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Myonecrosis

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https://www.readbyqxmd.com/read/28527998/molecular-cloning-and-structural-modelling-of-gamma-phospholipase-a2-inhibitors-from-bothrops-atrox-and-micrurus-lemniscatus-snakes
#1
Carina G Picelli, Rafael J Borges, Carlos A H Fernandes, Fabio M Matioli, Carla F C Fernandes, Juliana C Sobrinho, Rudson J Holanda, Luiz S Ozaki, Anderson M Kayano, Leonardo A Calderon, Marcos R M Fontes, Rodrigo G Stábeli, Andreimar M Soares
Phospholipases A2 inhibitors (PLIs) produced by venomous and non-venomous snakes play essential role in this resistance. These endogenous inhibitors may be classified by their fold in PLIα, PLIβ and PLIγ. Phospholipases A2 (PLA2s) develop myonecrosis in snake envenomation, a consequence that is not efficiently neutralized by antivenom treatment. This work aimed to identify and characterize two PLIs from Amazonian snake species, Bothrops atrox and Micrurus lemniscatus. Liver tissues RNA of specimens from each species were isolated and amplified by RT-PCR using PCR primers based on known PLIγ gene sequences, followed by cloning and sequencing of amplified fragments...
May 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28481405/hsp70-gene-polymorphisms-in-farmed-marine-shrimp-litopenaeus-vannamei-populations-exposed-to-white-spot-disease-and-infectious-myonecrosis
#2
A L Ferreira, R Maggioni, D Conceição, L M Perazzolo, R L Petersen
Single nucleotide polymorphisms (SNPs) are the best genetic markers for associative studies of the immune system in invertebrates. In the marine shrimp Litopenaeus vannamei, SNPs linked to disease resistance have been reported for some genes, such as hemocyanin, anti-lipopolysaccharide factor, and heat-shock protein 70 (Hsp70). In the present study, polymorphisms in the Hsp70 gene were investigated among three commercial L. vannamei populations bred in Northeast and South Brazil. The first population withstood a strong white spot disease outbreak; the second population suffered extended exposure to infectious myonecrosis; the third population was a high health population, which was experimentally infected with white spot syndrome virus (WSSV) in the present study...
May 4, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28469499/a-case-of-statin-associated-autoimmune-myopathy
#3
Alexander J Sweidan, Anthony Leung, Cassandra J Kaiser, Sarah J Strube, Andrei N Dokukin, Stephen Romansky, Sassan Farjami
A 70-year-old previously independent man developed progressive proximal leg weakness resulting in a fall at home suffering traumatic brain injury. He was prescribed a statin medication two years prior, but this was discontinued on admission to the hospital due to concern for statin myopathy. His weakness continued to progress while in acute rehabilitation, along with the development of dysphagia requiring placement of gastrostomy tube and respiratory failure requiring tracheostomy. Corticosteroids and intravenous immunoglobulin were administered without response...
2017: Clinical Medicine Insights. Case Reports
https://www.readbyqxmd.com/read/28439287/rattlesnake-crotalus-molossus-nigrescens-venom-induces-oxidative-stress-on-human-erythrocytes
#4
David Meléndez-Martínez, Juan Manuel Muñoz, Guillermo Barraza-Garza, Martha Sandra Cruz-Peréz, Ana Gatica-Colima, Emilio Alvarez-Parrilla, Luis Fernando Plenge-Tellechea
BACKGROUND: Globally, snake envenomation is a well-known cause of death and morbidity. In many cases of snakebite, myonecrosis, dermonecrosis, hemorrhage and neurotoxicity are present. Some of these symptoms may be provoked by the envenomation itself, but others are secondary effects of the produced oxidative stress that enhances the damage produced by the venom toxins. The only oxidative stress effect known in blood is the change in oxidation number of Fe (from ferrous to ferric) in hemoglobin, generating methemoglobin but not in other macromolecules...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28427959/beneficial-effects-of-heparin-and-l-arginine-on-dermonecrosis-effect-induced-by-vipera-lebetina-venom-involvement-of-no-in-skin-regeneration
#5
Nouara Bennacef-Heffar, Fatima Laraba-Djebari
It is well known that snake venoms such as Viperidae caused severe local effects such as hemorrhage, myonecrosis and dermonecrosis which can lead to permanent tissue loss or the disability. The aim of this study is to evaluate the skin regeneration using heparin and l-arginine as well as the dermonecrotic effects induced by Vipera lebetina venom (VLV). To better understand the toxic effects induced by VLV and to prevent or treat these effects, we evaluate the local effects and the skin regeneration with or without drugs...
