94 research outputs found

    Waveform control of orientation-dependent ionization of DCl in few-cycle laser fields

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    Strong few-cycle light fields with stable electric field waveforms allow controlling electrons on time scales down to the attosecond domain. We have studied the dissociative ionization of randomly oriented DCl in 5 fs light fields at 720 nm in the tunneling regime. Momentum distributions of D+ and Cl+ fragments were recorded via velocity-map imaging. A waveformdependent anti-correlated directional emission of D+ and Cl+ fragments is observed. Comparison of our results with calculations indicates that tailoring of the light field via the carrier envelope phase permits the control over the orientation of DCl+ and in turn the directional emission of charged fragments upon the breakup of the molecular ion

    Attosecond electron spectroscopy using a novel interferometric pump-probe technique

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    We present an interferometric pump-probe technique for the characterization of attosecond electron wave packets (WPs) that uses a free WP as a reference to measure a bound WP. We demonstrate our method by exciting helium atoms using an attosecond pulse with a bandwidth centered near the ionization threshold, thus creating both a bound and a free WP simultaneously. After a variable delay, the bound WP is ionized by a few-cycle infrared laser precisely synchronized to the original attosecond pulse. By measuring the delay-dependent photoelectron spectrum we obtain an interferogram that contains both quantum beats as well as multi-path interference. Analysis of the interferogram allows us to determine the bound WP components with a spectral resolution much better than the inverse of the attosecond pulse duration.Comment: 5 pages, 4 figure

    ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ эвСролимуса послС трансплантации ΠΏΠ΅Ρ‡Π΅Π½ΠΈ Π² Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠΉ клиничСской ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅ ΠΏΠΎ Π΄Π°Π½Π½Ρ‹ΠΌ ΠΎΠ΄Π½ΠΎΠ³ΠΎ Ρ†Π΅Π½Ρ‚Ρ€Π°

