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https://www.readbyqxmd.com/read/29322584/effects-of-fixation-on-electrophysiology-and-structure-of-human-jejunal-villi
#1
Anna Casselbrant, Herbert F Helander
The villi of human jejunum vary in size and shape during different functional conditions. In the base the lamina propria is isotonic with blood, in the tip hyperosmotic. Here we study electrophysiological and morphological effects of incubation in hypotonic, isotonic, or hypertonic solutions, and to test various isotonic fixatives for microscopy. Samples of jejunal mucosae, obtained during surgery in obese patients, were studied in Ussing chambers where electrical parameters were registered during incubation in Krebs solution at various osmolarities, and during fixation in formaldehyde, glutaraldehyde, or osmium tetroxide (OsO4 )...
January 11, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29305272/effect-of-hyperosmolar-therapy-on-outcome-following-spontaneous-intracerebral-hemorrhage-ethnic-racial-variations-of-intracerebral-hemorrhage-erich-study
#2
Manan Shah, Lee Birnbaum, Jennifer Rasmussen, Padmini Sekar, Charles J Moomaw, Jennifer Osborne, Anastasia Vashkevich, Daniel Woo
PURPOSE: We aimed to identify the effect of hyperosmolar therapy (mannitol and hypertonic saline) on outcomes after intracerebral hemorrhage (ICH) in the Ethnic/Racial Variations of Intracerebral Hemorrhage (ERICH) study. METHODS: Comparison of ICH cases treated with hyperosmolar therapy versus untreated cases was performed using a propensity score based on age, initial Glasgow Coma Scale, location of ICH (lobar, deep, brainstem, and cerebellar), log-transformed initial ICH volume, presence of intraventricular hemorrhage, and surgical interventions...
January 3, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29300260/dry-eye-assessment-in-patients-with-vitiligo
#3
Sevil Karaman Erdur, Rukiye Aydin, Ali Balevi, Mustafa Ozsutcu, Mehmet Selim Kocabora
PURPOSE: To evaluate tear osmolarity and tear film parameters in patients with vitiligo. METHODS: A total of 25 eyes of 25 patients with vitiligo with periocular involvement (group 1), 30 eyes of 30 patients with vitiligo without periocular involvement (group 2), and 20 eyes of 20 controls (group 3) were evaluated using the Ocular Surface Disease Index (OSDI) questionnaire, Schirmer I test, tear film breakup time, scoring of ocular surface fluorescein staining using a modified Oxford scale, and tear osmolarity...
January 3, 2018: Cornea
https://www.readbyqxmd.com/read/29286394/processing-of-human-cardiac-tissue-toward-extracellular-matrix-self-assembling-hydrogel-for-in-vitro-and-in-vivo-applications
#4
Matthias Becker, Janita A Maring, Barbara Oberwallner, Benjamin Kappler, Oliver Klein, Volkmar Falk, Christof Stamm
Acellular extracellular matrix preparations are useful for studying cell-matrix interactions and facilitate regenerative cell therapy applications. Several commercial extracellular matrix products are available as hydrogels or membranes, but these do not possess tissue-specific biological activity. Because perfusion decellularization is usually not possible with human heart tissue, we developed a 3-step immersion decellularization process. Human myocardial slices procured during surgery are first treated with detergent-free hyperosmolar lysis buffer, followed by incubation with the ionic detergent, sodium dodecyl sulfate, and the process is completed by exploiting the intrinsic DNase activity of fetal bovine serum...
December 4, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29282104/association-between-continuous-hyperosmolar-therapy-and-survival-in-patients-with-traumatic-brain-injury-a-multicentre-prospective-cohort-study-and-systematic-review
#5
Karim Asehnoune, Sigismond Lasocki, Philippe Seguin, Thomas Geeraerts, Pierre François Perrigault, Claire Dahyot-Fizelier, Catherine Paugam Burtz, Fabrice Cook, Dominique Demeure Dit Latte, Raphael Cinotti, Pierre Joachim Mahe, Camille Fortuit, Romain Pirracchio, Fanny Feuillet, Véronique Sébille, Antoine Roquilly
BACKGROUND: Intracranial hypertension (ICH) is a major cause of death after traumatic brain injury (TBI). Continuous hyperosmolar therapy (CHT) has been proposed for the treatment of ICH, but its effectiveness is controversial. We compared the mortality and outcomes in patients with TBI with ICH treated or not with CHT. METHODS: We included patients with TBI (Glasgow Coma Scale ≤ 12 and trauma-associated lesion on brain computed tomography (CT) scan) from the databases of the prospective multicentre trials Corti-TC, BI-VILI and ATLANREA...
