Light Tissue Interactions

2019 ◽  
pp. 13-23
Author(s):  
Lucian Fodor ◽  
Raluca Sobec
Keyword(s):  
Tissue Interactions

An ultrastructural study of vegetative incompatibility in plants

1978 ◽  
Vol 36 (2) ◽  
pp. 436-437
Author(s):  
Randy Moore
Keyword(s):  
Ultrastructural Study ◽  
Cell Walls ◽  
Growth And Development ◽  
Solanum Pennellii ◽  
Initial Product ◽  
Basic Aspect ◽  
Tissue Interactions ◽  
Graft Interface ◽  
Antigen Antibody ◽  
Standard Fixation

Cell and tissue interactions are a basic aspect of eukaryotic growth and development. While cell-to-cell interactions involving recognition and incompatibility have been studied extensively in animals, there is no known antigen-antibody reaction in plants and the recognition mechanisms operating in plant grafts have been virtually neglected.An ultrastructural study of the Sedum telephoides/Solanum pennellii graft was undertaken to define possible mechanisms of plant graft incompatibility. Grafts were surgically dissected from greenhouse grown plants at various times over 1-4 weeks and prepared for EM employing variations in the standard fixation and embedding procedure. Stock and scion adhere within 6 days after grafting. Following progressive cell senescence in both Sedum and Solanum, the graft interface appears as a band of 8-11 crushed cells after 2 weeks (Fig. 1, I). Trapped between the buckled cell walls are densely staining cytoplasmic remnants and residual starch grains, an initial product of wound reactions in plants.

Development of the Biomaterials Technology for the Infection Resistance

2018 ◽  
Vol 24 (8) ◽  
pp. 886-895 ◽  
Author(s):  
Tengzhou Xu ◽  
Zhou Chen ◽  
Zhaofeng Chen ◽  
Yuxin Fan ◽  
Haifeng Mao
Keyword(s):  
Disease Spread ◽  
Metallic Ions ◽  
Comparative Performance ◽  
Tissue Interactions ◽  
Infection Resistance ◽  
Glass Base ◽  
Microbial Proliferation ◽  
The Common ◽  
Multicenter Clinical Trials ◽  
Technical Solutions

Infections caused by microbial proliferation are one of the common issues and serious threats to the medical care, and they usually result in disease spread. Therefore, it is a significant issue for developing the antiinfective biomaterials to control this problem, according to the specific clinical application. Meanwhile, all their properties, the best anti-infective performance, the safe biocompatibility and the appropriate tissue interactions must be conformed to each other. At present, technologies are developing novel biomaterials and surfaces endowed with anti-infective properties, relying either on bactericidal or anti-biofilm activities. This review focuses on thoroughly summarizing numerous kinds of antibacterial biomaterials, including the antibacterial matrix biomaterials, antibacterial coatings and films, nanostructured materials and antibacterial fibers. Among these strategies, the utilization of bio-glass base and graphene base antibacterial matrix, and their effects on the antibiosis mechanism were emphatically discussed. Simultaneously, the effects and mechanisms of nano-coated metallic ions are also mentioned. Overall, there is a wealth of technical solutions to contrast the establishment of an implant infection. The lack of well-structured prospective multicenter clinical trials hinders the achievement of conclusive data on the efficacy and comparative performance of antibacterial biomaterials.

SCALES INTO FEATHERS-AN EFFECT OF RETINOIC ACID ON TISSUE INTERACTIONS IN THE DEVELOPING CHICK

1981 ◽  
Vol 359 (1 Modulation of) ◽  
pp. 394-395
Author(s):  
Margaret H. Hardy ◽  
Danielle Dhouailly ◽  
Philippe Sengel
Keyword(s):  
Retinoic Acid ◽  
Tissue Interactions

Excimer laser tissue interactions in the cornea

2021 ◽  
Vol 206 ◽  
pp. 108537
Author(s):  
Riccardo Vinciguerra ◽  
Alfredo Borgia ◽  
Costanza Tredici ◽  
Paolo Vinciguerra
Keyword(s):  
Excimer Laser ◽  
Tissue Interactions

scholarly journals Surgical Audio Guidance: Feasibility Check for Robotic Surgery Procedures

2020 ◽  
Vol 6 (3) ◽  
pp. 571-574
Author(s):  
Anna Schaufler ◽  
Alfredo Illanes ◽  
Ivan Maldonado ◽  
Axel Boese ◽  
Roland Croner ◽  
...  
Keyword(s):  
Robotic Surgery ◽  
Haptic Feedback ◽  
Acoustic Emissions ◽  
Surgical Instruments ◽  
Additional Information ◽  
Tissue Interactions ◽  
Haptic Interactions ◽  
Visual Clues ◽  
To Receive ◽  
Expected Signal

