: Extracellular vesicles (EVs, formerly known as exosomes) are small, extracellular membrane-bound particles that play a role in cellular communication via transporting different cargos including proteins, DNAs, RNAs, etc. Their role has been shown in different endocrine/paracrine signaling in different organs such as the cardiovascular system. These days mortality and morbidity rates caused by cardiovascular disease (CVD) have become an important issue among healthcare systems all over the world. EVs great potentials for clinical diagnosis and treatment offer a bright future in assessing different types of CVDs. In this review we have summarized the variable roles of these nano-sized biological membrane-enclosed vesicles in myocardial injury, repair, and regeneration. We have also reviewed the value of EVs as diagnostic and prognostic biomarkers in the field of cardiology medicine and emphasized the promising capabilities of EVs as natural drug-delivery vehicles as a novel targeting treatment.

Inflammatory bowel disease (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC), are chronic relapsing conditions resulting from immune system activity in a genetically predisposed individual. IBD is based on progressive damage to the inflamed gut tissue. As its pathogenesis remains unknown, recent accumulating data have demonstrated that IBD is a complex and multi-factorial disorder correlated with host luminal factors, which lead to an imbalance between pro- and anti-inflammatory signaling. The growing understanding of the molecular mechanisms responsible for IBD has suggested a wide range of potential therapeutic targets to treat this condition. Some patients do not have a satisfactory response to current therapeutic medications such as antitumor necrosis factor (TNF) agents, or their response decreases over time. As a result, IBD therapeutics have been changed recently, with several new agents being evaluated. The identification of various inflammatory cascades has led to forming the idea to have novel medications developed. Medications targeting Janus kinases (JAK), leukocyte trafficking Interleukin (IL) 12/23, and Sphingosine 1 phosphate (S1P) are among these newly developed medications and highlight the role of microbial-host interaction in inflammation as a safe promising strategy. This systematic review aims to summarize different molecular targeting therapeutics, the most potent candidates for IBD treatment in recent studies.

The renin-angiotensin-aldosterone system (RAAS) has a significant act in the pathology of blood pressure and cancer. One of the dominant sections of angiotensin II (Ang II) and angiotensin-converting enzyme (ACE) expression generation in the human body is the capillary veins in the lung. Changes in the expression of RAAS were revealed to be included in several lung diseases. There are several studies on the anticancer effect of ACE inhibitors; however, Hicks and colleagues reported an augmented risk of 14% for advancing lung cancer for patients consuming ACE inhibitors against angiotensin receptor blockers (ARBs) administration. Several lines of evidence indicated that ARB users have a lower risk of tumor progression and metastasis and progression of lung cancer. This review has surveyed some studies about the study by Hicks et al with conflicting results. Some Hicks’s study limitations are summarized here such as genetic effects, comparative study, residual confounding factors such as smoking, detection bias owing to cough, and socio-economic status. It is suggested some natural alternatives to ACE Inhibitors in here.

We summarize the advantages and disadvantages of some of the most commonly used bioinks. We have probed the mechanical and cytotoxicity properties of Cellink and designed our own bioink from gelatin and Xanthan gum.