17 research outputs found

    Kinetic energy and spin-orbit splitting in nuclei near neutron drip line

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    Two important ingredients of nuclear shell-structure, kinetic energy and spin-orbit splitting, are studied as a function of orbital angular momenta \ell and binding energies, when binding energies of neutrons decrease towards zero. If we use the standard parameters of the Woods-Saxon potential in \beta stable nuclei and approach the limit of zero binding energy from 10 MeV, the spin-orbit splitting for n=1 orbitals decreases considerably for \ell=1, while for \ell > 2 little decreasing is observed in the limit. In contrast, the kinetic energy decreases considerably for \ell \simleq 3. The smaller the \ell values of orbitals, the larger the decreasing rate of both kinetic energy and spin-orbit splitting. The dependence of the above bservation on the diffuseness of potentials is studied.Comment: 12 pages, 3 figures, submitted to Nucl. Phy

    Safety, pharmacokinetics and pharmacodynamics of an original glycoprotein IIb/IIIa inhibitor in healthy volunteers: results of the clinical trial [Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ клиничСского исслСдования бСзопасности, Ρ„Π°Ρ€ΠΌΠ°ΠΊΠΎΠΊΠΈΠ½Π΅Ρ‚ΠΈΠΊΠΈ ΠΈ Ρ„Π°Ρ€ΠΌΠ°ΠΊΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΎΡ€ΠΈΠ³ΠΈΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π°Π½Ρ‚ΠΈΡ‚Ρ€ΠΎΠΌΠ±ΠΎΡ†ΠΈΡ‚Π°Ρ€Π½ΠΎΠ³ΠΎ ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π° ΠΈΠ· Π³Ρ€ΡƒΠΏΠΏΡ‹ ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€ΠΎΠ² Π³Π»ΠΈΠΊΠΎΠΏΡ€ΠΎΡ‚Π΅ΠΈΠ½ΠΎΠ²Ρ‹Ρ… IIb/IIIa-Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€ΠΎΠ² Ρƒ Π·Π΄ΠΎΡ€ΠΎΠ²Ρ‹Ρ… Π΄ΠΎΠ±Ρ€ΠΎΠ²ΠΎΠ»ΡŒΡ†Π΅Π²]

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    Aim. To study the tolerability, safety, pharmacokinetics (PK) and pharmacodynamics of single intravenous infusions of Angipur in healthy male volunteers. Material and methods. The Phase I trial included 20 healthy male volunteers (mean age, 30,8Β±7,7 years; mean body weight, 77,4Β±12,1 kg). Angipur (0,02% concentrate for solution for infusion) was administered to every subject in single doses 0,015, 0,05, 0,09 mg/kg for 3 consecutive days. Volunteers were divided in 6 groups (1, 1, 3, 5, 5, 5); every following group was recruited only after the previous one finished the study. The following were assessed: rate and severity of adverse events (AEs), key PK parameters of Angipur and its antiplatelet activity by impedance aggregometry. Results. No moderate or severe AEs, as well as no serious AEs were reported according to obtained data of clinical and laboratory monitoring of healthy subjects. Totally 6 mild AEs were registered in 4 subjects. Four AEs (mild hematological deviations and episode of nose bleed) were classified as possibly related to study drug and 1 AE (positive fecal occult blood test) β€” probably related. Key PK parameters of Angipur in single intravenous doses 0,015, 0,05 ΠΈ 0,09 mg/kg were determined as follows: Cmax β€” 12,44Β±4,689, 46,10Β±14,295, 92,48Β±33,896 ng/ml; Vd β€” 304,01Β±55,300, 299,67Β±64,244, 252,96Β±47,790 l; T1/2 β€” 6,72Β±1,290, 6,84Β±2,341, 6,06Β±2,287 h; Cl β€” 32,19Β±6,919, 32,29Β±8,357, 31,55Β±10,113 l/h, respectively. Dose proportionality (linear PK) for parameters Cmax, AUC0-t and AUC0-∞ was established. Dose-dependent reduction of ADP-induced platelet aggregation degree and area under curve was revealed at period of 15 min to 2-4 h after Angipur infusion in doses 0,05 and 0,09 mg/kg. Conclusion. Results of phase I clinical trial demonstrated good tolerability of single intravenous infusions of Angipur (0,015, 0,05 ΠΈ 0,09 mg/kg) in healthy subjects. We determined key PK parameters and indicated dose-dependent antiplatelet activity of Angipur. Β© 2022 Vserossiiskoe Obshchestvo Kardiologov. All rights reserved

    ΠœΠ½ΠΎΠ³ΠΎΡ†Π΅Π½Ρ‚Ρ€ΠΎΠ²ΠΎΠ΅ рСтроспСктивноС исслСдованиС ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½Ρ‹Ρ… ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΎΡ€ΠΎΠ² ΠΈ морфологичСских характСристик Ρ€Π°ΠΊΠ° ΠΎΠΊΠΎΠ»ΠΎΡ‰ΠΈΡ‚ΠΎΠ²ΠΈΠ΄Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹

