89 research outputs found

    Π€ΠžΠ’ΠžΠ”Π˜ΠΠΠœΠ˜Π§Π•Π‘ΠšΠΠ― Π˜ΠΠΠšΠ’Π˜Π’ΠΠ¦Π˜Π― MYCOBACTERIUM TUBERCULOSIS РАДАΠ₯Π›ΠžΠ Π˜ΠΠžΠœ IN VITRO

    Get PDF
    Goal: to detect the best mode of in vitro photodynamic inactivation of M. tuberculosis by Radahlorin.Subjects and methods. The activity of culture of M. tuberculosis, H37Rv strain, photosensitized by 0.00005% Radohlorin was compared and the intensity of growth was assessed after photodynamic inactivation by different doses of light energy with 662 nm wavelength.Results. For the first time, anti-microbial properties of E6 chlorine in the form of medicamental photosensitizer (0.00005% Radohlorin) suppressing museum strain of M. tuberculosis of H37Rv were detected. Photoinactivation of M. tuberculosis depends on the dose and achieves its maximum in 10Β minutes of light exposure with light energy of 0.5 W. ЦСль: Π²Ρ‹ΡΠ²ΠΈΡ‚ΡŒ ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹ΠΉ Ρ€Π΅ΠΆΠΈΠΌ фотодинамичСской ΠΈΠ½Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ (Π€Π”Π˜) M. tuberculosis Ρ€Π°Π΄Π°Ρ…Π»ΠΎΡ€ΠΈΠ½ΠΎΠΌ in vitro.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ ΡΡ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Π°Π»ΡŒΠ½ΠΎΠΉ активности M. tuberculosis H37Rv, фотосСнсибилизированных Ρ€Π°Π΄Π°Ρ…Π»ΠΎ- Ρ€ΠΈΠ½ΠΎΠΌ 0,00005%, с ΠΎΡ†Π΅Π½ΠΊΠΎΠΉ интСнсивности роста послС Π€Π”Π˜ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ Π΄ΠΎΠ·Π°ΠΌΠΈ свСтовой энСргии с Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ 662 Π½ΠΌ.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π’ΠΏΠ΅Ρ€Π²Ρ‹Π΅ выявлСны Π°Π½Ρ‚ΠΈΠΌΠΈΠΊΠΎΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Π΅ свойства Ρ…Π»ΠΎΡ€ΠΈΠ½Π° Π•6 Π² Π²ΠΈΠ΄Π΅ лСкарствСнного фотосСнсибилизатора (Ρ€Π°Π΄Π°Ρ…Π»ΠΎΡ€ΠΈΠ½ 0,00005%) Π² ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ ΠΌΡƒΠ·Π΅ΠΉΠ½ΠΎΠ³ΠΎ ΡˆΡ‚Π°ΠΌΠΌΠ° M. tuberculosis H37Rv. Ѐотоинактивация возбудитСля дозозависима ΠΈ достигаСт ΠΏΡ€Π΅Π΄Π΅Π»ΡŒΠ½Ρ‹Ρ… Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΉ Ρ‡Π΅Ρ€Π΅Π· 10 ΠΌΠΈΠ½ свСтового воздСйствия ΠΏΡ€ΠΈ мощности свСтовой энСргии 0,5 Π’Ρ‚.

    ЀотодинамичСская инактивация Mycobacterium tuberculosis ΠΌΠ΅Ρ‚ΠΈΠ»Π΅Π½ΠΎΠ²Ρ‹ΠΌ синим in vitro

