Effect of transcranial direct current stimulation on neurological injury markers and prognosis in patients with acute and severe carbon monoxide poisoning / 中华劳动卫生职业病杂志

Objective: To observe the effects of transcranial direct current stimulation (tDCS) on nerve injury markers and prognosis in patients with acute severe carbon monoxide poisoning (ASCOP) . Methods: In May 2021, 103 ASCOP patients were treated in the emergency department of Harrison International Peace Hospital of Hebei Medical University from November 2020 to January 2021. The patients were divided into two groups according to whether they received tDCS treatment. The control group (50 cases) were given oxygen therapy (hyperbaric oxygen and oxygen inhalation) , reducing cranial pressure, improving brain circulation and cell metabolism, removing oxygen free radicals and symptomatic support, and the observation group (53 cases) was treated with 2 weeks of tDCS intensive treatment on the basis of conventional treatment. All patients underwent at least 24 h bispectral index (BIS) monitoring, BIS value was recorded at the hour and the 24 h mean value was calculated. Neuron-specific enolase (NSE) and serum S100B calcium-binding protein (S100B) were detected after admission, 3 d, 7 d and discharge. Follow-up for 60 days, the incidence and time of onset of delayed encephalopathy (DEACMP) with acute carbon monoxide poisoning in the two groups were recorded. Results: The NSE and S100B proteins of ASCOP patients were significantly increased at admission, but there was no significant difference between the two groups (P=0.711, 0.326) . The NSE and S100B proteins were further increased at 3 and 7 days after admission. The increase in the observation group was slower than that in the control group, and the difference was statistically significant (P(3 d)=0.045, 0.032, P(7 d)=0.021, 0.000) ; After 14 days, it gradually decreased, but the observation group decreased rapidly compared with the control group, with a statistically significant difference (P=0.009, 0.025) . The 60 day follow-up results showed that the incidence of DEACMP in the observation group was 18.87% (10/53) , compared with 38.00% (19/50) in the control group (P=0.048) ; The time of DEACMP in the observation group[ (16.79±5.28) d] was later than that in the control group[ (22.30±5.42) d], and the difference was statistically significant (P=0.013) . Conclusion: The early administration of tDCS in ASCOP patients can prevent the production of NSE and S100B proteins, which are markers of nerve damage. and can improve the incidence and time of DEACMP.

Application value of BIS and S100β combined with Copeptin in patients with acute severe carbon monoxide poisoning / 中华劳动卫生职业病杂志

Objective: To explore the application value of bispectral index(BIS) , specific protein 100β(S100β) combined with Copeptinin patients with acute severe carbon monoxide poisoning (ASCMP). Methods: A total of 256 patients with acute carbon monoxide poisoning admitted to Hengshui People's Hospital from June 2018 to June 2020 were collected, and they were divided into 30 mild cases, 40 moderate cases and 186 severe cases according to the degree of poisoning. Among them, patients with severe carbon monoxide poisoning were divided into a poor prognosis group (20 cases) and a good prognosis group (166 cases) according to whether adverse events occurred. The changes of creatine kinase isoenzyme (CK-MB) , N-terminal precursor B-type brain natriuretic peptide (NT-proBNP) , BIS, S100β, and Copeptin in poisoned patients were measured. Logistic regression analysis and receiver operating characteristic (ROC) curve were used to evaluate the significance of relevant indicators for ASCMP patients. Results: Compared with the mild-to-moderate group, CK-MB, NT-proBNP, S100β, Copeptin increased, and BIS value decreased in the severe group (P< 0.05). 24 hours after admission, compared with the good prognosis group, CK-MB, NT-proBNP, S100β, Copeptin in the poor prognosis group increased, and the BIS value decreased (P<0.05). In the poor prognosis group, CK-MB, NT-proBNP, S100β, and Copeptin at 72 hours after admission were all lower than those at 24 hours after admission, and the BIS value was higher than that at 24 hours after admission (P<0.05). Logistic regression analysis showed that ASCMP patients with increased S100β, Copeptin, and decreased BIS values had an increased risk of adverse events (P<0.05). The ROC curve showed that the area under the curve of the combined detection of BIS, S100β and Copeptin was 0.859, which had a great predictive value for the prognosis of ASCMP patients. Conclusion: BIS, S100β combined with Copeptin detection is of great value for early assessment of ASCMP disease and prognosis prediction.

