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1.
Small ; 20(13): e2307291, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37964162

RESUMO

Normally, only noncentrosymmetric structure of the materials can potentially be piezoelectric. Thus, it is limited in the field of piezoelectricity for the centrosymmetric structure of the material. In this work, the performance of piezoelectricity is successfully achieved from centrosymmetric SrFeO3- x by modulating oxygen vacancies, which have a surface piezoelectric potential up to 93 mV by using Kelvin-probe force microscopy (KPFM). Moreover, the piezoelectric effects of SrFeO3- x are also evaluated by piezoelectric catalytic effect and density functional theory calculations (DFT). The results show that the piezo-catalytic degradation of tetracycline reaches 96% after 75 min by ultrasonic mechanical vibration and the production of H2O2 by SrFeO3- x piezoelectric synthesis could reach 1821 µmol L-1. In addition, the DFT results indicate that the intrinsic effect of oxygen vacancies effectively promotes the adsorption and activation of O2 and H2O as well as intermediates and improves the piezoelectric catalytic activity. This work provides an effective basis for realizing the piezoelectricity of centrosymmetric materials and regulating the development of piezoelectric catalytic properties.

2.
Langmuir ; 39(19): 6885-6894, 2023 May 16.
Artigo em Inglês | MEDLINE | ID: mdl-37129447

RESUMO

Traditional SrTiO3 (STO) materials have high brittleness and poor deformation resistance. In this work, macroscopically flexible iron-doped SrTiO3 (SFTO) nanofibrous membranes were prepared by electrospinning and calcination, which can be easily isolated and can maintain integrity to recycle as photocatalysts. Moreover, the SFTO nanofibrous membranes showed enhanced photocatalytic performance under strong acids (pH = 2) and strong alkalis (pH = 12). The SFTO nanofibrous membranes increased the catalytic rate of Congo red (CR) dye by about 10 times in visible light. The mechanism of photocatalytic activity enhancement was discussed by the combined effects of hydroxyl radicals and superoxide radicals. The successful preparation of SFTO nanofibrous membranes has offered a simple and economical approach to photocatalysis as well as environmental remediation.

3.
Eur Radiol ; 33(6): 4052-4062, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36472694

RESUMO

OBJECTIVES: Preventing the expansion of perihematomal edema (PHE) represents a novel strategy for the improvement of neurological outcomes in intracerebral hemorrhage (ICH) patients. Our goal was to predict early and delayed PHE expansion using a machine learning approach. METHODS: We enrolled 550 patients with spontaneous ICH to study early PHE expansion, and 389 patients to study delayed expansion. Two imaging researchers rated the shape and density of hematoma in non-contrast computed tomography (NCCT). We trained a radiological machine learning (ML) model, a radiomics ML model, and a combined ML model, using data from radiomics, traditional imaging, and clinical indicators. We then validated these models on an independent dataset by using a nested 4-fold cross-validation approach. We compared models with respect to their predictive performance, which was assessed using the receiver operating characteristic curve. RESULTS: For both early and delayed PHE expansion, the combined ML model was most predictive (early/delayed AUC values were 0.840/0.705), followed by the radiomics ML model (0.799/0.663), the radiological ML model (0.779/0.631), and the imaging readers (reader 1: 0.668/0.565, reader 2: 0.700/0.617). CONCLUSION: We validated a machine learning approach with high interpretability for the prediction of early and delayed PHE expansion. This new technique may assist clinical practice for the management of neurocritical patients with ICH. KEY POINTS: • This is the first study to use artificial intelligence technology for the prediction of perihematomal edema expansion. • A combined machine learning model, trained on data from radiomics, clinical indicators, and imaging features associated with hematoma expansion, outperformed all other methods.


Assuntos
Inteligência Artificial , Edema Encefálico , Humanos , Edema Encefálico/diagnóstico por imagem , Edema Encefálico/etiologia , Hemorragia Cerebral/complicações , Hemorragia Cerebral/diagnóstico por imagem , Edema/diagnóstico por imagem , Edema/complicações , Aprendizado de Máquina , Hematoma/complicações , Hematoma/diagnóstico por imagem
4.
Br J Neurosurg ; 37(2): 170-176, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34870537

