841 research outputs found

    Fluorescence-based proteasome activity profiling

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    With the proteasome emerging as a therapeutic target for cancer treatment, accurate tools for monitoring proteasome (inhibitor) activity are in demand. In this chapter, we describe the synthesis and use of a fluorescent proteasome activity probe that allows for accurate profiling of proteasomal activity in cell lysates, intact cells, and murine and human patient-derived material, with high sensitivity using SDS-PAGE. The probe allows for direct scanning of the gel for fluorescent emission of the distinct proteasomal subunits and circumvents the use of Western blot analysis. Due to its suitable biochemical and biophysical properties, the fluorescent probe can also be used for confocal laser scanning microscopy and flow cytometry-based experiments

    Deep brain stimulation of the central thalamus restores arousal and motivation in a zolpidem-responsive patient with akinetic mutism after severe brain injury

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    After severe brain injury, zolpidem is known to cause spectacular, often short-lived, restorations of brain functions in a small subgroup of patients. Previously, we showed that these zolpidem-induced neurological recoveries can be paralleled by significant changes in functional connectivity throughout the brain. Deep brain stimulation (DBS) is a neurosurgical intervention known to modulate functional connectivity in a wide variety of neurological disorders. In this study, we used DBS to restore arousal and motivation in a zolpidem-responsive patient with severe brain injury and a concomitant disorder of diminished motivation, more than 10 years after surviving hypoxic ischemia. We found that DBS of the central thalamus, targeted at the centromedian-parafascicular complex, immediately restored arousal and was able to transition the patient from a state of deep sleep to full wakefulness. Moreover, DBS was associated with temporary restoration of communication and ability to walk and eat in an otherwise wheelchair-bound and mute patient. With the use of magnetoencephalography (MEG), we revealed that DBS was generally associated with a marked decrease in aberrantly high levels of functional connectivity throughout the brain, mimicking the effects of zolpidem. These results imply that 'pathological hyperconnectivity' after severe brain injury can be associated with reduced arousal and behavioral performance and that DBS is able to modulate connectivity towards a 'healthier baseline' with lower synchronization, and, can restore functional brain networks long after severe brain injury. The presence of hyperconnectivity after brain injury may be a possible future marker for a patient's responsiveness for restorative interventions, such as DBS, and suggests that lower degrees of overall brain synchronization may be conducive to cognition and behavioral responsiveness

    Активні ΡˆΡ‚Π°ΠΌΠΈ Π΅Π½Ρ‚ΠΎΠΌΠΎΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Π½ΠΈΡ… Π±Π°ΠΊΡ‚Π΅Ρ€Ρ–ΠΉ Bacillus thuringiensis Π· ΠΊΠΎΠΌΠ°Ρ… ΠΏΡ€ΠΈΡ€ΠΎΠ΄Π½ΠΈΡ… популяцій

