Comparative study on the distribution and expression of Neuroglobin and Hypoxia-inducible factor-1α in the telencephalon of yak and cattle

The telencephalon refers to the most highly developed and anterior part of the forebrain, consisting mainly of the cerebral hemispheres. The study determined Neuroglobin (Ngb) and Hypoxia-inducible factor (HIF-1α) expression in the telencephalon of yak and cattle, and compare the expression and distribution pattern of Ngb and HIF-1α in the two animals. Immunohistochemistry (IHC), quantitative real-time Polymerase Chain Reaction (qRT-PCR), and Western blot (WB) were employed to investigate Ngb and Hif-1α expression in the telencephalon of yak and cattle. mRNA and protein expressions of Ngb and HIF-1α showed positive in different tissues of the yak and cattle telencephalon. Ngb expression in tissues of the yak recorded higher as compare to cattle while HIF-1α expression was found higher in cattle than yak. The HIF-1α expression in some tissues of yak telencephalon was consistent with the cattle. The results documented that HIF-1α may have a direct or indirect synergistic effect on Ngb expression in the yak telencephalon to improve hypoxia adaptation. It is suggested that yak may need more Ngb expression for adaptation, but the expression of HIF-1α seems to be down-regulated during long-term adaptation, and the specific causes of this phenomenon needs to be further verified.

Was the Hydranencephaly Defense Valid for the Death of a Child?: A Case Report

Hydranencephaly is a central nervous system disorder at birth in which brain's cerebral hemispheres are absent and replaced by sacks filled with CSF. The prevalence of hydranencephaly is less than 1 in 10,000 births, with 0.2 percent of children autopsies showing the condition.

EPCO-07. HYBRID NEURO-GLIAL CELLULAR ARCHITECTURE IN HIGH-GRADE GLIOMA DRIVEN BY H3-G34R MUTATION

High-grade gliomas (HGG) with histone H3.3 G34R mutation are rare intractable tumours in the cerebral hemispheres that preferentially affect adolescents and young adults, but have unknown mechanisms of neuroanatomical specificity and tumourigenesis. Here, we performed single-nucleus RNA-sequencing of twenty patient samples, encompassing twelve tumours with G34R mutation and eight H3.3 wildtype HGGs, age- and location-matched. Both classes of HGG were heterogeneous, with malignant cells in multiple states, recapitulating neural and glial developmental trajectories. G34R HGG is distinguished by lack of malignant cells in the oligodendroglial lineage, and aberrant expression of neuronal programs superimposed over cellular states, resulting in hybrid glio-neuronal malignant programs. Singe-cell barcoding supports plasticity between cellular states in HGG with multiple possible transitions. CRISPR-correction of G34R in HGG models followed by scRNA-seq supports that the G34R mutation directly drives these aberrant programs. Our study provides a framework for studying the origin and tumourigenesis of paediatric gliomas.

Cerebral Hemispheric Dominance and Lateralization. Examination methods and procedures

On the basis of electrophysiological and neuropsychological investigations the existence of cerebral hemispheric dominance has been established. Thus, a certain psycho-behavioural function may not be equally governed by either the left or the right hemisphere, a tendency towards lateralization coming into play (Sperri, 1974; Arseni, Golu, Dănăilă, 1983; Funnell, Carballis, Gazzanga, 2000). The functional asymmetry of the analysers is encountered both at the peripheral level, through the sensory-motor lateralization of paired receptors, and at the cortical level, through the asymmetrical functioning of the cerebral hemispheres. Consequently, tests for hemispheric dominance, as well as tests for lateralization must, respectively, be employed. When examining cerebral hemispheric dominance and lateralization, the characteristics of the organs under investigation are taken into account, and so is the age of the subjects. The examination of functional asymmetry in the case of analyzers with paired receptors has relied on an impressive number of trials, procedures, tests and questionnaires on lateralization, all suitable for the subjects’ age and for the psycho-physiological characteristics of the respective couple of paired organs. The combined use of lateralization tests specifically adapted for all paired organs (hand, eye, is essential in order to establish the degree of lateralization homogeneity. The examinations and the calculation of the laterality index are to be done periodically, the results being recorded in a chart that reflects the evolution of lateralization as a result of engaging the child in various activities meant for a specific type of lateralization.