RESUMO

OBJECTIVE: To present a consecutive 20-year series of blood blister-like aneurysms (BBAs) to show that clip-on-wrapping with a Y-shaped autologous dura mater enables treatment of BBAs with a low complication rate and a satisfactory curative result. METHODS: A retrospective review was performed from patients with BBAs of the internal carotid artery (ICA) at the Affiliated Hospital of Qingdao University from 1999 to 2019. Diagnosis and treatment options were analyzed. Outcome was assessed using the modified Rankin scale (mRS). RESULTS: A total of 30 patients with BBAs of the ICA were included. Among these patients, 20 patients underwent microsurgical treatment (15 patients were treated by clip-on-wrapping with a Y-shaped autologous dura mater), the other 10 patients underwent endovascular treatment. All patients presented with subarachnoid hemorrhage (SAH). Four angiograms were initially negative. For all patients, intraoperative rupture occurred in five cases, but no postoperative aneurysm rupture occurred in this series. Three cases with clinical or radiologic cerebral infarctions were observed. The outcome was favorable in 26 patients. CONCLUSIONS: Clip-reinforced wrapping technique using a Y-shaped autologous dura mater may be an effective method for treating BBAs.


Assuntos
Aneurisma Roto , Aneurisma Intracraniano , Hemorragia Subaracnóidea , Humanos , Aneurisma Intracraniano/diagnóstico por imagem , Aneurisma Intracraniano/cirurgia , Aneurisma Intracraniano/complicações , Artéria Carótida Interna/diagnóstico por imagem , Artéria Carótida Interna/cirurgia , Hemorragia Subaracnóidea/cirurgia , Aneurisma Roto/diagnóstico por imagem , Aneurisma Roto/cirurgia , Aneurisma Roto/complicações , Estudos Retrospectivos , Angiografia Cerebral , Instrumentos Cirúrgicos/efeitos adversos , Dura-Máter/cirurgia , Resultado do Tratamento
5.
J Anim Physiol Anim Nutr (Berl) ; 107(6): 1381-1391, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37391896

RESUMO

This study aimed to evaluate the effects of in ovo injection of soy isoflavones (ISF) on hatchability, body weight, antioxidant status and intestinal development of newly hatched broiler chicks. One hundred and eighty fertile eggs were divided as follows: the control group, 3 mg/egg ISF (low dose) and 6 mg/egg ISF (high dose) on the 18th day of incubation. The results demonstrated that in ovo inclusion of 6 mg of ISF significantly increased hatchability and hatch weight. Both doses of ISF inclusion elevated the serum glutathione peroxidase and slightly decreased malondialdehyde compared to the control group. The high dose of ISF brings higher villus height and a higher villus/crypt ratio in chicks. Moreover, the mRNA levels of tumour necrosis factor- α and interferon-gamma in the spleen were significantly decreased. The ISF treatments showed an improvement in intestinal enzyme expression levels of sucrose isomaltase and mucin 2  as well as tight junction protein (TJ) mRNA expression of claudin-1 at high doses of ISF (p < 0.05) when compared with the other groups. Furthermore, the mRNA level of IGF-1 was increased in the high doses of ISF compared to the control. Overall, these findings indicate that in ovo administration of ISF on the 18th day of incubation enhances hatchability, antioxidant status and intestinal morphometrics in hatched chicks and modulates the expression of proinflammatory cytokines, TJs and insulin-like growth factor. In addition, the sustainability of antioxidants and other positive effects of ISF may increase chick viability and growth performance.


Assuntos
Galinhas , Isoflavonas , Animais , Antioxidantes/metabolismo , Óvulo , Cetonas/metabolismo , Isoflavonas/farmacologia , RNA Mensageiro/metabolismo
6.
Sensors (Basel) ; 22(19)2022 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-36236395

RESUMO

Driving is a ubiquitous activity that requires both motor skills and cognitive focus. These aspects become more problematic for some seniors, who have underlining medical conditions and tend to lose some of these capabilities. Therefore, driving can be used as a controlled environment for the frequent, non-intrusive monitoring of bio-physical and cognitive status within drivers. Such information can then be utilized for enhanced assistive vehicle controls and/or driver health monitoring. In this paper, we present a novel multi-modal smart steering sleeve (S3) system with an integrated sensing platform that can non-intrusively and continuously measure a driver's physiological signals, including electrodermal activity (EDA), electromyography (EMG), and hand pressure. The sensor suite was developed by combining low-cost interdigitated electrodes with a piezoresistive force sensor on a single, flexible polymer substrate. Comprehensive characterizations on the sensing modalities were performed with promising results demonstrated. The sweat-sensing unit (SSU) for EDA monitoring works under a 100 Hz alternative current (AC) source. The EMG signal acquired by the EMG-sensing unit (EMGSU) was amplified to within 5 V. The force-sensing unit (FSU) for hand pressure detection has a range of 25 N. This flexible sensor was mounted on an off-the-shelf steering wheel sleeve, making it an add-on system that can be installed on any existing vehicles for convenient and wide-coverage driver monitoring. A cloud-based communication scheme was developed for the ease of data collection and analysis. Sensing platform development, performance, and limitations, as well as other potential applications, are discussed in detail in this paper.


