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Topic Review
Glucocorticoid-Induced Osteoporosis (GIOP)
In a physiological state, glucocorticoids stimulate mature osteoblasts to produce Wnt proteins functioning as signaling molecules, causing a Wnt/β-catenin cascade to be activated. This signaling cascade affects mesenchymal progenitor cells, and has a positive effect on their differentiation into osteoblasts instead of chondrocytes or adipocytes. Glucocorticoids are the most widely used anti-inflammatory drug around the world. Despite their excellent effect in managing many acute inflammatory diseases and autoimmune disorders, the usage of glucocorticoids has been limited due to substantial adverse effects. One of the most well-known side effects is osteoporosis, which further induces bone fracture and other musculoskeletal problems.
  • 534
  • 18 Sep 2023
Topic Review Peer Reviewed
Diabetic Kidney Disease: Goals for Management, Prevention, and Awareness
Diabetic kidney disease (DKD), which is diagnosed on the basis of reduced glomerular filtration rate (GFR), increased albuminuria, or both, is the leading cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide. Future projections anticipate a significant increase in diabetes cases, with close to 700 million diabetes patients internationally by the year 2045. Amidst ongoing research into novel biomarkers and therapeutic agents for DKD, the current clinical preventative strategy for DKD involves (1) intensive glycemic control, (2) treatment of associated co-morbidities (hypertension and hyperlipidemia), and (3) instruction on lifestyle modifications, including smoking cessation, exercise, and dietary habits. In addition to these three categories, patient education on renal injury, a fourth category, is equally important and necessary in the collaborative effort to reduce global rates of DKD. In this entry, authors highlight and discuss these four core categories for DKD prevention.
  • 534
  • 28 Sep 2023
Topic Review
GERD after Bariatric Surgery
Bariatric surgery remains the gold standard treatment for morbidly obese patients. Roux-en-y gastric bypass and laparoscopic sleeve gastrectomy are the most frequently performed surgeries worldwide. Obesity has also been related to gastroesophageal reflux disease (GERD). The management of a preoperative diagnosis of GERD, with/without hiatal hernia before bariatric surgery, is mandatory. Endoscopy can show abnormal findings that might influence the final type of surgery.
  • 532
  • 04 Jun 2021
Topic Review
NO Signaling Pathways in Aging
Nitric Oxide (NO) is a potent signaling molecule involved in the regulation of various cellular mechanisms and pathways under normal and pathological conditions. NO production, its effects, and its efficacy, are extremely sensitive to aging-related changes in the cells. 
  • 532
  • 12 Aug 2021
Topic Review
HSPs and Ovarian Cancer
Ovarian cancer is a serious cause of death in gynecological oncology. Delayed diagnosis and poor survival rates associated with late stages of the disease are major obstacles against treatment efforts. Heat shock proteins (HSPs) are stress responsive molecules known to be crucial in many cancer types including ovarian cancer. Clusterin (CLU), a unique chaperone protein with analogous oncogenic criteria to HSPs, has also been proven to confer resistance to anti-cancer drugs. Indeed, these chaperone molecules have been implicated in diagnosis, prognosis, metastasis and aggressiveness of various cancers. However, relative to other cancers, there is limited body of knowledge about the molecular roles of these chaperones in ovarian cancer. Here, we shed light on the diverse roles of HSPs as well as related chaperone proteins like CLU in the pathogenesis of ovarian cancer and elucidate their potential as effective drug targets.
  • 531
  • 31 Aug 2021
Topic Review
GLP-1 Receptor Agonists in Polycystic Ovary Syndrome Management
Polycystic ovary syndrome (PCOS) is the most common metabolic and hormonal disorder in reproduction-aged women. Its pathogenesis involves multiple organ systems and is tightly associated with a higher predisposition and prevalence of abdominal obesity and insulin resistance. Profound weight loss effects in diabetic and non-diabetic patients gave birth to the idea that GLP-1 receptor agonists (GLP-1RAs) could be used in a subgroup of women with PCOS.