Anatomical variations of sulci in human fetal cerebrum and its clinical significance

Introduction and Aim: Appearance of sulci and its number in the fetal cerebrum is a signal of growth and development. Chronological appearance and symmetrical development of sulci corresponds to gestational age of fetus. Few sulci can be visualized in the prenatal period to judge the growth of fetus. Any change in chronological appearance, symmetry and number of sulci in fetal cerebrum is of prime importance. Materials and Methods: Hundred and six cerebral hemispheres of 53 fetal brains of different gestational ages were collected from MGM Hospital Kalamboli and Aurangabad after institutional ethical approval to study the pattern of sulci on both sides after fixing in 10% formalin. Results: In 6 (5.6 %) cerebral hemispheres variation in appearance of sulci was observed. It was noted that there is change in number of superior temporal sulcus (STS), superior frontal sulcus (SFS), parieto-occipital sulcus (POS), calcarine sulcus (CS) and occipitotemporal sulcus (OTS) on both the sides in 6 cerebral hemispheres. Remaining 100 cerebral hemisphere showed normal, symmetrical appearance and number of sulci. Conclusion: It was observed that the fetal cerebral hemispheres which showed variations in appearance and number of sulci were associated with mother having eclampsia.

Autonomic rhythm regulation of elite wrestlers with different dominance of brain hemisphere

The results of a study of the autonomous regulation of the heart rate in elite wrestlers with different dominance of the cerebral hemispheres were present in the manuscript 23 elite wrestlers. Were examined members of the National Team of Ukraine in Greco-Roman wrestling, aged 22-34 years-old. A body composition monitor "Omron BF511" and a computer electrocardiograph "Fazagraf" were used. It was revealed that elite wrestlers with a dominance of the right hemisphere have more intense regulation of the heart rhythm compared to wrestlers with a dominance of the left hemisphere of the brain. With an increase in the tension of the system of autonomous regulation of the heart rhythm in wrestlers with the dominance of the right hemisphere of the brain, the activation of the central and sympathetic division of regulation occurs. For the purpose of a more effective preparation process and in the development of individual training programs for elite wrestlers, it is necessary to determine the dominance of the cerebral hemispheres.

Immune response and localization of focal brain lesions

Since the discovery of the functional asymmetry of the cerebral hemispheres, interhemispheric lateralization and intrahemispheric organization of the brain have been a leading problem in clinical neurology.

0 trigemino-vagal reflex

Reflexology is the most fruitful part of neurology. With the accumulation of data in this area and the establishment of new principles and laws, our knowledge about the functions of the brain deepens, starting with simple reflexes of the medullae spinalis (Marschal ) and ending with complex reflexes of the cerebral hemispheres (combined, inhibited reflexes).

Diagnostic of psychoemotional and cognitive impairments in acute ischemic stroke

Aims: to assess the severity of cognitive, psychoemotional, behavioral disorders, the level of self-control and prevalence of certain coping strategies in patients with lesions of the right and left cerebral hemispheres after acute ischemic stroke. Materials and methods: The study included 60 patients with a diagnosis of ischemic stroke. Depending on the location of the stroke, patients were divided into two groups: Group 1 - 30 patients with lesions of the right hemisphere, Group 2 - 30 patients with lesions of the left hemisphere. The study was conducted on the 7th day of treatment and included: assessment of the cognitive status according to the Montreal scale (with additional scales for assessing the functions of the right hemisphere); assessment of the level of distress, depression, anxiety and somatization using the Four DimensionalSymptomQuestionnaire; assessment of mental and physical asthenia according to the MFI-20 scale, level of self-control using the Rotter'sLocus of Control Scale and coping strategies modality using E. Heim coping questionnaire. Results: The study established the prevalence of depression, a tendency towards non-adaptive coping strategies, ideational praxis related disorders understanding of metaphors and low level of self-control in relation to health in patients with lesions of the right hemisphere. Patients with ischemic stroke localized in the left hemisphere are characterized by a high level of mental asthenia, a choice of adaptive and relatively adaptive coping strategies, and a low level of self-control in respect to interpersonal relationships. Conclusions: The results of the study show that in the acute period of stroke there are qualitative and quantitative differences in neuropsychiatric symptoms of patients with lesions of the right and left cerebral hemispheres. The predominance of depression, cognitive impairments, and non-adaptive coping strategies in patients with lesions of the right hemisphere even with minimal or moderate motor deficits justifies early examination of the patient's behavioral, neuropsychiatric, and cognitive syndromes. The results of the study indicate the need to develop individual psychological rehabilitation programs for patients with lesions of the right and left cerebral hemispheres during the acute period of stroke.