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[Value of detection of cell-free fetal DNA in maternal plasma in the prenatal diagnosis of chromosomal abnormalities].

OBJECTIVE: To investigate the value of detection of fetal cell-free fetal DNA (cff-DNA) in maternal plasma in the prenatal diagnosis of chro … ases who didn't take karyotype analysis, fetal anomaly (ventricular septal defect, dextrocardia and choroid plexus cyst) was found in 1 case before 20 gestational weeks; intrauterine fetal demise happened in 1 case before getting the result; 2 other cases who already had healthy children took abortion in the local hospital without taking amniocentesis. In the 4 …

Comparative histology of pineal calcification.

The pineal organ (pineal gland, epiphysis cerebri) contains several calcified concretions called "brain sand" or acervuli (corpora arenacea) … y in the actual pineal tissue but also in the leptomeninges, in the habenular commissure and in the choroid plexus. Studies with the potassium pyroantimonate (PPA) method on the ultrastructural localization of free calcium ions in the human pineal, revealed the presence of calcium alongside the cell membranes, a finding that underlines the importance of membrane …

Interferon alpha/beta mediates early virus-induced expression of H-2D and H-2K in the central nervous system.

Cells of the central nervous system (CNS) normally do not express detectable levels of major histocompatibility complex (MHC) Class I antigens. However, MHC Class I expression can be induced after virus infection. We tested the hypothesis that virus-induced Class I expression is mediated by lymphocytes or cytokines using lymphocyte- and cytokine-deficient mice. We used Theiler's murine encephalomyelitis virus (TMEV), which induces CNS demyelination that maps genetically to the D region of MHC Class I and is associated with high levels of Class I products. TMEV infection of severe combined immu

Tc-99m MIBI brain SPECT of cerebellopontine angle tumors.

To prospectively evaluate the imaging feasibility of Tc-99m sestamibi brain SPECT of cerebellopontine angle (CPA) tumors, seven patients with CPA lesions seen on CT or MRI and five normal control subjects underwent brain SPECT using a triple-headed camera. Five of these patients had acoustic neuromas, one had a meningloma, and the other had a vascular loop. Subsequently, four patients underwent surgery. In normal control subjects and patients with CPA lesions, there was Tc-99m sestamibi activity in the pituitary gland, choroid plexi, and extraocular muscles. The uptake in these structures, esp

Molecular water pumps.

There is good evidence that cotransporters of the symport type behave as molecular water pumps, in which a water flux is coupled to the substrate fluxes. The free energy stored in the substrate gradients is utilized, by a mechanism within the protein, for the transport of water. Accordingly, the water flux is secondary active and can proceed uphill against the water chemical potential difference. The effect has been recognized in all symports studied so far (Table 1). It has been studied in details for the K+/Cl- cotransporter in the choroid plexus epithelium, the H+/lactate cotransporter in t…

Expression of TGF-betas and TGF-beta type II receptor in cerebrospinal fluid of patients with idiopathic normal pressure hydrocephalus.

We investigated cerebrospinal fluid (CSF) samples from 21 patients with idiopathic normal pressure hydrocephalus (INPH) and 14 controls without neurological disease. The concentrations of leucine-rich alpha-2-glycoprotein (LRG), transforming growth factor (TGF)-beta1, 2, 3 and TGF-beta type II receptor (TbetaR-II) in CSF were measured using ELISA. TGF-beta1, TbetaR-II and LRG CSF levels of patients with INPH were significantly higher than controls, whereas no significant differences in TGF-beta2 levels were found between INPH patients and controls. The present study suggests that TGF-betas exp

[Discovery of alpha-Klotho and FGF23 unveiled new insight into calcium and phosphate homeostasis].

Recent advances that have given rise to marked progress in clarifying actions of alpha-Klotho (alpha-Kl) and FGf23 can be summarized as follows ; (i) alpha-Kl binds to Na(+), K(+)-ATPase, and Na(+), K(+)-ATPase is recruited to the plasma membrane by a novelalpha-Kl dependent pathway in correlation with cleavage and secretion ofalpha-Kl in response to extracellular Ca(2+) fluctuation. (ii) The increased Na(+) gradient created by Na(+), K(+)-ATPase activity drives the transepithelial transport of Ca(2+) in the choroid plexus and the kidney, this is defective in alpha-kl(-/-) mice. (iii) The regu…

Ангиография оптической согласованности — полезное средство для отличия первичного феномена Рейно от системного склероза и/или очень ранней болезни системного склероза.

