Publications by authors named "Lim S Kiat"

DLBCL is the most common lymphoma with high tumor heterogeneity. Treatment refractoriness and relapse from R-CHOP therapy in patients remain a clinical problem. Activation of the non-canonical NF-κB pathway is associated with R-CHOP resistance.

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WBP2 is an emerging oncoprotein with diverse functions in breast tumorigenesis via regulating Wnt, epidermal growth factor receptor, estrogen receptor, and Hippo. Recently, evidence shows that WBP2 is tightly regulated by the components of the miRNA biogenesis machinery such as DGCR8 and Dicer via producing both WBP2's 3'UTR and coding DNA sequence-targeting miRNAs. This led us to hypothesize that WBP2 could provide a feedback loop to the biogenesis of its key upstream regulators by regulating the microprocessor complex activity.

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A bacterial mass in the urinary tract is a very rare entity. We report the first case of a bacterial ball within the urinary tract of a patient with diabetic cystopathy on long term urinary indwelling catheter. She presented with fever and gross haematuria.

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WBP2 transcription coactivator is an emerging oncoprotein and a key node of convergence between EGF and Wnt signaling pathways. Understanding how WBP2 is regulated has important implications for cancer therapy. WBP2 is tightly controlled by post-translational modifications, including phosphorylation and ubiquitination, leading to changes in subcellular localization, protein-protein interactions, and protein turnover.

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The transcriptional coactivator WW domain-binding protein 2 (WBP2) is an emerging oncogene and serves as a node between the signaling protein Wnt and other signaling molecules and pathways, including epidermal growth factor receptor, estrogen receptor/progesterone receptor, and the Hippo pathway. The upstream regulation of WBP2 is well-studied, but its downstream activity remains unclear. Here, we elucidated WBP2's role in triple-negative breast cancer (TNBC), in which Wnt signaling is predominantly activated.

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Purpose: The use of ultrasound in percutaneous nephrolithotomy (PCNL) has not been shown to translate to better clinical and stone outcomes. To compare the operative outcomes, postoperative outcomes and complication rates of ultrasound-guided access PCNL (USGA-PCNL) versus fluoroscopy-guided access PCNL (FGA-PCNL).

Materials And Methods: A total of 184 consecutive patients who underwent PCNL from July 2008 to September 2014 were identified from our PCNL database.

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It has recently been shown that waste biomass can be converted into a wide range of functional materials, including those with desirable optical and electronic properties, offering the opportunity to find new uses for these renewable resources. Photovoltaics is one area in which finding the combination of abundant, low-cost and non-toxic materials with the necessary functionality can be challenging. In this paper the performance of carbon nanodots derived from a wide range of biomaterials obtained from different biomass sources as sensitisers for TiO -based nanostructured solar cells was compared; polysaccharides (chitosan and chitin), monosaccharide (d-glucose), amino acids (l-arginine and l-cysteine) and raw lobster shells were used to produce carbon nanodots through hydrothermal carbonisation.

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Adrenal surgery is undergoing continuous evolution and minimally invasive surgery is increasingly being used for the surgical management of adrenal masses. With robotic-assisted surgery being a widely accepted surgical treatment for many urological conditions such as prostate carcinoma and renal cell carcinoma, the use of the robot has been expanded to include robotic-assisted adrenalectomy, offering an alternative minimally invasive platform for adrenal surgery. We performed a literature review on robotic-assisted adrenalectomy, reviewing the current surgical techniques and perioperative outcomes.

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Cross-talk between the Hippo and Wnt pathways has been implicated recently in breast cancer development, but key intersections have yet to be fully defined. Here we report that WBP2, a transcription coactivator that binds the Hippo pathway transcription factor YAP/TAZ, contributes to Wnt signaling and breast cancer pathogenesis. Clinically, overexpression of WBP2 in breast cancer specimens correlated with malignant progression and poor patient survival.

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Robot-assisted surgery was just a medical curiosity until the development of the da Vinci robotic system, and since then, it has become a widely accepted surgical treatment for many urological conditions such as prostate carcinoma and renal cell carcinoma. With the increase in the number of urologists using the robot and the improvement in surgeon experience, the use of the robot has been expanded to include performing radical nephroureterectomy (NU) for the treatment of primary upper tract urothelial carcinoma. We performed a literature review on robot-assisted laparoscopic NU with the aim of providing a current perspective on robot-assisted laparoscopic NU for the management of upper tract urothelial carcinoma.

