Background: Subarachnoid hemorrhage (SAH) is a devastating neurological disease associated with high rates of mortality and disability. Aneurysms are the main cause of non-traumatic subarachnoid ...hemorrhages. However, non-traumatic non-aneurysmal subarachnoid hemorrhage (naSAH), another clinical type of SAH, has been poorly studied for its prognosis and risk factors. Method and result: We collected demographic and clinical variables for 126 naSAH and 89 aneurysmal subarachnoid hemorrhage (aSAH) patients, including age and gender; hospitalization days; hematological indicators; clinical score scales; past medical history; and personal history. We found that the monocytes in naSAH (0.50 ± 0.26) patients were lower than in aSAH patients (0.60 ± 0.27). The prevalence of diabetes in naSAH (30.2%) patients was higher than in aSAH (14.5%) patients. The naSAH patients were divided into good and poor outcome groups based on the modified Rankin Scale at the 90th day (90-day mRS) after discharge. A univariate analysis showed that there were significant differences in age, white blood cell count (WBC), monocyte count, D-dipolymer, neuron-specific enolase (NSE), random blood glucose (RBG), aspartate transaminase (AST), urea and free triiodothyronine (FT3) between the two groups. A logistic regression showed that aging and high level NSE were independent risk factors for a poor outcome. The predictive ability of age (area under curve (AUC) = 0.71) and NSE (AUC = 0.68) were analyzed by a receiver operating characteristic (ROC) curve. The results of the logistic regression suggested that age, D-dipolymer, NSE, RBG, urea and FT3 distinguished and predicted the prognosis of naSAH. The discriminant analysis of the above variables revealed that the discriminant accuracy was 80.20%. Conclusions: Compared with aSAHs, naSAHs are more likely to occur in patients with diabetes, and the level of monocytes is lower. Moreover, the prognosis of elderly patients with an naSAH is relatively poor, and the level of NSE in the course of the disease also reflects the prognosis. Multivariate comprehensive analysis is helpful to judge the prognosis of patients at a small cost.
Considering the variety of complications that arise after aneurysmal subarachnoid haemorrhage (aSAH) and the complex pathomechanism of delayed cerebral ischaemia (DCI), the task of predicting the ...outcome assumes a profound complexity. Therefore, there is a need to develop early predictive and decision-making models. This study explores the effect of serum biomarkers and clinical scales on patients’ outcomes and their interrelationship with DCI and systemic complications in aSAH. This was a retrospective analysis including aSAH patients admitted to the Wroclaw University Hospital (Wrocław, Poland) from 2011 to 2020. A good outcome was defined as a modified Rankin Scale (mRS) score of 0–2. The prediction of the development of DCI and poor outcome was conducted using logistic regression as a standard model (SM) and random forest as a machine learning method (ML). A cohort of 174 aSAH patients were included in the analysis. DCI was diagnosed in 79 (45%) patients. Significant differences between patients with poor vs. good outcome were determined from their levels of albumin (31 ± 7 vs. 35 ± 5 (g/L); p < 0.001), D-dimer (3.0 ± 4.5 vs. 1.5 ± 2.8 (ng/mL); p < 0.001), procalcitonin (0.2 ± 0.4 vs. 0.1 ± 0.1 (ng/mL); p < 0.001), and glucose (169 ± 69 vs. 137 ± 48 (nmol/L); p < 0.001). SM for DCI prediction included the Apache II scale (odds ratio OD 1.05; 95% confidence interval CI 1.00–1.09) and albumin level (OD 0.88; CI 0.82–0.95). ML demonstrated that low albumin level, high Apache II scale, increased D-dimer and procalcitonin levels had the highest predictive values for DCI. The integration of clinical parameters and scales with a panel of biomarkers may effectively facilitate the stratification of aSAH patients, identifying those at high risk of secondary complications and poor outcome.
Epigenetics is defined as heritable changes in gene activity and expression that occur without alteration in DNA sequence. The gene transcription is strictly correlated to chromatin structure, which ...could undergo covalent modifications of histones involving acetylation, methylation, phosphorylation and ubiquitination. Alterations in histones are implicated in many diseases, including cancer, by leading to tumor suppressor silencing or pro-apoptotic proteins downregulation. Although post-translational addition of methyl groups to the histone lysine has been discovered three decades ago, the importance of this epigenetic modification has emerged only in the last few years. Thenceforward histone methyltransferase inhibitors have been developed as potential therapeutic cancer agents. It should not be long before some selective inhibitors make their way into clinical trials. This review is mainly focused on the evolution in the development of new epigenetic modifier molecules modulating histone marks.
