Bax

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  • 文章类型: Journal Article
    糖尿病是一种持续的代谢病症,其特征在于由于胰岛素分泌或功能受损而导致的血糖水平升高。天然抗糖尿病药物的寻找由于其潜在的有效性和安全性而受到关注。SessuviumPortulacastrum,沿海植物,传统上用于各种医疗目的。本研究通过分析其对参与碳水化合物代谢的关键酶的抑制作用,并探索其与关键靶蛋白的分子相互作用,研究了马齿轮轴水提物的抗糖尿病潜力。制备了SessuviumMosulacastrum的水提物并用于体外分析。提取物对α-淀粉酶和α-葡萄糖苷酶的活性降低,对葡萄糖吸收和餐后高血糖至关重要,被评估。分子对接技术用于探索提取物中活性化合物与糖尿病相关蛋白之间的潜在相互作用。包括BAX,GSK3β,和CADH。该研究表明,SessuviumMouracastrum水提物对α-淀粉酶和α-葡萄糖苷酶均具有显着的抑制作用,表明其降低葡萄糖吸收和餐后高血糖的潜力。此外,分子对接分析显示提取物中的活性化合物与参与糖尿病相关途径的关键蛋白之间的强结合相互作用,即凋亡途径,糖原合成,和细胞粘附。这项研究的发现强调了Sessuvium马齿轮轴水提取物的有前途的抗糖尿病潜力。即将进行的研究应该注意从天然来源中分离和表征对这些抗糖尿病疗法产生影响的活性化合物。
    Diabetes mellitus is a persistent metabolic condition marked by elevated blood glucose levels due to compromised insulin secretion or functionality. The search for natural antidiabetic agents has gained attention due to their potential effectiveness and safety profiles. Sessuvium portulacastrum, a coastal plant, has been traditionally used for various medicinal purposes. This study investigates the antidiabetic potential of Sessuvium portulacastrum aqueous extract by analyzing its inhibitory effects on key enzymes involved in carbohydrate metabolism and exploring its molecular interactions with critical target proteins. The aqueous extract of Sessuvium portulacastrum was prepared and used for in vitro analysis. The reduced activity of the extract against α-amylase and α-glucosidase enzymes, crucial in glucose absorption and postprandial hyperglycemia, was assessed. Molecular docking techniques were employed to explore the potential interactions between active compounds in the extract and diabetes-related proteins, including BAX, GSK3β, and CADH. The study revealed significant inhibition of both alpha-amylase and alpha-glucosidase enzymes by Sessuvium portulacastrum aqueous extract, indicating its potential to reduce glucose absorption and postprandial hyperglycemia. Moreover, the molecular docking analysis demonstrated strong binding interactions between active compounds in the extract and key proteins involved in diabetes-related pathways, namely apoptotic pathways, glycogen synthesis, and cell adhesion. The findings of this study highlight the promising antidiabetic potential of Sessuvium portulacastrum aqueous extract. Upcoming research should get an attention on isolating and characterizing the active compounds responsible for these effects on antidiabetic therapies from natural sources.
