bluuebunny/crossref_metadata_2025 huggingface dataset:
Insights into heterosis from histone modifications in the flag leaf of inter-subspecific hybrid rice
Authors: Qi Tianpu , Wang Mengyao , Wang Peixuan , Wang Linyou , Wang Jianbo
Published: August 2024

Background

Inter-subspecific hybrid rice represents a significant breakthrough in agricultural genetics, offering higher yields and better resilience to various environmental stresses. While the utilization of these hybrids has shed light on the genetic processes underlying hybridization, understanding the molecular mechanisms driving heterosis remains a complex and ongoing challenge. Here, chromatin immunoprecipitation-sequencing (ChIP-seq) was used to analyze genome-wide profiles of H3K4me3 and H3K27me3 modifications in the inter-subspecific hybrid rice ZY19 and its parents, Z04A and ZHF1015, then combined them with the transcriptome and DNA methylation data to uncover the effects of histone modifications on gene expression and the contribution of epigenetic modifications to heterosis.

Results

In the hybrid, there were 8,126 and 1,610 different peaks for H3K4me3 and H3K27me3 modifications when compared to its parents, respectively, with the majority of them originating from the parental lines. The different modifications between the hybrid and its parents were more frequently observed as higher levels in the hybrid than in the parents. In ZY19, there were 476 and 84 allele-specific genes with H3K4me3 and H3K27me3 modifications identified, representing 7.9% and 12% of the total analyzed genes, respectively. Only a small portion of genes that showed differences in parental H3K4me3 and H3K27me3 modifications which demonstrated allele-specific histone modifications (ASHM) in the hybrid. The H3K4me3 modification level in the hybrid was significantly lower compared to the parents. In the hybrid, DNA methylation occurs more frequently among histone modification target genes. Additionally, over 62.58% of differentially expressed genes (DEGs) were affected by epigenetic variations. Notably, there was a strong correlation observed between variations in H3K4me3 modifications and gene expression levels in the hybrid and its parents.

Conclusion

These findings highlight the substantial impact of histone modifications and DNA methylation on gene expression during hybridization. Epigenetic variations play a crucial role in controlling the differential expression of genes, with potential implications for heterosis.
An effective no-reference image quality index prediction with a hybrid Artificial Intelligence approach for denoised MRI images
Authors: Radhabai Prianka Ramachandran , KVN Kavitha , Shanmugam Ashok , Imoize Agbotiname Lucky
Published: August 2024

As the quantity and significance of digital pictures in the medical industry continue to increase, Image Quality Assessment (IQA) has recently become a prevalent subject in the research community. Due to the wide range of distortions that Magnetic Resonance Images (MRI) can experience and the wide variety of information they contain, No-Reference Image Quality Assessment (NR-IQA) has always been a challenging study issue. In an attempt to address this issue, a novel hybrid Artificial Intelligence (AI) is proposed to analyze NR-IQ in massive MRI data. First, the features from the denoised MRI images are extracted using the gray level run length matrix (GLRLM) and EfficientNet B7 algorithm. Next, the Multi-Objective Reptile Search Algorithm (MRSA) was proposed for optimal feature vector selection. Then, the Self-evolving Deep Belief Fuzzy Neural network (SDBFN) algorithm was proposed for the effective NR-IQ analysis. The implementation of this research is executed using MATLAB software. The simulation results are compared with the various conventional methods in terms of correlation coefficient (PLCC), Root Mean Square Error (RMSE), Spearman Rank Order Correlation Coefficient (SROCC) and Kendall Rank Order Correlation Coefficient (KROCC), and Mean Absolute Error (MAE). In addition, our proposed approach yielded a quality number approximately we achieved significant 20% improvement than existing methods, with the PLCC parameter showing a notable increase compared to current techniques. Moreover, the RMSE number decreased by 12% when compared to existing methods. Graphical representations indicated mean MAE values of 0.02 for MRI knee dataset, 0.09 for MRI brain dataset, and 0.098 for MRI breast dataset, showcasing significantly lower MAE values compared to the baseline models.
Outcomes of sutured scleral-fixated intraocular lens implantation combined with penetrating keratoplasty
Authors: Almulhim Abdulmohsen , Alsarhani Waleed K. , Alanazi Bader , Alfaleh Abdulrahman , Aljindan Mohanna , Al Malawi Rahaf M. , Al-Somali Abdulaziz
Published: August 2024

Background

The purpose of the study was to assess visual outcomes, complications, intraocular lens (IOL) stability, and corneal status after sutured scleral-fixated intraocular lens implantation combined with penetrating keratoplasty (PKP).

Methods

This retrospective single-arm cohort study included patients who underwent PKP and sutured scleral-fixated intraocular lens implantation between 2013 and 2018 at the Dhahran Eye Specialty Hospital. The eyes were examined postoperatively at 1, 3, 6, 12, and 24 months. Corneal status, complications, and IOL status were also evaluated periodically, and the number of eyes with a BCVA of > 20/200 was recorded.

