Publications by authors named "L M Looi"

Climate change not only leads to high temperatures, droughts, floods, storms and declining soil quality, but it also affects the spread and mutation of pests and diseases, which directly influences plant growth and constitutes a new challenge to food security. Numerous hormones like auxin, ethylene and melatonin, regulate plant growth and development as well as their resistance to environmental stresses. To mitigate the impact of diverse biotic and abiotic stressors on crops, single or multiple phytohormones in combination have been applied.

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Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is an established technique for lung cancer staging and the diagnosis of mediastinal diseases. Recently, the paradigm of EBUS guided mediastinal sampling with conventional cytology has shifted over to histology specimens through the use of cryobiopsy. This case series explores the novel technique, key enablers, and potential advantages of endoscopic ultrasound with bronchoscope-guided transesophageal cryobiopsy (EUS-B-TEC).

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The human epidermal growth factor receptor 2 (HER2) gene is a critical biomarker for determining amplification status and targeting clinical therapies in breast cancer treatment. This study introduces a computer-aided method that automatically measures and scores HER2 gene status from invasive tissue regions of breast cancer using whole slide images (WSI) through silver hybridization (SISH) staining. Image processing and deep learning techniques are employed to isolate untruncated and non-overlapping single nuclei from cancer regions.

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Article Synopsis
  • Triple-negative breast cancer (TNBC) is challenging to treat due to poor prognosis and lack of effective therapies; targeting PD-L1 may offer potential benefits.
  • A study in Malaysia involved 138 advanced TNBC patients, assessing PD-L1 positivity using tissue samples.
  • Results showed 37.7% had positive PD-L1 expression, with a notable association between PD-L1 positivity and resected tumor samples.
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Article Synopsis
  • Fluorescence in situ hybridization (FISH) is the standard method for checking HER2 status in breast cancer, but it has downsides like needing special training and facing signal degradation; an alternative method, silver-enhanced in situ hybridization (SISH), offers a more durable solution for analysis via bright-field microscopy.* -
  • This study introduces a novel deep learning approach to classify Normal, Amplified, and Non-Amplified regions in HER2-SISH whole slide images, aiming to improve accuracy over traditional methods.* -
  • Using a private dataset, the researchers achieved a striking 99.9% patch-level accuracy and an average accuracy of 98% through k-fold cross-validation, suggesting that this deep
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