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https://www.readbyqxmd.com/read/28935902/targeting-neph1-and-zo-1-protein-protein-interaction-in-podocytes-prevents-podocyte-injury-and-preserves-glomerular-filtration-function
#1
Amin Sagar, Ehtesham Arif, Ashish Kumar Solanki, Pankaj Srivastava, Michael G Janech, Seok-Hyung Kim, Joshua H Lipschutz, Sang-Ho Kwon, Ashish, Deepak Nihalani
Targeting protein-protein interaction (PPI) is rapidly becoming an attractive alternative for drug development. While drug development commonly involves inhibiting a PPI, in this study, we show that stabilizing PPI may also be therapeutically beneficial. Junctional proteins Neph1 and ZO-1 and their interaction is an important determinant of the structural integrity of slit diaphragm, which is a critical component of kidney's filtration system. Since injury induces loss of this interaction, we hypothesized that strengthening this interaction may protect kidney's filtration barrier and preserve kidney function...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935143/vitamin-e-treatment-decreases-muscle-injury-in-mdx-mice
#2
Rafael Dias Mâncio, Túlio de Almeida Hermes, Aline Barbosa Macedo, Daniela Sayuri Mizobuti, Amanda Harduim Valduga, Ian Feller Rupcic, Elaine Minatel
OBJECTIVE: Oxidative stress, in addition to the absence of the dystrophin protein, has been considered an important regulator of Duchenne muscular dystrophy (DMD). Vitamin E presents an important role as a potent antioxidant and in preserving the integrity of the cell membrane. In this study, we evaluated the effects of vitamin E therapy on some physiological pathways that can contribute to muscle injury in the diaphragm muscle of mdx mice (the experimental model of DMD) such as CK levels, inflammatory response, oxidative stress, and the enzymatic antioxidant system...
November 2017: Nutrition
https://www.readbyqxmd.com/read/28917004/critical-illness-associated-diaphragm-weakness
#3
REVIEW
Martin Dres, Ewan C Goligher, Leo M A Heunks, Laurent J Brochard
Diaphragm weakness is highly prevalent in critically ill patients. It may exist prior to ICU admission and may precipitate the need for mechanical ventilation but it also frequently develops during the ICU stay. Several risk factors for diaphragm weakness have been identified; among them sepsis and mechanical ventilation play central roles. We employ the term critical illness-associated diaphragm weakness to refer to the collective effects of all mechanisms of diaphragm injury and weakness occurring in critically ill patients...
September 15, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28887062/diaphragm-dysfunction-in-critical-illness
#4
REVIEW
Gerald S Supinski, Peter E Morris, Sanjay Dhar, Leigh Ann Callahan
The diaphragm is the major muscle of inspiration and its function is critical for optimal respiration. Diaphragmatic failure has long been recognized as a major contributor to death in a variety of systemic neuromuscular disorders. More recently, it is increasingly apparent that diaphragm dysfunction is present in a high percentage of critically ill patients, and is associated with increased morbidity and mortality. In these patients, diaphragm weakness is thought to develop from disuse secondary to ventilator-induced diaphragm inactivity, and as a consequence of the effects of systemic inflammation, including sepsis...
September 5, 2017: Chest
https://www.readbyqxmd.com/read/28876673/outcomes-of-failure-of-selective-nonoperative-management-of-penetrating-abdominal-trauma-hrec-ref-679-2013
#5
P H Navsaria, A J Nicol, S Edu, H Joosten, N Almgla, S Sobnach, D McPherson, A Al-Sayari
BACKGROUND: Selective nonoperative management (NOM) of penetrating abdominal trauma is routinely managed in our trauma center. METHOD: All patients for the period 01 May 2015-15 June 2016 who presented with a penetrating abdominal injury were prospectively entered into an ethics approved database, Ethrapp, and retrospectively reviewed. The patients were categorised into 3 groups: immediate laparotomy, successful NOM and failed NOM. Outcomes included: postoperative complications, mortality and length of hospital stay...
