii-Iwamoto, Jorgete Constantin, Rodrigo Polimeni Constantin
Citrus flavanones are often linked to their antihyperglycemic properties. This effect may be in part due to the inhibition of hepatic gluconeogenesis through different mechanisms. One of the possible mechanisms appears to be impairment of oxidative phosphorylation, which may also interfere with glycogen metabolism. Based on these facts, the purpose of the present study was to investigate the effects of three citrus flavanones on glycogenolysis in the isolated perfused rat liver. Hesperidin, hesperetin, and naringenin stimulated glycogenolysis and glycolysis from glycogen with concomitant changes in oxygen uptake...
July 2018: Toxicology Letters
Donia Tabka, Mohamed Bejaoui, James Javellaud, Jean-Michel Achard, Hassen Ben Abdennebi
This study aims to determine whether Angiotensin IV (Ang IV) addition to Celsior preservation solution could improve hepatic endothelium function and provide better liver protection during subnormothermic machine preservation (SMP). Two experimental models were used: In the first part of the study, rings isolated from rat hepatic artery were preserved in Celsior solution (6 h, 20 °C) with and without Ang IV (10-9  M), then, endothelium-dependent relaxation (EDR) and the concentration of acetylcholine inducing half-maximal relaxation of pre-contracted rings (EC50) were measured...
March 30, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Norma Alva, Raquel G Bardallo, David Basanta, Jesús Palomeque, Teresa Carbonell
Hypothermia may attenuate the progression of ischemia-induced damage in liver. Here, we determined the effects of a brief cycle of hypothermic preconditioning applied before an ischemic/reperfusion (I/R) episode in isolated perfused rat liver (IPRL) on tissue damage and oxidative stress. Rats (male, 200-250 g) were anaesthetised with sodium pentobarbital (60 mg·kg-1 i.p) and underwent laparatomy. The liver was removed and perfused in a temperature-regulated non-recirculating system. Livers were randomly divided into two groups ( n = 6 each group)...
March 29, 2018: International Journal of Molecular Sciences
Feng-Ling Yu, Wei-Liang Gong, Fang-Jiang Xu, Jun-Wen Wu, Shailendra Shakya, He Zhu
BACKGROUND AND OBJECTIVES: Protein-calorie malnutrition (PCM) is one of the most suffered complications in cancer patients. Polyphyllin I (PPI), a saponin isolated from rhizome of Paris polyphylla, is a potential candidate in cancer therapy. In this study, the influence of nutritional status on the absorption of PPI in rats was explored after oral administration. METHODS: PCM rats, namely mal-nourished (MN) rats, were induced from well-nourished (WN) rats by caloric restriction protocol...
March 28, 2018: European Journal of Drug Metabolism and Pharmacokinetics
Neyla Ben Gdara, Amel Belgacem, Ikram Khemiri, Safa Mannai, Lotfi Bitri
In this study, phycocyanin (Pc) extracted from Spirulina platensis was used to evaluate its antioxidants effects after ischemia/reperfusion injury (IRI) using the ex-vivo model of isolated perfused rat liver. The rats were divided into eight groups : Control group, where livers were directly perfused after their removal; Cold Ischemia group (CI), livers were treated in the same way as the control group, except that after their collection, they were stored for 12 h and 24 h in the Krebs Henseleit (KH) preservation solution at 4 °C and Treated group (PHY), livers were preserved in the same way as the preceding group except that the KH solution was enriched with phycocyanin at two different concentrations...
June 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
A C Van Erp, R A Rebolledo, D Hoeksma, N R Jespersen, P J Ottens, R Nørregaard, M Pedersen, C Laustsen, J G M Burgerhof, J C Wolters, J Ciapaite, H E Bøtker, H G D Leuvenink, B Jespersen
Hepatic and renal energy status prior to transplantation correlates with graft survival. However, effects of brain death (BD) on organ-specific energy status are largely unknown. We studied metabolism, perfusion, oxygen consumption, and mitochondrial function in the liver and kidneys following BD. BD was induced in mechanically-ventilated rats, inflating an epidurally-placed Fogarty-catheter, with sham-operated rats as controls. A 9.4T-preclinical MRI system measured hourly oxygen availability (BOLD-related R2*) and perfusion (T1-weighted)...
March 13, 2018: Scientific Reports
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