Results

Twenty-two eyes from 22 patients were included. The median duration of follow-up was 3 (IQR 1.8; 4.4) years. Reasons for surgery were traumatic globe rupture (six eyes, 27.3%), bullous keratopathy (nine eyes, 40.1%), failed previous graft (five eyes, 22.7%), and corneal scarring (two eyes, 9.1%). Twelve (54.5%) eyes showed a BCVA of > 20/200 (non-blind) at 12 months after surgery and only five (22.7%) before surgery. Twelve months after surgery, 13 patients showed an improvement in BCVA in two lines (59.1%), seven remained the same (31.8%), and 2 deteriorated (9.1%). The indication for surgery (p = 0.2) and the stability of the sutured-scleral fixated IOL (p = 0.8) were not associated with an improvement in BCVA at the final follow-up. The corneal graft remained clear in nine eyes (40.9%) at a median duration of 3 years. The overall average survival period for all corneal grafts was 42.9 months.

Conclusions

The combination of sutured scleral-fixated intraocular lens implants and PKP is an effective intervention for preserving visual acuity in patients with complex cases. However, the risk of graft failure and then need for repeat transplantation should be taken into consideration.
The risk of sleep-related death in an inclined sleep environment
Authors: Sangaré Laura R. , Kaufman Lance , Bardwell Robert A. , Nichols Deborah , Bryan Mersine
Published: August 2024

Background

Unsafe sleep environments are the primary modifiable risk factor for sudden unexpected infant death (SUID). Despite this knowledge, products that deviate from the American Academy of Pediatrics (AAP) safe sleep recommendations continue to be commonplace, such as inclined sleepers. Analyses to estimate risk among these products are lacking, perpetuating their presence in the marketplace. We present a method of comparing risk of SUID in an inclined sleeper to an AAP-recommended sleep environment.

Methods

A case-control analysis using publicly available and previously published survey data was conducted for SUID events occurring between January 1, 2018 and April 12, 2019 (the date of the first inclined sleeper recall). SUID deaths were categorized as occurring in an AAP-recommended sleep environments or in an inclined sleeper. Exposure Odds Ratios (OR) are reported as the risk of SUID among infants using inclined sleepers relative to an AAP-recommended sleep environment.

Results

During the study period, 4,900,573 births and 4,363 SUID deaths occurred in the US. Control characteristics were similar between previous night users of an AAP-recommended sleep environment (24%) and inclined sleepers (3.8%). Inclined sleepers were associated with a 5-fold (OR: 5.1; 95% CI: 3.2, 7.9) increased risk of SUID among infants < 12 months compared to infants in an AAP-recommended sleep environment. This risk was greatest among infants ≥ 4 months (RR: 10.4; 95% CI: 5.1, 21.5).

Conclusions

This novel analysis fills a longstanding gap in risk assessments of inclined infant sleep products. More timely risk analyses may improve the safety of the marketplace.
Factors influencing nurses’ satisfaction to online learning approach: a cross ICU analysis
Authors: Lee Shu-Yen , Chang Ching-Yi
Published: August 2024

Background

Given the increasing complexity of illnesses and rapid pace of technological advancements in professional training, it is vital to offer nurses ample opportunities to hone their clinical expertise and skills, particularly in ensuring the delivery of premier medical care. This study aimed to determine the factors and predictors influencing nurses’ satisfaction with adopting mobile learning approaches in intensive care unit healthcare settings. Additionally, it sought to investigate the applicability of the technology acceptance model in explaining their inclinations and validating the measurement scales employed in the research.

Methods

The study employed a cross-sectional survey research design, utilizing a technology acceptance questionnaire and a learning satisfaction questionnaire. The survey was conducted in six intensive care unit departments. A total of 212 participants completed the survey as the primary instrument. Rigorous assessments were conducted to establish the content validity and ensure instrument reliability.

Results

The findings demonstrated that perceived usefulness was the most influential factor affecting nurses’ intentions to embrace mobile learning approaches, with perceived ease of use emerging as the principal determinant of perceived usefulness.

Conclusions

Incorporating mobile learning methodologies is paramount to increasing the calibration of professional nursing education programs. By effectively integrating digital information technology and tools, nursing educators can overcome teaching challenges, deliver innovative clinical nursing education content through mobile learning approaches, and foster optimal development in the field.
Whole-genome sequencing and pathogenicity analysis of Rhodococcus equi isolated in horses
Authors: Hu Bin , Gao Sichao , Zhang Hao , Li Qiaoqiao , Li Gaojian , Zhang Shuairan , Xing Yanan , Huang Yanyi , Han Shuyi , Tian Ying , Zhang Wei , He Hongxuan
Published: August 2024

Background

Rhodococcus equi (R. equi) is a Gram-positive zoonotic pathogen that frequently leads to illness and death in young horses (foals). This study presents the complete genome sequence of R. equi strain BJ13, which was isolated from a thoroughbred racehorse breeding farm in Beijing, China.

Results

The BJ13 genome has a length of 5.30 Mb and consists of a complete chromosome and a plasmid measuring 5.22 Mb and 0.08 Mb, respectively. We predicted 4,929 coding gene open reading frames, along with 52 tRNAs and 12 rRNAs. Through analysis of mobile genetic elements, we identified 6 gene islands and 1 prophage gene. Pathogenic system analysis predicted the presence of 418 virulence factors and 225 drug resistance genes. Secretion system analysis revealed the prediction of 297 secreted proteins and 1,106 transmembrane proteins. BJ13 exhibits genomic features, virulence-associated genes, potential drug resistance, and a virulence plasmid structure that may contribute to the evolution of its pathogenicity. Lastly, the pathogenicity of the isolated strain was assessed through animal experiments, which resulted in inflammatory reactions or damage in the lungs, liver, and spleen of mice. Moreover, by the 7th day post-infection, the mortality rate of the mice reached 50.0%, indicating complex immune regulatory mechanisms, including overexpression of IL-10 and increased production of pro-inflammatory cytokines like TNF-α. These findings validate the strong pathogenicity of the isolated strain and provide insights for studying the pathogenic mechanisms of Rhodococcus equi infection.