June 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28876661/the-use-of-laparoscopy-in-managing-penetrating-thoracoabdominal-injuries-in-africa-83-cases-reviewed
#6
M Z Koto, F Mosai, O Y Matsevych
BACKGROUND: The use of laparoscopy in managing haemodynamically stable patients with penetrating thoracoabdominal injuries in developed countries is wildly practised, but in Africa the use of laparoscopy is still in its infancy stage. METHOD: A retrospective analysis of prospectively collected data of patients presenting with penetrating thoracoabdominal injuries was done. All patients offered laparoscopic exploration and repair from January 2012 to December 2015 at Dr George Mukhari Academic Hospital were analysed...
June 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28876604/the-use-of-laparoscopy-in-managing-penetrating-thoracoabdominal-injuries-in-africa-83-cases-reviewed
#7
F Mosai
BACKGROUND: The use of laparoscopy in managing haemodynamically stable patients with penetrating thoracoabdominal injuries in developed countries is wildly practiced, but in Africa the use of laparoscopy is still in its infancy stage. We reviewed a single centre experience in using laparoscopy in Africa for management of patients with penetrating diaphragmatic injuries with or without associated intra-abdominal injuries. METHOD: A retrospective analysis of prospectively collected data of patients presenting with penetrating thoracoabdominal injuries was done...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28852159/loss-of-the-podocyte-glucocorticoid-receptor-exacerbates-proteinuria-after-injury
#8
Han Zhou, Xuefei Tian, Alda Tufro, Gilbert Moeckel, Shuta Ishibe, Julie Goodwin
Nephrotic syndrome is a common disorder in adults and children whose etiology is largely unknown. Glucocorticoids remain the mainstay of therapy in most cases, though their mechanism of action remains poorly understood. Emerging evidence suggests that immunomodulatory therapies used in nephrotic syndrome directly target the podocytes. To study how steroids directly affect the podocytes in the treatment of proteinuria, we created a mouse model with podocyte-specific deletion of the glucocorticoid receptor. The podocyte-specific glucocorticoid receptor (GR) knockout mice had similar renal function and protein excretion compared to wild type...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28844175/diaphragm-and-intercostal-muscle-activity-following-mid-cervical-spinal-cord-contusion-in-the-rat
#9
Ming-Han Wen, Kun-Ze Lee
The present study was designed to investigate the diaphragm and intercostal muscle activity following unilateral mid-cervical spinal cord contusion in rats. Electromyogram (EMG) activity of the bilateral diaphragm and T2 intercostal muscle was measured in anesthetized and spontaneously breathing rats. Unilateral mid-cervical contusion caused an immediate reduction in inspiratory bursting in the bilateral diaphragm and intercostal muscles. From 3 days to 8 weeks post-contusion, the contused animals displayed significantly lower tidal volume than uninjured animals, regardless of the time point after injury...
August 26, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28828367/spontaneous-breathing-a-double-edged-sword-to-handle-with-care
#10
REVIEW
Tommaso Mauri, Barbara Cambiaghi, Elena Spinelli, Thomas Langer, Giacomo Grasselli
In acute hypoxemic respiratory failure (AHRF) and acute respiratory distress syndrome (ARDS) patients, spontaneous breathing is associated with multiple physiologic benefits: it prevents muscles atrophy, avoids paralysis, decreases sedation needs and is associated with improved hemodynamics. On the other hand, in the presence of uncontrolled inspiratory effort, severe lung injury and asynchronies, spontaneous ventilation might also worsen lung edema, induce diaphragm dysfunction and lead to muscles exhaustion and prolonged weaning...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28822540/life-threatening-complications-and-mortality-of-minimally-invasive-pectus-surgery
#11
André Hebra, Robert E Kelly, Marcelo M Ferro, Mustafa Yüksel, Jose Ribas M Campos, Donald Nuss
The prevalence and type of life-threatening complications related to the minimally invasive repair of pectus excavatum (MIRPE) and bar removal are unknown and underreported. The purpose of this communication is to make surgeons aware of the risk of these life threatening complications as well as the modifications which have been developed to prevent them. METHODS: Data related to life-threatening complications of Pectus Excavatum (PE) patients was obtained from four sources: 1. A survey of Chest Wall International Group (CWIG) surgeons who specialize in repairing congenital chest wall malformations, 2...
