bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison between velocity‐specific exercise and isometric exercise on neck muscle functions and performance: a randomised clinical trial
Authors: Tsang Sharon MH , Chan Kenneth TK , Ho Parco LT , Kwok Jacky CY , Tse Daniel HT , Tsoi Henry HT
Published: January 2021

Background

Evidence has shown that velocity-specific exercise results in additional benefits for peripheral joint muscles by promoting their functions, however, its effects on spinal muscles are yet to be investigated. This study aimed to examine the feasibility and effects of velocity-specific exercise compared to isometric exercise on cervical muscle functions and performance in healthy individuals.

Methods

Thirty healthy adults were randomised to practise either the velocity-specific exercise (VSE, n = 15) or isometric exercise (IE, n = 15) for 6 weeks. Functions and performance of the cervical extensors and flexors were assessed pre- and post-program, by analyzing the peak torque and electromyography during the isokinetic testing, and cross-sectional area of the deep cervical muscles at rest. The self-reported level of difficulty and post-exercise soreness during the exercise were recorded to evaluate the feasibility and safety of the two exercise programs.

Results

Both VSE and IE exercises resulted in significant improvement of the muscle functions and performance while there were no between-group differences at reassessment of the (a) cross-sectional area of longus colli and semispinalis capitis; (b) EMG amplitude in sternocleidomastoid and cervical erector spinae, and (c) peak torque values. Further analysis revealed that degree of correlation between extension torque and EMG amplitude of cervical erector spinae increased in both groups. However, significant correlation was found only in VSE group post-program. There were no significant differences for the level of difficulty and post-exercise soreness found between two groups.

Conclusions

Both velocity-specific and isometric exercises significantly promoted cervical muscle functions and performance. The present study confirms that velocity-specific exercise can be practised safely and it also contributes to a greater enhancement in neuromuscular efficiency of the cervical extensors. These findings indicate that the velocity-specific exercise can be considered as a safe alternative for training of the cervical muscles. Further study is recommended to examine its benefit and application for promoting the muscle functions and recovery in symptomatic individuals.
Thymic rebound hyperplasia post-chemotherapy mistaken as disease progression in a patient with lymphoma involving mediastinum: a case report and reflection
Authors: Qiu Lei , Zhao Yi , Yang Yang , Huang He , Cai Zhen , He Jingsong
Published: January 2021

Background

Chemotherapy can cause thymic atrophy and reduce T-cell output in cancer patients. However, the thymus in young adult patients has regenerative potential after chemotherapy, manifesting as thymic hyperplasia which can be easily mistaken as residual disease or recurrence in patients suffering lymphoma.

Case presentation

This study reports a case of lymphoma in a young female adult who was initially diagnosed with an anterior mediastinal mass, and was found to have soft tissue occupying the anterior mediastinum repeatedly after chemotherapy, suggesting a lymphoma residue or disease progression. From discussions by a multi-disciplinary team (MDT), the anterior mediastinal mass of the patient was considered unknown and might be thymus tissue or tumor tissue, and it was eventually identified as thymus tissue via histopathology.

Conclusions

The anterior mediastinal mass appearing after chemotherapy in patients with lymphoma can be considered as enlarged thymus, and such phenomenon is frequent in young adult patients who undergo chemotherapy or autologous hematopoietic stem cell transplantation. Additionally, detection of thymic output cells in peripheral blood might be a feasible approach to differentiate thymic hyperplasia from lymphoma.
Impact of a specialised palliative care intervention in patients with advanced soft tissue sarcoma – a single-centre retrospective analysis
Authors: Brandes F. , Striefler J. K. , Dörr A. , Schmiester M. , Märdian S. , Koulaxouzidis G. , Kaul D. , Behzadi A. , Thuss-Patience P. , Ahn J. , Pelzer U. , Bullinger L. , Flörcken A.
Published: January 2021

Background

Soft tissue sarcomas (STS) account for less than 1% of all malignancies. Approximately 50% of the patients develop metastases with limited survival in the course of their disease. For those patients, palliative treatment aiming at symptom relief and improvement of quality of life is most important. However, data on symptom burden and palliative intervention are limited in STS patients.

Aim

Our study evaluates the effectiveness of a palliative care intervention on symptom relief and quality of life in STS patients.

Design/setting

We retrospectively analysed 53 inpatient visits of 34 patients with advanced STS, admitted to our palliative care unit between 2012 and 2018.

Symptom burden was measured with a standardised base assessment questionnaire at admission and discharge.

Results

Median disease duration before admission was 24 months, 85% of patients had metastases. The predominant indication for admission was pain, weakness and fatigue. Palliative care intervention led to a significant reduction of pain: median NRS for acute pain was reduced from 3 to 1 (p < 0.001), pain within the last 24 h from 5 to 2 (p < 0.001) and of the median MIDOS symptom score: 18 to 13 (p < 0.001). Also, the median stress level, according to the distress thermometer, was reduced significantly: 7.5 to 5 (p = 0.027).

