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Experimental and computational chemical studies on the cationic furanylnicotinamidines as novel corrosion inhibitors in aqueous solutions

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Chinese Journal of Chemical Engineering 2020年第2期28卷 477-491页

作者： Abdelaziz S.Fouda Mohamed A.Ismail Rabab M.Abou-shahba walaa a.husien Esraa S.EL-Habab Ashraf S.Abousalem Department of Chemistry Faculty of ScienceEl-Mansoura UniversityEl-Mansoura 35516Egypt Department of Chemistry Faculty of ScienceAl-Azhar UniversityEgypt Quality Control Laboratory Operation DepartmentJOTUNEgypt

The corrosion inhibition action of three newly synthesized furanylnicotinamidine derivatives namely: 6-[5-{4(dimethylamino)phenyl}furan-2-yl]nicotinamidine(MA-1256), 6-[5-(4-chlorophenyl)furan-2-yl]nicotinamidine(MA-1266), and 6-[5-{4-(dimethylamino)phenyl}furan-2-yl]nicotinonitrile(MA-1250) on carbon steel(C-steel) was investigated in 1.0 mol·L-1 HCl solution by weight loss(WL), potentiodynamic polarization(PP), electrochemical impedance spectroscopy(EIS), and electrochemical frequency modulation(EFM)techniques. Morphological analysis was performed on the uninhibited and inhibited C-steel using atomic force microscope(AFM) and Infrared Spectroscopy(ATR-IR) methods. The effect of temperature was studied and discussed. Inspection of experimental results revealed that the inhibition efficiency(IE) increases with the incremental addition of inhibitors and with elevating the temperature of the acid media. The adsorption of furanylnicotinamidine derivatives on C-steel follows Temkin’s isotherm. PP studies indicated that the investigated compounds act as mixed-type inhibitors and showed that p-dimethylaminophenyl furanylnicotinamidine derivative(MA-1256) was the most efficient inhibitor among the other studied derivatives with IE reached(95%)at 21 × 10-6 mol·L-1. MA-1266 is highly soluble in aqueous solution and has non-toxicity profile with LC50 N 37 mg·L-1. Thus, MA-1266 can be a promising green corrosion inhibitor candidate with IE N 91% at 21× 10-6 mol·L-1. The experiments were coupled with computational chemical theories such as quantum chemical and molecular dynamic methods. The experimental results were in good agreement with the computational outputs.

关键词： Acid corrosion C-steel Furanylnicotinamidines Green inhibitor Computational chemical methods

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Liposomal Bupivacaine in Erector Spinae Plane Block and Interscalene Block for Scapular and Proximal Humerus Resections

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Open Journal of Anesthesiology 2023年第7期13卷 135-139页

作者： Mohamad Ayoub Sree Kolli husien Taleb Department of General Anesthesiology Cleveland Clinic Foundation Cleveland OH USA

Erector spinae plane block (ESPB) is a novel fascial plane block that was first described in 2016. It is considered an alternative for brachial plexus blocks in shoulder surgeries as the erector spinae muscle extends to the cervical level. Herein, we present a successful multilevel ESPB plus an interscalene block using liposomal bupivacaine in a 45-year-old female patient with metastatic sarcoma who presented for scapula and proximal humerus resection. The post-operative course was smooth, and the patient was discharged home on post-operative day 2 with minimal narcotic requirements.

关键词： Acute Pain Erector Spinae Plane Block Phrenic Nerve Liposomal Bupivacaine—Regional Anesthesia Spindle Cell Sarcoma

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辣木叶多糖对小鼠溃疡性结肠炎的防治与机制研究

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天然产物研究与开发 2023年第10期35卷 1659-1668页

作者： Hosameldeen Mohamed husien 彭伟龙刘明江伯若楠李金贵扬州大学兽医学院江苏省高校动物重要疫病与人畜共患病防控协同中心扬州225009 布尔塔那大学兽医学院 Rufaa 999129

探讨辣木叶多糖(Moringa oleifera leaf polysaccharide,MOLP)对葡聚糖硫酸钠(DSS)诱导的小鼠溃疡性结肠炎(ulcerative colitis,UC)防治作用及其作用机制。50只BALB/c小鼠随机分为正常对照组(Con组)、模型对照组(DSS组)、MOLP-L(25 mg/kg)、MOLF-M(50 mg/kg)、MOLF-H(100 mg/kg)组,通过饮用4%DSS诱导小鼠UC模型。试验期间每日记录各组小鼠体重情况和疾病活动指数(DAI)变化;ELISA法检测血清中TNF-α、IL-1β、IL-10、HMGB1和结肠组织MPO含量;HE染色观察结肠组织病理学变化;实时荧光定量PCR法检测结肠组织TNF-α、IL-1β、IL-10、HMGB1 mRNA表达水平;蛋白免疫印迹(Western blot)法检测结肠组织中TLR4、MyD88、P65、p-P65、IκBα和p-IκBα的表达;16S rRNA高通量测序探究小鼠肠道菌群的变化。结果显示,与Con组相比,DSS组小鼠一般状况下降,体重减轻,结肠长度缩短,DAI和病理切片损伤评分均显著增加(P<0.001);TNF-α、IL-1β、HMGB1含量和MPO活性显著升高(P<0.001),结肠组织中TLR4、MyD88、p-P65和p-IκBα的蛋白表达水平显著上调(P<0.001)。与DSS组相比,不同剂量MOLP处理组明显改善上述病变和炎性指标,显著提升了IL-10的表达,作用结果具有剂量依赖性;并且MOLP可以改善UC小鼠肠道菌群多样性,恢复菌群平衡。研究结果提示MOLP可以通过抑制炎症反应,调节小鼠肠道菌群多样性、组成和相对丰度进而发挥防治UC的作用。