Conclusions

The complete genome sequence of R. equi strain BJ13 provides valuable insights into its genomic characteristics, virulence potential, drug resistance, and secretion systems. The strong pathogenicity observed in animal experiments underscores the need for further investigation into the pathogenic mechanisms of R. equi infection.
Oral administration of Robinia pseudoacacia L. flower exosome-like nanoparticles attenuates gastric and small intestinal mucosal ferroptosis caused by hypoxia through inhibiting HIF-1α- and HIF-2α-mediated lipid peroxidation
Authors: Wang Dezhi , Zhang Heng , Liao Xingchen , Li Jun , Zeng Jie , Wang Yilin , Zhang Mingjie , Ma Xianzong , Wang Xin , Ren Fangli , Wang Yinyin , Li Meng , Xu Junfeng , Jin Peng , Sheng Jianqiu
Published: August 2024

The prevention and treatment of gastrointestinal mucosal injury caused by a plateau hypoxic environment is a clinical conundrum due to the unclear mechanism of this syndrome; however, oxidative stress and microbiota dysbiosis may be involved. The Robinia pseudoacacia L. flower, homologous to a functional food, exhibits various pharmacological effects, such as antioxidant, antibacterial, and hemostatic activities. An increasing number of studies have revealed that plant exosome-like nanoparticles (PELNs) can improve the intestinal microbiota and exert antioxidant effects. In this study, the oral administration of Robinia pseudoacacia L. flower exosome-like nanoparticles (RFELNs) significantly ameliorated hypoxia-induced gastric and small intestinal mucosal injury in mice by downregulating hypoxia-inducible factor-1α (HIF-1α) and HIF-2α expression and inhibiting hypoxia-mediated ferroptosis. In addition, oral RFELNs partially improved hypoxia-induced microbial and metabolic disorders of the stomach and small intestine. Notably, RFELNs displayed specific targeting to the gastrointestinal tract. In vitro experiments using gastric and small intestinal epithelial cell lines showed that cell death caused by elevated HIF-1α and HIF-2α under 1% O2 mainly occurred via ferroptosis. RFELNs obviously inhibited HIF-1α and HIF-2α expression and downregulated the expression of NOX4 and ALOX5, which drive reactive oxygen species production and lipid peroxidation, respectively, suppressing ferroptosis under hypoxia. In conclusion, our findings underscore the potential of oral RFELNs as novel, naturally derived agents targeting the gastrointestinal tract, providing a promising therapeutic approach for hypoxia-induced gastric and small intestinal mucosal ferroptosis.

Graphical Abstract
Age-dependent changes in phagocytic activity: in vivo response of mouse pulmonary antigen presenting cells to direct lung delivery of charged PEGDA nanoparticles
Authors: Sudduth Emma R. , López Ruiz Aida , Trautmann-Rodriguez Michael , Fromen Catherine A.
Published: August 2024

Background

Current needle-based vaccination for respiratory viruses is ineffective at producing sufficient, long-lasting local immunity in the elderly. Direct pulmonary delivery to the resident local pulmonary immune cells can create long-term mucosal responses. However, criteria for drug vehicle design rules that can overcome age-specific changes in immune cell functions have yet to be established.

Results

Here, in vivo charge-based nanoparticle (NP) uptake was compared in mice of two age groups (2- and 16-months) within the four notable pulmonary antigen presenting cell (APC) populations: alveolar macrophages (AM), interstitial macrophages (IM), CD103+ dendritic cells (DCs), and CD11b+ DCs. Both macrophage populations exhibited preferential uptake of anionic nanoparticles but showed inverse rates of phagocytosis between the AM and IM populations across age. DC populations demonstrated preferential uptake of cationic nanoparticles, which remarkably did not significantly change in the aged group. Further characterization of cell phenotypes post-NP internalization demonstrated unique surface marker expression and activation levels for each APC population, showcasing heightened DC inflammatory response to NP delivery in the aged group.

Conclusion

The age of mice demonstrated significant preferences in the charge-based NP uptake in APCs that differed greatly between macrophages and DCs. Carefully balance of the targeting and activation of specific types of pulmonary APCs will be critical to produce efficient, age-based vaccines for the growing elderly population.

Graphical Abstract
Identifying health and healthcare priorities in rural areas: A concept mapping study informed by consumers, health professionals and researchers
Authors: Wong Shee Anna , Donaldson Alex , Clapham Renee P. , Aitken John C. , Ananthapavan Jaithri , Ugalde Anna , Versace Vincent L. , Mc Namara Kevin
Published: August 2024

Background

It is vital that health service delivery and health interventions address patients’ needs or preferences, are relevant for practice and can be implemented. Involving those who will use or deliver healthcare in priority-setting can lead to health service delivery and research that is more meaningful and impactful. This is particularly crucial in rural communities, where limited resources and disparities in healthcare and health outcomes are often more pronounced. The aim of this study was to determine the health and healthcare priorities in rural communities using a region-wide community engagement approach.

