COVID-19 and cardiovascular manifestations.

OBJECTIVE: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), also known as COVID-19, a viral outbreak that started in December 2019, eventually lead to a worldwide pandemic. COVID-19 usually presents with flu-like symptoms, such as headaches, dry cough, fever, fatigue, myalgia, shortness of breath, diarrhea and loss of smell or taste. However, it can also have major effects on the cardiovascular system. Based on the available relevant literature, we aimed to elaborate the possible mechanisms influencing cardiovascular damage, myocardial injury and thromboembolic disease process in particular. MATERIALS AND METHODS: After considering our inclusion and exclusion criteria, the systematic review included 8 studies in total. RESULTS: In general, underlying cardiovascular diseases were associated with poorer clinical outcomes. This may be due to immunological dysregulation. The disease outcomes were also positively correlated with the severity of the disease, especially with myocardial injury. Thus, cardiac biomarkers, such as Troponin T, CK-MB and myoglobin could be utilized in prediction algorithms for deciphering the clinical outcome in COVID-19 patients. CONCLUSIONS: Venous thromboembolisms were commonly encountered complications despite the administration of thromboprophylaxis, and they mostly presented as pulmonary embolisms, warranting the need for relevant investigations in hemodynamically unstable patients. However, more studies need to be conducted to better understand the mechanisms at play and the ensuing complications, to better treat COVID-19 patients.

Fecal calprotectin - a valuable predictor of microscopic colitis.

OBJECTIVE: Microscopic colitis (MC) has been of major concern worldwide due to its relapsing and remitting nature of chronic diarrhea. Quality of life of patients suffering from this disease is quite debilitating. PATIENTS AND METHODS: In order to understand the role and importance of fecal calprotectin (FC) we performed a statistical analysis on the patients suffering from chronic diarrhea and admitted to our hospital from 2014 to 2020, and who were prescribed Loperamide (Imodium) or Budesonide or a combination of both and had undergone FC detection test. RESULTS: FC was found to be significantly correlated to the age, alcohol consumption and beta blocker use. A high level of the FC concentrations increases the chances of having flare-ups of diarrhea episodes making the quality of life of such patients worse. CONCLUSIONS: FC concentrations should be monitored frequently and precautionary measures to avoid a relapse should be aimed. Measures to improve quality of life, should be of prime concern. In-depth research is required to better understand MC and to find better treatment options which can be used on a long-term basis, instead of anti-motility drugs which are able to control the acute episodes, but when discontinued result in an increased tendency to have relapses.

What is there left to learn about the Drosophila clock?

Circadian rhythms offer probably the best understanding of how genes control behavior, and much of this understanding has come from studies in Drosophila. More recently, genetic manipulation of clock neurons in Drosophila has helped identify how daily patterns of activity are programmed by different clock neuron groups. Here, we review some of the more recent findings on the fly molecular clock and ask what more the fly model can offer to circadian biologists.