Conclusions

Our data underline that specialised palliative care intervention leads to significant symptom relief in patients with advanced STS. Further efforts should aim for an early integration of palliative care in these patients focusing primarily on the identification of subjects at high risk for severe symptomatic disease.
Medical students’ awareness of health issues, attitudes, and confidence about caring for lesbian, gay, bisexual and transgender patients: a cross-sectional survey
Authors: Arthur Sophie , Jamieson Abigail , Cross Harry , Nambiar Kate , Llewellyn Carrie D.
Published: January 2021

Background

Lesbian, gay, bisexual and transgender (LGBT) patients have an increased incidence of a range of health problems, and face many barriers to accessing healthcare. Our research aimed to explore the awareness of health issues and attitudes of medical students towards LGBT patients’ health including barriers to health services, their attitudes towards inclusion of LGBT content in the curriculum and their confidence with providing care for their LGBT patients in the future.

Methods

Medical students were recruited to take part in a cross-sectional survey. We used a 28-item survey to explore views about the undergraduate medical curriculum.

Results

252 surveys were analysed from 776 eligible participants. Attitudes towards LGBT patients were positive but awareness and confidence with respect to LGBT patients were variable. Confidence discussing sexual orientation with a patient significantly increased with year of study but confidence discussing patient gender identity did not. The majority of participants (n = 160; 69%) had not received specific training on LGBT health needs, and 85% (n = 197) wanted to receive more training.

Conclusions

Increasing the amount of LGBT teaching in undergraduate medical curricula could help to increase the quality of doctor-patient interactions, to facilitate patients’ disclosure of sexual orientation and gender identity in healthcare and increase the quality of healthcare.
How can WhatsApp® facilitate the future of medical education and clinical practice?
Authors: Salam Muhammed Aizaz us , Oyekwe George Chukwuemeka , Ghani Sami Ahmad , Choudhury Regwaan Imtiaz
Published: January 2021

As part of the modern generation of medical students and prospective future doctors of the United Kingdom’s Nation Health Service (NHS), we have grown up in an age where smartphones and instant messaging applications (IMAs) are ubiquitous across all aspects of society. With IMAs being so familiar, we recognise their scope for facilitating our learning of the pre-registration syllabus and how their practical nature could potentially revolutionise healthcare worldwide. It is, therefore, rational to further investigate the benefits of incorporating such technology into these respective settings. In this article, we will further expand on some of the advantages highlighted by E. Colman & E. O’Connor that IMAs, particularly WhatsApp, have in the academic environment which resonate with us. We illustrate our views on IMAs being incorporated into health systems globally through exemplifying the NHS, using reviewed literature.
Perspectives of organizational identity in a health higher education institution: a mixed-method analysis
Authors: de Miranda Junior Ubirajara José Picanço , Novaes Maria Rita Carvalho Garbi , Santos Henrique Batista Araújo , Tatsch João Fellipe Santos , Ferreira Rafael Sanches , Vieira Wilton Paulo de Freitas Martins , Lapão Luís Velez
Published: January 2021

Background

Among the processes to be experienced by any organization during its establishment is the formation of an organizational identity. This process can be understood as the activity and event through which an organization becomes unique in the mind of its members. An organizational identity leads to an identification and both are directly associated with the success of an institution. This study is about a public higher education institution in health in its early years, with distinctive characteristics in the country where it is situated. In spite of having been successful in the graduation of its students it has fragile institutional bases, lack of autonomy and internal problems common to other institutions of this type. Thus, this study was conducted to understand how this institution defined itself among its own members, the elements of its identity and what justified its relative success despite its weaknesses.

Methods

A mixed-method approach was used to evaluate how a representative portion of this organization identifies with it. For the qualitative study two focus groups were conducted with transcripts submitted to content analysis proposed by Bardin, culminating in results from which a Likert scale-based questionnaire was elaborated and applied to 297 subjects.

Results

There were six central elements of the organizational identity made evident by the focus groups: political / ideological conflict; active teaching and learning methodologies; location / separation of campuses; time of existence; teaching career; political-administrative transformations. The quantitative analysis revealed in more detail the general impressions raised in the focus groups. Most results were able to demonstrate distinct identifications of the same identity with its exposed weaknesses.

Conclusions

Lack of autonomy, administrative and structural shortcomings and ideological or political conflicts presented themselves as problems capable of destabilizing the identity of a public higher education institution. On the other hand, one way to combat such problems is through the development of the institution itself, particularly by becoming more active and useful to the community and seeking in a common interest to the higher administration agencies.
What impact does postgraduate clinical training have on empathy among Japanese trainee dentists?
Authors: Yoshida Toshiko , Watanabe Sho , Kono Takayuki , Taketa Hiroaki , Shiotsu Noriko , Shirai Hajime , Nakai Yukie , Torii Yasuhiro
Published: January 2021

Background

Enhancing empathy in healthcare education is a critical component in the development of a relationship between healthcare professionals and patients that would ensure better patient care; improved patient satisfaction, adherence to treatment, patients’ medication self-efficacy, improved treatment outcomes, and reduced patient anxiety. Unfortunately, however, the decline of empathy among students has been frequently reported. It is especially common when the curriculum transitions to a clinical setting. However, some studies have questioned the significance and frequency of this decline. Thus, the purpose of this study was to determine the impact of postgraduate clinical training on dental trainees’ empathy from cognitive, behavioral, and patients’ perspective.