Methods

This multi-methods study was conducted in five rural communities in the Grampians region, Western Victoria, Australia. It involved six concept mapping steps: (1) preparation, (2) generation (brainstorming statements and identifying rating criteria), (3) structuring statements (sorting and rating statements), (4) representation of statements, (5) interpretation of the concept map and (6) utilization. Community forums, surveys and stakeholder consultations with community members and health professionals were used in Step 2. An innovative online group concept mapping platform, involving consumers, health professionals and researchers was used in Step 3.

Results

Overall, 117 community members and 70 health professionals identified 400 health and healthcare issues. Six stakeholder consultation sessions (with 16 community members and 16 health professionals) identified three key values for prioritizing health issues: equal access for equal need, effectiveness and impact (number of people affected). Actionable priorities for healthcare delivery were largely related to access issues, such as the challenges navigating the healthcare system, particularly for people with mental health issues; the lack of sufficient general practitioners and other health providers; the high travel costs; and poor internet coverage often impacting technology-based interventions for people in rural areas.

Conclusions

This study identified actionable health and healthcare priorities from the perspective of healthcare service users and providers in rural communities in Western Victoria. Issues related to access, such as the inequities in healthcare costs, the perceived lack of quality and availability of services, particularly in mental health and disability, were identified as priorities. These insights can guide future research, policy-making and resource allocation efforts to improve healthcare access, quality and equity in rural communities.
LINC00460/miR-186-3p/MYC feedback loop facilitates colorectal cancer immune escape by enhancing CD47 and PD-L1 expressions
Authors: Luo Qingqing , Shen Fei , Zhao Sheng , Dong Lan , Wei Jianchang , Hu He , Huang Qing , Wang Qiang , Yang Ping , Liang Wenlong , Li Wanglin , He Feng , Cao Jie
Published: August 2024

Background

Long non-coding RNAs (LncRNAs) have been implicated as critical regulators of cancer tumorigenesis and progression. However, their functions and molecular mechanisms in colorectal cancer (CRC) still remain to be further elucidated.

Methods

LINC00460 was identified by differential analysis between human CRC and normal tissues and verified by in situ hybridization (ISH) and qRT-PCR. We investigated the biological functions of LINC00460 in CRC by in vitro and in vivo experiments. We predicted the mechanism and downstream functional molecules of LINC00460 by bioinformatics analysis, and confirmed them by dual luciferase reporter gene assay, RNA immunoprecipitation (RIP), RNA pull-down, etc.

Results

LINC00460 was found to be significantly overexpressed in CRC and associated with poor prognosis. Overexpression of LINC00460 promoted CRC cell immune escape and remodeled a suppressive tumor immune microenvironment, thereby promoting CRC proliferation and metastasis. Mechanistic studies showed that LINC00460 served as a molecular sponge for miR-186-3p, and then promoted the expressions of MYC, CD47 and PD-L1 to facilitate CRC cell immune escape. We also demonstrated that MYC upregulated LINC00460 expression at the transcriptional level and formed a positive feedback loop.

Conclusions

The LINC00460/miR-186-3p/MYC feedback loop promotes CRC cell immune escape and subsequently facilitates CRC proliferation and metastasis. Our findings provide novel insight into LINC00460 as a CRC immune regulator, and provide a potential therapeutic target for CRC patients.
Humans seropositive for Trypanosoma cruzi co-infected with intestinal helminths have higher infectiousness, parasitaemia and Th2-type response in the Argentine Chaco
Authors: Enriquez Gustavo Fabián , Macchiaverna Natalia Paula , Garbossa Graciela , Quebrada Palacio Luz Piedad , Ojeda Bárbara Leonor , Bua Jacqueline , Gaspe María Sol , Cimino Rubén , Gürtler Ricardo Esteban , Postan Miriam , Cardinal Marta Victoria
Published: August 2024

Background

The Gran Chaco ecoregion is a well-known hotspot of several neglected tropical diseases (NTDs) including Chagas disease, soil-transmitted helminthiasis and multiparasitic infections. Interspecific interactions between parasite species can modify host susceptibility, pathogenesis and transmissibility through immunomodulation. Our objective was to test the association between human co-infection with intestinal parasites and host parasitaemia, infectiousness to the vector and immunological profiles in Trypanosoma cruzi-seropositive individuals residing in an endemic region of the Argentine Chaco.

Methods

We conducted a cross-sectional serological survey for T. cruzi infection along with an intestinal parasite survey in two adjacent rural villages. Each participant was tested for T. cruzi and Strongyloides stercoralis infection by serodiagnosis, and by coprological tests for intestinal parasite detection. Trypanosoma cruzi bloodstream parasite load was determined by quantitative PCR (qPCR), host infectiousness by artificial xenodiagnosis and serum human cytokine levels by flow cytometry.