Stroke dapat terjadi akibat terhentinya aliran darah ke otak, yang terjadi secara mendadak. Penyebab terbanyak stroke adalah berkurangnya pasokan darah ke otak (stroke iskemik). Penyebab stroke ...lainnya adalah perdarahan (stroke hemoragik). Perdarahan subaraknoid (SAH) biasanya dapat terjadi baik karena ruptur aneurisma, atau karena trauma. Perempuan, 46 tahun dengan GCS 14 (E4M6V4) dengan hipertensi tidak terkontrol mengalami nyeri kepala hebat. Dari pemeriksaan CT scan memperlihatkan adanya perdarahan subaraknoid dan edema sereberi. Pasien ini dilakukan tindakan coiling aneurisma cito dengan anestesia umum. Pasca coiling pasien dirawat di ruang intensive care unit (ICU). Pasca perawatan 1 hari di ICU, pasien dipindahkan ke ruang high care unit (HCU), dengan kondisi stabil. Penurunan kesadaran mulai terjadi saat perawatan hari kedua, sempat dilakukan pemasangan lumbar drain pada hari ketiga, untuk membantu mengurangi hidrosefalus dan juga menurunkan tekanan intra kranial. Pada perawatan hari ketigabelas kesadaran menurun drastis menjadi E1M1V1, pasien dipindahkan ke ruang ICU, dan meninggal esok harinya. Penurunan kesadaran pasca coiling diakibatkan oleh peningkatan tekanan intra kranial, yang pada kasus ini disebabkan oleh edema sereberi luas. Early Brain Injury ¬ditambah dengan adanya vasopasme menyebabkan terjadinya delayed ischemic neurological deficit. Terapi yang sudah dikerjakan baik farmakologis maupun non farmakologis, tetap tidak bisa memperbaiki keadaan pasien. Delayed Ischemic Neurological Defisit (DIND) Pasca Coiling Subarachnoid Hemorrhage (SAH) e.c Ruptur AneurismaAbstractStroke can occur due to the cessation of blood flow to the brain, which occurs suddenly. The most common cause of stroke is reduced blood supply to the brain (ischemic stroke). Another cause of stroke is bleeding in the brain (hemorrhagic stroke). Subarachnoid hemorrhage (SAH) usually results from ruptured aneurysms or because of trauma. Women, 46 years old with GCS 14 (E4M6V4) with uncontrolled hypertension experienced severe headache since 2 days before admitted to the hospital. The CT scan examination showed subarachnoid hemorrhage and edema of the brain. This patient then performed emergency coiling of aneurysm with general anesthesia. During the procedure the patient is in stable condition. Post coiling the patient was sent to the ICU room. After 1 day in ICU, the patient was transferred to high care unit (HCU) room, with stable condition. Decreased of consciousness began to occur during the second day of treatment, had done lumbar drain installation on the third day, to help reduce the hydrocephalus and also improve intra-cranial pressure. On the thirteenth day care GCS was decrease suddenly to E1M1V1, the patient was transferred to the ICU room, the next day the patient was declared dead. The decrease of consciousness post coiling results from an increase in intra-cranial pressure, which in this case is due to severe brain edema. Earlu brain injury along with the occurence of vasospasm lead to delayed ischemic neurological deficit. Pharmacological and non-pharmacological therapy had been given to the patient still couldn’t improve the patient condition
Background For the treatment of intracranial aneurysms, the low-profile visualized intraluminal support (LVIS) stent is a new generation of highly visible-braided stent that was recently introduced ...in China. Here, we report our single-center retrospective experience of safety and efficacy utilizing LVIS for stent-assisted coiling of intracranial aneurysms.
Methods We included 218 patients with intracranial aneurysms consecutively treated with LVIS SR stents at our center in this study. Postoperative and follow-up embolization scores, procedural complications, clinical and angiographic findings at mid-term follow-up, as well as recurrence rate, preoperative and follow-up mRS scores were analyzed.