July 31, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28814668/injury-induced-actin-cytoskeleton-reorganization-in-podocytes-revealed-by-super-resolution-microscopy
#12
Hani Y Suleiman, Robyn Roth, Sanjay Jain, John E Heuser, Andrey S Shaw, Jeffrey H Miner
The architectural integrity of tissues requires complex interactions, both between cells and between cells and the extracellular matrix. Fundamental to cell and tissue homeostasis are the specific mechanical forces conveyed by the actomyosin cytoskeleton. Here we used super-resolution imaging methods to visualize the actin cytoskeleton in the kidney glomerulus, an organized collection of capillaries that filters the blood to make the primary urine. Our analysis of both mouse and human glomeruli reveals a network of myosin IIA-containing contractile actin cables within podocyte cell bodies and major processes at the outer aspects of the glomerular tuft...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28790924/effects-of-ionizing-irradiation-on-mouse-diaphragmatic-skeletal-muscle
#13
Tingyang Zhou, Lanchun Lu, Shiyong Wu, Li Zuo
Undesirable exposure of diaphragm to radiation during thoracic radiation therapy has not been fully considered over the past decades. Our study aims to examine the potential biological effects on diaphragm induced by radiation. One-time ionizing irradiation of 10 Gy was applied either to the diaphragmatic region of mice or to the cultured C2C12 myocytes. Each sample was then assayed for muscle function, oxidative stress, or cell viability on days 1, 3, 5, and 7 after irradiation. Our mouse model shows that radiation significantly reduced muscle function on the 5th and 7th days and increased reactive oxygen species (ROS) formation in the diaphragm tissue from days 3 to 7...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790100/missed-diaphragmatic-injury-after-blunt-trauma-presenting-with-colonic-strangulation-a-rare-scenario
#14
Atish Kumar, Dinesh Bagaria, Amulya Ratan, Amit Gupta
Diaphragmatic rupture occurs in 4%-5% cases of thoracoabdominal injuries. It may present acutely, in a delayed fashion or as a complicated hernia. We are describing the case of a young male presenting in respiratory distress with history of chest trauma 1.5 years back. On investigation, he was found to have left side diaphragmatic hernia containing gangrenous colon with lung collapse. The patient underwent successful operative intervention and discharged after 25 days of hospital stay. Record review suggested that the above mentioned diaphragm injury was missed in his evaluation 1...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28790008/compensatory-effects-following-unilateral-diaphragm-paralysis
#15
Obaid U Khurram, Gary C Sieck, Carlos B Mantilla
Injury to nerves innervating respiratory muscles such as the diaphragm muscle results in significant respiratory compromise. Electromyography (EMG) and transdiaphragmatic pressure (Pdi) measurements reflect diaphragm activation and force generation. Immediately after unilateral diaphragm denervation (DNV), ventilatory behaviors can be accomplished without impairment, but Pdi generated during higher force non-ventilatory behaviors is significantly decreased. We hypothesized that 1) the initial reduction in Pdi during higher force behaviors after DNV is ameliorated after 14 days, and 2) changes in Pdi over time after DNV are associated with concordant changes in contralateral diaphragm EMG activity and ventilatory parameters...