Methods

This study included 64 trainee dentists at Okayama University Hospital and 13 simulated patients (SPs). The trainee dentists carried out initial medical interviews with SPs twice, at the beginning and the end of their clinical training. The trainees completed the Japanese version of the Jefferson Scale of Empathy for health professionals just before each medical interview. The SPs evaluated the trainees’ communication using an assessment questionnaire immediately after the medical interviews. The videotaped dialogue from the medical interviews was analyzed using the Roter Interaction Analysis System.

Results

No significant difference was found in the self-reported empathy score of trainees at the beginning and the end of the clinical training (107.73 [range, 85–134] vs. 108.34 [range, 69–138];p = 0.643). Considering the results according to gender, male scored 104.06 (range, 88–118) vs. 101.06 (range, 71–122;p = 0.283) and female 109.17 (range, 85–134) vs. 111.20 (range, 69–138;p = 0.170). Similarly, there was no difference in the SPs’ evaluation of trainees’ communication (10.73 vs. 10.38,p = 0.434). Communication behavior in the emotional responsiveness category for trainees in the beginning was significantly higher than that at the end (2.47 vs. 1.14,p = 0.000).

Conclusions

Overall, a one-year postgraduate dental training program neither reduced nor increased trainee dentists’ empathy levels. Providing regular education support in this area may help trainees foster their empathy.
Malpractice claimed calls within the Swedish Healthcare Direct: a descriptive – comparative case study
Authors: Björkman Annica , Engström Maria , Winblad Ulrika , Holmström Inger K.
Published: January 2021

Background

Medical errors are reported as a malpractice claim, and it is of uttermost importance to learn from the errors to enhance patient safety. The Swedish national telephone helpline SHD is staffed by registered nurses; its aim is to provide qualified healthcare advice for all residents of Sweden; it handles normally about 5 million calls annually. The ongoing Covid-19 pandemic have increased call volume with approximate 30%. The aim of the present study was twofold: to describe all malpractice claims and healthcare providers’ reported measures regarding calls to Swedish Healthcare Direct (SHD) during the period January 2011–December 2018 and to compare these findings with results from a previous study covering the period January 2003–December 2010.

Methods

The study used a descriptive, retrospective and comparative design. A total sample of all reported malpractice claims regarding calls to SHD (n = 35) made during the period 2011–2018 was retrieved. Data were analysed and compared with all reported medical errors during the period 2003–2010 (n = 33).

Results

Telephone nurses’ failure to follow the computerized decision support system (CDSS) (n = 18) was identified as the main reason for error during the period 2011–2018, while failure to listen to the caller (n = 12) was the main reason during the period 2003–2010. Staff education (n = 21) and listening to one’s own calls (n = 16) were the most common measures taken within the organization during the period 2011–2018, compared to discussion in work groups (n = 13) during the period 2003–2010.

Conclusion

The proportion of malpractice claims in relation to all patient contacts to SHD is still very low; it seems that only the most severe patient injuries are reported. The fact that telephone nurses’ failure to follow the CDSS is the most common reason for error is notable, as SHD and healthcare organizations stress the importance of using the CDSS to enhance patient safety. The healthcare organizations seem to have adopted a more systematic approach to handling malpractice claims regarding calls, e.g., allowing telephone nurses to listen to their own calls instead of having discussions in work groups in response to events. This enables nurses to understand the latent factors contributing to error and provides a learning opportunity.
Work activities of primary health care nurses in Poland: National Survey Results
Authors: Marcinowicz Ludmila , Wojnar Danuta , Terlikowski Slawomir Jerzy
Published: January 2021

Background

In some countries, including Poland, nurses have acquired autonomy from being a designated “ancillary staff” to “professional staff” only in recent decades. No prior published studies have examined, however, whether the actual nursing practice in primary health care (PHC) has evolved with the advancement of education and professional autonomy. The aim of this study is to assess the scope of practice of a PHC nurses and their actual work activities.

Methods

A cross-sectional study design using an investigator-developed survey was conducted in Poland, in 2018. The survey was sent to professionally active PHC nurses in Poland. Of the 225 questionnaires distributed, 202 (89.8%) were returned.

Results

Out of 44 work activities examined, the most often performed activity was administering medications. Less frequent activities included recognizing patients’ nursing needs and health problems and monitoring, assessing, and interpreting basic vital signs. A correlation was found between the length of work experience and the following three activities: performing nursing care, issuing referrals for specific diagnostic tests, and ordering of specific treatments, medications, and nutritional supplements. The longer was the work experience, the more often the nurses performed nursing care (r = 0.15; p = 0.035) but less often issued referrals for diagnostic tests (r = − 0.24; p = 0.001) or orders within their scope of practice (r = − 0.23; p = 0.002).

