88 research outputs found
Human Analogue Safe Haven Effect of the Owner : Behavioural and Heart Rate Response to Stressful Social Stimuli in Dogs
The secure base and safe haven effects of the attachment figure are central features of the human attachment theory. Recently, conclusive evidence for human analogue attachment behaviours in dogs has been provided, however, the owner’s security-providing role in danger has not been directly supported. We investigated the relationship between the behavioural and cardiac response in dogs (N = 30) while being approached by a threatening stranger in separation vs. in the presence of the owner, presented in a balanced order. Non-invasive telemetric measures of heart rate (HR) and heart rate variability (HRV) data during the threatening approaches was compared to periods before and after the encounters. Dogs that showed distress vocalisation during separation (N = 18) and that growled or barked at the stranger during the threatening approach (N = 17) were defined as behaviourally reactive in the given situation. While characteristic stress vocalisations were emitted during separations, the absence of the owner did not have an effect on dogs’ mean HR, but significantly increased the HRV. The threatening approach increased dogs’ mean HR, with a parallel decrease in the HRV, particularly in dogs that were behaviourally reactive to the encounter. Importantly, the HR increase was significantly less pronounced when dogs faced the stranger in the presence of the owner. Moreover, the test order, whether the dog encountered the stranger first with or without its owner, also proved important: HR increase associated with the encounter in separation seemed to be attenuated in dogs that faced the stranger first in the presence of their owner. We provided evidence for human analogue safe haven effect of the owner in a potentially dangerous situation. Similarly to parents of infants, owners can provide a buffer against stress in dogs, which can even reduce the effect of a subsequent encounter with the same threatening stimuli later when the owner is not present
Serum ferritin levels in women with polycystic ovary syndrome
Abstract
Objective:
To study ferritin levels, and potential factors influencing them, in women with polycystic ovary syndrome (PCOS) and investigate potential associations between ferritin levels and other parameters in these women.
Design:
Longitudinal general population-based cohort study, including data from both questionnaires and clinical measurements.
Subjects:
The study was conducted with data from the participants of the Women’s Health Study, including a total of 1,918 Finnish women aged approximately 35 years.
Exposure:
Polycystic ovary syndrome was defined according to the Rotterdam criteria by the presence of at least 2 of the following findings: oligomenorrhea/amenorrhea, hyperandrogenism (clinical or biochemical), and polycystic ovarian morphology.
Main Outcome Measures:
Serum ferritin levels and other parameters were determined from the cohort data, and the associations between ferritin levels and other investigated parameters were investigated with linear regression models.
Results:
Women with PCOS had significantly higher median ferritin levels than those without PCOS (51.43 μg/L vs. 44.85 μg/L). Low ferritin levels were less common among women with PCOS who had oligomenorrhea or amenorrhea compared with those among women who did not (1.5% vs. 11.8%). The median ferritin levels were also found to be lower in hyperandrogenic women with PCOS than in those with normoandrogenemia (49.96 μg/L vs. 73.50 μg/L). Women with PCOS had higher fasting insulin levels than those without PCOS (8.85 mU/L vs. 7.60 mU/L), and a positive association between fasting insulin and ferritin levels was found in the whole population (effect size, 0.0619; 95% confidence interval, 0.005–0.119). Finally, associations between ferritin levels and history of infertility were investigated in both the total population and women with PCOS; however, no significant associations were found.
Conclusion:
Our results suggest that women with PCOS have higher ferritin levels than those without PCOS and that both the decreased blood loss from irregular menstruation and increased androgen levels can influence ferritin levels in women with PCOS. A metabolic connection was also found because the serum insulin levels were associated positively with the serum ferritin levels in the total population, whereas the history of infertility did not seem to be associated with the serum ferritin levels in any of the study groups.Abstract
Objective:
To study ferritin levels, and potential factors influencing them, in women with polycystic ovary syndrome (PCOS) and investigate potential associations between ferritin levels and other parameters in these women.
Design:
Longitudinal general population-based cohort study, including data from both questionnaires and clinical measurements.
Subjects:
The study was conducted with data from the participants of the Women’s Health Study, including a total of 1,918 Finnish women aged approximately 35 years.
Exposure:
Polycystic ovary syndrome was defined according to the Rotterdam criteria by the presence of at least 2 of the following findings: oligomenorrhea/amenorrhea, hyperandrogenism (clinical or biochemical), and polycystic ovarian morphology.
Main Outcome Measures:
Serum ferritin levels and other parameters were determined from the cohort data, and the associations between ferritin levels and other investigated parameters were investigated with linear regression models.