Results Two hundred and eighteen patients with two hundred and twenty five intracranial aneurysms were enrolled. The locations and distribution were ICA (125, 55.6%), PcomA (47, 20.9%), VA (38, 16.8%), and BA (15, 6.7%). Two hundred and eighteen aneurysms were treated with the stent-assisted coiling and seven patients with LVIS stents alone. Angiographic follow-up was available for 115 (51.1%) aneurysms, 8 (7.0%) of which had recurrences including 7 (6.5%) unruptured aneurysms and 1(14.3%) ruptured aneurysm. The procedural complication rate was 2.75% in total, including distal hemorrhage (1, 0.45%; SAH), ischemic events (5, 2.3%).
Conclusions Our single-center retrospective experience is one of the larger studies to date assessing the LVIS device. Compared with many laser-cut stent studies, the LVIS device had a higher aneurysm complete occlusion rate at follow-up coupled with low complication rates. However, this study was our initial experience with LVIS, larger patient numbers, and longer follow-up will be needed to fully assess the long-term efficacy of LVIS in treating intracranial aneurysms.
The study, which covers the period between 2014 and 2018, was carried out in the city of Naberezhnye Chelny, Republic of Tatarstan, Russia. The aim of the study was to examine the biochemical ...response of maple trees growing in the anthropogenic environments. Leaf samples from 600 trees (Acer platanoides L. and Acer negundo L.) were collected at monthly intervals from June through August. Sampling was performed early in the morning (11 a.m.) in the middle of the month. The study offers statistical data on the tannin content, determined via permanganometry; the ascorbic acid concentration, found via titration with 2.6-dichlorophenolindophenol; the ascorbate oxidase activity determined by absorbance at 265 nm; and the polyphenol oxidase activity, found by the spectrophotometric method. Relatively higher ascorbate oxidase activity was detected in August among ash-leaved Acer platanoides L. and Acer negundo L. in areas with strong anthropogenic impact. Due to increased air pollution, maple trees were found to exhibit an increase of polyphenol oxidase activities. The condensed tannin content in Norway maple trees dropped over time: by 1.24 in July (avenue); by 0.94 (buffer area) and 0.76 (avenue) in August. The condensed tannin content in the ash-leaved maple trees also decreased: by 0.69 (buffer area) and 0.22 (avenue) in July; by 0.37 (buffer area) and 0.61(avenue) in August.
There are many known functions and regulatory mechanisms of the key metabolite adenosine in animal and plant cells, but little is known about its metabolism and how growth conditions affect the ...adenosine content in microalgae. In this study, we examined the influence of salinity, light intensity, temperature and nitrate concentration on growth rates and adenosine content in batch cultures of the diatom Phaeodactylum tricornutum Bohlin. A strong negative correlation was found between growth rate, as a function of both salinity and light, and adenosine content. Growth rate as a function of temperature and nitrate did not correlate with adenosine content. In silico and empirical tests revealed an apparent lack of adenosine degradation in P. tricornutum and from these analyses, we suggest that adenosine content reflects the balance between its formation from S-adenosyl-
L
-homocysteine (SAH) hydrolysis and AMP dephosphorylation, and its consumption by phosphorylation to AMP. The high and varying adenosine levels in the growth and stationary phases could be an important physiological adaptation to support the cellular energy charge for the cells to survive in highly fluctuating environments. Adenosine content in microalgae could also be an important parameter to describe physiological responses to different growth conditions when optimizing growth conditions to increase valuable microalgal products, such as lipids for feed in aquaculture or as biofuels.
BACKGROUND AND PURPOSE—Cardiac injury persistence after aneurysmal subarachnoid hemorrhage (aSAH) is not well described. We hypothesized that post-aSAH cardiac injury, detected by elevated cardiac ...troponin I (cTnI), is related to aSAH severity and associated with electrocardiographic and structural echocardiographic abnormalities that are persistent.
METHODS—Prospective longitudinal study was conducted of patients with aSAH with Fisher grade ≥2 and/or Hunt/Hess grade ≥3. Serum cTnI was collected on Days 1 to 5; cohort dichotomized into peak cTnI ≥0.3 ng/mL (elevated) or cTnI <0.3 ng/mL. Relationships among cTnI and aSAH severity, 12-lead electrocardiography early (≤4 days) and late (≥7 days), Holter monitoring on Days 1 to 5, and transthoracic echocardiogram (left ventricular ejection fraction and regional wall motion abnormalities) early (Days 0 to 5) and late (Days 5 to 12) were evaluated.
