Standardized Approach to Pediatric Post-COVID Syndrome and Its Impact on Children and Adolescents: A Perspective From a Tertiary Center.

Background: Pediatric post-COVID syndrome (pPCS) affects a notable number of children. This study aims to describe its clinical manifestations, biopsychosocial impact and management strategies.

Methods: A prospective, single-center study was conducted to analyze data of pPCS patients presenting to our institution between May 2021 and November 2022.

The Development of a Chatbot Technology to Disseminate Post-COVID-19 Information: Descriptive Implementation Study.

Background: Post-COVID-19, or long COVID, has now affected millions of individuals, resulting in fatigue, neurocognitive symptoms, and an impact on daily life. The uncertainty of knowledge around this condition, including its overall prevalence, pathophysiology, and management, along with the growing numbers of affected individuals, has created an essential need for information and disease management. This has become even more critical in a time of abundant online misinformation and potential misleading of patients and health care professionals.

A population-based serological study of post-COVID syndrome prevalence and risk factors in children and adolescents.

Post-COVID syndrome remains poorly studied in children and adolescents. Here, we aimed to investigate the prevalence and risk factors of pediatric post-COVID in a population-based sample, stratifying by serological status. Children from the SEROCoV-KIDS cohort study (State of Geneva, Switzerland), aged 6 months to 17 years, were tested for anti-SARS-CoV-2 N antibodies (December 2021-February 2022) and parents filled in a questionnaire on persistent symptoms in their children (lasting over 12 weeks) compatible with post-COVID.

Persistent symptoms after SARS-CoV-2 infection in children: a cross-sectional population-based serological study.

Objectives: To estimate the prevalence of children and adolescents reporting persistent symptoms after SARS-CoV-2 infection.

Design: A random sample of children and adolescents participated with their family members to a serological survey including a blood drawing for detecting antibodies targeting the SARS-CoV-2 nucleocapsid (N) protein and a questionnaire on COVID-19-related symptoms experienced since the beginning of the pandemic.

Setting: The study took place in the canton of Geneva, Switzerland, between June and July 2021.

[A new challenge: post-COVID syndrome in teenagers].

Post-COVID syndrome (or long COVID) is a set of persistent symptoms occurring after a documented SARS-CoV-2 infection. Children and adolescents are also affected, with similar symptoms than adults. To date there is no clinical or biological parameter allowing to confirm the diagnosis, which relies on the presence of typical symptoms associated with a suggestive temporality, in the absence of any other explanation.

Immunological Assessment of Pediatric Multisystem Inflammatory Syndrome Related to Coronavirus Disease 2019.

Background: Recently, cases of multisystem inflammatory syndrome in children (MIS-C) associated with coronavirus disease 2019 (COVID-19) have been reported worldwide. Negative polymerase chain reaction (RT-PCR) testing associated with positive serology in most of the cases suggests a postinfectious syndrome. Because the pathophysiology of this syndrome is still poorly understood, extensive virological and immunological investigations are needed.

Surgical Repair of Mitral Valve Disease in Children: Perioperative Changes in Respiratory Function.

Objective: To assess the profile of changes in airway and respiratory tissue mechanics within a follow-up study performed in children with mitral valve disease, before and after surgical valve repair.

Design: Perioperative measurements in a prospective, consecutive cross-sectional study.

Setting: University hospital, tertiary care teaching hospital

Participants: The study comprised 24 children with congenital or post-rheumatic mitral valve insufficiency.

[French general practitioners and electromagnetic fields].

Objective: To assess the perception of risk of general practitioners (GPs) about electromagnetic fields (EMF), their sources of information, as well as their patients' level of concern.

Methods: Six hundred French GPs were selected according to the quotas method. They were asked to answer 24 items via an electronic questionnaire using the Computer-Assisted Web Interviewing (CAWI) method.

Considering the role of pyruvate in tumor cells during hypoxia.

Impairment of oxygen supply occurs in many pathological situations. In the case of cancer, both chronic and acute hypoxic areas are found in the tumor. Tumor hypoxia is associated with poor clinical prognoses and is correlated with tumor growth and metastasis development.

Pyruvate reduces DNA damage during hypoxia and after reoxygenation in hepatocellular carcinoma cells.

Pyruvate is located at a crucial crossroad of cellular metabolism between the aerobic and anaerobic pathways. Modulation of the fate of pyruvate, in one direction or another, can be important for adaptative response to hypoxia followed by reoxygenation. This could alter functioning of the antioxidant system and have protective effects against DNA damage induced by such stress.

[Public access to information about the services and quality of care in public hospitals: the need for methodologic clarity. A survey of 44 university hospital directors and administrators].

Introduction: For the past eight years, the Ministry of Health has released information about the services and quality of care in public hospitals, in response to the increasing concern about hospital performance expressed by patient associations. The press publishes hospital ratings based on this information. This survey asked hospital administrators about their views of communication on this topic.

Vitamin B12 (cobalamin) deficiency in elderly patients.

Vitamin B12 or cobalamin deficiency occurs frequently (> 20%) among elderly people, but it is often unrecognized because the clinical manifestations are subtle; they are also potentially serious, particularly from a neuropsychiatric and hematological perspective. Causes of the deficiency include, most frequently, food-cobalamin malabsorption syndrome (> 60% of all cases), pernicious anemia (15%-20% of all cases), insufficient dietary intake and malabsorption. Food-cobalamin malabsorption, which has only recently been identified as a significant cause of cobalamin deficiency among elderly people, is characterized by the inability to release cobalamin from food or a deficiency of intestinal cobalamin transport proteins or both.

The syndrome of food-cobalamin malabsorption revisited in a department of internal medicine. A monocentric cohort study of 80 patients.

BACKGROUND: To date, only case reports or small studies have documented the syndrome of food-cobalamin malabsorption in specific populations of patients or situations. In this paper, we present the data from 80 unselected patients with cobalamin deficiency related to food-cobalamin malabsorption. METHODS: We studied 80 patients with well-established food-cobalamin malabsorption who were extracted from an observational cohort study (1995-2000) of 127 consecutive patients with cobalamin deficiency and who were followed in a department of internal medicine.

Pyruvate reverses metabolic effects produced by hypoxia in glioma and hepatoma cell cultures.

The intervention of pyruvate in glucose metabolism was investigated during hypoxic stress in tumour cell cultures having respiratory capacities under normoxic conditions. Results obtained with nuclear magnetic resonance (NMR) spectroscopy showed that, under normoxic conditions, rat glioma C6 and human hepatoma Hep G2 cell cultures metabolised [(13)C(1)]glucose into lactate, alanine, glutamate and other less abundant metabolites, as already known from the literature. In the absence of pyruvate, during hypoxia or cyanide poisoning, both cell types dramatically decreased the label into glutamate and accumulated [(13)C(3)]glycerol-3-phosphate.