Цель этого межсекторального исследования заключалась в сопоставлении результатов оптической ангиографии, полученной пациентами, с первичным явлением Рейно (PRP; n = 22), очень раннее заболевание системного склероза (VEDOS; n = 19), и системный склероз (SSc; 25 пациентов с ограниченным количеством SSc (lcSSc) и 13 - пациентов с диффузным резиновым SSc (dcSSc)). Целые, парафовиальные и перифовенные поверхностные капиллярные сплексы (ПХФ) плотность судна (ДГ), глубокие капиллярные сплетения VD и целые, внутренние и перипапольные VD были значительно выше в группе ПРП (p) < 0.001). В группе IcSSc п

SARS-CoV-2 infection of the central nervous system in a 14-month-old child: A case report of a complete autopsy.

BACKGROUND: Neurological and other systemic complications occur in adults with severe COVID-19. Here we describe SARS-CoV-2 infection compli … atrophy, and severe neuronal loss. SARS-CoV-2 staining was observed along the apical region of the choroid plexus (ChP) epithelium and in ependymal cells of the lateral ventricle, but was restricted to ChP capillaries and vessels in some regions. SARS-CoV-2 infection of brain tissue was confirmed by RT-qPCR in fragments of the ChP, lateral ventricle, and cortex …

Second trimester ultrasound markers of fetal aneuploidy.

Although it is widely accepted that the best time to screen for chromosomal abnormalities is the first trimester, ultrasound evaluation of the fetus in the second trimester has also been shown to be useful for this purpose. A multitude of markers of varying strength has been developed over the past 30 years. In addition, the optimal time to diagnose fetal anomalies with confidence is also the mid second trimester. Therefore, performance of obstetrical ultrasound at this point in gestation continues to be an important component of prenatal care.

Posterior fossa lesions associated with neuropsychiatric symptomatology.

We reviewed 7 cases with posterior fossa structural abnormalities (3 tumors, 2 megacisterna magna and 2 Dandy-Walker syndrome) presenting with neuropsychiatric symptomatology. Derangement in the balance of dopamine, serotonin and noradrenergic networks has been implicated in the pathogenesis of schizophrenia, affective and even personality disorders. Disruption of the cerebellar output to mesial dopaminergic areas, locus coeruleus and raphe nuclei, or deafferentation of the thalamolimbic circuits by a cerebellar lesion may lead to behavioral changes. Seven patients (pts) (comprising 4 men and

The nitric oxide hypothesis of aging.

Nitric oxide (NO), generated by endothelial (e) NO synthase (NOS) and neuronal (n) NOS, plays a ubiquitous role in the body in controlling t … ncy of two and four hours, respectively, in the anterior pituitary and pineal glands, meninges, and choroid plexus, regions outside the blood-brain barrier, and shortly thereafter, in hypothalamic regions, such as the temperature-regulating centers, paraventricular nucleus containing releasing and inhibiting hormone neurons, and the arcuate nucleus, a region con …

Developmental expression pattern of Stra6, a retinoic acid-responsive gene encoding a new type of membrane protein.

Retinoic acid plays important roles in development, growth and differentiation by regulating the expression of target genes. A new retinoic acid-inducible gene, Stra6, has been identified in P19 embryonal carcinoma cells using a subtractive hybridization cDNA cloning technique. Stra6 codes for a very hydrophobic membrane protein of a new type, which does not display similarities with previously characterized integral membrane proteins. Stra6, which exhibits a specific pattern of expression during development and in the adult, is strongly expressed at the level of blood-organ barriers. Interest

Роль врожденных иммунных клеток в множественном склерозе.

Множественный склероз (MS) — хроническое аутоиммунное, воспалительное и нейродегенеративное заболевание, затрагивающее центральную нервную систему (КНС). MS ассоциируется со сложным взаимодействием между нейродегенеративными и воспалительными процессами, в основном связанными с патогенными Т и В клетками. Однако все большее количество доклинических и клинических данных свидетельствует о том, что врожденный иммунитет играет ключевую роль в поощрении и развитии НР. В этой связи в настоящее время изучаются доклинические и клинические исследования, ориентированные на различные врожденные иммунные

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… Under homeostatic conditions, macrophages in the CNS can be found in the meninges, perivascular space, and choroid plexus, which are referred to as CNS-associated macrophages (CAMs) (also known as border-associated macrophages (BAMs)) ( 70 ). … CAMs are highly heterogeneous and can be further divided depending on their anatomical positions into meningeal macrophages (mμΦ), choroid plexus macrophages (cpμΦ), and perivascular macrophages (pvμΦ) ( 71 ). …

Presenting characteristics, histological subtypes and outcomes of adult central nervous system tumours: retrospective review of a surgical cohort.

