bluuebunny/crossref_metadata_2025_split huggingface dataset:
In vivo fluorescence molecular tomography of induced haemarthrosis in haemophilic mice: link between bleeding characteristics and development of bone pathology
Authors: Vøls K. K. , Kjelgaard-Hansen M. , Ley C. D. , Hansen A. K. , Petersen M. 
Published: April 2020

Abstract
Background
Haemophilic arthropathy is a chronic and debilitating joint disease caused by recurrent spontaneous joint bleeds in patients with haemophilia. Understanding how characteristics of individual joint bleeds relate to the subsequent development of arthropathy could improve management and prevention of this joint disease. Here, we aimed to explore relations between joint bleed characteristics and development of bone pathology in a mouse model of haemophilic arthropathy by using novel in vivo imaging methodology.

Methods
We characterised induced knee bleeds in a murine model of haemophilic arthropathy by quantitative in vivo fluorescence molecular tomography (FMT) and by measurements of changes in the diameter of the injured knee. Wild-type mice and non-injured haemophilic mice acted as controls. Development of arthropathy was characterised by post mortem evaluation of bone pathology by micro-CT 14 days after bleed-induction. In an in vitro study, we assessed the effect of blood on the quantification of fluorescent signal with FMT.

Results
In most injured haemophilic mice, we observed significant loss of trabecular bone, and half of the mice developed pathological bone remodelling. Development of pathological bone remodelling was associated with significantly increased fluorescent signal and diameter of the injured knee just 1 day after induction of the bleed. Further, a correlation between the fluorescent signal 1 day after induction of the bleed and loss of trabecular bone reached borderline significance. In the in vitro study, we found that high concentrations of blood significantly decreased the fluorescent signal.

Conclusion
Our results add novel insights on the pathogenesis of haemophilic arthropathy and underline the importance of the acute phase of joint bleeds for the subsequent development of arthropathy.
Surgical treatment of atlantoaxial subluxation by intraoperative skull traction and C1-C2 fixation
Authors: Guo Jianwei , Lu Wencan , Ji Xiangli , Ren Xianfeng , Tang Xiaojie , Zhao Zheng , Hu Huiqiang , Song Tao , Du Yukun , Li Jianyi , Shao Cheng , Xu Tongshuai , Xi Yongming 
Published: April 2020

Abstract
Background
Atlantoaxial subluxation (AAS) is a not rare abnormality between the atlas (C1) and axis (C2). For AAS patients with persistent neck pain and neurologic symptoms, surgical intervention is a good choice. Nevertheless, there were still few reports about the use of intraoperative skull traction and different fixation methods in treatment of AAS.

Methods
From January 2012 to December 2018, a total of 86 cases were admitted to our hospital and diagnosed as AAS. All the patients received atlantoaxial reduction with the help of intraoperative skull traction and C1-C2 fixation. Clinical and radiological parameters were collected through chart review.

Results
There were 86 cases included in this study. The mean operative time was 153.9 ± 73.9 min, and the mean amount of intraoperative blood loss was 219.1 ± 195.6 ml. 81 patients underwent posterior reduction, internal fixation and fusion. 5 patients underwent anterior release, followed by posterior internal fixation and fusion. 82 patients got satisfactory postoperative outcomes while complications occurred in 4 patients. Significant neurologic improvement was observed in these patients. Bone fusion was achieved on the midline sagittal reconstructed CT images at the latest follow-up in all these patients except 1 case. All the patients were followed up for 34.84 ± 15.86 months at average (range 12–60 months). The mean ADI value was 7.55 ± 1.67 mm at average preoperatively, and improved to 4.03 ± 1.21 mm postoperatively, and to 4.21 ± 0.99 mm at the latest follow-up. The mean A-A angle was 15.48 ± 9.82 degrees at average preoperatively, and improved to 21.61 ± 10.43 degrees postoperatively, and to 19.73 ± 8.13 degrees at the latest follow-up. The mean A-A height was 35.61 ± 7.66 mm at average preoperatively, and improved to 40.08 ± 8.5 mm postoperatively, and to 38.83 ± 6.97 mm at the latest follow-up. There were complications in 4 patients, including pedicle misplacement, pedicle screw fracture, infection and one death.

