Publications by authors named "Hakkinen M"

Background: Bladder cancer is a highly over-represented disease in males. The involvement of sex steroids in bladder carcinogenesis and the utilisation of steroid hormone action as a therapeutic target have been frequently proposed. However, the intratumoural steroid milieu remains unclear.

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  • Prenatal alcohol exposure (PAE) is a major cause of developmental disabilities, and current screening methods often fail to identify it effectively, making it important to explore new diagnostic tools.
  • This study analyzed 3,000 blood samples using a sensitive PEth (phosphatidylethanol) testing method to detect low levels of alcohol consumption during pregnancy, finding that 5.2% of samples tested positive for PEth.
  • The researchers recommend incorporating PEth testing into routine prenatal screenings with a cutoff of 2 ng/mL, along with a follow-up evaluation for positive results to better assess alcohol consumption patterns during pregnancy.
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We studied opioid agonist treatment (OAT) status before buprenorphine-related death in Finland, where buprenorphine is the principal OAT medicine and also the most misused opioid, through a retrospective population-based study using medico-legal cause-of-death investigation and OAT patient records. The study included all death cases (N = 570) between 2018 and 2020 with a buprenorphine or norbuprenorphine finding in post-mortem toxicology and with known drug misuse history or concomitant findings of illicit drugs. Of the deceased, 10% had received OAT in the year before death.

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Context: Small birth size and increased postnatal growth have been associated with earlier timing of adrenarche and puberty, but it is not well known whether these factors alone or together lead to earlier maturation.

Objective: This work aimed to search for different growth trajectories using a clustering approach to analyze the effects of birth size and postnatal growth on adrenarchal and pubertal development.

Methods: Altogether 351 children (48% girls) were examined prospectively at ages 6 to 9 and 9 to 11 years.

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Foodborne pathogen may cause serious, life-threatening disease in susceptible persons. We combined data from Finnish national listeriosis surveillance, patient interview responses, and laboratory data of patient samples and compared them to listeria findings from food and food production plants collected as part of outbreak investigations during 2011-2021. The incidence of invasive listeriosis in Finland (1.

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Previous steroid hormone studies concerning pregnancy and newborns have mainly focused on glucocorticoids; wider steroid profiles have been less commonly investigated. Here, we performed a comparative analysis of 17 steroids from newborn hair and umbilical cord serum at the time of delivery. The study participants (n = 42, 50% girls) were a part of the Kuopio Birth Cohort and represent usual Finnish pregnancies.

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Context: Childhood overweight has been linked to earlier development of adrenarche and puberty, but it remains unknown if lifestyle interventions influence sexual maturation in general populations.

Objective: To investigate if a 2-year lifestyle intervention influences circulating androgen concentrations and sexual maturation in a general population of children.

Methods: We conducted a 2-year physical activity and dietary intervention study in which 421 prepubertal and mostly normal-weight 6- to 9-year-old children were allocated either to a lifestyle intervention group (119 girls, 132 boys) or a control group (84 girls, 86 boys).

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Article Synopsis
  • The study investigates how steroid concentrations in endometrial tissue and serum relate to gene expression of steroid-metabolizing enzymes to assess endometrial receptivity in IVF patients.
  • It involves a case-control design with 40 IVF patients, comparing 20 women who achieved clinical pregnancy to 20 who did not, while controlling for various factors like fertility type and age.
  • Results show no overall differences in steroid levels between pregnant and nonpregnant groups, but pregnant women with primary infertility had lower estrone levels and a distinct estrone:androstenedione ratio compared to their nonpregnant counterparts.
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Background: Increased intraocular pressure (IOP) and pseudoexfoliation (PEX) are major risk factors for open-angle glaucoma (OAG), an age-related neurodegenerative disease of significant importance for public health. There are few studies on the distribution of IOP in populations where PEX is a common finding.

Methods: The distribution of IOP was studied in 733 subjects 65-74 years of age, examined in a population survey in the rural district of Tierp, Sweden, 1984-86.

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Background: Hepatitis C virus (HCV) is common among individuals in opioid agonist therapy (OAT). HCV treatment has previously been unavailable for most HCV positive OAT patients in Finland. The removal of treatment restrictions and attempts to reach HCV elimination goals have increased the number of OAT patients needing HCV treatment.

