bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recovery of organ-specific tissue oxygen delivery at restrictive transfusion thresholds after fluid treatment in ovine haemorrhagic shock
Authors: Dyer Wayne B. , Simonova Gabriela , Chiaretti Sara , Bouquet Mahe , Wellburn Rebecca , Heinsar Silver , Ainola Carmen , Wildi Karin , Sato Kei , Livingstone Samantha , Suen Jacky Y. , Irving David O. , Tung John-Paul , li Bassi Gianluigi , Fraser John F. 
Published: April 2022

Abstract
Background
Fluid resuscitation is the standard treatment to restore circulating blood volume and pressure after massive haemorrhage and shock. Packed red blood cells (PRBC) are transfused to restore haemoglobin levels. Restoration of microcirculatory flow and tissue oxygen delivery is critical for organ and patient survival, but these parameters are infrequently measured. Patient Blood Management is a multidisciplinary approach to manage and conserve a patient’s own blood, directing treatment options based on broad clinical assessment beyond haemoglobin alone, for which tissue perfusion and oxygenation could be useful. Our aim was to assess utility of non-invasive tissue-specific measures to compare PRBC transfusion with novel crystalloid treatments for haemorrhagic shock.

Methods
A model of severe haemorrhagic shock was developed in an intensive care setting, with controlled haemorrhage in sheep according to pressure (mean arterial pressure 30–40 mmHg) and oxygen debt (lactate > 4 mM) targets. We compared PRBC transfusion to fluid resuscitation with either PlasmaLyte or a novel crystalloid. Efficacy was assessed according to recovery of haemodynamic parameters and non-invasive measures of sublingual microcirculatory flow, regional tissue oxygen saturation, repayment of oxygen debt (arterial lactate), and a panel of inflammatory and organ function markers. Invasive measurements of tissue perfusion, oxygen tension and lactate levels were performed in brain, kidney, liver, and skeletal muscle. Outcomes were assessed during 4 h treatment and post-mortem, and analysed by one- and two-way ANOVA.

Results
Each treatment restored haemodynamic and tissue oxygen delivery parameters equivalently (p > 0.05), despite haemodilution after crystalloid infusion to haemoglobin concentrations below 70 g/L (p < 0.001). Recovery of vital organ-specific perfusion and oxygen tension commenced shortly before non-invasive measures improved. Lactate declined in all tissues and correlated with arterial lactate levels (p < 0.0001). The novel crystalloid supported rapid peripheral vasodilation (p = 0.014) and tended to achieve tissue oxygen delivery targets earlier. PRBC supported earlier renal oxygen delivery (p = 0.012) but delayed peripheral perfusion (p = 0.034).

Conclusions
Crystalloids supported vital organ oxygen delivery after massive haemorrhage, despite haemodilution to < 70 g/L, confirming that restrictive transfusion thresholds are appropriate to support oxygen delivery. Non-invasive tissue perfusion and oximetry technologies merit further clinical appraisal to guide treatment for massive haemorrhage in the context of Patient Blood Management.
Investigation of enzymatic hydrolysis kinetics of soy protein isolate: laboratory and semi-industrial scale
Authors: Pozdnyakov Nikita , Shilov Sergey , Lukin Alexander , Bolshakov Maxim , Sogorin Evgeny 
Published: April 2022

AbstractUsing parameters of optimal conditions from laboratory experiments often results in the loss of significant time and resources when trying to scale up the process. In this study, the comparison of results of laboratory and semi-industrial experiments of enzymatic hydrolysis of soy protein isolate is considered. The kinetics of peptides accumulation was investigated by colorimetric method in both microtube (volume reaction is 0.7 ml, 7.14 mg/ml of substrate, incubation in solid state thermostat) and industrial homogenizer (volume reaction is 4,000 ml, 100 mg/ml of substrate, rotor–stator type mixer). The enzyme preparation Protosubtilin G3x (main component is subtilisin) was used as an analogue of the Alcalase preparation, which is already widely used in the food industry. It was found that the pH and the number of proteolytic units in the reaction mixture of both scales had slightly different results of the kinetics, while the temperature showed significantly one. The laboratory scale of the reaction had a wide range of optimal temperature (40–60 $$^{\circ }$$