Assuntos
Condução de Veículo , Condução de Veículo/psicologia , Coleta de Dados , Monitorização Fisiológica , Suor
7.
Reprod Fertil Dev ; 32(10): 885-892, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32586418

RESUMO

High temperature can reduce testes function, leading to decreased testosterone secretion. Dietary l-arginine (l-Arg) supplementation improves the semen quality and libido of boars. The present study investigated whether l-Arg could enhance the production of testosterone in mice exposed to high ambient temperature. Twenty-four 6-week-old male ICR mice were randomly divided into three groups: a control group, a heat-treated (HT) group and a group subjected to heat treatment plus 2mg kg-1 l-Arg (HT+Arg). l-Arg was administered to mice by oral gavage for 18 consecutive days, after which the HT and HT+Arg groups were placed into an incubator at 40°C for 30min every day for 5 days. Serum testosterone and LH concentrations were significantly increased in the HT+Arg compared with HT group, as was catalase, total superoxide dismutase and glutathione peroxidase activity and the expression of steroidogenesis-related genes steroidogenic acute regulatory protein (Star), steroidogenic factor-1 (Sf1), 17ß-hydroxysteroid dehydrogenase 3 (Hsd17b3) and 17α-hydroxylase/17,20-lyase (Cyp17a1) in the testes. These results demonstrate that l-Arg can alleviate testosterone reductions in heat-treated mice by upregulating LH secretion, enhancing the antioxidant system and increasing the expression of testosterone synthesis-related genes.


Assuntos
Antioxidantes/metabolismo , Arginina/administração & dosagem , Temperatura Alta/efeitos adversos , Hormônio Luteinizante/sangue , Testículo/metabolismo , Testosterona/genética , Animais , Catalase/sangue , AMP Cíclico/análise , Expressão Gênica/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos ICR , Óxido Nítrico/análise , Superóxido Dismutase/sangue , Testículo/química , Testosterona/sangue
8.
J Therm Biol ; 84: 236-244, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31466759

RESUMO

The present study aimed to analyze the time- and temperature-responses of boar sperm and clarify the mechanism underlying the protective effects of L-arginine on heat-induced low sperm motility. Mature boar sperm was used to evaluate the effects of temperature, exposure time, L-arginine level and their interactions on sperm motility, respectively. Results showed increasing exposure time resulted in the decreased total motility and rate of rapid progressive sperm, and the increased rates of the immotile sperm and the sperm shaking in place at 38 and 39 °C, respectively (P < 0.05). L-arginine supplementation at the dose of 1.0 mM increased total motility and decreased rate of immotile sperm (P < 0.05). Heat at 39 °C decreased total motile and rate of rapid progressive sperm (P < 0.05), increased the level of sperm reactive oxygen species (ROS) (P < 0.05), reduced mitochondrial membrane potential (ΔΨm), ATP content and the activities of mitochondrial respiratory chain complexes (MRCC) ΙΙΙ and V (P < 0.05), which were attenuated by L-arginine supplementation. There were significant increases in the relative mRNA expression of nuclear respiratory factor 1 and peroxisome proliferator-activated receptor gamma coactivator-1 alpha in heat-exposed group without L-arginine supplementation. In conclusion, the rising temperatures impacted boar sperm motility in a time-dependent manner. In vitro addition of L-arginine to boar semen had a dose-dependent effect on sperm motility and sperm incubated with 1.0 mM L-arginine showed elevated motility. L-arginine supplementation can ameliorate heat-induced increase in ROS level and decreases in MRCC activities, which further maintain mitochondrial oxidative phosphorylation function, ATP synthesis and boar sperm motility.