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  • 文章类型: Journal Article
    本研究旨在探讨男性睾丸实质细胞对化疗药物的敏感性,以及化疗前和化疗后(紫杉醇(PTX))对结构和功能变化的保护作用和机制。为此,将大鼠随机分为四组(对照组=G1,PTX5mg/kg=G2;PTXNoni10mg/kg=G3,PTXNoni20mg/kg=G4)。连续4周腹腔注射PTX,以5mg/kg的剂量给予除对照组外的所有组。然后在10(G3)和20(G4)mg/kg组中口服(灌胃)诺尼14天。生化分析,实时聚合酶链反应(PCR),进行了免疫组织化学分析。根据我们的结果,PTX组大鼠总氧化应激(TOS)和丙二醛(MDA)明显升高(P<0.01)。超氧化物歧化酶(SOD)酶活性和总抗氧化能力(TAC)水平均降低(P<0.01)。用PTX+Noni20mg/kg处理的大鼠的变化是值得注意的。PTXNoni20mg/kg治疗后,PTX的IL1-β(白细胞介素1β)和TNFα(肿瘤坏死因子α)水平降低(P<0.01)(分别为9%和5%)。此外,Noni通过减少caspase-3表达恢复睾丸组织病理学结构,并显着(61%)抑制氧化DNA损伤和凋亡(通过调节Bax(bcl-2样蛋白4)/Bcl-2(B细胞淋巴瘤基因2)比例)。总之,Noni减少了细胞凋亡,并急剧改变了Caspase8和Bax/Bcl-2水平。此外,它大大减少氧化损伤,可用于睾丸变性。
    The current study aimed to investigate the sensitivity of male testis parenchyma cells to chemotherapy agents and the protective effects and mechanisms of Morinda citrifolia (Noni) administration against structural and functional changes before and after chemotherapy (Paclitaxel (PTX)). For this purpose, rats were randomly assigned into four groups (Control = G1, PTX 5 mg/kg = G2; PTX + Noni 10 mg/kg = G3, PTX + Noni 20 mg/kg = G4). PTX was injected intraperitoneally for 4 consecutive weeks, at a dose of 5 mg/kg to all groups except the control group. Then noni was administrated in 10 (G3) and 20 (G4) mg/kg groups orally (gavage) for 14 days. Biochemical analyses, Real-Time Polymerase Chain Reaction (PCR), and immunohistochemical analyses were performed. According to our results, Total Oxidative Stress (TOS) and Malondialdehyde (MDA) were significantly increased in the PTX group (P < 0.01). Superoxide Dismutase (SOD) enzyme activity and Total Antioxidant Capacity (TAC) levels were decreased (P < 0.01). The changes in the rats treated with PTX + Noni 20 mg/kg were noteworthy. The increased levels of IL1-β (Interleukin 1 beta) and TNFα (tumor necrosis factor-alpha) with PTX were down-regulated after treatment with PTX + Noni 20 mg/kg (P < 0.01) (9 % and 5 % respectively). In addition, Noni restored the testicular histopathological structure by reducing caspase-3 expression and significantly (61 %) suppressed oxidative DNA damage and apoptosis (by regulating the Bax (bcl-2-like protein 4)/Bcl-2 (B-cell lymphoma gene-2) ratio). In conclusion, Noni reduced cellular apoptosis and drastically changed Caspase 8 and Bax/Bcl-2 levels. Furthermore, it considerably decreases oxidative damage and can be used in testicular degeneration.
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  • 文章类型: Journal Article
    在癌症治疗的情况下,传统疗法经常与特异性和抗性斗争。因此,研究基于纳米技术的癌症治疗新方法非常重要。已知氧化锌纳米颗粒(ZnONPs)通过诱导氧化应激表现出抗癌特性,凋亡,和细胞周期停滞。甲氨蝶呤(MTX)已知的抗叶酸盐显示出对叶酸受体(FR)的特异性,并中断细胞的健康功能。这项研究提出了使用先前表征的生物相容性甲氨蝶呤负载氧化锌纳米颗粒(MTX-ZnONPs)作为针对乳腺癌细胞系的双重作用治疗策略,MCF-7(MTX敏感)和MDA-MB-231(MTX抗性)。为了深入阐明MTX-ZnONPs的细胞毒性机制,进行了体外研究。体外试验,包括细胞周期分析,凋亡测定,进行蛋白质印迹分析以研究蛋白质表达。这些检测的结果,进一步支持MTX-ZnONPs在MCF-7和MDA-MB-231细胞系中分别显示凋亡和坏死活性的抗癌活性。确定动物LD50的体内急性口服毒性研究显示,高达550mg/kg动物体重,没有毒性和死亡率的迹象。LD50值显著高于合成纳米系统的预期治疗水平和安全性。该研究得出结论,MTX-ZnONPs显示出针对乳腺癌细胞的抗癌潜力,为克服耐药性提供了有希望的策略。
