keyword
MENU ▼
Read by QxMD icon Read
search

Tissue handling

keyword
https://www.readbyqxmd.com/read/28527192/in-vitro-evaluation-of-an-injectable-biphasic-calcium-phosphate-bcp-carrier-system-combined-with-recombinant-human-bone-morphogenetic-protein-rhbmp-9
#1
Masako Fujioka-Kobayashi, Benoit Schaller, Yufeng Zhang, Benjamin E Pippenger, Richard J Miron
Bone morphogenetic protein 9 (BMP9) has previously been characterized as the strongest osteoinductive growth factor among the BMP family. The aim of the present study was to evaluate the possibility of combining rhBMP9 with an injectable biphasic calcium phosphate (I-BCP, maxresorb inject®), since I-BCP is an easy to handle biomaterial with ideal properties for bone augmentation procedures. The adsorption potential of rhBMP9 as well as the cell behavior of bone stromal ST2 cells were investigated on cell viability, adhesion, proliferation and osteogenic differentiation for I-BCP combined with/without rhBMP9 in vitro...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28526694/measuring-osmosis-and-hemolysis-of-red-blood-cells
#2
Lauren K Goodhead, Frances M MacMillan
Since the discovery of the composition and structure of the mammalian cell membrane, biologists have had a clearer understanding of how substances enter and exit the cell's interior. The selectively permeable nature of the cell membrane allows the movement of some solutes and prevents the movement of others. This has important consequences for cell volume and the integrity of the cell and, as a result, is of utmost clinical importance, for example in the administration of isotonic intravenous infusions. The concepts of osmolarity and tonicity are often confused by students as impermeant isosmotic solutes such as NaCl are also isotonic; however, isosmotic solutes such as urea are actually hypotonic due to the permeant nature of the membrane...
June 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28526619/construct-validity-of-a-simple-laparoscopic-ovarian-cystectomy-model-using-a-validated-objective-structured-assessment-of-technical-skills
#3
Elizabeth Britton Chahine, Chan Hee Han, Tamika Auguste
STUDY OBJECTIVE: To determine the construct validity and inter-rater reliability of a laparoscopic ovarian cystectomy simulator using a global rating scale. DESIGN: Prospective blinded observational study. DESIGN: Classification: II.3 SETTING: Academic teaching hospital. PARTICIPANTS: A total of 26 postgraduate year 1 - 4 gynecology and obstetrics residents were recruited. (15 junior residents, postgraduate year (PGY) 1 - 2 and 11 senior residents, PGY 3 - 4)...
May 16, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28524079/assembly-of-hepatocyte-spheroids-using-magnetic-3d-cell-culture-for-cyp450-inhibition-induction
#4
Pujan K Desai, Hubert Tseng, Glauco R Souza
There is a significant need for in vitro methods to study drug-induced liver injury that are rapid, reproducible, and scalable for existing high-throughput systems. However, traditional monolayer and suspension cultures of hepatocytes are difficult to handle and risk the loss of phenotype. Generally, three-dimensional (3D) cell culture platforms help recapitulate native liver tissue phenotype, but suffer from technical limitations for high-throughput screening, including scalability, speed, and handling. Here, we developed a novel assay for cytochrome P450 (CYP450) induction/inhibition using magnetic 3D cell culture that overcomes the limitations of other platforms by aggregating magnetized cells with magnetic forces...
May 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28523497/maldi-msi-of-lipids-in-human-skin
#5
Philippa J Hart, Malcolm R Clench
Matrix-assisted laser desorption ionization (MALDI) mass spectrometry (MS) is now a well-established technique for imaging analysis of sectioned biological tissues. One of the growing areas of interest is in the analysis of skin. MALDI-MSI can provide a wealth of information from within sections of skin. This includes information on the distribution of pharmaceuticals following topical treatments, through to the examination of the composition of different skin layers and studies of proteomic, lipidomic, and metabolomic responses to disease, wounds, and external stimuli...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28523233/a-new-method-allowing-long-term-potentiation-recordings-in-hippocampal-organotypic-slices
#6
Paula Paci, Sylvain Gabriele, Laurence Ris
BACKGROUND: Hippocampal organotypic slices are used to improve the understanding of synaptic plasticity mechanisms because they allow longer term studies compared to acute slices. However, it is more delicate to keep cultures alive in the recording system outside in vitro conditions. Experiments from the organotypic cultures are common but the handling of slices is rarely described in the literature, even though tissue preservation is crucial. Instruments are sometimes required to extract the slices from the culture inserts but this approach is delicate and can lead to damage, given how strongly the slices are attached to the insert...
May 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28522248/adverse-effects-in-kidney-function-antioxidant-systems-and-histopathology-in-rats-receiving-monosodium-glutamate-diet
#7
María Del Carmen Contini, Ana Fabro, Néstor Millen, Adriana Benmelej, Stella Mahieu
We investigated the effects of adding of monosodium glutamate (MSG) to a standard diet on oxidative stress in kidney, nitric oxide excretion, renal ions handling and blood pressure. We examined the association of these changes with the effects on renal histology. The study was performed on male Wistar rats (5 weeks old) divided into 3 groups: 1) MSG group were fed a diet supplemented with 3g of MSG/kg b.w./day, five days a week, and spontaneous ingestion of a 1% MSG solution during 16 weeks; 2) NaCl group were fed a diet with NaCl (1g/kg b...