December 28, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29275317/totally-implantable-central-venous-port-catheters-radiation-exposure-as-a-function-of-puncture-site-and-operator-experience
#6
Martin Jonczyk, Bernhard Gebauer, Roman Rotzinger, Dirk Schnapauff, Bernd Hamm, Federico Collettini
BACKGROUND: Totally implantable central venous port systems provide a safe and effective, long-term means of access for administration of hyperosmolar, local irritant medication, such as chemotherapy, antibiotics and parenteral nutrition. AIM: To evaluate the combination of access site and level of experience on fluoroscopy times (FT) and dose area products (DAP) during implantation of port catheters in a large patient population. MATERIALS AND METHODS: A total of 1,870 patients (992 women, 878 men; age: 61±13...
January 2018: In Vivo
https://www.readbyqxmd.com/read/29260081/bilateral-cataract-formation-via-acute-spontaneous-fracture-of-the-lens-following-treatment-of-hyperglycemic-hyperosmolar-syndrome
#7
Yevgeniy V Sychev, Emily M Zepeda, Deborah L Lam
Purpose: Acute development of cataracts that may be transient is known to occur during correction of diabetic ketoacidosis and hyperglycemic hyperosmolar syndrome. Nettleship in 1885 was the first to describe the presence of a transient cataract in three diabetic patients that grew worse and eventually cleared with treatment.1 We present a case of irreversible cataracts formed by nuclear fracture of the crystalline lens after hyperglycemia correction, an entity that has not yet been described...
September 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29247499/cardiac-output-changes-after-osmotic-therapy-in-neurosurgical-and-neurocritical-care-patients-a-systematic-review-of-the-clinical-literature
#8
Georgia Tsaousi, Elisabetta Stazi, Marco Cinicola, Federico Bilotta
AIM: Osmotherapy constitutes a first-line intervention for intracranial hypertension management. However, hyperosmolar solutes exert various systematic effects, among which their impact on systemic hemodynamics is poorly clarified. This review aims to appraise the clinical evidence of the effect of mannitol and hypertonic saline (HTS) on cardiac performance in neurosurgical and neurocritical care patients. METHOD: A database search was conducted to identify randomized clinical trials and observational studies reporting HTS or mannitol use in acute brain injury setting...
December 16, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29244842/intensive-care-treatments-associated-with-favorable-discharge-outcomes-in-argentine-children-with-severe-traumatic-brain-injury-for-the-south-american-guideline-adherence-group
#9
Monica S Vavilala, Silvia B Lujan, Qian Qiu, Michael J Bell, Nicolás M Ballarini, Nahuel Guadagnoli, María Alejandra Depetris, Gabriela A Faguaga, Gloria M Baggio, Leonardo O Busso, Mirta E García, Osvaldo R González Carrillo, Paula L Medici, Silvia S Sáenz, Elida E Vanella, Carly K Farr, Gustavo J Petroni
OBJECTIVE: Little is known about the critical care management of children with traumatic brain injury (TBI) in low middle income countries. We aimed to identify indicators of intensive care unit (ICU) treatments associated with favorable outcomes in Argentine children with severe TBI. METHODS: We conducted a secondary analysis of data from patients previously enrolled in a prospective seven center study of children with severe TBI who were admitted to an ICU in one of the seven study centers...
2017: PloS One
https://www.readbyqxmd.com/read/29241593/rapid-differential-diagnosis-of-diabetes-insipidus-in-a-7-month-old-infant-the-copeptin-approach
#10
J Vergier, J Fromonot, A Alvares De Azevedo Macedo, A Godefroy, E Marquant, R Guieu, M Tsimaratos, R Reynaud
INTRODUCTION: Diabetes insipidus is characterized by hypoosmotic polyuria related to deficiency of arginine-vasopressin (AVP) secretion (central diabetes insipidus, CDI) or renal insensitivity to AVP (nephrogenic diabetes insipidus, NDI). The water deprivation test with assessment of AVP activity is currently the gold standard for differential diagnosis in patients presenting polyuria-polydipsia syndrome. Nevertheless, it can be dangerous without proper surveillance and its interpretation may be challenging...