    Get PDF
    The objective: to investigate the anti-tuberculosis effect of laser photodynamic inactivation (PDI) of M. tuberculosis H37Rv in vitro by methylene blue (MB) in the minimum concentration (1 ΞΌg/ml) with laser radiation of 662 nm. Subjects and methods. A comparative analysis of the intensity of growth of Mycobacterium tuberculosis H37Rv after laser irradiation and laser FDI by MB with different doses of light energy was carried out. Results. Laser radiation with a wavelength of 662 nm was found to have an inhibitory effect on the growth of M. tuberculosis H37Rv. FDI of Mycobacterium tuberculosis was first registered in the presence of a minimum concentration of MB (1 Β΅g/ml) which suppressed colony growth by 97 and 93% when they were processed by radiation with a wavelength of 662 nm with the lowest density of doses of light energy (46.9 and 93.75 J/cm2).ЦСль: исслСдованиС ΠΏΡ€ΠΎΡ‚ΠΈΠ²ΠΎΡ‚ΡƒΠ±Π΅Ρ€ΠΊΡƒΠ»Π΅Π·Π½Ρ‹Ρ… эффСктов Π»Π°Π·Π΅Ρ€Π½ΠΎΠΉ фотодинамичСской ΠΈΠ½Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ (Π€Π”Π˜) M. tuberculosis H37Rv in vitro ΠΌΠ΅Ρ‚ΠΈΠ»Π΅Π½ΠΎΠ²Ρ‹ΠΌ синим (МБ) Π² минимальной ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΈ (1 ΠΌΠΊΠ³/ΠΌΠ») ΠΏΡ€ΠΈ Π»Π°Π·Π΅Ρ€Π½ΠΎΠΌ ΠΈΠ·Π»ΡƒΡ‡Π΅Π½ΠΈΠΈ Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ 662 Π½ΠΌ.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ ΡΡ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· интСнсивности роста Mycobacterium tuberculosis H37Rv послС Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ облучСния ΠΈ Π»Π°Π·Π΅Ρ€Π½ΠΎΠΉ Π€Π”Π˜ МБ ΠΏΡ€ΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Π΄ΠΎΠ·Π°Ρ… свСтовой энСргии.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. ΠžΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΎ, Ρ‡Ρ‚ΠΎ Π»Π°Π·Π΅Ρ€Π½ΠΎΠ΅ ΠΈΠ·Π»ΡƒΡ‡Π΅Π½ΠΈΠ΅ Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ 662 Π½ΠΌ ΠΎΠΊΠ°Π·Ρ‹Π²Π°Π΅Ρ‚ ΠΈΠ½Π³ΠΈΠ±ΠΈΡ€ΡƒΡŽΡ‰Π΅Π΅ дСйствиС Π½Π° ростовыС свойства M. tuberculosis H37Rv. Π’ΠΏΠ΅Ρ€Π²Ρ‹Π΅ зарСгистрирована Π€Π”Π˜ ΠΌΠΈΠΊΠΎΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠΉ Ρ‚ΡƒΠ±Π΅Ρ€ΠΊΡƒΠ»Π΅Π·Π° Π² присутствии минимальной ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΈ МБ (1 ΠΌΠΊΠ³/ΠΌΠ»), ΠΏΡ€ΠΈ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ рСализуСтся ΠΏΠΎΠ΄Π°Π²Π»Π΅Π½ΠΈΠ΅ роста ΠΊΠΎΠ»ΠΎΠ½ΠΈΠΉ Π½Π° 97 ΠΈ 93% ΠΏΡ€ΠΈ ΠΈΡ… ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ ΠΈΠ·Π»ΡƒΡ‡Π΅Π½ΠΈΠ΅ΠΌ Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ 662 Π½ΠΌ с наимСньшими значСниями плотности Π΄ΠΎΠ· свСтовой энСргии (46,9 ΠΈ 93,75 Π”ΠΆ/см2)

    Π­Ρ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ фотодинамичСской Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Π² ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Ρ‚ΡƒΠ±Π΅Ρ€ΠΊΡƒΠ»Π΅Π·Π° Ρƒ ΠΌΡ‹ΡˆΠ΅ΠΉ

