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COVID-19-A theory of autoimmunity to ACE-2. COVID-19-ACE-2自身免疫理论。
Pub Date : 2020-01-01 Epub Date: 2020-05-27
Philip McMillan, Bruce D Uhal
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引用次数: 0
Role of bacterial infection in the development and progression of gastric cancers 细菌感染在胃癌发生发展中的作用
Pub Date : 2018-12-13 DOI: 10.15406/moji.2018.06.00251
S. Bonab
At present, cancer is the second leading cause of death worldwide, accounting for an estimated 9.6 million deaths in 2018.1 This type of diseases elicits from uncontrolled growth and proliferation of malignant cells harboring genetic alterations. These abnormally growing and proliferating cells can have a life-threatening effect when they physically or pathologically affect adjacent healthy cells in a vital organ. Distinct genetic alterations within a cell that result in out of control cell proliferation are responsible for the initiation of cancer formation. In this regard, genetic alterations in proto-oncogenes and tumor suppressor genes are frequently reported in several cancer cell types. Prolonged exposure to various mutagens can be involved in the induction of these genetic alterations in cancerous cells.2 Chronic infection represents a risk factor for cancer development. It has been estimated that up to 20% of the global cancer burden is attributed to infectious agents, especially viruses and bacteria.3,4 The bacterium Helicobacter pylori and viruses Hepatitis B virus, Hepatitis C virus, certain strains of human papillomavirus, Epstein-Barr virus, human immunodeficiency virus type-1, and human T-cell lymphotropic virus type-1 have been identified as major carcinogenic infectious agents by International Agency for Research on Cancer (IARC).3 These infectious agents are highly prevalent in the world. Nevertheless, most infected individuals do not develop cancer, indicating that genetic susceptibility of host and environmental factors may be associated with cancer caused by these infectious agents. Gastrointestinal tract is constantly exposed to many bacterial agents and some of these agents induce chronic inflammation in this organ. On the other hand, chronic inflammation may increase the rate of mutation in epithelial cells leading to cancerous cell formation. As discussed below for gastric cancer, some evidences suggest that specific bacteria can be involved in cancer development or progression. These bacteria can trigger oxidative stress in host cells, activate some intracellular pathways such as nuclear factor-kappa B (NF-κB) pathway, and promote production of various components involved in carcinogenesis. Role of inflammation in induction of oxidative stress and NF-κB pathway activation and cancer development, Phagocytosis of bacteria initiates oxidative stress in the phagocytic cells leading to release of reactive oxygen and nitrogen species such as peroxynitrite, reactive hydroxyl group, and other free radicals. These reactive components produced by inflammatory cells at site of infection affect enzymatic activities and expression of several genes. They can also induce DNA damage and genomic instability. Indeed, nucleotide modifications induced during oxidative stress can lead to mutagenesis. Some critical mutations and genomic instability, if not properly repaired, have the potential to orchestrate events in precancerous cells result