January 2018: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29237738/ascending-vasa-recta-are-angiopoietin-tie2-dependent-lymphatic-like-vessels
#11
Yael Kenig-Kozlovsky, Rizaldy P Scott, Tuncer Onay, Isabel Anna Carota, Benjamin R Thomson, Hyea Jin Gil, Veronica Ramirez, Shinji Yamaguchi, Christine E Tanna, Stefan Heinen, Christine Wu, Radu V Stan, Janet D Klein, Jeff M Sands, Guillermo Oliver, Susan E Quaggin
Urinary concentrating ability is central to mammalian water balance and depends on a medullary osmotic gradient generated by a countercurrent multiplication mechanism. Medullary hyperosmolarity is protected from washout by countercurrent exchange and efficient removal of interstitial fluid resorbed from the loop of Henle and collecting ducts. In most tissues, lymphatic vessels drain excess interstitial fluid back to the venous circulation. However, the renal medulla is devoid of classic lymphatics. Studies have suggested that the fenestrated ascending vasa recta (AVRs) drain the interstitial fluid in this location, but this function has not been conclusively shown...
December 13, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29211350/the-angiotensin-ii-receptors-type-1-blockage-affects-the-urinary-bladder-activity-in-hyperosmolar-induced-detrusor-overactivity-in-rats-preliminary-results
#12
Kajetan Juszczak, Piotr Maciukiewicz
BACKGROUND: Angiotensin II receptors play a role in the pathogenesis of urinary bladder dysfunction, especially in the case of bladder outlet obstruction. The function of these receptors in the detrusor overactivity (DO) still remains unclear. OBJECTIVES: The study aims to investigate some of the mechanisms through which hyperosmolarity induces urinary bladder overactivity. The effect of angiotensin II receptor type 1 - AT1 (telmisartan) on urinary bladder function in physiological state and in hyperosmolar-induced DO in rat model was explored...
October 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29204299/diabetes-mellitus-secondary-to-acute-pancreatitis-in-a-child-with-wolf-hirschhorn-syndrome
#13
Asma Deeb
Wolf-Hirschhorn Syndrome (WHS) is a rare genetic disease caused by deletion in the short arm of chromosome 4. It is characterized by typical fascial features and a varying degree of intellectual disabilities and multiple systemic involvement. Epidemiological studies confirmed the association of acute pancreatitis with the development of diabetes. However, this association has not been reported in WHS. We report an 18-year-old girl with WHS who presented acutely with nonketotic Hyperglycemic Hyperosmolar Status (HHS) in association with severe acute pancreatitis...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/29196933/osmolyte-type-and-the-osmolarity-level-affect-chondrogenesis-of-mesenchymal-stem-cells
#14
Sorour Ahmadyan, Mahboubeh Kabiri, Hana Hanaee-Ahvaz, Ali Farazmand
The inductive effects of increased osmolarity on chondrogenesis are well approved. However, the effects of the osmolyte agent invoked to induce hyperosmolarity are largely neglected. Herein, we scrutinized how hyperosmotic conditions acquired by addition of different osmolytes would impact chondrogenesis. We briefly assessed whether such conditions would differentially affect hypertrophy and angiogenesis during MSC chondrogenesis. Chondrogenic and hypertrophic marker expression along with VEGF secretion during adipose-derived (AD)-MSC chondrogenesis under three osmolarity levels (350, 450, and 550 mOsm) using three different osmolytes (NaCl, sorbitol, and PEG) were assessed...
November 10, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29165898/thrombocytopenia-associated-multi-organ-failure-secondary-to-hyperglycemic-hyperosmolar-non-ketotic-syndrome-a-case-report
#15
Naile Tufan-Pekkucuksen, Maria Carolina Gazzaneo, Natasha Susana Afonso, Sarah J Swartz, Joseph R Angelo, Poyyapakkam Srivaths
Thrombocytopenia associated multi-organ failure (TAMOF) is a clinical syndrome with features of new onset thrombocytopenia, increased lactate dehydrogenase, and multi-organ failure in critically ill patients. TAMOF can be the initial presentation of an underlying disease process or can develop during the course of illness either during the hospital stay. TAMOF has a high mortality rate if not treated; therefore, early detection is critical. TAMOF has been rarely reported in diabetic ketoacidosis. We are describing the first case of a patient diagnosed with hyperglycemic, hyperosmolar non-ketotic syndrome who developed TAMOF on the third day of his hospital course...
