[Bioethics in Morocco: An example of research on schizophrenia and the history of the Casablanca biomedical research ethics committee].

The ethics committee for biomedical research of Casablanca (CERBC) was born within the Faculty of Medicine and Pharmacy of Casablanca (FMPC) in Morocco in 1989, following the impetus of some teachers who were aware, from their specialties and their concerns, to the protection of people who took part in clinical trials. From the start, the committee faced difficulties in giving itself regulatory legitimacy. Subsequently, it was necessary to make a major educational and communication effort with the medical staff in order to explain the notions of ethics and bioethics, which were unknown at the time to most of the doctors at the University Hospital.

Missing and dismissing the impact of periods. Outcomes of focus groups of teens with period concerns.

Background: Despite a high prevalence, menstrual issues are often normalised or trivialised and undermanaged in young people (YP). Uncontrolled dysmenorrhoea and heavy menstrual bleeding have a vastly negative impact on the quality of life of YP, especially when these issues are compounded by the social and emotional complexities of navigating adolescence.

Objectives: The Longitudinal Study of Teens with Endometriosis, Period and Pelvic Pain (LongSTEPPP) project is a 5-year study aiming to understand factors that contribute to endometriosis, period and pelvic pain in YP and to examine long-term outcomes.

[Abnormal uterine bleeding and hemostasis disorders].

Abnormal uterine bleeding (AUB) are common in adolescents and young adults. They may be secondary to inherited bleeding disorders such as von Willebrand disease or platelet function disorders. These conditions are often under-recognized, leading to diagnostic delays and inadequate management.

Effect of cardiolipin on the lamellarity and elongation of liposomes hydrated in PBS.

Lamellarity and shape are important factors in the formation of vesicles and determine their role in biological systems and pharmaceutical applications. Cardiolipin (CL) is a major lipid in many biological membranes and exerts a great influence on their structural organization due to its particular structure and physico-chemical properties. Here, we used small-angle X-ray and neutron scattering to study the effects of CL with different acyl chain lengths and saturations (CL, CL, CL) on vesicle morphology and lamellarity in membrane models containing mixtures of phosphatidylcholine and phosphatidylethanolamine with different acyl chain lengths and saturations (C and C ).

[Early interventions for emotional regulation in adolescence, where are we?].

Adolescence is a vulnerable period for mental health. It is not easy to make a precise diagnosis during this period, as young people may present attenuated forms of psychiatric pathology, or on the contrary, a combination of several types of difficulties. Adopting a transdiagnostic and dimensional approach, based on clinical stages, and thus proposing interventions adapted to the severity of symptoms, is pertinent.

ATP-dependent conformational dynamics in a photoactivated adenylate cyclase revealed by fluorescence spectroscopy and small-angle X-ray scattering.

Structural insights into the photoactivated adenylate cyclases can be used to develop new ways of controlling cellular cyclic adenosine monophosphate (cAMP) levels for optogenetic and other applications. In this work, we use an integrative approach that combines biophysical and structural biology methods to provide insight on the interaction of adenosine triphosphate (ATP) with the dark-adapted state of the photoactivated adenylate cyclase from the cyanobacterium Oscillatoria acuminata (OaPAC). A moderate affinity of the nucleotide for the enzyme was calculated and the thermodynamic parameters of the interaction have been obtained.

Progestins as a Contributing Factor to Hepatocellular Adenoma: A Case Series and Literature Review.

Study Objective: To explore the role of progestins as potential contributing factors for the development of hepatocellular adenoma (HA) METHODS: We describe 3 cases of adolescents and young adults who developed HA while on norethindrone (NET), as well as their management. In addition, we provide a comprehensive literature review on the association between progestins and HA.

Results: Since 1983, 16 cases of HA in patients on progestins have been reported.

How myosin VI traps its off-state, is activated and dimerizes.

Myosin VI (Myo6) is the only minus-end directed nanomotor on actin, allowing it to uniquely contribute to numerous cellular functions. As for other nanomotors, the proper functioning of Myo6 relies on precise spatiotemporal control of motor activity via a poorly defined off-state and interactions with partners. Our structural, functional, and cellular studies reveal key features of myosin regulation and indicate that not all partners can activate Myo6.

Periods Shouldn't Bring Any Adolescents' World to a Full Stop. Period. An Online Survey of Adolescents' Experience of Menstruation.

Study Objective: Few studies have explored what specific outcome measures contained in assessment tools for period and pelvic pain are most relevant to adolescents. Co-design is a valuable method of ensuring input from those with lived experience. The Longitudinal Study of Teenagers with Endometriosis Periods and Pelvic Pain in Australia (LongSTEPPP) Co-Design Periods Survey comprised an anonymous online survey of adolescents' experience of menstruation to inform patient-reported outcome measures for the larger 5-year project.

Characteristics of Menstrual Suppression and Its Association With Mental Health in Transgender Adolescents.

Objective: To investigate the prevalence, nature, and effectiveness of menstrual suppression in transgender and gender-diverse (TGD) adolescents, and to explore whether there is an association between menstrual suppression and mental health in this population.

