scholarly journals Dexmedetomidine attenuates haemorrhage-induced thalamic pain by inhibiting the TLR4/NF-κB/ERK1/2 pathway in mice

Author(s):  
Tianfeng Huang ◽  
Yong Li ◽  
Wenqing Hu ◽  
Dapeng Yu ◽  
Ju Gao ◽  
...  

Abstract Background Thalamic pain, a neuropathic pain syndrome, frequently occurs after stroke. This research aimed to investigate the effect of dexmedetomidine (DEX) on thalamic pain. Methods The cellular localization of the TLR4 protein was determined by immunostaining. The expression of Iba1, GFAP and protein associated with the TLR4/NF-κB/ERK1/2 pathway was measured by Western blotting. Continuous pain hypersensitivity was evaluated by behavioural tests. The results were analysed by one-way ANOVA, two-way ANOVA and Tukey’s post hoc test. Results The results demonstrated that DEX obviously alleviated thalamic pain induced by haemorrhage on the ipsilateral side and delayed the development of pain hypersensitivity. Furthermore, the expression levels of Iba1, GFAP and proteins associated with the TLR4/NF-κB/ERK1/2 signalling pathway were greatly increased in mice with thalamic pain, but these effects were reversed by DEX. Conclusion Our findings suggest that DEX alleviates the inflammatory response during thalamic pain through the TLR4/NF-κB/ERK1/2 signalling pathway and might be a potential therapeutic agent for thalamic pain.

2005 ◽  
Vol 102 (Special_Supplement) ◽  
pp. 38-41 ◽  
Author(s):  
Motohiro Hayashi ◽  
Takaomi Taira ◽  
Taku Ochiai ◽  
Mikhail Chernov ◽  
Yuichi Takasu ◽  
...  

Object. Although reports in the literature indicate that thalamic pain syndrome can be controlled with chemical hypophysectomy, this procedure is associated with transient diabetes insipidus. It was considered reasonable to attempt gamma knife surgery (GKS) to the pituitary gland to control thalamic pain. Methods. Inclusion criteria in this study were poststroke thalamic pain, failure of all other treatments, intolerance to general anesthetic, and the main complaint of pain and not numbness. Seventeen patients met these criteria and were treated with GKS to the pituitary. The target was the pituitary gland together with the border between the pituitary stalk and the gland. The maximum dose was 140 to 180 Gy. All patients were followed for more than 3 months. Conclusions. An initial significant pain reduction was observed in 13 (76.5%) of 17 patients. Some patients experienced pain reduction within 48 hours of treatment. Persistent pain relief for more than 1 year was observed in five (38.5%) of 13 patients. Rapid recurrence of pain in fewer than 3 months was observed in four (30.8%) of 13 patients. The only complication was transient diabetes insipidus in one patient. It would seem that GKS of the pituitary might have a role to play in thalamic pain arising after a stroke.


2000 ◽  
Vol 10 (4) ◽  
pp. 413-415 ◽  
Author(s):  
Luc M Beauchesne ◽  
Angela Mailis ◽  
Gary D Webb

AbstractInjury to the spinal cord injury with paraplegia, is a rare complication of surgical repair of aortic coarctation recognized immediately post-operatively. We present the case of a 41-year-old male undergoing surgery for restenosis at the site of a repair. Intra-operatively, he suffered inadvertent injury to an intercostal arterial branch during isolation of the aorta below the graft. Over the following months, he developed unusual symptoms involving the legs and genitourinary tract which, only after extensive investigations, were attributed to ischemic damage to the spinal cord related to the surgery. We suspect that similar syndromes reflecting injury to the spinal cord injury may be unrecognized following surgical repair of coarctation.


2021 ◽  
Vol LIII (2) ◽  
pp. 94-100
Author(s):  
Olga A. Bondarenko ◽  
Gaspar V. Gavrilov ◽  
Vadim A. Padurets ◽  
Roman V. Kasich

Purpose of the work. The article is devoted to the first experience of epidural stimulation in the Khanty-Mansiysk Autonomous Okrug at the budgetary institution Surgut Clinical Trauma Hospital. Clinical examples are presented for two main indications for the application of this technique (disease of the operated spine, a consequence of spinal cord injury in combination with chronic neuropathic pain syndrome). Research methods. An assessment of the intensity of pain syndrome was given according to a visual analogue scale, the Pain Detect questionnaire; indicators of anxiety, depression on the HADS scale; quality of life according to the Oswestry questionnaire for a follow-up period of 6-12 months in patients with chronic epidural stimulation. Results. A positive assessment of the action during test neurostimulation was 63.3% (38 patients). Of the established permanent systems, a good result was achieved and persisted for 12 months or more in 96% (24 patients). It was necessary to change the stimulation parameters in 13% (3 patients). Revision of permanent systems was performed in 20% (5 patients), due to the progression of the degenerative-dystrophic process of the spine, damage and migration of system elements. Conclusions. Chronic epidural spinal cord stimulation has established itself as a personalized, highly effective, minimally invasive and safe method of treating chronic neuropathic pain syndromes. Multicomponent corrective action is of scientific interest and requires further study.


Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6753
Author(s):  
Ramona S. Oltramare ◽  
Reto Odermatt ◽  
Phoebe Burrer ◽  
Thomas Attin ◽  
Tobias T. Tauböck

The aim of this in vitro study was to investigate the degree of C=C double bond conversion of high-viscosity dimethacrylate- or ormocer-based bulk-fill composites as a function of measurement depth. Four bulk-fill composites (Tetric EvoCeram Bulk Fill, x-tra fil, SonicFill, and Bulk Ormocer) and the conventional nanohybrid composite Tetric EvoCeram were applied in standardized Class II cavities (n = 6 per group) and photoactivated for 20 s at 1350 mW/cm2. The degree of conversion of the composites was assessed using Fourier-transform infrared spectroscopy at seven measurement depths (0.15, 1, 2, 3, 4, 5, 6 mm). Data were analyzed using repeated measures ANOVA and one-way ANOVA with Bonferroni post-hoc tests (α = 0.05). The investigated bulk-fill composites showed at least 80% of their maximum degree of conversion (80% DCmax) up to a measuring depth of at least 4 mm. Tetric EvoCeram Bulk Fill and Bulk Ormocer achieved more than 80% DCmax up to a measuring depth of 5 mm, x-tra fil up to 6 mm. The conventional nanohybrid composite Tetric EvoCeram achieved more than 80% DCmax up to 3 mm. In contrast to the conventional composite, the investigated ormocer- and dimethacrylate-based bulk-fill composites can be photo-polymerized in thick layers of up to at least 4 mm with regard to their degree of C=C double bond conversion.


2018 ◽  
Vol 5 (10) ◽  
pp. 949-967 ◽  
Author(s):  
Daniel Silva Lula Leite ◽  
George Emmanuel Cavalcanti de Miranda

A urbanização nas zonas costeiras torna necessário avaliar o impacto antrópico sobre os ecossistemas associados. O objetivo deste trabalho foi analisar temporalmente a dinâmica de populações de macroalgas com potencial bioindicador, estabelecendo-as como ferramenta para avaliação da saúde ambiental. Foi amostrado o ambiente recifal intertidal da Praia de Formosa, no Município de Cabedelo, Estado da Paraíba, Nordeste do Brasil, durante intervalos trimestrais de agosto/2013 a novembro/2014. A variação temporal da frequência de ocorrência (F') das populações macrofitobênticas foi avaliada pela análise de variância (One-Way Anova) com teste Post-Hoc de Tukey. A influência das variáveis ambientais sobre F’ foi avaliada pela Correlação Linear de Pearson e pela PERMANOVA. A análise da qualidade ambiental e a proposta de biomonitoramento basearam-se no Grupo 1, formado por espécies perenes e/ou raras com maiores valores ao longo do Componente Principal 1 (CP1) da Análise de Componentes Principais (ACP), e Grupo 2, formado por espécies com comportamento errático com menores valores ao longo do CP1 da ACP. Foram encontradas 33 espécies macrofitobênticas. A frequência de ocorrência apresentou variação temporal, porém não influenciada pelo conjunto de variáveis ambientais. Phyllodictyon anastomosans, Gelidiella acerosa e Gelidium corneum compuseram o Grupo 1, com Dictyopteris delicatula, Canistrocarpus cervicornis e Hypnea spinella formando o Grupo 2. O Grupo 2 apresentou correlação positiva com a temperatura, alcançando as máximas frequências nos períodos mais quentes, mas esse fator isolado não é capaz de explicar a distribuição errática das espécies. A ocorrência de espécies bioindicadoras de eutrofização foi considerada natural, fato que, aliado à alta frequência de espécies bioindicadoras de qualidade ambiental, sugerem que o Recife de Formosa não sofre impactos antrópicos significativos. O desaparecimento de espécies perenes ou crescimento populacional significativo de espécie rara (Grupo 1), bem como a fuga do padrão temporal de frequência ou dominância do recife pelas espécies do Grupo 2, são indícios da ocorrência de impactos. Este trabalho fornece à gestão do Recife de Formosa uma eficiente ferramenta para avaliação do impacto urbano sobre a comunidade macrofitobêntica.


2018 ◽  
Author(s):  
Anita Dewi Moelyaningrum ◽  
Khoirul Ngibad ◽  
S.Pd Lilla Puji Lestari ◽  
Dessy Agustina Sari ◽  
Cahya Fajar Budi Hartanto ◽  
...  