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    Background: there are no specific markers of the parathyroid carcinoma (PC) therefore, the development of algorithms for identifying high-risk patients is an urgent task. Aims: to determine the clinical and laboratory predictors of PC and to identify the factors of a poor prognosis. Materials and methods: A multicenter retrospective study included 242 patients with primary hyperparathyroidism (PHPT) who were divided into groups: 162 with adenomas, 30 with Π°typical adenomas (АА) and 50 patients with PC. Data collection and analysis was carried out from 2017 to 2020. The primary goal assessment of the possibility of PΠ‘ using preoperative laboratory and instrumental data. The group of PC was divided into subgroups: the patients in recurrences (n=17) and remission (n=33). The level of the total calcium, albumin, alkaline phosphatase (ALP), ionized calcium (Ca ++) in the blood were determined on the automatic biochemical analyzer; the level of parathyroid hormone (PTH) by electrochemoluminescent analyzer. The size of the PG determined by the ellipse formula: V (cm3) = (A B C) 0.49. Statistical analysis was performed with Statistica 13 and SPSS software packages. For multiple comparisons, the Bonferroni correction was applied. Results: the group of patients with increased risk of PC include persons with increased level of PTH 443 pg/ml, Ca++ 1.5 mmol/l, total calcium 3.2 mmol/l, ALP 176 IU/L, V of tumors 2.6 cm3, largest size 22.5 mm (p 0,001). Heterogeneous structure is more typical to PC compared to the АА (p = 0,004 and Ρ€ = 0,011), the same applies to indefinite contour (Ρ€ = 0,001 ΠΈ Ρ€ = 0,011). Pathological mitosis is a prognostically unfavorable factor of recurrence of PC (Ρ€=0,007). Conclusions: the patients with PC and AA are characterized with more aggressive course of PHPT compared to the group of adenomas.ОбоснованиС: Π² связи с отсутствиСм спСцифичных ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² Ρ€Π°ΠΊΠ° ΠΎΠΊΠΎΠ»ΠΎΡ‰ΠΈΡ‚ΠΎΠ²ΠΈΠ΄Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ (ΠžΠ©Π–) Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² выдСлСния Π³Ρ€ΡƒΠΏΠΏ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½ΠΎΠ³ΠΎ риска прСдставляСтся Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠΉ Π·Π°Π΄Π°Ρ‡Π΅ΠΉ. ЦСль исслСдования: ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΡ‚ΡŒ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½Ρ‹Π΅ ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΎΡ€Ρ‹ злокачСствСнных Π½ΠΎΠ²ΠΎΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠΉ ΠžΠ©Π– ΠΈ Π²Ρ‹Π΄Π΅Π»ΠΈΡ‚ΡŒ Ρ„Π°ΠΊΡ‚ΠΎΡ€Ρ‹ нСблагоприятного ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·Π°. ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹: ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΌΠ½ΠΎΠ³ΠΎΡ†Π΅Π½Ρ‚Ρ€ΠΎΠ²ΠΎΠ΅ рСтроспСктивноС исслСдованиС с Π²ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ΠΌ 242 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² с ΠŸΠ“ΠŸΠ’, Ρ€Π°Π·Π΄Π΅Π»Π΅Π½Π½Ρ‹Ρ… Π½Π° Π³Ρ€ΡƒΠΏΠΏΡ‹ ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌ (n=50), атипичСских Π°Π΄Π΅Π½ΠΎΠΌ (АА) (n=30) ΠΈ Π°Π΄Π΅Π½ΠΎΠΌ (n=162) ΠžΠ©Π–. Π‘Π±ΠΎΡ€ ΠΈ Π°Π½Π°Π»ΠΈΠ· Π΄Π°Π½Π½Ρ‹Ρ… проводился