Conclusion
Intraoperative skull traction can effectively facilitate the surgical procedures for ASS caused by different etiologies. Further research will be needed to investigate the safety and effectiveness of this method in the future.
Perception of health, health behaviours and the use of prophylactic examinations in postmenopausal women
Authors: Pilewska-Kozak Anna B. , Pałucka Klaudia , Łepecka-Klusek Celina , Stadnicka Grażyna , Jurek Krzysztof , Dobrowolska Beata B. 
Published: April 2020

Abstract
Background
Pro-health behaviours aim at disease prevention, recovery from an illness and maintenance of good health in a physical, mental and social sphere. The study had two main objectives: (a) to analyse health behaviours of postmenopausal women and their understanding of the notion of health, and (b) to analyse the relationship between individual categories of health behaviours and prophylactic activities undertaken by postmenopausal women.

Methods
A cross-sectional study was conducted among a convenience sample of 510 postmenopausal women. Three study instruments were used: an original questionnaire and two instruments designed by Juczyński: the List of Health Criteria and the Health Behaviour Inventory.

Results
In the view of the respondents health was primarily synonymous with a feature, because the following three associations were given the highest priority when defining health: to be healthy means ‘have all body parts functioning well’ (M = 1.82), ‘do not experience any physical problems’ (M = 1.43) and ‘not be sick, only occasionally suffer from flu, cold or indigestion’. The score for health behaviours was average (M = 86.18). The highest score was achieved in the area of prophylactic behaviours. General indicator of health-related behaviours was higher in women who rated their health as very good (p < 0.05). Women whose general indicator of health-related behaviours was higher regularly performed prophylactic gynaecological examinations (p < 0.05).

Conclusions
Results showed that women after menopause treat health mainly as a feature of their body and condition specific for this period of life. The analysis of postmenopausal women’s health behaviours and their perception of health helped to identify areas that require the focus of medical personnel in regard to health promotion and prophylaxis. The average general indicator of health-related behaviours is positive for this group of women as it shows that they care about their health, especially in terms of prophylaxis.
Enhancing the monitoring of fallen stock at different hierarchical administrative levels: an illustration on dairy cattle from regions with distinct husbandry, demographical and climate traits
Authors: Fernández-Fontelo Amanda , Puig Pedro , Caceres German , Romero Luis , Revie Crawford , Sanchez Javier , Dorea Fernanda C. , Alba-Casals Ana 
Published: April 2020

Abstract
Background
The automated collection of non-specific data from livestock, combined with techniques for data mining and time series analyses, facilitates the development of animal health syndromic surveillance (AHSyS). An example of AHSyS approach relates to the monitoring of bovine fallen stock. In order to enhance part of the machinery of a complete syndromic surveillance system, the present work developed a novel approach for modelling in near real time multiple mortality patterns at different hierarchical administrative levels. To illustrate its functionality, this system was applied to mortality data in dairy cattle collected across two Spanish regions with distinct demographical, husbandry, and climate conditions.

Results
The process analyzed the patterns of weekly counts of fallen dairy cattle at different hierarchical administrative levels across two regions between Jan-2006 and Dec-2013 and predicted their respective expected counts between Jan-2014 and Jun- 2015. By comparing predicted to observed data, those counts of fallen dairy cattle that exceeded the upper limits of a conventional 95% predicted interval were identified as mortality peaks. This work proposes a dynamic system that combines hierarchical time series and autoregressive integrated moving average models (ARIMA). These ARIMA models also include trend and seasonality for describing profiles of weekly mortality and detecting aberrations at the region, province, and county levels (spatial aggregations). Software that fitted the model parameters was built using the R statistical packages.