关键词：辣木叶多糖溃疡性结肠炎炎性因子肠道菌群

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辣木叶总黄酮对小鼠溃疡性结肠炎防治作用的研究

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中国畜牧兽医 2022年第10期49卷 4042-4051页

作者：彭伟龙 HOSAMELDEEN Mohamed husien 伯若楠刘明江杨海峰李金贵扬州大学兽医学院江苏省高校动物重要疫病与人畜共患病防控协同中心扬州225009 布尔塔那大学兽医学院 Rufaa 999129 江苏农牧科技职业学院泰州225300

【目的】以葡聚糖硫酸钠(DSS)诱导的溃疡性结肠炎(UC)小鼠为模型,探究辣木叶总黄酮(MOLF)对UC的防治作用。【方法】将50只BALB/c小鼠随机分为5组:对照组、DSS组(模型组)和MOLF-L(25 mg/kg)、MOLF-M(50 mg/kg)、MOLF-H(100 mg/kg)处理组... 详细信息

【目的】以葡聚糖硫酸钠(DSS)诱导的溃疡性结肠炎(UC)小鼠为模型,探究辣木叶总黄酮(MOLF)对UC的防治作用。【方法】将50只BALB/c小鼠随机分为5组:对照组、DSS组(模型组)和MOLF-L(25 mg/kg)、MOLF-M(50 mg/kg)、MOLF-H(100 mg/kg)处理组,每组10只。小鼠通过饮用4%DSS诱导UC模型,各MOLF处理组灌胃相应剂量药物0.2 mL,对照组和DSS组灌以等体积的生理盐水,每天1次,连续7 d。每天记录各组疾病活动指数(DAI),在末次给药的次日经眼眶静脉丛采血,分离血清测定白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)、白细胞介素-10(IL-10)、高迁移率族蛋白B1(HMGB1)和内毒素(LPS)含量;小鼠脱颈处死后取结肠组织进行HE染色观察组织形态、PAS染色观察组织杯状细胞数量变化;实时荧光定量PCR法检测结肠组织中IL-1β、TNF-α、IL-10、HMGB1 mRNA表达水平;免疫荧光法检测肠黏膜闭锁连接蛋白-1(ZO-1)和闭合蛋白(Occludin)表达情况;Western blotting分析凋亡相关蛋白cleaved-caspase 3、Bcl-2、Bax的表达水平。【结果】UC小鼠造模成功,DSS组小鼠体内LPS、炎性因子含量、cleaved-caspase 3和Bax蛋白表达量与对照组相比差异极显著(P<0.01);不同剂量MOLF均可以改善UC小鼠体内炎症状况,尤以MOLF-H组效果最佳:与DSS组相比,DAI评分以及血清中LPS含量极显著降低(P<0.01),小鼠血清和结肠组织中促炎因子IL-1β、TNF-α、HMGB1含量和mRNA表达量均极显著降低(P<0.01),抗炎因子IL-10的表达量极显著升高(P<0.01),且cleaved-caspase 3和Bax的表达量极显著上调,Bcl-2的表达量极显著下调(P<0.01)。此外,MOLF可以改善结肠黏膜水肿、炎性细胞浸润情况,维持杯状细胞数量及其形态,增加ZO-1和Occludin蛋白表达量,且这些作用具有剂量依赖性。【结论】MOLF对DSS诱导的UC具有显著的防治作用,这可能与其抑制炎症并维护肠黏膜屏障的完整性有关。

关键词：辣木叶总黄酮小鼠溃疡性结肠炎炎性因子肠黏膜屏障

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BM-MSCs Differentiated Insulin-Producing Cells Produce More Insulin in Presence of EGF than of FGF

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Stem Cell Discovery 2015年第4期5卷 33-39页

作者： Cheia Majeed Ahmed M. Al-Shammari Eman H. Yausif Nahi Y. Yaseen Ayman Ali husien Rajha A. Al-Naimi Adnan Ajeel Department of Pathology College of Veterinary Medicine Baghdad University Baghdad Iraq Experimental Therapy Department Iraqi Center for Cancer and Medical Genetic Research Al-Mustansiriya University Baghdad Iraq

Adult stem cells have the ability to differentiate into islet like cells for the hope of treating diabetes mellitus (DM). The most important part is the differentiation process from na?ve stem cells to fully differentiated fully functional islet cells. For this purpose, we wanted to optimize the current proposed differentiation media by replacing the FGF with EGF and measure insulin production. Bone marrow-derived MSCs were from mice long bones and expanded in cell culture before induction of differentiation. Stem cells surface markers were analyzed by immunocytochemistry. Cultured stem cells were negative for CD34 while they expressed high levels of CD90. Differentiated cells morphology was studied by using H & E stain. Differentiated cells were detected by studying protein expression of insulin as specific marker for IPC differentiation. Cells function was studied by measuring the insulin production in tissue culture supernatant in vitro and also insulin release in response to glucose challenge. Ditizone staining were both positive. Insulin was secreted by these cells in response to different concentrations of glucose stimulation in a regulated manner. Cells induced with formula contain EGF produced more insulin in the same formula but contain FGF instead, this prove that EGF is the best to use during differentiation process.

关键词： Diabetes Mellitus Pancreatic β Cells Growth Factors

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