AbstractIn robot-assisted procedures, the surgeon controls the surgical instruments from a remote console, while visually monitoring the procedure through the endoscope. There is no haptic feedback available to the surgeon, which impedes the assessment of diseased tissue and the detection of hidden structures beneath the tissue, such as vessels. Only visual clues are available to the surgeon to control the force applied to the tissue by the instruments, which poses a risk for iatrogenic injuries. Additional information on haptic interactions of the employed instruments and the treated tissue that is provided to the surgeon during robotic surgery could compensate for this deficit. Acoustic emissions (AE) from the instrument/tissue interactions, transmitted by the instrument are a potential source of this information. AE can be recorded by audio sensors that do not have to be integrated into the instruments, but that can be modularly attached to the outside of the instruments shaft or enclosure. The location of the sensor on a robotic system is essential for the applicability of the concept in real situations. While the signal strength of the acoustic emissions decreases with distance from the point of interaction, an installation close to the patient would require sterilization measures. The aim of this work is to investigate whether it is feasible to install the audio sensor in non-sterile areas far away from the patient and still be able to receive useful AE signals. To determine whether signals can be recorded at different potential mounting locations, instrument/tissue interactions with different textures were simulated in an experimental setup. The results showed that meaningful and valuable AE can be recorded in the non-sterile area of a robotic surgical system despite the expected signal losses.

scholarly journals Plasma-Tissue Interactions in Argon Plasma Coagulation: Effects of Power and Tissue Resistance

2016 ◽  
Vol 6 (2) ◽  
pp. 125-134 ◽  
Author(s):  
Eda Gjika ◽  
David Scott ◽  
Alexey Shashurin ◽  
Taisen Zhuang ◽  
Jerome Canady ◽  
...  
Keyword(s):  
Argon Plasma Coagulation ◽  
Argon Plasma ◽  
Plasma Coagulation ◽  
Tissue Interactions ◽  
Tissue Resistance

scholarly journals Lymphoepithelial Cyst of Tonsil

2014 ◽  
Vol 5 (1) ◽  
pp. 28-30
Author(s):  
Kavita Rao ◽  
NS Priya ◽  
Lakshmi Shantharam ◽  
KG Somashekara
Keyword(s):  
Oral Cavity ◽  
Male Patient ◽  
Lymphoid Tissue ◽  
Cystic Lesion ◽  
Lymphoepithelial Cyst ◽  
Review Of Literature ◽  
Tissue Interactions ◽  
Head Neck ◽  
Lymphoepithelial Lesions

ABSTRACT The tissue interactions between epithelium and mesenchyme are few of the events which result in pathological processes. One such interaction of epithelium and lymphoid tissue may result in lymphoepithelial lesions in the oral cavity. Lymphoepithelial cyst (LEC) is a rare developmental cystic lesion of the oral cavity with various histogenetic implications. Documented cases of LEC of the tonsil are low in number in the literature. We are hereby reporting a case of LEC of the tonsil in a male patient with review of literature. How to cite this article Somashekara KG, Priya NS, Rao K, Shantharam L. Lymphoepithelial Cyst of Tonsil. Int J Head Neck Surg 2014;5(1):28-30.

scholarly journals Ultrafast self-gelling powder mediates robust wet adhesion to promote healing of gastrointestinal perforations

2021 ◽  
Vol 7 (23) ◽  
pp. eabe8739
Author(s):  
Xin Peng ◽  
Xianfeng Xia ◽  
Xiayi Xu ◽  
Xuefeng Yang ◽  
Boguang Yang ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Gastric Perforation ◽  
Interfacial Water ◽  
Wet Adhesion ◽  
Tissue Interactions ◽  
Tissue Surface ◽  
Strong Adhesion ◽  
Surface Irregularities ◽  
Physical Interactions

Achieving strong adhesion of bioadhesives on wet tissues remains a challenge and an acute clinical demand because of the interfering interfacial water and limited adhesive-tissue interactions. Here we report a self-gelling and adhesive polyethyleneimine and polyacrylic acid (PEI/PAA) powder, which can absorb interfacial water to form a physically cross-linked hydrogel in situ within 2 seconds due to strong physical interactions between the polymers. Furthermore, the physically cross-linked polymers can diffuse into the substrate polymeric network to enhance wet adhesion. Superficial deposition of PEI/PAA powder can effectively seal damaged porcine stomach and intestine despite excessive mechanical challenges and tissue surface irregularities. We further demonstrate PEI/PAA powder as an effective sealant to enhance the treatment outcomes of gastric perforation in a rat model. The strong wet adhesion, excellent cytocompatibility, adaptability to fit complex sites, and easy synthesis of PEI/PAA powder make it a promising bioadhesive for numerous biomedical applications.

scholarly journals Darkfield orthogonal polarized spectral imaging for studying endovascular laser-tissue interactions in vivo-a preliminary study

2005 ◽  
Vol 13 (3) ◽  
pp. 702 ◽  
Author(s):  
Michal Heger ◽  
Johan F. Beek ◽  
Karin Stenback ◽  
Dirk J. Faber ◽  
Martin J.C. van Gemert ◽  
...  
Keyword(s):  
Spectral Imaging ◽  
Tissue Interactions ◽  
Preliminary Study
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