  • 531
  • 30 Aug 2022
Topic Review
Medicinal Plants of the Himalayas
WHO recommends cancer is the leading cause of death worldwide, with nearly 10 million deaths predicted in 2020(1). The bioactivities of phytocompounds for various health benefits have been studied for decades. Synthetic drugs are being replaced by phytocompounds which have great advantages due to their effects on a wide range of target cells with lower cell cytotoxicity effects or side effects compared to synthetic anticancer compounds, which are a single-target effect for prevention and treatment of carcinoma. Various medicinal plants and their nanoparticles have anticancer activity, namely Murraya koenigii leaf extract ZnO nanoparticlets. Most modern drugs used to treat cancer originate from various medicinal plants; 50% of the anticancer drugs originate from medicinal plants. In developing countries, more than 80% of people use medicinal plants as traditional medicinal therapy and 60% of cancer patients use herbal treatment as an option to cure cancer. Currently, for high-risk breast cancer patients, tamoxifen and related compounds such as raloxifene are prescribed. The phytocompounds most studied in different research papers for the treatment of cancer (anti-proliferative activity) are curcumin, polyphenols, Withaferin A (WFA), a triterpenoid, celastrol, and berry bioactives. Vinca alkaloids, podophyllotoxin, taxanes, campothecin, homoharringtonine, saponin, isoquinoline, shatavarine IV, stigamsterola, calotropin, and shikonin phytocompounds are discussed as follows. Cancer as well as boosting the immune system.
  • 530
  • 22 Aug 2022
Topic Review
PSTS-h
Primary malignant cardiac tumors are rare, with a prevalence of about 0.01% among all cancer histotypes. At least 60% of them are primary soft tissue sarcomas of the heart (pSTS-h) that represent almost 1% of all STSs. The cardiac site of origin is the best way to classify pSTS-h as it is directly linked to the surgical approach for cancer removal. Indeed, histological differentiation should integrate the classification to provide insights into prognosis and survival expectancy of the patients. The prognosis of pSTS-h is severe and mostly influenced by the primary localization of the tumor, the difficulty in achieving complete surgical and pharmacological eradication, and the aggressive biological features of malignant cells.
  • 529
  • 05 Jul 2021
Topic Review
Neuromyelitis Optica Spectrum Disorder
The term neuromyelitis optica was introduced by Eugène Devic and Fernand Gault in 1894, who first recognized the association of amaurosis and myelitis as a new clinical entity.
  • 529
  • 01 Sep 2021
Topic Review
Water Intoxication
Water intoxication, also known as water poisoning, hyperhydration, overhydration, or water toxemia, is a potentially fatal disturbance in brain functions that results when the normal balance of electrolytes in the body is pushed outside safe limits by excessive water intake. Under normal circumstances, accidentally consuming too much water is exceptionally rare. Nearly all deaths related to water intoxication in normal individuals have resulted either from water-drinking contests, in which individuals attempt to consume large amounts of water, or from long bouts of exercise during which excessive amounts of fluid were consumed. In addition, water cure, a method of torture in which the victim is forced to consume excessive amounts of water, can cause water intoxication. Water, just like any other substance, can be considered a poison when over-consumed in a brief period of time. Water intoxication mostly occurs when water is being consumed in a high quantity without adequate electrolyte intake. Excess of body water may also be a result of a medical condition or improper treatment; see "hyponatremia" for some examples. Water is considered one of the least toxic chemical compounds, with an LD50 of over 150 ml/kg in rats.
  • 529
  • 07 Nov 2022
Topic Review
Thrombotic Disorders and COVID-19 Vaccines
The COVID-19 pandemic caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has affected hundreds of millions worldwide, leading to nearly 7 million deaths globally, although now declared not a worldwide concern anymore. Strenuous research and analysis of various vaccine advances led to the development of multiple COVID-19 vaccines in less than a year from the pandemic’s beginning. Different types of vaccines, such as mRNA vaccines, DNA vaccines, viral vector vaccines, and inactivated virus vaccines have been approved and have shown a high degree of efficacy with variable protective levels of up to 95% (70–95% range) in vaccinated individuals against COVID-19.
  • 528
  • 01 Nov 2023
Topic Review
Tirzepatide in Type 2 Diabetes Mellitus
Tirzepatide is a novel once-a-week dual glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptor agonist, currently under trial to assess glycemic efficacy and safety in people with type 2 diabetes.
  • 527
  • 11 Nov 2021
Topic Review
Adipose-Derived Mesenchymal Stem Cells
Adipose-derived mesenchymal stem cells (AMSCs) are more accessible and easier to collect from subcutaneous tissue, they can be collected in large quantities, with less morbidity of the patients, via lipoaspirates or adipose tissue biposy, they are easily isolated, and can simply be expanded in vitro. Moreover, AMSCs have been shown to be immunoprivileged, with low risk of rejection, and more genetically stable in long term culture, with a greater proliferative rate than BM-MSCs.