∘

C, 30 $$^{\circ }$$

∘

C showed slowest rate of kinetics reaction), whereas the semi-industrial scale had 50 $$^{\circ }$$

∘

C of optimal temperature (30, 40, 60 $$^{\circ }$$

∘

C had the same kinetics). It also was found that maintaining the pH value of the reaction mixture was not mandatory. The obtained results indicate the need to refine the process conditions using semi-industrial experiments before attracting industrial-scale resources. In the case of selection of conditions for the hydrolysis of soy protein isolate in production, it is necessary first of all to take into account the reaction temperature as the most irreproducible parameter when scaling.
Graphical Abstract
Directed evolution driving the generation of an efficient keratinase variant to facilitate the feather degradation
Authors: Zhang Jing , Su Chang , Kong Xiao-Li , Gong Jin-Song , Liu Yan-Lin , Li Heng , Qin Jiufu , Xu Zheng-Hong , Shi Jin-Song 
Published: April 2022

AbstractKeratinases can specifically degrade keratins, which widely exist in hair, horns, claws and human skin. There is a great interest in developing keratinase to manage keratin waste generated by the poultry industry and reusing keratin products in agriculture, medical treatment and feed industries. Degradation of keratin waste by keratinase is more environmentally friendly and more sustainable compared with chemical and physical methods. However, the wild-type keratinase-producing strains usually cannot meet the requirements of industrial production, and some are pathogenic, limiting their development and utilization. The main purpose of this study is to improve the catalytic performance of keratinase via directed evolution technology for the degradation of feathers. We first constructed a mutant library through error-prone PCR and screened variants with enhanced enzyme activity. The keratinase activity was further improved through fermentation conditions optimization and fed-batch strategies in a 7-L bioreactor. As a result, nine mutants with enhanced activity were identified and the highest enzyme activity was improved from 1150 to 8448 U/mL finally. The mutant achieved efficient biodegradation of feathers, increasing the degradation rate from 49 to 88%. Moreover, a large number of amino acids and soluble peptides were obtained as degradation products, which were excellent protein resources to feed. Therefore, the study provided a keratinase mutant with application potential in the management of feather waste and preparation of protein feed additive.
Graphical Abstract
Identification and characterization of immunomodulatory peptides from pepsin–soy protein hydrolysates
Authors: Hsieh Lu-Sheng , Lu Ming-Shing , Chiang Wen-Dee 
Published: April 2022

AbstractTo obtain immunomodulatory peptides from isolated soy protein (ISP), pepsin was selected to prepare hydrolysates and 4-h treatment (Pepsin-ISPH4h) showed the highest yield and immunomodulatory activities. The Pepsin-ISPH4h was sequentially fractionated by 30, 10 and 1-kDa molecular weight cut-off (MWCO) membranes, in which 1-kDa MWCO permeate (1P) exhibited the most significant enhancement of phagocytosis activity without causing excessive inflammation as compared with Pepsin-ISPH4h. To further purify and enhance the immunomodulatory activity, 1P was distinct by high-performance liquid chromatography equipped with a reverse-phase column and in vivo immunomodulatory activity of fractions was examined in mice. Fraction 1 (F1) significantly elevated phagocytosis activity of mice spleen macrophages and neutrophils. However, increase of phagocytosis activity did not result from the induction of macrophages M1 or M2 polarization. The immunomodulatory peptide sequence, EKPQQQSSRRGS, from F1 was identified by LC–MS/MS. Phagocytosis activity and macrophage M1 polarization were elevated by synthetic peptide treatment. Hence, our results indicated that isolated soy protein hydrolysates prepared by pepsin could provide a source of peptides with immunomodulatory effects.
Graphical Abstract
Cytochrome C catalyzed oxygen tolerant atom-transfer radical polymerization
Authors: Xie Peng-Cheng , Guo Xue-Qing , Yang Fu-Qiao , Xu Nuo , Chen Yuan-Yuan , Wang Xing-Qiang , Wang Hongcheng , Yong Yang-Chun 
Published: April 2022

