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mitochondria transplant

Rui Zheng, Xiaoliang Fang, Lei He, Yanjiao Shao, Nana Guo, Liren Wang, Mingyao Liu, Dali Li, Hongquan Geng
BACKGROUND: Primary hyperoxaluria type 1 (PH1) is an inherited disease caused by mutations in alanine-glyoxylate aminotransferase (AGXT). It is characterized by abnormal metabolism of glyoxylic acid in liver leading to endogenous oxalate overproduction and deposition of oxalate in multiple organs, mainly the kidney. Patients of PH1 often suffer from recurrent urinary tract stones, and finally renal failure. There is no effective treatment other than combined liver-kidney transplantation...
December 11, 2018: Current Molecular Medicine
Eleonora Russo, Eleonora Napoli, Cesar V Borlongan
Stroke is a debilitating disease that remains as a significant unmet need. Although our understanding of the disease pathology has advanced over the years, treatment options for stroke are limited. Recent studies have implicated the important role of healthy mitochondria in neuroprotection against stroke. Under the stroke pathological condition, transfer of healthy mitochondria is observed from astrocytes to ischemic neurons. However, without additional therapeutic intervention, such astrocyte-to-neuron transfer of mitochondria may not sufficiently afford a robust and stable therapeutic effect against the devastating primary insult and progressive neurodegeneration associated with stroke...
July 2018: Brain Circulation
Eleonora Russo, Hung Nguyen, Trenton Lippert, Julian Tuazon, Cesar V Borlongan, Eleonora Napoli
Stroke is a main cause of mortality and morbidity worldwide. Despite the increasing development of innovative treatments for stroke, most are unsuccessful in clinical trials. In recent years, an encouraging strategy for stroke therapy has been identified in stem cells transplantation. In particular, grafting cells and their secretion products are leading with functional recovery in stroke patients by promoting the growth and function of the neurovascular unit - a communication framework between neurons, their supply microvessels along with glial cells - underlying stroke pathology and recovery...
July 2018: Brain Circulation
Kamila Moskowitzova, Borami Shin, Kaifeng Liu, Giovanna Ramirez-Barbieri, Alvise Guariento, David Blitzer, Jerusha K Thedsanamoorthy, Rouan Yao, Erin R Snay, James A H Inkster, Arzoo Orfany, David Zurakowski, Douglas B Cowan, Alan B Packard, Gary A Visner, Pedro J Del Nido, James D McCully
BACKGROUND: Cold ischemia time (CIT) causes ischemia‒reperfusion injury to the mitochondria and detrimentally effects myocardial function and tissue viability. Mitochondrial transplantation replaces damaged mitochondria and enhances myocardial function and tissue viability. Herein we investigated the efficacy of mitochondrial transplantation in enhancing graft function and viability after prolonged CIT. METHODS: Heterotopic heart transplantation was performed in C57BL/6J mice...
September 28, 2018: Journal of Heart and Lung Transplantation
Makoto Kazama, Kazuhiro Yoshida, Sanae Ogiwara, Takashi Makiuchi, Hiroshi Tachibana
In mitochondria, compatibility of proteins encoded in mitochondrial DNA and nuclear DNA is essential for normal function of the organelle. Incompatibility between mitochondrial and nuclear DNA can lead to dysfunctional respiration, mitochondrial diseases and lethal problems, which suggests that the presence of heterologous mitochondria is unfavorable. In a previous study, we established a transplant method for DNA-lacking mitochondria (mitosomes) in the anaerobic protozoan Entamoeba histolytica. In this study, interspecies transplant of mitosomes from E...
