Publications by authors named "Cam Nguyen"

Article Synopsis
  • * Researchers found that the Cat Ba langur has low genetic diversity, high inbreeding rates, and harmful mutations, indicating a significant genetic burden; however, some adaptive potential has been preserved.
  • * Unique genetic variants related to calcium and sodium metabolism were identified, suggesting these adaptations might help the langurs thrive in their specific environment of high calcium and saltwater.
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Ultrasound (US) has gained popularity as a guidance modality for percutaneous needle insertions because it is widely available and non-ionizing. However, coordinating scanning and needle insertion still requires significant experience. Current assistance solutions utilize optical or electromagnetic tracking (EMT) technology directly integrated into the US device or probe.

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Background: Stereotactic body radiation therapy (SBRT) is known to modulate the immune system and contribute to the generation of anti-tumor T cells and stimulate T cell infiltration into tumors. Radiation-induced immune suppression (RIIS) is a side effect of radiation therapy that can decrease immunological function by killing naive T cells as well as SBRT-induced newly created effector T cells, suppressing the immune response to tumors and increasing susceptibility to infections.

Purpose: RIIS varies substantially among patients and it is currently unclear what drives this variability.

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Background: Venous thromboembolism is a preventable complication of gynecologic cancer surgery that leads to postoperative morbidity and mortality. This study compared apixaban with enoxaparin to identify whether apixaban had the same safety and efficacy for patients undergoing gynecologic cancer surgery.

Methods: The study identified patients with a gynecologic malignancy who underwent surgery and were prescribed apixaban at discharge between June 2020 and April 2023.

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Excess soil salinity significantly impairs plant growth and development. Our previous reports demonstrated that the core circadian clock oscillator GIGANTEA (GI) negatively regulates salt stress tolerance by sequestering the SALT OVERLY SENSITIVE (SOS) 2 kinase, an essential component of the SOS pathway. Salt stress induces calcium-dependent cytoplasmic GI degradation, resulting in activation of the SOS pathway; however, the precise molecular mechanism governing GI degradation during salt stress remains enigmatic.

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Importance: Despite interest in therapy de-escalation for survivors of human papillomavirus-mediated oropharyngeal squamous cell carcinoma (HPV-positive OPSCC), the association of de-escalated therapy with patient-reported quality of life (QoL) outcomes and burden of depressive symptoms remains unclear.

Objective: To identify associations between clinicopathologic and therapeutic variables with patient-reported QoL outcomes and depression symptom burden in patients with HPV-positive OPSCC, who were enrolled in a therapy de-escalation trial.

Design, Setting, And Participants: In this nonrandomized controlled, open-label, curative-intent therapy de-escalation clinical trial in adults with stage I, II, and III HPV-positive OPSCC, patients were recruited from a high-volume head and neck oncology practice.

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Article Synopsis
  • This study focuses on Burkholderia dolosa, a dangerous pathogen that can cause infections in hospitalized patients, especially those with strokes. A specific isolate, B. dolosa N149, was characterized as highly resistant to many antibiotics and exceptionally virulent.
  • Using advanced genetic techniques, the researchers identified that this strain had resistance to 31 antibiotics and showcased various mechanisms like multidrug efflux pumps that contribute to its drug resistance.
  • The genome analysis revealed numerous virulence genes linked to its ability to cause disease, and B. dolosa N149 was classified as a new sequence type, furthering understanding of its genetic diversity and potential threat in clinical settings.
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Unlabelled: Tomato ( L.) is one of the most important crops in the world for its fruit production. Advances in cutting-edge techniques have enabled the development of numerous critical traits related to the quality and quantity of tomatoes.

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Background: Radiotherapy is an essential component of cancer treatment, yet many countries do not have adequate capacity to serve all patients who would benefit from it. Allocation systems are needed to guide patient prioritization for radiotherapy in resource-limited contexts. These systems should be informed by allocation principles deemed relevant to stakeholders.

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Objective: To determine biomarkers other than CA 125 that could be used in identifying early-stage ovarian cancer.

Data Sources: Ovid MEDLINE ALL, EMBASE, Web of Science Core Collection, ScienceDirect, Clinicaltrials.gov , and CAB Direct were searched for English-language studies between January 2008 and April 2023 for the concepts of high-grade serous ovarian cancer, testing, and prevention or early diagnosis.

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Pesticides are on the list of substances that are routinely monitored by agencies and organizations in various natural environments and habitats. Diazinon (DZN) is the active ingredient in more than 20 agricultural pesticides, it causes the most damage and has been prohibited in many countries around the world. The final product CoWO/g-CN Z-scheme heterojunction was successfully synthesized in this work, where CoWO nanoparticles were deposited on the surface of g-CN.