AbstractAtom-transfer radical polymerization (ATRP) is a well-known technique for controlled polymer synthesis. However, the ATRP usually employed toxic heavy metal ionas as the catalyst and was susceptible to molecular oxygen, which made it should be conducted under strictly anoxic condition. Conducting ATRP under ambient and biocompatible conditions is the major challenge. In this study, cytochrome C was explored as an efficient biocatalyst for ATRP under biocompatible conditions. The cytochrome C catalyzed ATRP showed a relatively low polymer dispersity index of 1.19. More interestingly, the cytochrome C catalyzed ATRP showed superior oxygen resistance as it could be performed under aerobic conditions with high dissolved oxygen level. Further analysis suggested that the Fe(II) embed in the cytochrome C might serve as the catalytic center and methyl radical was responsible for the ATRP catalysis. This work explored new biocompatible catalyst for aerobic ATRP, which might open new dimension for practical ATRP and application of cytochrome C protein.
Graphical Abstract
Dynamic contrast-enhanced MRI radiomics nomogram for predicting axillary lymph node metastasis in breast cancer
Authors: Song Deling , Yang Fei , Zhang Yujiao , Guo Yazhe , Qu Yingwu , Zhang Xiaochen , Zhu Yuexiang , Cui Shujun 
Published: April 2022

Abstract
Purpose
The goal of this study is to develop and validate a radiomics nomogram integrating the radiomics features from DCE-MRI and clinical factors for the preoperative diagnosis of axillary lymph node (ALN) metastasis in breast cancer patients.

Procedures
A total of 432 patients with breast cancer were enrolled in this retrospective study and divided into a training cohort (n = 296) and a validation cohort (n = 136). Radiomics features were extracted from the second phase of dynamic contrast enhanced (DCE) MRI images. The least absolute shrinkage and selection operator (LASSO) regression method was used to screen optimal features and construct a radiomics signature in the training cohort. Multivariable logistic regression analysis was used to establish a radiomics nomogram model based on the radiomics signature and clinical factors. The predictive performance of the nomogram was quantified with respect to discrimination and calibration, which was further evaluated in the independent validation cohort.

Results
Fourteen ALN metastasis-related features were selected to construct the radiomics signature, with an area under the curve (AUC) of 0.847 and 0.805 in the training and validation cohorts, respectively. The nomogram was established by incorporating the histological grade, multifocality, MRI report lymph node status and radiomics signature and showed good calibration and excellent performance for ALN detection (AUC of 0.907 and 0.874 in the training and validation cohorts, respectively). The decision curve, which demonstrated the radiomics nomogram, displayed promising clinical utility.

Conclusions
The radiomics nomogram can be used as a noninvasive and reliable tool to assist clinicians in accurately predicting ALN metastasis in breast cancer preoperatively.
Hybrid kernelised expectation maximisation for Bremsstrahlung SPECT reconstruction in SIRT with 90Y micro-spheres
Authors: Deidda Daniel , Denis-Bacelar Ana M. , Fenwick Andrew J. , Ferreira Kelley M. , Heetun Warda , Hutton Brian F. , Robinson Andrew P. , Scuffham James , Thielemans Kris 
Published: April 2022

AbstractBackgroundSelective internal radiation therapy with Yttrium-90 microspheres is an effective therapy for liver cancer and liver metastases. Yttrium-90 is mainly a high-energy beta particle emitter. These beta particles emit Bremsstrahlung radiation during their interaction with tissue making post-therapy imaging of the radioactivity distribution feasible. Nevertheless, image quality and quantification is difficult due to the continuous energy spectrum which makes resolution modelling, attenuation and scatter estimation challenging and therefore the dosimetry quantification is inaccurate. As a consequence a reconstruction algorithm able to improve resolution could be beneficial.MethodsIn this study, the hybrid kernelised expectation maximisation (HKEM) is used to improve resolution and contrast and reduce noise, in addition a modified HKEM called frozen HKEM (FHKEM) is investigated to further reduce noise. The iterative part of the FHKEM kernel was frozen at the 72nd sub-iteration. When using ordered subsets algorithms the data is divided in smaller subsets and the smallest algorithm iterative step is called sub-iteration. A NEMA phantom with spherical inserts was used for the optimisation and validation of the algorithm, and data from 5 patients treated with Selective internal radiation therapy were used as proof of clinical relevance of the method.ResultsThe results suggest a maximum improvement of 56% for region of interest mean recovery coefficient at fixed coefficient of variation and better identification of the hot volumes in the NEMA phantom. Similar improvements were achieved with patient data, showing 47% mean value improvement over the gold standard used in hospitals.ConclusionsSuch quantitative improvements could facilitate improved dosimetry calculations with SPECT when treating patients with Selective internal radiation therapy, as well as provide a more visible position of the cancerous lesions in the liver.
A community-based survey to assess risk for one health challenges in rural Philippines using a mobile application
Authors: Kim Tae Youn , Baldrias Loinda , Papageorgiou Sophia , Aguilar Edna , Tee Michael , Kelly Terra , Hill Jim , Wilkes Michael 
Published: April 2022