Assuntos
Arginina/farmacologia , Temperatura Alta/efeitos adversos , Mitocôndrias/efeitos dos fármacos , Substâncias Protetoras/farmacologia , Motilidade dos Espermatozoides/efeitos dos fármacos , Animais , Masculino , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Mitocôndrias/fisiologia , Fator 1 Relacionado a NF-E2/genética , Fosforilação Oxidativa , Coativador 1-alfa do Receptor gama Ativado por Proliferador de Peroxissomo/genética , Espécies Reativas de Oxigênio/metabolismo , Espermatozoides/efeitos dos fármacos , Espermatozoides/fisiologia , Suínos
9.
J Therm Biol ; 81: 89-97, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30975428

RESUMO

To determine the effect of the valine-to-lysine (Val: Lys) ratio on the performance of sows and piglets in a hot, humid environment, eleven Large White × Landrace sows (parity 2 or 3) were selected and randomly assigned to 3 groups. The diets contained total dietary Val: Lys ratios of 0.72, 0.87, or 1.01:1. Sows were fed from d 29 prepartum to d 21 postpartum in a hot, humid environment (temperature: 22-31 ℃, relative humidity: 69-96%). The results showed that dietary valine improved the average daily feed intake (ADFI) of the sows in wk3 of the lactation and the average daily gain (ADG) of the piglets from day 7-14 after farrowing. Dietary valine increased the concentrations of lactose in colostrum and immunoglobulin M (IgM) in piglet serum. Additionally, dietary valine affected metabolite and metabolic hormone concentrations. The increase in the ratio of dietary Val: Lys decreased the blood urea nitrogen and increased serum glucose in the sows and increased serum albumin in the piglets. In addition, increasing dietary Val: Lys increased the serum concentration of estradiol-17ß in the sows. In conclusion, in a hot, humid environment, dietary valine could improve the performance of sows and piglets by increasing colostrum lactose and serum immunoglobulin concentration in piglets and by influencing serum glucose in sows.


Assuntos
Temperatura Alta , Lisina/administração & dosagem , Reprodução , Sus scrofa/fisiologia , Valina/administração & dosagem , Ração Animal , Fenômenos Fisiológicos da Nutrição Animal , Animais , Colostro/química , Ingestão de Alimentos , Estradiol/sangue , Feminino , Lactação , Gravidez , Sus scrofa/sangue
10.
J Therm Biol ; 71: 142-152, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29301683

RESUMO

Hyperthermia causes oxidative stress in testes, which triggers antioxidant signals including autophagy and nuclear factor erythroid 2-related factor 2 (Nrf2). However, their relationship in testes under oxidative stress is unclear. In this study, we conducted testes injection for autophagy alteration and heat exposure to reveal the interaction between autophagy and the Nrf2-antioxidant system. Male mice were injected once with normal saline as control (Cont group), autophagy inhibitor 3-methyladenine (3-MA group) or autophagy inducer rapamycin (Rapa group). Then, each group was divided into two parts: one received a 2-h 42°C heat treatment for eight days (HT groups), and the other was kept thermal neutral (NT groups). Heat-exposed mice showed significantly increased rectal, scrotal surface and body surface temperatures. Histology of the testes revealed many vacuoles inserted in the seminiferous tubules in the HT Cont group and two 3-MA groups. Ultrastructural changes in germ cells revealed autophagosomes in two 3-MA groups. Immunohistochemical detection of Nrf2 and p62/SQSTM1 proteins showed prominent expression in Leydig cells. Heat exposure increased Nrf2 protein and mRNA levels. 3-MA and Rapa testes injection also resulted in Nrf2 cytoplasm accumulation. Massive conversion of LC3 (microtubule-associated protein light chain 3)Ⅰ to LC3Ⅱ was detected in two 3-MA groups, accompanied by decreased ATG5 (autophagy related gene 5) mRNA levels in the HT 3-MA group. These results indicated autophagy alteration triggered the Nrf2 signaling pathway with consequences such that the autophagy inducer protected the testes and the autophagy inhibitor enhanced the detrimental effects caused by heat exposure.


