Mnestic and intellectual activity of elementary schoolchildren with history of intranatal asphyxia

Purpose: to study intellectual activity and memory of elementary schoolchildren who endured intranatal hypoxia and to define primary defect and secondary disturbances of their brain activity. Materials and methods: the neuropsychological research of memory and intelligence in 32 children aged 7-8 years with the history of intranatal hypoxia is conducted (group A). As an including criterion we considered Apgar scale assessment less than 7 points on the first and the fifth minute of life. The control group (group B) included 32 children with a perinatal lesion of the central nervous system whose Apgar scale assessment on the first and the fifth minute of life made 7 and more points. During our research we used methods of observation, experiment, and conversation. Results. In children who endured intranatal hypoxia the following pathological states dominated against the background of asthenia: retarded development of static functions, postural disorder, a cardiopathy, enuresis, accident and chaotic character of visual active thinking, inactivity of mental processes, mental deficiency, disturbed relations between mental activity programing and control of its execution, defective short term and verbal memory. Conclusion: primary defect in children who endured intranatal hypoxia is connected with organic lesion of diencephalic brain structures, with secondary depression of frontal lobes integrative functions and, as a result, with the inadequate organization of visceral and behavioural functional systems. In the neuropsychological syndrome structure increases the importance of diencephalic disturbances along with depression of orientational and exploratory activity, motivation for task performance and control function of attention and speech over the process aspect of activity. Disturbances of voluntary regulation consist in difficulties of forming and realization of programs, disorders in control over ongoing and ultimate results

Features of involution and local inflammation of uterine tissues after planned caesarian section at various ways of uterine closure

Aim: to determine the method of uterine closure in the planned caesarean section, optimizing its involution and reducing local inflammation. Material and methods: a prospective randomized controlled trial. 135 pregnant women undergone planned caesarian section were examined. We applied different methods of uterine closure: in Group 1 (36 women) - one-row continuous blanket Reverdin's suture; in Group 2 (39 women) - one-row continuous Schmieden's suture; in Group 3 (28 women) - two-row continuous Schmieden's suture; and in Group 4 (32 women) - separate two-row sutures (2nd row - inverted U-shaped). Results. The most aggressive in the severity and duration of the local inflammatory reaction is Schmieden's technique. A two-row suture has the most pronounced delaying effect on the uterine involution. We found a one-row continuous blanket Reverdin's suture to be the optimal method of uterine closure. Conclusion: In comparison with Schmieden's sutures (one- or two-row) or with a two-row interrupted suture, using a one-row continuous blanket Reverdin's suture in uterine closure after planned caesarian section is characterized with quicker involution of the uterus and suture areas above it, with less expressed and shortened inflammation, and with fewer complications

Plant polyprenols reduce demyelination and recover impaired oligodendrogenesis and neurogenesis in the cuprizone murine model of multiple sclerosis

Recent studies showed hepatoprotective, neuroprotective, and immunomodulatory properties of polyprenols isolated from the green verdure of Picea abies (L.) Karst. This study aimed to investigate effects of polyprenols on oligodendrogenesis, neurogenesis, and myelin content in the cuprizone demyelination model. Demyelination was induced by 0.5% cuprizone in CD-1 mice during 10 weeks. Nine cuprizone-treated animals received daily injections of polyprenols intraperitoneally at a dose of 12-mg/kg body weight during Weeks 6-10. Nine control animals and other nine cuprizone-treated received sham oil injections. At Week 10, brain sections were stained for myelin basic protein, neuro-glial antigen-2, and doublecortin to evaluate demyelination, oligodendrogenesis, and neurogenesis. Cuprizone administration caused a decrease in myelin basic protein in the corpus callosum, cortex, hippocampus, and the caudate putamen compared with the controls. Oligodendrogenesis was increased, and neurogenesis in the subventricular zone and the dentate gyrus of the hippocampus was decreased in the cuprizone-treated group compared with the controls. Mice treated with cuprizone and polyprenols did not show significant demyelination and differences in oligodendrogenesis and neurogenesis as compared with the controls. Our results suggest that polyprenols can halt demyelination, restore impaired neurogenesis, and mitigate reactive overproduction of oligodendrocytes caused by cuprizone neurotoxicity

Kaon pair production in proton-nucleus collisions at 2.83 GeV kinetic energy

The production of non-phi K+K- pairs by protons of 2.83 GeV kinetic energy on C, Cu, Ag, and Au targets has been investigated using the COSY-ANKE magnetic spectrometer. The K- momentum dependence of the differential cross section has been measured at small angles over the 0.2--0.9 GeV/c range. The comparison of the data with detailed model calculations indicates an attractive K- -nucleus potential of about -60 MeV at normal nuclear matter density at a mean momentum of 0.5 GeV/c. However, this approach has difficulty in reproducing the smallness of the observed cross sections at low K- momenta.Comment: 7 pages, 5 figures, 1 tabl

Absence of spin dependence in the final state interaction of the d(pol) p --> 3He eta reaction

The deuteron tensor analysing power t_{20} of the d(pol) p --> 3He eta reaction has been measured at the COSY-ANKE facility in small steps in excess energy Q up to Q = 11 MeV. Despite the square of the production amplitude varying by over a factor of five through this range, t_{20} shows little or no energy dependence. This is evidence that the final state interaction causing the energy variation is not influenced by the spin configuration in the entrance channel. The weak angular dependence observed for t_{20} provides useful insight into the amplitude structure near threshold.Comment: 5 pages, 4 figure

Luminescent properties of Bi-doped polycrystalline KAlCl4

We observed an intensive near-infrared luminescence in Bi-doped KAlCl4 polycrystalline material. Luminescence dependence on the excitation wavelength and temperature of the sample was studied. Our experimental results allow asserting that the luminescence peaked near 1 um belongs solely to Bi+ ion which isomorphically substitutes potassium in the crystal. It was also demonstrated that Bi+ luminescence features strongly depend on the local ion surroundings

The production of K+K- pairs in proton-proton collisions at 2.83 GeV

Differential and total cross sections for the pp -> ppK+K- reaction have been measured at a proton beam energy of 2.83 GeV using the COSY-ANKE magnetic spectrometer. Detailed model descriptions fitted to a variety of one-dimensional distributions permit the separation of the pp -> pp phi cross section from that of non-phi production. The differential spectra show that higher partial waves represent the majority of the pp -> pp phi total cross section at an excess energy of 76 MeV, whose energy dependence would then seem to require some s-wave phi-p enhancement near threshold. The non-phi data can be described in terms of the combined effects of two-body final state interactions using the same effective scattering parameters determined from lower energy data.Comment: 12 pages, 12 figures, 3 table

Search for the decay B+→K‾∗0K∗+B^+\rightarrow\overline{K}{}^{*0}K^{*+} at Belle

We report a search for the rare charmless decay $B^+\rightarrow\overline{K}{}^{*0}K^{*+}$ using a data sample of $772\times10^6$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. No statistically significant signal is found and a 90% confidence-level upper limit is set on the decay branching fraction as $\mathcal{B}(B^+\rightarrow\overline{K}{}^{*0}K^{*+}) <1.31\times 10^{-6}$.Comment: 8 pages, 3 figures, submitted to PRD(RC