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https://www.readbyqxmd.com/read/29786814/predictive-value-of-preoperative-neutrophil-to-lymphocyte-ratio-while-detecting-bowel-resection-in-hernia-with-intestinal-incarceration
#1
Hande Köksal, Derviş Ateş, Emet Ebru Nazik, İlknur Küçükosmanoğlu, Serap Melek Doğan, Osman Doğru
BACKGROUND: The aim of this study was to evaluate the relationship between preoperative hematological inflammatory markers of the patients who underwent a surgery for incarcerated hernia and intestinal resection requirement. METHODS: The data of 102 patients who underwent a surgery for incarcerated hernia were retrospectively evaluated. Whole blood cell counts were preoperatively measured, and operation types and pathology results were recorded. The patients with intestinal resections were compared with those without any resection in terms of leukocyte number, neutrophil rate, red cell distribution width (RDW), platelet distribution width, neutrophil-to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), and mean platelet volume (MPV)...
May 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29786109/engulfment-of-platelets-delays-endothelial-cell-aging-via-girdin-and-its-phosphorylation
#2
Yong Lan, Yongjun Li, Dajun Li, Peng Li, Jiyang Wang, Yongpeng Diao, Guodong Ye, Yangfang Li
Endothelial cells are critical in angiogenesis and maintain the homeostasis of the blood‑brain barrier (BBB). Platelets (PLTs) are essential in vascular biology, including angiogenesis. The present study aimed to investigate the effect of PLTs on the aging of endothelial cells. Human brain microvascular endothelial cells (HBMECs) and human astrocytes were co‑cultured to mimic the BBB. Transmission electron microscopy was used to observe the engulfment of PLTs. Confocal microscopy was used to observe the co‑localization of PLTs, girders of actin filament (girdin) and phosphorylated (p‑)girdin...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786068/mitochondrial-pip3-binding-protein-fundc2-supports-platelet-survival-via-akt-signaling-pathway
#3
Qi Ma, Chongzhuo Zhu, Weilin Zhang, Na Ta, Rong Zhang, Lei Liu, Du Feng, Heping Cheng, Junling Liu, Quan Chen
Platelets undergo apoptosis in response to a variety of stimuli in the circulation. Mitochondria in platelets are essential for their apoptosis. Specifically, pro-survival protein BCL-xL on mitochondria is the key regulator of platelet lifespan. Here we identify an outer mitochondrial membrane protein FUNDC2 for platelet survival. FUNDC2 knockout mice carrying excessively apoptotic platelets exhibit thrombocytopenia in response to hypoxia. Mechanistically, FUNDC2 binds the lipid PIP3 via its unique, highly conserved N-terminal motif...
May 21, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29785664/effect-of-pneumatic-tubing-system-transport-on-platelet-apheresis-units
#4
Jevgenia Zilberman-Rudenko, Frank Z Zhao, Stephanie E Reitsma, Annachiara Mitrugno, Jiaqing Pang, Joseph J Shatzel, Beth Rick, Christina Tyrrell, Wohaib Hasan, Owen J T McCarty, Martin A Schreiber
Platelet apheresis units are transfused into patients to mitigate or prevent bleeding. In a hospital, platelet apheresis units are transported from the transfusion service to the healthcare teams via two methods: a pneumatic tubing system (PTS) or ambulatory transport. Whether PTS transport affects the activity and utility of platelet apheresis units is unclear. We quantified the gravitational forces and transport time associated with PTS and ambulatory transport within our hospital. Washed platelets and supernatants were prepared from platelet apheresis units prior to transport as well as following ambulatory or PTS transport...
May 21, 2018: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29785642/differential-binding-of-active-and-inactive-integrin-to-talin
#5
Dongchuan Wang, Qiang Guo, Ailin Wei, Ang Li
Bi-directional signaling of integrins plays an important role in platelet and leukocyte function. Talin plays a key role in integrin bi-directional signaling and its binding to integrin is highly regulated. The precise regulation of the recruitment and binding of talin to integrin is still being elucidated. In particular, the recruitment of talin to integrin is controlled by the RAP-1 and RIAM/lamellipodin signaling axis and the affinity between talin and integrin is regulated by the conformation or protease cleavage of talin...
May 21, 2018: Protein Journal
https://www.readbyqxmd.com/read/29785471/correction-to-effect-of-sleeve-gastrectomy-on-platelet-counts-and-mean-platelet-volumes
#6
Faruk Kutluturk, Zeki Ozsoy
In the original article, in the Results section of the Abstract the text "…(10.41 ± 1.23 fL, p > 0.001)" should be changed to "…(10.41 ± 1.23 fL, p < 0.001)". The same error occurs on the next page of the article in the second paragraph of the Results section of the main text.