Dysfunctional eating behavior in fibromyalgia and its association with serum biomarkers of brain plasticity (BDNF and S100B): an exploratory study

ABSTRACT Objectives: To assess disordered eating, hunger and satiety perceptions in women with fibromyalgia (FM) compared to healthy controls (HC) and their association with biomarkers of brain plasticity (brain-derived neurotrophic factor (BDNF) and S100 calcium-binding protein B (S100B)). Subjects and methods: Cross-sectional exploratory study. The sample included FM (n = 20) and HC (n = 19), matched to age and waist perimeter. Dysfunctional eating was assessed through the Three Factor Eating Questionnaire and Eating Disorders Examination with a questionnaire. Hunger and satiety levels were rated by a Numerical Scale. Serum leptin, S100B and BDNF were analyzed. Results: The MANCOVA analysis showed that the mean of Emotional Eating rates was 30.65% higher in FM compared to HC ( p = 0.015). Eating, shape and weight concerns were 77.77%, 57.14% and 52.22% higher in FM ( p = <0.001) compared to HC, respectively. Moreover, the FM group reported higher scores for feeling of hunger "[5.2 (±2.9) vs. 4.8 (±2.0); p = 0.042] and lower scores for satiety [7.0 (±1.7) vs . 8.3 (±1.0); p = 0.038]. In the FM group, serum BDNF was negatively associated with hunger (r = - 0.52; p = 0.02), while S100B was positively associated with hunger scores (r = 0.463; p = 0.004). Conclusion: The present findings support the hypothesis that the association between FM and obesity can be mediated by a hedonistic pathway. Further research is needed.

Biomarcadores gliais da doença de Alzheimer / Glial biomarkers of Alzheimer's disease

Introdução: A neuroinflamação associada às células gliais é um elemento importante do processo patológico da doença de Alzheimer (DA). Este estudo apresenta uma revisão dos marcadores gliais quitinase 3-like 1 (YKL-40), do receptor desencadeado expresso nas células mieloides 2 (Triggering receptor expressed on myeloid cells 2 ­ TREM2), da proteína acídica fibrilar glial (GFAP) e da proteína B S100 ligante de cálcio (S100B). Métodos: Nesta revisão são analisados os marcadores gliais YKL-40, TREM2, GFAP e S100B presentes em sangue e/ou líquido cefalorraquidiano (LCR), a partir de estudos publicados até 2020 nos bancos de dados do PubMed, Medline e Periódicos Capes. Resultados: Foram recuperados 233 documentos, dentre os quais foram incluídos 60. Todos os marcadores se encontram aumentados na DA em LCR ­ YKL-40 e TREM2 solúvel (sTREM2), já na fase pré-clínica ­, e em sangue, e estão correlacionados ao declínio cognitivo. No entanto, nenhum dos marcadores analisados apresentou grande potencial para o diagnóstico diferencial. Além da proteína TREM2 solúvel no LCR, no sangue também se pode identificar alteração nos níveis do RNAm de TREM2. GFAP sanguíneo mostra ser o melhor em distinguir controles de pacientes com Alzheimer. Há evidências de um efeito protetivo da ativação glial em reação ao acúmulo amiloide. Conclusão: Os marcadores gliais no geral têm pouca utilidade para o diagnóstico diferencial, mas podem auxiliar no prognóstico e como biomarcadores inespecíficos para doenças neurodegenerativas. (AU)

Introduction: Glial cell-associated neuroinflammation is a driving force for the pathological process of Alzheimer's disease (AD). This study is a systematic review aimed to analyze the following glial markers: chitinase-3-like protein 1 (YKL-40), triggering receptor expressed on myeloid cells 2 (TREM2), glial fibrillary acidic protein (GFAP) and S100 calcium-binding protein B (S100B). Methods: The PubMed, MEDLINE and CAPES Journals databases were searched for studies published until 2020 that addressed blood and/or cerebrospinal fluid (CSF) levels of YKL-40, TREM2, GFAP and S100B. Results: A total of 233 articles were retrieved, of which 60 were included in this study. All CSF ­ YKL-40 and soluble TREM2 (sTREM2) in preclinical stage ­ and blood biomarker levels were elevated for AD and were correlated to cognitive decline. None of the analyzed biomarkers showed promising results for differential diagnosis. Besides CSF sTREM2 levels, blood TREM2 mRNA levels were also altered in AD. Blood GFAP levels seem to be the best option for distinguishing controls from AD patients.' There is evidence of a protective role of glial activation in amyloid accumulation. Conclusion: Glial markers in general are of little use for differential diagnosis but can assist in prognosis and as nonspecific biomarkers of neurodegenerative diseases. (AU)