April 17, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28375162/the-protective-effect-of-apigenin-on-myocardial-injury-in-diabetic-rats-mediating-activation-of-the-ppar-%C3%AE-pathway
#6
Umesh B Mahajan, Govind Chandrayan, Chandragouda R Patil, Dharamvir Singh Arya, Kapil Suchal, Yogeeta O Agrawal, Shreesh Ojha, Sameer N Goyal
We substantiated the role of peroxisome proliferator-activated receptor-γ (PPAR-γ) activation in the protective effect of apigenin against the myocardial infarction (MI) in diabetic rats. Diabetes was induced by intraperitoneal administration of a single dose of streptozotocin (55 mg/kg). The study groups included diabetic rats receiving vehicle, apigenin (75 mg/kg/day, orally), GW9662 (1 mg/kg/day, intraperitoneally), and a combination of apigenin and GW9662 for 14 days. The MI was induced in all the study groups except the diabetic control group by subcutaneous injection of 100 mg/kg/day of isoproterenol on the two terminal days...
April 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28347748/local-and-hematological-alterations-induced-by-philodryas-olfersii-snake-venom-in-mice
#7
Juliana S Oliveira, Luciana B Sant'Anna, Manoel C Oliveira Junior, Pamella R M Souza, Adilson S Andrade Souza, Wellington Ribeiro, Rodolfo P Vieira, Stephen Hyslop, José C Cogo
Envenomation by the South American opisthoglyphous snake Philodryas olfersii causes local pain, edema, erythema and ecchymosis; systemic envenomation is rare. In this work, we examined the inflammatory activity of P. olfersii venom (10, 30 and 60 μg) in mouse gastrocnemius muscle 6 h after venom injection. Intramuscular injection of venom did not affect hematological parameters such as red cell count, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration...
June 15, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28347665/discovery-of-small-molecule-inhibitors-for-the-snake-venom-metalloprotease-bap1-using-in-silico-and-in-vitro-tests
#8
Fabian Villalta-Romero, Luiz Borro, Boris Mandic, Teresa Escalante, Alexandra Rucavado, Jose María Gutiérrez, Goran Neshich, Ljubica Tasic
Snakebites represent an important public health problem, with a great number of victims with permanent sequelae or fatal outcomes, particularly in rural, agriculturally active areas. The snake venom metalloproteases (SVMPs) are the principal proteins responsible for some clinically-relevant effects, such as local and systemic hemorrhage, dermonecrosis, and myonecrosis. Because of the difficulties in neutralizing them rapidly and locally by antivenoms, the search and design of small molecules as inhibitors of SVMPs are proposed...
May 1, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28323644/pediatric-acute-compartment-syndrome
#9
Kristin S Livingston, Michael P Glotzbecker, Benjamin J Shore
Pediatric acute compartment syndrome (PACS) is a clinical entity that must be carefully differentiated from the adult version (ie, acute compartment syndrome). Healthcare providers must understand the variable etiologies of PACS, of which trauma is the most common but can also include vascular insult, infection, surgical positioning, neonatal phenomena, overexertion, and snake and insect bites. In addition to the unique etiologies of PACS, providers must also recognize the different signs and symptoms of PACS...
May 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28318191/a-fatal-clostridium-perfringens-infection-with-hemolysis-after-chemotherapy-in-an-adolescent
#10
Musa G Kukul, Kısmet Ciki, Eda Karadag-Oncel, Ali B Cengiz, Baris Kuskonmaz, Betul Tavil, Selman Kesici
Gas gangrene, clostridial myonecrosis, is one of the most serious infectious diseases, characterized by rapidly progressive destruction of deep soft tissues and production of gas within the tissues. We presented a case of fatal spontaneous gas gangrene due to Clostridium perfringens in a patient with acute lymphoblastic leukemia during remission induction chemotherapy phase.