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Article Synopsis
  • This study examines the effectiveness of using gracilis free muscle transfer (GFMT) as a second option for facial reanimation after a failed primary reconstruction for facial paralysis.* -
  • Twelve patients were analyzed, categorized based on their initial failed procedures, and outcomes were measured using specific metrics to evaluate improvements in facial movement and emotional expression.* -
  • Results indicated significant postoperative enhancements in facial function across all groups, but those who underwent GFMT secondary to a failed procedure had lower oral movement scores compared to patients initially treated with static methods.*
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A novel cyanine compound based on the conjugated perylene-benzothiazole system (PBI) as a colorimetric and fluorometric dual-channel sensor for cyanide (CN ) detection was synthesized and characterized via UV-vis and fluorescence spectroscopy. PBI exhibited a high sensitivity and rapid optical response for CN due to the intramolecular charge transfer (ICT) mechanism. The detection limit of PBI for CN was 1.

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We assessed predominantly pediatric patients in Vietnam with dengue and other febrile illness 3 months after acute illness. Among dengue patients, 47% reported >1 postacute symptom. Most resolved by 3 months, but alopecia and vision problems often persisted.

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Nanosilica is a versatile nanomaterial suitable as, e.g., drug carriers in medicine, fillers in polymers, and fertilizer/pesticide carriers and potentially a bioavailable source of silicon in agriculture.

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Purpose: In describing our ten-year experience with treating chronic myeloid leukemia (CML) as part of the Glivec Patient Assistance Program (GIPAP) in rural Rwanda, we evaluate (1) patient characteristics and treatment outcomes, (2) resource-adapted management strategies, and (3) the impact of diagnostic capacity development.

Methods: We retrospectively reviewed all patients with BCR-ABL-positive CML enrolled in this GIPAP program between 2009 and 2018. Clinical data were analyzed using descriptive statistics, Kaplan-Meier methods, proportional hazards regression, and the Kruskal-Wallis test.

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Purpose: Nephroblastoma is a highly curable pediatric cancer that requires multidisciplinary care. Few reports have assessed long-term treatment outcomes in low-resource settings using a task-shifting model of care. We report outcomes of a large cohort and factors associated with survival.

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Perineural invasion is a rare prognostic finding of squamous cell carcinomas that is associated with a poor prognosis. Early recognition of perineural invasion is imperative to improving treatment and lowering recurrence. Here we report the case of a 77-year-old Caucasian male with a suspicious mass on his forehead.

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Objective: Most cervical cancer cases and deaths occur in low- and middle-income countries, yet clinical research from these contexts is significantly underrepresented. We aimed to describe the treatment quality, resource-driven adaptations, and outcomes of cervical cancer patients in Rwanda.

Methods: A retrospective cohort study was conducted of all patients with newly diagnosed cervical cancer enrolled between April 2016 and June 2018.

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Background: Spontaneous double-stranded DNA breaks (DSBs) frequently occur within the genome of all living organisms and must be well repaired for survival. Recently, more important roles of the DSB repair pathways that were previously thought to be minor pathways, such as single-strand annealing (SSA), have been shown. Nevertheless, the biochemical mechanisms and applications of the SSA pathway in genome editing have not been updated.

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Article Synopsis
  • - Radiotherapy is crucial for cancer treatment, but many countries lack the resources to meet the high demand, necessitating a system for prioritizing patients in low-resource settings.
  • - This study involved interviews with 22 healthcare professionals in Rwanda, exploring their experiences with existing radiotherapy prioritization processes and identifying challenges and recommendations for improvement.
  • - Participants highlighted the importance of establishing fair procedures based on objective criteria to maximize lives saved, while also noting unresolved issues like conflicting rationales and the resource demands of implementing these fair procedures.
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Background: Myelosuppression is a potential dose-limiting factor in radioligand therapy (RLT). This study aims to investigate occurrence, severity and reversibility of hematotoxic adverse events in patients undergoing RLT with Lu-PSMA-617 for metastatic castration-resistant prostate cancer (mCRPC). The contribution of pretreatment risk factors and cumulative treatment activity is taken into account specifically.

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Background: Moral distress and burnout are highly prevalent among oncology clinicians. Research is needed to better understand how resource constraints and systemic inequalities contribute to moral distress in order to develop effective mitigation strategies. Oncology providers in low- and middle-income countries are well positioned to provide insight into the moral experience of cancer care priority setting and expertise to guide solutions.

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