Assuntos
Autofagia , Resposta ao Choque Térmico , Fator 2 Relacionado a NF-E2/metabolismo , Túbulos Seminíferos/metabolismo , Adenina/análogos & derivados , Adenina/farmacologia , Animais , Proteínas Relacionadas à Autofagia/genética , Proteínas Relacionadas à Autofagia/metabolismo , Temperatura Alta , Masculino , Camundongos , Fator 2 Relacionado a NF-E2/genética , Túbulos Seminíferos/efeitos dos fármacos , Proteína Sequestossoma-1/genética , Proteína Sequestossoma-1/metabolismo , Transdução de Sinais , Sirolimo/farmacologia
11.
Tumour Biol ; 39(7): 1010428317706203, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28705113

RESUMO

Growth hormone-secreting pituitary adenoma accounts for about 20% of the third most common intracranial neoplasm-pituitary adenomas-which makes up 15% of all intracranial tumors. The growth hormone-secreting pituitary adenoma invasion is a key risk factor associated with the operation results and highly correlated with the clinical prognosis. The epidermal growth factor-like domain multiple 7 protein, a unique 29 kDa secreted angiogenic factor, can result in pathologic angiogenesis and enhance the tumor migration and invasion. In this study, for the first time we found that epidermal growth factor-like domain multiple 7 protein expression was markedly higher in invasive growth hormone-secreting pituitary adenoma than non-invasive growth hormone-secreting pituitary adenoma. The tumor volume, histologic subtypes, invasiveness and recurrence of growth hormone-secreting pituitary adenoma were significantly associated with epidermal growth factor-like domain multiple 7 protein expression. Furthermore, we discovered that the histological classification methods of growth hormone-secreting pituitary adenoma according to electron microscopic examination and biological marker classification methods according to epidermal growth factor-like domain multiple 7 protein expression are more valuable in clinical application than the traditional classification methods based on Knosp and Hardy-Wilson grades. In summary, our results indicated epidermal growth factor-like domain multiple 7 protein participates in growth hormone-secreting pituitary adenoma proliferation and invasion regulation via Notch2/DLL3 signaling pathway. These findings raised the possibility that epidermal growth factor-like domain multiple 7 protein might serve as a useful biomarker to assess growth hormone-secreting pituitary adenoma invasion and prognosis or a potential therapeutic target for growth hormone-secreting pituitary adenoma treatment.


Assuntos
Biomarcadores Tumorais/genética , Neoplasias Encefálicas/genética , Fatores de Crescimento Endotelial/genética , Adenoma Hipofisário Secretor de Hormônio do Crescimento/genética , Peptídeos e Proteínas de Sinalização Intracelular/genética , Proteínas de Membrana/genética , Receptor Notch2/genética , Adulto , Neoplasias Encefálicas/patologia , Proteínas de Ligação ao Cálcio , Família de Proteínas EGF , Fatores de Crescimento Endotelial/biossíntese , Feminino , Regulação Neoplásica da Expressão Gênica , Adenoma Hipofisário Secretor de Hormônio do Crescimento/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica/genética , Invasividade Neoplásica/patologia , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/patologia , Prognóstico , Transdução de Sinais
12.
J Therm Biol ; 64: 58-66, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28166946

RESUMO

Hyperthermia in boars reduces growth performance and sperm production. Zinc is an essential trace element in animal nutrition. Here we investigate the effects of dietary zinc on epididymal structure and function in Bama miniature pigs treated with heat exposure and investigate approaches to improve the reproductive performance in summer. Male Bama miniature pigs (n=18; aged 6 months; bodyweight=10.79±0.06kg) were randomly allocated to 3 groups: control group (Control), heat treatment group (HT), and the diet-supplemented and heat treatment group (H+Zn). The Control and HT groups were fed with basal diet and the H+Zn group were fed with basal diet plus 1500mg/kg zinc daily. After being fed with these 2 different diets for 30 days, pigs in the HT and H+Zn groups were exposed to 5h of 40°C heat treatment for 8 days. Rectal temperature and jugular venous blood were collected 3h after onset of heat exposure on days 1, 4 and 8. Pigs were sacrificed after the termination of heat exposure. Heat treatment increased serum testosterone concentration on day 1 and 4 (P<0.01). In addition, the HT group displayed an increase in the clear cell count and a decrease in epithelium thickness in the caput epithelium (P<0.01, P<0.05), and dietary zinc protected the boars from these impairments (P<0.01, P=0.29). Evaluation of oxidative states showed that heat exposure increased the levels of malondialdehyde (MDA) and glutathione (GSH) in the epididymis (P<0.01, P<0.05), while dietary zinc reduced this elevation (P<0.01, P<0.01). Heat exposure enhanced the glucocorticoid receptor (GR) expression in the nuclei of principal and basal cells (P<0.01, P<0.01) while dietary zinc attenuated the GR immunoreactivity intensity (P<0.01, P<0.01). These results demonstrate that dietary zinc protects the epididymis from high temperature-induced impairment, alleviates oxidative stress, restores the integrity of the caput epithelium and decreases the stress response.