    Traditional therapies often struggle with specificity and resistance in case of cancer treatments. It is therefore important to investigate new approaches for cancer treatment based on nanotechnology. Zinc oxide nanoparticles (ZnONPs) are known to exhibit anti-cancer properties by inducing oxidative stress, apoptosis, and cell cycle arrest. Methotrexate (MTX) a known anti-folate shows specificity to folate receptors and interrupts healthy functioning of cells. This study proposes the use of previously characterized biocompatible Methotrexate loaded Zinc oxide nanoparticles (MTX-ZnONPs) as a dual action therapeutic strategy against breast cancer cell lines, MCF-7 (MTX-sensitive) and MDA-MB-231 (MTX-resistant). To elucidate the cytotoxicity mechanism of MTX-ZnONPs an in depthIn vitrostudy was carried out.In vitroassays, including cell cycle analysis, apoptosis assay, and western blot analysis to study the protein expression were performed. Results of these assays, further supported the anti-cancer activity of MTX-ZnONPs showing apoptotic and necrotic activity in MCF-7 and MDA-MB-231 cell line respectively.In vivoacute oral toxicity study to identify the LD50in animals revealed no signs of toxicity and mortality up to 550 mg kg-1body weight of animal, significantly higher LD50values than anticipated therapeutic levels and safety of the synthesized nanosystem. The study concludes that MTX-ZnONPs exhibit anti-cancer potential against breast cancer cells offering a promising strategy for overcoming resistance.
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  • 文章类型: Journal Article
    脑胰岛素抵抗与代谢综合征(MetS)有关。低碳水化合物,高脂肪(LCHF)饮食已被提出具有保护作用。因此,本研究旨在探讨MetS大鼠模型的脑胰岛素抵抗标志物及LCHF饮食的保护作用。四组雄性年夜鼠(10只/组)造就。第I组(对照)饲喂常规饮食。II-IV组注射地塞米松(DEX)诱导MetS。第二组接受定期饮食的DEX。第III组(DEX+LCHF)的比率被喂食低碳水化合物,高脂肪饮食,而IV组(DEX+HCLF)大鼠被喂食高碳水化合物,低脂(HCLF)饮食。在为期四周的实验结束时,计算HOMA-IR。此外,脑S-100B基因表达分析,BDNF,TNF-α,IGF-1,IGF-1R,IGFBP-2,IGFBP-5,Bax,进行Bcl-2和caspase-3。在DEX组中,大鼠的HOMA-IR显著增加,IGF-1,IGF-1R,IGFBP-2,IGFBP-5,BDNF,和Bcl2,伴随着S100B的上升,TNF-α,Bax,和caspase-3。LCHF饮食组对所有参数显示出明显相反的效果。总之,MetS与BDNF的大脑基因表达失调有关,S100B,和TNF-α和受干扰的IGF-1信号,细胞凋亡和神经炎症增加。此外,LCHF饮食显示出保护作用,所研究的生化和分子参数的保存证明了这一点。
    Brain insulin resistance is linked to metabolic syndrome (MetS). A low-carbohydrate, high-fat (LCHF) diet has been proposed to have a protective effect. Therefore, this study aimed to investigate the brain insulin resistance markers in a rat animal model of MetS and the protective effects of the LCHF diet. Four groups of male rats (10/group) were created. Group I (Control) was fed a regular diet. Groups II-IV were injected with dexamethasone (DEX) to induce MetS. Group II received DEX with a regular diet. Group III (DEX + LCHF) rates were fed a low-carbohydrate, high-fat diet, while Group IV (DEX + HCLF) rats were fed a high-carbohydrate, low-fat (HCLF) diet. At the end of the four-week experiment, HOMA-IR was calculated. Moreover, cerebral gene expression analysis of S-100B, BDNF, TNF-α, IGF-1, IGF-1 R, IGFBP-2, IGFBP-5, Bax, Bcl-2, and caspase-3 was carried out. In the DEX group, rats showed a significant increase in the HOMA-IR and a decrease in the gene expression of IGF-1, IGF-1 R, IGFBP-2, IGFBP-5, BDNF, and Bcl2, with a concomitant rise in S100B, TNF-α, Bax, and caspase-3. The LCHF diet group showed a significantly opposite effect on all parameters. In conclusion, MetS is associated with dysregulated cerebral gene expression of BDNF, S100B, and TNF-α and disturbed IGF-1 signaling, with increased apoptosis and neuroinflammation. Moreover, the LCHF diet showed a protective effect, as evidenced by preservation of the investigated biochemical and molecular parameters.
