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Topic Review
Heart Failure after Aortic Valve Replacement
Severe aortic stenosis (AS) carries a poor prognosis with the onset of heart failure (HF) symptoms, and surgical or transcatheter aortic valve replacement (AVR) is its only definitive treatment. The management of AS has seen a paradigm shift with the adoption of transcatheter aortic valve replacement (TAVR), allowing for the treatment of AS in patients who would not otherwise be candidates for surgical AVR.
  • 279
  • 12 Oct 2023
Topic Review
Spermatogenesis and Andrological Diseases
Male infertility is a condition that has always been less studied and known than female infertility. Male infertility is increasingly present and increasingly diagnosed. The worldwide denasality can only be slowed if awareness campaigns are implemented on all the diseases that can alter fertile potential, especially in young adolescents. 
  • 232
  • 12 Oct 2023
Topic Review
Thyroid Autoimmunity and SARS-CoV-2 Infection
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiological culprit of COronaVIrus Disease 19 (COVID-19), can enter the cells via the angiotensin-converting enzyme 2 (ACE2) receptor, which has been found in several tissues including in endocrine organs, such as the ovaries, testes, pancreas, and thyroid. Several thyroid disorders have been associated with SARS-CoV-2 infection [subacute thyroiditis (SAT), thyrotoxicosis, and non-thyroidal illness syndrome (NTIS)] and, in part, they are believed to be secondary to the local virus replication within the gland cells. However, as documented for other viruses, also SARS-CoV-2 seems to interfere with several aspects of the immune system, inducing the synthesis of autoantibodies and triggering latent or new onset autoimmune disease (AID), including autoimmune thyroid disease (AITD), such as Hashimoto Thyroiditis (HT) and Graves’ disease (GD). Several mechanisms have been hypothesized to explain this induction of autoimmunity by SARS-CoV-2 infection: the immune system hyper-stimulation, the molecular mimicry between self-antigens of the host and the virus, neutrophils extracellular traps, and finally the virus induced transcriptional changes of the immune genes; nonetheless, more evidence is needed especially from large long-term cohort studies involving COVID-19 patients, to establish or reject this pathogenetic relationship.
  • 261
  • 12 Oct 2023
Topic Review
Transcatheter Aortic Valve Intervention Complications and Challenges
Since the first in man transcatheter aortic valve intervention (TAVI) performed by Dr. Alain Cribier in 2002 in a non-operable aortic stenosis (AS) patient, TAVI has changed the lives of so many patients for whom medical treatment was, up to then, the only option.
  • 291
  • 12 Oct 2023
Topic Review
Gravitational Ischemia in the Brain
The physiological mechanisms for releasing and resolving gravitational ischemia in the brain, and their susceptibility to malfunction, may play an important role in a variety of neurological illnesses. An astronaut on a space walk in a micro-gravity environment may be susceptible to neuro-ocular symptoms associated with unopposed gravity-resistance mechanisms for partially preventing gravitational ischemia in the brain, and for attenuating its impact—mechanisms which may be required for normal brain physiology on Earth. Astronauts on the International Space Station typically breathe a mixture of gasses similar in composition to what they breathed on Earth, following the 1967 death of three astronauts, including Ed White, by fire on the Apollo 1 spacecraft, which was carrying 100% oxygen.
  • 271
  • 12 Oct 2023
Topic Review
Hemoptysis in Cancer Patients
Hemoptysis in cancer patients is a potentially serious symptom that requires detailed evaluation by oncologists and emergency department physicians. Timely diagnosis and appropriate management are crucial to address both the immediate concern of bleeding and the broader implications for the patient's cancer care. As hemoptysis in cancer patients indicates the presence of complications or progression of the disease, investigating the underlying cause using appropriate diagnostic procedures such as imaging studies (CT scans, bronchoscopy) and laboratory tests is vital, as it can significantly impact treatment choices and potentially alter the patient's overall prognosis. Risk stratification for cancer patients presenting with hemoptysis will support a personalized treatment approach that ensures that each patient receives tailored and effective care and identifies patients who are at a higher risk of deterioration, warranting more aggressive diagnostic and treatment plans and close, continuous monitoring for these patients.
  • 194
  • 12 Oct 2023
Topic Review
PI3K/AKT/GSK3 Pathway Involved in Psychiatric Illnesses
Psychiatric illnesses may be qualified to the cellular impairments of the function for survival or death in neurons, which may consequently appear as abnormalities in the neuroplasticity. The molecular mechanism has not been well understood, however, it seems that PI3K, AKT, GSK3, and their downstream molecules have crucial roles in the pathogenesis. Through transducing cell surviving signal, the PI3K/AKT/GSK3 pathway may organize an intracellular central network for the action of the synaptic neuroplasticity. In addition, the pathways may also regulate cell proliferation, cell migration, and apoptosis. Several lines of evidence have supported a role for this signaling network underlying the development and treatment for psychiatric illnesses.
  • 379
  • 11 Oct 2023
Topic Review
Visceral Hypersensitivity Association with  Irritable Bowel Syndrome
Irritable bowel syndrome (IBS) is a severe problem in the health service. It is estimated that it accounts for 3% of all medical consultations. Moreover, this diagnosis is made in the case of about 40% of all outpatient gastroenterological referrals. The visceral stimuli from the digestive tract are transmitted via afferent nerves through the spinal cord to the brain, where they are felt as pain. The overreaction observed in the brain of irritable bowel syndrome (IBS) patients may be due to increased peripheral sensitivity to stimuli from the gastrointestinal tract.
  • 235
  • 11 Oct 2023
Topic Review
Disseminated Intravascular Coagulopathy and Venous Thromboembolism in COVID-19
SARS-CoV-2 infection, discovered and isolated in Wuhan City, Hubei Province, China, causes acute atypical respiratory symptoms and has led to profound changes in  lives. COVID-19 is characterized by a wide range of complications, which include pulmonary embolism, thromboembolism and arterial clot formation, arrhythmias, cardiomyopathy, multiorgan failure, and more. The disease has caused a worldwide pandemic, and despite various measures such as social distancing, various preventive strategies, and therapeutic approaches, and the creation of vaccines, the novel coronavirus infection (COVID-19) still hides many mysteries for the scientific community.
  • 432
  • 11 Oct 2023
Topic Review
Cannabinoid Locations in the Central Nervous System
Neuroinflammation is a complex biological process that typically originates as a protective response in the brain. This inflammatory process is triggered by the release of pro-inflammatory substances like cytokines, prostaglandins, and reactive oxygen and nitrogen species from stimulated endothelial and glial cells, including those with pro-inflammatory functions, in the outer regions. While neuronal inflammation is common in various central nervous system disorders, the specific inflammatory pathways linked with different immune-mediated cell types and the various factors influencing the blood-brain barrier significantly contribute to disease-specific characteristics.
  • 283
  • 11 Oct 2023
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