Assuntos
Epididimo/efeitos dos fármacos , Febre/prevenção & controle , Oligoelementos/farmacologia , Zinco/farmacologia , Animais , Suplementos Nutricionais , Epididimo/metabolismo , Epididimo/patologia , Febre/tratamento farmacológico , Glutationa/metabolismo , Masculino , Malondialdeído/metabolismo , Distribuição Aleatória , Receptores de Glucocorticoides/metabolismo , Suínos , Porco Miniatura , Testosterona/sangue , Oligoelementos/administração & dosagem , Oligoelementos/uso terapêutico , Zinco/administração & dosagem , Zinco/uso terapêutico
13.
J Craniofac Surg ; 25(5): 1773-5, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24999673

RESUMO

BACKGROUND: The objective of this article was to investigate the operation outcome, complications, and the patient's quality of life after surgical therapy for central gyrus region meningioma with epilepsy as the primary symptom. METHODS: All patients get at least 6 months of follow-up (range, 6-34 mo) after surgery. They underwent preoperative magnetic resonance imaging and video electroencephalography, and their clinical manifestations, imaging characteristics, microsurgical methods, and prognosis were retrospectively analyzed. RESULTS: The meningioma was located in the front and back of the central sulcus vein in 3 and 2 patients, respectively; in the compressed precentral gyrus and central sulcus vein in 3 patients; and in the precentral gyrus and postcentral gyrus each in 1 patient; beside the right sagittal sinus and invaded a thick draining vein on the brain surface in 1 patient and beside the right sagittal sinus and close to the precentral gyrus in 2 patients; invaded the superior sagittal sinus in 8 patients; crossed the cerebral falx and compressed cortex gyrus veins in 1 patient; invaded duramater and irritated skull hyperplasia in 3 patients; invaded duramater and its midline infiltrated into the superior sagittal sinus, was located behind the precentral gyrus, and enveloped the central sulcus vein. They were resected and classified by Simpson standards: 17 of the 26 patients had grade I, 6 patients had in grade II, and 3 patients had in grade III. CONCLUSIONS: Resection of central gyrus region meningioma by microsurgical technique avoids injury to the cerebral cortex, central sulcus vein, and other draining veins. Microsurgery improves the total resection rate, reduces recurrence rate, and lowers disability or death rate.


Assuntos
Neoplasias Encefálicas/cirurgia , Epilepsia/cirurgia , Lobo Frontal/cirurgia , Meningioma/cirurgia , Microcirurgia/métodos , Neoplasias Encefálicas/complicações , Neoplasias Encefálicas/patologia , Eletroencefalografia , Epilepsia/etiologia , Feminino , Seguimentos , Humanos , Imageamento por Ressonância Magnética , Masculino , Meningioma/complicações , Meningioma/patologia , Pessoa de Meia-Idade , Qualidade de Vida , Estudos Retrospectivos , Seio Sagital Superior/patologia
14.
J Anim Sci Technol ; 66(2): 295-309, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38628686

RESUMO

To investigate the effect of dietary supplementation with a fermented mixture of bean dregs and wheat bran (FBW) on sow performance. FBW was given to sows during late gestation and lactation; in total, 24 sows were randomly assigned to 4 groups (control diet; 3% FBW diet; 6% FBW diet; 9% FBW diet, n = 6). The weight ratio of bean dregs (wet) to wheat bran was 4:6. Sows were fed different diets from 85 d of gestation until weaning. The results showed that supplementation with FBW increased average daily feed intake (ADFI) during lactation (p < 0.05). FBW supplementation also increased litter weight and milk yield (p < 0.05). The contents of Escherichia coli in the feces of the treatment groups were significantly reduced by FBW supplementation (p < 0.01). FBW supplementation significantly improved the fecal morphology (p < 0.05), alleviating sows' constipation. In conclusion, FBW could increase the ADFI, improve lactation and piglet litter weight in sows and reduce the pathogenic bacterial content in sow feces and constipation.