    Get PDF
    The objective: to study the efficacy of antimicrobial photodynamic therapy (APDT) using hydroxyaluminum phthalocyanine (Photosens) as a photosensitizer in the experimental model of tuberculosis infection in mice.Subjects and Methods. Balb/cmice were infected with the multiple drug resistant (MDR) strain of M. tuberculosis Beijing BO/W148. APDT with hydroxyaluminum phthalocyanine and red laser light exposure were started on Day 45. A total of 4 sessions of APDT on the projection of both lungs, liver and spleen were performed. On Day 60, the therapeutic eff ect of APDTwas assessed by evaluation of severity of mycobacterial load and specific granulomatous infiltration in the lungs, liver and spleen. The absorption of light energy of laser radiation by the chest and abdominal walls, as well as tissues of lungs, liver and spleen was determined by photometry using afluovisor.Results. The tissues of the experimental animal retain a significant amount of light energy, however, the residual value of light transmission is sufficient to provide a pronounced therapeutic effect which manifests itself as a significant decrease of mycobacterial load and specific inflammatory process in all the studied internal organs.Conclusion. APDT may be an effective tool to treat some forms of tuberculous infection including those caused by M. tuberculosis with MDR.ЦСль исслСдования: ΠΈΠ·ΡƒΡ‡ΠΈΡ‚ΡŒ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π°Π½Ρ‚ΠΈΠΌΠΈΠΊΡ€ΠΎΠ±Π½ΠΎΠΉ фотодинамичСской Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ (АЀДВ) с использованиСм Π² качСствС фотосСнсибилизатора Ρ„Ρ‚Π°Π»ΠΎΡ†ΠΈΠ½Π°Π½Π° Π³ΠΈΠ΄Ρ€ΠΎΠΊΡΠΈΠ°Π»ΡŽΠΌΠΈΠ½ΠΈΡ (ЀотосСнс) Π² ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ Ρ‚ΡƒΠ±Π΅Ρ€ΠΊΡƒΠ»Π΅Π·Π½ΠΎΠΉ ΠΈΠ½Ρ„Π΅ΠΊΡ†ΠΈΠΈ Ρƒ ΠΌΡ‹ΡˆΠ΅ΠΉ.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. ΠœΡ‹ΡˆΠΈ Π»ΠΈΠ½ΠΈΠΈ Balb/c ΠΈΠ½Ρ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π»ΠΈΡΡŒ ΡˆΡ‚Π°ΠΌΠΌΠΎΠΌ M. tuberculosis с мноТСствСнной лСкарствСнной ΡƒΡΡ‚ΠΎΠΉΡ‡ΠΈΠ²ΠΎΡΡ‚ΡŒΡŽ (ΠœΠ›Π£) Beij ing BO/W148. АЀДВ с использованиСм Ρ„Ρ‚Π°Π»ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½Π° Π³ΠΈΠ΄Ρ€ΠΎΠΊΡΠΈΠ°Π»ΡŽΠΌΠΈΠ½ΠΈΡ ΠΈ свСтового воздСйствия красным Π»Π°Π·Π΅Ρ€ΠΎΠΌ Π½Π°Ρ‡ΠΈΠ½Π°Π»ΠΈ Π½Π° 45 сутки. ВсСго Π±Ρ‹Π»ΠΎ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ 4 сСанса АЀДВ Π½Π° ΠΏΡ€ΠΎΠ΅ΠΊΡ†ΠΈΠΈ ΠΎΠ±ΠΎΠΈΡ… Π»Π΅Π³ΠΊΠΈΡ…, ΠΏΠ΅Ρ‡Π΅Π½ΠΈ ΠΈ сСлСзСнки. ВСрапСвтичСский эффСкт АЀДВ ΠΎΡ†Π΅Π½ΠΈΠ²Π°Π»ΠΈ Π½Π° 60-Π΅ сутки ΠΏΠΎ выраТСнности ΠΌΠΈΠΊΠΎΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ ΠΈ спСцифичСской Π³Ρ€Π°Π½ΡƒΠ»Π΅ΠΌΠ°Ρ‚ΠΎΠ·Π½ΠΎΠΉ ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ Π² Π»Π΅Π³ΠΊΠΈΡ…, ΠΏΠ΅Ρ‡Π΅Π½ΠΈ ΠΈ сСлСзСнкС. ΠΠ±ΡΠΎΡ€Π±Ρ†ΠΈΡŽ свСтовой энСргии Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ излучСния Π³Ρ€ΡƒΠ΄Π½ΠΎΠΉ ΠΈ Π±Ρ€ΡŽΡˆΠ½ΠΎΠΉ стСнкой, Π° Ρ‚Π°ΠΊΠΆΠ΅ тканями Π»Π΅Π³ΠΊΠΈΡ…, ΠΏΠ΅Ρ‡Π΅Π½ΠΈ ΠΈ сСлСзСнки опрСдСляли ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ Ρ„ΠΎΡ‚ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠΈ с использованиСм Ρ„Π»ΡƒΠΎΠ²ΠΈΠ·ΠΎΡ€Π°.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π’ΠΊΠ°Π½ΠΈ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΆΠΈΠ²ΠΎΡ‚Π½ΠΎΠ³ΠΎ Π·Π°Π΄Π΅Ρ€ΠΆΠΈΠ²Π°ΡŽΡ‚ Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ΅ количСство свСтовой энСргии, ΠΎΠ΄Π½Π°ΠΊΠΎ остаточная Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Π° свСтопропускания достаточна для оказания Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ тСрапСвтичСского эффСкта, ΠΏΡ€ΠΎΡΠ²Π»ΡΠ²ΡˆΠ΅Π³ΠΎΡΡ Π² Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΌ сниТСнии ΠΌΠΈΠΊΠΎΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ ΠΈ спСцифичСского Π²ΠΎΡΠΏΠ°Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ процСсса Π²ΠΎ всСх исслСдованных Π²Π½ΡƒΡ‚Ρ€Π΅Π½Π½ΠΈΡ… ΠΎΡ€Π³Π°Π½Π°Ρ….Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. ИспользованиС АЀДВ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ эффСктивным способом лСчСния Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Ρ„ΠΎΡ€ΠΌ Ρ‚ΡƒΠ±Π΅Ρ€ΠΊΡƒΠ»Π΅Π·Π½ΠΎΠΉ ΠΈΠ½Ρ„Π΅ΠΊΡ†ΠΈΠΈ, Π² Ρ‚ΠΎΠΌ числС Π²Ρ‹Π·Π²Π°Π½Π½Ρ‹Ρ… M. tuberculosis с ΠœΠ›Π£

