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Your search keyword '"Ratajczak, M."' showing total 616 results
Start Over Author "Ratajczak, M." Publication Type Academic Journals
616 results on '"Ratajczak, M."'

1. Effects of 12-Week Combined Strength and Endurance Circuit Training Program on Insulin Sensitivity and Retinol-Binding Protein 4 in Women with Insulin-Resistance and Overweight or Mild Obesity: A Randomized Controlled Trial

Author

Ratajczak M, Krzywicka M, Szulińska M, Musiałowska D, Kusy K, and Karolkiewicz J

Subjects
insulin resistance, exercise program, retinol-binding protein 4, insulin-like growth factors-1, thyroid-stimulating hormone, Specialties of internal medicine, RC581-951
Abstract

Marzena Ratajczak,1 Monika Krzywicka,2 Monika Szuli&nacute;ska,3 Dominika Musia&lstrok;owska,4 Krzysztof Kusy,5 Joanna Karolkiewicz6 1Department of Medical Biology, Poznan University of Physical Education, Poznan, 61-871, Poland; 2Department of Cardiological and Rheumatological Rehabilitation, Poznan University of Physical Education, Poznan, 61-871, Poland; 3Department of Treatment of Obesity, Metabolic Disorders and Clinical Dietetics, Poznan University of Medical Sciences, Poznan, 61-701, Poland; 4Insulin Resistance Foundation – Healthy Diet and Healthy Life, Poznan, 61-379, Poland; 5Department of Athletics Strength and Conditioning, Poznan University of Physical Education, Poznan, 61-871, Poland; 6Department of Food and Nutrition, Poznan University of Physical Education, Poznan, 61-871, PolandCorrespondence: Marzena Ratajczak, Department of Medical Biology, Poznan University of Physical Education, Poznan, 61-871, Poland, Email mratajczak@awf.poznan.plBackground: Circuit training is an exercise mode, that may include both endurance and resistance components. There are premises that a combination of these two modalities brings additional benefits, particularly in improving insulin sensitivity. The retinol-binding protein 4 (RBP4) may inhibit signaling from insulin metabolic pathways in skeletal muscles, thus developing insulin resistance. This study aimed to evaluate whether moderate intensity circuit training combining strength and endurance exercise induces changes in tissue insulin sensitivity, carbohydrate and lipid metabolism, and serum RBP4 levels in insulin-resistant women.Methods: In this clinical controlled trial women diagnosed with insulin-resistance were randomly divided into two groups. The training group (T) performed circuit training combining strength (50%-80%1RM) and endurance (50%-75%HRR) exercise on five weight and two cardio machines, for 33 minutes, three times per week, for 3 months. Women from the control non-training group (NT) did not change their previous physical activity. At the beginning of the study and after the intervention period, a one-repetition maximum, body mass, and composition, resting heart rate (HR), blood pressure, glucose, insulin, blood lipids, thyroid-stimulating hormone (TSH), insulin-like growth factor-1 (IGF-1), RBP4, and insulin resistance (HOMA-IR) were measured. The results of 27 patients were analyzed using a two-way repeated measures ANOVA.Results: Significant differences in the pattern of change over time between the groups for resting HR (p < 0.010) and total lean mass (p < 0.039) were found. No differences in HOMA-IR, and RBP4 were observed post-study compared to pre-study in the T group. A significant correlation between RBP4 and TSH concentration was found.Conclusion: Twelve-week circuit training combining strength and endurance exercise has minor effects on HOMA-IR, glucose and lipid metabolism, IGF-1, TSH, and RBP4. Although moderate-intensity circuit training is considered safe, its effectiveness in patients with overweight and mild obesity may be insufficient to reduce insulin resistance.Trial Registration: ClinicalTrials.gov: NCT04528693, registered August 23, 2020.Keywords: insulin resistance, exercise program, retinol-binding protein 4, insulin-like growth factors-1, thyroid-stimulating hormone