S100B level and cognitive dysfunction after robotic-assisted laparoscopic radical prostatectomy procedures: a prospective observational study / Nível de S100B e disfunção cognitiva após prostatectomia radical laparoscópica assistida por robô: estudo observacional prospectivo

Abstract Background: The present study investigated the association between Postoperative Cognitive Dysfunction (POCD) and increased serum S100B level after Robotic-Assisted Laparoscopic Radical Prostatectomy (RALRP). Methods: The study included 82 consecutive patients who underwent RALRP. Serum S100B levels were determined preoperatively, after anesthesia induction, and at 30 minutes and 24 hours postoperatively. Cognitive function was assessed using neuropsychological testing preoperatively, and at 7 days and 3 months postoperatively. Results: Twenty four patients (29%) exhibited POCD 7 days after surgery, and 9 (11%) at 3 months after surgery. Serum S100B levels were significantly increased at postoperative 30 minutes and 24 hours in patients displaying POCD at postoperative 7 days (p = 0.0001 for both) and 3 months (p = 0.001 for both) compared to patients without POCD. Duration of anesthesia was also significantly longer in patients with POCD at 7 days and 3 months after surgery compared with patients without POCD (p = 0.012, p = 0.001, respectively), as was duration of Trendelenburg (p = 0.025, p = 0.002, respectively). Composite Z score in tests performed on day 7 were significantly correlated with duration of Trendelenburg and duration of anesthesia (p = 0.0001 for both). Conclusions: S100B increases after RALRP and this increase is associated with POCD development. Duration of Trendelenburg position and anesthesia contribute to the development of POCD. Trial Registry Number: Clinicaltrials.gov (N° NCT03018522).

Resumo Introdução: O presente estudo investigou a associação entre Disfunção Cognitiva Pós-Operatória (DCPO) e aumento do nível sérico de S100B após Prostatectomia Radical Laparoscópica Assistida por Robô (PRLAR). Métodos: O estudo incluiu 82 pacientes consecutivos submetidos à PRLAR. Os níveis séricos de S100B foram determinados: no pré-operatório, após indução anestésica, e aos 30 minutos e 24 horas do pós-operatório. A função cognitiva foi avaliada com testes neuropsicológicos no pré-operatório, no 7° dia pós-operatório (7 DPO) e aos 3 meses após a cirurgia (3 MPO). Resultados: Observamos 24 pacientes (29%) com DCPO no 7 DPO e 9 pacientes com DCPO (11%) após 3 meses da cirurgia. Quando comparados com os pacientes sem DCPO, os níveis séricos de S100B estavam significantemente aumentados aos 30 minutos e às 24 horas do pós-operatório nos pacientes que apresentaram DCPO no 7 DPO (p= 0,0001 para os dois momentos) e 3 meses após a cirurgia (p= 0,001 para os dois momentos) A duração anestésica também foi significantemente maior em pacientes com DCPO no 7 DPO e 3 MPO em comparação com pacientes sem DCPO (p= 0,012, p= 0,001, respectivamente), assim como a duração da posição de Trendelenburg (p= 0,025, p= 0,002, respectivamente). O escore Z composto nos testes realizados no 7 DPO foi significantemente correlacionado com a duração da posição de Trendelenburg e a duração da anestesia (p= 0,0001 para ambos). Conclusão: S100B aumenta após PRLAR e o aumento está associado ao desenvolvimento de DCPO. A duração anestésica e o tempo decorrido em posição de Trendelenburg contribuem para o desenvolvimento de DCPO. Número de registro do estudo: Clinicaltrials.gov (n° NCT03018522)

SBi4211 alleviates gp120-induced central nervous system injury / 南方医科大学学报

OBJECTIVE@#To explore the protective effect of SBi4211 (heptamidine), an inhibitor of S100B, against central nervous system injury induced by HIV-1 envelope protein gp120.@*METHODS@#In an @*RESULTS@#In the cell co-culture system, SBi4211 treatment significantly inhibited gp120-induced expression of S100B, RAGE and GFAP in U251 cells (@*CONCLUSIONS@#SBi4211 can protect neurons from gp120-induced neurotoxicity possibly by inhibiting the S100B/ RAGE-mediated signaling pathway.

