A Copper-Nitroxide Adduct Exhibiting Separate Single Crystal-to-Single Crystal Polymerization-Depolymerization and Spin Crossover Transitions

© 2016 American Chemical Society.A complex cascade of solid-state processes initiated by variation of temperature was found for the heterospin complex [Cu(hfac)2LMe/Et] formed in the reaction of copper(II) hexafluoroacetylacetonate [Cu(hfac)2] with stable nitronyl nitroxide 2-(1-methyl-3-ethyl-1H-pyrazol-4-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl (LMe/Et). The cooling of the compound below 260 K initiated a solid-state chemical reaction, which led to a depolymerization of chains and formation of a pair heterospin complex [Cu(hfac)2LMe/Et2][[Cu(hfac)2]3LMe/Et2]. Further decrease in temperature below 144 K led to a spin transition accompanied by a drastic decrease in the effective magnetic moment from 2.52 to 2.24 μB. When the compound was heated, the order of effects was reversed: at first, the magnetic moment abruptly increased, and then the molecular fragments of the pair cluster united into polymer chains. Two hysteresis loops correspond to this cascade of temperature-induced structural transformations on the experimental dependence μeff(T): one at high (T ' = 283 K and T " = 260 K) and the other at low (T= 161 K, T = 144 K) temperature. The spin transitions were also recorded for the [[Cu(hfac)2]3LBu/Et2] and [[Cu(hfac)2]5LBu/Et4] molecular complexes, which are models of the trinuclear fragment of the {[Cu(hfac)2]3LMe/Et2} pair cluster

Результаты открытого многоцентрового неинтервенционного исследования клинической эффективности и переносимости эторикоксиба при остеоартрите и неспецифической боли в спине с дополнительной оценкой влияния препарата на «центральные» проявления боли

The formation of chronic musculoskeletal pain (MSP) is a multifactorial process, in its pathogenesis mechanism of central sensitization (CS) plays an important role.Objective: to evaluate the effectiveness of etoricoxib at a dose of 60 mg per day in diseases accompanied by moderate/severe chronic MPS, with an additional analysis of the effect of this drug on the manifestations of CS.Patients and methods. An open observational study, 790 patients (71.6% women, mean age 54.5±13.0 years) with osteoarthritis and chronic nonspecific back pain received etoricoxib 60 mg/day for 2 weeks. The dynamics of pain, dysfunction, fatigue, sleep disturbances, general health assessment (GHA) on a numerical rating scale (NRS 0–10), as well as signs of CS according to part A of the CSI questionnaire were assessed.Results and discussion. After 2 weeks, the intensity of pain during movement, at rest and at night decreased on average by 58.8±24.1, 69.7±32.6 and 70.1±32.8% respectively; functional insufficiency by 58.2±22.5%, fatigue by 52.2±25.8%, GHA by 50.0±22.6%, sleep improvement by 54.3±25.8% was observed (p<0.001 for all parameters). There was a decrease in the CSI value by an average of 33.1±14.5% (p<0.001), as well as a decrease in the number of patients with highly probable CS (CSI ≥40) from 35.3 to 10.3% (p<0.001). No serious drug-related complications were recorded. The overall frequency of adverse reactions was 5.9%, with dyspepsia and hypertension being the most common.Conclusion. Etoricoxib is an effective and relatively safe treatment for chronic MSP. It reduces the severity of CS, one of the central mechanisms of the pathogenesis of chronic MSP.Формирование хронической скелетно-мышечной боли (СМБ) – многофакторный процесс, в патогенезе которого существенную роль играет механизм центральной сенситизации (ЦС).Цель исследования – оценка эффективности эторикоксиба в дозе 60 мг/сут при заболеваниях, сопровождающихся умеренно выраженной/выраженной хронической СМБ, с дополнительным анализом влияния этого препарата на проявления ЦС.Пациенты и методы. Было проведено открытое наблюдательное исследование, в котором 790 пациентов (71,6% женщин, средний возраст 54,5±13,0 лет) с остеоартритом и хронической неспецифической болью в спине в течение 2 нед получали эторикоксиб по 60 мг/сут. Оценивалась динамика боли, нарушения функции, усталости, расстройств сна, общей оценки состояния здоровья (ООСЗ) по числовой рейтинговой шкале (ЧРШ, 0–10), а также признаков ЦС по части А опросника CSI.Результаты и обсуждение. Через 2 нед интенсивность боли при движении, в покое и ночью снизилась в среднем соответственно на 58,8±24,1; 69,7±32,6 и 70,1±32,8%, функциональная недостаточность – на 58,2±22,5%, усталость – на 52,2±25,8%, ООСЗ – на 50,0±22,6%, наблюдалось улучшение сна на 54,3±25,8% (р<0,001 для всех параметров). Было отмечено снижение значения CSI в среднем на 33,1±14,5% (р<0,001), а также числа пациентов с высоковероятной ЦС (CSI≥40) с 35,3 до 10,3% (р<0,001). Не было зафиксировано серьезных лекарственных осложнений. Общая частота нежелательных реакций составила 5,9%, наиболее часто встречались диспепсия и артериальная гипертензия.Заключение. Эторикоксиб является эффективным и относительно безопасным средством для контроля хронической СМБ. Он снижает выраженность ЦС – одного из центральных механизмов патогенеза хронической СМБ