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28306718/experimental-bothrops-atrox-envenomation-efficacy-of-antivenom-therapy-and-the-combination-of-bothrops-antivenom-with-dexamethasone
#11
Gabriella Neves Leal Santos Barreto, Sâmella Silva de Oliveira, Isabelle Valle Dos Anjos, Hipocrates de Menezes Chalkidis, Rosa Helena Veras Mourão, Ana Maria Moura-da-Silva, Ida Sigueko Sano-Martins, Luis Roberto de Camargo Gonçalves
Bothrops atrox snakes are the leading cause of snake bites in Northern Brazil. The venom of this snake is not included in the antigen pool used to obtain the Bothrops antivenom. There are discrepancies in reports on the effectiveness of this antivenom to treat victims bitten by B. atrox snakes. However, these studies were performed using a pre-incubation of the venom with the antivenom and, thus, did not simulate a true case of envenomation treatment. In addition, the local lesions induced by Bothrops venoms are not well resolved by antivenom therapy...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28281830/imaging-of-musculoskeletal-manifestations-in-sickle-cell-disease-patients
#12
REVIEW
Vijaya Kosaraju, Alok Harwani, Sasan Partovi, Nicholas Bhojwani, Vasant Garg, Sabarish Ayyappan, Christos Kosmas, Mark Robbin
Sickle cell disease (SCD) is a hereditary red cell disorder with clinical manifestations secondary to sickling or crescent-shaped distortion of the red blood cells. Major clinical manifestations of SCD include haemolytic anaemia and vaso-occlusive phenomena resulting in ischaemic tissue injury and organ damage. Chronic sequelae of the anaemia and vaso-occlusive processes involving the musculoskeletal system include complications related to extramedullary haematopoiesis, osteonecrosis, myonecrosis and osteomyelitis...
May 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28260767/correlation-of-systemic-inflammatory-status-and-cardiac-myonecrosis-in-patients-undergoing-percutaneoues-coronary-intervention
#13
M K Mohsin, M U Ahmed
Increased levels of the inflammatory biomarker high-sensitivity C-reactive protein predict cardiovascular events. Pre-Percutaneoues coronary intervention (PCI) plasma hs-CRP concentration has been reported to influence both short and long term outcome after percutaneoues coronary intervention (PCI). Studies have reported association between pre-PCI CRP and PCI induced cardiac myonecrosis evaluated by sensitive marker of myocardial injury. The present study attempts to evaluate the influence of pre-PCI CRP levels, factors related to the procedure and ongoing medications on the event of post-PCI cardiac myonecrosis...
January 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28243350/assessment-of-skeletal-muscle-perfusion-using-contrast-enhanced-ultrasonography-technical-note
#14
Adnan I Qureshi, Muhammad A Saleem, Emrah Aytac, Shawn S Wallery
BACKGROUND: Intravenous contrast-enhanced ultrasonography is a recently developed technique for assessment of tissue perfusion, but has not been used for assessment of skeletal muscle perfusion. METHODS: We studied a 42-year-old woman in whom myonecrosis was suspected due to systemic vasculitis and ischemia. The biceps brachii (right) and quadriceps femoris (vastus medialis) on right-hand side and subsequently left-hand side were imaged. Intravenous bolus of activated perflutren lipid microspheres was injected and B-Flow color mode (brown color) was used within a selected region of interest to image the passage of contrast through muscle parenchyma throughout three cardiac cycles...
January 2017: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/28210987/antiviral-activity-of-ctn-15-34-a-cathelicidin-derived-eicosapeptide-against-infectious-myonecrosis-virus-in-litopenaeus-vannamei-primary-hemocyte-cultures
#15
P R N Vieira-Girão, C B Falcão, I R C B Rocha, H M R Lucena, F H F Costa, G Rádis-Baptista
The shrimp farming has been converted into a mature aquaculture industry dealing with over millions of metric tonnes of processed commodities. Nevertheless, the global shrimp productions are constantly threatened by disease outbreaks, mainly triggered by rapidly disseminating viruses. Infectious myonecrosis virus (IMNV) is one of these epizootic agents affecting shrimp production in Brazil, of which no treatment exists. Herein, the antiviral activity against IMNV of an eicosapeptide, named Ctn[15-34], derived from a member of the cathelicidin family of antimicrobial peptides, was demonstrated...
