Publications by authors named "Pols H"

In 1851, the colonial administration of the Dutch East Indies established a two-year program to educate young Javanese men to become vaccinators in Batavia (today's Jakarta). During the following sixty years, the medical curriculum was expanded several times; in 1913, it consisted of a ten-year program. In 1927, the Batavia Medical School, granting degrees equivalent to those of Dutch university-affiliated medical schools, commenced operations.

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We present the multiple post-modification of organic macrocycles and cages, introducing functional groups into two- and three-dimensional supramolecular scaffolds bearing fluorine substituents, which opens up new possibilities in multi-step supramolecular chemistry employing the vast chemical space of readily available isocyanates. The mechanism and scope of the reaction that proceeds after isocyanate addition to the benzylamine motif via an azadefluorination cyclisation (ADFC) were investigated using DFT calculations, and a series of aromatic isocyanates with different electronic properties were tested. The compounds show excellent chemical stability and were fully characterised.

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Heat shock proteins 90 (Hsp90) are promising therapeutic targets due to their involvement in stabilizing several aberrantly expressed oncoproteins. In cancerous cells, Hsp90 expression is elevated, thereby exerting antiapoptotic effects, which is essential for the malignant transformation and tumor progression. Most of the Hsp90 inhibitors (Hsp90i) under investigation target the ATP binding site in the N-terminal domain of Hsp90.

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Compared to other countries in the South-East Asian region, Indonesia's mental health system remains underdeveloped from significant treatment gaps, which subsequently contribute to human rights violations of mental health patients who do not receive adequate medical care. In line with the introduction of universal health coverage in 2014, the Indonesian government plans to redress this by delegating detection and early intervention of mental health services to health practitioners without specialist training in mental health, however, there is limited evidence that they can perform this role effectively. This study aims to evaluate current workforce capacity by assessing differences in mental health literacy between Indonesian mental health and non-mental health practitioners.

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Introduces articles in the special issue of , Psychology and Psychiatry in the Global World Part I. The special issue seeks to consolidate and extend the historical analysis of psychology and psychiatry in the global world by bringing together seven articles detailing how theories, techniques, and practices have been translated, adapted, and appropriated in the colonial and postcolonial eras. The contributions demonstrate that it is fruitful to conduct research in the history of psychiatry and psychology together as broader ideational frameworks such as social Darwinism, eugenics, degeneration, and mental hygiene have inspired the development of psychological and psychiatric insights as well as the adoption of their intervention strategies worldwide.

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Extreme phosphate levels (P) have been associated with mineralization defects and increased fracture risk. Whether P within normal range is related to bone health in the general population is not well understood. To investigate the association of P with bone mineral density (BMD) and fracture risk, we assessed two population-based cohorts: the Dutch Rotterdam Study (RS-I, RS-II, RS-III; n = 6791) and the US Osteoporotic Fractures in Men (MrOS; n = 5425) study.

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Article Synopsis
  • Vertebral fractures are influenced by genetic factors, and this study aimed to identify specific genes linked to these fractures using a genome-wide association study (GWAS) approach.
  • The research involved analyzing data from the Rotterdam Study, focusing on elderly Dutch individuals, and included over 3,000 participants to assess the relationship between genetic markers and vertebral fractures.
  • A specific SNP (rs11645938) on chromosome 16q24 showed a weak association with vertebral fracture risk, but further analysis indicated that the results may not be reliable, highlighting the need for larger, more standardized studies to confirm any genetic links.
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Background: Osteoporosis is a systemic skeletal disease characterised by reduced bone mineral density and increased susceptibility to fracture; these traits are highly heritable. Both common and rare copy number variants (CNVs) potentially affect the function of genes and may influence disease risk.

Aim: To identify CNVs associated with osteoporotic bone fracture risk.

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Objective: To investigate the relation between lumbar disc degeneration (LDD) and all type of osteoporotic (OP) fractures including vertebral.

Methods: This study is part of the Rotterdam study, a large prospective population-based cohort study among men and women aged 55years and over. In 2819 participants spine radiographs were scored for LDD (osteophytes and disc space narrowing (DSN)) from L1 till S1, using the Lane atlas.

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The Netherlands was one of the first countries in the world to establish a legal framework for physician-assisted dying (PAD). In this article, we provide an overview of the public, political, legal, and medical debates on physician-assisted dying in The Netherlands, focusing on the role of psychiatry and mental illness. The number of individuals with chronic mental illness requesting PAD has been relatively small (although the number can be expected to increase because of the activities of various civic organizations advocating the right to die) and Dutch psychiatrists have been extremely reluctant to respond to such requests.

