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Shock—Epidiomology

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https://www.readbyqxmd.com/read/29161707/a-novel-animal-model-simulating-the-beginning-of-combat-exposure
#1
Dongsoo Kim, Chang Yul Kim, Hyojin Koo, Yong Heo, Kicheol Cheon
OBJECTIVE: Predator stress, social defeat stress, and fear conditioning animal models have been applied to investigate combat-related posttraumatic stress disorder (PTSD). However, no animal model psychopharmacological studies have investigated prevention of somatization of increased mental stress and fatigue at the beginning of combat exposure. This study utilized a novel animal model simulating the beginning of combat exposure that aided specification of a set of biomarkers. METHODS: Psychological stress was induced by both inescapable electric foot shock and noise stimuli...
November 22, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29161635/temperature-dependent-conformational-dynamics-of-cytochrome-c-implications-in-apoptosis
#2
Gurusamy Muneeswaran, Subramanian Kartheeswaran, Kaliappan Muthukumar, Chandran Karunakaran
Heat, electric shock, and burn injuries induce apoptosis by releasing cytochrome c (cyt-c) from mitochondria and by subsequently activating the death protease, caspases-3. During apoptosis, cyt-c undergoes changes in the secondary structure that have been suggested to increase its peroxidase activity. Information about these structural changes will provide better understanding of the apoptotic mechanism. Hence, temperature-dependent conformational dynamics of cyt-c has been investigated through molecular dynamics (MD) simulations to explain the structural changes and to correlate them with its apoptotic behavior...
October 20, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29161052/recurrent-anaphylaxis-in-patient-allergic-to-eggplant-a-case-study
#3
Natalia Ukleja-Sokołowska, Ewa Gawrońska-Ukleja, Magdalena Żbikowska-Gotz, Łukasz Sokołowski, Zbigniew Bartuzi
Eggplant allergy is rare and most of the previously described reactions were mild. In this case report, we present an interesting case of a 27-year-old male who experienced symptoms of anaphylaxis (shortness of breath, and swelling of the face, lips and tongue, which was followed by hypotension, tachycardia of 140/min and a sudden loss of consciousness) several minutes after eating a dish containing backed eggplant. Previously, the patient had experienced symptoms of allergy after eating different types of food, such as salad and chicken in spices...
November 22, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/29160793/a-gal-m%C3%A2%C2%B5s-device-to-evaluate-cell-migratory-response-to-combined-galvano-chemotactic-fields
#4
Shawn Mishra, Maribel Vazquez
Electric fields have been studied extensively in biomedical engineering (BME) for numerous regenerative therapies. Recent studies have begun to examine the biological effects of electric fields in combination with other environmental cues, such as tissue-engineered extracellular matrices (ECM), chemical gradient profiles, and time-dependent temperature gradients. In the nervous system, cell migration driven by electrical fields, or galvanotaxis, has been most recently studied in transcranial direct stimulation (TCDS), spinal cord repair and tumor treating fields (TTF)...
November 21, 2017: Biosensors
https://www.readbyqxmd.com/read/29160522/cardiac-tamponade-in-a-patient-with-severe-dengue-fever
#5
Ana Isabel Vieira Fernandes, Ciro Leite Mendes, Raíssa Holmes Simões, Ana Elisa Vieira Fernandes Silva, Clarissa Barros Madruga, Carlos Alexandre Antunes de Brito, Lucio Roberto Castellano, Marli Tenório Cordeiro
A 26-year-old postpartum female presented with symptoms characteristic of dengue fever on the 16th day of puerperium. On the third day of the illness, the patient presented a clinical picture consistent with shock. Tests determined primary infection with dengue virus serotype 2. Cardiac tamponade was confirmed by echocardiography. This rare manifestation is described in a patient without any associated comorbidity.
September 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29160141/effects-of-mild-blast-traumatic-brain-injury-on-cerebral-vascular-histopathological-and-behavioral-outcomes-in-rats
#6
Uylissa A Rodriguez, Yaping Zeng, Donald James Deyo, Margaret O Parsley, Bridget E Hawkins, Donald S Prough, Douglas DeWitt
To determine the effects of mild blast-induced traumatic brain injury (bTBI), several groups of rats were subjected to blast injury or sham injury in a compressed air-driven shock tube. The effects of bTBI on relative cerebral perfusion (laser Doppler flowmetry, LDF), mean arterial blood pressure (MAP) cerebral vascular resistance were measured for two hrs post-bTBI. Dilator responses to reduced intravascular pressure were measured in isolated middle cerebral arterial (MCA) segments, ex vivo, 30 and 60 min post-bTBI...