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    Π— ΠΊΠΎΠΌΠ°Ρ… ΠΏΡ€ΠΈΡ€ΠΎΠ΄Π½ΠΈΡ… популяцій півдня Π£ΠΊΡ€Π°Ρ—Π½ΠΈ Π²ΠΈΠ΄Ρ–Π»Π΅Π½ΠΎ ΡˆΡ‚Π°ΠΌΠΈ Π±Π°ΠΊΡ‚Π΅Ρ€Ρ–ΠΉ Bacillus thuringiensis, Ρ‰ΠΎ Π΄Ρ–ΡŽΡ‚ΡŒ Π΅Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎ ΠΏΡ€ΠΎΡ‚ΠΈ листогризучих ΠΊΠΎΠΌΠ°Ρ… Lepidoptera Ρ– Diptera. Π’ΠΈΠ²Ρ‡Π΅Π½Ρ– Ρ„Ρ–Π·Ρ–ΠΎΠ»ΠΎΠ³ΠΎ-Π±Ρ–ΠΎΡ…Ρ–ΠΌΡ–Ρ‡Π½Ρ– властивості Ρ– спСктр Π΅Π½Ρ‚ΠΎΠΌΠΎΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Π½ΠΎΡ— Π΄Ρ–Ρ— Π΄Π°Π½ΠΈΡ… Π±Π°ΠΊΡ‚Π΅Ρ€Ρ–ΠΉ. ΠΠΊΡ‚ΠΈΠ²Π½Ρ–ΡΡ‚ΡŒ ΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Ρ–Π² ΠΏΡ€ΠΎΡ‚ΠΈ Π»ΠΈΡ‡ΠΈΠ½ΠΎΠΊ ΠΊΠΎΠ»ΠΎΡ€Π°Π΄ΡΡŒΠΊΠΎΠ³ΠΎ ΠΆΡƒΠΊΠ° (Leptinotarsa decemlineata, ряд Coleoptera), Π³ΡƒΡΠ΅Π½ΠΈΡ†ΡŒ капустяної совки (Mamesta brassicae, ряд Lepidoptera) Ρ‚Π° Π°ΠΌΠ΅Ρ€ΠΈΠΊΠ°Π½ΡΡŒΠΊΠΎΠ³ΠΎ Π±Ρ–Π»ΠΎΠ³ΠΎ ΠΌΠ΅Ρ‚Π΅Π»ΠΈΠΊΠ° (Hyphantria cunea Dryri, ряд Lepidoptera) молодшого Π²Ρ–ΠΊΡƒ ΡΡ‚Π°Π½ΠΎΠ²ΠΈΡ‚ΡŒ 74,7-100 %. Π¨Ρ‚Π°ΠΌΠΈ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½ΠΎ Π΄ΠΎ ΠΊΠΎΠ»Π΅ΠΊΡ†Ρ–Ρ— Π±Π°ΠΊΡ‚Π΅Ρ€Ρ–Π°Π»ΡŒΠ½ΠΈΡ… Π΅Π½Ρ‚ΠΎΠΌΠΎΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Ρ–Π² Інституту ΡΡ–Π»ΡŒΡΡŒΠΊΠΎΠ³ΠΎΡΠΏΠΎΠ΄Π°Ρ€ΡΡŒΠΊΠΎΡ— ΠΌΡ–ΠΊΡ€ΠΎΠ±Ρ–ΠΎΠ»ΠΎΠ³Ρ–Ρ— УААН як пСрспСктивні для Ρ€ΠΎΠ·Ρ€ΠΎΠ±ΠΊΠΈ Π±Ρ–ΠΎΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Ρ–Π² для захисту рослин Π²Ρ–Π΄ листогризучих ΡˆΠΊΡ–Π΄Π½ΠΈΠΊΡ–Π².Из насСкомых ΠΏΡ€ΠΈΡ€ΠΎΠ΄Π½Ρ‹Ρ… популяций юга Π£ΠΊΡ€Π°ΠΈΠ½Ρ‹ Π²Ρ‹Π΄Π΅Π»Π΅Π½Ρ‹ ΡˆΡ‚Π°ΠΌΠΌΡ‹ Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠΉ Bacillus thuringiensis, эффСктивныС ΠΏΡ€ΠΎΡ‚ΠΈΠ² листогрызущих насСкомых Lepidoptera ΠΈ Diptera. Π˜Π·ΡƒΡ‡Π΅Π½Ρ‹ Ρ„ΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΎ-биохимичСскиС свойства ΠΈ спСктр энтомопатогСнного дСйствия Π΄Π°Π½Π½Ρ‹Ρ… Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠΉ. ΠΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½ΠΎΠ² ΠΏΡ€ΠΎΡ‚ΠΈΠ² Π»ΠΈΡ‡ΠΈΠ½ΠΎΠΊ колорадского ΠΆΡƒΠΊΠ° (Leptinotarsa decemlineata, ΠΎΡ‚Ρ€. Coleoptera), гусСниц капустной совки (Mamesta brassicae, ΠΎΡ‚Ρ€. Lepidoptera) ΠΈ амСриканской Π±Π΅Π»ΠΎΠΉ Π±Π°Π±ΠΎΡ‡ΠΊΠΈ (Hyphantria cunea Dryri, ΠΎΡ‚Ρ€. Lepidoptera) младшСго возраста составляСт 74,7-100 %. Π¨Ρ‚Π°ΠΌΠΌΡ‹ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Ρ‹ Π² ΠΊΠΎΠ»Π»Π΅ΠΊΡ†ΠΈΡŽ Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… энтомопатогСнов Π˜Π½ΡΡ‚ΠΈΡ‚ΡƒΡ‚Π° ΡΠ΅Π»ΡŒΡΠΊΠΎΡ…ΠΎΠ·ΡΠΉΡΡ‚Π²Π΅Π½Π½ΠΎΠΉ ΠΌΠΈΠΊΡ€ΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ УААН ΠΊΠ°ΠΊ пСрспСктивныС для Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π±ΠΈΠΎΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ² для Π·Π°Ρ‰ΠΈΡ‚Ρ‹ растСний ΠΎΡ‚ листогрызущих насСкомых.Strains of Bacillus thuringiensis effecient against leaf-chewing insects of Lepidoptera and Diptera genus have been isolated from insects of nature populations. Their physiological and biochemical properties and the spectrum of entomopathogenic action were studed. The activity of pathogens against the larva of potato beetle (Leptinotarsa decemlinaeta, order Coleoptera), caterpillars of cabbage moth (Mamesta brassicae, order Lepidoptera) and fall webworm moth (Hyphantria cunea Dryri, order Lepidoptera) of small age grade was around 74,7-100 %. These strains were added to bacterial entomopathogene collection of the Institute of agricultural microbiology of UAAS as perspective for elaboration of biopreparations for plants protection against leaf-chewing insects