This paper has been published in IOP Conf. Series: Journal of Physics: Conf. Ser1i2e3s415161748(9200‘1’8“)”012058 Lead (Pb) were toxic. Lead found in pipes, batteries, paint, dyes ceramic glaze, gasoline, and final waste disposal. The robusta coffee grouds residues had high carbon, nitrogen etc which can adsorb heavy metal.The purpose of this study is to analyze the robusta coffee grounds residues to adsorb the Pb in the water. The method of this research is a True Experimental using completely randomized design (CRD) method. There were control groups (C) and three treatments groups (T1; T2;T3; 5gram/ litre; 8gram/ litre; 10gram/ litre) with six repetitions. The robusta coffee ground residues were contacted for 2 hours.Total samples were24 samples which analyzed each parameter of the Pb with Atomic Adsorption Spectophotometry Analysis. The results showed that the more coffee ground residues that are exposed, increasingly turbid. The KS test showed that data were a normal distribution (sig=0,324). One way ANOVA test; Turkey post Hoc showed that there was sig difference between the control and treatment (F=4,326, Sig= 0,017). There were sig difference between control and treatment 2 and 3 (Sig=0,019; Sig=0,038). Robusta coffee grounds residues can reuse to adsorb the Pb pollution in the water. It can be a solution for treating the lead pollution in the water because of it easy to the application.


2021 ◽  
Vol 61 (2) ◽  
pp. 228-237
Author(s):  
Silvio Parničan ◽  
Pavol Peráček ◽  
Igor Tóth

Summary The variables impacting the efficiency of the offensive phase of the game in ice hockey may be determining factor for both the training process and game strategies. The research aimed to acquire and expand the knowledge about selected goal-scoring characteristics in the National Hockey League. A total of 511 even-strength goals were recorded in 129 randomly selected games in a regular-season 2020/2021 by indirect observation. Goals were differentiated by selected variable dimensions: location of the offensive team’s puck possession gain before scoring a goal, game situation preceding a goal, and the number of passes of the offensive team preceding a goal. Data were analyzed by performing a one–way ANOVA. Post hoc multiple comparisons were performed using the Tukey HSD test. The significance level of p ≤ 0.05 was used. Significant differences were found within all variable dimensions (p= 0.00001). In terms of the puck possession gain location, zone 1 (along the boards in the offensive zone) was the zone with the significantly highest mean score (p= 0.00305). Offensive zone play was significantly the game situation preceding most of the goals (p= 0.00000). The interval of the passes that preceded most of the recorded goals was the interval of 1 – 2 passes (p= 0.00000). Acquired results point out the dominance of particular variables and may help coaches to determine the content of the training process and game strategies. Based on the assumption of the realization of similar research in different environments in terms of the quality and age category, if the analogy would be found between the results of the present study and the results of potential studies, we can state the trends applicable to youth training.


Author(s):  
Anupam Bandyopadhyay ◽  
Pritha Chatterjee

Purpose: The inconsistencies and variations of creatine kinase level due to modifiable and non-modifiable factors were the basis of this study. The aim was to find out the relationships between creatinine and creatine kinase in the blood of somatotypes.    Methods: The 122 males, aged 10 to 20 years, were classified according to their somatotypes. Somatotypes were measured by the ISAK method. By standard laboratory methods, creatinine and creatine kinase estimate. The IBM SPSS version 24 is used for calculation. One way ANOVA followed by post hoc tests was performed to compare the variables among the three groups (p<0.05).   Results: Creatinine level in the blood insignificantly deferred among the three somatotypes. The significant differences (p<0.05) were found in creatine kinase level in the blood and creatinine/creatine kinase ratio among the three dominant Somatotypes. Creatine Kinase was significantly higher in Ectomorphs (212 U/L) than Endomorphs. Ectomorphs and mesomorphs have crossed normal creatine kinase levels (35 -175 U/L). The creatinine/creatine kinase ratio was found highest in endomorphs and lowest in the ectomorphs and significantly differed in three Somatotypes.   Conclusion: Creatinine production remains the same, indicating production of Creatinine is independent of specific body types. A significant higher Creatine Kinase level in Ectomorphs over Endomorphs showed fat content was not associated with it. Significant differences in Creatinine / Creatine Kinase ratio among Somatotypes suggested its relevance between cellular and morphological relationships and might uses as biomarkers. 


Author(s):  
Shashikala G. ◽  
Jyothi C. H. ◽  
Shashikala G. H.

Background: The study was undertaken to evaluate the learning and memory effect of lipid lowering drugs atorvastatin and simvastatin in alprazolam induced amnesic mice.Methods: The study was carried out on albino mice, divided into 4 groups of 6 animals each (either sex, 3-4 months of age, weight 25-30g). Amnesia was induced by administering Alprazolam (2mg/kg for 14 days) in all 4 groups from 1st to 14th day. In addition, group 2, 3 and 4 received Piracetam (400mg/kg), Atorvastatin (5mg/kg) and Simvastatin (5mg/kg) from 8th to 14th day respectively. The learning and memory of the animals was assessed by employing Elevated plus maze (EPM) and Step-down type passive avoidance (SDA) model.Results: Results were compared among the different groups using one way-ANOVA followed by post hoc Tukey’s test. The measured parameters were compared with standard drug Piracetam. In EPM model Atorvastatin (p<0.049) and Simvastatin (p<0.007) were comparable with standard drug Piracetam, whereas in SDA model only simvastatin group (p<0.001) showed significant result.Conclusions: In EPM model, both the statins showed significant improvement in learning and memory in alprazolam induced amnesic mice. However further studies are required to support these observations.


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