Correlation between Depressive Behavior and Expressions of S100β and Brain-derived Neurotrophic Factor in Hippocampus and Frontal Cortex of Rats / 中国医学科学院学报

To investigate the association between chronic unpredictable mild stress (CUMS)-induced depressive-like behavior in rats and expressions of brain-derived neurotrophic factor (BDNF) and S100β in the hippocampal and prefrontal cortex. Rats were randomly assigned to three groups:saline control group,saline+CUMS group,and citalopram +CUMS group. CUMS was used for depression modeling in rats. Depressive-like behavior in rats were evaluated by open-field test,sucrose preference test,and novel object recognition test. S100β and BDNF expressions were tested by enzyme-linked immunosorbent assay. Rats in the saline+CUMS group had significantly lower score in sucrose preference [(52.48±13.14)%],basic motor tasks [(845.8±371.4)s],fine motor tasks [(565.6±211.9)s],and longer resting time [(282.6±11.8)s] compared to the control group [(84.30±6.15)% (=7.49,=0.000),(1239.1±281.6)s (=2.83,=0.008),(801.8±150.9)s (=3.05,=0.003),(268.2±12.8)s (=2.72,=0.001)]. Compared with the citalopram+CUMS group,rats from the saline+CUMS group also showed significantly lower results in sucrose preference [(80.55±11.31)%,=5.39,=0.000],basic motor tasks [(1156.4±314.7)s,=2.13,=0.031],and fine motor tasks [(736.1±150.0)s,=2.21,=0.008]. There were no significant differences in the expression of hippocampal and prefrontal BDNF between these two groups,but rats from the saline+CUMS group expressed significantly higher levels of S100β compared to rats from the citalopram+CUMS group [(13.22±2.23) ng/g (10.55±2.72) ng/g,=2.67,=0.014]. Pearson correlation analysis revealed that the expression of S100β was positively correlated with the expression of BDNF in the prefrontal cortex and hippocampus (=0.35,=0.034;=0.36,=0.034).The novel object recognition index was positively correlated with the expression of BDNF in the hippocampus(=0.38,=0.021),and the duration of fine-motor activities was negatively correlated with S100β in the prefrontal cortex (=-0.36,=0.037). Different types of depressive behaviors in rats induced by CUMS are associated with the selective expression of S100β and BDNF in two different brain cortex. S100β protein and BDNF may independently participate in the pathogenesis of depression.

Research advances in the biomarkers of brain damage in preterm infants / 中国当代儿科杂志

While the survival rate of preterm infants has continually increased with the development of perinatal and neonatal monitoring techniques, the incidence of brain injury in preterm infants has been increasing, resulting in varying degrees of cognitive impairment and movement disorders. Measuring the biomarkers of brain damage is an important means to diagnose brain injury. The biomarkers can be divided into neuroglial damage markers, neuronal damage markers and other markers according to the features of injured cells. The biomarkers widely used in clinical practice include S100B protein, myelin basic protein and neuron-specific enolase. Recent studies have newly discovered a collection of markers that can suggest potential brain injury in preterm infants, such as glial fibrillary acidic protein, neurofilament light chain protein, α-II spectrin breakdown products, chemokines, melatonin and urinary metabolomics. These biomarkers can contribute to the early diagnosis and treatment of preterm brain injury, essential for improving neural development and prognosis. This article reviews the latest research advances in the biomarkers of preterm brain injury, in order to provide evidence for the early diagnosis and treatment of this condition.