目前,癌症是全球第二大死亡原因,2018年估计有960万人死亡。1这类疾病是由携带基因改变的恶性细胞不受控制的生长和增殖引起的。当这些异常生长和增殖的细胞在生理或病理上影响重要器官中邻近的健康细胞时,它们可能会产生危及生命的影响。细胞内导致细胞增殖失控的明显基因改变是癌症形成的原因。在这方面,在几种癌症细胞类型中,原代基因和肿瘤抑制基因的基因改变经常被报道。长期暴露于各种诱变剂可能会诱导癌细胞发生这些基因改变。2慢性感染是癌症发展的危险因素。据估计,全球癌症负担的20%归因于传染源,尤其是病毒和细菌。3,4幽门螺杆菌和乙型肝炎病毒、丙型肝炎病毒、某些人乳头瘤病毒株、EB病毒、1型人类免疫缺陷病毒、,和人类T细胞嗜淋巴病毒1型已被国际癌症研究机构(IARC)确定为主要致癌传染源。3这些传染源在世界上高度流行。尽管如此,大多数感染者不会发展为癌症,这表明宿主和环境因素的遗传易感性可能与这些传染源引起的癌症有关。胃肠道经常暴露于许多细菌制剂中,其中一些制剂会在该器官引发慢性炎症。另一方面,慢性炎症可能会增加上皮细胞的突变率,从而导致癌细胞的形成。如下文对癌症的讨论,一些证据表明,特定细菌可能参与癌症的发展或进展。这些细菌可以触发宿主细胞的氧化应激,激活一些细胞内途径,如核因子κB(NF-κB)途径,并促进参与致癌的各种成分的产生。炎症在诱导氧化应激和NF-κB通路激活和癌症发展中的作用细菌的吞噬作用启动吞噬细胞中的氧化应激,导致活性氧和氮物质的释放,如过氧亚硝酸盐、活性羟基和其他自由基。炎症细胞在感染部位产生的这些反应性成分影响酶活性和几个基因的表达。它们还可以诱导DNA损伤和基因组不稳定。事实上,在氧化应激过程中诱导的核苷酸修饰可以导致突变。一些关键突变和基因组不稳定,如果没有得到适当修复,有可能在癌前细胞中策划事件,导致对压力和死亡信号的抵抗,并诱导异常细胞增殖。氧化应激与NF-κB通路激活有关。4,5 NF-κB的激活参与微生物感染的早期先天免疫反应。6 NF-κB-存在于许多不同细胞的细胞质中,并与IkappaB(IκB)结合,从而阻止其进入细胞核。当细胞受到刺激时,NF-κB从IκB释放,进入细胞核,与靶基因启动子区的特定序列结合,并上调其转录。活化的NF-κB调节编码生长因子、细胞因子、趋化因子、细胞粘附分子、促炎酶、血管生成因子和凋亡相关蛋白的几个基因的转录。因此,NF-κB在各种细胞功能中具有重要作用,如通过激活生长因子如IL-2、粒细胞单核细胞集落刺激因子和CD40L来促进细胞增殖,7,8通过激活c-myc和细胞周期蛋白D1,7,9来促进细胞周期进展,以及通过调节抗凋亡蛋白ciAPS来抑制细胞凋亡,c-FLP和Bcl-2家族成员。7-11 NF-κB的激活也导致血管内皮生长因子(VEGF)和基质金属蛋白酶(MMP)的上调,这两种因子分别与血管生成和细胞迁移有关。此外,NF-κB参与环氧合酶-2(COX2)的过度表达,COX2是一种调节前列腺素合成的酶,12在细胞增殖、13-15迁移、15侵袭、15凋亡和血管生成中发挥作用。14-18 COX-2也有助于免疫逃避。19
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引用次数: 0
A novel marker in patients with alopecia areata 斑秃患者的新标志物
Pub Date : 2018-12-13 DOI: 10.15406/moji.2018.06.00250
R. Ghaderi
Alopecia areata is a chronic inflammatory disease. The main manifestation of the disease is usually a rapid onset of hair loss in a specific area and usually round.1 The prevalence of Alopecia areata is 1.7%.2,3 The skin of the affected area is flat or slightly red and may have short hair pieces. Hair shaft in alopecia areata not well shaped and fragile when it reaches the surface.4 The presence of hair in the form of an exclamation mark in the lesion near the proximal end of the hair that is thinner can be helpful in diagnosis. Hair loss may be completely reversible, become chronic or cause loss of whole head hair or whole body hair.3‒5 Alopecia areata, depending on the extent and area of involvement, includes various types: PATCHY (most commonly, Ophiasis (at the scalp), Totalis (whole head hair) and Universalis (total head and body hair) .6,7 The presence of eosinophils in biopsy is a useful diagnostic symptom in cases with difficult to diagnose. Measurements of triiodothyronine, thyroxine, thyroid stimulating hormone, antithyroglobulin and anti-microsomal antibodies, especially for children, should be performed.8 Alopecia areata may be associated with these diseases: thyroid disease, severe anemia, Addison disease, vitiligo, lupus erythematosus, ulcerative colitis, diabetes mellitus and Down syndrome.8,9 (HSP) Heat shock protein was first introduced in 1964 by Ritossa showed that due to heat, a rearrangement of the fruit insect’s chromatin called Drosophila busckii is created and concluded that its synthesizing genes are activated by heat, so it is called heat shock protein.10 These proteins include about 1-2% of total protein in normal conditions and 4 to 6% in stress conditions in all eukaryotic cells.11 Based on the molecular weight, they are