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Topic Review
Mechanisms Underlying SCFAs Protective Effect on Blood–Brain Barrier
Impairment of the blood–brain barrier (BBB) integrity is implicated in the numerous neurological disorders associated with neuroinflammation, neurodegeneration and aging. Short-chain fatty acids (SCFAs), mainly acetate, butyrate and propionate, produced by anaerobic bacterial fermentation of the dietary fiber in the intestine, have a key role in the communication between the gastrointestinal tract and nervous system and are critically important for the preservation of the BBB integrity under different pathological conditions.
  • 328
  • 25 Jun 2023
Topic Review
Oncogenic miRNAs in Breast Cancer Progression and Metastasis
Both clinical samples and cancer cell lines provide researchers with an insight into the complex structure and hierarchy of cancer. Intratumor heterogeneity allows for multiple cancer cell subpopulations to simultaneously coexist within tumors. One category of these cancer cell subpopulations is cancer stem cells (CSCs), which possess stem-like characteristics and are not easily detectable. In the case of breast cancer, which is the most prevalent cancer type among females, such subpopulations of cells have been isolated and characterized via specific stem cell markers. These stem-like cells, known as breast cancer stem cells (BCSCs), have been linked to major events during tumorigenesis including invasion, metastasis and patient relapse following conventional therapies. Complex signaling circuitries seem to regulate the stemness and phenotypic plasticity of BCSCs along with their differentiation, evasion of immunosurveillance, invasiveness and metastatic potential. Within these complex circuitries, new key players begin to arise, with one of them being a category of small non-coding RNAs, known as miRNAs.
  • 309
  • 25 Jun 2023
Topic Review
Transcranial Electrical Stimulation in Gambling and Gaming
Gambling disorder (GD) and internet gaming disorder (IGD) are formally recognized behavioral addictions with a rapidly growing prevalence and limited treatment options. Transcranial electrical stimulation (tES) techniques have emerged as potentially promising interventions for improving treatment outcomes by ameliorating cognitive functions implicated in addictive behaviors.
  • 293
  • 25 Jun 2023
Topic Review
High-Fat Diet in Inflammatory Bowel Disease
The intestinal immune balance is disrupted by a high-fat diet (HFD) in several ways, such as impairing the intestinal barrier, influencing immune cells, and altering the gut microbiota. In contrast, a rational diet is thought to maintain intestinal immunity by regulating gut microbiota.
  • 253
  • 25 Jun 2023
Topic Review
Intra and Post-Operative Graft Quality Assessment
Coronary artery bypass grafting (CABG) is the gold standard procedure for multi vessels and left main coronary artery disease. The prognosis and survival outcomes of CABG surgery are highly dependent on the patency of the bypass graft. Early graft failure which can occur during or soon after CABG remains a significant issue, with reported incidences of 3–10%. Graft failure can lead to refractory angina, myocardial ischemia, arrhythmias, low cardiac output, and fatal cardiac failure, emphasizing the importance of ensuring graft patency during and after surgery to prevent such complications. Technical errors during anastomosis are among the leading causes of early graft failure.
  • 335
  • 25 Jun 2023
Topic Review
T2D Risk in Women with Polycystic Ovary Syndrome
Women with polycystic ovary syndrome (PCOS) are at increased risk for dysglycemia and type 2 diabetes compared to healthy BMI-matched women of reproductive age.
  • 348
  • 25 Jun 2023
Topic Review
Role of PD-L1 in Hematopoietic and Organ Transplant
One major limitation shared by hematopoietic cellular therapies and solid organ transplantation is the occurrence of graft-versus-host disease (GVHD) and graft failure, respectively. In both cases, an overactive immune system targets and destroys functional tissue, similar to autoimmune diseases. Promising targets for future immunotherapy include the interaction of programmed Death-Ligand 1 (PD-L1) with PD-1 or CD-80, which play a role in regulating T cells. Studies have shown that overexpression of PD-L1 in GVHD models improves survival and reduces pro-inflammatory cytokine secretion. Similarly, stimulating PD-L1 during organ transplantation prolongs the graft’s lifespan and reduces rejection rates. 
  • 335
  • 25 Jun 2023
Topic Review
Focal Cortical Dysplasia in Tuberous Sclerosis Complex
Patients with tuberous sclerosis complex present with cognitive, behavioral, and psychiatric impairments, such as intellectual disabilities, autism spectrum disorders, and drug-resistant epilepsy. It has been shown that these disorders are associated with the presence of cortical tubers. Tuberous sclerosis complex results from inactivating mutations in the TSC1 or TSC2 genes, resulting in hyperactivation of the mechanistic target of rapamycin (mTOR) signaling pathway, which regulates cell growth, proliferation, survival, and autophagy. TSC1 and TSC2 are classified as tumor suppressor genes and function according to Knudson’s two-hit hypothesis, which requires both alleles to be damaged for tumor formation. However, a second-hit mutation is a rare event in cortical tubers. This suggests that the molecular mechanism of cortical tuber formation may be more complicated and requires further research.
  • 475
  • 25 Jun 2023
Topic Review
Myocarditis
Myocarditis is an inflammatory disease of the myocardium caused by infectious or non-infectious agents. It can lead to serious short-term and long-term sequalae, such as sudden cardiac death or dilated cardiomyopathy. Due to its heterogenous clinical presentation and disease course, challenging diagnosis and limited evidence for prognostic stratification, myocarditis poses a great challenge to clinicians. As it stands, the pathogenesis and etiology of myocarditis is only partially understood.
  • 328
  • 25 Jun 2023
Topic Review
Pathogenesis of Urinary Tract Infections
Urinary tract infections (UTIs) are among the most common bacterial infections worldwide, occurring in both community and healthcare settings. Although the clinical symptoms of UTIs are heterogeneous and range from uncomplicated (uUTIs) to complicated (cUTIs), most UTIs are usually treated empirically. Bacteria are the main causative agents of these infections, although more rarely, other microorganisms, such as fungi and some viruses, have been reported to be responsible for UTIs.
  • 813
  • 21 Jun 2023
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