IntroductionThe most recent local study on the incidence of histological subtypes of all brain and spinal tumours treated surgically was published in 2000. In view of the outdated data, we investigated the presenting characteristics, histological subtypes and outcomes of adult patients who underwent surgery for brain or spinal tumours at our institution.MethodsA single-centre retrospective review of 501 patients who underwent surgery for brain or spinal tumours from 2016 to 2020 was conducted. The inclusion criteria were (a) patients who had a brain or spinal tumour that was histologically ver

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… plexus tumors; n (%) | 1 (0.2) | 0 (0.0) | 1 (0.2) Choroid plexus carcinoma | 1 (0.2) | 0 (0.0) | 1 (0.2) Metastases; n (%) | 100 (23.0) | 15 (22.7) | 115 (23.0) Breast carcinoma | 29 (6.0) | 1 (1.5) | 30 (6.0) Non-small cell lung carcinoma, adenocarcinoma | 27 (6.2) | 3 (4.5) | 30 (6.0) Non-small cell … plexus carcinoma (n=1), central neurocytoma (n=1), medulloblastoma (n=1), paraganglioma (n=1), and primitive neuroectodermal tumor (n=1) Abbreviations: SD, standard deviation; CNS, central nervous system. …

Вирусы и "Мозг-отношение к беде".

Неврологические расстройства, некоторые из которых связаны с вирусными инфекциями, растут из-за старения и увеличения численности населения. Несмотря на крепкую защиту центральной нервной системы, некоторые вирусы эволюционировали, чтобы пробить их, что часто приводит к ужасным последствиям. В этом обзоре мы рассказываем о различных способах проникновения различных вирусов в ЦНС и о последствиях таких вторжений. Последствия могут проявляться в виде острых заболеваний, таких, как энцефалит, менингит, или приводить к долгосрочным последствиям, таким, как нервно - мышечная дисфункция, как это име

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… With both pathogens, after a respiratory phase, viremia occurs, and the virus in free form, or bound to host leukocytes, makes contact with BBB endothelial cells as well as choroid plexus blood vessels [ 91 , 92 ]. … Neurons, astrocytes, choroid plexus epithelial cells [ 197 ]. Viruses responsible for neuropathology and clinical outcomes in humans. …

Clinical factors associated with microstructural connectome related brain dysmaturation in term neonates with congenital heart disease.

OBJECTIVE: Term congenital heart disease (CHD) neonates display abnormalities of brain structure and maturation, which are possibly related … r hemispheres and vermis, supratentorial extra-axial fluid, olfactory bulbs and sulci, hippocampus, choroid plexus, corpus callosum, and brainstem. The neuroimaging outcomes of this study included (1) connectome metrics: cost (number of connections) and global/nodal efficiency (network integration); (2) seed based tractography methods of fractional anisotropy (F …

Усовершенствованные методы МРТ: диагностика и последующая деятельность в связи с множественным склерозом

Снимки мозга и спинного мозга играют ключевую роль в оказании помощи врачам в диагностике и мониторинге множественных склерозов. Тем не менее значение магнитного резонансного изображения в MS выходит за рамки его клинической полезности. Усовершенствованные методы визуализации способствовали обнаружению в vivo различных компонентов MS патогенеза, и в последние годы для оценки реакции пациентов с повторной эмиссией MS на имеющиеся методы лечения использовались биомаркеры MRI. Аналогичным образом, показатели МРТ, характеризующие нейродегенерацию, демонстрируют потенциал в качестве первичных и вто

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… Choroid Plexus Enlargement The choroid plexus (CP) plays a pivotal role in immune regulation within the CNS, serving as a crucial interface between the peripheral immune system and the CNS. … Imaging Characteristics of Choroid Plexuses in Presymptomatic Multiple Sclerosis: A Retrospective Study. Neurol. Neuroimmunol. Neuroinflamm. 2022;9:e200026. doi: 10.1212/NXI.0000000000200026. 100. …

Ангиография сетчатых микроваскулярных биомаркеров, измеряемая оптической согласованностью в нейродегенеративных и нейроаскальных расстройствах: систематический обзор и мета-анализ.

Во всем мире в качестве основных причин инвалидности все чаще признаются неевродегенеративные и нейроваскулярные расстройства, которые требуют наличия доступных биомаркеров для раннего обнаружения и мониторинга. Учитывая тесную анатомическую и микроваскулярную связь между сетчаткой и центральной нервной системой, оптическая ангиография, основанная на томографии, стала перспективным неинвазивным методом оценки микроваскулярных изменений сетчатки, связанных с неврологическими заболеваниями. Данный систематический обзор и метаанализ были проведены в соответствии с руководящими принципами PRISMA и