Publications by authors named "Tse A"

Crimean-Congo hemorrhagic fever virus (CCHFV) is a tickborne virus that can cause severe disease in humans with case fatality rates of 10%-40%. Although structures of CCHFV glycoproteins GP38 and Gc have provided insights into viral entry and defined epitopes of neutralizing and protective antibodies, the structure of glycoprotein Gn and its interactions with GP38 and Gc have remained elusive. Here, we use structure-guided protein engineering to produce a stabilized GP38-Gn-Gc heterotrimeric glycoprotein complex (GP38-Gn-Gc).

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Up to one in five early breast cancer patients develop chronic upper limb lymphedema after breast cancer treatments. This treatment complication is irreversible and can significantly impact the quality of life of breast cancer survivors. The model of prospective surveillance and early intervention has emerged as a potential strategy to prevent the development of this debilitating treatment-related complication.

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Background: Inadequate counseling at patient discharge from the emergency department can lead to adverse patient outcomes. Virtual discharge counseling can address gaps in discharge counseling and improve patients' understanding of instructions.

Methods: A previously established virtual discharge counseling program was scaled across three emergency departments and expanded to 13 diagnoses.

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Background: There is limited evidence in the literature regarding the temporal changes of preeclampsia-related biomarkers during pregnancy in high-risk women who develop preeclampsia despite the administration of aspirin prophylaxis.

Objective: This study aimed to compare the temporal changes in mean arterial pressure, uterine artery pulsatility index, placental growth factor, and soluble fms-like tyrosine kinase-1 across gestation in women identified as having high risk for preterm preeclampsia receiving aspirin prophylaxis and low-risk women without aspirin treatment.

Study Design: This was a prospective longitudinal nested case-control study of 2007 women with singleton pregnancies who participated in the first-trimester screen-and-prevent program for preeclampsia at the Prince of Wales Hospital, Hong Kong Special Administrative Region, China, between January 2020 and May 2023.

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  • Understanding bat coronaviruses (CoVs) is vital for preventing future pandemics, so researchers created modified viruses to study how these bat CoVs enter cells.
  • They discovered a surprising change in a specific region of the virus that improved its ability to bind to a human receptor, enhancing its entry into cells.
  • The study reveals how bat CoVs might adapt to jump between species and suggests strategies to target vulnerabilities in these viruses for potential prevention measures.
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  • Children with ADHD often face sleep issues, which are linked to higher rates of internalizing problems like depression and anxiety.
  • In a study of 188 children with ADHD, 59% reported sleep problems, and those with these issues were less physically active and experienced higher internalizing symptoms.
  • The findings suggest that improving sleep and physical activity could be vital for reducing depression and anxiety in children with ADHD, highlighting the need for future research on these relationships.
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  • The study aimed to create a population pharmacokinetics (PopPK) model for sugemalimab, a PD-L1 targeting monoclonal antibody, using data from multiple clinical trials to understand factors affecting drug exposure.
  • A nonlinear mixed-effect modelling approach analyzed data from 1628 subjects across nine studies, assessing how different characteristics like demographics and health conditions impacted sugemalimab pharmacokinetics.
  • The final model showed that body weight, albumin, gender, and tumor characteristics significantly influenced drug clearance, though none of these covariates had a clinically meaningful effect on overall sugemalimab exposure, suggesting no need for dose adjustments based on these factors.
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  • Cell cycle inhibitors like Paclitaxel and Palbociclib not only halt cancer cell division but also trigger the STING signaling pathway, enhancing their anti-cancer effects.
  • These inhibitors lead to DNA damage and the activation of immune responses, particularly through the DDX41 and SASP factors, which promote immune cell infiltration into tumors.
  • The study suggests that combining cell cycle inhibitors with immunotherapy could improve treatment outcomes, especially in certain types of cancer like hypoxic HCC, where STING signaling is more pronounced.
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Background: Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an autoimmune disease of the peripheral nervous system that can lead to severe disability from muscle weakness and sensory disturbances. Around a third of patients do not respond to currently available treatments, and many patients with a partial response have residual neurological impairment, highlighting the need for effective alternatives. Efgartigimod alfa, a human IgG1 antibody Fc fragment, has demonstrated efficacy and safety in patients with generalised myasthenia gravis.

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Literature covering diseases of the giant panda () is either in Chinese or focuses on infectious agents. Here we describe the clinical signs, gross and microscopic findings, and immunohistochemistry results of a B-cell lymphoma in multiple organs of a 35-y-old captive male giant panda. The animal was euthanized because of prolonged anorexia and vomiting.

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  • Nofazinlimab is a humanized antibody targeting PD-1, showing no dose-limiting toxicities in an Australian first-in-human study with a maximum tolerated dose not reached in the 1-10 mg/kg range.
  • A phase 1a/1b trial in Chinese patients assessed its safety and efficacy, with phase 1a determining a recommended phase 2 dose of 200 mg every 3 weeks, while no dose-limiting toxicities were reported in phase 1b.
  • The results indicated that 23.9% of patients achieved confirmed objective responses, particularly in those with unresectable hepatocellular carcinoma when combined with lenvatinib, showing promising preliminary efficacy for further studies.
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The full-length prefusion-stabilized SARS-CoV-2 spike (S) is the principal antigen of COVID-19 vaccines. Vaccine efficacy has been impacted by emerging variants of concern that accumulate most of the sequence modifications in the immunodominant S1 subunit. S2, in contrast, is the most evolutionarily conserved region of the spike and can elicit broadly neutralizing and protective antibodies.