Published
2024

4. Efficacy and Safety of Masitinib in Progressive Forms of Multiple Sclerosis: A Randomized, Phase 3, Clinical Trial

Author

Vermersch, Patrick, Brieva-Ruiz, Luis, Fox, Robert J., Paul, Friedemann, Ramio-Torrenta, Lluis, Schwab, Matthias, Moussy, Alain, Mansfield, Colin, Hermine, Olivier, Maciejowski, Maciej, Hecham, N., Deri, N. Haydeé, Djelilovic-Vranic, J., Milanov, I., Shotekov, P., Blevins, G., Girard, J., Lapierre, Y., Camu, W., Castelnovo, G., Clavelou, P., Hautecoeur, P., Marziniak, M., Mayer, C., Oschmann, P., Reifschneider, G., Schoell, I., Tackenberg, B., Bergh, F. Then, Fakas, N., Grigoriadis, N., Kalochristianakis, D., Mitsikostas, D., Orologas, A., Tavernarakis, A., Thomaidis, T., Kovacs, K., Matyas, K., Piros, P., Satori, M., Anand, K., Shifrin, A., Banaszkiewicz, K., Bonek, R., Chahwan, M., Czernichowska - Kotiuszko, M., Darda-Ledzion, L., Debrowska - Wójcik, J., Dziki, M., Krzystanek, E., Kulka, M., Lisewski, P., Ratajczak, M., Szczudlik, A., Szczygiel, J., Tomaszewska, M., Wójcik, J., Zielonka, D., Chiru, M., Deme, S., Manescu, S., Nica, SM., Popescu, C., Szatmari, S., Fedyanin, A., Malkova, N., Popov, D., Volkova, L., Vorobeva, O., Brozman, M., Cimprichova, A., Cuchran, P., Gurcik, L., Krastev, G., Lisá, I., Nyeky, M., Poljaková, J., Turcani, P., Frost, A., Heckmann, J., Agüera, E., Coret, F., Escartin, A., Fernandez, V., Callizo, JR. Ara, Martin, G., Martinez-Rodriguez, JE., Gines, M. Martinez, Munoz, D., Olascoaga, J., Prieto, J., Ramo-Tello, C., Belal, S., Ben Ammou, S., Frih-Ayed, M., Gouider, R., Mhiri, C., Mrissa, R., Cherkez, A., Chmyr, H., Chudovska, L., Datskevych, S., Dziak, L., Galusha, A., Khavunka, M., Kobys, T., Kozyolkin, O., Lekomtseva, Y., Litovchenko, T., Moroz, O., Moskovko, G., Pashkovsky, V., Sanotskyi, Y., Shkrobot, S., Braley, T., Conway, J., Hughes, B., Katz, A., Rizvi, S., and Singer, R.

Published
2022
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7. Solaris photometric survey: Search for circumbinary companions using eclipse timing variations.

Author

Moharana, A, Hełminiak, K G, Marcadon, F, Pawar, T, Pawar, G, Garczyński, P, Perła, J, Kozłowski, S K, Sybilski, P, Ratajczak, M, and Konacki, M

Subjects
LIGHT curves, TIME management, ECLIPSING binaries, STELLAR activity, TELESCOPES
Abstract

Eclipse timing variations (ETVs) have been a successful tool for detecting circumbinary companions to eclipsing binaries (EBs). While TESS and Kepler have been prolific for ETV searches, they sometimes can be limited by time and sky coverage, a limitation that can be addressed by specialized ground-based ETV surveys. We present the initial results from the Solaris photometric survey, which uses four 0.5-m robotic telescopes in the Southern hemisphere to look for circumbinary companions. We present the method of light-curve extraction, detrending, and EB modelling using observations from the Solaris network. Using these light curves, we extract precise eclipse timings for seven EBs and look for companions using a Lomb–Scargle periodogram search. We find two possible periodic signals for the target GSC 08814–01026. With the system having strong activity, we check for the feasibility of orbital solutions at these two periods. We find that the 245 ± 1 d period is due to an M dwarf-mass companion. This makes GSC 08814–01026 a candidate compact hierarchical triple system. The other periodic signal at 146 ± 1 d is an artefact of stellar activity. [ABSTRACT FROM AUTHOR]

