Association Between Neonates With Laryngomalacia and Neonatal Abstinence Syndrome.

Objective: Laryngomalacia (LM) is the most common congenital anomaly of the larynx. The cause of LM is still largely unknown, but a neurological mechanism has gained the most acceptance. There have not been any studies examining the prevalence of LM in infants with Neonatal Abstinence Syndrome (NAS).

Predictors of a Normal Sleep Study in Healthy Children with Sleep Disordered Breathing Symptoms.

Objective: To determine the prevalence and characteristics of children with normal elective polysomnography for obstructive sleep disordered breathing (oSDB) based on the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) guidelines.

Study Design: In this retrospective cohort study, we identified patients ages 2 to 18 who underwent diagnostic polysomnography (PSG) ordered by our otolaryngology department for SDB between 2012 and 2018.

Setting: All patients were seen by otolaryngologists at an urban tertiary safety net hospital.

Cutaneous Metastases: A Case Study on Clinical Care for Patients.

Cutaneous metastases (CMs) signal the spread of a primary tumor to the skin and dermis, particularly in patients with melanoma or with breast, lung, or gastrointestinal cancers. Although these lesions may present as superficial and painless, some CMs may lead to ulceration, drainage, and discomfort, causing distress to patients. Oncology nurses require knowledge about the clinical presentation of CMs, including incidence, pathophysiology, diagnostic evaluation, and complex symptomatology, as well as standard treatment and care for patients.

Gain-of-function mutations in GATA6 lead to atrial fibrillation.

Background: The genetic basis of atrial fibrillation (AF) and congenital heart disease remains incompletely understood.

Objective: We sought to determine the causative mutation in a family with AF, atrial septal defects, and ventricular septal defects.

Methods: We evaluated a pedigree with 16 family members, 1 with an atrial septal defect, 1 with a ventricular septal defect, and 3 with AF; we performed whole exome sequencing in 3 affected family members.

A qualitative study of perceptions of determinants of disease burden among young patients with type 1 diabetes and their parents in South India.

Background: Diabetes is a leading threat to public health in India. A huge prevalence of type 1 diabetes among young patients is documented in literature; India is one of the countries with the highest number of new cases per year (10,900), of which 3-4 million face poverty along with diabetes.

Objective: The aim of this study was to explore the perceptions of determinants of the disease burden among young patients with type 1 diabetes and their parents.

Scale-up of mammalian cell culture using a new multilayered flask.

A growing number of cell-based applications require large numbers of cells. Usage of single layer T-flasks, that are adequate during small-scale expansion, may become cumbersome, laborious and time-consuming when large numbers of cells are required. To address this need, the performance of a new multi-layered cell culture vessel to facilitate easy scale up of cells from single layered T-flasks will be discussed.

Human pancreatic islet-derived progenitor cell engraftment in immunocompetent mice.

The potential for the use of stem/progenitor cells for the restoration of injured or diseased tissues has garnered much interest recently, establishing a new field of research called regenerative medicine. Attention has been focused on embryonic stem cells derived from human fetal tissues. However, the use of human fetal tissue for research and transplantation is controversial.

Insulinotropic hormone glucagon-like peptide-1 differentiation of human pancreatic islet-derived progenitor cells into insulin-producing cells.

Glucagon-like peptide-1 (GLP-1) is an intestinal incretin hormone, derived from the processing of proglucagon, that exerts insulinotropic actions on insulin-producing pancreatic islet beta-cells. Recently GLP-1 was shown to stimulate the growth and differentiation (neogenesis) of beta-cells and appears to do so by inducing the expression of the homeodomain protein IDX-1 (islet duodenum homeobox-1; also known as PDX-1, pancreatic and duodenal homeobox gene; and as IPF-1, insulin promoter factor), which is required for pancreas development and the expression of beta-cell-specific genes. Earlier we identified multipotential progenitor cells in the islet and ducts of the pancreas, termed nestin-positive islet-derived progenitor cells (NIPs).

Nestin-positive progenitor cells derived from adult human pancreatic islets of Langerhans contain side population (SP) cells defined by expression of the ABCG2 (BCRP1) ATP-binding cassette transporter.

The disease diabetes mellitus arises as a consequence of a failure of the beta-cells in the islets of Langerhans of the pancreas to produce insulin in the amounts required to meet the needs of the body. Whole pancreas or islet transplants in patients with severe diabetes effectively restore insulin production. A lack of availability of donor pancreata requires the development of alternative sources of islets such as the ex vivo culture and differentiation of stem/progenitor cells.