Conclusions
The work builds a novel tool to monitor fallen stock data for different geographical aggregations and can serve as a means of generating early warning signals of a health problem. This approach can be adapted to other types of animal health data that share similar hierarchical structures.
TLR2 and caspase-1 signaling are critical for bacterial containment but not clearance during craniotomy-associated biofilm infection
Authors: Aldrich Amy L. , Heim Cortney E. , Shi Wen , Fallet Rachel W. , Duan Bin , Kielian Tammy 
Published: April 2020

Abstract
Background
A craniotomy is required to access the brain for tumor resection or epilepsy treatment, and despite precautionary measures, infectious complications occur at a frequency of 1–3%. Approximately half of craniotomy infections are caused by Staphylococcus aureus (S. aureus) that forms a biofilm on the bone flap, which is recalcitrant to antibiotics. Our prior work in a mouse model of S. aureus craniotomy infection revealed a critical role for myeloid differentiation factor 88 (MyD88) in bacterial containment and pro-inflammatory mediator production. Since numerous receptors utilize MyD88 as a signaling adaptor, the current study examined the importance of Toll-like receptor 2 (TLR2) and TLR9 based on their ability sense S. aureus ligands, namely lipoproteins and CpG DNA motifs, respectively. We also examined the role of caspase-1 based on its known association with TLR signaling to promote IL-1β release.

Methods
A mouse model of craniotomy-associated biofilm infection was used to investigate the role of TLR2, TLR9, and caspase-1 in disease progression. Wild type (WT), TLR2 knockout (KO), TLR9 KO, and caspase-1 KO mice were examined at various intervals post-infection to quantify bacterial burden, leukocyte recruitment, and inflammatory mediator production in the galea, brain, and bone flap. In addition, the role of TLR2-dependent signaling during microglial/macrophage crosstalk with myeloid-derived suppressor cells (MDSCs) was examined.

Results
TLR2, but not TLR9, was important for preventing S. aureus outgrowth during craniotomy infection, as revealed by the elevated bacterial burden in the brain, galea, and bone flap of TLR2 KO mice concomitant with global reductions in pro-inflammatory mediator production compared to WT animals. Co-culture of MDSCs with microglia or macrophages, to model interactions in the brain vs. galea, respectively, also revealed a critical role for TLR2 in triggering pro-inflammatory mediator production. Similar to TLR2, caspase-1 KO animals also displayed increased S. aureus titers coincident with reduced pro-inflammatory mediator release, suggestive of pathway cooperativity. Treatment of caspase-1 KO mice with IL-1β microparticles significantly reduced S. aureus burden in the brain and galea compared to empty microparticles, confirming the critical role of IL-1β in limiting S. aureus outgrowth during craniotomy infection.

Conclusions
These results demonstrate the existence of an initial anti-bacterial response that depends on both TLR2 and caspase-1 in controlling S. aureus growth; however, neither pathway is effective at clearing infection in the WT setting, since craniotomy infection persists when both molecules are present.
Health policy mapping and system gaps impeding the implementation of reproductive, maternal, neonatal, child, and adolescent health programs in South Sudan: a scoping review
Authors: Belaid Loubna , Bayo Pontius , Kamau Lynette , Nakimuli Eva , Omoro Elijo , Lobor Robert , Samson Baba , Dimiti Alexander 
Published: April 2020

Abstract
Background
Pregnant women, neonates, children, and adolescents are at higher risk of dying in fragile and conflict-affected settings. Strengthening the healthcare system is a key strategy for the implementation of effective policies and ultimately the improvement of health outcomes. South Sudan is a fragile country that faces challenges in implementing its reproductive, maternal, neonatal, child, and adolescent health (RMNCAH) policies. In this paper, we map the key RMNCAH policies and describe the current status of the WHO health system building blocks that impede the implementation of RMNCAH policies in South Sudan.

Methods
We conducted a scoping review (39 documents) and individual interviews (n = 8) with staff from the national Ministry of Health (MoH) and implementing partners. We organized a workshop to discuss and validate the findings with the MoH and implementing partner staff. We synthesized and analyzed the data according to the WHO health system building blocks.

Results
The significant number of policies and healthcare strategic plans focused on pregnant women, neonates, children, and adolescents evidence the political will of the MoH to improve the health of members of these categories of the population. The gap in the implementation of policies is mainly due to the weaknesses identified in different health system building blocks. A critical shortage of human resources across the blocks and levels of the health system, a lack of medicines and supplies, and low national funding are the main identified bottlenecks. The upstream factors explaining these bottlenecks are the 2012 suspension of oil production, ongoing conflict, weak governance, a lack of accountability, and a low human resource capacity. The combined effects of all these factors have led to poor-quality provision and thus a low use of RMNCAH services.