divided into five families: the heat shock protein family 104, the heat shock protein 90, the heat shock protein 70, the heat shock protein 60, and the small heat shock proteins such as the heat shock protein 27.12 Heat shock proteins exist in normal cells and prevent the creation of inappropriate spatial structures caused by inappropriate protein gathering but, due to biological stress and increased toxic and inflammatory chemicals, it is useful in protecting cells from stress.13,14 Oxidative stress indicates an imbalance between the appearance of free radicals of oxygen and the ability of the biological system to detoxify or repair their destructive effects.15 The HSP70 family is the most sensitive group of these proteins and has the most protected structure. HSP70 is a protein that binds to ATP and is found in 60-80% of the eukaryotic cells.16 The HSP70 is vital to both cell function and survival after stress. In addition to the thermal shock, several stimuli, including hypoxia, acidosis, active oxygen lines, active nitrogen classes, viral infections, malignancies, autoimmune disease, and induced transcription.17 Since inflammatory and immune factors play a role in the pathogenesis of alopecia area
斑秃是一种慢性炎症性疾病。该疾病的主要表现通常是在特定区域迅速脱发,通常是圆形的。1斑秃的患病率为1.7%。2,3患处皮肤平坦或略红,可能有短发。斑秃的发干形状不好,到达表面时很脆弱。4头发近端附近较细的病变处有感叹号形式的头发,这有助于诊断。脱发可能是完全可逆的,可能是慢性的,也可能会导致整个头发或全身头发的脱落。3-5斑秃,根据发病的程度和区域,包括各种类型:PATCHY(最常见的是(头皮)的Ophysis,Totalis(全头毛)和Universalis(全身头毛)。6,7活检中嗜酸性粒细胞的存在是难以诊断的病例的有用诊断症状。应测量三碘甲状腺原氨酸、甲状腺素、促甲状腺激素、抗甲状腺球蛋白和抗微粒体抗体,尤其是对儿童。8斑秃可能与以下疾病有关:甲状腺疾病、严重贫血、艾迪生病、白癜风、红斑狼疮、溃疡性结肠炎、,Ritossa于1964年首次引入热休克蛋白,该蛋白表明,由于热,果蝇的染色质发生了重排,并得出其合成基因被热激活的结论,因此被称为热休克蛋白。10在所有真核细胞中,这些蛋白质在正常条件下约占总蛋白质的1-2%,在应激条件下约为4-6%。11根据分子量,它们分为五个家族:热休克蛋白家族104、热休克蛋白90、热休克蛋白质70、,以及小的热休克蛋白如热休克蛋白27.12热休克蛋白存在于正常细胞中并防止由不适当的蛋白质聚集引起的不适当的空间结构的产生,它有助于保护细胞免受应激。13,14氧化应激表明氧自由基的出现与生物系统解毒或修复其破坏性作用的能力之间存在不平衡。15 HSP70家族是这些蛋白质中最敏感的一组,具有最受保护的结构。HSP70是一种与ATP结合的蛋白质,存在于60-80%的真核细胞中。16 HSP70对细胞功能和应激后的生存至关重要。除了热休克外,还有几种刺激,包括缺氧、酸中毒、活性氧系、活性氮类、病毒感染、恶性肿瘤、自身免疫性疾病和诱导转录。17由于炎症和免疫因子在斑秃的发病机制中发挥作用,我们决定研究血清HSP70(作为一种全身炎症标志物)水平与斑秃发病机制之间的关系。
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引用次数: 1
STK4 (MST1) loss of function mutation: a cocktail of combined immune deficiency diseases STK4 (MST1)功能缺失突变:联合免疫缺陷疾病的鸡尾酒
Pub Date : 2018-12-13 DOI: 10.15406/MOJI.2018.06.00252
R. Elfeky
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引用次数: 0
Tuberculosis at the socialized patients without comorbidity in different age groups 结核病在不同年龄段无合并症的社会化患者中
Pub Date : 2018-12-11 DOI: 10.15406/moji.2018.06.00249
Belosokhov Mv, Kazachkov El
The problem of tuberculosis is still relevant, despite the trend towards a reduction of morbidity.1 Labor migration entails the delivery of new TB cases and TB epidemic burdening situation. In studies that examine the various features of TB, the analysis is performed in patients that have burdened comorbidity status, and often social problems the lack of a permanent place of residence, are or were present earlier in the prison system. In the available literature we have not TB research has been reported in patients socialized with no significant (comorbid) conditions. In our opinion, it is in these “ideal” patients, epidemiological and clinical presentation of TB is devoid of confounding factors that can make a fairly dramatic change in the picture of TB.
