The role of nanoparticles in bleed air in the etiology of Aerotoxic Syndrome: A review of cabin air-quality studies of 2003-2023.

Aerotoxic Syndrome may develop as a result of chronic, low-level exposure to organophosphates (OPs) and volatile organic compounds in the airplane cabin air, caused by engine oil leaking past wet seals. Additionally, acute high-level exposures, so-called "fume events," may occur. However, air quality monitoring studies concluded that levels of inhaled chemicals might be too low to cause adverse effects.

The role of carbon monoxide in aerotoxic syndrome.

Chronic low-level exposure to toxic compounds in airplane cabin air may result in Aerotoxic Syndrome (AS). Aetiologic agents are organophosphates and numerous volatile organic hydrocarbons originating from leaks of engine oil and hydraulic fluids. Despite a documented history spanning decades, the role of carbon monoxide remains controversial.

Chronic Traumatic Encephalopathy in Soccer Players: Review of 14 Cases.

Objective: Exposure to repetitive sports-related concussions or (sub)concussive head trauma may lead to chronic traumatic encephalopathy (CTE). Which impact (heading or concussion) poses the greatest risk of CTE development in soccer players?

Design: Narrative review.

Setting: Teaching hospital and University of Applied sciences.

Health consequences of exposure to aircraft contaminated air and fume events: a narrative review and medical protocol for the investigation of exposed aircrew and passengers.

Thermally degraded engine oil and hydraulic fluid fumes contaminating aircraft cabin air conditioning systems have been well documented since the 1950s. Whilst organophosphates have been the main subject of interest, oil and hydraulic fumes in the air supply also contain ultrafine particles, numerous volatile organic hydrocarbons and thermally degraded products. We review the literature on the effects of fume events on aircrew health.

Fetuses and infants with Amyoplasia congenita in congenital Zika syndrome: The evidence of a viral cause. A narrative review of 144 cases.

Objectives: Amyoplasia congenita is the most frequent type of arthrogryposis causing fetal hypokinesia, leading to congenital contractures at birth. The pathogenesis is thought to be impaired blood circulation to the fetus early in pregnancy, with hypotension and hypoxia damaging the anterior horn cells. In animal studies however a prenatal infection with a poliomyelitis-like viral agent was demonstrated.

Susceptibility-Weighted MRI and Microbleeds in Mild Traumatic Brain Injury: Prediction of Posttraumatic Complaints?

Background: Only in 7-15% of patients with mild traumatic brain injury (mTBI), traumatic CT-abnormalities are found. Nevertheless, 40% of mTBI patients suffer from posttraumatic complaints not resolving after 6 months. We discuss the ability of susceptibility-weighted imaging (SWI), sensitive for microbleeds, to detect more subtle brain abnormalities.

A Child Presenting with a Glasgow Coma Scale Score of 13: Mild or Moderate Traumatic Brain Injury? A Narrative Review.

Objective: The objective of this article was to compare children with traumatic brain injury (TBI) and Glasgow Coma Scale score (GCS) 13 with children presenting with GCS 14 and 15 and GCS 9 to 12.

Data Source: We searched PubMed for clinical studies of children of 0 to 18 years of age with mild TBI (mTBI) and moderate TBI, published in English language in the period of 2000 to 2020.

Study Selection: We selected studies sub-classifying children with GCS 13 in comparison with GCS 14 and 15 and 9 to 12.

Three patients with probable aerotoxic syndrome.

"Aerotoxic syndrome" is a debated entity. Regulatory authorities consider long-term health effects to be an unlikely consequence of exposure to contaminated air because several air quality monitoring studies report low concentrations of toxic chemicals in cabin air. We describe two pilots and one flight attendant, who developed ill health during their flying career which improved after cessation of flying.

Cognitive impairment and associated loss in brain white microstructure in aircrew members exposed to engine oil fumes.

Cabin air in airplanes can be contaminated with engine oil contaminants. These contaminations may contain organophosphates (OPs) which are known neurotoxins to brain white matter. However, it is currently unknown if brain white matter in aircrew is affected.

Relationship between cardiovascular risk as predicted by established risk scores versus plaque progression as measured by serial intravascular ultrasound in left main coronary arteries.