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Hematopoietic stem cell transplant (HSCT) survivors frequently experience persistent sexual dysfunction, which is associated with impaired quality of life and increased psychological distress. The lack of availability of clinicians with expertise in sexual health limits the capacity to address sexual health concerns in HSCT survivors. Digital health applications may offer a patient-centered and scalable solution to address sexual health concerns in cancer survivors.

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Superior mesenteric artery (SMA) syndrome is a rare cause of proximal bowel obstruction due to duodenal compression by the SMA. The morbidity and mortality associated with delayed diagnosis and its complications make it an important differential cause for bowel obstruction. We report a case of mega-stomach secondary to SMA syndrome requiring total gastrectomy.

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Understanding the zoonotic risks posed by bat coronaviruses (CoVs) is critical for pandemic preparedness. Herein, we generated recombinant vesicular stomatitis viruses (rVSVs) bearing spikes from divergent bat CoVs to investigate their cell entry mechanisms. Unexpectedly, the successful recovery of rVSVs bearing the spike from SHC014, a SARS-like bat CoV, was associated with the acquisition of a novel substitution in the S2 fusion peptide-proximal region (FPPR).

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  • - Wild waterfowl in Hong Kong's Marshes were found to carry various astroviruses, which were identified through testing fecal samples and employing DNA barcoding for host identification.
  • - Notable results included the nearly complete genome of an Avastrovirus 4 clade sample (MP22-196), indicating a unique subclade within the species and possessing distinct genomic features compared to other avian astroviruses.
  • - The study highlights the discovery of a modified sgRNA sequence and a shorter 3' UTR in MP22-196, contributing to a broader understanding of the Avastrovirus 4 clade and its genetic makeup.
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Few studies have reported the cardiovascular health effects of different high-intensity interval training (HIIT) protocols among sedentary young women. We investigated the impact of a traditional HIIT programme and a high-intensity circuit training (HICT) programme on lipid profiles and inflammatory cytokine levels in sedentary young women. Forty-two women were randomly assigned to HICT (body weight-based training), HIIT (cycling-based training), or control groups ( = 14 each).

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Background: Sepsis is a life-threatening condition which may arise from infection in any organ system and requires early recognition and management. Healthcare professionals working in any specialty may need to manage patients with sepsis. Educating medical students about this condition may be an effective way to ensure all future doctors have sufficient ability to diagnose and treat septic patients.

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Although evidence indicates that the adult brain retains a considerable capacity for circuit formation, adult wiring has not been broadly considered and remains poorly understood. In this study, we investigate wiring activation in adult neurons. We show that the basic-helix-loop-helix transcription factor Ascl4 can induce wiring in different types of hippocampal neurons of adult mice.

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Allogeneic hematopoietic cell transplantation (HCT) survivors may benefit from routine screening for post-transplant complications. However, the impact of formal survivorship efforts to promote screening adherence is uncertain. The effect of a formal HCT survivorship program to promote screening adherence was evaluated.

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Background: Although patients undergoing hematopoietic stem cell transplantation (HSCT) must cope with psychological distress and isolation during an extended transplant hospitalization, psychosocial interventions to address these unmet needs are lacking. Virtual reality offers an innovative modality to deliver a patient-centered psychosocial intervention to address psychosocial needs of patients undergoing HSCT. However, there are currently no supportive care interventions leveraging virtual reality in patients undergoing HSCT.

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Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus that can cause severe disease in humans with case fatality rates of 10-40%. Although structures of CCHFV glycoproteins GP38 and Gc have provided insights into viral entry and defined epitopes of neutralizing and protective antibodies, the structure of glycoprotein Gn and its interactions with GP38 and Gc have remained elusive. Here, we used structure-guided protein engineering to produce a stabilized GP38-Gn-Gc heterotrimeric glycoprotein complex (GP38-Gn-Gc).

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Background: This study investigated the safety and efficacy of an anti-CTLA-4 monoclonal antibody (CS1002) as monotherapy and in combination with an anti-PD-1 monoclonal antibody (CS1003) in patients with advanced/metastatic solid tumors.

Methods: The phase 1 study involved phase 1a monotherapy dose-escalation (part 1) and phase 1b combination therapy dose escalation (part 2) and expansion (part 3). Various dosing schedules of CS1002 (0.

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Ever-evolving SARS-CoV-2 variants of concern (VOCs) have diminished the effectiveness of therapeutic antibodies and vaccines. Developing a coronavirus vaccine that offers a greater breadth of protection against current and future VOCs would eliminate the need to reformulate COVID-19 vaccines. Here, we rationally engineer the sequence-conserved S2 subunit of the SARS-CoV-2 spike protein and characterize the resulting S2-only antigens.

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