15.
J Agric Food Chem ; 72(10): 5452-5462, 2024 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-38428036

RESUMO

Deoxynivalenol (DON) is a common mycotoxin that induces intestinal inflammation and oxidative damage in humans and animals. Given that lithocholic acid (LCA) has been suggested to inhibit intestinal inflammation, we aimed to investigate the protective effects of LCA on DON-exposed porcine intestinal epithelial IPI-2I cells and the underlying mechanisms. Indeed, LCA rescued DON-induced cell death in IPI-2I cells and reduced DON-stimulated inflammatory cytokine levels and oxidative stress. Importantly, the nuclear receptor PPARγ was identified as a key transcriptional factor involved in the DON-induced inflammation and oxidative stress processes in IPI-2I cells. The PPARγ function was found compromised, likely due to the hyperphosphorylation of the p38 and ERK signaling pathways. In contrast, the DON-induced inflammatory responses and oxidative stress were restrained by LCA via PPARγ-mediated reprogramming of the core inflammatory and antioxidant genes. Notably, the PPARγ-modulated transcriptional regulations could be attributed to the altered recruitments of coactivator SRC-1/3 and corepressor NCOR1/2, along with the modified histone marks H3K27ac and H3K18la. This study emphasizes the protective actions of LCA on DON-induced inflammatory damage and oxidative stress in intestinal epithelial cells via PPARγ-mediated epigenetically transcriptional reprogramming, including histone acetylation and lactylation.


Assuntos
Ácido Litocólico , PPAR gama , Tricotecenos , Humanos , Animais , Suínos , PPAR gama/metabolismo , Ácido Litocólico/efeitos adversos , Ácido Litocólico/metabolismo , Células Epiteliais/metabolismo , Estresse Oxidativo , Inflamação/metabolismo
16.
Theriogenology ; 212: 181-188, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37742481

RESUMO

Heat stress has been recognized as a major environmental factor affecting reproductive performance in livestock. However, the underlying mechanisms through which high temperature impairs testicular function remain elusive. This study aimed to investigate the effects of high temperature on morphology, oxidative stress levels, and testosterone synthesis in porcine testicular tissue in vitro. Testicular tissue samples from boars were subjected to different temperature conditions: control (37 °C) and heat stress (39 °C) for 4 h. The morphology of the testicular tissue was assessed using histological analysis, while oxidative stress levels were evaluated by measuring reactive oxygen species (ROS) production and antioxidant enzyme activities. Additionally, the expression of key enzymes involved in testosterone synthesis was examined using quantitative real-time polymerase chain reaction (qRT-PCR). Our results revealed that exposure to high temperatures significantly altered testicular tissue morphology. Histological analysis demonstrated degeneration and disorganization of seminiferous tubules, reduction in germ cell populations, and disruption of the blood-testis barrier. Moreover, high-temperature exposure significantly increased ROS production and decreased the activities of antioxidant enzymes (p < 0.05), indicating elevated oxidative stress levels in the testicular tissue. Furthermore, qRT-PCR analysis showed that high-temperature exposure suppressed the expression of key enzymes involved in testosterone synthesis, including steroidogenic acute regulatory protein and cytochrome P450 family 11 subfamilies A member 1. These findings suggest high temperature impairs testicular function by disrupting testicular morphology, inducing oxidative stress, and inhibiting testosterone synthesis. In conclusion, our study demonstrates that high-temperature exposure adversely affects morphology, oxidative stress levels, and testosterone synthesis in porcine testicular tissue. These findings provide insights into the potential mechanisms underlying heat-induced reproductive dysfunction in male pigs and highlight the importance of heat stress management in swine production to maintain optimal reproductive performance. Further investigations are warranted to elucidate the precise molecular pathways involved in the heat-induced testicular impairments observed in this study.

17.
Antioxidants (Basel) ; 12(1)2023 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-36671014

RESUMO

Deoxynivalenol (DON) is among the most prevalent contaminants in cereal crops and has been demonstrated to impair male spermatogenesis and induce oxidative stress, testicular apoptosis, and disruption of the blood-testis barrier (BTB). Lactoferrin (LF) is an iron-binding glycoprotein with multifunctions including anti-inflammation and antioxidation. Thus, this study aimed to investigate the effects of LF on the spermatogenesis and integrity of the BTB in DON-exposed mice. Thirty-two male mice were allotted to four groups for a 35-day feeding period: vehicle (basal diet), DON (12 mg/kg), LF (10 mg/d, p.o.), and DON + LF. The results showed that DON induced vacuolization of the spermatogenic epithelium, broke the adhesion junction between Sertoli cells and spermatids established by N-cadherin and induced testicular oxidative stress. LF administration restored sperm production, attenuated the DON-induced oxidative stress and reduced the breakages in adhesion junction. DON exposure enhanced the protein expression of occludin. Transcriptional profiling of the testis observed a disturbance in the expression profiles of cell adhesion and inflammatory response genes, and LF administration reversed these gene expressions. Furthermore, down-regulated signaling pathways, including the apical junction, TNFα signaling via NF-κB, and TGF-ß in the DON group were observed. These were restored by LF. Enrichment analysis between DON + LF group and vehicle also confirmed the absence of these pathways. These findings indicated that LF eliminated the DON-induced detriment to spermatogenesis and cell connections between Sertoli cells and spermatids via improving antioxidant capacity and modifying the inflammatory response and cell adhesion genes.