Background: Intravascular ultrasound (IVUS) is increasingly used as an end point in studies aimed at reducing progression or inducing regression of coronary artery disease. However, data linking serial changes by IVUS with clinical outcomes are scarce.

Methods And Results: In the absence of a validated risk score for secondary prevention, we compared 3 established risk scores for primary prevention--PROCAM, SCORE, and Framingham--with plaque progression and lumen reduction as assessed with serial IVUS (follow-up, 18+/-9 months) in atherosclerotic left main coronary arteries of 56 patients with established atherosclerosis.

Extended extradural spinal arachnoid cyst: an unusual cause of progressive spastic paraparesis.

A 15-year old girl presented with a slowly progressive spastic paraparesis since the age of 12. Creatine kinase was slightly increased. Muscle biopsy carried out during tendon surgery for severe toe-walking showed 'myopathic' changes.

Parkinsonism, pyramidal signs, polyneuropathy, and cognitive decline after long-term occupational solvent exposure.

It is well known that exposure to manganese, solvents, or carbon monoxide in an occupational setting may lead to central nervous system damage and parkinsonism. The most important solvents in this respect are methanol, toluene, carbon disulfide, and n-hexane. We describe three patients who had been exposed to various solvents for more than 20 years (25, 34, and 46 years).

Cytochrome b5 reductase deficiency, an uncommon cause of cyanosis.

A patient with cyanosis due to methaemoglobinaemia caused by cytochrome b5 reductase deficiency is described. Investigation of his family confirmed transmission of this disorder as an autosomal recessive trait. The consequences of this rare condition are discussed.

Reconstruction of residual alveolo-palatal bone defects in cleft patients. A retrospective study.

The results of reconstruction of residual alveolo-palatal bone defects in 40 patients are evaluated clinically and radiographically in a retrospective study. Age at the time of surgery varied from 7.4 to 32.

Congenital cervical spinal muscular atrophy: a non-familial, non progressive condition of the upper limbs.

Two patients with congenital cervical spinal muscular atrophy had symmetrical severe muscle weakness and wasting confined to the upper limbs, areflexia and congenital contractures. The shoulders were internally rotated, elbows extended and wrists flexed. There were no sensory or bulbar symptoms, scoliosis, long tract signs or lower limb involvement.

Chronic lymphocytic leukaemia presenting as renal failure with lymphocytic infiltration of the kidneys.

A case of renal failure is reported in a 60-yr-old male as the first clinical manifestation of chronic lymphocytic leukaemia (CLL). It appeared to be due to a massive interstitial infiltration of both kidneys by small lymphocytes. Combination chemotherapy consisting of monthly courses of cyclophosphamide, vincristine and prednisone (COP), resulted in a rapid improvement of the renal function and in an apparent haematological and clinical remission of the CLL.

Is there involvement of the central nervous system in hereditary sensory radicular neuropathy?

There is pathological evidence that hereditary sensory radicular neuropathy (HSN type I) is a disorder related to multi-system atrophy with marked cell loss in the cerebral cortex, thalamus, brain stem and cerebellum. We report here a clinical study of a case of HSN-I including audiometric testing, autonomic functions, electromyography, transcranial magnetic stimulation and magnetic resonance imaging of the brain. There were no signs of central nervous system involvement.

A case of idiopathic palatal myoclonus: treatment with sodium valproate.

We describe a case of idiopathic palatal myoclonus with normal CT and NMR results, especially of the region of the inferior olive. The effective treatment with sodium valproate is reported and its relation with GABA is discussed.

Selective low-dose thrombolysis in patients with an axillary-subclavian vein thrombosis.

The treatment of axillary-subclavian vein thrombosis is still controversial. Development of a post-phlebitic syndrome in patients treated conservatively occurs in many patients. Therefore more aggressive treatment is advocated.

Sternocostoclavicular hyperostosis or pustulotic arthroosteitis.

We describe a 68-year-old woman who had suffered pain, swelling, heat, and redness in the region of both clavicles for the last 2 years. Her erythrocyte sedimentation rate was markedly elevated; tests for rheumatoid factor were negative. At surgical exploration, ankylosis of the sternoclavicular joints, especially on the left side, was found.