Published
2024
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8. The most important psychological and psychosocial needs of Polish multiple sclerosis patients and their significant others

Author

Potemkowski A, Brola W, Ratajczak A, Ratajczak M, Kowalewski M, Lewita M., Kapica-Topczewska K, Tarasiuk J, Stępień A, Gocyla-Dudar K, Zaborski J, and Bartosik-Psujek H

Subjects
multiple sclerosis, unmet needs, needs assessment, Poland, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
Abstract

Andrzej Potemkowski,1 Waldemar Brola,2,3 Anna Ratajczak,4 Marcin Ratajczak,5 Mariusz Kowalewski,6 Małgorzata Lewita,6 Katarzyna Kapica-Topczewska,7 Joanna Tarasiuk,7 Adam Stępień,8 Katarzyna Gocyła-Dudar,8 Jacek Zaborski,9 Halina Bartosik-Psujek10 1Department of Clinical Psychology and Psychoprophylaxis, University of Szczecin, 2Department of Neurology, Specialist Hospital, Końskie, 3The Faculty of Medicine and Health Science, Institute of Physiotherapy, Jan Kochanowski University, Kielce, 4Pomeranian Medical University, Szczecin, 5Clinical Trial Center for MS-Patients, Szczecin, 6John Paul II Multiple Sclerosis Rehabilitation Center, Borne Sulinowo, 7Department of Neurology, Medical University of Białystok, Białystok, 8Department of Neurology, Military Institute of Medicine, Warsaw, 9Department of Neurology, Specialist Hospital in Międzylesie, Warsaw, 10Medical Faculty, University of Rzeszów, Rzeszów, Poland Background: People with multiple sclerosis (MS) and their relatives often have multiple, complex needs which require support from a wide range of services. The aim of the study, the first of its kind in Poland, was to identify the most important needs of patients with MS and their significant others (SO). Methods: A questionnaire developed from focus groups consisting of 20 needs-related statements was administered in seven MS centers to 573 MS patients and 220 SO. The mean age of the patients was 42.61 years old; the mean MS duration was 9.43 years. The respondents were asked to rate the needs statements according to their importance on an 11-point scale. The questionnaire was similar for the MS patients and their SO. Results: The most important needs in the patient group were: to feel needed and efficient in life; to have easy access to professional rehabilitation; and to be sure that doctors are interested in my condition. The three most important needs in the SO group were: to know that relatives/friends feel needed and efficient in life; to have good living conditions; and to be sure that doctors are interested in my relative’s/friend’s condition. Correlation analysis revealed that in the patients group, there was a positive correlation between patient’s age and the importance of factors such as the need for support and interest in their disease from the family doctor (P

Published
2017

12. Strong Variability in AzV 493, an Extreme Oe-type Star in the SMC.

Author

Oey, M. S., Castro, N., Renzo, M., Vargas-Salazar, I., Suffak, M. W., Ratajczak, M., Monnier, J. D., Szymanski, M. K., Phillips, G. D., Calvet, N., Chiti, A., Micheva, G., Rasmussen, K. C., and Townsend, R. H. D.

Subjects
SMALL magellanic cloud, EARLY stars, BLACK holes, X-ray detection, CIRCUMSTELLAR matter, NEUTRON stars
Abstract