18.
Front Immunol ; 14: 1233652, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37497225

RESUMO

It has been for thousands of years in China known medicinal homologous foods that can be employed both as foods and medicines to benefit human and animal health. These edible herbal materials perform divert roles in the regulation of metabolic disorders, cancers, and immune-related diseases. Curcumin, the primary component derived from medicinal homologous foods like curcuma longa rhizome, is reported to play vital actions in organic activities, such as the numerous pharmacological functions including anti-oxidative stress, anti-inflammation and anti/pro-apoptosis in treating various diseases. However, the potential mechanisms of curcumin-derived modulation still need to be developed and attract more attention worldwide. Given that these signal pathways are enrolled in important bioactive reactions, we collected curcumin's last achievements predominantly on the immune-regulation signals with the underlying targetable strategies in the last 10 years. This mini-review will be helpful to accelerate curcumin and other extracts from medicinal homologous foods use in future human clinical applications.


Assuntos
Curcumina , Animais , Humanos , Curcumina/farmacologia , Curcumina/uso terapêutico , Inflamação/tratamento farmacológico , Estresse Oxidativo , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Apoptose
19.
Nutrients ; 15(22)2023 Nov 13.
Artigo em Inglês | MEDLINE | ID: mdl-38004166

RESUMO

Lipid metabolic diseases have substantial morbidity and mortality rates, posing a significant threat to human health. PPARα, a member of the peroxisome proliferator-activated receptors (PPARs), plays a crucial role in lipid metabolism and immune regulation. Recent studies have increasingly recognized the pivotal involvement of PPARα in diverse pathological conditions. This comprehensive review aims to elucidate the multifaceted role of PPARα in metabolic diseases including liver diseases, diabetes-related diseases, age-related diseases, and cancers, shedding light on the underlying molecular mechanisms and some regulatory effects of natural/synthetic ligands of PPARα. By summarizing the latest research findings on PPARα, we aim to provide a foundation for the possible therapeutic exploitation of PPARα in lipid metabolic diseases.


Assuntos
Transtornos do Metabolismo dos Lipídeos , Doenças Metabólicas , Humanos , PPAR alfa/metabolismo , Metabolismo dos Lipídeos , Receptores Citoplasmáticos e Nucleares/metabolismo , Doenças Metabólicas/tratamento farmacológico , Lipídeos
20.
Eur J Radiol ; 167: 111081, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37716178

RESUMO

PURPOSE: The prognosis following a hemorrhagic stroke is usually extremely poor. Rating scales have been developed to predict the outcomes of patients with intracerebral hemorrhage (ICH). To date, however, the prognostic prediction models have not included the full range of relevant imaging features. We constructed a clinic-imaging fusion model based on convolutional neural networks (CNN) to predict the short-term prognosis of ICH patients. MATERIALS AND METHODS: This was a multi-center retrospective study, which included 1990 patients with ICH. Two CNN-based deep learning models were constructed to predict the neurofunctional outcomes at discharge; these were validated using a nested 5-fold cross-validation approach. The models' predictive efficiency was compared with the original ICH scale and the ICH grading scale. Poor neurological outcome was defined as a Glasgow Outcome Scale (GOS) score of 1-3. RESULTS: The training and test sets included 1599 and 391 patients, respectively. For the test set, the clinic-imaging fusion model had the highest area under the curve (AUC = 0.903), followed by the imaging-based model (AUC = 0.886), the ICH scale (AUC = 0.777), and finally the ICH grading scale (AUC = 0.747). CONCLUSION: The CNN prognostic prediction model based on neuroimaging features was more effective than the ICH scales in predicting the neurological outcomes of ICH patients at discharge. The CNN model's predictive efficiency slightly improved when clinical data were included.


Assuntos
Acidente Vascular Cerebral Hemorrágico , Humanos , Inteligência Artificial , Prognóstico , Estudos Retrospectivos , Hemorragia Cerebral/diagnóstico por imagem
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