    Strategies for Abatement of Contamination of Tableted Live Plague Vaccine at Different Stages of Manufacturing

    Get PDF
    Nowadays, problem of tableted drug form contamination with extraneous micro-flora is in the spotlight of scientists, as the specific share of these medical preparations in the world market amounts to more than 60 % and has a tendency to increase. Thus, objective of the study is to investigate the degree of contamination of the basic and auxiliary raw materials at different stages of live plague vaccine manufacturing, rapid dissolving tablets, and the ways to reduce it. Materials and methods. Utilized has been lyophilized Y. pestis live culture of the vaccine strain EV NIIEG, and the live plague vaccine, rapid dissolving tablets. Carried out has been assessment of β€œmicrobiological purity” at different stages of tableted live plague vaccine manufacturing: grinding, mixing, granulation, sublimation, and palletizing. Results and conclusions. Identified is the dynamic pattern of quantitative micro-flora composition of the mentioned above drug. Established is the alteration of microbial impurity at separate technological manufacturing steps. Specified is the technological stage with the most expressed contamination. Analysis of factors, which affect vaccine impurity, has revealed that finished dosage-form quality improvement is impossible without incoming control of stock and auxiliary materials, as well as enhancement of manufacturing procedure up to the level, complying with applicable pharmaceutical production standards. It is experimentally proved that series of tableted live plague vaccine, obtained using modernized technological equipment, provide for 3-fold reduction of contamination

    Π’Π›Π˜Π―ΠΠ˜Π• Π›ΠΠ—Π•Π ΠΠžΠ“Πž Π˜Π—Π›Π£Π§Π•ΠΠ˜Π― Π”Π›Π˜ΠΠžΠ™ Π’ΠžΠ›ΠΠ« 662 НМ НА РОБВ MYCOBACTERIUM TUBERCULOSIS INΒ VITRO