Results

The seroprevalence for T. cruzi was 16.1% and for S. stercoralis 11.5% (n = 87). We found 25.3% of patients with Enterobius vermicularis. The most frequent protozoan parasites were Blastocystis spp. (39.1%), Giardia lamblia (6.9%) and Cryptosporidium spp. (3.4%). Multiparasitism occurred in 36.8% of the examined patients. Co-infection ranged from 6.9% to 8.1% for T. cruzi-seropositive humans simultaneously infected with at least one protozoan or helminth species, respectively. The relative odds of being positive by qPCR or xenodiagnosis (i.e. infectious) of 28 T. cruzi-seropositive patients was eight times higher in people co-infected with at least one helminth species than in patients with no such co-infection. Trypanosoma cruzi parasite load and host infectiousness were positively associated with helminth co-infection in a multiple regression analysis. Interferon-gamma (IFN-γ) response, measured in relation to interleukin (IL)-4 among humans infected with T. cruzi only, was 1.5-fold higher than for T. cruzi-seropositive patients co-infected with helminths. The median concentration of IL-4 was significantly higher in T. cruzi-seropositive patients with a positive qPCR test than in qPCR-negative patients.

Conclusions

Our results show a high level of multiparasitism and suggest that co-infection with intestinal helminths increased T. cruzi parasitaemia and upregulated the Th2-type response in the study patients.

Graphical Abstract
Sampling of Culicoides with nontraditional methods provides unusual species composition and new records for southern Spain
Authors: González Mikel Alexander , Magallanes Sergio , Bravo-Barriga Daniel , Monteys Victor Sarto i , Martínez-de la Puente Josué , Figuerola Jordi
Published: August 2024

Background

Culicoides midges have been well-studied in Spain, particularly over the last 20 years, mainly because of their role as vectors of arboviral diseases that affect livestock. Most studies on Culicoides are conducted using suction light traps in farmed environments, but studies employing alternative trapping techniques or focusing on natural habitats are scarce.

Methods

In the present study, we analyze Culicoides captured in 2023 at 476 sites in western Andalusia (southern Spain) using carbon dioxide-baited Biogents (BG)-sentinel traps across different ecosystems.

Results

We collected 3,084 Culicoides midges (3060 females and 24 males) belonging to 23 species, including the new species Culicoides grandifovea sp. nov. and the first record of Culicoides pseudolangeroni for Europe. Both species were described with morphological and molecular methods and detailed data on spatial distribution was also recorded. The new species showed close phylogenetic relations with sequences from an unidentified Culicoides from Morocco (92.6% similarity) and with Culicoides kurensis. Culicoides imicola was the most abundant species (17.4%), followed by Culicoides grandifovea sp. nov. (14.6%) and Culicoides kurensis (11.9%). Interestingly, Culicoides montanus was the only species of the obsoletus and pulicaris species complexes captured, representing the first record of this species in southern Spain. A total of 53 valid Culicoides species have been reported in the area, with 48 already reported in literature records and 5 more added in the present study. Information on the flight period for the most common Culicoides species is also provided.

Conclusions

To the best of our knowledge, our study represents the most comprehensive effort ever done on nonfarmland habitats using carbon-dioxide baited suction traps for collecting Culicoides. Our data suggests that using carbon dioxide traps offers a completely different perspective on Culicoides communities compared with routinely used light traps, including the discovery of previously unrecorded species.

Graphical Abstract
Rib myelolipoma: a case report
Authors: Amate Neto André , Preto Felipe Ramos Camargo , de Moraes Amanda Tollini , Salomão Sarah Lopes , Frederigue Thiago Barreto , de Nadai Mariane Nunes , Santos Marcel Koenigkam , de Nadai Tales Rubens
Published: August 2024

Background

Myelolipoma is an uncommon benign tumor composed of mature adipose tissue and hematopoietic elements. These tumors generally affect the adrenal glands, with anomalous presentations being rare and with few cases described in the literature. Most myelolipomas are asymptomatic and discovered incidentally, either through imaging tests or at autopsies. However, depending on the location and size of the lesion, myelolipomas can cause symptoms of mass effect. This article aims to report a very rare presentation of a symptomatic primary myelolipoma affecting the ribs.

Case presentation

A 21-year-old white female patient presented with a complaint of burning chest pain over 3 months, with gradual worsening in intensity, accompanied by a progressively growing bulge in the right thoracic wall. The patient underwent thoracotomy of the fifth and sixth ribs with complete excision of the lesion with a safety margin. Thoracic wall reconstruction was performed using a polypropylene mesh. The patient had a good postoperative course and was discharged on postoperative day 3. Histopathological examination revealed a histological image consistent with myelolipoma.

Conclusions

This report underscores the importance of considering a myelolipoma diagnosis for tumor masses in the ribs.
Perpetrator characteristics and firearm use in pediatric homicides: Supplementary Homicide Reports - United States, 1976 to 2020
Authors: Berg Mark T. , Rogers Ethan M. , Rochford Hannah
Published: August 2024

Background

Describe trends in perpetrator characteristics and firearm use in pediatric homicides across the United States.

Methods

Multiply-imputed data from the Federal Bureau of Investigation’s 1976–2020 Supplementary Homicide Reports were used to estimate perpetrator characteristics (sex, age, and relationship to victim) and firearm use in pediatric homicides. Descriptive analyses were stratified by victim age group, sex, race, and five-year time periods.

Results

Family members were the most common perpetrator of infant and toddler (ages 0–4) and child (ages 5–12) homicides, whereas acquaintances accounted for the majority of adolescent (ages 13–19) homicides. Perpetrator characteristics vary across victim sex and race, particularly among adolescents. Despite overall stability, there were changes in perpetrator characteristics from 1976 to 2020. There was a sustained increase in the proportion of homicides committed with a firearm. In 2016–2020, the proportion of firearm-involved homicides was an all-time high for infant and toddler (14.8%), child (53.1%), and adolescent victims (88.5%).