Conclusion

While nurses in general are most likely to carry out physician orders, junior nurses tend to be more likely to work toward professional autonomy and pursuing new challenges. PHC nurses in Poland perform work associated more with carrying out physicians’ orders and less with what they were prepared to do. Engaging nursing students in interprofessional education, dissemination of nursing research, and advocacy of nursing professional organizations on behalf of the profession may be an effective strategy to overcome the current barriers for PHC nurses to work the top of their license.
Correction to: The patient advisor, an organizational resource as a lever for an enhanced oncology patient experience (PAROLEonco): a longitudinal multiple case study protocol
Authors: Pomey M. P. , de Guise M. , Desforges M. , Bouchard K. , Vialaron C. , Normandin L. , Iliescu-Nelea M. , Fortin I. , Ganache I. , Régis C. , Rosberger Z. , Charpentier D. , Bélanger L. , Dorval M. , Ghadiri D. P. , Lavoie-Tremblay M. , Boivin A. , Pelletier J. F. , Fernandez N. , Danino A. M.
Published: January 2021

An amendment to this paper has been published and can be accessed via the original article.
Body mass index and waist circumference in relation to the risk of 26 types of cancer: a prospective cohort study of 3.5 million adults in Spain
Authors: Recalde Martina , Davila-Batista Veronica , Díaz Yesika , Leitzmann Michael , Romieu Isabelle , Freisling Heinz , Duarte-Salles Talita
Published: January 2021

Background

A high body mass index (BMI) has been associated with increased risk of several cancers; however, whether BMI is related to a larger number of cancers than currently recognized is unclear. Moreover, whether waist circumference (WC) is more strongly associated with specific cancers than BMI is not well established. We aimed to investigate the associations between BMI and 26 cancers accounting for non-linearity and residual confounding by smoking status as well as to compare cancer risk estimates between BMI and WC.

Methods

Prospective cohort study with population-based electronic health records from Catalonia, Spain. We included 3,658,417 adults aged ≥ 18 years and free of cancer at baseline between 2006 and 2017. Our main outcome measures were cause-specific hazard ratios (HRs) with 99% confidence intervals (CIs) for incident cancer at 26 anatomical sites.

Results

After a median follow-up time of 8.3 years, 202,837 participants were diagnosed with cancer. A higher BMI was positively associated with risk of nine cancers (corpus uteri, kidney, gallbladder, thyroid, colorectal, breast post-menopausal, multiple myeloma, leukemia, non-Hodgkin lymphoma) and was positively associated with three additional cancers among never smokers (head and neck, brain and central nervous system, Hodgkin lymphoma). The respective HRs (per 5 kg/m2 increment) ranged from 1.04 (99%CI 1.01 to 1.08) for non-Hodgkin lymphoma to 1.49 (1.45 to 1.53) for corpus uteri cancer. While BMI was negatively associated to five cancer types in the linear analyses of the overall population, accounting for non-linearity revealed that BMI was associated to prostate cancer in a U-shaped manner and to head and neck, esophagus, larynx, and trachea, bronchus and lung cancers in an L-shaped fashion, suggesting that low BMIs are an approximation of heavy smoking. Of the 291,305 participants with a WC measurement, 27,837 were diagnosed with cancer. The 99%CIs of the BMI and WC point estimates (per 1 standard deviation increment) overlapped for all cancers.

Conclusions

In this large Southern European study, a higher BMI was associated with increased risk of twelve cancers, including four hematological and head and neck (only among never smokers) cancers. Furthermore, BMI and WC showed comparable estimates of cancer risk associated with adiposity.
Deciphering molecular mechanisms underlying chemoresistance in relapsed AML patients: towards precision medicine overcoming drug resistance
Authors: Levin May , Stark Michal , Ofran Yishai , Assaraf Yehuda G.
Published: January 2021

Background

Acute myeloid leukemia (AML) remains a devastating disease with a 5-year survival rate of less than 30%. AML treatment has undergone significant changes in recent years, incorporating novel targeted therapies along with improvements in allogeneic bone marrow transplantation techniques. However, the standard of care remains cytarabine and anthracyclines, and the primary hindrance towards curative treatment is the frequent emergence of intrinsic and acquired anticancer drug resistance. In this respect, patients presenting with chemoresistant AML face dismal prognosis even with most advanced therapies. Herein, we aimed to explore the potential implementation of the characterization of chemoresistance mechanisms in individual AML patients towards efficacious personalized medicine.

Methods

Towards the identification of tailored treatments for individual patients, we herein present the cases of relapsed AML patients, and compare them to patients displaying durable remissions following the same chemotherapeutic induction treatment. We quantified the expression levels of specific genes mediating drug transport and metabolism, nucleotide biosynthesis, and apoptosis, in order to decipher the molecular mechanisms underlying intrinsic and/or acquired chemoresistance modalities in relapsed patients. This was achieved by real-time PCR using patient cDNA, and could be readily implemented in the clinical setting.

Results

This analysis revealed pre-existing differences in gene expression levels between the relapsed patients and patients with lasting remissions, as well as drug-induced alterations at different relapse stages compared to diagnosis. Each of the relapsed patients displayed unique chemoresistance mechanisms following similar treatment protocols, which could have been missed in a large study aimed at identifying common drug resistance determinants.