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    Aim. Single-center analysis of everolimus treatment after liver transplantation. Materials and methods. 23 patients having received Certican after OLT in RSCRST were observed in period from 6 months to 5 years; comparison group consisted of 50 patients who received immunosuppressive scheme with tacrolimus. Conversion to everolimus was performed in the period from 1 month after OLT after discharge and at later time according to the indications: hepatocellular cancer, cumulative CNI nephrotoxicity, the development of malignancies, and intolerance to CNI. The concentrations of CNI and everolimus in the blood (target concentration of tacrolimus 1.5–2 ng/ml, everolimus 3–8 ng/ml) were monitored. Glomerular filtration rate (GFR) was determined using the CKD-EPI equation. Adverse events of everolimus were evaluated. Results. The immunosuppressive scheme with everolimus is presented; adverse events with dose-dependent hypercholesterolemia (34.7%) as the main; the average level of blood cholesterol was not significantly different from that in the control group, 5.6 Β± 0.9 vs 5.1 Β± 1.4 mmol/l (Z = 1.3, p = 0.17). Renal function was stable throughout the observation period (35 Β± 16 months). GFR (CKD-EPI) before conversion was 75.8 Β± 17.5 ml/min. 6 patients treated with Certican for 5 years had final GFR 96.6 Β± 5.1 ml/min. GFR in the group of Certican at 12 months post conversion was 87.5 Β± 16.3 ml/min vs 94.2 Β± 16.8 ml/min (p = 0.08) in the control group. We revealed metastases to the liver and lungs in 5 patients from 13 patients with HCC, survival rate in this group depended on the compliance with the Milan criteria (Z = 2.4, p = 0.02). Conclusion. Everolimus allows maintaining of a stable renal function to prevent progression of renal failure; conversion should be initiated as early as possible. Combination of everolimus with reduced dose of CNI is optimal. Despite the fact that side effects are developing in most patients, adequate monitoring of immunosuppressive drug concentration and timely dose adjustments are able to reduce their severity, discontinuation of Certican is not required.ЦСль. Анализ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² примСнСния эвСролимуса послС трансплантации ΠΏΠ΅Ρ‡Π΅Π½ΠΈ Π² ΠΎΠ΄Π½ΠΎΠΌ Ρ†Π΅Π½Ρ‚Ρ€Π΅. ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π‘ΠΎΠ»ΡŒΠ½Ρ‹Ρ… (n = 23), ΠΏΠΎΠ»ΡƒΡ‡Π°Π²ΡˆΠΈΡ… сСртикан послС трансплантации ΠΏΠ΅Ρ‡Π΅Π½ΠΈ, Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½ΠΎΠΉ Π² РНЦРΠ₯Π’, наблюдали Π² сроки ΠΎΡ‚ ΠΏΠΎΠ»ΡƒΠ³ΠΎΠ΄Π° Π΄ΠΎ 5 Π»Π΅Ρ‚, Π²Ρ‹Π±ΠΎΡ€ΠΊΠ° Π±Ρ‹Π»Π° сопоставима с основной Π³Ρ€ΡƒΠΏΠΏΠΎΠΉ ΠΈΠ· 50 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…, ΠΏΠΎΠ»ΡƒΡ‡Π°Π²ΡˆΠΈΡ… стандартныС схСмы иммуносупрСссии, ΠΏΠΎ ΠΏΠΎΠ»Ρƒ, возрасту, срокам послСопСрационного лСчСния. ΠšΠΎΠ½Π²Π΅Ρ€ΡΠΈΡ Π½Π° эвСролимус ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»Π°ΡΡŒ Π² сроки ΠΎΡ‚ 1 мСс. послС ОВП, послС выписки ΠΈΠ· стационара, ΠΈ Π² Π±ΠΎΠ»Π΅Π΅ ΠΎΡ‚Π΄Π°Π»Π΅Π½Π½Ρ‹Π΅ сроки ΠΏΠΎ показаниям: ΠΏΡ€ΠΈ Π³Π΅ΠΏΠ°Ρ‚ΠΎΡ†Π΅Π»Π»ΡŽΠ»ΡΡ€Π½ΠΎΠΌ Ρ€Π°ΠΊΠ΅ Π² ΡƒΠ΄Π°Π»Π΅Π½Π½ΠΎΠΌ ΠΎΡ€Π³Π°Π½Π΅, ΠΏΡ€ΠΈ нСфротоксичности ИКН, ΠΏΡ€ΠΈ Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠΈ злокачСствСнных Π½ΠΎΠ²ΠΎΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠΉ Π²Π½Π΅ΠΏΠ΅Ρ‡Π΅Π½ΠΎΡ‡Π½ΠΎΠΉ Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ, ΠΏΡ€ΠΈ нСпСрСносимости ИКН. ΠœΠΎΠ½ΠΈΡ‚ΠΎΡ€ΠΈΡ€ΠΎΠ²Π°Π»ΠΈ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΡŽ ИКН ΠΈ эвСролимуса Π² ΠΊΡ€ΠΎΠ²ΠΈ (цСлСвая концСнтрация такролимуса – 1,5–2 Π½Π³/ΠΌΠ», эвСролимуса 3–8 Π½Π³/ΠΌΠ»). ΠžΠΏΡ€Π΅Π΄Π΅Π»ΡΠ»ΠΈ БКЀ ΠΏΠΎ Ρ„ΠΎΡ€ΠΌΡƒΠ»Π΅ CKD-EPI. ΠžΡ†Π΅Π½ΠΈΠ²Π°Π»ΠΈ Π½Π΅ΠΆΠ΅Π»Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ явлСния эвСролимуса. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. ΠŸΡ€Π΅Π΄ΡΡ‚Π°Π²Π»Π΅Π½Ρ‹ схСмы иммуносупрСссии с использованиСм эвСролимуса, Π½Π΅ΠΆΠ΅Π»Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ явлСния, основным ΠΈΠ· ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Π±Ρ‹Π»Π° дозозависимая гипСрхолСстСринСмия (34,7%), срСдний ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ холСстСрина Π² ΠΊΡ€ΠΎΠ²ΠΈ достовСрно Π½Π΅ отличался ΠΎΡ‚ Π³Ρ€ΡƒΠΏΠΏΡ‹ сравнСния 5,6 Β± 0,9 ΠΏΡ€ΠΎΡ‚ΠΈΠ² 5,1 Β± 1,4 ммоль/Π» (Z = 1,3, p = 0,17). ЭвСролимус Π½Π΅ Π±Ρ‹Π» ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½ Π½ΠΈ Ρƒ ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚Π°, нСсмотря Π½Π° Π½Π΅ΠΆΠ΅Π»Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ явлСния. Ѐункция ΠΏΠΎΡ‡Π΅ΠΊ ΡΠΎΡ…Ρ€Π°Π½ΡΠ»Π°ΡΡŒ ΡƒΠ΄ΠΎΠ²Π»Π΅Ρ‚Π²ΠΎΡ€ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ всСго ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π° наблюдСния (35 Β± 16 мСс.). БКЀ ΠΏΠΎ Ρ„ΠΎΡ€ΠΌΡƒΠ»Π΅ CKD-EPI ΠΏΠ΅Ρ€Π΅Π΄ Π½Π°Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ΠΌ ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π° – 75,8 Β± 17,5 ΠΌΠ»/ΠΌΠΈΠ½. Π£ 6 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…, ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°Π²ΡˆΠΈΡ… сСртикан Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ 5 Π»Π΅Ρ‚, конСчная БКЀ 96,6 Β± 5,1 ΠΌΠ»/ΠΌΠΈΠ½. CΡ€Π΅Π΄Π½ΠΈΠ΅ значСния БКЀ Π² Π³Ρ€ΡƒΠΏΠΏΠ΅ сСртикана Ρ‡Π΅Ρ€Π΅Π· 12 мСс. послС конвСрсии достовСрно Π½Π΅ ΠΎΡ‚Π»ΠΈΡ‡Π°Π»ΠΈΡΡŒ ΠΎΡ‚ показатСля Π² Π³Ρ€ΡƒΠΏΠΏΠ΅ сравнСния: 87,5 Β± 16,3 ΠΌΠ»/ΠΌΠΈΠ½ ΠΏΡ€ΠΎΡ‚ΠΈΠ² 94,2 Β± 16,8 ΠΌΠ»/ΠΌΠΈΠ½ (p = 0,08). Из 13 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с Π“Π¦Π  Π² ΡƒΠ΄Π°Π»Π΅Π½Π½ΠΎΠΌ ΠΎΡ€Π³Π°Π½Π΅ Ρƒ 5 выявили мСтастазы Π² ΠΏΠ΅Ρ‡Π΅Π½ΠΈ ΠΈ Π»Π΅Π³ΠΊΠΈΡ…, Π²Ρ‹ΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡ‚ΡŒ Π² этой Π³Ρ€ΡƒΠΏΠΏΠ΅ зависСла ΠΎΡ‚ соблюдСния ΠœΠΈΠ»Π°Π½ΡΠΊΠΈΡ… ΠΊΡ€ΠΈΡ‚Π΅Ρ€ΠΈΠ΅Π² (Z = 2,4, p = 0,02). Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. ЭвСролимус позволяСт ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΈΠ²Π°Ρ‚ΡŒ ΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ ΠΏΠΎΡ‡Π΅ΠΊ, для прСдотвращСния прогрСссирования ΠΏΠΎΡ‡Π΅Ρ‡Π½ΠΎΠΉ нСдостаточности ΠΎΠ½ Π΄ΠΎΠ»ΠΆΠ΅Π½ Π½Π°Π·Π½Π°Ρ‡Π°Ρ‚ΡŒΡΡ ΠΊΠ°ΠΊ ΠΌΠΎΠΆΠ½ΠΎ Ρ€Π°Π½Π΅Π΅. ΠžΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹ΠΌ считаСм сочСтаниС эвСролимуса со сниТСнной Π΄ΠΎΠ·ΠΎΠΉ ИКН. НСсмотря Π½Π° Ρ‚ΠΎ Ρ‡Ρ‚ΠΎ Π½Π΅ΠΆΠ΅Π»Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ явлСния Ρ€Π°Π·Π²ΠΈΠ²Π°ΡŽΡ‚ΡΡ Ρƒ Π±ΠΎΠ»ΡŒΡˆΠΈΠ½ΡΡ‚Π²Π° Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…, ΠΏΡ€ΠΈ Π°Π΄Π΅ΠΊΠ²Π°Ρ‚Π½ΠΎΠΌ ΠΌΠΎΠ½ΠΈΡ‚ΠΎΡ€ΠΈΠ½Π³Π΅ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΈ иммуносупрСссантов, своСврСмСнной ΠΊΠΎΡ€Ρ€Π΅ΠΊΡ†ΠΈΠΈ Π΄ΠΎΠ·Ρ‹ ΠΎΠ½ΠΈ ΠΊΡƒΠΏΠΈΡ€ΡƒΡŽΡ‚ΡΡ, ΠΎΡ‚ΠΌΠ΅Π½Ρ‹ ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π° Π½Π΅ трСбуСтся

