Publications by authors named "Li V"

Article Synopsis
  • Many tumor cells rely on external sources of serine, and cutting off serine and glycine from the diet can slow down cancer growth and improve survival in mice.
  • Even though this treatment is promising, some tumors develop resistance through mechanisms like increasing their own serine production.
  • The study shows that blocking PHGDH, an enzyme in serine synthesis, alongside a serine-deficient diet, can effectively inhibit cancer and improve treatment outcomes, even in tumors that typically resist such strategies.
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Background: The Protocol for Responding to and Assessing Patient Assets, Risks, and Experiences (PRAPARE) is a nationally recognized standardized protocol that goes beyond medical acuity to account for patients' social determinants of health (SDH).

Aims: We described the magnitude of patient SDH barriers at health centers.

Methods: Health centers across three PRAPARE implementation cohorts collected and submitted PRAPARE data using a standardized data reporting template.

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Tea is a popular beverage consumed at different temperatures. The effect of tea on teeth at different temperatures has not been studied previously. The present study used an in vitro green tea immersed tooth model at different tea temperatures (hot and cold) compared to an in vivo tea administration model allowing rats to drink tea over the course of a week.

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Aims: This study determined the associations between right atrial (RA) and right ventricular (RV) mechanics and liver stiffness in adults with repaired tetralogy of Fallot (TOF), pulmonary atresia with intact ventricular septum (PAVIS), and pulmonary stenosis (PS).

Methods And Results: Ninety subjects including 26 repaired TOF, 24 PAIVS, and 20 PS patients and 20 controls were studied. Hepatic shear wave velocity and tissue elasticity (E), measures of liver stiffness, were assessed by two-dimensional shear wave elastography, while RA and RV mechanics were assessed by speckle tracking echocardiography.

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Efforts to develop more environmentally friendly alternatives to traditional broad-spectrum pesticides in agriculture have recently turned to RNA interference (RNAi) technology. With the built-in, sequence-specific knockdown of gene targets following delivery of double-stranded RNA (dsRNA), RNAi offers the promise of controlling pests and pathogens without adversely affecting non-target species. Significant advances in the efficacy of this technology have been observed in a wide range of species, including many insect pests and fungal pathogens.

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In 2020, major advances to the understanding of gastrointestinal inflammatory and infectious disease have been made using ‘mini-gut’ organoids. Key findings include the discovery of somatic inflammatory gene mutations in ulcerative colitis epithelium, a unique mutational signature in colorectal cancer caused by genotoxic , and infection of intestinal organoids by SARS-CoV-2.

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Objectives: The Medicines and Healthcare Products Regulatory Agency in the United Kingdom (UK) formally reclassified sildenafil citrate 50 mg tablets as a pharmacy medicine (sildenafil-P) in 2017 for adult men with erectile dysfunction (ED). A 1-year prospective real-world observational study was conducted to track men's health behaviour, particularly their healthcare resource utilisation (HCRU) and quality of life (QoL) before and after the availability of sildenafil-P.

Methods: Adult men with ED aged ≥18 years provided data at baseline (prior to launch of sildenafil-P) and every 3 months after the launch.

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Beyond classical metabolic functions in energy storage and energy expenditure, adipose tissue is also a dynamic endocrine organ that secretes bioactive factors into blood plasma. Historically, studies of the adipose secretome have predominantly focused on polypeptide adipokines. Recently, adipose-derived blood-borne lipids ("lipokines") have emerged as a distinct class of endocrine factors.

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Secreted polypeptides are a fundamental axis of intercellular and endocrine communication. However, a global understanding of the composition and dynamics of cellular secretomes in intact mammalian organisms has been lacking. Here, we introduce a proximity biotinylation strategy that enables labeling, detection and enrichment of secreted polypeptides in a cell type-selective manner in mice.

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Since the outbreak of the SARS-CoV-2 pandemic, there have been intense structural studies on purified recombinant viral components and inactivated viruses. However, investigation of the SARS-CoV-2 infection in the native cellular context is scarce, and there is a lack of comprehensive knowledge on SARS-CoV-2 replicative cycle. Understanding the genome replication, assembly and egress of SARS-CoV-2, a multistage process that involves different cellular compartments and the activity of many viral and cellular proteins, is critically important as it bears the means of medical intervention to stop infection.

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Background: Little is known about the impact of the provision of handheld point-of-care ultrasound (POCUS) devices on physical examination skills of medical students.

Methods: We describe an educational initiative that comprised a POCUS workshop followed by allocation of a POCUS device to medical students for use over the subsequent 8 weeks. They were encouraged to scan patients and correlate their physical examination findings.