Conclusions

Our findings emphasize the need for standardized evaluation of key drug transport and metabolism genes as an integral component of routine AML management, thereby allowing for the selection of treatments of choice for individual patients. This approach could facilitate the design of efficacious personalized treatment regimens, thereby reducing relapse rates of therapy refractory disease.
RETRACTED ARTICLE: Knockdown of circRNA_0007534 suppresses the tumorigenesis of cervical cancer via miR-206/GREM1 axis
Authors: Sun Qiang , Qi Xiangying , Zhang Wenyan , Li Xiaoyu
Published: January 2021

Background

Increasing evidence manifested that circular RNAs (circRNAs) acted as crucial regulators in human cancers by targeting the miRNA/mRNA axis, including cervical cancer (CC). Circ_0007534 was reported to promote CC cell proliferation and invasion by the miR-498/BMI-1 axis. The aim of this study was to explore a novel miRNA/mRNA network underlying circ_0007534 in CC regulation.

Methods

The quantitative real-time polymerase chain reaction (qRT-PCR) was implemented to examine the levels of circ_0007534, miR-206 and Gremlin1 (GREM1). Cell viability was determined using MTT assay. BrdU and colony formation assays were performed for analyzing cell proliferation. Cell apoptosis was assessed by flow cytometry. The protein levels of GREM1 and apoptotic markers (Bcl-2, Bax, C-Caspase3) were measured via western blot. Cell invasion was detected by transwell assay. The target relationship was analyzed by dual-luciferase reporter assay. The impact of circ_0007534 on CC growth in vivo was ascertained by xenograft assay.

Results

Circ_0007534 expression was aberrantly increased in CC tissues and cells. Functionally, knockdown of circ_0007534 reduced CC cell growth and invasion but motivated apoptosis. In the mechanism, circ_0007534 targeted miR-206 and its regulatory function was associated with sponging miR-206. Moreover, circ_0007534 was found to regulate GREM1 level by targeting miR-206. The inhibitory effect of si-circ_0007534 on the malignant progression of CC was reversed after GREM1 was overexpressed. Furthermore, circ_0007534 inhibition also reduced tumor growth of CC in vivo partially by regulating miR-206/GREM1 axis.

Conclusion

These results suggested that knockdown of circ_0007534 promoted the level of miR-206 to induce the expression downregulation of GREM1, consequently inhibiting the progression of CC.
Measuring implanted patient response to tone pips
Authors: Cornejo Juan M. , Quintana Agar K. , Beltran Nohra E. , Granados Pilar
Published: January 2021

Background

An electrical potential not previously reported—electrical cochlear response (ECR)—observed only in implanted patients is described. Its amplitude and growth slope are a measurement of the stimulation achieved by a tone pip on the auditory nerve. The stimulation and recording system constructed for this purpose, the features of this potential obtained in a group of 43 children, and its possible clinical use are described. The ECR is obtained by averaging the EEG epochs acquired each time the cochlear implant (CI) processes a tone pip of known frequency and intensity when the patient is sleeping and using the CI in everyday mode. The ECR is sensitive to tone pip intensity level, microphone sensitivity, sound processor gain, dynamic range of electrical current, and responsiveness to electrical current of the auditory nerve portion involved with the electrode under test. It allows individual evaluation of intracochlear electrodes by choosing, one at the time, the central frequency of the electrode as the test tone pip frequency, so the ECR measurement due to a variable intensity tone pip allows to establish the suitability of the dynamic range of the electrode current.

Results

There is a difference in ECR measurements when patients are grouped based on their auditory behavior. The ECR slope and amplitude for the Sensitive group is 0.2 μV/dBHL and 10 μV at 50 dBHL compared with 0.04 μV/dBHL and 3 μV at 50dBHL for the Inconsistent group. The clinical cases show that adjusting the dynamic range of current based on the ECR improved the patient’s auditory behavior.

Conclusions

ECR can be recorded regardless of the artifact due to the electromyographic activity of the patient and the functioning of the CI. Its amplitude and growth slope versus the intensity of the stimulus differs between electrodes. The relationship between minimum ECR detection intensity level and auditory threshold suggests the possibility of estimating patient auditory thresholds this way. ECR does not depend on the subject’s age, cooperation, or health status. It can be obtained at any time after implant surgery and the test procedure is the same regardless of device manufacturer.
A qualitative study of barriers to employment experienced by people living with HIV in Toronto and Ottawa
Authors: Perri Melissa , Craig-Neil Amy , Gaspar Mark , Hunter Charlotte , Kendall Claire , Alexander Ower , Pinto Andrew D.
Published: January 2021

Background

Effective treatment has extended the life expectancy and reduced disability in people living with HIV (PLWH). However, previous research has found 45–65% of working-age PLWH were unemployed compared to 5–10% in the general public of North America and Europe. We examined the barriers to gaining employment among PLWH.