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  • 文章类型: Journal Article
    食用色素甲氨酚黄(Myl)对几种身体系统有害。据报道,月见草油(EPO)具有抗炎和抗氧化性质。本工作研究了Myl对大鼠肝脏结构和功能的影响,并评估了EPO的保护作用。将40只成年雄性大鼠分为四组:对照组,EPO(5g/kg/天),Myl(200mg/kg/天),和EPO-Myl基团。Myl显著增加肝酶,糖基化终产物(AGE),氧化应激参数,促炎细胞因子,核因子κB(NF-κB),和诱导型一氧化氮合酶(iNOS)。肝脏血管扩张并充血,周围有细胞浸润,并与纤维化有关。肝细胞是空泡的并且具有暗核。iNOS的免疫组织化学表达,胶质纤维酸性蛋白(GFAP),Bax显著升高。超微结构,肝细胞显示脂滴,核周空间变宽的不规则凝聚核,扩张的RER,线粒体有破损的cr,和多个液泡。肝细胞之间可见扩张的充血正弦和胶原纤维束。有趣的是,在与EPO和Myl共同给药的大鼠中,这些改变不太明显。总之,EPO具有抗炎和抗氧化活性,可以保护肝脏免受Myl的毒性作用。
    The food color metanil yellow (Myl) is hazardous to several body systems. Evening primrose oil (EPO) was reported to have anti-inflammatory and anti-oxidant properties. The present work investigated the impact of Myl on the hepatic structure and function of rats and evaluated the protective effect of EPO. Forty adult male rats were divided into four groups: control, EPO (5 g/kg/day), Myl (200 mg/kg/day), and EPO- Myl group. Myl significantly increased liver enzymes, advanced glycation end products (AGE), oxidative stress parameters, pro-inflammatory cytokines, nuclear factor kappa B (NF-κB), and inducible nitric oxide synthase (iNOS). Blood vessels in the liver were dilated and congested, with cellular infiltration around them and associated with fibrosis. The hepatocytes were vacuolated and had dark nuclei. The immunohistochemical expression of iNOS, glial fibrillary acidic protein (GFAP), and Bax was significantly elevated. Ultrastructurally, the hepatocytes showed lipid droplets, irregular condensed nuclei with widened perinuclear space, dilated rER, mitochondria with destructed cristae, and multiple vacuoles. Dilated congested blood sinusoids and collagen fiber bundles were seen between hepatocytes. Interestingly, these alterations were less pronounced in rats co-administrated with EPO and Myl. In conclusion, EPO can protect liver against the toxic effects of Myl due to its anti-inflammatory and anti-oxidant activities.