November 22, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/29165723/the-impact-of-hyperosmolarity-on-long-term-outcome-in-patients-presenting-with-severe-hyperglycemic-crisis-a-population-based-study
#16
Ivan Kruljac, Miroslav Ćaćić, Petra Ćaćić, Lora Stanka Kirigin Biloš, Davor Kust, Božidar Perić, Maja Filipović-Grčić, Gorana Mirošević, Vedran Ostojić, Mario Štefanović, Milan Vrkljan
Aims We compared characteristics of patients with hyperglycemic hyperosmolar state (HHS) and patients with severe hyperglycemia without the signs of hyperosmolarity and ketoacidosis; analyzed long-term all-cause mortality and potential prognostic factors. Methods The studied population included 261 749 adults. HHS was diagnosed in patients with plasma glucose >33.0 mmol/L, ketonuria <1+, and serum osmolarity >320 mmol/L. Patients with plasma glucose >33.0 mmol/L, ketonuria <1+ and serum osmolarity <320 mmol/L were considered as controls (nHHS)...
November 17, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29158902/hypernatraemic-hypovolaemia-with-anaemia-an-unusual-presentation-of-primary-testicular-insufficiency
#17
Usman Javaid, Vikram Lal, Catherine Napier, Alison Burbridge, Richard Quinton
Hypogonadal men may experience intense vasomotor symptoms, and vasomotor sweating can occasionally be associated with profound fluid losses. We describe a 37-year-old male, who exhibited persistent hypovolaemic hypernatraemia that was challenging to treat despite a continuous high fluid input (>4-5 L/day). He was noted to have drenching sweats and normochromic anaemia. He had recent traumatic head injury, which resulted in neurocognitive dysfunction, so pituitary function tests were done which showed primary hypogonadism...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29156946/chondroprotection-in-models-of-cartilage-injury-by-raising-the-temperature-and-osmolarity-of-irrigation-solutions
#18
Noha M Eltawil, Saima Ahmed, Luke H Chan, A Hamish R W Simpson, Andrew C Hall
Objectives During arthroscopic or open joint surgery, articular cartilage may be subjected to mechanical insults by accident or design. These may lead to chondrocyte death, cartilage breakdown and posttraumatic osteoarthritis. We have shown that increasing osmolarity of routinely used normal saline protected chondrocytes against injuries that may occur during orthopedic surgery. Often several liters of irrigation fluid are used during an orthopedic procedure, which is usually kept at room temperature, but is sometimes chilled...
January 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29140948/hypertonic-saline-resuscitation-following-emergent-laparotomy-and-temporary-abdominal-closure
#19
Tyler J Loftus, Philip A Efron, Trina M Bala, Martin D Rosenthal, Chasen A Croft, R Stephen Smith, Frederick A Moore, Alicia M Mohr, Scott C Brakenridge
BACKGROUND: Our objective was to establish the safety of 3% hypertonic saline (HTS) resuscitation for trauma and acute care surgery patients undergoing emergent laparotomy and temporary abdominal closure (TAC) with the hypothesis that HTS administration would be associated with hyperosmolar hypercholoremic acidosis, lower resuscitation volumes, and higher fascial closure rates, without adversely affecting renal function. METHODS: We performed a retrospective cohort analysis of 189 trauma and acute care surgery patients who underwent emergent laparotomy and TAC, comparing patients with normal baseline renal function who received 3% HTS at 30 mL/h (n=36) to patients with standard resuscitation (n=153) by baseline characteristics, resuscitation parameters, and outcomes including primary fascial closure and KDIGO stages of acute kidney injury...
November 14, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29135618/pathway-for-the-management-of-hyperglycemia-in-the-cardiac-care-unit
#20
Seyed Hamed Hosseini Dehkordi, Jeanine Albu, Emad F Aziz, Eyal Herzog
Inpatient hyperglycemia has been associated with increased morbidity and mortality in critically ill patients. Optimal control of blood glucose (BG) levels using insulin infusion protocols has been shown to improve clinical outcomes. Protocols have been developed to prescribe a safe and effective rate of insulin infusion for optimal control of BG levels; however, a major obstacle in their implementation is their complexity. We have revised and updated our previously published pathway for the management of hyperglycemia, which introduces the "wheel" concept for insulin dosing...
December 2017: Critical Pathways in Cardiology
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