Conclusion
The implementation of RMNCAH policies should be accomplished through innovative and challenging approaches to building the capacities of the MoH, establishing governance and accountability mechanisms, and increasing the health budget of the national government.
RANKL blockade alleviates peri-implant bone loss and is enhanced by anti-inflammatory microRNA-146a through TLR2/4 signaling
Authors: Pan Keqing , Hu Yang , Wang Yufeng , Li Hao , Patel Michele , Wang Danyang , Wang Zuomin , Han Xiaozhe 
Published: April 2020

Abstract
Background
The present study was to determine the effect of local anti-RANKL antibody administration in the presence or absence of microRNA-146a on ligature-induced peri-implant bone resorption, and the potential role of TLR2/4 signaling in such effect.

Results
Titanium implants were placed in the left maxilla alveolar bone 6 weeks after extraction of first and second molars in C57/BL6 wild-type (WT) and TLR2−/− TLR4−/− (TLR2/4 KO) mice. Silk ligatures were tied around the implants 4 weeks after implantation. Anti-RANKL antibody (500 μg/mL) with or without microRNA 146a (miR-146a) (100 nM) was injected into palatal gingiva around implant on days 3, 6, and 9 during 2 weeks of ligation period. Bone resorption around the implants was assessed by 2D imaging using area measurement and 3D imaging using micro-computed tomography (μCT). Real-time quantitative PCR (RT-qPCR) was used to determine the peri-implant gingival mRNA expression levels of pro-inflammatory cytokines (TNF-α) and osteoclastogenesis-related cytokines (RANKL). In both WT and TLR2/4 KO mice, the bone resorption around implants was significantly increased in the ligation only group when compared to the non-ligation group, but TLR2/4 KO mice showed significantly less bone loss compared to WT mice after ligation. As expected, gingival injection of anti-RANKL antibody significantly reduced bone loss compared with the ligation only group in both WT and TLR2/4 KO mice. Moreover, injection of miR-146a in addition to anti-RANKL antibody significantly enhanced the inhibition of bone loss in WT mice but not in TLR2/4 KO mice. Gingival mRNA expressions of RANKL were significantly reduced by anti-RANKL antibody treatment in both WT and TLR2/4 KO mice but were not affected by the additional miR-146a treatment. Gingival mRNA expression of TNF-α was significantly reduced by miR-146a treatment in WT mice but not in TLR2/4 KO mice. The number of gingival inflammatory cell infiltration and peri-implant TRAP-positive cell formation was significantly reduced by the additional miR-146a treatment in WT mice but not in TLR2/4 KO mice.

Conclusions
This study suggests that anti-inflammatory miR-146a enhance anti-RANKL-induced inhibition of peri-implant bone resorption through the regulation of TLR2/4 signaling and inhibition of TNF-α expression.
Measuring serum estradiol and progesterone one day prior to frozen embryo transfer improves live birth rates
Authors: Alur-Gupta Snigdha , Hopeman Margaret , Berger Dara S. , Barnhart Kurt T. , Senapati Suneeta , Gracia Clarisa 
Published: April 2020

Abstract
Background
Given no consensus in the literature, this study sought to determine if a protocol of measuring serum estradiol and progesterone the day prior to frozen embryo transfer (FET) improves likelihood of pregnancy and livebirth.

Methods
This was a retrospective time-series study of women undergoing autologous vitrified-warmed blastocyst programmed FETs at an academic institution. Live birth rates were compared between a surveillance protocol, where serum estrogen and progesterone surveillance are performed the day prior to a programmed FET, and a standard protocol, whereby no hormonal lab evaluation is performed the day prior.