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Purpose: Preoperatively predicting postoperative kidney function is an essential step to achieve improved renal function and prevent chronic kidney disease. We introduce a novel formula especially to calculate resected and ischemic volume before partial nephrectomy. We examined whether resected and ischemic volume would have value for predicting postoperative renal function.

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In this study, we reported our experience performing robotic extended lymph node dissection (eLND) in patients with prostate cancer. A total of 147 patients with intermediate and high-risk prostate cancer who underwent robotic eLND from May 2008 to December 2011 were included in this analysis. The dissection template extended to the ureter crossing the iliac vessels.

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Objective: To compare long-term functional outcomes and pain scale scores of patients who underwent laparoendoscopic single-site (LESS)- robot-assisted partial nephrectomy (RAPN) to those who underwent conventional RAPN (C-RAPN), as LESS surgery is increasingly being adopted by urologists worldwide to reduce morbidities and scarring associated with surgical interventions.

Patients And Methods: In all, 167 consecutive patients who had RAPN were identified from our Institutional Review Board-approved computerised database between October 2006 to July 2012. Patients were stratified into two groups: 80 patients who underwent C-RAPN and 79 who underwent LESS-RAPN.

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Purpose: In the era of robotic partial nephrectomy (RPN), several efforts on improved renal functional outcome have been reported. Selective-clamp is a novel technique that eliminates global ischemia, the clinical value of which needs to be demonstrated. The purpose of this study was to compare the postoperative functional outcomes of patients who underwent selective-clamp and total-clamping RPN.

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Objective: To compare the early peri-operative, oncological and continence outcomes of Retzius-sparing robot-assisted laparoscopic radical prostatectomy (RALP) with those of conventional RALP.

Materials And Methods: Data from 50 patients who underwent Retzius-sparing RALP and who had at least 6 months of follow-up were prospectively collected and compared with a database of patients who underwent conventional RALP. Propensity-score matching was performed using seven preoperative variables, and postoperative variables were compared between the groups.

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Objective: To investigate the associations between prostate elasticity and lower urinary tract symptoms (LUTS).

Methods: From August 2009 to December 2009, 48 patients with no history of neoadjuvant therapy or previous prostate surgery who underwent robot-assisted radical prostatectomy were included in this study. A novel palpation system was used to measure the tissue elasticity of the prostate specimens.

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Purpose: A rapid growth in the socioeconomic status of Koreans has triggered an unprecedented explosion of health information for the general population. Despite its obvious benefits, this increase in information could also result in potentially harmful effects for both consumers and professionals who do not use it appropriately. Thus, this study was conducted to evaluate the quality and accuracy of health information on erectile dysfunction from 10 nationwide daily newspapers.

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Objective: To evaluate whether assessing the anatomical characteristics of renal masses increases the accuracy of prediction of tumour pathology in small renal masses (SRMs).

Patients And Methods: We retrospectively reviewed 1129 consecutive patients who underwent extirpative surgeries for a clinical T1 renal mass, for which the preoperative aspects and dimensions used for an anatomical (PADUA) classification were available. Multivariate logistic regression analyses of demographic and anatomical characteristics were performed.

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Objective: To compare the peri-operative, pathological and oncological outcomes of laparoendoscopic single-site (LESS) robot-assisted nephroureterectomy (LESS-RALNU) with those of multiport robot-asssisted nephroureterectomy (M-RALNU).

Patients And Methods: A total of 38 patients with upper urinary tract urothelial carcinoma underwent LESS-RALNU (n = 17) or M-RALNU (n = 21) by a single surgeon at a tertiary institution. Data were obtained from a prospectively maintained database.

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Objective: To develop a novel nomogram to predict lymph node invasion (LNI) in Asian men undergoing radical prostatectomy (RP) and pelvic LN dissection (PLND) for localised prostate cancer.

Patients And Methods: The patient cohort included 541 patients who underwent robot-assisted RP and PLND by a single surgeon between January 2008 and December 2011. Patients with dissection of <10 LNs, prostate-specific antigen (PSA) levels of >50 ng/mL, incomplete biopsy data, and treatment with neoadjuvant therapy were excluded.

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Background: The objective of this study was to develop a new AS protocol and compare it with the existing selected published AS protocols by examining the pathological characteristics of post-RARP specimens in patients eligible for AS.

Materials And Methods: From a database of 1046 patients, 344 post-RARP patients with biopsy Gleason scores ≤ 6 prostate cancer (PCa) without neoadjuvant therapy were included. Six AS protocols were identified and evaluated for pathological and oncological end points.

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