Conclusions

Policy interventions that improve family stability and well-being may be most effective at preventing infant, toddler, and child homicides, whereas programs that target peer and community relationships, as well as policies that focus on firearm access, may be more crucial for preventing adolescent homicides.
Sustainable polymer reclamation: recycling poly(ethylene terephthalate) glycol (PETG) for 3D printing applications
Authors: Seno Flores João Daniel , de Assis Augusto Thiago , Lopes Vieira Cunha Daniel Aparecido , Gonçalves Beatrice Cesar Augusto , Henrique Backes Eduardo , Costa Lidiane Cristina
Published: August 2024

Due to their versatile properties and wide-ranging applications across various industries, including manufacturing, polymers are indispensable for today’s society. However, polymer-based products significantly impact the environment since many are single-used plastics and require a long time to degrade naturally. A method to attenuate end-of-life polymers’ ill effects is recycling them to bring them again into the production cycle, from grave to cradle. This investigation involves recycling PETG sheets used in face shield production during the COVID-19 outbreak to fabricate 3D printing filaments for FFF. We assessed poly(ethylene terephthalate) glycol (PETG) processability to up to five recycling cycles and obtained filaments with properties adequate for 3D printing. Rheological, thermal, morphological, and mechanical characterization were analyzed to verify the effect of the number of processing cycles on the properties of the polymer. The recycling cycles originated a decrease in viscosity and elasticity, and the gain in molecular mobility resulted, relatively, in solids with a higher degree of crystallinity and prints with more elliptical depositions. The mechanical properties of printed parts fabricated of recycled material were comparable to those from commercial filament, especially after three extrusion cycles. Both extrusion and additive manufacturing processes successfully recycle material into filaments and printed parts, indicating that the proposed methodology is a promising alternative to bring value back to polymers from solid waste.
Comparison between the diagnostic utility of three-dimensional fluid attenuated inversion recovery (3D FLAIR) and three dimensional double inversion recovery (3D DIR) magnetic resonance sequences in the assessment of overall load of multiple sclerosis lesions in the brain
Authors: Saad Nehal S. , Gad Azza A. , Elzoghby Mahmoud M. , Ibrahim Heba R.
Published: August 2024

Background

Multiple sclerosis (MS) is a complex CNS demyelinating disease. Assessment of MS plaques in specific anatomic locations in the brain was challenging to detect by conventional MRI sequences. So, this study aimed to compare the diagnostic accuracy of 3D FLAIR (Fluid attenuation inversion recovery), or 3D DIR (Double inversion recovery) sequences to conventional 2D FLAIR and T2 sequences in detecting MS plaques in different anatomic sites, as well as counting the total lesion burden.

Methods

A comparative cross-sectional study enrolled 30 MS patients on the basis of McDonald’s criteria 2017. All participants underwent a brain MRI study including 3D FLAIR or 3D DIR sequences, conventional 2D FLAIR, and T2 sequences.

Results

No statistically significant difference between the 3D DIR and 3D FLAIR in total lesion (plaque) burden results; however, when each is compared to the conventional ones, both are superior. 3D FLAIR detected the most significant number of plaques in the periventricular region, followed by 2D FLAIR and T2W sequences, with 3D DIR being the least accurate in this region. Meanwhile, 3D DIR was the most precise and can detect a statistically significant number of cortical plaques compared to the 3D FLAIR and the conventional sequences. No statistically significant results on which sequence is best in regard to infratentorial plaque detection.

Conclusion

3D FLAIR and 3D DIR were superior to 2D FLAIR and T2 sequences in detecting overall lesion burden in MS. Moreover, the 3D DIR sequence was the most precise in the detection of the cortical plaques.
Machine learning-based noninvasive diagnostic classifiers for the prediction of cancer tissue of origin using serum microRNAs.
Authors: Zhang Andrew , Rui Hallgeir , Hu Hai
Published: August 2024

101

Background: Noninvasive multi-cancer early detection (MCED) with or without tissue of origin (TOO) has the potential to reduce cancer-related mortality by analyzing circulating cell-free nucleic acids and/or proteins in blood. Accurate prediction of TOO following a positive MCED test would guide selection of confirmatory tests, thereby expediting the definitive diagnosis and prompt initiation of the most appropriate treatment, tailored to the specific cancer type. Here, we report the development of machine learning-based diagnostic classifiers that predict TOO for 13 cancer types with high accuracy using serum microRNAs. Methods: Eight serum miRNA microarray datasets from GEO totaling 6,283 patients across 13 cancer types were used in this study. The patients were split, with an approximate 3:2 ratio, into a training (n=3,844) and a validation set (n=2,439). An ensemble of classifiers was constructed in the training set via the “one vs. rest” approach, thus one classifier for each cancer type. Random forest models with recursive feature elimination (RFE) selected the optimal set of miRNAs that was fed into support vector machine models to generate a prediction probability for each cancer type. The type with the highest probability was considered the predicted cancer type. The performance of these classifiers was evaluated in the validation set in two steps with the 1st using all cancer types and the 2nd using the top 2 or 3 cancer types from the 1st step to achieve a refined prediction. Results: RFE selected 426 miRNAs for building the 13 classification models. In the validation set comprising 2,439 patients across 12 cancer types, the classifiers correctly predicted cancer types for 1,922 (79%) samples based on the highest prediction probability. The accuracy increased to 92% and 95% based on top 2 and 3 predictions. In particular, based on top 3 predictions, the accuracy was >95% for bladder, breast, prostate, gastric, glioma and lung cancers, >85% for ovarian, liver and esophageal cancers, 78% for pancreatic cancer and sarcoma, and 67% for colorectal cancer. Conclusions: With 95% accuracy in narrowing TOO down to 3 organ sites, the miRNA-based TOO classifiers could be used clinically as a reflex test for the simple and highly accurate MCED screening models previously developed ( Cancers 2022,14:1450; ESMO 2024). Together, they support the development of an inexpensive, accurate and noninvasive blood test for MCED with TOO.
Real-world insights from comprehensive genomic profiling across multiple cancer types.
Authors: Hung Ling-Jen , Huang Chen-Yang , Chen Jen-Shi , Huang Wen-Kuan , Hsu Chih-Chung , Fang Yueh-Fu , Wang Chih-Liang , Liu Ping-Chi , Yeh Kun-Yun , Chang Pei-Hung , Chang John Wen-Cheng , Lin Yung-Chang , Huang Shiu-Feng , Chou Wen-Chi
Published: August 2024