с 2017 ΠΏΠΎ 2020 Π³Π³. ΠŸΠ΅Ρ€Π²ΠΈΡ‡Π½Π°Ρ конСчная Ρ‚ΠΎΡ‡ΠΊΠ° ΠΎΡ†Π΅Π½ΠΊΠ° возмоТности наличия Ρ€Π°ΠΊΠ° ΠžΠ©Π– Π² послСопСрационном гистологичСском ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π΅ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΏΡ€Π΅Π΄ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½Ρ‹Ρ… ΠΈ ΠΈΠ½ΡΡ‚Ρ€ΡƒΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… Π΄Π°Π½Π½Ρ‹Ρ…. Π”ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ Π²Ρ‹Π΄Π΅Π»Π΅Π½Ρ‹ ΠΏΠΎΠ΄Π³Ρ€ΡƒΠΏΠΏΡ‹ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²ΠΎΠΌ (n=17) ΠΈ с рСмиссиСй заболСвания (n=33). ΠžΠ±Ρ‰ΠΈΠΉ ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ, Π°Π»ΡŒΠ±ΡƒΠΌΠΈΠ½, щСлочная фосфатаза (Π©Π€), ΠΈΠΎΠ½ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΉ ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ (Π‘Π°++) Π² ΠΊΡ€ΠΎΠ²ΠΈ опрСдСляли Π½Π° автоматичСском биохимичСском Π°Π½Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€Π΅. Анализ ΠΊΡ€ΠΎΠ²ΠΈ с ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ΠΌ ΠΈΠ½Ρ‚Π°ΠΊΡ‚Π½ΠΎΠ³ΠΎ ΠΏΠ°Ρ€Π°Ρ‚Π³ΠΎΡ€ΠΌΠΎΠ½Π° (ΠΈΠŸΠ’Π“) Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ Π½Π° ΡΠ»Π΅ΠΊΡ‚Ρ€ΠΎΡ…Π΅ΠΌΠΈΠ»ΡŽΠΌΠΈΠ½Π΅ΡΡ†Π΅Π½Ρ‚Π½ΠΎΠΌ Π°Π½Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€Π΅. ОбъСм ΠžΠ©Π– ΠΏΠΎ Π΄Π°Π½Π½Ρ‹ΠΌ ΡƒΠ»ΡŒΡ‚Ρ€Π°Π·Π²ΡƒΠΊΠΎΠ²ΠΎΠ³ΠΎ исслСдования (Π£Π—Π˜) рассчитывался ΠΏΠΎ Ρ„ΠΎΡ€ΠΌΡƒΠ»Π΅ эллипса: V(см3) = (A B C) 0,49. БтатистичСский Π°Π½Π°Π»ΠΈΠ· ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ с использованиСм ΠΏΠ°ΠΊΠ΅Ρ‚ΠΎΠ² ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌ STATISTICA 13 ΠΈ SPSS. Для мноТСствСнных сравнСний ΠΏΡ€ΠΈΠΌΠ΅Π½ΡΠ»Π°ΡΡŒ ΠΏΠΎΠΏΡ€Π°Π²ΠΊΠ° Π‘ΠΎΠ½Ρ„Π΅Ρ€Ρ€ΠΎΠ½ΠΈ. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹: Π² Π³Ρ€ΡƒΠΏΠΏΡƒ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½ΠΎΠ³ΠΎ риска наличия Ρ€Π°ΠΊΠ° ΠžΠ©Π– Π½Π° ΠΏΡ€Π΅Π΄ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΌ этапС слСдуСт ΠΎΡ‚Π½ΠΎΡΠΈΡ‚ΡŒ Π»ΠΈΡ† с ΠŸΠ’Π“ Π±ΠΎΠ»Π΅Π΅ 443,55 ΠΏΠ³/ΠΌΠ», Π‘Π°++ Π±ΠΎΠ»Π΅Π΅ 1,5 ммоль/Π»; Π°Π»ΡŒΠ±ΡƒΠΌΠΈΠ½-скоррСктированным ΠΊΠ°Π»ΡŒΡ†ΠΈΠ΅ΠΌ Π±ΠΎΠ»Π΅Π΅ 3,2 ммоль/Π», Π©Π€ Π±ΠΎΠ»Π΅Π΅ 176 Π΅Π΄/Π», Ρ€Π°Π·ΠΌΠ΅Ρ€ΠΎΠΌ новообразования Π±ΠΎΠ»Π΅Π΅ 22,5 ΠΌΠΌ ΠΈ объСмом Π±ΠΎΠ»Π΅Π΅ 2,6 см3 (Ρ€ 0,001). По Π΄Π°Π½Π½Ρ‹ΠΌ Π£Π—Π˜ для ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌ ΠΈ АА ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с Π³Ρ€ΡƒΠΏΠΏΠΎΠΉ Π°Π΄Π΅Π½ΠΎΠΌ Ρ‡Π°Ρ‰Π΅ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½Π° нСоднородная структура (p = 0,004 ΠΈ Ρ€ = 0,011 соотвСтствСнно) ΠΈ Π½Π΅Ρ‡Π΅Ρ‚ΠΊΠΈΠΉ ΠΊΠΎΠ½Ρ‚ΡƒΡ€ (Ρ€ = 0,001 ΠΈ Ρ€ = 0,011 соотвСтствСнно). ΠŸΠ°Ρ‚ΠΎΠ»ΠΎΠ³ΠΈΡ‡Π΅ΡΠΊΠΈΠ΅ ΠΌΠΈΡ‚ΠΎΠ·Ρ‹ - прогностичСски нСблагоприятный Ρ„Π°ΠΊΡ‚ΠΎΡ€ Π² ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²Π° Ρ€Π°ΠΊΠ° ΠžΠ©Π– (Ρ€=0,007). Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅: для ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² с ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌΠΎΠΉ ΠΈ АА ΠžΠ©Π– Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½ΠΎ Π±ΠΎΠ»Π΅Π΅ агрСссивноС Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ ΠŸΠ“ΠŸΠ’ ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с Π³Ρ€ΡƒΠΏΠΏΠΎΠΉ Π°Π΄Π΅Π½ΠΎΠΌ
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