The use of Kuraderm drug in the treatment of basal cell carcinoma of the head and neck

Basal cell carcinoma is one of the most common malignancies. Despite a wide range of treatment options and relatively good prognosis of the disease, there may be restrictions on the use of standard methods of treatment because of elderly patients, their physical condition and characteristics of the tumor localization. We provide clinical examples of successful treatment of basal cell carcinoma of the head and neck with Kuraderm BEC5. This is a drug with anti-tumor activity for topical use made on the basis of glycoalkaloids of plants of nightshade family

GESTATIONAL DIABETUS MELLITUS AT A POPULATION LEVEL. MEDICINAL THERAPY OF THREATENING MISCARRIAGE AND CARBOHYDRATE METABOLISM (literature survey)

This article presents a literature survey on the pathogenesis of gestational diabetes mellitus and abnormal carbohydrate metabolism during pregnancy. Also, the effects of some medicinal drugs which may provoke hyperglycemia during pregnancy leading in turn to different perinatal and maternal complications are discussed

Synthesis, structure, and magnetic properties of lanthanide ferrocenoylacetonates with nitrate and 2,2′-bipyridine ligands

<p>Ferrocenoylacetonate complexes of several lanthanides, [Ln(fca)₂(NO₃)(bpy)]·<i>n</i>MeC₆H₅ (Ln = Sm (<b>1</b>), Dy (<b>3</b>), Er (<b>4</b>), Yb (<b>5</b>), <i>n</i> = 1; Eu (<b>2</b>), <i>n</i> = 0.5; fca = FcC(O)CHC(O)Me; bpy = 2,2′-bipyridine), were synthesized and characterized by X-ray single-crystal analysis. Complexes <b>1</b>, <b>4,</b> and <b>5</b> are isostructural; <b>2</b> has a similar molecular structure with <i>cis</i>-disposition of fca ligands. The molecular structure of <b>3</b> is different, with <i>trans</i>-disposition of the fca ligands. Crystal lattices of the complexes are stabilized by <i>π</i>-stacking interactions. The Ln³⁺ ions in the complexes are eight-coordinate. According to mass spectroscopic data, the complexes are unstable in the gas phase. Magnetic properties of <b>2</b> and <b>4</b> were studied in a DC field; for <b>4</b>, AC studies were also carried out. The values of spin-orbital parameters obtained using two estimation methods for <b>2</b> are in satisfactory agreement. Slow relaxation of the magnetization was found for the Er complex.</p

Modern approaches to the treatment of postpartum purulent-septic diseases

The cohort prospective comparative study showed improvement of the management of patients with various forms of purulentseptic diseases (PSD). The study included 276 women with PSD admitted to the gynecological hospital from January 1, 2014 to December 31, 2016. The patients were divided into two cohorts depending on the clinical course, management, and outcomes, which corresponded to the clinical forms of PSD: uncomplicated and complicated. The parameters that were evaluated in patients in both groups included complaints, pregnancy course and childbirth, duration of manifestations of the disease, the clinical picture, laboratory parameters. The study resulted in the development of an algorithm for management of patients with PSD including lavage of the site of infection, adequate antibiotic therapy depending on the type of pathogen, infusion and anticoagulant therapy, and treatment of vaginitis. The developed algorithm for management of patients with various forms of postpartum PSD allowed all 276 (100%) participants to preserve reproductive function and avoid early postoperative complications

Prophylaxis of рurulent-septic diseases of postpartum period for high-risk puerperas

Background. Postpartum purulent-septic diseases are one of the topical issues of modern obstetrics due to high prevalence and absence of downward trend toward reduction in the disease incidence.Objective: improve the management of high risk puerperas to prevent the development of purulent-septic complications in the postpartum period.Materials and methods. The cohort prospective comparative study included 78 puerperas, who experienced spontaneous labour complicated by injuries to birth canals. The patients were divided into two groups according to the risk of developing purulentseptic complications and the management of patients. Group 1, control group, (n = 20) included the puerperas, who did not show any signs of inflammatory diseases of the genital tract during pregnancy. Group 2 included patients, who were diagnosed with various forms of vaginal dysbiosis based on the results of bacterioscopic and bacteriological examination of the genital tract. The group was further divided into two subgroups depending on the type of treatment. Subgroup 1 of Group 2 (n = 28) only received standard hygiene care, and subgroup 2 (n = 30) received standard hygiene procedures combined with vaginal irrigation using benzidamine hydrochloride solution (Tantum Rosa) for 3 days in the obstetric hospital.Results. The study resulted in improving postpartum care of high-risk puerperas to prevent purulent-septic complications. Discussion The test results showed that the use of benzidamine hydrochloride (Tantum Rosa) in the postpartum period prevents the purulent-septic complications of puerperium, such as inflammation and disruption of perineal muscle sutures and endometritis, as well as relieves pain and discomfort, and improves the puerperas’ quality of life.Conclusion: Based on the study results, we recommend the use of this drug in the early postpartum period to prevent purulentseptic complications in the high-risk groups