November 21, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29158977/the-sensitivity-of-the-yeast-saccharomyces-cerevisiae-to-acetic-acid-is-influenced-by-dom34-and-rpl36a
#7
Bahram Samanfar, Kristina Shostak, Houman Moteshareie, Maryam Hajikarimlou, Sarah Shaikho, Katayoun Omidi, Mohsen Hooshyar, Daniel Burnside, Imelda Galván Márquez, Tom Kazmirchuk, Thet Naing, Paula Ludovico, Anna York-Lyon, Kama Szereszewski, Cindy Leung, Jennifer Yixin Jin, Rami Megarbane, Myron L Smith, Mohan Babu, Martin Holcik, Ashkan Golshani
The presence of acetic acid during industrial alcohol fermentation reduces the yield of fermentation by imposing additional stress on the yeast cells. The biology of cellular responses to stress has been a subject of vigorous investigations. Although much has been learned, details of some of these responses remain poorly understood. Members of heat shock chaperone HSP proteins have been linked to acetic acid and heat shock stress responses in yeast. Both acetic acid and heat shock have been identified to trigger different cellular responses including reduction of global protein synthesis and induction of programmed cell death...
2017: PeerJ
https://www.readbyqxmd.com/read/29158865/-anesthesiological-aspects-and-complications-of-intracranial-meningiomas-operated-at-the-sylvanus-olympio-university-hospital-center-lom%C3%A3-about-21-cases
#8
Pilakimwé Egbohou, Tabana Mouzou, Kadanga Beketi, Essossinam Kpelao, Abdel Kader Moumouni, Hamza Doles Sama, Sarakawabalo Assénouwé, Gnimdou Akala-Yoba, Kadjika Tomta
This study aimed to point to both the anesthesiological aspects and the perioperative complications of intracranial meningiomas operated at the Sylvanus Olympio University Hospital Center, Lomé. We conducted a retrospective study by reviewing the medical records of patients with intracranial meningiomas undergoing surgery over the period December 2010-December 2015 (5 years) at the Sylvanus Olympio University Hospital Center, Lomé. Out of 46 patients operated fo brain tumors, 21 (45.6%) had meningioma. The average age was 49 ±20 years, with a male predominance (52...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29158768/acute-pancreatitis-in-hand-foot-and-mouth-disease-caused-by-coxsackievirus-a16-case-report
#9
Byungsung Park, Hyuckjin Kwon, Kwanseop Lee, Minjae Kang
Coxsackievirus A16 (CA16), which primarily causes hand, foot, and mouth disease (HFMD), is associated with complications, such as encephalitis, acute flaccid paralysis, myocarditis, pericarditis, and shock. However, no case of pancreatitis associated with CA16 has been reported in children. We report a case of CA16-associated acute pancreatitis in a 3-year-old girl with HFMD. She was admitted because of poor oral intake and high fever for 1 day. Maculopapular rashes on both hands and feet and multiple vesicles on the soft palate were observed on physical examination...
October 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29158484/the-hsf1-parp13-parp1-complex-facilitates-dna-repair-and-promotes-mammary-tumorigenesis
#10
Mitsuaki Fujimoto, Ryosuke Takii, Eiichi Takaki, Arpit Katiyar, Ryuichiro Nakato, Katsuhiko Shirahige, Akira Nakai
Poly(ADP-ribose) polymerase 1 (PARP1) is involved in DNA repair, chromatin structure, and transcription. However, the mechanisms that regulate PARP1 distribution on DNA are poorly understood. Here, we show that heat shock transcription factor 1 (HSF1) recruits PARP1 through the scaffold protein PARP13. In response to DNA damage, activated and auto-poly-ADP-ribosylated PARP1 dissociates from HSF1-PARP13, and redistributes to DNA lesions and DNA damage-inducible gene loci. Histone deacetylase 1 maintains PARP1 in the ternary complex by inactivating PARP1 through deacetylation...