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  • 文章类型: Journal Article
    乳铁蛋白(Lf)是一种具有多种生物活性的糖蛋白,包括抗菌,抗病毒,抗癌,等。在本研究中,使用实时PCR技术评估了不同浓度的纳米包裹的乳铁蛋白(NE-Lf)对胃癌细胞系AGS中Bax和Bak基因表达的影响,并通过生物信息学研究了NE-Lf对生长细胞的细胞毒性以及这两个基因及其蛋白在凋亡途径中的分子机制以及乳铁蛋白与这些蛋白之间的关系。在生存能力测试中,结果表明,在两种浓度下,纳米乳铁蛋白的生长抑制作用均大于乳铁蛋白,壳聚糖对细胞无抑制作用。在浓度为250和500μg的NE-Lf中,Bax基因表达增加了2.3和5倍,分别,Bak基因表达分别增加1.94和1.74倍,分别。统计学分析表明,两种基因处理间的基因表达量存在显著差异(P<0.05)。使用对接获得乳铁蛋白与Bax和Bak蛋白的结合模式。根据对接结果,乳铁蛋白的N叶区域与Bax蛋白相互作用,以及Bak蛋白。结果表明,乳铁蛋白,除了作用于基因,与Bax和Bak蛋白相互作用。由于两种蛋白质是细胞凋亡的组成部分,乳铁蛋白可以通过这种方式诱导细胞凋亡。
    lactoferrin (Lf) is a glycoprotein with various biological activities, including antibacterial, antiviral, anti-cancer, etc. In the present study, the effect of different concentrations of nano-encapsulated lactoferrin (NE-Lf) on the expression of Bax and Bak genes was evaluated in stomach cancer cell line AGS using real-time PCR technique and cytotoxicity of NE-Lf on the growth cells as well as the molecular mechanism of these two genes and their proteins in the apoptosis pathway and the relationship between lactoferrin and these proteins were investigated by bioinformatics studies. In the viability test, the results showed that the growth inhibition effect of nano-lactoferrin was greater than lactoferrin in both concentrations, and chitosan had no inhibitory effect on the cells. In concentrations of 250 and 500 µg of NE-Lf Bax gene expression increased by 2.3 and 5 times, respectively, and Bak gene expression increased by 1.94 and 1.74 times, respectively. Statistical analysis showed that there is a significant difference in the relative amount of gene expression between the treatments in both genes (P < 0.05). The binding mode of lactoferrin with Bax and Bak proteins was obtained using docking. According to docking results, the N-lobe region of lactoferrin interacts with the Bax protein, as well as the Bak protein. The results show that lactoferrin, in addition to acting on the gene, interacts with Bax and Bak proteins. Since two proteins are components of apoptosis, lactoferrin can induce apoptosis in this way.
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  • 文章类型: Journal Article
    众所周知,除了高血压得到控制之外,全身麻醉导致自发性高血压患者的脑出血。文学已经充斥着这场辩论,而且仍然,高血压对脑出血后脑部病理变化的影响存在滞后性。他们仍然没有得到很好的认可。此外,这是麻醉复苏阶段,已知在脑出血期间对身体有不利影响。由于对上述事实的认识滞后,本研究的目的是评价异丙酚复合舒芬太尼对Bax表达的影响,自发性高血压脑出血大鼠的BCL-2和caspase-3基因。初始样品由54只雄性Wrister大鼠组成。所有年龄为7至8个月,体重为500±100gm。所有大鼠在登记前由研究者评估。将总共0.5mg/kg氯胺酮和随后10mg/kg静脉内注射的丙泊酚引入每只纳入的大鼠。随后是总共1μG/kg/h的舒芬太尼,其被给予患有脑出血的大鼠(n=27)。其余27只正常大鼠均未给予舒芬太尼。血流动力学参数,生物化学,westernblot检测,进行免疫组织化学染色。对结果进行统计学分析。脑出血大鼠的心率较高(p<0.0001)。脑出血大鼠的细胞因子水平高于正常大鼠(均p<0.01)。Bacl-2(p<0.01),bax(p<0.01),据报道,脑出血大鼠的caspase-3表达受到干扰(p<0.01)。脑出血大鼠尿量减少(p<0.01)。结论自发性高血压大鼠脑出血,丙泊酚复合舒芬太尼靶控静脉麻醉可提高血流动力学参数和细胞因子水平。此外,脑出血干扰bacl-2,bax,和caspase-3表达。
    It is a well-known fact that general anesthesia leads to cerebral hemorrhage in patients with spontaneous hypertension apart of the fact that the hypertension is under control. The literature is already flooded with this debate, and still, there appears a lag regarding the effects of high blood pressure on pathological changes in the brain after cerebral hemorrhage. They are still not well recognized. Furthermore, it is the stage of anesthesia resuscitation which is known to have adverse effects on the body during cerebral