The possibility of utilizing the CO2 laser for neural anastomoses was investigated in a rat sciatic nerve model. One nerve in each animal was acutely divided and anastomosed using 10-0 nylon epineurial sutures, while the opposite side was joined by "welding" the opposed nerve ends together with CO2 laser pulses. The surgical incisions were reexplored 60 days postoperatively, action potentials were recorded across the anastomoses, and the nerves were removed for light and electron microscopy. The operative patency rate in the suture group was 100%, compared to 87% in the laser group. Among those animals with bilaterally intact nerves, action potentials could be recorded across the anastomotic site in 78% of the sutured preparations and in 85% of nerves spot-welded with the CO2 laser. Morphological studies showed a greater degree of scar tissue formation and constriction in the anastomotic zone of the nerves joined by sutures than was present in laser-treated animals. We believe these preliminary observations suggest that the CO2 laser may have a role to play in peripheral nerve surgery. Further study of this technique is warranted.
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http://dx.doi.org/10.1227/00006123-198508000-00009 | DOI Listing |
Chem Biomed Imaging
December 2024
Department of Chemistry "G.Ciamician", University of Bologna, UE4, Via. P. Gobetti 85, 40129 Bologna, Italy.
Electrochemiluminescence (ECL) is nowadays a powerful technique widely used in biosensing and imaging, offering high sensitivity and specificity for detecting and mapping biomolecules. Screen-printed electrodes (SPEs) offer a versatile and cost-effective platform for ECL applications due to their ease of fabrication, disposability, and suitability for large-scale production. This research introduces a novel method for improving the ECL characteristics of screen-printed carbon electrodes (SPCEs) through the application of CO laser treatment following fabrication.
View Article and Find Full Text PDFCureus
November 2024
School of Medicine, Hospital Militar Escuela "Dr. Alejandro Dávila Bolaños", Managua, NIC.
Objective: We evaluated the quality of life improvements in patients with genitourinary syndrome of menopause (GSM) who received fractional CO laser therapy at the Gynecology-Obstetrics Department of "Dr. Alejandro Dávila Bolaños" Military School Hospital (HMADB) in Managua, Nicaragua, from June 2022 to October 2023.
Materials And Methods: This descriptive cross-sectional study included 25 GSM patients with contraindications or insufficient response to local estrogen therapy.
ACS Appl Mater Interfaces
December 2024
Key Laboratory of Industrial Ecology and Environment Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China.
Photocatalytic conversion of carbon dioxide (CO) to fuel provides an ideal pathway to achieving carbon neutrality. One significant hindrance in achieving the reduction of CO to higher energy density multicarbon products (C) was the difficulty in coupling C-C bonds efficiently. Copper (Cu) is considered the most suitable metal catalyst for C-C coupling to form C products in the CO reduction reaction (CORR), but it encounters challenges such as low product selectivity and slow catalytic efficiency.
View Article and Find Full Text PDFVet Clin North Am Small Anim Pract
December 2024
BluePearl Pet Hospital, 308 W 7200 South, Midvale, UT 84047, USA. Electronic address:
Papillomaviruses (PV) affect dogs and cats. Oral papillomas are common in young dogs and generally do not require treatment because they resolve spontaneously. The virus is spread via direct contact during play, or via indirect contact (from the environment, through fomites).
View Article and Find Full Text PDFSci Rep
December 2024
SANKEN (Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
By employing the stabilizer in the supersonic gas nozzle to produce the plasma density profile with a sharp downramp, we have experimentally demonstrated highly stable electron beam acceleration based on the shock injection mechanism in laser wakefield acceleration with the use of a compact Ti:sapphire laser. A quasi-monoenergetic electron beam with a peak energy of 315 MeV ± 12.5 MeV per shot is generated.
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