尽管发病率呈下降趋势,但结核病问题仍然存在。1劳动力迁移带来了新的结核病病例和结核病疫情负担。在研究结核病的各种特征的研究中,分析对象是那些患有合并症的患者,以及通常存在的社会问题——缺乏永久居住地——在监狱系统中存在或曾经存在。在现有的文献中,我们没有在没有显著(共病)情况的社会化患者中进行结核病研究的报告。在我们看来,正是在这些“理想”患者中,结核病的流行病学和临床表现没有混杂因素,这些因素可以使结核病的情况发生相当大的变化。
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引用次数: 0
Immunomodulatory properties of indigenous cow urine 奶牛尿的免疫调节特性
Pub Date : 2018-12-10 DOI: 10.15406/moji.2018.06.00248
R. Chauhan
Outside the India, there is no research work reported in literature as far as the cow pathy or medicinal properties of cow urine are concerned. However, there is a US patent issued to inventors Khanuja and his associates vide no. 6410059 dated 25.6.2002 on a pharmaceutical composition comprising of an antibiotic and cow urine distillate in an amount effective to enhance antimicrobial effect of antibiotics. In India, the ancient literature including Ayurveda has description on Panchgavya therapy that includes cow urine, milk, curd, ghee and dung. The Panchgavya therapy though an age old system of medicine is not given due importance in modern science. However, there are scanty reports of therapeutic use of cow urine or other Panchgavya materials to cure human and animal ailments. Immunomodulatory properties of cow urine distillate in mice recorded an increase in humoral and cellular immunity of 45% and 59%, respectively.1‒4 The parameters used to assess immunity were B-lymphocyte blastogenesis, T-lymphocyte blastogenesis, serum IgG and IgM levels. The cow urine also stimulated the production of interleukin 1 and 2 by 16% and 21%, respectively, from peripheral blood leucocytes of mice. The phagocytic activity of macrophages was enhanced by 104% in mice treated with cow urine in comparison to controls. Lymphocytes proliferation in response to mitogen in the developing chick embryo increased with the use of cow urine. This means that immune system developed at an early stage and embryonic mortality can be decreased with the use of cow urine. Urine of red hill cow, found in Uttarakhand state and characterized as Badri cow has been found to be most potent immunostimulator. It was observed that urine of cross bred, exotic cow and a buffalo has no immunomodulatory effect. Cow urine given to the poultry birds in water as an alternative to antibiotics demonstrated excellent immunomodulatory properties in addition to the increase in the egg production and egg quality of the layer birds. In another important study effect of cow urine on the lymphocytes damaged by pesticides was observed. It was found that cow urine decreases the apoptosis caused by the heavy metals in avian lymphocytes. Thus, corroborating to some extent with the findings that cow urine help in repair of broken DNA. The antioxidant properties of cow urine distillate include protection or DNA and its repairs. The cow urine distillate protected the chromosomal aberrations caused by mitomycin-C in human leukocyte culture. Similarly, cow urine was found to be a very good antioxidant. Cow urine has a high antioxidant status as indicated by its ability to destroy the free radicals.