Methods

Thirty-five in-depth interviews were conducted in person or over the phone with PLWH living in Toronto or Ottawa. This included PLWH who were unemployed but actively seeking employment, as well as PLWH who had successfully gained employment through an agency that specifically supported PLWH funded by the AIDS Committee of Toronto. Interviews were conducted between February 2019 and March 2020. All interviews were audio-recorded, transcribed and analyzed using thematic analysis.

Results

The majority of participants were between the ages of 40–55 and identified as male. Participants shared many common barriers when describing their attempts to attain or maintain employment. Although varying in employment status at the time of the study, consistent barriers included experiencing HIV stigma in workplaces, challenges overcoming mental health illnesses, and difficulties in navigating social assistance and unemployment insurance programs when pursuing a return to work.

Conclusions

PLWH face significant barriers when attempting to engage with employment opportunities. Health providers and organizations can do more to support campaigns to end HIV stigma, to support individuals in pursuing employment, and to advocate for policy change that supports reentry into the workforce for PLHA.
Tracking the effects of COVID-19 in rural China over time
Authors: Wang Huan , Zhang Markus , Li Robin , Zhong Oliver , Johnstone Hannah , Zhou Huan , Xue Hao , Sylvia Sean , Boswell Matthew , Loyalka Prashant , Rozelle Scott
Published: January 2021

Background

China issued strict nationwide guidelines to combat the COVID-19 outbreak in January 2020 and gradually loosened the restrictions on movement in early March. Little is known about how these disease control measures affected the 600 million people who live in rural China. The goal of this paper is to document the quarantine measures implemented in rural China outside the epicenter of Hubei Province and to assess the socioeconomic effect of the measures on rural communities over time.

Methods

We conducted three rounds of interviews with informants from 726 villages in seven provinces, accounting for over 25% of China’s overall rural population. The survey collected data on rural quarantine implementation; COVID-19 infections and deaths in the survey villages; and effects of the quarantine on employment, income, education, health care, and government policies to address any negative impacts. The empirical findings of the work established that strict quarantine measures were implemented in rural villages throughout China in February.

Results

There was little spread of COVID-19 in rural communities: an infection rate of 0.001% and zero deaths reported in our sample. However, there were negative social and economic outcomes, including high rates of unemployment, falling household income, rising prices, and disrupted student learning. Health care was generally accessible, but many delayed their non-COVID-19 health care due to the quarantine measures. Only 20% of villagers received any form of local government aid, and only 11% of villages received financial subsidies. There were no reports of national government aid programs that targeted rural villagers in the sample areas.

Conclusions

By examining the economic and social effects of the COVID-19 restrictions in rural communities, this study will help to guide other middle- and low-income countries in their containment and restorative processes. Without consideration for economically vulnerable populations, economic hardships and poverty will likely continue to have a negative impact on the most susceptible communities.
Iran health insurance system in transition: equity concerns and steps to achieve universal health coverage
Authors: Doshmangir Leila , Bazyar Mohammad , Rashidian Arash , Gordeev Vladimir Sergeevich
Published: January 2021

Background

Equity, efficiency, sustainability, acceptability to clients and providers, and quality are the cornerstones of universal health coverage (UHC). No country has a single way to achieve efficient UHC. In this study, we documented the Iranian health insurance reforms, focusing on how and why certain policies were introduced and implemented, and which challenges remain to keep a sustainable UHC.

Methods

This retrospective policy analysis used three sources of data: a comprehensive and chronological scoping review of literature, interviews with Iran health insurance policy actors and stakeholders, and a review of published and unpublished official documents and local media. All data were analysed using thematic content analysis.

Results

Health insurance reforms, especially health transformation plan (HTP) in 2014, helped to progress towards UHC and health equity by expanding population coverage, a benefits package, and enhancing financial protection. However, several challenges can jeopardize sustaining this progress. There is a lack of suitable mechanisms to collect contributions from those without a regular income. The compulsory health insurance coverage law is not implemented in full. A substantial gap between private and public medical tariffs leads to high out-of-pocket health expenditure. Moreover, controlling the total health care expenditures is not the main priority to make keeping UHC more sustainable.

Conclusion

To achieve UHC in Iran, the Ministry of Health and Medical Education and health insurance schemes should devise and follow the policies to control health care expenditures. Working mechanisms should be implemented to extend free health insurance coverage for those in need. More studies are needed to evaluate the impact of health insurance reforms in terms of health equity, sustainability, coverage, and access.
Mitigation of biases in estimating hazard ratios under non-sensitive and non-specific observation of outcomes–applications to influenza vaccine effectiveness
Authors: Baum Ulrike , Kulathinal Sangita , Auranen Kari
Published: January 2021

Background

Non-sensitive and non-specific observation of outcomes in time-to-event data affects event counts as well as the risk sets, thus, biasing the estimation of hazard ratios. We investigate how imperfect observation of incident events affects the estimation of vaccine effectiveness based on hazard ratios.

Methods

Imperfect time-to-event data contain two classes of events: a portion of the true events of interest; and false-positive events mistakenly recorded as events of interest. We develop an estimation method utilising a weighted partial likelihood and probabilistic deletion of false-positive events and assuming the sensitivity and the false-positive rate are known. The performance of the method is evaluated using simulated and Finnish register data.