Chronic Food Antigen-specific IgG-mediated Hypersensitivity Reaction as A Risk Factor for Adolescent Depressive Disorder / 基因组蛋白质组与生物信息学报·英文版

Major depressive disorder (MDD) is the most common nonfatal disease burden worldwide. Systemic chronic low-grade inflammation has been reported to be associated with MDD progression by affecting monoaminergic and glutamatergic neurotransmission. However, whether various proinflammatory cytokines are abnormally elevated before the first episode of depression is still largely unclear. Here, we evaluated 184 adolescent patients who were experiencing their first episode of depressive disorder, and the same number of healthy individuals was included as controls. We tested the serum levels of high-sensitivity C-reactive protein (hs-CRP), tumor necrosis factor-α (TNF-α), IgE, 14 different types of food antigen-specific IgG, histamine, homocysteine, S100 calcium-binding protein B, and diamine oxidase. We were not able to find any significant differences in the serum levels of hs-CRP or TNF-α between the two groups. However, the histamine level of the patients (12.35 μM) was significantly higher than that of the controls (9.73 μM, P < 0.001, Mann-Whitney U test). Moreover, significantly higher serum food antigen-specific IgG positive rates were also found in the patient group. Furthermore, over 80% of patients exhibited prolonged food intolerance with elevated levels of serum histamine, leading to hyperpermeability of the blood-brain barrier, which has previously been implicated in the pathogenesis of MDD. Hence, prolonged high levels of serum histamine could be a risk factor for depressive disorders, and antihistamine release might represent a novel therapeutic strategy for depression treatment.

Efecto de la oxitocina en los niveles de malondialdehído, óxido nítrico y proteína s100b en el recién nacido / Effect of oxytocin on the levels of malondialdehyde, nitric oxide, and s100b protein in newborns

RESUMEN Objetivos. Evaluar los efectos de la administración de oxitocina en la conducción del parto en los niveles de malondialdehído (MDA), óxido nítrico (ON) y proteína S100B en el recién nacido. Material y Métodos. Se seleccionó a 80 gestantes a término sin patología obstétrica y fetal, formando dos grupos: Gestantes con parto normal y conducidas con oxitocina. Se extrajo sangre inmediatamente después del parto de la vena de cordón umbilical para medir MDA, ON y de la arteria para la proteína S100B. Se cuantificó la concentración de MDA y ON por métodos espectroscópicos y la proteína S100B por ELISA. Resultados. Se tuvo valores de 3,4 uMol/L y 3,6 uMol/L de MDA y 1,4 uMol/Ly 1,8 uMol/L de ON en el grupo conducido con oxitocina y control respectivamente sin diferencia significativa, los niveles de S100B fueron mayores en el grupo conducido con oxitocina, con una mediana de 1,36 μg/L comparado con el grupo de parto normal 1,11 μg/L (p=0,03). No hubo relación entre la dosis de oxitocina administrada y los niveles de MDA, ON y S100B. Conclusiones. No hay diferencia entre los niveles de MDA y ON entre las gestantes con parto normal y conducidas. Hay diferencia significativa en los niveles de proteína S100B en recién nacidos de parto con oxitocina. No hay relación entre la dosis de oxitocina y los niveles de estrés oxidativo y proteína S100B.

ABSTRACT Objectives. To assess the effects of the administration of oxytocin during labor management on the levels of malondialdehyde (MDA), nitric oxide (NO), and S100B protein in newborns. Materials and Methods. We selected 80 term pregnant women without obstetric and fetal pathology, forming two groups: pregnant women with normal delivery and pregnant women conducted with oxytocin. Blood was collected immediately after delivery from the umbilical cord vein to measure MDA, ON and from the artery for protein S100B. The concentration of MDA and ON was quantified by spectroscopic methods and the protein S100B by ELISA. Results. Values of 3.4 uMol/L and 3.6 uMol/L of MDA and 1.4 uMol/L and 1.8 uMol/L of NO were obtained in the oxytocin and control group, respectively, without significant difference; S100B levels were higher in the oxytocin managed group, with a median of 1.36 μg/L compared to the normal delivery group 1.11 μg/L (p=0.03). There was no relationship between the dose of oxytocin administered and the levels of MDA, ON, and S100B. Conclusions. There is no difference between MDA and NO levels between pregnant women undergoing a normal or managed birth. There is a significant difference in S100B protein levels in newborns born via an oxytocin-managed delivery. There is no relationship between oxytocin dose and levels of oxidative stress and S100B protein

Analyzing the neuropsychological characteristics and changes in serum markers of patients with chronic cerebral circulation insufficiency