Abstract
Background
Recent emerging and re-emerging diseases in animals and humans show the vulnerability of humans, animals, and crops to disease outbreaks and the large potential impact on health, food security, and economies worldwide. A technology-enabled One Health (OH) surveillance program offers an opportunity for early detection and response as well as prevention of disease outbreaks in resource-limited settings. As an initial step toward developing the surveillance program, we aimed to identify at-risk groups of households for potential shared health challenges at the human-animal-environmental interface in a rural community of the Philippines.

Methods
A cross-sectional household survey was conducted in the municipality of Los Baños in proximity (63 kilometers south) to Metro Manila by enumerators living in the same community. Twenty-four enumerators conducted household interviews asking a) household characteristics including ownership of animals and crops; b) awareness, beliefs and knowledge about OH; c) family-level health practices related to sanitation, hygiene, and food safety; and d) risk factors for potential OH issues. All data collection and transferring process were streamlined using a mobile application.

Results
Of 6,055 participating households, 68% reported having one or more of gardens, farms, and animals for various reasons. While only 2% of the households have heard about OH, 97% believed they can get disease from animals, plants or the environment. A latent class analysis with nine risk factors for potential OH issues suggested that 46% of the households were at moderate to high risk for exposure to zoonotic pathogens and environmental contaminants.

Conclusion
Our findings indicate that there are unaddressed threats to human, animal, and plant health. Given the importance of the interconnections between the health of humans, animals, and plants, further evaluations of the at-risk households would be necessary to mitigate potential shared health threats in the community. Further, our study demonstrates that mHealth technology can provide an opportunity to systematically assess potential one health problems in the rural communities with limited internet connection.
Student interest, concerns, and information-seeking behaviors related to COVID-19
Authors: Elsner Jamie N. , Sadler Troy D. , Zangori Laura , Friedrichsen Patricia J. , Ke Li 
Published: April 2022

AbstractCOVID-19 creates an opportunity for science classrooms to relate content about viruses to students’ personal experiences with the pandemic. Previous researchers have shown that students are interested in crisis situations like disease outbreaks; however, they primarily acquire information about these events through internet sources which are often biased. We argue that it is important to understand student interest, concerns, and information-seeking behaviors related to COVID-19 to support science classroom learning and engagement about the virus and other potential outbreaks. We surveyed 224 high school students and analyzed their responses to six open-ended questions. We found that students expressed the most interest in topics related to the origin of COVID-19 and vaccines. Their greatest concerns included contracting the virus or someone they know contracting the virus and vaccine distribution. Of our sample, only 6.7% reported using their teachers as their source of COVID-19 information. Science classrooms have the potential to pique students’ situational interest by discussing COVID-19 topics that are important to students, which can increase their academic performance, content knowledge, attention, and engagement in learning about viruses. Moreover, classroom instruction about COVID-19 by teachers has shown to alleviate students’ stress and anxiety. We provide key areas of student interest about COVID-19 to help educators address students’ questions and improve curricular resources on viral pandemics.
Obesity and male infertility: multifaceted reproductive disruption
Authors: Chaudhuri Gargi Ray , Das Arnab , Kesh Swaraj Bandhu , Bhattacharya Koushik , Dutta Sulagna , Sengupta Pallav , Syamal Alak Kumar 
Published: April 2022