Results:
Women with PCOS had significantly higher median ferritin levels than those without PCOS (51.43 μg/L vs. 44.85 μg/L). Low ferritin levels were less common among women with PCOS who had oligomenorrhea or amenorrhea compared with those among women who did not (1.5% vs. 11.8%). The median ferritin levels were also found to be lower in hyperandrogenic women with PCOS than in those with normoandrogenemia (49.96 μg/L vs. 73.50 μg/L). Women with PCOS had higher fasting insulin levels than those without PCOS (8.85 mU/L vs. 7.60 mU/L), and a positive association between fasting insulin and ferritin levels was found in the whole population (effect size, 0.0619; 95% confidence interval, 0.005–0.119). Finally, associations between ferritin levels and history of infertility were investigated in both the total population and women with PCOS; however, no significant associations were found.
Conclusion:
Our results suggest that women with PCOS have higher ferritin levels than those without PCOS and that both the decreased blood loss from irregular menstruation and increased androgen levels can influence ferritin levels in women with PCOS. A metabolic connection was also found because the serum insulin levels were associated positively with the serum ferritin levels in the total population, whereas the history of infertility did not seem to be associated with the serum ferritin levels in any of the study groups
Women's health study (WENDY) - a protocol of a population-based study assessing gynecological and metabolic health in women in their mid-30s
Abstract
The Women’s Health Study (WENDY) was conducted to improve insights into women’s health and health burden. It provides a unique, comprehensive data source that can be broadly utilised to understand gynaecological symptoms, diseases, and their relation to metabolic and overall health more deeply in a population-based setting. The study was conducted in Finland from May 2020 to October 2022. It included 1,918 women (33–37 years old) who were born in Northern Finland between July 1985 and December 1987. Data collection comprised one three-to-four-hour study visit that included clinical measurements, biological samples, ultrasound examinations and an extensive questionnaire on gynaecological and reproductive history, physical and mental health, quality of life, lifestyles, current life situations, health awareness and opinions. The study also included a menstrual cycle follow-up and cognitive testing up to three months via a mobile application. Given that all participants’ data can be linked to all Finnish national registers, and the NFBC participants’ data can be linked to the birth cohort data set collected from gestational week 24 onwards, WENDY study forms one of the largest datasets worldwide to investigate gynecological and metabolic health burden in women.Abstract
The Women’s Health Study (WENDY) was conducted to improve insights into women’s health and health burden. It provides a unique, comprehensive data source that can be broadly utilised to understand gynaecological symptoms, diseases, and their relation to metabolic and overall health more deeply in a population-based setting. The study was conducted in Finland from May 2020 to October 2022. It included 1,918 women (33–37 years old) who were born in Northern Finland between July 1985 and December 1987. Data collection comprised one three-to-four-hour study visit that included clinical measurements, biological samples, ultrasound examinations and an extensive questionnaire on gynaecological and reproductive history, physical and mental health, quality of life, lifestyles, current life situations, health awareness and opinions. The study also included a menstrual cycle follow-up and cognitive testing up to three months via a mobile application. Given that all participants’ data can be linked to all Finnish national registers, and the NFBC participants’ data can be linked to the birth cohort data set collected from gestational week 24 onwards, WENDY study forms one of the largest datasets worldwide to investigate gynecological and metabolic health burden in women
Normalisation to Blood Activity Is Required for the Accurate Quantification of Na/I Symporter Ectopic Expression by SPECT/CT in Individual Subjects
The utilisation of the Na/I symporter (NIS) and associated radiotracers as a reporter system for imaging gene expression is now reaching the clinical setting in cancer gene therapy applications. However, a formal assessment of the methodology in terms of normalisation of the data still remains to be performed, particularly in the context of the assessment of activities in individual subjects in longitudinal studies. In this context, we administered to mice a recombinant, replication-incompetent adenovirus encoding rat NIS, or a human colorectal carcinoma cell line (HT29) encoding mouse NIS. We used 99mTc pertechnetate as a radiotracer for SPECT/CT imaging to determine the pattern of ectopic NIS expression in longitudinal kinetic studies. Some animals of the cohort were culled and NIS expression was measured by quantitative RT-PCR and immunohistochemistry. The radioactive content of some liver biopsies was also measured ex vivo. Our results show that in longitudinal studies involving datasets taken from individual mice, the presentation of non-normalised data (activity expressed as %ID/g or %ID/cc) leads to ‘noisy’, and sometimes incoherent, results. This variability is due to the fact that the blood pertechnetate concentration can vary up to three-fold from day to day. Normalisation of these data with blood activities corrects for these inconsistencies. We advocate that, blood pertechnetate activity should be determined and used to normalise the activity measured in the organ/region of interest that expresses NIS ectopically. Considering that NIS imaging has already reached the clinical setting in the context of cancer gene therapy, this normalisation may be essential in order to obtain accurate and predictive information in future longitudinal clinical studies in biotherapy
