[Laser and light therapy for treatment of radiation dermatitis]. / Laser- und Lichttherapie zur Behandlung der Strahlendermatitis.

Radiation dermatitis (RD), an inflammatory skin disease that can be an unwanted side effect of medical radiation therapy (RT), most commonly occurs in patients undergoing cancer of the ENT, anal, and vulvar regions. The side effects on the skin and mucous membranes occur within a few weeks after the initiation of RT; however, late side effects can develop months to years after the RT. Therapeutically, various treatment approaches are considered such as pentoxifylline, hyperbaric oxygen therapy, laser therapy, and PBMT. In order to limit the reduced quality of life of patients with RT-induced fibrosis, supportive care consisting of pain therapy, psychological support, and wound care is necessary.

Cancer therapy-related vaginal toxicity: its prevalence and assessment methods-a systematic review.

PURPOSE: In 2020, almost 9 million women were diagnosed with cancer worldwide. Despite advancements in cancer treatment strategies, patients still suffer from acute and long-term side effects. This systematic review aims to evaluate the most frequently reported adverse effects in the genitourinary system and compare them across cancer types, treatment modalities, and evaluation methods. METHODS: Pubmed Central, SCOPUS, and Cochrane Library were searched following the PRISMA guidelines to identify all prospective and retrospective observational cohort studies and randomized controlled trials assessing vaginal side effects of adult female cancer patients. The study quality was evaluated using The Newcastle-Ottawa Scale or the Risk of Bias 2 tool, as appropriate. RESULTS: The most prevalent population was breast cancer patients, followed by gynaecological cancer patients. Overall, the focus was on vaginal dryness, while vaginal stenosis was the primary outcome in gynaecological cancer patients. Significant discrepancies were found in the frequency and severity of the reported adverse events. Most studies in this review evaluated side effects using patient-reported outcome measures (PROMs). CONCLUSIONS: Genitourinary syndrome of menopause following cancer treatment is most frequently documented in breast and gynaecological cancer patients, often focussing on vaginal dryness and vaginal stenosis based on PROMs. This review provides a complete overview of the literature, but more high-quality clinical trials are necessary to draw firm conclusions on acute and chronic vaginal toxicity following cancer treatment. IMPLICATIONS FOR CANCER SURVIVORS: This review could help improve the current preventive and curative management options for genitourinary complications, thereby increasing the patient's QoL and sexual functioning.

In silico synchronization reveals regulators of nuclear ruptures in lamin A/C deficient model cells.

The nuclear lamina is a critical regulator of nuclear structure and function. Nuclei from laminopathy patient cells experience repetitive disruptions of the nuclear envelope, causing transient intermingling of nuclear and cytoplasmic components. The exact causes and consequences of these events are not fully understood, but their stochastic occurrence complicates in-depth analyses. To resolve this, we have established a method that enables quantitative investigation of spontaneous nuclear ruptures, based on co-expression of a firmly bound nuclear reference marker and a fluorescent protein that shuttles between the nucleus and cytoplasm during ruptures. Minimally invasive imaging of both reporters, combined with automated tracking and in silico synchronization of individual rupture events, allowed extracting information on rupture frequency and recovery kinetics. Using this approach, we found that rupture frequency correlates inversely with lamin A/C levels, and can be reduced in genome-edited LMNA knockout cells by blocking actomyosin contractility or inhibiting the acetyl-transferase protein NAT10. Nuclear signal recovery followed a kinetic that is co-determined by the severity of the rupture event, and could be prolonged by knockdown of the ESCRT-III complex component CHMP4B. In conclusion, our approach reveals regulators of nuclear rupture induction and repair, which may have critical roles in disease development.

Detection of polychlorinated biphenyls and dioxins in Belgian cattle and estimation of the maximal potential exposure in humans through diets of bovine origin.

The methodology used to detect a polychlorinated biphenyl (PCB)/dioxin contamination in a Belgian cattle population that was not exposed to the PCB/dioxin incident in 1999 is presented. This population is directly or indirectly destined for human consumption. The methodology consisted in the systematic sampling of all calf-fattening stations and groups of cattle destined for export, and in the random sampling of slaughter cattle. This approach is compared to the method described in directive 96/23/CE from the European Council. When PCB concentrations exceeded the tolerance level of 0.2 micro g/g body fat (seven congeners with numbers 28, 52, 101, 118, 138, 153, and 180), dioxins (seventeen 2,3,7,8-substituted congeners of PCDD and PCDF) were also determined. The prevalence of Belgian slaughter cattle with PCB concentrations above this cutoff was 0.3% (95% confidence interval: 0.01-1.50%). Results indicate that the incidence of contamination was minimal, with environmental origin and common in all industrial countries. The maximal potential exposure of an adult human consumer to dioxins through diet of bovine origin is estimated in two worst-case scenarios. The first one corresponds to the consumption of contaminated food products by a small number of consumers during a long period (local consumption) and the second simulates the consumption of contaminated products by a large number of consumers during a short period (supermarket purchase). The theoretical maximum daily intake of dioxins in adults was respectively 374 and 123 pg TEQ/d. The estimated maximum increase of dioxin body burden corresponds to 7 pg TEQ/g fat in the local consumption scheme and 0.07 pg TEQ/g fat in the supermarket consumption scheme.

Prevalence of herds with young sows seropositive to pseudorabies (Aujeszky's disease) in northern Belgium.

In Belgium, pseudorabies in swine has been the subject of a mandatory eradication programme since 1993. From December 1995 to February 1996, a survey was conducted in the five provinces of northern Belgium to estimate the provincial pseudorabies virus (PRV) herd seroprevalence. Seven hundred and twenty randomly selected herds were included in this survey. To detect recently infected animals, only young sows were sampled. The results show that 44% of these herds had an important number of PRV-seropositive young sows. The highest herd seroprevalence was observed in West Flanders (68%), followed by Antwerp (60%), East Flanders (43%), Limburg (18%), and Flemish Brabant (8%). Assuming a diagnostic test sensitivity and specificity of 95% and 99%, respectively, and a true PRV within-herd prevalence of 43%, the overall true PRV herd prevalence was estimated to be 35%. A logistic multiple-regression revealed that the presence of finishing pigs was associated with a two-fold increase in odds of a herd being seropositive (odds ratio (OR)=2.07, 95% confidence interval (CI) = 1.31-3.26); a breeding herd size > or =70 sows was associated with a four-fold increase in odds of a herd being seropositive (OR = 4.09, 95% CI = 2.18-7.67); a pig density in the municipality of >455 pigs/km2 was associated with a 10-fold increase in odds of a herd being seropositive (OR = 9.68, 95% CI = 5.17-18.12). No association was detected between the PRV herd seroprevalence and purchase policy of breeding pigs (purchased gilts, or use of homebred gilts only).