Results

The novel method enables unbiased semiparametric estimation of hazard ratios from imperfect time-to-event data. False-positive rates that are small can be approximated to be zero without inducing bias. The method is robust to misspecification of the sensitivity as long as the ratio of the sensitivity in the vaccinated and the unvaccinated is specified correctly and the cumulative risk of the true event is small.

Conclusions

The weighted partial likelihood can be used to adjust for outcome measurement errors in the estimation of hazard ratios and effectiveness but requires specifying the sensitivity and the false-positive rate. In absence of exact information about these parameters, the method works as a tool for assessing the potential magnitude of bias given a range of likely parameter values.
Real-time liver tracking algorithm based on LSTM and SVR networks for use in surface-guided radiation therapy
Authors: Wang Guangyu , Li Zhibin , Li Guangjun , Dai Guyu , Xiao Qing , Bai Long , He Yisong , Liu Yaxin , Bai Sen
Published: January 2021

Background

Surface-guided radiation therapy can be used to continuously monitor a patient’s surface motions during radiotherapy by a non-irradiating, noninvasive optical surface imaging technique. In this study, machine learning methods were applied to predict external respiratory motion signals and predict internal liver motion in this therapeutic context.

Methods

Seven groups of interrelated external/internal respiratory liver motion samples lasting from 5 to 6 min collected simultaneously were used as a dataset, Dv. Long short-term memory (LSTM) and support vector regression (SVR) networks were then used to establish external respiratory signal prediction models (LSTMpred/SVRpred) and external/internal respiratory motion correlation models (LSTMcorr/SVRcorr). These external prediction and external/internal correlation models were then combined into an integrated model. Finally, the LSTMcorr model was used to perform five groups of model updating experiments to confirm the necessity of continuously updating the external/internal correlation model. The root-mean-square error (RMSE), mean absolute error (MAE), and maximum absolute error (MAX_AE) were used to evaluate the performance of each model.

Results

The models established using the LSTM neural network performed better than those established using the SVR network in the tasks of predicting external respiratory signals for latency-compensation (RMSE < 0.5 mm at a latency of 450 ms) and predicting internal liver motion using external signals (RMSE < 0.6 mm). The prediction errors of the integrated model (RMSE ≤ 1.0 mm) were slightly higher than those of the external prediction and external/internal correlation models. The RMSE/MAE of the fifth model update was approximately ten times smaller than that of the first model update.

Conclusions

The LSTM networks outperform SVR networks at predicting external respiratory signals and internal liver motion because of LSTM’s strong ability to deal with time-dependencies. The LSTM-based integrated model performs well at predicting liver motion from external respiratory signals with system latencies of up to 450 ms. It is necessary to update the external/internal correlation model continuously.
Best practice guidelines in managing the craniofacial aspects of skeletal dysplasia
Authors:   on behalf of the Skeletal Dysplasia Management Consortium, Savarirayan Ravi , Tunkel David E. , Sterni Laura M. , Bober Michael B. , Cho Tae-Joon , Goldberg Michael J. , Hoover-Fong Julie , Irving Melita , Kamps Shawn E. , Mackenzie William G. , Raggio Cathleen , Spencer Samantha A. , Bompadre Viviana , White Klane K.
Published: January 2021

Background

Recognition and appropriate management of the craniofacial manifestations of patients with skeletal dysplasia are challenging, due to the rarity of these conditions, and dearth of literature to support evidence-based clinical decision making.

Methods

Using the Delphi method, an international, multi-disciplinary group of individuals, with significant experience in the care of patients with skeletal dysplasia, convened to develop multi-disciplinary, best practice guidelines in the management of craniofacial aspects of these patients.

Results

After a comprehensive literature review, 23 initial statements were generated and critically discussed, with subsequent development of a list of 22 best practice guidelines after a second round voting.

Conclusions

The guidelines are presented and discussed to provide context and assistance for clinicians in their decision making in this important and challenging component of care for patients with skeletal dysplasia, in order standardize care and improve outcomes.
Management of unexplained: poly-consultation and hyperfrequency on Primary Health Chilean Attention. A qualitative and exploratory study
Authors: Fuster Sánchez Nicolás , Rivera López Diego , Sir Retamales Hugo , Gómez Pérez Constanza , Rodríguez Torres Magdalena
Published: January 2021

Background

In Europe, Latin-America, and Asia, poly-consultation has become a complex problem for managing different healthcare systems. However, in the current literature, little attention has been paid to exploring territorial and critical analysis perspectives to manage unexplained symptoms. The purpose of this study is to analyze the socio-structural elements that underlie the users’ phenomenon of poly-consultation or hyperfrequency in the Chilean primary healthcare system (PHCS).

Methods

This paper represents qualitative data collected as part of an exploratory study that used mixed methods across three metropolitan areas of Santiago, Valparaíso, and Concepción, Chile. The study involved a sample of 24 subjects from administrative and management positions in PHC who were recruited from Family Health Care Centers, considering urban municipalities from the low, medium, and high stratum. The study collected data using one set of semi-standardized interviews during a year—data analysis using qualitative content analysis.