October 17, 2018: Journal of Eukaryotic Microbiology
Armelle Paule, Domenico Frezza, Marvin Edeas
An imbalance of bacterial quantity and quality of gut microbiota has been linked to several pathologies. New strategies of microbiota manipulation have been developed such as fecal microbiota transplantation (FMT); the use of pre/probiotics; an appropriate diet; and phage therapy. The presence of bacteriophages has been largely underestimated and their presence is a relevant component for the microbiome equilibrium. As a promising treatment, phage therapy has been extensively used in Eastern Europe to reduce pathogenic bacteria and has arisen as a new method to modulate microbiota diversity...
October 5, 2018: Medical Sciences: Open Access Journal
Xiaotian Sun, Wenshuo Wang, Jing Dai, Jiechun Huang, Meng Shi, Xianglin Chu, Fangrui Wang, Changfa Guo, Chunsheng Wang, Liewen Pang, Yiqing Wang
Cardiac transplantation has been limited by the inability to long preserve donor hearts safely. Hydrogen sulfide (H2 S) has been recognized as an important gasotransmitter exerting potent cardioprotection from ischemia/reperfusion injury (I/R). Herein we investigated the cardioprotective effects of a novel long-term and slow-releasing H2 S system, namely DATS-MSN, in heart preservation solution using a heart transplantation models. The release of H2 S from DATS-MSN was slow and continuous in the University of Wisconsin solution (UW), correspondingly, DATS-MSN application demonstrated superior cardioprotective effects over the control and traditional H2 S donors after 6 h heart preservation and 1 h reperfusion, associated with greater allograft performance including left ventricular developed pressure (LVDP) and dP/dt max , reduced plasmic CK-MB and troponin I levels, inhibited myocardial inflammation, increased antioxidant enzyme activities, preserved mitochondria structure and function, and decreased cardiomyocyte apoptosis index...
September 11, 2018: Nitric Oxide: Biology and Chemistry
Zhanqin Zhang, Zhi Ma, Chaoying Yan, Kairui Pu, Meiyan Wu, Juan Bai, Yansong Li, Qiang Wang
The available evidence showed that mitochondrial transfer by releasing the extracellular vesicles containing mitochondria from astrocytes to neurons exerted a neuroprotective effect after stroke. Whether extracellular mitochondrial replenishment could rescue the tissues from cerebral ischemic injury still needs to be explored completely. It was hypothesized that the augmentation of mitochondrial damage after cerebral ischemia could be resolved by timely replenishment of exogenous mitochondria. A stroke model of middle cerebral artery occlusion (MCAO) was used in this study to verify this hypothesis...
January 1, 2019: Behavioural Brain Research
Ye Li, Xinxin Wang, Jiali Ren, Xiaoshan Wu, Guoqing Li, Zhipeng Fan, Chunmei Zhang, Ang Li, Songlin Wang
Signal transduction between different organs is crucial in the normal development of the human body. As an important medium for signal communication, exosomes can transfer important information, such as microRNAs (miRNAs), from donors to receptors. MiRNAs are known to fine-tune a variety of biological processes, including maxillofacial development; however, the underlying mechanism remains largely unknown. In the present study, transient apoptosis was found to be due to the expression of a miniature swine maxillofacial-specific miRNA, ssc-mir-133b...
2018: Bone Research
Pierre Brissot, Marie-Bérengère Troadec, Olivier Loréal, Eolia Brissot
Iron overload pathophysiology has benefited from significant advances in the knowledge of iron metabolism and in molecular genetics. As a consequence, iron overload nosology has been revisited. The hematologist may be confronted to a number of iron overload syndromes, from genetic or acquired origin. Hemochromatoses, mostly but not exclusively related to the HFE gene, correspond to systemic iron overload of genetic origin in which iron excess is the consequence of hepcidin deficiency, hepcidin being the hormone regulating negatively plasma iron...
August 15, 2018: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
Justin Pollara, R Whitney Edwards, Liwen Lin, Victoria A Bendersky, Todd V Brennan
Brain death that occurs in the setting of deceased organ donation for transplantation is associated with systemic inflammation of unknown origin. It has recently been recognized that mitochondria-derived damage-associated molecular patterns (mtDAMPs) released into the circulation in the setting of trauma and tissue injury are associated with a systemic inflammatory response. We examined the blood of deceased organ donors and found elevated levels of inflammatory cytokines and chemokines that correlated with levels of mtDAMPs...