  • 526
  • 14 Jan 2022
Topic Review
Bone Biochemical Immune Parameters in Marrow Immune Microenvironment
The bone marrow (BM), the major hematopoietic organ in humans, consists of a pleiomorphic environment of cellular, extracellular, and bioactive compounds with continuous and complex interactions between them, leading to the formation of mature blood cells found in the peripheral circulation. The bone marrow (BM) microenvironment regulates normal hematopoiesis and exerts variable activity in various inflammatory, toxic, autoimmune, or neoplastic diseases and conditions. It has a major role in the pathogenesis of BM failure syndromes and particularly of myelodysplastic syndromes (MDS).
  • 525
  • 28 Nov 2022
Topic Review
Vitamin D and CKD with Bone Disorder
Chronic kidney disease (CKD) is a highly prevalent condition worldwide in which the kidneys lose many abilities, such as the regulation of vitamin D (VD) metabolism. Moreover, people with CKD are at a higher risk of multifactorial VD deficiency, which has been extensively associated with poor outcomes, including bone disease, cardiovascular disease, and higher mortality.
  • 523
  • 19 Apr 2023
Topic Review
Parent-infant Psychotherapy
Psychodynamic Therapy with Infants and Parents (abbr. PTIP) aims to relieve emotional disturbances within the parent(s), the baby, and/or their interaction, for example, postnatal depression and anxiety, infant distress with breastfeeding and sleep, and attachment disorders. It rests on attachment theory and psychoanalysis. Sigmund Freud suggested that a modification of his method could be applied to children, and child analysis was introduced in the 1920s by [Anna Freud].., [Melanie Klein], and Hermine Hug von Hellmuth. Klein speculated on infantile experiences to understand her patients' disorders but she did not practice PTIP. Donald Winnicott, a pediatrician and analyst, focused on the mother-baby interplay in his theorizing and his brief parent-child consultations, but he did not work with PTIP.
  • 521
  • 07 Nov 2022
Topic Review
The P2X7R and Diabetic Retinopathy
Diabetes is a worldwide emergency. Its chronic complications impose a heavy burden on patients, health systems, and on society as a whole. Diabetic retinopathy is one of the most common and serious complications of diabetes, and an established risk factor for blindness in adults. Over 15 years of investigation led to the identification of vascular endothelial growth factor (VEGF) as a main pathogenic factor in diabetic retinopathy and to the introduction of highly effective anti-VEGF-based therapies, such as the monoclonal antibody bevacizumab or its fragment ranibizumab, which helped to prevent diabetes-related blindness in millions of patients. Recently, a pathogenic role for uncontrolled increases in the extracellular ATP concentration (eATP) and for overactivation of the purinergic receptor P2X7 (P2X7R) has been suggested. The P2X7R is an eATP-gated plasma membrane channel expressed in multiple tissues and organs, with a pleiotropic function in inflammation, immunity, cancer, and hormone and growth factor release. P2X7R stimulation or overexpression positively regulate the secretion and buildup of VEGF, thus promoting neo-angiogenesis in a wide variety of disease processes.
  • 518
  • 13 Jul 2021
Topic Review
Resveratrol in Bone Regeneration
The natural polyphenol Resveratrol (RSV) claims numerous positive effects on health due to the well documented biological effects demonstrating its potential as a disease-preventing agent and as adjuvant for treatment of a wide variety of chronic diseases. Since several studies, both in vitro and in vivo, have highlighted the protective bone aptitude of RSV both as promoter of osteoblasts’ proliferation and antagonist of osteoclasts’ differentiation, they could be interesting in view of applications in the field of dentistry and maxillofacial surgery.
  • 518
  • 14 Jul 2021
Topic Review
Microbiome-Brain-Gut Axis in the Pathogenesis of Depressive Disorder
The brain and gut, through the microbiota, can influence each other’s functions via neuroendocrine, neuroimmune and sensory-neural molecular pathways. Moreover, both hypothalamic-pituitary-adrenal (HPA) axis and gut peptides might be involved in this communication system.
  • 517
  • 18 May 2022
Topic Review
SARS-CoV-2 in Thyroid Disorders
A properly functioning thyroid gland is crucial for health, influencing growth, neuronal development, reproduction and as a key regulator of energy metabolism, although thyroid disorders/diseases are extremely common and affect 200 million people worldwide. Viral infection may represent one of the major environmental factors related to common thyroid disorders, including subacute thyroiditis (SAT), nonthyroidal illness syndrome (NTIS) and autoimmune thyroid diseases (AITDs) including Graves’ disease (GD) and Hashimoto’s thyroiditis (HT).
  • 516
  • 08 May 2023
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