Summary Objective: To investigate the neuropsychological characteristics and changes in CRP, S100B, MBP, HSP-7, and NSE in serum. Method: Sixty-six (66) patients treated in our hospital as CCCI group were chosen for our study, and 90 patients with depression were selected as the depression group. The patients in both groups were examined with CT perfusion, depression, anxiety and cognition evaluation. Their serum CRP, S100B, MBP, HSP-70 and NSE levels were detected. Neuropsychological and serum markers characteristics were compared. Results: The CBF and CBV in bilateral basal ganglia, frontal lobes, greater oval center, brain stem, and left and right regions of occipital lobes of the patients in CCCI group were significantly lower than in the depression group. The HAMD and HAMA scores of CCCI group patients were significantly lower than in the depression group; CCCI group performed better regarding attention, memory, abstract terms and delayed recall. CCCI also had significantly higher total scores than the depression group. Serum CRP, S100B, MBP, HSP-70 and NSE levels in CCCI group were significantly higher than in the depression group. The differences reach statistical significance (p<0.05). Conclusion: CCCI patients who are accompanied by minor depressive disorder have different degrees of cognitive impairment and experience a significant rise in serum CRP, S100B, MBP, HSP-70 and NSE.

Andrographolide protects mouse astrocytes against hypoxia injury by promoting autophagy and S100B expression

Andrographolide (ANDRO) has been studied for its immunomodulation, anti-inflammatory, and neuroprotection effects. Because brain hypoxia is the most common factor of secondary brain injury after traumatic brain injury, we studied the role and possible mechanism of ANDRO in this process using hypoxia-injured astrocytes. Mouse cortical astrocytes C8-D1A (astrocyte type I clone from C57/BL6 strains) were subjected to 3 and 21% of O2 for various times (0-12 h) to establish an astrocyte hypoxia injury model in vitro. After hypoxia and ANDRO administration, the changes in cell viability and apoptosis were assessed using CCK-8 and flow cytometry. Expression changes in apoptosis-related proteins, autophagy-related proteins, main factors of JNK pathway, ATG5, and S100B were determined by western blot. Hypoxia remarkably damaged C8-D1A cells evidenced by reduction of cell viability and induction of apoptosis. Hypoxia also induced autophagy and overproduction of S100B. ANDRO reduced cell apoptosis and promoted cell autophagy and S100B expression. After ANDRO administration, autophagy-related proteins, S-100B, JNK pathway proteins, and ATG5 were all upregulated, while autophagy-related proteins and s100b were downregulated when the jnk pathway was inhibited or ATG5 was knocked down. ANDRO conferred a survival advantage to hypoxia-injured astrocytes by reducing cell apoptosis and promoting autophagy and s100b expression. Furthermore, the promotion of autophagy and s100b expression by ANDRO was via activation of jnk pathway and regulation of ATG5.

Elevated plasma concentrations of S100 calcium-binding protein B and tumor necrosis factor alpha in children with autism spectrum disorders

Objective: To investigate plasma concentrations of S100B (a calcium-binding protein derived primarily from the glia) and inflammatory cytokines in children with autism and the relationship between S100B and cytokine concentrations. Methods: Plasma levels of S100B, tumor necrosis factor alpha (TNF-α), interferon gamma, interleukin (IL)-1β, IL-4, IL-6, IL-10, and IL-17A were measured in 40 unmedicated children with autism and 35 normally developing healthy children. The severity of autism was assessed using the Childhood Autism Rating Scale (CARS). Results: Concentrations of both S100B and TNF-α were higher in children with autism before and after adjusting for a priori-selected confounders (age, sex, and body mass index). S100B concentrations were higher in children with severe autism compared to children with mild-moderate autism. However, this association remained as a trend after adjusting for confounders. S100B concentrations correlated positively with TNF-α concentrations. Conclusion: Our findings showing an increase in peripheral concentrations of S100B and TNF-α provide limited support to the hypothesis about the roles of altered immune function and S100B in autism spectrum disorder (ASD). Studies of larger numbers of well-characterized individuals with ASD are needed to clarify the potential role of the immune system in the pathophysiology of this disorder.