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Article Synopsis
  • The study evaluated the ongoing bladder, bowel, and sexual dysfunction in patients who experienced transverse myelitis due to MOG-Ab disease, even after they regained mobility.
  • Researchers assessed twelve patients using clinical evaluations and specialized tests to explore these dysfunctions over a follow-up period of about 50 months.
  • The findings revealed significant urinary issues, particularly in patients with conus lesions, and indicated that persistent urogenital problems may stem from higher-level spinal injuries rather than the conus itself.
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Protein glycosylation events that happen early in the secretory pathway are often dysregulated during tumorigenesis. These events can be probed, in principle, by monosaccharides with bioorthogonal tags that would ideally be specific for distinct glycan subtypes. However, metabolic interconversion into other monosaccharides drastically reduces such specificity in the living cell.

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Disturbance, which is generally unknown to the controller, is unavoidable in real-world systems and it may affect the expected system state and output. Existing control methods, like robust model predictive control, can produce robust solutions to maintain the system stability. However, these robust methods trade the solution optimality for stability.

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Human decisions can be biased by irrelevant information. For example, choices between two preferred alternatives can be swayed by a third option that is inferior or unavailable. Previous work has identified three classic biases, known as the attraction, similarity, and compromise effects, which arise during choices between economic alternatives defined by two attributes.

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Objective: Patients with Multiple Sclerosis (MS) and on disease modifying therapies (DMTs) that can be immunosuppressive or immunomodulatory form a special group where risk of continuation of DMT needs to be taken into account with risk of contracting Covid-19. This concept can pose a degree of anxiety for patients as well as neurologists. We aimed to evaluate patient perspectives regarding the use of Natalizumab and anti-CD20 therapies (Rituximab and Ocrelizumab) in the context of the COVID-19 pandemic.

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Aim And Objectives: To identify the practice variation of the individual practitioners in medications' formulation modification for patients using enteral feeding tubing and to support health practitioners involved in this process.

Background: Blockage of enteral tubes is a common problem that can sometimes be resolved but may require replacement of the tube. Medications are a common culprit.

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Background: Enteral feeding tubes are associated with their most serious complications in the days and weeks after insertion, but there are limited published data in the literature on late complications and the implications for the healthcare service.

Methods: This is a retrospective observational study of attendances to a UK hospital emergency department (ED), with enteral tube complications as the primary reason for attendance.

Results: Over 24 months, 139 attendances were recorded.

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Intestinal failure, following extensive anatomical or functional loss of small intestine, has debilitating long-term consequences for children. The priority of patient care is to increase the length of functional intestine, particularly the jejunum, to promote nutritional independence. Here we construct autologous jejunal mucosal grafts using biomaterials from pediatric patients and show that patient-derived organoids can be expanded efficiently in vitro.

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Plasmodium invasion of mosquito midguts is a mandatory step for malaria transmission. The roles of mosquito midgut proteins and parasite interaction during malaria transmission are not clear. This study aims to identify mosquito midgut proteins that interact with and affect P.

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The Make Healthy Normal obesity prevention mass media campaign was implemented in New South Wales, Australia from 2015 to 2018. This study evaluated Phase 2 (2017-18) of that campaign, using three cross-sectional online surveys with men aged 18-54 years (n = 4352) and six focus groups with men aged 35-54 years and parents with children aged 5-12 years (n = 38), reflecting the campaign's target audiences. We used linear and logistic regressions to examine changes over time in key outcomes, consistent with the campaign's theorized hierarchy of effects.

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Article Synopsis
  • Urinary tract infections (UTIs) are a significant issue for patients with multiple sclerosis (PwMS), often leading to hospital visits, with a focus on those with complex neurological and urological characteristics.
  • A study of 52 PwMS revealed a high frequency of UTI presentations, particularly in older males with progressive MS, many of whom used urinary catheters and had poor access to urological follow-up.
  • Key findings highlight that targeted preventative measures and better management strategies are essential to reduce UTI occurrences in these patients, emphasizing the importance of comprehensive bladder and physical care.
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Beijing is one of the most polluted cities in the world. However, the "Air Pollution Prevention and Control Action Plan" (APPCAP), introduced since 2013 in China, has created an unprecedented drop in pollution concentrations for five major pollutants, except O, with a significant drop in mortalities across most parts of the city. To assess the effects of APPCAP, air pollution data were collected from 35 sites (divided into four types, namely, urban, suburban, regional background, and traffic) in Beijing, from 2014 to 2018 and analyzed.

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Intestinal stem cells (ISCs) are highly proliferative cells that fuel the continuous renewal of the intestinal epithelium. Understanding their regulatory mechanisms during tissue homeostasis is key to delineating their roles in development and regeneration, as well as diseases such as bowel cancer and inflammatory bowel disease. Previous studies of ISCs focused mainly on the position of these cells along the intestinal crypt and their capacity for multipotency.

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Article Synopsis
  • Cancer cells can adapt their energy-making processes to survive, making it hard to treat them effectively.
  • In a study, scientists found that blocking certain parts of how cancer cells use nutrients still lets them find other ways to keep growing.
  • Combining multiple treatments to shut down these backup systems or changing diets can help fight cancer better.
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