    Attosecond nanoscale near-field sampling

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    The promise of ultrafast light-field-driven electronic nanocircuits has stimulated the development of the new research field of attosecond nanophysics. An essential prerequisite for advancing this new area is the ability to characterize optical near fields from light interaction with nanostructures, with sub-cycle resolution. Here we experimentally demonstrate attosecond near-field retrieval for a tapered gold nanowire. By comparison of the results to those obtained from noble gas experiments and trajectory simulations, the spectral response of the nanotaper near field arising from laser excitation can be extracted.113023Ysciescopu

    Carrier - envelope phase-tagged imaging of the controlled electron acceleration from SiO2 nanospheres in intense few-cycle laser fields

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    Waveform-controlled light fields offer the possibility of manipulating ultrafast electronic processes on sub-cycle timescales. The optical lightwave control of the collective electron motion in nanostructured materials is key to the design of electronic devices operating at up to petahertz frequencies. We have studied the directional control of the electron emission from 95 nm diameter SiO2 nanoparticles in few-cycle laser fields with a well-defined waveform. Projections of the three-dimensional (3D) electron momentum distributions were obtained via single-shot velocity-map imaging (VMI), where phase tagging allowed retrieving the laser waveform for each laser shot. The application of this technique allowed us to efficiently suppress background contributions in the data and to obtain very accurate information on the amplitude and phase of the waveform-dependent electron emission. The experimental data that are obtained for 4 fs pulses centered at 720 nm at different intensities in the range (1–4) Γ— 1013 W cmβˆ’2 are compared to quasi- classical mean-field Monte-Carlo simulations. The model calculations identify electron backscattering from the nanoparticle surface in highly dynamical localized fields as the main process responsible for the energetic electron emission from the nanoparticles. The local field sensitivity of the electron emission observed in our studies can serve as a foundation for future research on propagation effects for larger particles and field-induced material changes at higher intensities

    РЕЗУЛЬВАВЫ ПБИΠ₯ΠžΠ›ΠžΠ“Π˜Π§Π•Π‘ΠšΠžΠ“Πž Π˜Π‘Π‘Π›Π•Π”ΠžΠ’ΠΠΠ˜Π― Π‘ΠžΠ›Π¬ΠΠ«Π₯ Π¦Π˜Π Π ΠžΠ—ΠžΠœ ΠŸΠ•Π§Π•ΠΠ˜ Π’Π˜Π Π£Π‘ΠΠžΠ™ Π­Π’Π˜ΠžΠ›ΠžΠ“Π˜Π˜ ΠŸΠžΠ‘Π›Π• Π’Π ΠΠΠ‘ΠŸΠ›ΠΠΠ’ΠΠ¦Π˜Π˜ ΠŸΠ•Π§Π•ΠΠ˜

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    In pilot article the psychological status of patients with viral cirrhosis in various terms after liver transplantation is studied. On the basis of the used psychological techniques at 10 patients which middle age 42 Β± 7 years, average term after transplantation 11,0 Β± 6,5 months. Authors revealed the raised level of uneasiness, infringement of social contacts, especially memory decrease. Further it is planned to study interrelations and dependences of various psychological aspects of the person, features of disease and treatment.Β Π’ ΠΏΠΈΠ»ΠΎΡ‚Π½ΠΎΠΉ ΡΡ‚Π°Ρ‚ΡŒΠ΅ ΠΈΠ·ΡƒΡ‡Π΅Π½ психологичСский статус Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с Ρ†ΠΈΡ€Ρ€ΠΎΠ·ΠΎΠΌ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ вирусной этиологии Π² Ρ€Π°Π·- Π»ΠΈΡ‡Π½Ρ‹Π΅ сроки послС трансплантации ΠΏΠ΅Ρ‡Π΅Π½ΠΈ. На основании ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Π½Π½Ρ‹Ρ… психологичСских ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊ Ρƒ 10 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…, срСдний возраст ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… составил 42 Β± 7 Π»Π΅Ρ‚, срСдний срок послС ОВП ΠΎΡ‚ 11,0 Β± 6,5 мСс., выявлСны ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Ρ‹ΠΉ ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ трСвоТности, Π½Π°Ρ€ΡƒΡˆΠ΅Π½ΠΈΠ΅ ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΊΠΎΠ½Ρ‚Π°ΠΊΡ‚ΠΎΠ², мнСстичСскиС рас- стройства, особСнно сниТСниС памяти. Π’ дальнСйшСм планируСтся ΠΈΠ·ΡƒΡ‡ΠΈΡ‚ΡŒ взаимосвязи ΠΈ зависимости Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… психологичСских аспСктов личности, особСнностСй заболСвания ΠΈ лСчСния.