May 21, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29785402/formyl-met-leu-phe-stimulated-fpr1-phosphorylation-in-plate-adherent-human-neutrophils-enhanced-proteolysis-but-lack-of-inhibition-by-platelet-activating-factor
#7
Algirdas J Jesaitis, Jeannie Gripentrog, Jovanka M Voyich
N-formyl-Met-Leu-Phe (fMLF) is a model PAMP/DAMP driving human PMN to sites of injury/infection utilizing the GPCR, FPR1. We examined a microtiter plate format for measurement of FPR1 phosphorylation in adherent PMN at high densities and found that a new phosphosensitive FPR1 fragment, 25K-FPR1, accumulates in SDS-PAGE extracts. 25K-FPR1 is fully inhibited by diisopropylfluorophosphate PMN pretreatment but is not physiologic, as its formation failed to be significantly perturbed by ATP depletion, time and temperature of adherence, or adherence mechanism...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29785390/platelet-rich-plasma-prp-for-the-treatment-of-vulvar-lichen-sclerosus-in-a-premenopausal-woman-a-case-report
#8
D Franic, Z Iternička, M Franić-Ivanišević
The use of platelet-rich plasma (PRP) for the treatment of lichen sclerosus (LS) in a 38-year-old premenopausal woman is reported. The diagnosis was confirmed histologically and the symptoms documented using the ICIQ Vaginal Symptoms Questionnaire (ICIQ-VS) and the Female Sexual Function Index (FSFI) questionnaire. PRP was prepared from autologous blood using the Regen Cellular Matrix Kit. PRP was administered twice over two months. Histology at follow-up one month after the second administration showed the epidermis was nearly normal and upper dermal cellularity had been restored...
April 2018: Case Reports in Women's Health
https://www.readbyqxmd.com/read/29785224/pseudarthrosis-of-the-calcaneus-advantages-of-regenerative-medicine-in-the-management-of-a-rare-entity-a-case-report-and-review-of-literature
#9
Bouaziz Wajdi, Mohamed Ali Rebai, Walid Baya, Nabil Krid, Wassim Zribi, Hassib Keskes
Background: The follow-up of calcaneal fractures has shown that they are difficult to manage and lead to multiple complications such as malunion and subtalar osteoarthritis. Pseudarthrosis of the calcaneus is an extremely rare complication, which was described in the literature through case reports.In the existing literature, only seven studies, including thirteen patients have reported the nonunion. However, to the best of our knowledge, no study elucidates the role of new techniques of regenerative medicine such as Bone Marrow Concentrates (BMC) or Platelet Rich Plasma (PRP) in the management...
2018: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29785186/platelets-activated-by-the-anti-%C3%AE-2gpi-%C3%AE-2gpi-complex-release-micrornas-to-inhibit-migration-and-tube-formation-of-human-umbilical-vein-endothelial-cells
#10
Yanfen Zhang, Wenjing Zhang, Caijun Zha, Yanhong Liu
Background: Patients with anti-β2GPI antibodies display significantly higher platelet activation/aggregation and vascular endothelial cell damage. The mechanism underlying the correlation between platelet activation, vascular endothelial cell dysfunctions and anti-β2GPI antibodies remains unknown. Methods: In this study, we derived miR-96 and -26a from platelets activated by the anti-β2GPI/β2GPI complex and explored their role in modulating human umbilical vein endothelial cell (HUVEC) migration and tube formation...
2018: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/29785143/pilot-study-of-the-antifibrotic-effects-of-the-multikinase-inhibitor-pacritinib-in-a-mouse-model-of-liver-fibrosis
#11
Suliman Al-Fayoumi, Taishi Hashiguchi, Yuka Shirakata, John Mascarenhas, Jack W Singer
Background: Fibrotic diseases result from an exuberant response to chronic inflammation. Myelofibrosis is the end result of inflammation in bone, caused by an inflammatory process triggered by production of abnormal myeloid cells driven by mutations affecting the JAK-STAT pathway. Inflammatory cytokine overproduction leads to increased mesenchymal cell proliferation, culminating in fibrosis. Although JAK2 inhibitors, such as the JAK1/2 inhibitor ruxolitinib and the JAK2/FLT3/CSF1R/IRAK1 inhibitor pacritinib suppress abnormal clone expansion in myelofibrosis, ruxolitinib does not appear to prevent or reverse bone-marrow fibrosis in most patients...