We present 18 yr of OGLE photometry together with spectra obtained over 12 yr revealing that the early Oe star AzV 493 shows strong photometric (Δ I < 1.2 mag) and spectroscopic variability with a dominant, 14.6 yr pattern and ∼40 day oscillations. We estimate the stellar parameters T eff = 42,000 K, log L / L ⊙ = 5.83 ± 0.15 , M / M ⊙ = 50 ± 9, and v sin i = 370 ± 40 km s−1. Direct spectroscopic evidence shows episodes of both gas ejection and infall. There is no X-ray detection, and it is likely a runaway star. The star AzV 493 may have an unseen companion on a highly eccentric (e > 0.93) orbit. We propose that close interaction at periastron excites ejection of the decretion disk, whose variable emission-line spectrum suggests separate inner and outer components, with an optically thick outer component obscuring both the stellar photosphere and the emission-line spectrum of the inner disk at early phases in the photometric cycle. It is plausible that AzV 493's mass and rotation have been enhanced by binary interaction followed by the core-collapse supernova explosion of the companion, which now could be either a black hole or a neutron star. This system in the Small Magellanic Cloud can potentially shed light on OBe decretion disk formation and evolution, massive binary evolution, and compact binary progenitors. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Tenofovir DF/emtricitabine and efavirenz combination therapy for HIV infection in patients treated for tuberculosis: the ANRS 129 BKVIR trial