Methods: A cross-sectional study was performed of TGD adolescents assigned female at birth attending their first appointment at a specialist pediatric gender service between February 2017 and December 2021. Demographic and mental health data were collected using a questionnaire at the time of first visit, and information regarding menstrual suppression at this time was retrieved from the medical record.

Mechanism of small molecule inhibition of Plasmodium falciparum myosin A informs antimalarial drug design.

Malaria results in more than 500,000 deaths per year and the causative Plasmodium parasites continue to develop resistance to all known agents, including different antimalarial combinations. The class XIV myosin motor PfMyoA is part of a core macromolecular complex called the glideosome, essential for Plasmodium parasite mobility and therefore an attractive drug target. Here, we characterize the interaction of a small molecule (KNX-002) with PfMyoA.

Metastatic neuroblastoma in fertility preservation biopsy of clinically normal testis: a case report.

Research Question: Is there potential for the detection of neuroblastoma malignancy in testicular tissue extracted for fertility preservation for prepubertal boys at the time of tissue freezing?

Design: This is a case report.

Results: A boy was diagnosed with primary localized left adrenal neuroblastoma, with complete resection of the tumour. During 6 months' surveillance, he developed a relapse in the left para-renal region with progression of molecular and chromosomal features into undifferentiated neuroblastoma.

Cryo-EM structure of the folded-back state of human β-cardiac myosin.

To save energy and precisely regulate cardiac contractility, cardiac muscle myosin heads are sequestered in an 'off' state that can be converted to an 'on' state when exertion is increased. The 'off' state is equated with a folded-back structure known as the interacting-heads motif (IHM), which is a regulatory feature of all class-2 muscle and non-muscle myosins. We report here the human β-cardiac myosin IHM structure determined by cryo-electron microscopy to 3.

Short review on adverse childhood experiences, pelvic pain and endometriosis.

The exposure to adverse childhood experiences has been associated with the subsequent development of several chronic health conditions, including pelvic pain. Endometriosis is a chronic disease characterized by the growth of endometrial-like tissue outside of the uterus, and is considered a common cause of chronic pelvic pain and infertility in reproductive-age women. However, the topic of pelvic pain and endometriosis is fraught with many challenges.

Cryo-EM structure of the folded-back state of human β-cardiac myosin.

During normal levels of exertion, many cardiac muscle myosin heads are sequestered in an off-state even during systolic contraction to save energy and for precise regulation. They can be converted to an on-state when exertion is increased. Hypercontractility caused by hypertrophic cardiomyopathy (HCM) myosin mutations is often the result of shifting the equilibrium toward more heads in the on-state.

Vaginal bleeding in children: A retrospective audit at a tertiary paediatric gynaecology service.

Aim: The aim of this study was to describe the clinical features and investigations of vaginal bleeding in prepubertal children.

Methods: We performed a retrospective case series of children under the age of 10 who presented with vaginal bleeding to our institution between 2018 and 2019.

Results: There were 32 cases identified during the timeframe, with a mean age of 5.

BioSAXS at European Synchrotron Radiation Facility - Extremely Brilliant Source: BM29 with an upgraded source, detector, robot, sample environment, data collection and analysis software.

As part of its Extremely Brilliant Source (EBS) upgrade project, the ESRF's BM29 BioSAXS beamline was subject to a significant upgrade and refurbishment. In addition to the replacement of the beamline's original bending magnet source by a two-pole wiggler, leading to an increase in brilliance by a factor of 60, the sample environment of the beamline was almost completely refurbished: a vacuum-compatible Pilatus3 X 2M with a sensitive area of 253.7 mm × 288 mm and frame rates up to 250 Hz was installed, increasing the active area available and thus the q-scaling of scattering images taken; the sample changer was replaced with an upgraded version, allowing more space for customizable sample environments and the installation of two new sample exposure units; the software associated with the beamline was also renewed.

Pelvic pain in transmasculine adolescents receiving testosterone therapy.

Pelvic pain is a common complaint among individuals assigned female at birth. However, few studies have explored pelvic pain among transmasculine patients on gender-affirming testosterone treatment, and most of these were performed in adult populations. The aim of our study was to investigate the prevalence, risk factors, nature and treatment of pelvic pain among trans adolescents on testosterone.

Testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys: A 6 year experience from a Swiss multi-center network.

Testicular tissue cryopreservation is the only option of fertility preservation in prepubertal boys. While it is considered experimental, since procedures to obtain mature spermatozoa from prepubertal testicular tissue are still under development, testicular tissue cryopreservation programs have emerged worldwide. Our aim was to study the feasibility and safety of a program of testicular tissue cryopreservation in prepubertal and adolescent boys facing gonadotoxic treatment in three University hospitals in Switzerland.

The Association between Childhood Adversity and Risk of Dysmenorrhea, Pelvic Pain, and Dyspareunia in Adolescents and Young Adults: A Systematic Review.

Purpose: Exposure to adverse childhood experiences (ACEs) has been associated with poor health outcomes, including chronic pain. However, little is known about the potential impact on the development of pelvic pain in adolescents and young adults. This systematic review was conducted to explore the association between ACEs and dysmenorrhea, pelvic pain, and dyspareunia in adolescents and young adults.