    Get PDF
    Goal of the study: to define the effect of various doses of laser radiation with 662 nm wave on the growth of M. tuberculosis in vitro.Materials and methods. Samples of mycobacterial suspension of M. tuberculosis H37Rv were processed by monopositional light radiation (Ξ» =Β 662Β nm) in six dosing regimens varying in power and duration of the exposure to the light. All samples of mycobacterial suspension of M. tuberculosis were inoculated on the solid nutritional media of Lowenstein-Jensen in triplets for each dose of the exposure to light. Cultures were incubated under 37Β°Π‘ for 90 days with weekly inspection of samples.Results. Continuous irradiation by diffused laser with 662 nm wave provides the most expressed bacteriostatic and bactericidal effects against M.Β tuberculosis H37Rv under the density of the energy dose of 234.5 and 703.5 of J/sq.cm. Such a dose was obtained through 5 and 15-minute exposure respectively. ЦСль исслСдования: ΡƒΡΡ‚Π°Π½ΠΎΠ²ΠΈΡ‚ΡŒ in vitro влияниС Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Π΄ΠΎΠ· Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ излучСния Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ 662 Π½ΠΌ Π½Π° ростовыС свойства M.Β tuberculosis.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. ВоздСйствиС Π½Π° ΠΎΠ±Ρ€Π°Π·Ρ†Ρ‹ ΠΌΠΈΠΊΠΎΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ взвСси M. tuberculosis H37Rv осущСствляли Π½Π΅ΠΏΡ€Π΅Ρ€Ρ‹Π²Π½Ρ‹ΠΌ ΠΌΠΎΠ½ΠΎΠΏΠΎΠ·ΠΈΡ†ΠΈΠΎΠ½Π½Ρ‹ΠΌ свСтовым ΠΈΠ·Π»ΡƒΡ‡Π΅Π½ΠΈΠ΅ΠΌ (Ξ» = 662 Π½ΠΌ) Π² ΡˆΠ΅ΡΡ‚ΠΈ Ρ€Π΅ΠΆΠΈΠΌΠ°Ρ… дозирования, зависящих ΠΎΡ‚ мощности ΠΈ Π΄Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ свСтового воздСйствия. Π˜Π½ΠΎΠΊΡƒΠ»ΡΡ†ΠΈΡ всСх ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² суспСнзий ΠΌΠΈΠΊΠΎΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠΉ Ρ‚ΡƒΠ±Π΅Ρ€ΠΊΡƒΠ»Π΅Π·Π° ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΠ»Π°ΡΡŒ Π½Π° ΠΏΠ»ΠΎΡ‚Π½Ρ‹Π΅ ΠΏΠΈΡ‚Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ срСды Π›Π΅Π²Π΅Π½ΡˆΡ‚Π΅ΠΉΠ½Π° – ЙСнсСна Π² Ρ‚Ρ€ΠΈΠΏΠ»Π΅Ρ‚Π°Ρ… для ΠΊΠ°ΠΆΠ΄ΠΎΠΉ Π΄ΠΎΠ·Ρ‹ свСтового воздСйствия. Π˜Π½ΠΊΡƒΠ±Π°Ρ†ΠΈΡ посСвов ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΠ»Π°ΡΡŒ ΠΏΡ€ΠΈ 37Β°Π‘ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ 90 Π΄Π½Π΅ΠΉ с Π΅ΠΆΠ΅Π½Π΅Π΄Π΅Π»ΡŒΠ½Ρ‹ΠΌ пСрСсмотром ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ².Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. НСпрСрывноС ΠΈΠ·Π»ΡƒΡ‡Π΅Π½ΠΈΠ΅ ΠΏΠΎΠ»ΡƒΠΏΡ€ΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²ΠΎΠ³ΠΎ Π»Π°Π·Π΅Ρ€Π° с Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ 662 Π½ΠΌ ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ‚ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½Ρ‹ΠΌΠΈ бактСриостатичСскими ΠΈ Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΡ†ΠΈΠ΄Π½Ρ‹ΠΌΠΈ эффСктами Π² ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ M. tuberculosis H37Rv ΠΏΡ€ΠΈ плотности Π΄ΠΎΠ·Ρ‹ энСргии 234,5 ΠΈ 703,5 Π”ΠΆ/см2 . Вакая Π΄ΠΎΠ·Π° Π±Ρ‹Π»Π° ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π° ΠΏΡ€ΠΈ 5- ΠΈ 15-ΠΌΠΈΠ½ΡƒΡ‚Π½ΠΎΠΉ экспозиции соотвСтствСнно.

    Enantioselective component selection in multicomponent supramolecular gels

    Get PDF
    We investigate a two-component acid-amine gelation system in which chirality plays a vital role. A carboxylic acid based on a second generation l-lysine dendron interacts with chiral amines and subsequently assembles into supramolecular gel fibers. The chirality of the amine controls the assembly of the resulting diastereomeric complexes, even if this chirality is relatively "poor quality". Importantly, the selective incorporation of one enantiomer of an amine over the other into the gel network has been demonstrated, with the R amine that forms complexes which assemble into the most stable gel being primarily selected for incorporation. Thermodynamic control has been proven by forming a gel exclusively with an S amine, allowing the R enantiomer to diffuse through the gel network, and displacing it from the "solidlike" fibers, demonstrating that these gels adapt and evolve in response to chemical stimuli to which they are exposed. Excess amine, which remains unincorporated within the solidlike gel fiber network, can diffuse out and be reacted with an isocyanate, allowing us to quantify the enantioselectivity of component selection but also demonstrating how gels can act as selective reservoirs of potential reagents, releasing them on demand to undergo further reactions; hence, component-selective gel assembly can be coupled with controlled reactivity

    Polymorphism: an evaluation of the potential risk to the quality of drug products from the FarmΓ‘cia Popular Rede PrΓ³pria

    Full text link
    • …
    corecore