    ΠŸΠ•Π Π’Π«Π™ ОПЫВ ΠŸΠ Π˜ΠœΠ•ΠΠ•ΠΠ˜Π― Π’Π•Π›Π‘Π˜Π’Π£Π”Π˜ΠΠ Π£ Π‘ΠžΠ›Π¬ΠΠ«Π₯ ΠŸΠžΠ‘Π›Π• Π’Π ΠΠΠ‘ΠŸΠ›ΠΠΠ’ΠΠ¦Π˜Π˜ ΠŸΠ•Π§Π•ΠΠ˜

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    The first Russian experience of using telbivudine in liver transplant patients discussed in this article. Goal of telbivudine therapy in patients after liver transplantation was a prophylaxis and treatment of chronic hepatitis B recurrence. First data were received after 12 months since start of therapy, viral replication was inhibited, and that was similar with GLOBE trial results published at 2009.Β Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ прСдставлСн ΠΏΠ΅Ρ€Π²Ρ‹ΠΉ Π² России ΠΎΠΏΡ‹Ρ‚ примСнСния Ρ‚Π΅Π»Π±ΠΈΠ²ΡƒΠ΄ΠΈΠ½Π° Ρƒ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… послС ортотопичСской трансплантации ΠΏΠ΅Ρ‡Π΅Π½ΠΈ. ΠŸΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ использовался для ΠΏΡ€ΠΎΡ„ΠΈΠ»Π°ΠΊΡ‚ΠΈΠΊΠΈ ΠΈ лСчСния Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²Π° хроничСского Π³Π΅ΠΏΠ°Ρ‚ΠΈΡ‚Π° Π’ Π² Ρ€Π°Π·Π½Ρ‹Π΅ сроки послС ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ Π΄Π°Π½Π½Ρ‹Π΅ ΠΎ достаточной эффСктивности Ρ‚Π΅Π»Π±ΠΈΠ²ΡƒΠ΄ΠΈΠ½Π° ΠΊΠ°ΠΊ синтСтичСского Π°Π½Π°Π»ΠΎΠ³Π° Ρ‚ΠΈΠΌΠΈΠ΄ΠΈΠ½Π° Π² ΠΏΠΎΠ΄Π°Π²Π»Π΅Π½ΠΈΠΈ Ρ€Π΅ΠΏΠ»ΠΈΠΊΠ°Ρ†ΠΈΠΈ вируса ΠΏΡ€ΠΈ Π΄Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΌ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠΈ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ Π½Π΅ ΠΌΠ΅Π½Π΅Π΅ 12 мСс., Ρ‡Ρ‚ΠΎ согласуСтся с Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠΌΡƒΠ»ΡŒΡ‚ΠΈΡ†Π΅Π½Ρ‚Ρ€ΠΎΠ²ΠΎΠ³ΠΎ исслСдования GLOBE, Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°- Ρ‚Ρ‹ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ ΠΎΠΏΡƒΠ±Π»ΠΈΠΊΠΎΠ²Π°Π½Ρ‹ Π² 2009 Π³.

    Π˜Π½Π΄ΡƒΠΊΡ†ΠΈΡ Ρ†ΠΈΡ€ΠΊΡƒΠ»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… CD133+ стволовых Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ², ΠΊΠΎΠΌΠΌΠΈΡ‚ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… ΠΊ Ρ‚ΠΊΠ°Π½ΠΈ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ, Ρƒ ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² ΠΈΠ· листа оТидания трансплантации