May 15, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28513101/industrialization-of-a-perfusion-bioreactor-prime-example-of-a-non-straightforward-process
#8
G Talò, C Turrisi, C Arrigoni, C Recordati, I Gerges, M Tamplenizza, A Cappelluti, S A Riboldi, M Moretti
Bioreactors are essential enabling technologies for the translation of Advanced Therapies Medicinal Products (ATMPs) from the research field towards a successful clinical application. In order to speed up the translation and the spreading of novel Tissue Engineering (TE) products into the clinical routine, TE bioreactors should evolve from laboratory prototypes towards industrialized products. In this work, we thus challenged the industrialization process of a novel technological platform, based on an established research prototype of perfusion bioreactor, following a GMP-driven approach...
May 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28511075/using-endoscopy-to-minimize-the-extent-of-resection-in-the-management-of-giant-gists-of-the-stomach
#9
Hishaam Ismael, Yury Ragoza, Steven Cox
INTRODUCTION: The stomach is the most common site for GISTs. Wide local resection to achieve negative margins is the standard of care. Giants GISTs requiring extensive resection are usually managed with neo-adjuvant therapy followed by partial or total gastrectomy. PRESENTATION OF CASE: We present a case report of a giant GIST on the lesser curvature of the stomach. Neo-adjuvant therapy was administered. Intra-operative endoscopy was used to reduce the extent of gastric resection...
April 28, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28510575/electro-mechanical-dynamics-of-spiral-waves-in-a-discrete-2d-model-of-human-atrial-tissue
#10
Paul Brocklehurst, Haibo Ni, Henggui Zhang, Jianqiao Ye
We investigate the effect of mechano-electrical feedback and atrial fibrillation induced electrical remodelling (AFER) of cellular ion channel properties on the dynamics of spiral waves in a discrete 2D model of human atrial tissue. The tissue electro-mechanics are modelled using the discrete element method (DEM). Millions of bonded DEM particles form a network of coupled atrial cells representing 2D cardiac tissue, allowing simulations of the dynamic behaviour of electrical excitation waves and mechanical contraction in the tissue...
2017: PloS One
https://www.readbyqxmd.com/read/28508251/occlusion-of-a-long-term-transpleural-biliary-drainage-tract-using-a-gelatin-pledget-hep-plug-%C3%A2
#11
Nikolas Kortes, Daniel Gnutzmann, Philip Konietzke, Philipp Mayer, Migle Sumkauskaite, Hans-Ulrich Kauczor, Boris A Radeleff
This case describes a technique used to close a long-term 14F transpleural biliary drainage catheter tract to prevent biliopleural fistula and further complications. We deployed a compressed gelatin foam pledget provided in a pre-loaded delivery device (Hep-Plug™) along the intrahepatic tissue tract for sealing it against the pleural cavity. The device used is easy to handle and gives the Interventional Radiologist the possibility to safely manage and prevent complications after percutaneous transhepatic interventions...
May 15, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28506772/treatment-of-epithelioid-angiosarcoma-with-topical-ala-pdt-in-the-course-of-surgery
#12
Yang Gao, Wen-Sheng Wang, Hai-Lin Wang, Jia Liu, Yuan-Gang Lu
BACKGROUND: Epithelioid angiosarcoma is a kind of high grade malignancy sarcoma of soft tissue, which is hard to diagnose and completely exsect without causing functional and cosmetic problems. Moreover, the high rate of recurrence is hard to handle. Photodynamic therapy is a novel treatment protocol which can selectively destroy tumor cell with good functional and cosmetic outcomes. METHODS: This is a case about a 81 years old patient with Epithelioid angiosarcoma in the right medial angle of eye, which received surgery and photodynamic therapy...
May 12, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28502483/a-case-report-of-wound-site-seeding-following-cholecystectomy-for-dysplastic-gallbladder
#13
Y Annalisa Ng, Qing Ting Tan, Wei Keat Wan, Yaw Chong Goh
Wound site metastasis following cholecystectomy is an uncommon but well recognised complication following laparoscopic surgery for unsuspected gallbladder carcinoma. We describe a case of implantation of dysplastic cells with subsequent malignant transformation at the incision site 3 years post-cholecystectomy for an inflamed gallbladder. Histopathological examination of this tumour confirmed adenocarcinoma of pancreatobiliary origin, possibly secondary to gallbladder cells implantation and subsequent carcinomatous change...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28502354/soft-tissue-reconstruction-after-total-ankle-arthroplasty
#14
REVIEW
Yash J Avashia, Ronnie L Shammas, Suhail K Mithani, Selene G Parekh
Wound complications following total ankle replacement are common. A team approach, including plastic surgeons, should be utilized to manage these wound issues. The handling of the wound, from the index procedure, to a variety of flaps, can be utilized to provide a successful outcome following an ankle replacement.