November 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/29158138/different-ecophysiological-responses-of-freshwater-fish-to-warming-and-acidification
#11
Tiago F Jesus, Inês C Rosa, Tiago Repolho, Ana R Lopes, Marta S Pimentel, Vera M F Almeida-Val, Maria M Coelho, Rui Rosa
Future climate change scenarios predict threatening outcomes to biodiversity. Available empirical data concerning biological response of freshwater fish to climate change remains scarce. In this study, we investigated the physiological and biochemical responses of two Iberian freshwater fish species (Squalius carolitertii and the endangered S. torgalensis), inhabiting different climatic conditions, to projected future scenarios of warming (+3°C) and acidification (ΔpH=-0.4). Herein, metabolic enzyme activities of glycolytic (citrate synthase - CS, lactate dehydrogenase - LDH) and antioxidant (glutathione S-transferase, catalase and superoxide dismutase) pathways, as well as the heat shock response (HSR) and lipid peroxidation were determined...
November 17, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29158081/streptococcus-pyogenes-nuclease-a-spna-mediated-virulence-does-not-exclusively-depend-on-nuclease-activity
#12
Callum Chalmers, Adrina Hema J Khemlani, Chae Ryeong Sohn, Jacelyn Mei San Loh, Catherine Jia-Yun Tsai, Thomas Proft
BACKGROUND: Streptococcus pyogenes, or Group A Streptococcus (GAS), is a human pathogen that causes a wide range of diseases, including pharyngitis, necrotizing fasciitis and toxic shock syndrome. The bacterium produces a large arsenal of virulence factors, including the cell wall-anchored Streptococcus pyogenes nuclease A (SpnA), which facilitates immune evasion by degrading the DNA backbone of neutrophil extracellular traps. SpnA consists of a C-terminal endo/exonuclease domain and a N-terminal domain of unknown function...
November 13, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/29157947/vascular-endothelial-specific-il-4r%C3%AE-abl1-kinase-signaling-axis-regulates-severity-of-ige-mediated-anaphylactic-reactions
#13
Amnah Yamani, David Wu, Lisa Waggoner, Taeko Noah, Anthony J Koleske, Fred Finkelman, Simon P Hogan
BACKGROUND: Severe IgE-mediated, food-induced anaphylactic reactions are characterized by pulmonary venous vasodilatation and fluid extravasation, which is thought to lead to the life-threatening anaphylactic phenotype. The underlying immunological and cellular processes involved in driving fluid extravasation and the severe anaphylactic phenotype are not fully elucidated. OBJECTIVE: To define the interaction and requirement of IL-4 and vascular endothelial (VE) IL-4Rα chain signaling in histamine-ABL1-mediated VE dysfunction and fluid extravasation in the severity of IgE-mediated anaphylactic reactions in mice...
November 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29157918/purpura-fulminans-mechanism-and-management-of-dysregulated-hemostasis
#14
REVIEW
Meaghan E Colling, Pavan K Bendapudi
Purpura fulminans (PF) is a highly thrombotic subtype of disseminated intravascular coagulation that can accompany severe bacterial, and more rarely, viral infections. PF is associated with an extremely high mortality rate, and patients often die of overwhelming multisystemic thrombosis rather than septic shock. Survivors typically experience amputation of involved extremities and significant scarring in affected areas. Despite the devastating clinical course associated with this hemostatic complication of infection, the mechanism of PF remains poorly understood...
October 16, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/29157834/16-hydroxycleroda-3-13-dien-15-16-olide-inhibits-the-proliferation-and-induces-mitochondrial-dependent-apoptosis-through-akt-mtor-and-mek-erk-pathways-in-human-renal-carcinoma-cells
#15
Cheng Liu, Wei-Chang Lee, Bu-Miin Huang, Yi-Chen Chia, Yu-Chi Chen, Yung-Chia Chen
BACKGROUND: Renal cell carcinoma (RCC) is well known that it cannot be treated with traditional chemotherapy or radiotherapy. 16-Hydroxycleroda-3,13-dien-15,16-olide (CD), isolated from Polyalthia longifolia Benth. & Hook. f. var. pendula had been reported to display significant efficacy against cancer cell lines. PURPOSE: To determine the anti-tumour activities of CD in two clear cell type RCC (ccRCC) cell lines (A-498 and 786-O). In addition, the underlying mechanisms were also examined...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29157723/implantable-cardioverter-defibrillator-therapy-in-hypertrophic-cardiomyopathy-a-simple-substudy
#16
Mate Vamos, Jeff S Healey, Jia Wang, Stuart J Connolly, Philippe Mabo, Lieselot VanErven, Josef Kautzner, Michael Glikson, Jorg Neuzner, Gilles O'Hara, Xavier Vinolas, Frederik Gadler, Stefan H Hohnloser
BACKGROUND: Patients with hypertrophic cardiomyopathy (HCM) are considered to be at high risk for elevated defibrillation thresholds, peri-procedural complications, and failed appropriate shocks. OBJECTIVE: To determine the value of defibrillation testing in HCM patients undergoing ICD implantation. METHODS: Defibrillation thresholds, perioperative complications, and long-term outcomes were compared between patients with HCM, and those with ischemic or dilated cardiomyopathy (ICM/DCM) enrolled in the SIMPLE trial...