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    Studies on the regenerative capabilities of tissues have shown that damaged liver can recover using hematopoieticΒ stem cells (HSCs), which are able not only to replace cells in the target organ, but can also deliver trophic factorsΒ that support endogenous liver regeneration. There is practically no data on how organ-derived humoral signalsΒ involve such morphogenic/trophic cells in circulation. Objective: to investigate the role of non-invasive vibromechanical percutaneous action on the liver inΒ  cirrhosis by quantification of CD133+ lymphoid HSCs with specificΒ hepatic marker alpha-fetoprotein (AFP) in patients awaiting liver transplantation. Materials and methods. InΒ order to increase the number of AFP+ part of CD133+ stem lymphoid cells in the blood, the patient’s cirrhoticΒ liver was mechanically activated by transcutaneous microvibration using electromagnetic vibrophones in contactΒ with the skin. This generated mechanical impulses with a 10 ΞΌm amplitude and a smoothly varying frequency fromΒ 0.03 kHz to 18 kHz and back to within one cycle lasting 1 minute. The amount of AFP+ lymphocyte fraction inΒ the total content of CD133+ HSCs in lymphocytes of potential recipients was monitored by flow cytometry beforeΒ and during daily 15-minute sonication of the skin zone corresponding to the liver projection for three weeks withΒ eight synphased vibraphones. Results. Sonication of the liver projection zone significantly increased the numberΒ of liver-specific CD133+ AFP+ lymphocytes by 2–3 times compared to the baseline values. Repeated similarΒ sonication of the same site after a three-week break showed a statistically insignificant increase from the initialΒ level. With a similar effect on the spinal projection in the control group of waitlisted patients with cirrhosis, thereΒ was no increase in CD133+ AFP+ lymphocytes. Conclusion. Mechanical stress prompts the organ to secreteΒ specific humoral signals that provoke the bone marrow to produce additional lymphoid stem cells committed toΒ the liver and recruit them into circulation.ИсслСдования Ρ€Π΅Π³Π΅Π½Π΅Ρ€Π°Ρ‚ΠΎΡ€Π½Ρ‹Ρ… возмоТностСй Ρ‚ΠΊΠ°Π½Π΅ΠΉ Π΄ΠΎΠΊΠ°Π·Π°Π»ΠΈ восстановлСниС ΠΏΠΎΠ²Ρ€Π΅ΠΆΠ΄Π΅Π½Π½ΠΎΠΉ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ ΡΒ ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ стволовых гСмопоэтичСских ΠΊΠ»Π΅Ρ‚ΠΎΠΊ (Π‘Π“Πš), ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ способны Π½Π΅ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ Π·Π°ΠΌΠ΅Ρ‰Π°Ρ‚ΡŒ ΠΊΠ»Π΅Ρ‚ΠΊΠΈ Π² ΠΎΡ€Π³Π°Π½Π΅-мишСни, Π½ΠΎ Ρ‚Π°ΠΊΠΆΠ΅ ΠΌΠΎΠ³ΡƒΡ‚ Π΄ΠΎΡΡ‚Π°Π²Π»ΡΡ‚ΡŒΒ  трофичСскиС Ρ„Π°ΠΊΡ‚ΠΎΡ€Ρ‹, ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΈΠ²Π°ΡŽΡ‰ΠΈΠ΅ ΡΠ½Π΄ΠΎΠ³Π΅Π½Π½ΡƒΡŽ Ρ€Π΅Π³Π΅Π½Π΅Ρ€Π°Ρ†ΠΈΡŽ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ. Π”Π°Π½Π½Ρ‹Ρ… ΠΎΒ  Ρ‚ΠΎΠΌ, ΠΊΠ°ΠΊ ΠΎΡ€Π³Π°Π½ΠΎΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ΄Π½Ρ‹Π΅ Π³ΡƒΠΌΠΎΡ€Π°Π»ΡŒΠ½Ρ‹Π΅ сигналы Π²ΠΎΠ²Π»Π΅ΠΊΠ°ΡŽΡ‚ Ρ‚Π°ΠΊΠΈΠ΅ ΠΌΠΎΡ€Ρ„ΠΎΠ³Π΅Π½Π½Ρ‹Π΅/трофичСскиС ΠΊΠ»Π΅Ρ‚ΠΊΠΈ Π² Ρ†ΠΈΡ€ΠΊΡƒΠ»ΡΡ†ΠΈΡŽ, практичСски Π½Π΅Ρ‚. ЦСль: ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚ΡŒ Ρ€ΠΎΠ»ΡŒ Π½Π΅ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΈΠ±Ρ€ΠΎ-мСханичСского чрСскоТного воздСйствия  Π½Π° ΠΏΠ΅Ρ‡Π΅Π½ΡŒ ΠΏΡ€ΠΈ Ρ†ΠΈΡ€Ρ€ΠΎΠ·Π΅ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ количСствСнного ΡƒΡ‡Π΅Ρ‚Π° Π² ΠΊΡ€ΠΎΠ²ΠΈΒ Ρ„Ρ€Π°ΠΊΡ†ΠΈΠΈ CD133+ гСмопоэтичСских стволовых ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π»ΠΈΠΌΡ„ΠΎΠΈΠ΄Π½ΠΎΠ³ΠΎ ряда со спСцифичСским ΠΏΠ΅Ρ‡Π΅Π½ΠΎΡ‡Π½Ρ‹ΠΌΒ ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠΌ Π°Π»ΡŒΡ„Π°-Ρ„Π΅Ρ‚ΠΎΠΏΡ€ΠΎΡ‚Π΅ΠΈΠ½ΠΎΠΌ (АЀП) Ρƒ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…, ΠΎΠΆΠΈΠ΄Π°ΡŽΡ‰ΠΈΡ… Ρ‚Ρ€Π°Π½ΡΠΏΠ»Π°Π½Ρ‚Π°Ρ†ΠΈΡŽ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ. ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π”Π»ΡΒ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΡ Π² ΠΊΡ€ΠΎΠ²ΠΈ числа АЀП-ΠΏΠΎΠ·ΠΈΡ‚ΠΈΠ²Π½ΠΎΠΉ части CD133+ стволовых Π»ΠΈΠΌΡ„ΠΎΠΈΠ΄Π½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ мСханичСски активировали Ρ†ΠΈΡ€Ρ€ΠΎΡ‚ΠΈΡ‡Π΅ΡΠΊΡƒΡŽ ΠΏΠ΅Ρ‡Π΅Π½ΡŒ ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚Π° ΠΏΡƒΡ‚Π΅ΠΌ чрСскоТной ΠΌΠΈΠΊΡ€ΠΎΠ²ΠΈΠ±Ρ€Π°Ρ†ΠΈΠΈ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΊΠΎΠ½Ρ‚Π°ΠΊΡ‚ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… с ΠΊΠΎΠΆΠ΅ΠΉ элСктромагнитных  Π²ΠΈΠ±Ρ€ΠΎΡ„ΠΎΠ½ΠΎΠ², Π³Π΅Π½Π΅Ρ€ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… мСханичСскиС ΠΈΠΌΠΏΡƒΠ»ΡŒΡΡ‹ Π°ΠΌΠΏΠ»ΠΈΡ‚ΡƒΠ΄ΠΎΠΉΒ 10 ΠΌΠΊΠΌ ΠΈ ΠΏΠ»Π°Π²Π½ΠΎ ΠΌΠ΅Π½ΡΡŽΡ‰Π΅ΠΉΡΡ частотой ΠΎΡ‚ 0,03 Π“Ρ† Π΄ΠΎ 18 ΠΊΠ“Ρ† ΠΈ ΠΎΠ±Ρ€Π°Ρ‚Π½ΠΎ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ ΠΎΠ΄Π½ΠΎΠ³ΠΎ Ρ†ΠΈΠΊΠ»Π°Β  ΠΏΡ€ΠΎΠ΄ΠΎΠ»ΠΆΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ 1 ΠΌΠΈΠ½ΡƒΡ‚Π°. ΠšΠΎΠ»ΠΈΡ‡Π΅ΡΡ‚Π²ΠΎ АЀП-ΠΏΠΎΠ»ΠΎΠΆΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ Ρ„Ρ€Π°ΠΊΡ†ΠΈΠΈ Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ² Π²Β  ΠΎΠ±Ρ‰Π΅ΠΌ содСрТании CD133+ Π‘Π“Πš Π² Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚Π°Ρ… ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… Ρ€Π΅Ρ†ΠΈΠΏΠΈΠ΅Π½Ρ‚ΠΎΠ² ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΠΈΡ€ΠΎΠ²Π°Π»ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΏΡ€ΠΎΡ‚ΠΎΡ‡Π½ΠΎΠΉ Ρ†ΠΈΡ‚ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠΈΒ Π΄ΠΎ ΠΈ Π²ΠΎ врСмя Π΅ΠΆΠ΅Π΄Π½Π΅Π²Π½ΠΎΠ³ΠΎ 15-ΠΌΠΈΠ½ΡƒΡ‚Π½ΠΎΠ³ΠΎ сонирования ΠΊΠΎΠΆΠ½ΠΎΠΉ Π·ΠΎΠ½Ρ‹, ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅ΠΉ ΠΏΡ€ΠΎΠ΅ΠΊΡ†ΠΈΠΈ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ,Β Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ Ρ‚Ρ€Π΅Ρ… нСдСль, восСмью синфазированными Π²ΠΈΠ±Ρ€ΠΎΡ„ΠΎΠ½Π°ΠΌΠΈ. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π—Π²ΡƒΠΊΠΎΠ²ΠΎΠ΅ воздСйствиС Π½Π°Β Π·ΠΎΠ½Ρƒ ΠΏΡ€ΠΎΠ΅ΠΊΡ†ΠΈΠΈ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ достовСрно ΡƒΠ²Π΅Π»ΠΈΡ‡ΠΈΠ»ΠΎ количСство ΠΏΠ΅Ρ‡Π΅Π½ΠΎΡ‡Π½ΠΎ-спСцифичСских АЀП-ΠΏΠΎΠ·ΠΈΡ‚ΠΈΠ²Π½Ρ‹Ρ…Β CD133+ Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ² ΠΊΡ€ΠΎΠ²ΠΈ Π² 2–3 Ρ€Π°Π·Π° ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с Π±Π°Π·ΠΎΠ²Ρ‹ΠΌΠΈ значСниями. ΠŸΠΎΠ²Ρ‚ΠΎΡ€Π½ΠΎΠ΅ Π°Π½Π°Π»ΠΎΠ³ΠΈΡ‡Π½ΠΎΠ΅ сонированиС Ρ‚ΠΎΠΉΒ  ΠΆΠ΅ Π·ΠΎΠ½Ρ‹ послС Ρ‚Ρ€Π΅Ρ…Π½Π΅Π΄Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ΅Ρ€Π΅Ρ€Ρ‹Π²Π° ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ статистичСски Π½Π΅ Π·Π½Π°Ρ‡ΠΈΠΌΠΎΠ΅Β  ΠΏΡ€Π΅Π²Ρ‹ΡˆΠ΅Π½ΠΈΠ΅Β ΠΈΡΡ…ΠΎΠ΄Π½ΠΎΠ³ΠΎ уровня. ΠŸΡ€ΠΈ Π°Π½Π°Π»ΠΎΠ³ΠΈΡ‡Π½ΠΎΠΌ воздСйствии Π½Π° ΠΏΡ€ΠΎΠ΅ΠΊΡ†ΠΈΡŽ ΠΏΠΎΠ·Π²ΠΎΠ½ΠΎΡ‡Π½ΠΈΠΊΠ° Π² ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΠ΅ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… Ρ†ΠΈΡ€Ρ€ΠΎΠ·ΠΎΠΌ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ ΠΈΠ· листа оТидания  Ρ„Π΅Π½ΠΎΠΌΠ΅Π½ увСличСния Π°Π»ΡŒΡ„Π°-Ρ„Π΅Ρ‚ΠΎΠΏΡ€ΠΎΡ‚Π΅ΠΈΠ½-ΠΏΠΎΠ·ΠΈΡ‚ΠΈΠ²Π½Ρ‹Ρ… CD133+Β Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ² Π½Π΅ Π²ΠΎΠ·Π½ΠΈΠΊΠ°Π». Π’Ρ‹Π²ΠΎΠ΄. ΠœΠ΅Ρ…Π°Π½ΠΈΡ‡Π΅ΡΠΊΠΈΠΉ стрСсс ΠΏΠΎΠ±ΡƒΠΆΠ΄Π°Π΅Ρ‚ ΠΎΡ€Π³Π°Π½ ΡΠ΅ΠΊΡ€Π΅Ρ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΡΠΏΠ΅Ρ†ΠΈΡ„ΠΈΡ‡Π΅ΡΠΊΠΈΠ΅Β Π³ΡƒΠΌΠΎΡ€Π°Π»ΡŒΠ½Ρ‹Π΅ сигналы, ΠΏΡ€ΠΎΠ²ΠΎΡ†ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠ΅ костный ΠΌΠΎΠ·Π³ ΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΡ‚ΡŒ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ ΠΊΠΎΠΌΠΌΠΈΡ‚ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Π΅ ΠΊΒ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ стволовыС Π»ΠΈΠΌΡ„ΠΎΠΈΠ΄Π½Ρ‹Π΅ ΠΊΠ»Π΅Ρ‚ΠΊΠΈ ΠΈ Ρ€Π΅ΠΊΡ€ΡƒΡ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΈΡ… Π² Ρ†ΠΈΡ€ΠΊΡƒΠ»ΡΡ†ΠΈΡŽ
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