Author

Lortholary, Olivier, Roussillon, Caroline, Boucherie, Céline, Padoin, Christophe, Chaix, Marie-Laure, Breton, Guillaume, Rami, Agathe, Veziris, Nicolas, Patey, Olivier, Caumes, Eric, May, Thierry, Molina, Jean-Michel, Robert, Jérome, Tod, Michel, Fagard, Catherine, Chêne, Geneviève, Aumaître, H., Borsato, F., Malet, M., Médus, M., Moreau, L., Neuville, S., Saada, M., Abgrall, S., Ahoudji, D., Balmard, L., Bentata, M., Bouchaud, O., Boudribila, A., Cailhol, J., Dhote, R., Djebbar, R., Gros, H., Honoré, P., Huynh, T., Krivitzky, A., Mansouri, R., Pizzocolo, C., Rouges, F., Viot, E., Amar, B., Bantsimba, J., Dellion, S., Patey, O., Richier, L., Dupon, M., Dutronc, H., Neau, D., Ragnaud, J. M., Raymond, I., Boucly, S., Gailhoustet, L., Lortholary, O., Maignan, A., Touam, F., Viard, J. P., Bergmann, J. F., Boulanger, E., Delcey, V., Diemer, M., Durel, A., Jouade, F., Parrinello, M., Rami, A., Sellier, P., Brazille, P., Leclerc, C., Welker, Y., Bernard, L., Berthé, H., Perronne, C., Salomon, J., de Truchis, P., Bolliot, C., Couzigou, C., Derradji, O., Escaut, L., Teicher, E., Vittecoq, D., Chakvetadze, C., Fontaine, C., LʼYavanc, T., Maresca, A., Pialoux, G., Slama, L., Tuna, L., Bornarel, D., Boué, F., Chassaing, A., Chaiba-Berroukeche, L., Chambrin, V., Delavalle, A. M., Galanaud, P., Levy, A., Pignon, C., Bonnet, D., Ecobichon, J. L., Fournier, I., Fraquiero, G., Gerbe, J., Gervais, A., Guiyedi, V., Iordache, L., Joly, V., Klutse, P., Laurichesse, J. J., Leport, C., Onanga, M., Pahlaval, G., Phung, B. C., Ralaimazava, P., Yeni, P., Almasi, F., Basler, M., Benammar, N., Brunes, A., Guérin, C., Guillevin, L., Meddour, R., Salmon, D., Spiridon, G., Tahi, T., Bloch, M., Ferreira, C., Mahe, I., Manceron, V., Minozzi, C., Mortier, E., Simonpoli, A. M., Vinceneux, P., Zeng Ai, F., Chesnel, C., Dominguez, S., Jouve, P., Lascaux-Cametz, A. S., Lelièvre, J. D., Levy, Y., Melica, G., Sobel, A., Bentaleb, N., Blondin-Diop, A., Bonmarchand, M., Bossi, P., Brancon, C., Breton, G., Bricaire, F., Caby, F., Canestri, A., Clavel, C., Edeb, N., Herson, S., Iguertsira, M., Katlama, C., Kouadio, H., Lagarde, P., Lopez, J. L., Marguet, F., Martinez, V., Remidi, H., Simon, A., Souchon, J. F., Valantin, M. A., Bollens, D., Girard, P. M., Lagneau, J. L., Lefebvre, B., Mouchotte, R., Ouazene, Z., Sebire, M., Theveny-Christiany, A., Valin, N., Bourgarit, A., de Castro, N., Delgado, J., Ferret, S., Lascoux-Combe, C., Molina, J. M., Parlier, S., Pavie, J., Pintado, C., Ponscarme, D., Rachline, A., Sereni, D., Taulera, O., de Verdiere, C., Vincent, F., Bernard, N., Bonarek, M., Bonnet, F., Delaune, J., Lacoste, D., Louis, I., Malvy, D., Mercier, P., Morlat, P., Pertusa, M. C., Schottey, M., Chanteloube, N., Eden, A., Le Moing, V., Makilson, A., de Boever, C. Merle, Reynes, J., Turrière, C., Tramoni, C., Vidal, M., Anavena, C., Billaud, E., Biron, C., Bonnet, B., Bouchez, J., Boutoille, D., Brosseau, D., Brunct, C., Colas, M., Feuillebois, N., Hüe, H., Launay, E., le Houssine, P. Morineau, Raffi, F., Reliquet, V., Cua, E., Dellamonica, P., Durant, J., Rahelinirina, V., Arvieux, C., Chapplain, J. M., Fily, F., Labbay, E., Michelet, C., Morin, F., Peaucelle, C., Revest, M., Ratajczak, M., Souala, F., Tattevin, P., Thomas, R., Alvarez, M., Balsarin, F., Bonnet, E., Busato, F., Cuzin, L., Marche, D., Marchou, B., Massip, P., Obadia, M., Porte, L., Aissi, E., Ajana, F., Alcaraz, I., Baclet, V., Dubus, S., Gérard, Y., Guerroumi, H., Huleux, T., Lahouste, A., Marien, M. C., Melliez, H., Mouton, Y., Pennel, M. P., Valette, M., Viget, N., Yazdanpanah, Y., Bevilacqua, S., Boyer, L., Lecompte, T., Letranchant, L., May, T., Rabaud, C., Thomas, L., Vancon, R., Wassoumbou, S., Abboud, P., Borsa-Lebas, F., Caron, F., Debab, Y., Etienne, M., Faucon, M., Gueit, I., Brouqui, P., Mokhtari, S., Moreau, J., Schlojsers, M., Vandergheynst, E., Chousterman, M., Delacroix-Szmania, I., El Harrar, B., Garrait, V., Joannes, S., Luquet-Besson, I., Mouchet, M., Richier, L., Stevens, A. Blase, Dupont, C., Maresca, A. Freire, Greffe, S., Hanslik, T., Landi, B., Leporrier, J., Rouveix, E., Toth, K., El Mansouf, L., Khuong-Josses, M. A., Méchali, D., Le Besnerais, J. Phalip, Taverne, B., Barclay, F., Fain, O., Flexor, G., Stirnemann, J., Tassi, S., Levast, M., Rogeaux, O., Raffenot, D., Tous, J., Lortholary, O., Bouchaud, O., Chaix, M. L., Chêne, G., Couffin-Cadiergues, S., Dupon, M., Fagard, C., Joly, V., Launay, O., Molina, J. M., Robert, J., Roussillon, C., Rouzioux, C., Tod, M., Yazdanpanah, Y., Lortholary, O., Breton, G., Caumes, E., May, T., Roussillon, C., Veziris, N., Badets, M., Boucherie, C., Fagard, C., Chêne, G., Roussillon, C., Terras, N., Guérin, C., Altare, F., Bourgarit, A., Carcelain, G., Trylesinski, A., Aubron-Olivier, C., Nguyen, T., and Bennai, Y.

Published
2016
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