106

Background: This retrospective study was conducted to analyze tumor tissue profiling data to assess the potential of applying comprehensive genomic profiling (CGP) in patient care across diverse solid tumors. Methods: Patients with newly diagnosed or recurrent stage IIIB or IV lung adenocarcinoma with the null immunophenotype, esophageal, gastric, pancreatic, or bile duct cancer between January 2020 and July 2023 at two medical centers in Taiwan were included in the National Biobank Consortium of Taiwan project. The tumor samples were subjected to CGP using FoundationOneCDx, with therapeutic implications determined using OncoKB classification. Results: FoundationOneCDx testing of 574 patients was successful in 456 (79.4%) patients. Clinically actionable genomic alterations were detected in 21.1% (96/456) of the patients, including 17.5%, 2.9%, and 0.7% of patients at evidence levels 1, 2, and 3, respectively. Lung adenocarcinoma accounted for the largest proportion of samples with at least one actionable gene alteration (63.2%), followed by bile duct (26.9%), gastric (17.6%), esophageal (4.0%), and pancreatic (3.1%) cancer. Based on the CGP results, 43 patients (9.4%) received matched targeted therapy. The median overall survival of patients who received matched therapy or not was 26.1 months (95% confidence interval (CI), 16.7–35.5 months) and 10.6 months (95% CI, 8.1–13.1 months; hazard ratio, 0.28, 95% CI, 0.14–0.55, p < 0.001), respectively. Conclusions: This study provides comprehensive insights into genomic profiling across diverse cancers in Taiwan, highlighting the crucial role of CGP in identifying actionable genomic alterations and guiding effective therapeutic strategies in real-world practice.
Molecular tumor board: Real-world experience in a tertiary cancer centre in Singapore.
Authors: Ang Su Fen , Tan Daniel Shao-Weng
Published: August 2024

107

Background: Genomic profiling is increasingly employed to support diagnosis and treatment of cancer. Our Molecular tumor boards (MTBs) serves as a collaborative platform for a multi-disciplinary team of oncologists, pathologists, scientists, bioinformaticians, genetic counsellors and research coordinators to discuss and match patients to the most relevant therapies and/or clinical trials. We report here the evaluation of our MTBs for year 2023 with the aim of identifying challenges and opportunities for successful implementation of precision oncology. Methods: Regular monthly MTBs were conducted to discuss molecular profiles from predominantly advanced-stage patients enrolled to the IMPACT study (Individualized Molecular Profiling for Allocation to Clinical Trials NCT02806388). Next-generation sequencing was performed either in-house using Oncomine or commercial FoundationOne panels. Additional tests such as whole transcriptome sequencing (WTS), immunohistochemistry (IHC) and fluorescent in-situ hybridization (FISH) were also performed where indicated. MTB recommendations were documented for follow-up and analysis. Results: A total of 102 out of 611 profiled patients were discussed in MTBs in 2023, with an average of 8.6 patients per month. Top 3 cancer types were gastrointestinal (32%), breast (18%) and lung (18%). 65/102 (63.7%) cases had MTB recommendations, of which 21 (20.6%) had multiple recommendations. Overall uptake rate for recommendations was 23.8% (29/122). Conclusions: MTB plays an important role in identifying therapeutic opportunities by factoring in patient variables, available data and physician experience while at the same time provides an avenue for further investigation to gather cumulative evidence. Frequent reasons encountered for not adopting the recommendations include: (1) insufficient sample to proceed with further investigations, (2) limited access to off-label treatments, and (3) additional considerations to participate in clinical trials. To fully realize the value of MTB, we will focus on (1) defining the molecular tests for efficient profiling, (2) crafting a route for special access to treatments and (3) increasing awareness and understanding of clinical trials. [Table: see text]
Patient reported outcome measures at a large district general hospital post-mastectomy and implant based reconstruction.
Authors: Fraser Danny
Published: August 2024