AbstractBackgroundThe global prevalence of obesity has soared to a concerning height in the past few decades. Interestingly, the global decline in semen quality is a parallel occurrence that urges researchers to evaluate if obesity is among the most essential causatives of male infertility or subfertility.Main bodyObesity may alter the synchronized working of the reproductive-endocrine milieu, mainly the hypothalamic-pituitary-gonadal (HPG) axis along with its crosstalks with other reproductive hormones. Obesity-mediated impairment in semen parameters may include several intermediate factors, which include physical factors, essentially increased scrotal temperature due to heavy adipose tissue deposits, and systemic inflammation and oxidative stress (OS) initiated by various adipose tissue-derived pro-inflammatory mediators. Obesity, via its multifaceted mechanisms, may modulate sperm genetic and epigenetic conformation, which severely disrupt sperm functions. Paternal obesity reportedly has significant adverse effects upon the outcome of assisted reproductive techniques (ARTs) and the overall health of offspring. Given the complexity of the underlying mechanisms and rapid emergence of new evidence-based hypotheses, the concept of obesity-mediated male infertility needs timely updates and pristine understanding.ConclusionsThe present review comprehensively explains the possible obesity-mediated mechanisms, especially via physical factors, OS induction, endocrine modulation, immune alterations, and genetic and epigenetic changes, which may culminate in perturbed spermatogenesis, disrupted sperm DNA integrity, compromised sperm functions, and diminished semen quality, leading to impaired male reproductive functions.
Partial splenic artery embolization (PSE) in a patient with grey platelet syndrome (GPS): a case report
Authors: Zaitoun Mohamed M. A. , Abdullah Rania Mohammad , Zaitoun Nahla A. , Shahin Shahenda , Basha Mohammad Abd Alkhalik 
Published: April 2022

Abstract
Background
Grey platelet syndrome (GPS) is a rare cause of mild-to-severe bleeding. Up till now, there has been no definite treatment for GPS.

Case presentation
We reported a case diagnosed as GPS and presented with menorrhagia, metrorrhagia, gingival bleeding, and left hypochondrial pain. The platelet count was 18 thousand/cmm. Ultrasound splenic diameter was 22.0 cm. The multidisciplinary team decided to perform splenectomy; however, the patient was unfit for surgery. Partial splenic artery embolization (PSE) was performed. Follow-up after 24 months showed a normal menstrual cycle and absent pain. Platelet count rise to 70, 55, and 51 thousand/cmm after 1, 12, and 24 months, respectively. Splenic diameter showed a significant decrease to 11.2 cm after 24 months.

Conclusion
PSE is effective and safe in symptomatic patients with GPS.
Spontaneous perforation of common hepatic duct: an intraoperative surprise
Authors: Kerkeni Y. , Thamri F. , Zouaoui A. , Aziza B. , Jouini R. 
Published: April 2022

AbstractBackgroundPediatric spontaneous bile duct perforation is one of the rare causes of acute abdomen in infants. With a highly variable presentation, diagnosis and treatment can prove challenging. We report a case of spontaneous common hepatic duct perforation mistaken for appendicular peritonitis.Case presentationAn otherwise healthy 3-year-old boy presented to the emergency department with complaints of abdominal pain, distention, bilious vomiting, and fever evolving for 4 days. Preoperative ultrasound was suggestive of appendicular peritonitis. Laparotomy revealed abundant biliary fluid, a distended gallbladder with thickened and inflammatory wall, and a macroscopically normal appendix. Intraoperative cholangiography showed a leak of contrast from the anterior wall of the common hepatic duct, 2–3 mm below the upper biliary confluence and 2 cm above the junction of the cystic duct to the common hepatic duct. A cholecystostomy was performed, and two external intraabdominal drains were placed. A retrograde cholangiogram was performed on postoperative day 21 showing no extravasation of contrast product. The patient was discharged on postoperative day 25.ConclusionSpontaneous perforation of the common hepatic duct is a rare phenomenon. It should be considered as a differential diagnosis in pediatric patients that present with unexplained peritonitis. The optimal method of diagnosis and management remains controversial.
Recent advances in the psychopharmacology of major depressive disorder
Authors: Alexander Laith , Young Allan H. 
Published: April 2022

SUMMARYThis review highlights some of the recent advances in the psychopharmacology of major depressive disorder (MDD). We synthesise evidence on emerging pharmacological therapies targeting the serotonergic system, before exploring several novel treatment targets: the glutamatergic system, the GABAergic system and inflammation. When describing new treatment avenues, we examine the evidence base and how far these new treatments are from routine practice.