Cell Painting and Chemical Structure Read-Across Can Complement Each Other for Rat Acute Oral Toxicity Prediction in Chemical Early Derisking.

Early derisking decisions in the development of new chemical compounds enable the identification of novel chemical candidates with improved safety profiles. In vivo studies are traditionally conducted in the early assessment of acute oral toxicity of crop protection products to avoid compounds, which are considered "very acutely toxic", with an in vivo lethal dose of 50% (LD50) ≤ 60 mg/kg body weight. Those studies are lengthy and costly and raise ethical concerns, catalyzing the use of nonanimal alternatives.

POEMS syndrome: a unique presentation and a diagnostic challenge.

We present the case of a previously well, 70-year-old lady who presented with gait deterioration and a clinicoradiological picture of myositis with T2-enhancement on MRI of the distal lower limb muscles. A muscle biopsy pointed towards neurogenic amyotrophy and a mixed demyelinating and axonal sensorimotor polyneuropathy was confirmed on nerve conduction studies. This was initially thought to be secondary to a myeloproliferative disorder but a positron emission tomography scan showed uptake in the left hip which corresponded to what was previously reported as a subchondral cyst on CT.

Breast arterial calcification on mammography and risk of coronary artery disease: a SCOT-HEART sub-study.

Aim: To assess the prevalence of breast arterial calcification (BAC) in patients who also underwent routine surveillance mammography, and to determine the association with cardiovascular risk factors, coronary artery calcification, and coronary artery disease on coronary computed tomography angiography (CCTA).

Materials And Methods: Four hundred and five female participants were identified who had undergone CCTA and subsequent mammography in the SCOT-HEART randomised controlled trial of CCTA in patients with suspected stable angina. Mammograms were assessed visually for the presence and severity of BAC.

Angelman Syndrome: Identification and Management.

Angelman syndrome (AS) is a neurobehavioral and genetically determined condition, which affects approximately 1 in 15,000 individuals. It is caused by various genetic mutations and deletions of the maternally-inherited UBE3A gene, on the 15q11-13 chromosomal region. The UBE3A gene, which encodes E3 ubiquitin ligase, shows tissue-specific imprinting, being expressed entirely from the maternal allele.

Paget's disease of bone in Malta. A preliminary survey.

We present the results of a preliminary survey carried out on 46 patients with Paget's disease of bone in Malta, 40 of whom were seen at a general medical outpatient clinic and a further 6 at a primary health care centre over the first 6 months of 1997. Various aspects of the disease have been analysed: prevalence, age and sex distribution, familial aggregates, mode of presentation, complications, pattern of bone involvement, a semi-quantitative assay of disease activity as assessed by bone scintigraphy and serum alkaline phosphatase (SAP) levels, and the factors that influenced disease activity. The results have been compared to previous published surveys on Paget's disease in different countries.