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The polyamines, spermine (Spm) and spermidine (Spd), are important for cell growth and function. Their homeostasis is strictly controlled, and a key downregulator of the polyamine pool is the polyamine-inducible protein, antizyme 1 (OAZ1). OAZ1 inhibits polyamine uptake and targets ornithine decarboxylase (ODC), the rate-limiting enzyme of polyamine biosynthesis, for proteasomal degradation.

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Hair steroid analysis offers the possibility to evaluate long-term steroid metabolism. It is especially beneficial when studying the steroid milieu in newborns and children, for example it can provide new insights into steroid metabolism over months and is unaffected by diurnal fluctuations in steroid concentrations. This study describes a quantitative and highly selective high-resolution mass spectrometry method for the simultaneous analysis of multiple steroids from human scalp hair.

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Introduction: We aimed to investigate whether the relationship between fat mass and bone mineral content (BMC) is mediated by insulin, leptin, adiponectin, dehydroepiandrosterone sulphate, testosterone and estradiol in children aged 9-11 years.

Materials And Methods: We utilised cross-sectional data from the Physical Activity and Nutrition in Children study (n = 230 to 396; 112 to 203 girls). Fat mass and BMC were assessed with dual-energy X-ray absorptiometry.

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Backround: Polyamines play an important role in cellular proliferation, and the change in polyamine metabolism is reported in various cancers. We searched for urinary polyamine signature for distinguishing between pancreatic cancer, premalignant lesions of the pancreas (PLP), acute and chronic pancreatitis, and controls.

Methods: Patients and controls were prospectively recruited in three Finnish hospitals between October 2013 and June 2016.

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Background: The Syrian conflict has endured for a decade, causing one of the most significant humanitarian crises since World War II. The conflict has inflicted massive damage to civil infrastructure, and not even the health care sector has been spared. On the contrary, health care has been targeted, and as a result, many health professionals have left the country.

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Objectives: To explore the reasons why healthcare workers migrate from Syria, a country where conflict has been raging for over a decade.

Design: A qualitative study was performed using semistructured interviews. Semistructured questions guided in-depth interviews.

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Background: Prostate cancer (PCa) progression depends on androgen receptor activity. Cholesterol is required for biosynthesis of all steroid hormones, including androgens. Impact of cholesterol-lowering statins on androgens is unknown.

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Context: Premature adrenarche (PA) may increase the risk for polycystic ovary syndrome (PCOS).

Objective: To study features of PCOS in young adult women with a history of PA.

Methods: Thirty PA and 42 control females were followed from prepuberty to young adulthood (median age 18.

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Endometrial cancer (EC) is the most common gynaecological tumor in developed countries and its incidence is increasing. Approximately 80% of newly diagnosed EC cases are estrogen-dependent. Type 1 17β-hydroxysteroid dehydrogenase (17β-HSD-1) is the enzyme that catalyzes the final step in estrogen biosynthesis by reducing the weak estrogen estrone (E1) to the potent estrogen 17β-estradiol (E2), and previous studies showed that this enzyme is implicated in the intratumoral E2 generation in EC.

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Health care is attacked in many contemporary conflicts despite the Geneva Conventions. The war in Syria has become notorious for targeted violence against health care. This qualitative study describes health care workers' experiences of violence using semi-structured interviews ( = 25) with professionals who have been working in Syria.

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Small mammals are known to carry spp.; however, little is known about the genotypes and their role in human infections. We studied intestinal content from small wild mammals collected in their natural habitats in Finland in 2010-2017, and in close proximity to 40 pig or cattle farms in 2017.

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Campylobacter jejuni has caused several campylobacteriosis outbreaks via raw milk consumption. This study reports follow-up of a milk-borne campylobacteriosis outbreak that revealed persistent C. jejuni contamination of bulk tank milk for seven months or longer.

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Metabolomics analysis generates vast arrays of data, necessitating comprehensive workflows involving expertise in analytics, biochemistry and bioinformatics in order to provide coherent and high-quality data that enable discovery of robust and biologically significant metabolic findings. In this protocol article, we introduce notame, an analytical workflow for non-targeted metabolic profiling approaches, utilizing liquid chromatography-mass spectrometry analysis. We provide an overview of lab protocols and statistical methods that we commonly practice for the analysis of nutritional metabolomics data.

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In November 2016, an elderly patient was diagnosed with bacteremia in Finland. Grocery store loyalty card records and microbiological investigation of foods found in the home fridge and freezer of the patient revealed commercial, modified-atmosphere packaged meatballs as the source of the infection. Investigation of the meatball production plant revealed that the floor drain samples were contaminated with the same strain as those isolated from the patient and meatballs.

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