August 5, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28781878/bilateral-diaphragmatic-paresis-following-pediatric-liver-transplantation
#16
Jillian Olmscheid, Helena Molero, William Gershan, Nadir Demirel
BACKGROUND: Although diaphragm paresis or paralysis is fairly common following cardiac procedures; it is a less common complication following liver transplantation. Unilateral diaphragm paresis, usually right sided, has been described following liver transplantation in adults and has been rarely described in children. PURPOSE: Diaphragmatic injury following LT is often unrecognized and is typically unilateral, involving the right hemidiaphragm. Bilateral diaphragm dysfunction following liver transplantation in children is a rare complication...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28775002/kindlin-2-association-with-rho-gdp-dissociation-inhibitor-%C3%AE-suppresses-rac1-activation-and-podocyte-injury
#17
Ying Sun, Chen Guo, Ping Ma, Yumei Lai, Fan Yang, Jun Cai, Zhehao Cheng, Kuo Zhang, Zhongzhen Liu, Yeteng Tian, Yue Sheng, Ruijun Tian, Yi Deng, Guozhi Xiao, Chuanyue Wu
Alteration of podocyte behavior is critically involved in the development and progression of many forms of human glomerular diseases. The molecular mechanisms that control podocyte behavior, however, are not well understood. Here, we investigated the role of Kindlin-2, a component of cell-matrix adhesions, in podocyte behavior in vivo Ablation of Kindlin-2 in podocytes resulted in alteration of actin cytoskeletal organization, reduction of the levels of slit diaphragm proteins, effacement of podocyte foot processes, and ultimately massive proteinuria and death due to kidney failure...
August 3, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28767799/retrospective-analysis-of-103-diaphragmatic-injuries-in-patients-operated-in-a-trauma-center
#18
Lucas Figueiredo Cardoso, Marcus Vinícius Capanema Gonçalves, Carla Jorge Machado, Vivian Resende, Michael Pereira Fernandes, Mario Pastore-Neto, Renato Gomes Campanati, Guilherme Victor Oliveira Pimenta Reis
Objective: to analyze the factors associated with death in patients with diaphragmatic injury treated at a trauma reference hospital. Methods: we conducted a retrospective study of patients with diaphragm injury attended at the Risoleta Tolentino Neves Hospital of the Federal University of Minas Gerais, between January 2010 and December 2014. We used The Collector® database of trauma records (MD, USA). We gathered data on demographics, location of the diaphragmatic lesion, site and number of associated lesions, type of therapeutic approach, complications and Injury Severity Score (ISS)...
May 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/28740595/imaging-guided-percutaneous-interventions-in-hepatic-dome-lesions-tips-and-tricks
#19
REVIEW
Avinash Kambadakone, Vinit Baliyan, Hamed Kordbacheh, Raul N Uppot, Ashraf Thabet, Debra A Gervais, Ronald S Arellano
Percutaneous hepatic interventions are generally safe given the fact that liver closely abuts the abdominal wall and hence it is easily accessible. However, the superior portion of liver, adjacent to the diaphragm, commonly referred as the "hepatic dome", presents unique challenges for interventionists. Percutaneous access to the hepatic dome may be restricted by anatomical factors and special considerations may be required to avoid injury to the surrounding organs. The purpose of this review article is to discuss certain specific maneuvers and techniques that can enhance the success and safety of interventions in the hepatic dome...
July 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28736096/pneumoperitoneum-by-inguinal-laceration-after-traffic-accident
#20
Daesung Lim, Soo Hoon Lee, Sang Bong Lee, TaeJin Park
BACKGROUND: The leading cause of surgical pneumoperitoneum is hollow viscus perforation, which accounts for approximately 90% of cases. A nonsurgical etiology may account for up to about 10% of the causes of pneumoperitoneum. However, a pneumoperitoneum often poses significant management dilemmas for surgeons, especially when signs of peritonitis are absent or when the cause is unknown prior to laparotomy. We present the first case of pneumoperitoneum due to inguinal laceration without viscus perforation after a traffic accident...
July 20, 2017: Journal of Emergency Medicine
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