2018: Journal of Experimental Pharmacology
https://www.readbyqxmd.com/read/29785106/sn38-loaded-100-nm-targeted-liposomes-for-improving-poor-solubility-and-minimizing-burst-release-and-toxicity-in-vitro-and-in-vivo-study
#12
Yi-Ping Fang, Chih-Hung Chuang, Yi-Jhun Wu, Hsin-Che Lin, Yun-Chi Lu
Background: SN38 (7-ethyl-10-hydroxycamptothecin) is a camptothecin derivative acts against various tumors. However, SN38 is hydrolyzed in the physiological environment (pH 7.4), and this instability interferes with its potential therapeutic effect. Our objective was to investigate SN38-loaded liposomes to overcome the poor solubility of SN38 and its biodistribution, which further diminish its toxicity. Materials and methods: The sub-100 nm targeted liposomes was employed to deliver SN-38 and evaluate the characterization, release behaviors, cytotoxicity, in vivo pharmacokinetics and biochemical assay...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29784642/identification-of-key-lipids-critical-for-platelet-activation-by-comprehensive-analysis-of-the-platelet-lipidome
#13
Bing Peng, Sascha Geue, Cristina Coman, Patrick Münzer, Dominik Kopczynski, Canan Has, Nils Hoffmann, Mailin-Christin Manke, Florian Lang, Albert Sickmann, Meinrad Gawaz, Oliver Borst, Robert Ahrends
Platelet integrity and function critically depend on lipid composition. However, the lipid inventory in platelets was hitherto not quantified. Here, we examined the lipidome of murine platelets using lipid-category tailored protocols on a quantitative lipidomics platform. We could show that the platelet lipidome comprises almost 400 lipid species and covers a concentration range of seven orders of magnitude. A systematic comparison of the lipidomics network in resting and activated murine platelets, validated in human platelets, revealed that less than 20% of the platelet lipidome is changed upon activation, involving mainly lipids containing arachidonic acid...
May 21, 2018: Blood
https://www.readbyqxmd.com/read/29784641/intrinsic-apoptosis-circumvents-the-functional-decline-of-circulating-platelets-but-does-not-cause-the-storage-lesion
#14
Irina Pleines, Marion Lebois, Pradnya Gangatirkar, Amanda E Au, Rachael M Lane, Katya J Henley, Maria Kauppi, Jason Corbin, Ping Cannon, Jonathan Bernardini, Imala Alwis, Kate E Jarman, Sarah Ellis, Donald Metcalf, Shaun P Jackson, Simone M Schoenwaelder, Benjamin T Kile, Emma C Josefsson
The circulating life span of blood platelets is regulated by the pro-survival protein BCL-XL. It restrains the activity of BAK and BAX, the essential pro-death mediators of intrinsic apoptosis. Disabling the platelet intrinsic apoptotic pathway in mice by deleting BAK and BAX results in a doubling of platelet life span and concomitant thrombocytosis. Apoptotic platelets expose phosphatidylserine (PS) via a mechanism that is distinct from that driven by classical agonists. Whether there is any role for apoptotic PS in platelet function in vivo, however, is unclear...
May 21, 2018: Blood
https://www.readbyqxmd.com/read/29784564/platelet-function-following-induced-hypoglycaemia-in-type-2-diabetes
#15
H Kahal, A Aburima, B Spurgeon, K S Wraith, A S Rigby, T Sathyapalan, E S Kilpatrick, K M Naseem, S L Atkin
AIM: Strict glycaemic control has been associated with an increased mortality rate in subjects with type 2 diabetes (T2DM). Here we examined platelet function immediately and 24hours following induced hypoglycaemia in people with type 2 diabetes compared to healthy age-matched controls. METHODS: Hyperinsulinaemic clamps reduced blood glucose to 2.8mmol/L (50mg/dl) for 1hour. Sampling at baseline; euglycaemia 5mmol/L (90mg/dl); hypoglycaemia; and at 24 post clamp were undertaken...