Study of serum levels and skin expression of S100B protein in psoriasis

Abstract Background: S100B protein was reported to be elevated in psoriatic patients' serum, with no previous evaluation of its skin expression, in contrast to the extensively studied S100 protein. Objective: To evaluate the serum level and skin expression of S100B in psoriasis to assess its possible involvement in its pathogenesis. Methods: Serum level of S100B protein was estimated in 40 psoriatic patients of different clinical varieties and 10 healthy controls. S100B protein expression was assessed immunohistochemically in lesional and non-lesional skin of patients and in normal skin of controls. Relation to disease severity was also evaluated. Results: Serum level of S100B protein was significantly higher in psoriatic patients (0.15±0.03 µg/l) than in controls (0.03±0.007 µg/l) (P-value <0.001) with no significant correlation with PASI score. On comparing grades of S100B protein skin expression in lesional and non-lesional skin biopsies, a statistically significant difference was found (P=0.046) with higher percentage of strong S100B skin expression (60%) in non-lesional than in lesional (42%) skin. All the control biopsies showed negative expression. Study limitations: Relatively small sample size with a limited range of low PASI scores. Conclusion: This study points to a potential link between psoriasis and S100B protein with higher serum and skin expression in patients than in controls.

Grape juice increases the BDNF levels but not alter the S100B levels in hippocampus and frontal cortex from male Wistar Rats

ABSTRACT Several studies have shown that a high consumption of vegetables and fruits is consistently associated with a low risk of oxidative stress-induced diseases, which includes some degenerative diseases such as amyotrophic lateral sclerosis, Alzheimer and Parkinson. Therefore, the objective of this study is to verify the effects of conventional and organic grape juice in the modulation of the neurotrophic factor (BDNF) and astrocytic markers protein (S100B) in hippocampus and frontal cortex of Wistar rats. In this study, 24 male Wistar rats were divided into three groups. To the first one, it was given organic purple grape juice; to the second, conventional grape juice, while the last one received only saline. After 30 days, all rats were sacrificed and hippocampus and frontal cortex were dissected. The animals that received organic and conventional grape juice showed, in frontal cortex, an elevated BNDF levels in relation to saline group. However, S100B levels did not change. These results showed that grape juices are able to modulate important marker in brain tissue, and could be an important factor to prevent brain diseases.

Value of serum S100B protein and neuron-specific enolase levels in predicting the severity of hand, foot and mouth disease / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To study the value of serum S100B protein and neuron-specific enolase (NSE) levels in predicting the severity of hand, foot and mouth disease (HFMD).</p><p><b>METHODS</b>Ninety children with HFMD were classified into three groups: common type, severe type, and critical type (n=30 each). Thirty healthy children were randomly selected as the control group. ELISA was used to measure serum levels of S100B protein and NSE before and at 7 days after treatment. The receiver operating characteristic (ROC) curve was used to evaluate the prediction efficiency of S100B protein and NSE for the severity of HFMD.</p><p><b>RESULTS</b>The critical type group had significant increases in the serum levels of S100B protein and NSE compared with the other three groups (P<0.01). The severe type group had significant increases in serum levels of S100B protein and NSE compared with the common type and control groups (P<0.01). The critical type and severe type groups had significant reductions in serum levels of S100B protein and NSE after treatment (P<0.05). Serum S100B protein had the highest Youden value of 0.611 at the cut-off value of 0.445 μg/L, with a sensitivity of 61% and a specificity of 100%, in the prediction of serious HFMD (including severe type and critical type HFMD). Serum NSE had the highest Youden value of 0.533 at the cut-off value of 5.905 μg/L, with a sensitivity of 80% and a specificity of 73%, in the prediction of serious HFMD. Combined measurements of these two parameters had a sensitivity of 86% and a specificity of 73% and had the highest predictive value for serious HFMD.</p><p><b>CONCLUSIONS</b>The serum levels of S100B protein and NSE help to predict the severity and treatment outcomes of HFMD. Combined measurements of these two parameters has a higher predictive value for serious HFMD.</p>

