Spectroscopy and Directed Transport of Topological Solitons in Crystals of Trapped Ions.

We study experimentally and theoretically discrete solitons in crystalline structures consisting of several tens of laser-cooled ions confined in a radio frequency trap. Resonantly exciting localized, spectrally gapped vibrational modes of the soliton, a nonlinear mechanism leads to a nonequilibrium steady state of the continuously cooled crystal. We find that the propagation and the escape of the soliton out of its quasi-one-dimensional channel can be described as a thermal activation mechanism. We control the effective temperature of the soliton's collective coordinate by the amplitude of the external excitation. Furthermore, the global trapping potential permits controlling the soliton dynamics and realizing directed transport depending on its topological charge.

Extracellular matrix remodeling in canine and mouse myocardial infarcts.

Extracellular matrix proteins not only provide structural support, but also modulate cellular behavior by activating signaling pathways. Healing of myocardial infarcts is associated with dynamic changes in the composition of the extracellular matrix; these changes may play an important role in regulating cellular phenotype and gene expression. We examined the time course of extracellular matrix deposition in a canine and mouse model of reperfused infarction. In both models, myocardial infarction resulted in fragmentation and destruction of the cardiac extracellular matrix, extravasation of plasma proteins, such as fibrinogen and fibronectin, and formation of a fibrin-based provisional matrix providing the scaffold for the infiltration of granulation tissue cells. Lysis of the plasma-derived provisional matrix was followed by the formation of a cell-derived network of provisional matrix composed of cellular fibronectin, laminin, and hyaluronic acid and containing matricellular proteins, such as osteopontin and osteonectin/SPARC. Finally, collagen was deposited in the infarct, and the wound matured into a collagen-based scar with low cellular content. Although the canine and mouse infarcts exhibited a similar pattern of extracellular matrix deposition, deposition of the provisional matrix was more transient in the mouse infarct and was followed by earlier formation of a mature collagen-based scar after 7-14 days of reperfusion; at the same timepoint, the canine infarct was highly cellular and evolving. In addition, mature mouse infarcts showed limited collagen deposition and significant tissue loss leading to the formation of a thin scar. In contrast, dogs exhibited extensive collagen accumulation in the infarcted area. These species-specific differences in infarct wound healing should be taken into account when interpreting experimental infarction studies and when attempting to extrapolate the findings to the human pathological process.

Aminoguanidinium(2+) aminoguanidinium(1+) hexachloroantimonate(III) at 295 and 92 K.

The crystal and molecular structure of the title compound, (CH(7)N(4))(CH(8)N(4))[SbCl(6)], has been determined at 295 and 92 K. It is composed of isolated [SbCl(6)](3-) octahedra and aminoguanidinium mono- and dications. One of four of the crystallographically inequivalent aminoguanidinium cations is disordered at both temperatures. Two crystallographically inequivalent [SbCl(6)](3-) octahedra were found to possess three significantly longer Sb-Cl bonds than three other octahedra. The shorter bonds are in the range 2.456 (2)-2.577 (2) A, whereas the longer ones are between 2.705 (2) and 2.931 (2) A. Each short Sb-Cl bond is located trans to a long bond. It is argued that this deformation is caused by N-H.Cl hydrogen bonds.

[2 cases of acute disseminated intravascular coagulation in normal pregnancy and as the first symptom of acute promyelocytic leukemia]. / Dwa przypadki ostrego zespolu wykrzepiania wewnatrznaczyniowego w przebiegu prawidlowej ciay oraz jako pierwszy objaw ostrej bialaczki promielocytowej.

Two cases of the acute disseminated intravascular coagulation (DIC) are presented. DIC in the first case was diagnosed in healthy pregnant woman without any obstetric pathology. This patient recovered completely. The acute DIC in another patient preceded the acute promyelocytic leukemia. The patient died despite a control of DIC. DIC therapy included antifibrinolytic agents and additionally corticoids in pregnant patient. Heparin was not administered because of post partum period and foreseen cytostatic therapy in the leukemic patient.

[Rotated, exceedingly movable kidney vascularized by four atypically branched arteries as a cause of periodic urinary retention in the pyelo-caliceal system and masked by biliary colic]. / Zrotowana, nadmiernie ruchoma nerka unaczyniona przez cztery tetnice o nietypowym odejsciu przyczyna okresowego zastoju w ukladzie kielichowo-miedniczkowym przebiegajacego pod maska kolki zólciowej.

A case of the young female patient is presented. The patient was treated for urolithiasis for several years. The disease was diagnosed with urography only revealing urinary retention. The use of a contrast enabled to diagnose disorders of the vascularization of kidneys causing urinary retention. It is worth mentioning that atypical localization of pain in the right epigastric region additionally complicated the diagnosis.

[Determining acebutolol level in the blood serum]. / Oznaczanie acebutalolu w surowicy krwi.

A simple method for isolation of acebutolol from blood serum, and conditions of thin-layer chromatography for detection of this drug in blood are reported. An own colorimetric method has been developed for the determination of acebutolol after its isolation and hydrolysis in the medium of sulphuric acid. Results of the determinations were subjected to statistical analysis. The methods were elaborated using model samples prepared by addition of the acebutolol working standard to blood serum. Sensitivity of the acebutolol detection by thin-layer chromatography under elaborated conditions proved to reach the level of 0.5 microgram.