Results

This article shows that poly-consultant patients provide a critical clinic category to management that cannot be cover by current biomedical models. Data showed the strain of a somatoform category, especially in the clinic and epistemological exercise. Precisely, the relevance of Chile’s case, a mixed health system, and their effects: the naturalization of collective problems managed as individual problems.

Conclusions

The study results can inform healthcare professionals and managers of developing practical and territorially based. We conclude that hyperfrequency and poly-consultation in Chile reveal relevant stratification in the territory. Those particularities open an opportunity to study quantitative methods, including current analysis categories, to develop new research.
Hyperthyroidism in gestational trophoblastic disease – a literature review
Authors: Pereira Jarett Vanz-Brian , Lim Taylor
Published: January 2021

Objective

Gestational trophoblastic disease (GTD) is a group of pregnancy-related disorders that arise from abnormal proliferation of placental trophoblast. Some patients with GTD develop hyperthyroidism, a rare but potentially life-threatening complication requiring early detection and management. Existing literature on hyperthyroidism in GTD is scant. This review aims to analyse the epidemiology, pathophysiology and management of this phenomenon.

Methods

A comprehensive search of MEDLINE, EMBASE and Cochrane Library was performed to obtain articles that explored hyperthyroidism in GTD. A total of 405 articles were screened and 228 articles were considered for full-text review. We selected articles that explored epidemiology, pathophysiology and outcomes/management of hyperthyroidism in GTD.

Results

The pathophysiology of hyperthyroidism in GTD is well-investigated. Placental trophoblastic tissue secretes excessive hCG, which is structurally similar to thyroid stimulating hormone and also has enhanced thyrotropic activity compared to normal hCG. The incidence and prevalence of hyperthyroidism in GTD varies worldwide, with lower rates associated with high uptake of early antenatal screening and early GTD detection. No clear risk factors for hyperthyroidism in GTD were identified. While hyperthyroidism can be definitively managed with surgical evacuation of the uterus, severe complications associated with hyperthyroidism in GTD have been reported, including thyroid storm-induced multi-organ failure, ARDS, and pulmonary hypertension.

Conclusion

Early detection of GTD is critical to prevent development of hyperthyroidism and its associated complications. Hyperthyroidism should be recognised as an important perioperative consideration for women undergoing surgery for GTD, and requires appropriate management. Future studies should explore risk factors for hyperthyroidism in GTD, which may facilitate earlier identification of high-risk women.
STOML2 potentiates metastasis of hepatocellular carcinoma by promoting PINK1-mediated mitophagy and regulates sensitivity to lenvatinib
Authors: Zheng Yahui , Huang Chong , Lu Lu , Yu Kangkang , Zhao Jing , Chen Mingquan , Liu Lu , Sun Qingfeng , Lin Zhifei , Zheng Jianming , Chen Jinhong , Zhang Jubo
Published: January 2021

Background

Dysregulation of both mitochondrial biogenesis and mitophagy is critical to sustain oncogenic signaling pathways. However, the mechanism of mitophagy in promoting hepatocellular carcinoma (HCC) progression remains poorly understood. In this study, we investigated the clinical significance and biological involvement of mitochondrial inner membrane protein STOML2 in HCC.

Methods

STOML2 was identified by gene expression profiles of HCC tissues and was measured in tissue microarray and cell lines. Gain/loss-of-function experiment was applied to study the biological function of STOML2 in HCC. Flow cytometry, Western blotting, laser confocal microscopy, transmission electron microscopy, and co-immunoprecipitation were used to detect and analyze mitophagy. ChIP and luciferase reporter assay were conducted to evaluate the relationship between STOML2 and HIF-1α. The sensitivity to lenvatinib was assessed in HCC both in vitro and in vivo.

Results

Increased expression of STOML2 was found in HCC compared with paired peritumoral tissues. It was more significant in HCC with metastasis and correlated with worse overall survival and higher probability of recurrence after hepatectomy. Upregulation of STOML2 accelerated HCC cells colony formation, migration and invasion. Mechanically, TCGA dataset-based analysis showed enrichment of autophagy-related pathways in STOML2 highly-expressed HCC. Next, STOML2 was demonstrated to interact and stabilize PINK1 under cellular stress, amplify PINK1-Parkin-mediated mitophagy and then promote HCC growth and metastasis. Most interestingly, HIF-1α was upregulated and transcriptionally increased STOML2 expression in HCC cells under the treatment of lenvatinib. Furthermore, higher sensitivity to lenvatinib was found in HCC cells when STOML2 was downregulated. Combination therapy with lenvatinib and mitophagy inhibitor hydroxychloroquine obtained best efficacy.

Conclusions

Our findings suggested that STOML2 could amplify mitophagy through interacting and stabilizing PINK1, which promote HCC metastasis and modulate the response of HCC to lenvatinib. Combinations of pharmacologic inhibitors that concurrently block both angiogenesis and mitophagy may serve as an effective treatment for HCC.