Results
Three hundred seventy-nine standard FET and 524 surveillance FET cycles were performed. Patients in the surveillance protocol were significantly more likely to achieve live birth (51% vs. 39%; aOR 1.6, 95%CI [1.2, 2.2]). Obese women were noted to be more likely to have lower progesterone hormone levels on surveillance labs (OR 3.2, 95%CI [2.0, 5.3]). However those whose hormonal medication dose was modified because of pre-transfer labs were as likely to achieve live birth as those whose dose was not modified (47% vs. 53%; aOR 0.8, 95%CI [0.6, 1.2]).

Conclusions
Cycles with the surveillance protocol were more likely to result in live birth. Patients with low levels of pre-transfer hormones, such as obese patients, likely have lower pregnancy rates. It is possible that when these levels were corrected after measurement, pregnancy rates improved to match those whose levels were not low enough to warrant intervention.
Anti-melanogenic activity of methanolic extract from leaves of Sorbaria sorbifolia var. stellipila Max. on α-MSH-stimulated B16 melanoma 4A5 cells
Authors: Nishi Kosuke , Mori Mizuki , Nakayama Daisuke , Sato Junna , Kim In-Hae , Kim Minju , Kim Songmun , Sugahara Takuya 
Published: April 2020

Abstract
Background
Melanin is a pigment, which is widely distributed in organisms. In humans, melanin pigments determine eye, hair, and skin color and protect the skin from damage by ultraviolet radiation; however, immoderate distribution of melanin in the skin causes discoloration. In the present study, we screened methanolic extracts from leaves of 47 plant species, most of which are native to East Asia, for the inhibitory activity against melanogenesis.

Methods
B16 melanoma 4A5 cells were used in all assays conducted in this study. Melanin content assay was performed using methanolic extracts from leaves of 47 plant species. Cytotoxicity of the extract from leaves of Sorbaria sorbifolia var. stellipila Max. (SME) was evaluated by WST-8 assay. Tyrosinase activity was determined using the lysate of α-MSH-stimulated B16 melanoma 4A5 cells and L-dopa as a colorimetric substrate. Melanogenic gene expression was determined by quantitative reverse transcription-polymerase chain reaction (qRT-PCR).

Results
SME showed the highest inhibitory activity among tested samples without cytotoxicity. SME exhibited the inhibition potency for the enzymatic activity of tyrosinase. In addition, qRT-PCR result displayed that SME downregulates the expression of melanogenic genes including tyrosinase, TRP-1, TRP-2, and the transcription factor MITF.

Conclusion
Overall results revealed that the extract from leaves of S. sorbifolia var. stellipila Max. has a potential to be used as a skin whitening agent.
The impact of the illness label ‘gout’ on illness and treatment perceptions in Māori (Indigenous New Zealanders)
Authors: Dalbeth Nicola , Douglas Meihana , MacKrill Kate , Te Karu Leanne , Kleinstäuber Maria , Petrie Keith J. 
Published: April 2020

Abstract
Background
Despite contemporary advances in understanding pathogenesis and effective management of gout, beliefs about the disease continue to be focused on gout as a self-inflicted illness. The illness label itself may contribute to inaccurate perceptions of the disease and its management. In Aotearoa/New Zealand, Māori (Indigenous New Zealanders) have high prevalence of severe gout. The aim of this study was to examine the impact of the illness label ‘gout’ on perceptions of the disease and its management for Māori.

Methods
Māori supermarket shoppers (n = 172) in rural and urban locations were recruited into a study examining the perceptions about arthritis. Participants were randomised 1:1 to complete a questionnaire examining the perceptions of the same illness description labelled as either ‘gout’ or ‘urate crystal arthritis’. Differences between the two illness labels were tested using independent sample t-tests.

Results
‘Gout’ was most likely to be viewed as caused by diet, whereas ‘urate crystal arthritis’ was most likely to be viewed as caused by aging. ‘Urate crystal arthritis’ was seen as having a wider range of factors responsible for the illness, including stress or worry, hereditary factors and chance. ‘Gout’ was less likely to be viewed as having a chronic timeline, and was perceived as being better understood. Dietary management strategies were seen as more helpful for management of the gout-labelled illness.

Conclusions
This study has demonstrated that for Māori, Indigenous New Zealanders who are disproportionately affected by gout, the illness label influences perceptions about gout and beliefs about management.