February 16, 2017: Food and Environmental Virology
https://www.readbyqxmd.com/read/28194628/association-between-ck-mb-area-under-the-curve-and-tranexamic-acid-utilization-in-patients-undergoing-coronary-artery-bypass-surgery
#16
Sean van Diepen, Peter D Merrill, Michel Carrier, Jean-Claude Tardif, Mihai Podgoreanu, John H Alexander, Renato D Lopes
Myonecrosis after coronary artery bypass graft (CABG) surgery is associated with excess mortality. Tranexamic acid (TA), an anti-fibrinolytic agent, has been shown to reduce peri-operative blood loss without increasing the risk of myocardial infarction (MI); however, no large study has examined the association between TA treatment and post-CABG myonecrosis. In the MC-1 to Eliminate Necrosis and Damage in Coronary Artery Bypass Graft Surgery II trial, inverse probability weighting of the propensity to receive TA was used to test for differences among the 656 patients receiving and 770 patients not receiving TA...
May 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28183731/c-septicum-complicating-hemolytic-uremic-syndrome-survival-without-surgical-intervention
#17
Rachel M Engen, Elizabeth Y Killien, Jessica L Davis, Jordan M Symons, Silvia M Hartmann
Clostridium septicum is an anaerobic bacterium that causes rapidly progressive myonecrosis, bacteremia, and central nervous system infection. It has been reported as a complication of Escherichia coli hemolytic uremic syndrome (HUS) in 8 children worldwide; 5 children died, and the 3 reported survivors had surgically treated disease. We present 3 cases of C septicum complicating HUS in children, including the first 2 reported cases of survival without surgical intervention. All patients presented with classic cases of HUS with initial clinical improvement followed by deterioration...
March 2017: Pediatrics
https://www.readbyqxmd.com/read/28161653/low-level-laser-therapy-lllt-accelerates-the-sternomastoid-muscle-regeneration-process-after-myonecrosis-due-to-bupivacaine
#18
Cristiane Neves Alessi Pissulin, Ana Angélica Henrique Fernandes, Alejandro Manuel Sanchez Orellana, Renata Calciolari Rossi E Silva, Selma Maria Michelin Matheus
BACKGROUND: Because of its long-lasting analgesic action, bupivacaine is an anesthetic used for peripheral nerve block and relief of postoperative pain. Muscle degeneration and neurotoxicity are its main limitations. There is strong evidence that low-level laser therapy (LLLT) assists in muscle and nerve repair. The authors evaluated the effects of a Gallium Arsenide laser (GaAs), on the regeneration of muscle fibers of the sternomastoid muscle and accessory nerve after injection of bupivacaine...
March 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28155167/inhibition-of-snake-venom-metalloproteinase-by-%C3%AE-lactoglobulin-peptide-from-buffalo-bubalus-bubalis-colostrum
#19
Ashok Arpitha, M Sebastin Santhosh, A C Rohit, K S Girish, D Vinod, H S Aparna
Bioactive peptide research has experienced considerable therapeutic interest owing to varied physiological functions, efficacy in excretion, and tolerability of peptides. Colostrum is a rich natural source of bioactive peptides with many properties elucidated such as anti-thrombotic, anti-hypertensive, opioid, immunomodulatory, etc. In this study, a variant peptide derived from β-lactoglobulin from buffalo colostrum was evaluated for the anti-ophidian property by targeting snake venom metalloproteinases. These are responsible for rapid local tissue damages that develop after snakebite such as edema, hemorrhage, myonecrosis, and extracellular matrix degradation...
February 2, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28151765/necrotizing-soft-tissue-infection-or-sweet-syndrome-surgery-versus-no-surgery-a-case-report
#20
Tiffany M N Otero, Samuel R Barber, D Dante Yeh, Sadeq A Quraishi
The authors report a case of necrotizing Sweet syndrome in a 24-year-old transsexual male who presented with recurrent myonecrosis of the neck/upper chest. On index admission, computer tomography revealed gas and fat stranding of the sternocleidomastoid and pectoralis major muscle-findings suggestive of a necrotizing soft tissue infection. Despite debridement procedures and intravenous antibiotic therapy, myonecrosis of the affected areas persisted. Evaluation of tissue samples by dermatopathology revealed neutrophilic infiltration extending into the dermis and muscle necrosis, findings consistent with necrotizing Sweet syndrome...
April 1, 2017: A & A Case Reports
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