August 9, 2018: JCI Insight
Ricky H Bhogal, Christopher J Weston, Susanne Velduis, Henri G D Leuvenink, Gary M Reynolds, Scott Davies, Luu Nyguet-Thin, Mohammed Alfaifi, Emma L Shepard, Yuri Boteon, Lorraine Wallace, Ye H Oo, David H Adams, Darius F Mirza, Hynek Mergental, Gillian Muirhead, Barnaby T F Stephenson, Simon C Afford
Ischemia/reperfusion injury (IRI) is the main cause of complications following liver transplantation. Reactive oxygen species (ROS) were thought to be the main regulators of IRI. However, recent studies demonstrate that ROS activate the cytoprotective mechanism of autophagy promoting cell survival. Liver IRI initially damages the liver endothelial cells (LEC), but whether ROS-autophagy promotes cell survival in LEC during IRI is not known. Primary human LEC were isolated from human liver tissue and exposed to an in vitro model of IRI to assess the role of autophagy in LEC...
October 2018: Liver Transplantation
Hung Nguyen, Sydney Zarriello, Mira Rajani, Julian Tuazon, Eleonora Napoli, Cesar V Borlongan
Stroke remains a major cause of death and disability in the United States and around the world. Solid safety and efficacy profiles of novel stroke therapeutics have been generated in the laboratory, but most failed in clinical trials. Investigations into the pathology and treatment of the disease remain a key research endeavor in advancing scientific understanding and clinical applications. In particular, cell-based regenerative medicine, specifically stem cell transplantation, may hold promise as a stroke therapy, because grafted cells and their components may recapitulate the growth and function of the neurovascular unit, which arguably represents the alpha and omega of stroke brain pathology and recovery...
July 21, 2018: International Journal of Molecular Sciences
Mohammad Javad Ahmadi Lahijani, Mohammad Kafi, Ahmad Nezami, Jafar Nabati, Mohammad Zare Mehrjerdi, Shirin Shahkoomahally, John Erwin
Rising atmospheric CO2 concentrations are expected to impact the productivity of plants. Cultivars demonstrate different responses to CO2 levels, hence, screening and recognizing the cultivars with a higher capacity for translocation of photoassimilates would certainly be beneficiary. To investigate the interactive impact of enhancing CO2 on physiology, cellular fine structure and photoassimilate translocation of micro-propagated potato plantlets, plantlets (cvs. Agria and Fontane) were grown under ambient (400 ppm) or elevated (800 ppm) CO2 concentrations in controlled environments...
September 2018: Plant Physiology and Biochemistry: PPB
Junwon Lee, Sang-Hwi Choi, Young-Beom Kim, Ikhyun Jun, Jin Jea Sung, Dongjin R Lee, Yang In Kim, Myung Soo Cho, Suk Ho Byeon, Dae-Sung Kim, Dong-Wook Kim
Purpose: We aimed to establish an efficient method for retinal ganglion cell (RGC) differentiation from human pluripotent stem cells (hPSCs) using defined factors. Methods: To define the contribution of specific signal pathways to RGC development and optimize the differentiation of hPSCs toward RGCs, we examined RGC differentiation in three stages: (1) eye field progenitors expressing the eye field transcription factors (EFTFs), (2) RGC progenitors expressing MATH5, and (3) RGCs expressing BRN3B and ISLET1...
