27 research outputs found
Implementation of a solution based approach for child protection: A professionals’ perspective
A child protection system is not just about minimizing child abuse but also maximizing welfare (Munro, 2008). Therefore, the new Youth Act in the Netherlands promotes empowerment in child protection (Ministry of Health, Welfare and Sport & Ministry of Security and Justice, 2014). The last decade, empowering child protection services was dominated by the Signs of Safety (SoS) approach of Andrew Turnell and Steve Edwards (1999), a strength-based method with a strong client focused perspective. The current study evaluates a multilevel implementation process of a SoS approach within a Child Protection Service (CPS) in the Netherlands as pe
Alginate microspheres containing temperature sensitive liposomes (TSL) for MR-guided embolization and triggered release of doxorubicin
Objective
The objective of this study was to develop and characterize alginate microspheres suitable for embolization with on-demand triggered doxorubicin (DOX) release and whereby the microspheres as well as the drug releasing process can be visualized in vivo using MRI.
Methods and Findings
For this purpose, barium crosslinked alginate microspheres were loaded with temperature sensitive liposomes (TSL/TSL-Ba-ms), which release their payload upon mild hyperthermia. These TSL contained DOX and [Gd(HPDO3A)(H2O)], a T1 MRI contrast agent, for real time visualization of the release. Empty alginate microspheres crosslinked with holmium ions (T2* MRI contrast agent, Ho-ms) were mixed with TSL-Ba-ms to allow microsphere visualization. TSL-Ba-ms and Ho-ms were prepared with a homemade spray device and sized by sieving. Encapsulation of TSL in barium crosslinked microspheres changed the triggered release properties only slightly: 95% of the loaded DOX was released from free TSL vs. 86% release for TSL-Ba-ms within 30 seconds in 50% FBS at 42°C. TSL-Ba-ms (76 ± 41 μm) and Ho-ms (64 ± 29 μm) had a comparable size, which most likely will result in a similar in vivo tissue distribution after an i.v. co-injection and therefore Ho-ms can be used as tracer for the TSL-Ba-ms. MR imaging of a TSL-Ba-ms and Ho-ms mixture (ratio 95:5) before and after hyperthermia allowed in vitro and in vivo visualization of microsphere deposition (T2*-weighted images) as well as temperature-triggered release (T1-weighted images). The [Gd(HPDO3A)(H2O)] release and clusters of microspheres containing holmium ions were visualized in a VX2 tumor model in a rabbit using MRI.
Conclusions
In conclusion, these TSL-Ba-ms and Ho-ms are promising systems for real-time, MR-guided embolization and triggered release of drugs in vivo
Child protection cases, one size fits all? Cluster analyses of risk and protective factors
_Background:_ To provide effective tailor made case management in Child Protection Services (CPS) a insight is needed into the specific characteristics of the target group. Using the ecological perspective of maltreatment, this study explored poorly known characteristics of the CPS population.
_Objective:_ To distinguish CPS subgroups based on risk and protective factors enables tailor made case management that fits the specific needs of these subgroups. Participants and setting: We studied 250 Dutch CPS cases of family supervision by court order that had completed the LIRIK and Action Plan checklists in August 2014–March 2015.
_Methods:_ This quantitative study analyzed risk and protective factors for children and parents reported in client files. Subgroups were identified by two-step cluster analyses. Chi-square analyses identified relations between parental risk subgroups and other groups.
_Results:_ Building on the interplay between risk and protective factors on the levels of child, parent and environment, we found five distinct subgroups in the CPS population. The most vulnerable is parents with multiple problems (31%) or socio-economic problems (13%). Parts of both subgroup have limited protective factors. Parents with major life events (16%) or poor parenting (13%) are characterized by single-level problems. One subgroup (28%), the unaccepted, has no parental risk factors registered.
_Conclusions:_ Studying client files can lead to a better understanding of the healthcare needs of the CPS population. To develop and implement more effective case management requires constant dialogue between science, policy, and the experiences of both clients and professional
Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures
Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo
Surgical stress and accelerated tumor growth
Background: Delay in the initiation of radiotherapy after surgery is associated with an increase in local regional recurrence. A possible mechanism might be that remaining tumor cells proliferate significantly faster as a result of induced angiogenic cytokines. The growth rate of tumors arising from the inoculation of L44 tumor cells in the wound bed after surgical removal of L44 tumors was determined. Materials and Methods: L44 tumors growing in the flank of female BN rats were surgically removed. In the wound. bed, 5x10(6) L44 cells, harvested from the in vitro cell line, were injected. L44 cells were also injected in the contralateral flank and in control rats with and without surgical intervention. Tumor volumes as a function of time after injection of cells were recorded. From the attained volume at day 7, the cell doubling time was calculated, assuming 109 cells per cm Results: Tumors arising in the wound bed had the fastest growth rate as compared to the tumors in the contralateral flank or tumors in control rats with or without surgical intervention. Conclusion: The results clearly indicate accelerated tumor growth after surgical stress. This indicates that delay in the initiation of radiotherapy after surgery with tumor cells remaining, results in a larger tumor burden and hence a higher probability of local recurrence.</p
Surgical stress and accelerated tumor growth
Background: Delay in the initiation of radiotherapy after surgery is associated with an increase in local regional recurrence. A possible mechanism might be that remaining tumor cells proliferate significantly faster as a result of induced angiogenic cytokines. The growth rate of tumors arising from the inoculation of L44 tumor cells in the wound bed after surgical removal of L44 tumors was determined. Materials and Methods: L44 tumors growing in the flank of female BN rats were surgically removed. In the wound. bed, 5x10(6) L44 cells, harvested from the in vitro cell line, were injected. L44 cells were also injected in the contralateral flank and in control rats with and without surgical intervention. Tumor volumes as a function of time after injection of cells were recorded. From the attained volume at day 7, the cell doubling time was calculated, assuming 109 cells per cm Results: Tumors arising in the wound bed had the fastest growth rate as compared to the tumors in the contralateral flank or tumors in control rats with or without surgical intervention. Conclusion: The results clearly indicate accelerated tumor growth after surgical stress. This indicates that delay in the initiation of radiotherapy after surgery with tumor cells remaining, results in a larger tumor burden and hence a higher probability of local recurrence
Door bestraling geinduceerd arterieel vaatlijden
Arterial occlusive disease developed after radiation therapy in three patients: a woman aged 56 had a sensation of heaviness in her right arm and bluish-black discolorations of fingers 3 years after radiation therapy for breast carcinoma, and two men aged 46 and 45 years had intermittent claudication 23 and 14 years, respectively, after radiation therapy for testicle malignancy. After creation of a bypass, the symptoms subsided. Radiation-induced arterial disease is a rare complication after radiotherapy and usually presents after a latent period of several years. Arterial lesions induced by radiotherapy may be distinguished from atherosclerotic lesions by their atypical localization, limited to the irradiated sites, and occurrence at an earlier age. Symptoms may be masked by pain, limitation of motion, nerve root damage and lymphoedema and may therefore not always be recognized. Indications for treatment are identical to those for atherosclerotic occlusive disease, but due to increased risk of restenosis, rethrombosis and graft infection, percutaneous transluminal angioplasty (with or without stent), endarterectomy or venous bypass surgery should be preferred to prosthetic bypass material