May 3, 2018: Diabetes & Metabolism
https://www.readbyqxmd.com/read/29784314/identification-of-new-diterpene-esters-from-green-arabica-coffee-beans-and-their-platelet-aggregation-accelerating-activities
#16
Xia Wang, QianQian Meng, XingRong Peng, GuiLin Hu, MingHua Qiu
Eight new ent-kaurane diterpene fatty acid esters, namely caffarolides A-H (1-8), were isolated from green beans of Coffea arabica. Their chemical structures were confirmed by extensive spectroscopic analysis including 1D, 2D NMR (HSQC, HMBC, 1 H-1 H COSY, and ROESY), HRMS, IR and CD spectra and by GC-FID analysis. Interestingly, the diterpene moiety of these new compounds first occurred in genus Coffea. All the isolates were evaluated for platelet aggregation activity in vitro. As the results, caffarolides C, D and F (3, 4 and 6) showed induction effect for platelet aggregation and the possible structure-activity relationships have been discussed briefly...
October 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29784156/lower-ocular-pulse-amplitude-with-dynamic-contour-tonometry-is-associated-with-biopsy-proven-giant-cell-arteritis
#17
Edsel Ing, Christian Pagnoux, Felix Tyndel, Arun Sundaram, Seymour Hershenfeld, Paul Ranalli, Shirley Chow, Tran Le, Carla Lutchman, Susan Rutherford, Kay Lam, Harleen Bedi, Nurhan Torun
OBJECTIVES: To determine the role of the ocular pulse amplitude (OPA) from Pascal dynamic contour tonometry in predicting the temporal artery biopsy (TABx) result in patients with suspected giant cell arteritis (GCA). DESIGN: Prospective validation study. PARTICIPANTS: Adults aged 50 years or older who underwent TABx from March 2015 to April 2017. METHODS: Subjects on high-dose glucocorticoids more than 14 days or without serology before glucocorticoid initiation were excluded...
June 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/29783928/physical-activity-intervention-for-elderly-patients-with-reduced-physical-performance-after-acute-coronary-syndrome-hulk-study-rationale-and-design-of-a-randomized-clinical-trial
#18
Elisabetta Tonet, Elisa Maietti, Giorgio Chiaranda, Francesco Vitali, Matteo Serenelli, Giulia Bugani, Gianni Mazzoni, Rossella Ruggiero, Jonathan Myers, Giovanni Quinto Villani, Ursula Corvi, Giovanni Pasanisi, Simone Biscaglia, Rita Pavasini, Giulia Ricci Lucchi, Gianluigi Sella, Roberto Ferrari, Stefano Volpato, Gianluca Campo, Giovanni Grazzi
BACKGROUND: Reduced physical performance and impaired mobility are common in elderly patients after acute coronary syndrome (ACS) and they represent independent risk factors for disability, morbidity, hospital readmission and mortality. Regular physical exercise represents a means for improving functional capacity. Nevertheless, its clinical benefit has been less investigated in elderly patients in the early phase after ACS. The HULK trial aims to investigate the clinical benefit of an early, tailored low-cost physical activity intervention in comparison to standard of care in elderly ACS patients with reduced physical performance...
May 21, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29783879/effects-of-sodium-citrate-citric-acid-and-lactic-acid-on-human-blood-coagulation
#19
Vittorio Scaravilli, Luca Di Girolamo, Eleonora Scotti, Mattia Busana, Osvaldo Biancolilli, Patrizia Leonardi, Andrea Carlin, Caterina Lonati, Mauro Panigada, Antonio Pesenti, Alberto Zanella
INTRODUCTION: Citric acid infusion in extracorporeal blood may allow concurrent regional anticoagulation and enhancement of extracorporeal CO2 removal. Effects of citric acid on human blood thromboelastography and aggregometry have never been tested before. METHODS: In this in vitro study, citric acid, sodium citrate and lactic acid were added to venous blood from seven healthy donors, obtaining concentrations of 9 mEq/L, 12 mEq/L and 15 mEq/L. We measured gas analyses, ionized calcium (iCa++ ) concentration, activated clotting time (ACT), thromboelastography and multiplate aggregometry...
May 1, 2018: Perfusion
https://www.readbyqxmd.com/read/29783667/bone-marrow-defects-and-platelet-function-a-focus-on-mds-and-cll
#20
REVIEW
Sarah Luu, Elizabeth E Gardiner, Robert K Andrews
The bloodstream typically contains >500 billion anucleate circulating platelets, derived from megakaryocytes in the bone marrow. This review will focus on two interesting aspects of bone marrow dysfunction and how this impacts on the quality of circulating platelets. In this regard, although megakaryocytes are from the myeloid lineage leading to granulocytes (including neutrophils), erythrocytes, and megakaryocytes/platelets, recent evidence has shown that defects in the lymphoid lineage leading to B cells, T cells, and natural killer (NK) cells also result in abnormal circulating platelets...
May 18, 2018: Cancers
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