RESULTS—Of 204 subjects, 31% had cTnI ≥0.3 ng/mL. cTnI ≥0.3 ng/mL was incrementally related to aSAH severity by admission symptoms (Hunt/Hess P=0.001) and blood load (Fisher P=0.028). More patients with cTnI ≥0.3 ng/mL had prolonged QTc on early (63% versus 30%, P<0.0001) and late electrocardiography (24% versus 7%, P=0.024). On Holter monitoring, more patients with cTnI ≥0.3 ng/mL had ventricular tachycardia/fibrillation (22% versus 9%, P=0.018) but not atrial fibrillation/flutter (P=0.241). Cardiac troponin I ≥0.3 ng/mL was associated with both early ejection fraction <50% (44% versus 5%, P<0.0001) and regional wall motion abnormalities (44% versus 4%, P<0.0001). Regional wall motion abnormalities predominated in basal and midventricular segments and persisted to some degree in 73% of patients affected, whereas ejection fraction <50% persisted in 59% of patients affected.
CONCLUSIONS—Cardiac injury is incrementally worse with increasing aSAH severity and associated with persistent QTc prolongation and ventricular arrhythmias. Regional wall motion abnormalities and depressed ejection fraction persist to some degree in the majority of those affected.
Subarachnoid hemorrhage (SAH) is a type of hemorrhagic stroke with a high short-term mortality rate which leads to cognitive impairments that reduce the quality of life of the majority of patients. ...The miRNA-143/145 cluster is highly expressed in vascular smooth muscle cells (VSMC) and has been shown to be necessary for differentiation and function, as well as an important determinant for phenotypic modulation/switching of VSMCs in response to vascular injury. We aimed to determine whether miRNA-143 and miRNA-145 are important regulators of phenotypical changes of VSMCs in relation to SAH, as well as establishing their physiological role in the cerebral vasculature. We applied quantitative PCR to study ischemia-induced alterations in the expression of miRNA-143 and miRNA-145, for rat cerebral vasculature, in an ex vivo organ culture model and an in vivo SAH model. To determine the physiological importance, we did myograph studies on basilar and femoral arteries from miRNA-143/145 knockout mice. miRNA-143 and miRNA-145 are not upregulated in the vasculature following our SAH model, despite the upregulation of miR-145 in the organ culture model. Regarding physiological function, miRNA-143 and miRNA-145 are very important for general contractility in cerebral vessels in response to depolarization, angiotensin II, and endothelin-1. Applying an anti-miRNA targeting approach in SAH does not seem to be a feasible approach because miRNA-143 and miRNA-145 are not upregulated following SAH. The knockout mouse data suggest that targeting miRNA-143 and miRNA-145 would lead to a general reduced contractility of the cerebral vasculature and unwanted dedifferentiation of VSMCs.
Subarachnoid Hemorrhage and Headache Ogunlaja, Oyindamola Ikepo; Cowan, Robert
Current pain and headache reports,
06/2019, Letnik:
23, Številka:
6
Journal Article
Recenzirano
Purpose for Review
Subarachnoid hemorrhage is a serious and life-threatening medical condition which commonly presents with an acute headache. Unfortunately, it remains frequently misdiagnosed at ...initial presentation with dire consequences in terms of patient morbidity and mortality. The goal of this paper is to review salient features in the clinical history, as well as recently developed clinical decision rules, which can help determine which patients warrant further investigation for subarachnoid hemorrhage when the initial presentation is that of an acute headache.
Recent Findings
A recent prospective observational study showed that occipital location, stabbing quality, presence of meningism, and onset of headache during exertion were characteristics in the clinical history that can distinguish the headache of SAH from other causes. The Ottawa headache rule is a clinical decision tool which was developed to help identify patients presenting to the ED with acute non-traumatic headache who require investigation to rule out subarachnoid hemorrhage. Using this tool, it is recommended that patients who meet any one of the following 6 criteria are investigated further: Onset greater than or equal to 40 years, presence of neck pain or stiffness, witnessed loss of consciousness, onset during exertion, thunder clap headache (pain peaking within 1 s), or limited neck flexion on exam.
Summary
An informed and thoughtful approach that takes into account the timing, presentation, risk factors, and resources, as discussed here, should help distinguish between the patient that warrants further evaluation and intervention for SAH and one who does not. The Ottawa SAH rule is a useful clinical decision tool for young inexperienced clinicians in order to avoid missed diagnoses. However, its clinical value is limited by its low specificity. Clinical decision tools with higher specificity are needed.
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