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Objective: Individuals with type 2 diabetes have increased fracture risk despite higher bone mineral density (BMD). Our aim was to examine the influence of glucose control on skeletal complications.

Research Design And Methods: Data of 4,135 participants of the Rotterdam Study, a prospective population-based cohort, were available (mean follow-up 12.

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W. F. Theunissen (1882-1961) was a leading psychiatrist in the Dutch East Indies.

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Article Synopsis
  • Bone mineral density (BMD) is key in predicting fracture risk, and this study conducted a large meta-analysis of over 32,000 individuals to examine its genetic underpinnings.
  • The researchers identified 56 genetic loci associated with BMD, including 32 new loci, connecting several to important biological pathways and some to genes not previously linked to bone health.
  • Notably, 14 of these loci were also found to be associated with increased fracture risk, highlighting their potential role in understanding fractures and improving prevention strategies.
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Aim: To study the prognosis of disability of community-dwelling older people with mild disability at baseline.

Methods: We used data from the Rotterdam Study: a community-based prospective cohort study of community-dwelling older people. We evaluated sociodemographic factors, lifestyle variables, health conditions and disability status at baseline and follow-up after 6 years.

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Introduction: Faster emergency response times are generally considered to have a positive effect on life expectancy of patients with a life-threatening event, leading many communities to determine response time intervals. However, worldwide, increasing urbanization and traffic congestion threatens ambulance response times. An emergency motorcycle response vehicle (MRV) can overcome these hurdles more easily than a larger ambulance.

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Recent studies suggest that mild hyponatremia is associated with fractures, but prospective studies are lacking. We studied whether hyponatremia is associated with fractures, falls, and/or bone mineral density (BMD). A total of 5208 elderly subjects with serum sodium assessed at baseline were included from the prospective population-based Rotterdam Study.

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Since the advent of European colonial expansion, medical theories of acclimatization have been inextricably related to convictions about the possibility and desirability of white settlement in the colonies, and political ideas of colonial governance. Before 1800, acclimatization theories emphasized the inherent flexibility of the human constitution and its ability to adapt to new environments. During the first half of the nineteenth century, European theorists came to highlight the vulnerability of white Europeans in the tropics to disease, degeneration, and death instead.

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Background: The objective of this study was to examine the relationship between common genetic variation of the ESR2 gene and osteoarthritis.

Methods: In the discovery study, the Rotterdam Study-I, 7 single nucleotide polymorphisms (SNPs) were genotyped and tested for association with hip (284 cases, 2772 controls), knee (665 cases, 2075 controls), and hand OA (874 cases, 2184 controls) using an additive model. In the replication stage one SNP (rs1256031) was tested in an additional 2080 hip, 1318 knee and 557 hand OA cases and 4001, 2631 and 1699 controls respectively.

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Objective: To address the need for standardization of osteoarthritis (OA) phenotypes by examining the effect of heterogeneity among symptomatic (SOA) and radiographic osteoarthritis (ROA) phenotypes.

Methods: Descriptions of OA phenotypes of the 28 studies involved in the TREAT-OA consortium were collected. We investigated whether different OA definitions result in different association results by creating various hip OA definitions in one large population based cohort (the Rotterdam Study I (RSI)) and testing those for association with gender, age and body mass index using one-way ANOVA.

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Osteoporosis is a complex disorder and commonly leads to fractures in elderly persons. Genome-wide association studies (GWAS) have become an unbiased approach to identify variations in the genome that potentially affect health. However, the genetic variants identified so far only explain a small proportion of the heritability for complex traits.

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Objective: To study the relationship between serum C reactive protein (CRP) levels, genetic variation in the CRP gene and the prevalence, incidence and progression of radiographic osteoarthritis (ROA) in the Rotterdam Study-I (RS-I). A systematic review of studies assessing the relationship between osteoarthritis (OA) and CRP levels was also performed.

Methods: The association between CRP levels and genetic variation in the CRP gene and ROA was examined in 861 patients with hand OA, 718 with knee OA, 349 with hip OA and 2806 controls in the RS-I using one-way analysis of covariance and logistic regression, respectively.

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Background: Genetic variation in SIRT1 has been associated with body mass index (BMI) and risk of obesity. SIRT1 may be influenced by diet.

Objective: We studied the gene-diet interaction on BMI at the SIRT1 locus.

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The C-variant of a T-13910C polymorphism (rs4988235; NT_022135.15:g.25316568G > A) upstream of the lactase phlorizin hydrolase (LPH) gene causes lactose intolerance.

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