Temporary fresh blood: Secondments for promoting novelty

2021 ◽  
Vol 2021 (1) ◽  
pp. 11420
Author(s):  
Athanasia Lampraki ◽  
Christos Kolympiris
Keyword(s):  
Author(s):  
Sara Notararigo ◽  
Manuel Martín-Pastor ◽  
Juan E. Viñuela Roldán ◽  
Adriano Quiroga ◽  
J. Enrique Dominguez-Munoz ◽  
...  

Abstract Inflammatory bowel disease is a multifactorial etiology, associated with environmental factors that can trigger both debut and relapses. A high level of tumor necrosis factor-α in the gut is the main consequence of immune system imbalance. The aim of treatment is to restore gut homeostasis. In this study, fresh blood and serum samples were used to identify biomarkers and to discriminate between Crohn’s disease and ulcerative colitis patients under remission treated with anti-TNF. Metabolomics based on Nuclear Magnetic Resonance spectroscopy (NMR) was used to detect unique biomarkers for each class of patients. Blood T lymphocyte repertories were characterized, as well as cytokine and transcription factor profiling, to complement the metabolomics data. Higher levels of homoserine-methionine and isobutyrate were identified as biomarkers of Crohn’s disease with ileocolic localization. For ulcerative colitis, lower levels of creatine-creatinine, proline, and tryptophan were found that reflect a deficit in the absorption of essential amino acids in the gut. T lymphocyte phenotyping and its functional profiling revealed that the overall inflammation was lower in Crohn’s disease patients than in those with ulcerative colitis. These results demonstrated that NMR metabolomics could be introduced as a high-throughput evaluation method in routine clinical practice to stratify both types of patients related to their pathology. Key messages NMR metabolomics is a non-invasive tool that could be implemented in the normal clinical practice for IBD to assess beneficial effect of the treatment. NMR metabolomics is a useful tool for precision medicine, in order to sew a specific treatment to a specific group of patients. Finding predictors of response to IFX would be desirable to select patients affected by IBD. Immunological status of inflammations correlates with NMR metabolomics biomarkers.


1860 ◽  
Vol 10 ◽  
pp. 186-189 ◽  

The author has found that when a small drop of fresh blood is placed beside a similar drop of sherry wine on a slip of glass, and viewed with the microscope, after being covered as usual with a thin piece of glass, certain changes are seen to take place in the blood as it mingles with the wine, which are thus described :— “In those parts where the wine is mingling with the blood—at the outer edges of the mass—various altered corpuscles will be seen. They float in the fluid, separated from each other, having now no longer any disposition to adhere together in rolls. Their outlines are altered, and sundry markings appear in their interior. After a short time—perhaps ten minutes, sometimes sooner—numerous cor­puscles will be observed throwing out matter from their interior; two, five, or ten molecular spots fringing their circumference. Some of these molecules grow larger and seem coloured; others of them elongate into tails or filaments, which frequently attain to an extra­ordinary length, and wave about in a very remarkable manner. They all terminate, at the extremity farthest from the corpuscle, in a round globular enlargement. A single corpuscle may very frequently be seen with five or six of these tails.


2012 ◽  
Vol 48 (4) ◽  
pp. 226-232 ◽  
Author(s):  
Valeria Pallotta ◽  
Gian Maria D'Amici ◽  
Angelo D'Alessandro ◽  
Roberto Rossetti ◽  
Lello Zolla

Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Shahram Majidi ◽  
Basit Rahim ◽  
Sarwat I Gilani ◽  
Waqas I Gilani ◽  
Malik M Adil ◽  
...  

Background: The temporal evolution of intracerebral hematomas and perihematoma edema in the ultra-early period on computed tomographic (CT) scans in patients with intracerebral hemorrhage (ICH) is not well understood. We aimed to investigate hematoma and perihematoma changes in “neutral brain” models of ICH. Methods: One human and 6 goat cadaveric heads were used as “neutral brains” to provide physical properties of the brain without any biological activity or new bleeding. ICH was induced by slow injection of 4 ml of fresh blood into the right basal ganglia of the goat brains. Similarly, 20 ml of fresh blood was injected deep into the white matter of the human cadaver head in each hemisphere. Serial CT scans of the heads were performed at 0, 1, 3, and 5 hours after inducing ICH. Analyze software (AnalyzeDirect, Overland Park, KS) was used to measure hematoma and perihematoma hypodensity volumes in the baseline and follow up CT scans. Results: The initial hematoma volumes of 11.6 ml and 10.5 ml in the right and the left hemispheres of the human cadaver brain gradually decreased to 6.6 ml and 5.4 ml at 5 hours, showing 43% and 48% retraction of hematoma, respectively. The volume of the perihematoma hypodensity in the right and left hemisphere increased from 2.6 ml and 2.2 ml in the 1 hour follow up CT scans to 4.9 ml and 4.4 ml in the 5 hour CT scan, respectively. Hematoma retraction was also observed in all six ICH models in the goat brains. The mean ICH volume in the goat heads was decreased from 1.49 ml in the baseline CT scan to 1.01 ml in the 5 hour follow up CT scan showing 29.6% hematoma retraction. Perihematoma hypodensity was visualized in 70% of ICH in goat brains, with an increasing mean hypodensity volume of 0.4 ml in the baseline CT scan to 0.8 ml in the 5 hour follow up CT scan. Conclusion: Our study demonstrated that substantial hematoma retraction and perihematoma hypodensity occurs in intracerebral hematomas in the absence of any new bleeding or biological activity of the surrounding brain. Such observations suggest that active bleeding is underestimated in patients with no or small hematoma expansion and our understanding of perihematoma hypodesity needs to be reconsidered.


2018 ◽  
Vol 4 (1) ◽  
pp. e000354 ◽  
Author(s):  
Anna Haberberger ◽  
Benedikt Kirchner ◽  
Irmgard Riedmaier ◽  
Reinhard Henschler ◽  
Christian Wichmann ◽  
...  

ObjectivesFor several decades, autologous blood doping (ABD) in sports has been a major problem, and even today there is still no reliable method for satisfactorily detecting ABD. For this kind of doping, stored individual erythrocytes are used to increase stamina and endurance caused by a higher erythrocyte level in the athlete’s body. Since there is growing evidence that these cells are enriched with microRNAs (miRNAs), this study has been carried out to discover and validate all miRNAs occurring in fresh blood as well as in stored blood.MethodsTherefore, small RNA Next Generation Sequencing has been performed, which allows untargeted detection of all miRNAs in a blood sample. The focus of this investigation has been to find miRNA alterations in blood bags after erythrocyte processing and during storage, as compared with fresh blood directly withdrawn from subjects. Blood samples were obtained from 12 healthy, recreationally active male subjects three times before blood donation and from blood bags at several time points after blood processing.Results189 miRNAs have been considered stable over two consecutive weeks. A further analysis revealed a complex biomarker signature of 28 miRNAs, consisting of 6 miRNAs that altered during 6 weeks of storage and 22 miRNAs that altered due to processing.ConclusionThese results suggest that the identified miRNA biomarker signature may be used for the detection of ABD. These 28 miRNA candidates are tested and verified currently in a follow-up study, a human transfusion clinical trial in healthy sportsmen.


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