17 research outputs found
Kinetic energy and spin-orbit splitting in nuclei near neutron drip line
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·ΡΠ»ΡΡΠ°ΡΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡΠΈ, ΡΠ°ΡΠΌΠ°ΠΊΠΎΠΊΠΈΠ½Π΅ΡΠΈΠΊΠΈ ΠΈ ΡΠ°ΡΠΌΠ°ΠΊΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΎΡΠΈΠ³ΠΈΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ Π°Π½ΡΠΈΡΡΠΎΠΌΠ±ΠΎΡΠΈΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ° ΠΈΠ· Π³ΡΡΠΏΠΏΡ ΠΈΠ½Π³ΠΈΠ±ΠΈΡΠΎΡΠΎΠ² Π³Π»ΠΈΠΊΠΎΠΏΡΠΎΡΠ΅ΠΈΠ½ΠΎΠ²ΡΡ IIb/IIIa-ΡΠ΅ΡΠ΅ΠΏΡΠΎΡΠΎΠ² Ρ Π·Π΄ΠΎΡΠΎΠ²ΡΡ Π΄ΠΎΠ±ΡΠΎΠ²ΠΎΠ»ΡΡΠ΅Π²]
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-β 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
ΠΠ½ΠΎΠ³ΠΎΡΠ΅Π½ΡΡΠΎΠ²ΠΎΠ΅ ΡΠ΅ΡΡΠΎΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΡΡ ΠΏΡΠ΅Π΄ΠΈΠΊΡΠΎΡΠΎΠ² ΠΈ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΠ°ΠΊΠ° ΠΎΠΊΠΎΠ»ΠΎΡΠΈΡΠΎΠ²ΠΈΠ΄Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ
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 (ΠΠ) 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 ΠΠ (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.ΠΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅: Π² ΡΠ²ΡΠ·ΠΈ Ρ ΠΎΡΡΡΡΡΡΠ²ΠΈΠ΅ΠΌ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ½ΡΡ
ΠΌΠ°ΡΠΊΠ΅ΡΠΎΠ² ΡΠ°ΠΊΠ° ΠΎΠΊΠΎΠ»ΠΎΡΠΈΡΠΎΠ²ΠΈΠ΄Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ (ΠΠ©Π) ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° Π°Π»Π³ΠΎΡΠΈΡΠΌΠΎΠ² Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ Π³ΡΡΠΏΠΏ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠΈΡΠΊΠ° ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»ΡΠ΅ΡΡΡ Π°ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΉ Π·Π°Π΄Π°ΡΠ΅ΠΉ.
Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ: ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΡΠ΅ ΠΏΡΠ΅Π΄ΠΈΠΊΡΠΎΡΡ Π·Π»ΠΎΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ
Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠΉ ΠΠ©Π ΠΈ Π²ΡΠ΄Π΅Π»ΠΈΡΡ ΡΠ°ΠΊΡΠΎΡΡ Π½Π΅Π±Π»Π°Π³ΠΎΠΏΡΠΈΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ³Π½ΠΎΠ·Π°.
ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ: ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΌΠ½ΠΎΠ³ΠΎΡΠ΅Π½ΡΡΠΎΠ²ΠΎΠ΅ ΡΠ΅ΡΡΠΎΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ Π²ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ΠΌ 242 ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Ρ ΠΠΠΠ’, ΡΠ°Π·Π΄Π΅Π»Π΅Π½Π½ΡΡ
Π½Π° Π³ΡΡΠΏΠΏΡ ΠΊΠ°ΡΡΠΈΠ½ΠΎΠΌ (n=50), Π°ΡΠΈΠΏΠΈΡΠ΅ΡΠΊΠΈΡ
Π°Π΄Π΅Π½ΠΎΠΌ (ΠΠ) (n=30) ΠΈ Π°Π΄Π΅Π½ΠΎΠΌ (n=162) ΠΠ©Π. Π‘Π±ΠΎΡ ΠΈ Π°Π½Π°Π»ΠΈΠ· Π΄Π°Π½Π½ΡΡ
ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΡΡ Ρ 2017 ΠΏΠΎ 2020 Π³Π³. ΠΠ΅ΡΠ²ΠΈΡΠ½Π°Ρ ΠΊΠΎΠ½Π΅ΡΠ½Π°Ρ ΡΠΎΡΠΊΠ° ΠΎΡΠ΅Π½ΠΊΠ° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ Π½Π°Π»ΠΈΡΠΈΡ ΡΠ°ΠΊΠ° ΠΠ©Π Π² ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΌ Π³ΠΈΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΌ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π΅ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΡΠ΅Π΄ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΡΡ
ΠΈ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
Π΄Π°Π½Π½ΡΡ
. ΠΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎ Π²ΡΠ΄Π΅Π»Π΅Π½Ρ ΠΏΠΎΠ΄Π³ΡΡΠΏΠΏΡ Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ ΡΠ΅ΡΠΈΠ΄ΠΈΠ²ΠΎΠΌ (n=17) ΠΈ Ρ ΡΠ΅ΠΌΠΈΡΡΠΈΠ΅ΠΉ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ (n=33). ΠΠ±ΡΠΈΠΉ ΠΊΠ°Π»ΡΡΠΈΠΉ, Π°Π»ΡΠ±ΡΠΌΠΈΠ½, ΡΠ΅Π»ΠΎΡΠ½Π°Ρ ΡΠΎΡΡΠ°ΡΠ°Π·Π° (Π©Π€), ΠΈΠΎΠ½ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΠΉ ΠΊΠ°Π»ΡΡΠΈΠΉ (Π‘Π°++) Π² ΠΊΡΠΎΠ²ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ»ΠΈ Π½Π° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΌ Π±ΠΈΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΌ Π°Π½Π°Π»ΠΈΠ·Π°ΡΠΎΡΠ΅. ΠΠ½Π°Π»ΠΈΠ· ΠΊΡΠΎΠ²ΠΈ Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ΠΌ ΠΈΠ½ΡΠ°ΠΊΡΠ½ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ°ΡΠ³ΠΎΡΠΌΠΎΠ½Π° (ΠΈΠΠ’Π) Π²ΡΠΏΠΎΠ»Π½Π΅Π½ Π½Π° ΡΠ»Π΅ΠΊΡΡΠΎΡ
Π΅ΠΌΠΈΠ»ΡΠΌΠΈΠ½Π΅ΡΡΠ΅Π½ΡΠ½ΠΎΠΌ Π°Π½Π°Π»ΠΈΠ·Π°ΡΠΎΡΠ΅. ΠΠ±ΡΠ΅ΠΌ ΠΠ©Π ΠΏΠΎ Π΄Π°Π½Π½ΡΠΌ ΡΠ»ΡΡΡΠ°Π·Π²ΡΠΊΠΎΠ²ΠΎΠ³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ (Π£ΠΠ) ΡΠ°ΡΡΡΠΈΡΡΠ²Π°Π»ΡΡ ΠΏΠΎ ΡΠΎΡΠΌΡΠ»Π΅ ΡΠ»Π»ΠΈΠΏΡΠ°: V(ΡΠΌ3) = (A B C) 0,49. Π‘ΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΏΠ°ΠΊΠ΅ΡΠΎΠ² ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌ STATISTICA 13 ΠΈ SPSS. ΠΠ»Ρ ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ»Π°ΡΡ ΠΏΠΎΠΏΡΠ°Π²ΠΊΠ° ΠΠΎΠ½ΡΠ΅ΡΡΠΎΠ½ΠΈ.
Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ: Π² Π³ΡΡΠΏΠΏΡ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠΈΡΠΊΠ° Π½Π°Π»ΠΈΡΠΈΡ ΡΠ°ΠΊΠ° ΠΠ©Π Π½Π° ΠΏΡΠ΅Π΄ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΌ ΡΡΠ°ΠΏΠ΅ ΡΠ»Π΅Π΄ΡΠ΅Ρ ΠΎΡΠ½ΠΎΡΠΈΡΡ Π»ΠΈΡ Ρ ΠΠ’Π Π±ΠΎΠ»Π΅Π΅ 443,55 ΠΏΠ³/ΠΌΠ», Π‘Π°++ Π±ΠΎΠ»Π΅Π΅ 1,5 ΠΌΠΌΠΎΠ»Ρ/Π»; Π°Π»ΡΠ±ΡΠΌΠΈΠ½-ΡΠΊΠΎΡΡΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ ΠΊΠ°Π»ΡΡΠΈΠ΅ΠΌ Π±ΠΎΠ»Π΅Π΅ 3,2 ΠΌΠΌΠΎΠ»Ρ/Π», Π©Π€ Π±ΠΎΠ»Π΅Π΅ 176 Π΅Π΄/Π», ΡΠ°Π·ΠΌΠ΅ΡΠΎΠΌ Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ Π±ΠΎΠ»Π΅Π΅ 22,5 ΠΌΠΌ ΠΈ ΠΎΠ±ΡΠ΅ΠΌΠΎΠΌ Π±ΠΎΠ»Π΅Π΅ 2,6 ΡΠΌ3 (Ρ 0,001). ΠΠΎ Π΄Π°Π½Π½ΡΠΌ Π£ΠΠ Π΄Π»Ρ ΠΊΠ°ΡΡΠΈΠ½ΠΎΠΌ ΠΈ ΠΠ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ Π³ΡΡΠΏΠΏΠΎΠΉ Π°Π΄Π΅Π½ΠΎΠΌ ΡΠ°ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½Π° Π½Π΅ΠΎΠ΄Π½ΠΎΡΠΎΠ΄Π½Π°Ρ ΡΡΡΡΠΊΡΡΡΠ° (p = 0,004 ΠΈ Ρ = 0,011 ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ) ΠΈ Π½Π΅ΡΠ΅ΡΠΊΠΈΠΉ ΠΊΠΎΠ½ΡΡΡ (Ρ = 0,001 ΠΈ Ρ = 0,011 ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ). ΠΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΌΠΈΡΠΎΠ·Ρ - ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈ Π½Π΅Π±Π»Π°Π³ΠΎΠΏΡΠΈΡΡΠ½ΡΠΉ ΡΠ°ΠΊΡΠΎΡ Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΡΠ΅ΡΠΈΠ΄ΠΈΠ²Π° ΡΠ°ΠΊΠ° ΠΠ©Π (Ρ=0,007).
ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅: Π΄Π»Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Ρ ΠΊΠ°ΡΡΠΈΠ½ΠΎΠΌΠΎΠΉ ΠΈ ΠΠ ΠΠ©Π Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½ΠΎ Π±ΠΎΠ»Π΅Π΅ Π°Π³ΡΠ΅ΡΡΠΈΠ²Π½ΠΎΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ ΠΠΠΠ’ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ Π³ΡΡΠΏΠΏΠΎΠΉ Π°Π΄Π΅Π½ΠΎΠΌ