Cancer Screening by Systemic Administration of a Gene Delivery Vector Encoding Tumor-Selective Secretable Biomarker Expression
Cancer biomarkers facilitate screening and early detection but are known for only a few cancer types. We demonstrated the principle of inducing tumors to secrete a serum biomarker using a systemically administered gene delivery vector that targets tumors for selective expression of an engineered cassette. We exploited tumor-selective replication of a conditionally replicative Herpes simplex virus (HSV) combined with a replication-dependent late viral promoter to achieve tumor-selective biomarker expression as an example gene delivery vector. Virus replication, cytotoxicity and biomarker production were low in quiescent normal human foreskin keratinocytes and high in cancer cells in vitro. Following intravenous injection of virus >90% of tumor-bearing mice exhibited higher levels of biomarker than non-tumor-bearing mice and upon necropsy, we detected virus exclusively in tumors. Our strategy of forcing tumors to secrete a serum biomarker could be useful for cancer screening in high-risk patients, and possibly for monitoring response to therapy. In addition, because oncolytic vectors for tumor specific gene delivery are cytotoxic, they may supplement our screening strategy as a “theragnostic” agent. The cancer screening approach presented in this work introduces a paradigm shift in the utility of gene delivery which we foresee being improved by alternative vectors targeting gene delivery and expression to tumors. Refining this approach will usher a new era for clinical cancer screening that may be implemented in the developed and undeveloped world
Analysis of two methods of isometric muscle contractions during the anti-G straining maneuver
This study investigated the difference in Mean Arterial Pressure (MAP) and Cardiac Output (CO) between two methods of isometric muscle contractions during the Anti-G Straining Maneuver (AGSM). 12 subjects (ages 18 to 38 yrs, height 176.8 +/- 7.4 cm, body mass 78.8 +/- 15.6 kg, percent body fat 14.3 +/- 6.6%) participated in the study. The study was a one-way within-subject design with test conditions counterbalanced. Two methods of isometric muscle contractions lasting 30 seconds each were assessed; an isometric push contraction and an isometric muscle tensing contraction. The dependent parameters were MAP and CO. The average MAP during the push contraction was 123 mmHg, SD +/- 11 and for tense was 118 mmHg, SD +/- 8. CO was 7.6 L/min, SD +/- 1.6 for push and 7.9 L/min, SD +/- 2.0 for tense method. Dependent t-tests revealed t(11) = 1.517, p = 0.157 for MAP and t(11) = 0.875, p = 0.400 for CO. This study demonstrated that the two methods of isometric muscle contractions were not statistically different with regards to MAP and CO. Therefore, both forms of isometric contractions may be potentially useful when performing the muscle contraction portion of the AGSM
Systemic therapy for cervical cancer with potentially regulatable oncolytic adenoviruses
Peer reviewe
<i>Anthrozoös</i>' Research (Volumes I—V) With Notes on Case Study and Single-Subject Designs
Psychology Degrees
Psychology is a very popular undergraduate major. Examining wage data from a range of degree holders reveals much about the expected career trajectories of those with psychology degrees. First, regarding baccalaureates, psychology and other liberal arts graduates—compared with those from certain preprofessional and technical undergraduate programs—generally fall in relatively low tiers of salary levels at both starting and later career points. Salary levels among baccalaureate alumni groups correlate with averaged measures of salary satisfaction, repeated job seeking, and perceptions of underemployment. These patterns seem to stem from the specific occupational categories (job titles) entered by graduates in psychology compared with other graduates, calling into question the employability advantage of so-called generic liberal arts skills. Second, psychology master’s degree holders also generally fall in a low tier of salary among their science, engineering, and health counterparts. Third, psychology college faculty (including instructors) fall in low tiers of salary compared with their colleagues from other academic fields. Such broadly based indications of the relative economic disadvantages of psychology degrees have implications for career counseling in the field. </jats:p
First Year Employment Outcomes of US Psychology Graduates Revisited: Need for a Degree, Salary, and Relatedness to the Major
Alumni survey responses from a multi-major (multi-course), United States university sample (c. 2003–06, N = 1760) provided a replication and extension of previous research on patterns of graduates' first-year employment outcomes. Compared with graduates from the fields of nursing/allied health, business, engineering/technology, and education, new psychology and humanities/social sciences alumni tended to have jobs that locate individuals in low tiers of features including need for a college degree, salary, and relatedness to one's major program of study (course). These patterns of employment outcomes for US psychology graduates are generally similar to those on record for liberal education (nonvocational) graduates in the United Kingdom. Results are discussed in the context of established occupational constructs such as person-job ft, congruence, career compromise, and education mismatch. </jats:p
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