    ΠžΡ†Ρ–Π½ΡŽΠ²Π°Π½Π½Ρ Π·Π° Π·Π°ΡˆΡƒΠΌΠ»Π΅Π½Π½ΠΈΠΌΠΈ спостСрСТСннями Π½Π΅Π²Ρ–Π΄ΠΎΠΌΠΈΡ… Π΄Π°Π½ΠΈΡ… Π»Ρ–Π½Ρ–ΠΉΠ½ΠΈΡ… Π΅Π»Ρ–ΠΏΡ‚ΠΈΡ‡Π½ΠΈΡ… Ρ€Ρ–Π²Π½ΡΠ½ΡŒ, Ρ‰ΠΎ Π΄ΠΎΠΏΡƒΡΠΊΠ°ΡŽΡ‚ΡŒ Π·ΠΌΡ–ΡˆΠ°Π½Π΅ Π²Π°Ρ€Ρ–Π°Ρ†Ρ–ΠΉΠ½Π΅ Ρ„ΠΎΡ€ΠΌΡƒΠ»ΡŽΠ²Π°Π½Π½Ρ

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    ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½ Π½ΠΎΠ²Ρ‹ΠΉ класс систСм Π²Π°Ρ€ΠΈΠ°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… ΡƒΡ€Π°Π²Π½Π΅Π½ΠΈΠΉ Ρ‡Π΅Ρ€Π΅Π· Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Π²Ρ‹Ρ€Π°ΠΆΠ°ΡŽΡ‚ΡΡ минимаксныС ΠΎΡ†Π΅Π½ΠΊΠΈ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΠΎΠ² ΠΎΡ‚ нСизвСстных ΠΏΡ€Π°Π²Ρ‹Ρ… частСй Π»ΠΈΠ½Π΅ΠΉΠ½Ρ‹Ρ… эллиптичСских ΡƒΡ€Π°Π²Π½Π΅Π½ΠΈΠΉ 2-Π³ΠΎ порядка.ΠžΠ΄Π΅Ρ€ΠΆΠ°Π½ΠΈΠΉ Π½ΠΎΠ²ΠΈΠΉ клас систСм Π²Π°Ρ€Ρ–Π°Ρ†Ρ–ΠΉΠ½ΠΈΡ… Ρ€Ρ–Π²Π½ΡΠ½ΡŒ Ρ‡Π΅Ρ€Π΅Π· Ρ€ΠΎΠ·Π²'язки яких Π²ΠΈΡ€Π°ΠΆΠ°ΡŽΡ‚ΡŒΡΡ мінімаксні ΠΎΡ†Ρ–Π½ΠΊΠΈ Π·Π½Π°Ρ‡Π΅Π½ΡŒ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»Ρ–Π² Π²Ρ–Π΄ Π½Π΅Π²Ρ–Π΄ΠΎΠΌΠΈΡ… ΠΏΡ€Π°Π²ΠΈΡ… частин Π»Ρ–Π½Ρ–ΠΉΠ½ΠΈΡ… Π΅Π»Ρ–ΠΏΡ‚ΠΈΡ‡Π½ΠΈΡ… Ρ€Ρ–Π²Π½ΡΠ½ΡŒ 2-Π³ΠΎ порядку.We obtain a new class of systems of variational equations via whose solutions the minimax estimates of values of functionals from unknown right-hand sides of the second order linear elliptic equations are expressed

    Specific serology for emerging human coronaviruses by protein microarray

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    We present a serological assay for the specific detection of IgM and IgG antibodies against the emerging human coronavirus hCoV-EMC and the SARS-CoV based on protein microarray technology. The assay uses the S1 receptor-binding subunit of the spike protein of hCoV-EMC and SARS-CoV as antigens. The assay has been validated extensively using putative cross-reacting sera of patient cohorts exposed to the four common hCoVs and sera from convalescent patients infected with hCoV-EMC or SARS-CoV
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