June 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28501323/reliable-and-practical-methods-for-cryopreservation-of-embryogenic-cultures-and-cold-storage-of-somatic-embryos-of-norway-spruce
#15
Saila Varis, Susanna Ahola, Laura Jaakola, Tuija Aronen
Somatic embryogenesis (SE) is considered as the most-effective method for vegetative propagation of Norway spruce (Picea abies L. Karst). For mass propagation, a cryopreservation method able to handle large numbers of embryogenic tissues (ETs) reliably and at low costs is needed. The aim of the present study was to compare pretreatments, cryoprotectants and slow-cooling devices for cryopreservation of Norway spruce ETs, with 12 variations of methods and a total of 136 spruce genotypes. Secondly, possible applications for cold storage of mature somatic embryos were studied with the aim of developing a flexible time window for embling production...
May 10, 2017: Cryobiology
https://www.readbyqxmd.com/read/28500182/upr-transducer-bbf2h7-allows-export-of-type-ii-collagen-in-a-cargo-and-developmental-stage-specific-manner
#16
Tokiro Ishikawa, Takuya Toyama, Yuki Nakamura, Kentaro Tamada, Hitomi Shimizu, Satoshi Ninagawa, Tetsuya Okada, Yasuhiro Kamei, Tomoko Ishikawa-Fujiwara, Takeshi Todo, Eriko Aoyama, Masaharu Takigawa, Akihiro Harada, Kazutoshi Mori
The unfolded protein response (UPR) handles unfolded/misfolded proteins accumulated in the endoplasmic reticulum (ER). However, it is unclear how vertebrates correctly use the total of ten UPR transducers. We have found that ER stress occurs physiologically during early embryonic development in medaka fish and that the smooth alignment of notochord cells requires ATF6 as a UPR transducer, which induces ER chaperones for folding of type VIII (short-chain) collagen. After secretion of hedgehog for tissue patterning, notochord cells differentiate into sheath cells, which synthesize type II collagen...
May 12, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28499812/modeling-of-the-interaction-between-grip-force-and-vibration-transmissibility-of-a-finger
#17
John Z Wu, Daniel E Welcome, Thomas W McDowell, Xueyan S Xu, Ren G Dong
It is known that the vibration characteristics of the fingers and hand and the level of grip action interacts when operating a power tool. In the current study, we developed a hybrid finger model to simulate the vibrations of the hand-finger system when gripping a vibrating handle covered with soft materials. The hybrid finger model combines the characteristics of conventional finite element (FE) models, multi-body musculoskeletal models, and lumped mass models. The distal, middle, and proximal finger segments were constructed using FE models, the finger segments were connected via three flexible joint linkages (i...
May 9, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28496155/selection-of-reference-genes-for-microrna-analysis-associated-to-early-stress-response-to-handling-and-confinement-in-salmo-salar
#18
Eduardo Zavala, Daniela Reyes, Robert Deerenberg, Rodrigo Vidal
MicroRNAs are key non-coding RNA molecules that play a relevant role in the regulation of gene expression through translational repression and/or transcript cleavage during normal development and physiological adaptation processes like stress. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) has become the approach normally used to determine the levels of microRNAs. However, this approach needs the use of endogenous reference. An improper selection of endogenous references can result in confusing interpretation of data...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28495616/salvianolic-acid-b-attenuates-doxorubicin-induced-er-stress-by-inhibiting-trpc3-and-trpc6-mediated-ca-2-overload-in-rat-cardiomyocytes
#19
Rong-Chang Chen, Gui-Bo Sun, Jing-Xue Ye, Jian Wang, Miao-di Zhang, Xiao-Bo Sun
Doxorubicin (DOX)-induced cardiotoxicity is a clinically complex syndrome that leads to significant pain to cancer survivors. Endoplasmic reticulum (ER) stress has been suggested to be an important contributor to myocardium dysfunction during this phenomenon. Our previous study proved that Salvianolic acid B (Sal B) protected against doxorubicin induced cardiac dysfunction by inhibiting ER stress and cardiomyocyte apoptosis. However, the underlying molecular mechanism is not yet clearly. In this study, we investigated the protective effect and mechanisms of Sal B againest DOX-induced cardiac injury and ER stress in vivo and in vitro...
May 8, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28495542/endothelial-function-is-preserved-in-veins-harvested-by-either-endoscopic-or-surgical-techniques
#20
Adam R Wheeler, Daniel E Kendrick, Matt T Allemang, Andre F Gosling, Ann H Kim, Alfred Hausladen, Vikram S Kashyap
OBJECTIVES: Endoscopic vein harvest for lower extremity arterial bypass grafting has been questioned due to concern for endothelial damage during procurement. We sought to compare Nitric Oxide (NO)-mediated endothelial dependent relaxation (EDR) in vein segments harvested using open surgical (OH) versus endoscopic (EH) techniques. METHODS: Saphenous vein segments were harvested for lower extremity bypass, and a single, minimally handled section of saphenous vein, free of branches, was taken from the end of the graft...
May 8, 2017: Annals of Vascular Surgery
keyword
keyword
110726
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"