July 2, 2018: Investigative Ophthalmology & Visual Science
Maria N Sanz, Emilie Farine, Petra Niederberger, Natalia Méndez-Carmona, Rahel K Wyss, Maria Arnold, Patrik Gulac, Georg M Fiedler, Mélanie Gressette, Anne Garnier, Thierry P Carrel, Hendrik T Tevaearai Stahel, Sarah L Longnus
Donation after circulatory death (DCD) holds great promise for improving cardiac graft availability; however, concerns persist regarding injury following warm ischemia, after donor circulatory arrest, and subsequent reperfusion. Application of preischemic treatments is limited for ethical reasons; thus, cardioprotective strategies applied at graft procurement (reperfusion) are of particular importance in optimizing graft quality. Given the key role of mitochondria in cardiac ischemia-reperfusion injury, we hypothesize that 3 reperfusion strategies-mild hypothermia, mechanical postconditioning, and hypoxia, when briefly applied at reperfusion onset-provoke mitochondrial changes that may underlie their cardioprotective effects...
July 18, 2018: American Journal of Transplantation
Kuan-Xue Sun, Hong-Wei Xia
The aim of the present study was to elucidate the anticancer effect of pachymic acid (PA) in gastric cancer SGC-7901 cells and the potential molecular mechanisms involved. Cell Count kit-8 assay was performed to examine the effect of PA on the cell proliferation of SGC-7901 cells. Cell cycle, cell apoptosis, mitochondria membrane potential (Dψm) and reactive oxygen species (ROS) analysis were assessed by flow cytometry, respectively. DNA fragmentation assay was performed by Hoechst 33258 staining. Western blotting was performed to detect the effect of various concentrations of PA on the levels of BCL2 associated X protein (Bax) expression as well as B-cell lymphoma 2 (Bcl-2), cytochrome C (cyt-c) and caspase-3 in SGC-7901 cells...
August 2018: Oncology Letters
Yuanjing Li, Shengxin Xu, Ming Cai
The partial pressure of oxygen (PO2 ) in the tumor microenvironment directly affects tumor sensitivity to chemotherapy. In the present study, a lithium phthalocyanine probe was implanted into MCF-7 human breast cancer cells, followed by transplant of the cells into nude mice. The present study used an electron paramagnetic resonance (EPR) oximetry measuring technique to dynamically monitor PO2 in the tumor microenvironment prior to and following chemotherapy, and aimed to determine the precise time window in which the microenvironmental PO2 peaked following chemotherapy...
August 2018: Oncology Letters
Atif Abdulwahab A Oyouni, Shalini Saggu, Ehab Tousson, Hasibur Rehman
Tacrolimus (TAC) is used sporadically as an immunosuppressive agent for organ transplantation, but its clinical used is limited due to its marked nephrotoxicity. Ocimum basilicum L. (Lamiaceae) (OB) had been shown to possess antioxidant, anti-inflammatory and nephroprotective activity, and effective at improving renal inflammation and glomerular. In our study, we aim to evaluate the efficacy of the OB against TAC-induced mitochondrial nephrotoxicity in CD1 mice. Mice were randomly divided into four groups. Group 1 (control group); administered orally with normal saline (1 mL/kg) for two weeks; Group 2 (OB extract treated-group) (500 mg/kg b...
2018: Toxicology Reports
Leilei Bao, Mingjian Zhang, Shu Han, Yangyang Zhan, Wenyuan Guo, Fei Teng, Fang Liu, Meng Guo, Luding Zhang, Guoshan Ding, Quanxiang Wang
BACKGROUND/AIMS: Hepatocellular carcinoma (HCC) is one of the most common human malignant diseases in the world, and the mechanisms underlying HCC carcinogenesis and progression need further investigation. MicroRNAs play important roles in the development of cancer, and miR-500a is suggested to be deregulated in some types of cancer. However, the underlying molecular mechanisms of miR-500a in HCC remain unknown. METHODS: The expression of miR-500a in HCC was analyzed in The Cancer Genome Atlas (TCGA) database and examined in 33 pairs of HCC tissues and matched nontumor tissues...
2018: Cellular Physiology and Biochemistry
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