hemorrhage. Owing to the lag of knowledge in the above said facts, the objectives of this study were to evaluate the effects of propofol combined with sufentanil on the expression of Bax, BCL-2, and caspase-3 genes in spontaneously hypertensive rats suffering with cerebral hemorrhage. The initial sample consisted of 54 male Wrister rats. All were of the age of 7 to 8 months with a weight of 500 ± 100 gm. All the rats were evaluated by the investigators before enrolment. A total of 0.5 mg/kg ketamine followed by a 10 mg/kg intravenous injection of propofol was introduced to each included rat. It was followed by a total of 1 μG/kg/h of sufentanil which was administered to rats who had cerebral hemorrhage (n = 27). The rest 27 normal rats were not administered with sufentanil. Hemodynamic parameters, biochemistry, western blot assay, and immunohistochemical staining were performed. The results were statistically analyzed. Heart rate (p < 0.0001) was higher for rats who had a cerebral hemorrhage. The cytokine levels of rats who had cerebral hemorrhage were higher than those of normal rats (p < 0.01 for all). Bacl-2 (p < 0.01), bax (p < 0.01), and caspase-3 (p < 0.01) expressions were reported to be disturbed in rats who had cerebral hemorrhage. Urine volume was reduced in rats who had cerebral hemorrhage (p < 0.01). It was concluded that in spontaneously hypertensive rats with cerebral hemorrhage, propofol combined with sufentanil target-controlled intravenous anesthesia increased hemodynamic parameters and cytokine levels. Furthermore, cerebral hemorrhage disturbs the expression of bacl-2, Bax, and caspase-3 expressions.
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  • 文章类型: Journal Article
    牛γ疱疹病毒4型(BoHV-4)显示子宫内膜的向性,导致上皮细胞和基质细胞死亡。尽管它的基因组中有抗凋亡基因,基于永生化细胞系的实验表明BoHV-4通过凋亡诱导细胞死亡。在本研究中,我们评估了BoHV-4的复制,牛子宫内膜原代培养细胞(BEC)和MadinDarby牛肾(MDBK)细胞系中的促凋亡(Bax)和抗凋亡(Bcl-2)线粒体基因表达和染色质凝聚。结果表明,BoHV-4在BEC细胞中的复制优先于MDBK细胞系,病毒滴度高,与病毒的向性一致。在BEC细胞中,染色质凝聚与感染后期的病毒动力学值一致,伴随着凋亡线粒体蛋白的mRNA水平平衡。因此,在这些细胞中,在病毒增殖的早期阶段通过抑制细胞凋亡来增强病毒传播,允许病毒后代的完整生产,然后,晚期细胞凋亡的诱导将允许邻近细胞感染。在MDBK细胞中,复制动力学与Bcl-2的上调一致,这表明MDBK中的生产性感染与病毒的裂解期或感染后期的另一种细胞死亡途径(可能是自噬机制)有关。结果与核形态学的研究一致,其中随着时间的推移观察到恒定的染色质凝聚。显然,在上述研究的细胞系中观察到的记录的BoHV-4凋亡应答在来自原代培养物的细胞中无效。这项研究中提供的数据表明,BoHV-4可以诱导BEC细胞凋亡,而没有线粒体途径的主导作用。需要进一步的研究来详细表征所评估的原代细胞培养物中BoHV-4感染中涉及的程序性细胞死亡途径。
    Bovine gammaherpesvirus type 4 (BoHV-4) shows tropism for the endometrium, in which it causes the death of epithelial and stroma cells. Despite having anti-apoptotic genes in its genome, experiments based on immortalized cell lines have shown that BoHV-4 induces cell death by apoptosis. In the present study, we evaluated BoHV-4 replication, pro-apoptotic (Bax) and anti-apoptotic (Bcl-2) mitochondrial genes expression and chromatin condensation in bovine endometrium primary culture cells (BEC) and in the Madin Darby bovine kidney (MDBK) cell line. Results showed that BoHV-4 has a preference for replication in BEC cells over the MDBK cell line, demonstrated by the high viral titer that is consistent with the tropism of the virus. In BEC cells, chromatin condensation was consistent with the values of viral kinetics at the late stage of infection, accompanied with a balance in the mRNA levels of apoptotic mitochondrial proteins. As a consequence, in those cells viral transmission