11

Background: Breast reconstruction surgery for cancer can be a debilitating and life changing experience for patients, with complex affects on physical and mental health throughout the rehabilitation journey. We conduct a study on a cohort of patients undergoing this procedure, with focus on patient reported outcome measures. Methods: We reviewed all patients who underwent breast reconstruction surgery at our hospital from 2017 to 20223. Demographic, diagnosis, pre- and post-operative adjuvant treatment, and implant characteristics were collected. Psychosocial well being, physical wellbeing, satisfaction with breasts scales of the BREAST-Q were used. Independent t-test was conducted to find differences between PROMs for each group, and linear regression of age and implant size on each score. Results: 69 patients were contacted and 39 PROMS collected. The average age of patients was 57.6 years old. 40% were previous or current smokers and 40.8% had BMI>30. 29 had pre-pectoral placement and 40 sub-pectoral. 17 had smooth implants and 52 textured. The average size of implant was 330mm. Immediate reconstruction was associated with a lower psychosocial score (66.0vs86.9, p=0.02) compared to multi-stage implants. Sub pectoral placement was associated with a higher (75.7vs61.9 p=0.046) psychosocial score than pre pectoral placement. Textured surface was associated with lower physical score than smooth surface (34.7vs50.2 P=0.046). On linear regression, age was positively associated (p=0.007) with psychosocial score. Conclusions: These findings underscore the importance of personalized approaches in surgery, considering implant type, placement technique, and patient age. Surgeons should prioritize patient preferences and needs to optimize post-surgical satisfaction and well-being.
Avelumab plus axitinib for first-line treatment of advanced renal cell carcinoma: A real-world ambispective RAVE-Renal study.
Authors: Chubenko Viacheslav , Baklanova Olga , Kalpinskiy Alexey , Safina Sufiia , Lebedinets Andrey , Shkurat Alexey , Parsadanova Elvira , Turganova Maria , Petkau Vladislav , Tovbik Natalya , Tkacheva Elena , Anzhiganova Yulia , Novikova Olga , Bragina Varvara , Zukov Ruslan , Tsimafeyeu Ilya
Published: August 2024

117

Background: In a phase 3 JAVELIN Renal 101randomized study, the combination of avelumab and axitinib demonstrated a significant improvement in progression-free survival (PFS; median 13.9 months) and objective response rate (ORR; 59.3%) among patients with metastatic clear-cell renal cell carcinoma (mRCC), leading to FDA approval as a first-line therapy. In our ambispective observational RAVE-Renal study, real-world data were gathered to assess the practical application and outcomes associated with the use of avelumab and axitinib in clinical settings. Methods: Patients were recruited from 13 sites, with data collected anonymously online. Key inclusion criteria were untreated mRCC and a minimum age of 18 years. Safety and efficacy assessments were conducted in all patients who received at least one dose of avelumab and axitinib. The primary endpoints included ORR and PFS, while secondary endpoints encompassed overall survival (OS) and the incidence of treatment-related adverse events (TRAEs). Results: At the time of data cutoff (February 03, 2024), a total of 125 patients were enrolled and treated. Median age was 61 years (range, 37-74). Patients were predominantly men (74.3%), previously nephrectomised (81.4%), had 2 and more metastatic sites (77.1%) including bone (24.3%), liver (15.7%), and brain (3%) metastases. IMDC risk was evaluated in 102 patients. Among these patients, 36 (35.3%) were categorized as having favorable risk, 50 (49%) as intermediate risk, and 16 (15.7%) as poor risk. The median number of avelumab infusions was 7 (range, 1-29). Table summarizes efficacy and safety data. Conclusions: The real-world study of first-line avelumab and axitinib therapy reveals comparable ORR and PFS to those observed in the pivotal clinical trial among patients with mRCC. The combination was well tolerated. Further follow-up of patients in the study is ongoing. Clinical trial information: KCRB01012022 . [Table: see text]
Utility of PET-CT for assessment of response to neo-adjuvant chemotherapy in breast cancer.
Authors: Valiyaveettil Deepthi , Malik Monica
Published: August 2024

12

Background: Response to neo-adjuvant chemotherapy (NACT) is associated with prognosis in non-metastatic breast cancer and can potentially inform further therapeutic options. The aim of this study was to correlate post NACT response on PET CT with pathological response. Methods: All patients who underwent pre- NACT (baseline) and post NACT PET CT imaging with F-18 FDG in a dose of 5-7 MBq/kg body weight with a minimum of 185 MBq given intravenously were retrospectively analyzed. Scan was performed on GE Discovery 710 whole-body PET scan with 128 slice CT. Relevant clinical and imaging related details were extracted from the treatment records. Post NACT PET response (PERCIST criteria) in the primary tumor and nodes was correlated with the pathological response on the post surgical specimen. Analysis was done using Microsoft Excel and SPSS v20 (IBM SPSS). Results: The median age was 49 years (range 30-76 years). 83.1% of patients had node positive disease on baseline PET imaging (not pathologically confirmed). Post chemotherapy PET showed complete metabolic response in the primary tumor and regional nodes in 56.3% and 74% of patients respectively. Two patients had progressive local disease. Pathological complete response rates post surgery in triple negative, Her2 neu positive and ER positive group was 50%, 34% and 12% respectively. The sensitivity, specificity, positive predictive value and negative predictive value is tabulated below. Conclusions: Overall FDG PET CT showed good specificity with limited sensitivity for post NACT response assessment in breast cancer. Our results suggest that post NACT PET CT may have limited utility for clinical decision making and at present its use cannot be recommended outside of a clinical trial.[Table: see text]