IntroductionDiabetes is a serious metabolic disorder and plenty of medical plants are used in traditional medicines to treat diabetes. These plants have no side effects and many existing medicines are derived from the plants. The purpose of this systematic review is to study diabetes and to summarize the available treatments for this disease, focusing especially on herbal medicine.MethodsRequired papers about diabetes and effective plants were searched from the databases, including Science direct, PubMed, Wiley, Scopus, and Springer. Keywords in this study are ”medicinal plants”, “diabetes”, “symptom”, “herbal”, and “treatment”. Out of the 490 collected articles (published in the period between 1995 and 2015), 450 were excluded due to non-relevance or lack of access to the original article.ResultsDiabetes is mainly due to oxidative stress and an increase in reactive oxygen species that can have major effects. Many plants contain different natural antioxidants, in particular tannins, flavonoids, C and E vitamins that have the ability to maintain β-cells performance and decrease glucose levels in the blood.ConclusionAccording to published results, it can be said that medical plants are more affordable and have less side effects compared synthetic drugs, and are more effective in treatment of diabetes mellitus.
Cell death resistance is a key feature of tumor cells. One of the main anticancer therapies is increasing the susceptibility of cells to death. Cancer cells have developed a capability of tumor immune escape. Hence, restoring the immunogenicity of cancer cells can be suggested as an effective approach against cancer. Accumulating evidence proposes that several anticancer agents provoke the release of danger-associated molecular patterns (DAMPs) that are determinants of immunogenicity and stimulate immunogenic cell death (ICD). It has been suggested that ICD inducers are two different types according to their various activities. Here, we review the well-characterized DAMPs and focus on the different types of ICD inducers and recent combination therapies that can augment the immunogenicity of cancer cells.
The number of descriptions of emerging viruses has grown at an unprecedented rate since the beginning of the 21 st century. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), is the third highly pathogenic coronavirus that has introduced itself into the human population in the current era, after SARS-CoV and Middle East respiratory syndrome coronavirus (MERS-CoV). Molecular and cellular studies of the pathogenesis of this novel coronavirus are still in the early stages of research; however, based on similarities of SARS-CoV-2 to other coronaviruses, it can be hypothesized that the NF-κB, cytokine regulation, ERK, and TNF-α signaling pathways are the likely causes of inflammation at the onset of COVID-19. Several drugs have been prescribed and used to alleviate the adverse effects of these inflammatory cellular signaling pathways, and these might be beneficial for developing novel therapeutic modalities against COVID-19. In this review, we briefly summarize alterations of cellular signaling pathways that are associated with coronavirus infection, particularly SARS-CoV and MERS-CoV, and tabulate the therapeutic agents that are currently approved for treating other human diseases.
Cancer stem cells (CSCs) are a small subpopulation of tumor cells that have been identified in most types of cancer. Features that distinguish them from the bulk of tumor cells include their pluripotency, self‐renewal capacity, low proliferation rate, and tumor‐initiating ability. CSCs are highly malignant, as they confer drug resistance and facilitate tumor progression, relapse, and metastasis. The molecular mechanisms underlying CSC biology are now beginning to be understood. In this context, microRNAs (miRNAs) occupy a prominent place. These endogenous, small noncoding RNA molecules control gene expression at the posttranscriptional level. This study reviews our current understanding of how the misexpression of tumor suppressor and oncogenic miRNAs in CSCs sustain their abundance and malignant properties. We discuss how they partly do so by acting on major CSC signaling pathways, including the Wnt, Notch, Hedgehog, and BMI‐1 pathways. Our current knowledge of miRNA functions in CSCs may now be used for cancer diagnostic and prognostic purposes. In addition, when combined with recent technical advances in the in vivo delivery of miRNAs, we are now in an excellent position to develop strategies that harness miRNA interference and replacement technologies for the therapeutic targeting of CSCs.
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