would be enhanced by inhibiting apoptosis in the early stage of virus proliferation, allowing the complete production of viral progeny, and then, the induction of apoptosis in late stages would allow neighboring cells infection. In MDBK cells replication kinetics was coincident with the up-regulation of Bcl-2, which suggests that the productive infection in MDBK is associated with a lytic phase of the virus or another cell death pathway (probably autophagy mechanism) at the late stage of infection. The results agree with the study of nuclear morphology, where a constant chromatin condensation was observed over time. It is clear that the documented BoHV-4 apoptotic responses observed in the cell lines studied above are not valid in cells from primary cultures. The data presented in this study suggest that BoHV-4 could induce apoptosis in BEC cells without a leading role of the mitochondria pathway. Further studies will be necessary to characterize in detail the programmed cell death pathways involved in BoHV-4 infection in the primary cell cultures evaluated.
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  • 文章类型: Journal Article
    UNASSIGNED: This study aimed to investigate the expression of autophagy-related factors microtubule-associated protein l light chain 3 (LC3) and the apoptosis-related factors BCL2-associated X protein (Bax) and B cell lymphoma-2 (Bcl-2) in the periodontal tissue of experimental diabetic rats. These data were used to explore the potential mechanism in diabetes-induced periodontal tissue lesions.
    UNASSIGNED: A total of 32 Sprague Dawley (SD) rats were randomly assigned into diabetes (group D, n = 16) and control groups (group N, n = 16). The diabetic group was induced by intraperitoneal injection of 1% streptozotocin (STZ, 60 mg/kg) and the control group was injected with citrate buffer (0.1mol/L). Rats were sacrificed after 4 and 8 weeks of feeding and collected as D1, N1 groups and D2, N2 groups, and the maxilla were retained for analysis. The changes in periodontal tissue structure were observed by hematoxylin-eosin (HE) staining. The expression and distribution of LC3, Bax and Bcl-2 in the periodontium of the rats was detected by immunohistochemical (SP) staining.
    UNASSIGNED: Diabetic rats showed several changes compared to control animals including sparse alveolar bone trabecular structure, loss of the lamina dura and absorption of the local alveolar bone. The positive expression level of LC3 in the gingival epithelial, periodontal ligament and alveolar bone of group D1 was significantly higher than in the N1, N2 and D2 groups (P < 0.05). The level of Bax expression in the group D2 rats was significantly higher than those in the N1, N2 and D1 groups (P < 0.05), while the positive degree of Bcl-2 was significantly lower than those of other groups (P < 0.001). LC3 was negatively correlated with Bax and was irrelevant with Bcl-2; Bcl-2 was not correlated with Bax.
    UNASSIGNED: The expression of LC3, Bax and Bcl-2 changes in the periodontal tissue of diabetic rats may indicate that autophagy and apoptotic are involved in the process of periodontal tissue damage in diabetic rats. These changes may be one of the mechanisms of periodontal tissue lesions.
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