在印度以外,关于牛病或牛尿的药用特性,文献中没有报道过任何研究工作。然而,有一项授予发明人Khanuja及其同事的美国专利(见日期为2002年6月25日的第6410059号),该专利涉及一种药物组合物,该药物组合物包含抗生素和牛尿馏出物,其量能有效增强抗生素的抗微生物作用。在印度,包括阿育吠陀在内的古代文献对Panchgavya疗法进行了描述,其中包括牛尿、牛奶、凝乳、酥油和粪便。Panchgavya疗法虽然是一种古老的医学体系,但在现代科学中并没有得到应有的重视。然而,关于使用牛尿或其他Panchgavya材料治疗人类和动物疾病的报道很少。小鼠牛尿馏出物的免疫调节特性记录了体液免疫和细胞免疫分别增加了45%和59%。1-4用于评估免疫的参数是B淋巴细胞母细胞生成、T淋巴细胞母细胞形成、血清IgG和IgM水平。牛尿还刺激小鼠外周血白细胞产生白细胞介素1和2,分别增加16%和21%。与对照组相比,用牛尿处理的小鼠中巨噬细胞的吞噬活性增强了104%。在发育中的鸡胚中,淋巴细胞对有丝分裂原的反应随着使用牛尿而增加。这意味着免疫系统在早期发育,使用牛尿可以降低胚胎死亡率。在北阿坎德邦发现的红丘牛的尿液被认为是最有效的免疫刺激剂。据观察,杂交的外来奶牛和水牛的尿液没有免疫调节作用。将牛尿作为抗生素的替代品在水中给予家禽,除了提高蛋鸡的产蛋量和蛋质量外,还表现出优异的免疫调节特性。在另一项重要的研究中,观察了牛尿对农药损伤的淋巴细胞的影响。研究发现,牛尿可降低重金属对禽类淋巴细胞的凋亡。因此,在一定程度上证实了牛尿有助于修复断裂的DNA的发现。牛尿馏出物的抗氧化特性包括保护DNA及其修复。牛尿提取物对人类白细胞培养中由丝裂霉素C引起的染色体畸变具有保护作用。同样,牛尿也被发现是一种很好的抗氧化剂。牛尿具有很高的抗氧化能力,这表明它能够破坏自由基。
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引用次数: 3
Late onset lynphedema 迟发性lynphedema
Pub Date : 2018-11-16 DOI: 10.15406/MOJI.2018.06.00215
Julio Palacios Juárez, Jesús Morales Maza, J. Estrada, Diego Colin Vega, Ludivina A Cortés Martínez, Mauricio Zúñiga Zamora, Cristian B Castro Jadan
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引用次数: 0
Miliary tuberculosis of the lymph nodes in a developing community 发展中社区淋巴结的军性结核
Pub Date : 2018-11-16 DOI: 10.15406/MOJI.2018.06.00225
W. Onuigbo, Simeon Okeke
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引用次数: 0
Effects of 2, 2-Dichlorovinyl Dimethyl Phosphate (DDVP) on leukocyte profiles in juveniles and adult sizes of Tilapia guineensis 2,2-二氯乙烯基二甲基磷酸酯(DDVP)对罗非鱼幼鱼和成虫白细胞分布的影响
Pub Date : 2018-11-16 DOI: 10.15406/MOJI.2018.06.00217
Akinrotimi Oa, Wilfred Ekpripo Pc, Ukwe Oik
Most of the vertebrates including fish have five types of white blood cells such as lymphocytes, neutrophils, eosinophils, basophils and monocytes. The shape of each cell type appears to be conserved in living organism, with the exception of the neutrophils.1,2 In aves and reptilia, the neutrophils take the place of heterophils, and carry out the same immunological functions in the cell of these organisms.3 While in amphibians, this category of cell is sometimes called heterophils, however it is comparable to a neutrophil. And reptilian families have a sixth type of cell, called an azurophil, which majority of scientists classify with monocytes.4 Neutrophils/heterophils and lymphocytes constitute about 80% of WBCs in mammals. They are the main phagocytic leukocytes, and multiply rapidly in the system of the fish as a reaction to disease invasion, inflammations, stress and toxicants.5,6
包括鱼类在内的大多数脊椎动物都有五种类型的白细胞,如淋巴细胞、中性粒细胞、嗜酸性粒细胞、碱性粒细胞和单核细胞。除中性粒细胞外,每种细胞类型的形状在活体中似乎都是保守的。1,2在aves和reptilia中,中性粒细胞取代了嗜异性细胞,并在这些生物体的细胞中执行相同的免疫功能。3而在两栖动物中,这类细胞有时被称为嗜异细胞,但它与中性粒细胞相当。爬行动物家族有第六种细胞,称为嗜蓝细胞,大多数科学家将其与单核细胞分类。4哺乳动物中,中性粒细胞/嗜异细胞和淋巴细胞约占WBC的80%。它们是主要的吞噬白细胞,在鱼类系统中快速繁殖,作为对疾病侵袭、炎症、压力和有毒物质的反应。5,6
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引用次数: 4
Epidemiology of adenoid cystic carcinoma presenting in lymph nodes in a developing community 发展中社区淋巴结腺样囊性癌的流行病学研究
Pub Date : 2018-11-16 DOI: 10.15406/moji.2018.06.00226
W. Onuigbo
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引用次数: 0
期刊
MOJ immunology
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