Association between S100B gene polymorphisms and hand, foot and mouth disease caused by enterovirus 71 infection / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the association between rs9722 polymorphisms in the S100B gene and hand, foot and mouth disease (HFMD) caused by enterovirus 71.</p><p><b>METHODS</b>A total of 124 HFMD children with enterovirus 71 infection were enrolled as subjects, and 56 healthy children were enrolled as control group. The rs9722 polymorphisms in the S100B gene were detected for both groups, and the serum level of S100B protein was measured for 74 HFMD children.</p><p><b>RESULTS</b>The rs9722 locus of the S100B gene had three genotypes, CC, CT, and TT, and the genotype frequencies were in accordance with Hardy-Weinberg equilibrium. Compared with the control group, the HFMD group had significant increases in the frequencies of TT genotype and T allele (P<0.01). Children with severe HFMD caused by enterovirus 71 infection had significantly higher frequencies of TT genotype and T allele than those with moderate or mild HFMD (P<0.05). Compared with the cured patients, the patients with poor prognosis had significant increases in the frequencies of TT genotype and T allele in the rs9722 locus of the S100B gene (P<0.05). Among the 74 children with HFMD, the children with TT genotype had the highest serum level of S100B protein, and those with CC genotype had the lowest level (P<0.01).</p><p><b>CONCLUSIONS</b>T allele in the rs9722 locus of the S100B gene might be a risk factor for severe HFMD caused by enterovirus 71 infection.</p>

Negative correlation between serum S100B and leptin levels in schizophrenic patients during treatment with clozapine and risperidone: preliminary evidence

Recently, extensive efforts have been made to understand the rate of energy expenditure and the weight gain associated with atypical antipsychotic treatment, including identification of markers of obesity risk. In recent years, leptin, an adipocyte hormone, has gained significant interest in psychiatric disorders. S100B has been considered as a surrogate marker for astrocyte-specific damage in neurologic disorders. Also, S100B has been detected in adipose with concentration as high as nervous tissue as a second release source. In this study we evaluated the relationship between S100B and leptin in schizophrenic patients under treatment with clozapine and risperidone. This study included 19 patients meeting the DSM-IV-TR criteria for schizophrenia, having body mass index [BMI] of 16- 25 kg/m[2] and suffering schizophrenia for more than 3 years and from this study. Twenty five healthy controls were group matched for age and gender whose BMI was 16-25 kg/m[2]. Serum S100B and leptin levels and positive and negative symptom scale [PANSS] were assessed at admission and after six weeks. During the study, S100B showed a strong and negative correlation with leptin [r = -0.5, P = 0.01]. Also, there were negative correlation between serum S100B level and PANSS negative subscale after 6 weeks of treatment [r = -0.048, P = 0.8]. Positive correlation between leptin level and PANSS suggested a potential role for leptin which can mediate the link between antipsychotic induced weight gain and therapeutic response in schizophrenia

Effect of Dexmedetomidine Combined Electrical Stimulation on Coanitive Function of Patients Receiving Extracerebral Intervention / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To explore the effect of dexmedetomidine combined electrical stimulation on cognitive function of neurosurgical diseases patients treated by extracerebral intervention.</p><p><b>METHODS</b>Totally 122 patients with neurosurgical diseases who underwent selective intervention were randomly assigned to the observation group and the control group, 61 cases in each group. Patients in the control group recieved anesthesia by dexmedetomidine. Those in the observation group received electrical stimulation at Baihui (DU20), Yintang ( EX-HN3), and Neiguan (PC6) before dexmedetomidine anesthesia. The cognitive function of patients at preoperative day 1 and postoperative day 1 was respectively evaluated by Mini-Mental State Examinations (MMSE). Serum NSE, S-100β, IL-1β, IL-6, and TNF-α levels were detected in the two groups before intervention and immediately after intervention using ELISA.</p><p><b>RESULTS</b>MMSE scores of two groups were significantly reduced at post-intervention day 1, as compared with one day before intervention. MMSE score of the observation group at post-intervention day 1 was (23.15 ± 1.87) points, significantly higher than that of the control group [ (19.34 ± 1.64) points , (P < 0.05)]. The postoperative cognitive dysfunction (POCD) incidence rate of the observation group was 16.4% (10/61), significantly lower than that of the control group [39.3% (24/61); P < 0.05]. Compared with before intervention, NSE and S-100β protein levels, IL-1β, IL-6 and α-TNF levels of the two groups increased (P < 0.05). Post-intervention NSE and S-100β protein levels, IL-1β, IL-6 and α-TNF levels were significantly lower in the observation group than in the control group (P < 0.05).</p><p><b>CONCLUSION</b>Dexmedetomidine combied electrical stimulation could effectively prevent the occurrence of postoperative cognition, and reduce levels of NSA, S-100β, IL-1β, IL-6 and TNF-α.</p>