November 17, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29157527/catheter-directed-therapy-for-pulmonary-embolism-patient-selection-and-technical-considerations
#17
REVIEW
Bedros Taslakian, Akhilesh K Sista
Acute pulmonary embolism (PE) is the third most common cause of death among hospitalized patients. Treatment escalation beyond anticoagulation therapy is necessary in patients with cardiogenic shock and may be of benefit in select normotensive patients with right heart strain. Percutaneous catheter-based techniques (catheter-directed mechanical thrombectomy, clot maceration, and/or pharmacologic thrombolysis) as an alternative or adjunct to systemic thrombolysis can rapidly debulk central clot in patients with shock...
January 2018: Interventional cardiology clinics
https://www.readbyqxmd.com/read/29157518/mechanical-circulatory-support-for-high-risk-pulmonary-embolism
#18
REVIEW
Mahir Elder, Nimrod Blank, Adi Shemesh, Mohit Pahuja, Amir Kaki, Tamam Mohamad, Theodore Schreiber, Jay Giri
Temporary mechanical circulatory support (MCS) devices have a role in treating high-risk patients with pulmonary embolism with cardiogenic shock. Mechanical circulatory device selection should be made based on center experience and device-specific features. All current devices are effective in decreasing right arterial pressure and providing circulatory support of 4 to 5 L/min. The pulmonary artery pulsatility index may prove to be an unreliable method to assess right ventricular function. Careful clinical evaluation on an individual patient basis should determine the need for MCS...
January 2018: Interventional cardiology clinics
https://www.readbyqxmd.com/read/29157281/identification-of-immunogenic-proteins-of-the-cysticercoid-of-hymenolepis-diminuta
#19
Anna Sulima, Justyna Bień, Kirsi Savijoki, Anu Näreaho, Rusłan Sałamatin, David Bruce Conn, Daniel Młocicki
BACKGROUND: A wide range of molecules are used by tapeworm metacestodes to establish successful infection in the hostile environment of the host. Reports indicating the proteins in the cestode-host interactions are limited predominantly to taeniids, with no previous data available for non-taeniid species. A non-taeniid, Hymenolepis diminuta, represents one of the most important model species in cestode biology and exhibits an exceptional developmental plasticity in its life-cycle, which involves two phylogenetically distant hosts, arthropod and vertebrate...
November 21, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29157081/regulation-of-becn1-mediated-autophagy-by-hspb6-insights-from-a-human-hspb6-s10f-mutant
#20
Guan-Sheng Liu, Hongyan Zhu, Wen-Feng Cai, Xiaohong Wang, Min Jiang, Kobina Essandoh, Elizabeth Vafiadaki, Kobra Haghighi, Chi Keung Lam, George Gardner, George Adly, Persoulla Nicolaou, Despina Sanoudou, Qiangrong Liang, Jack Rubinstein, Guo-Chang Fan, Evangelia G Kranias
HSPB6/Hsp20 (heat shock protein family B [small] member 6) has emerged as a novel cardioprotector against stress-induced injury. We identified a human mutant of HSPB6 (HSPB6(S10F)) exclusively present in dilated cardiomyopathy (DCM) patients. Cardiac expression of this mutant in mouse hearts resulted in remodeling and dysfunction, which progressed to heart failure and early death. These detrimental effects were associated with reduced interaction of mutant HSPB6(S10F) with BECN1/Beclin 1, leading to BECN1 ubiquitination and its proteosomal degradation...
November 20, 2017: Autophagy
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