Publications by authors named "Parvaiz A"

Aim: The use of robotic surgery is increasing significantly. Specific training is fundamental to achieve high quality and better oncological outcomes. This work defines key exposure techniques in robotic total mesorectal excision (TME).

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This study focuses on the cowpea weevil, Callosobruchus maculatus, a globally distributed grain pest that affects cereals and pulses. Using chemicals to store grains can harm pest control and pose risks to consumers and the environment. The facultative intracellular symbiont bacteria Wolbachia can affect host's reproductive capacities in a variety of ways, which makes it useful in the management of pests such as C.

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The diet of L. is a crucial factor for managing its colonies particularly during dearth periods. Numerous diets have been developed; however, their global implementation faces challenges due to diverse climatic conditions and some other factors.

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Introduction: In the past 30 years, minimally invasive surgery (MIS) has made remarkable progress and has become the standard of care in colorectal cancer treatment. The implementation of new techniques or platforms is, therefore, a challenge for surgical teams. This study aims to analyze the experience in the implementation of minimally invasive surgery in the colorectal unit in a specialized colorectal cancer center.

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Article Synopsis
  • Organ preservation through the Watch and Wait (WW) approach in rectal cancer patients shows promise but poses a risk of local regrowth (LR), leading to higher rates of distant metastases (DM) compared to traditional surgery (TME).
  • A study comparing 508 LR patients managed by WW and 893 near-complete pathologic response (nPCR) patients after TME found a significantly higher DM rate in the LR group (22.8% vs. 10.2%).
  • The research concluded that patients with LR have poorer 3-year DM-free survival (75% vs. 87%) and highlight that leaving a primary undetectable tumor can result in worse overall outcomes.
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  • Colorectal cancer (CRC) is a common global concern, prompting research into defining methods for characterizing its tissues; this study examines the autofluorescence of colorectal tissues from 73 patients post-surgery.
  • The research utilized an advanced optical imaging system to analyze the autofluorescence characteristics of collagens, NAD(P)H, and flavins, revealing key differences between normal, adenomatous, and cancerous tissues linked to the underlying clinicopathological features.
  • Findings show that changes in autofluorescence signatures, influenced by tumor characteristics and treatment effects, suggest potential for these measurements to improve CRC clinical practices from diagnosis to management and future research directions.
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Aim: The aim of this study was to assess the short-term outcomes of robotic colorectal surgery implemented through a structured, standardized training pathway in five colorectal centres in the United Kingdom.

Method: A multicentre retrospective observational study was conducted, involving 523 consecutive patients who underwent robotic colorectal resection between 2015 and 2019. All participating centres followed the European Academy of Robotic Colorectal Surgery training pathway.

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During plant-pathogen interaction, plant exhibits a strong defense system utilizing diverse groups of proteins to suppress the infection and subsequent establishment of the pathogen. However, in response, pathogens trigger an anti-silencing mechanism to overcome the host defense machinery. Among plant viruses, geminiviruses are the second largest virus family with a worldwide distribution and continue to be production constraints to food, feed, and fiber crops.

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Advancements in optical imaging techniques have revolutionized the field of biomedical research, allowing for the comprehensive characterization of tissues and their underlying biological processes. Yet, there is still a lack of tools to provide quantitative and objective characterization of tissues that can aid clinical assessment in vivo to enhance diagnostic and therapeutic interventions. Here, we present a clinically viable fiber-based imaging system combining time-resolved spectrofluorimetry and reflectance spectroscopy to achieve fast multiparametric macroscopic characterization of tissues.

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Cancer patients often undergo rounds of trial-and-error to find the most effective treatment because there is no test in the clinical practice for predicting therapy response. Here, we conduct a clinical study to validate the zebrafish patient-derived xenograft model (zAvatar) as a fast predictive platform for personalized treatment in colorectal cancer. zAvatars are generated with patient tumor cells, treated exactly with the same therapy as their corresponding patient and analyzed at single-cell resolution.

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The development of genotypes that can tolerate high levels of salt is crucial for the efficient use of salt-affected land and for enhancing crop productivity worldwide. Therefore, incorporating salinity tolerance is a critical trait that crops must possess. Salt resistance is a complex character, controlled by multiple genes both physiologically and genetically.

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Plant viruses are the most abundant destructive agents that exist in every ecosystem, causing severe diseases in multiple crops worldwide. Currently, a major gap is present in computational biology determining plant viruses interaction with its host. We lay out a strategy to extract virus-host protein interactions using various protein binding and interface methods for Geminiviridae, a second largest virus family.

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Article Synopsis
  • Survival analysis is vital in medical statistics, helping predict patient survival and improve treatment plans by identifying biomarkers, especially in cancer research.
  • The integration of AI with digital histology images enhances survival prediction accuracy by leveraging advanced methods to analyze complex tissue images.
  • This review serves as a comprehensive guide for AI practitioners and medical professionals, addressing methodologies, challenges, and future research directions in cancer precision medicine.
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Introduction: Breast-conserving surgery (BCS) has been historically linked with a high rate of re-excision. To address this issue, the Society of Surgical Oncology (SSO) and the American Society for Radiation Oncology (ASTRO) developed consensus guidelines in 2014 to standardize practices and improve clinical outcomes for BCS patients. In our tertiary cancer care hospital, we assessed the impact of these guidelines on the re-excision rate following BCS.

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Researchers repeatedly raised concerns about building in Himalayas' unstable geology.

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Background: Although transanal minimally invasive surgery (TAMIS) for rectal neoplasia has gained wide acceptance, the mid-term and long-term outcomes are not widely reported in the literature.

Objective: Describe the mid-term outcomes of patients who underwent TAMIS for benign and malignant rectal lesions in a single center.

Design: Retrospective cohort study.

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This study aimed to investigate the impact of individual drought, heat, and combined drought and heat stress on twelve cotton genotypes, including eight tolerant and four susceptible genotypes. A field experiment was carried out by employing a randomized complete block split-plot design, with treatments (control, drought, heat, drought + heat), and cotton genotypes assigned to the main plots and sub-plots respectively. The results showed that the combined stress had a more severe impact on the yield and fiber quality of cotton genotypes compared to individual stresses.

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Cataracts are the problems associated with the crystallins proteins of the eye lens. Any perturbation in the conformity of these proteins results in a cataract. Age-related cataract is the most common type among all cataracts as it accounts for almost 80% of cases of senile blindness worldwide.

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Article Synopsis
  • The study evaluates "textbook oncological outcomes" (TOO), a composite measure of ideal postoperative outcomes from robotic colorectal cancer surgeries.
  • It involved analyzing data from 501 patients over a nine-year period, where 77.4% achieved TOO based on various clinical outcomes.
  • The findings suggest that robotic surgeries overall yield high quality care, but abdominoperineal resection presents a risk factor for not achieving these ideal outcomes.
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Background: A proportion of rectal cancer patients who achieve a clinical complete response may develop local regrowth. Although salvage appears to provide appropriate local control, the risk of distant metastases is less known.

Objective: To compare the risk of distant metastases between patients who achieve a clinical complete response (watch-and-wait strategy) and subsequent local regrowth and patients managed by surgery after chemoradiation.

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Colorectal cancer is currently the third most frequently diagnosed type of cancer and the second cause of cancer death in the western world. Inflammatory bowel disease patients are 2-6 times more likely to develop CRC than the general population. Patients with CRC arising through Inflammatory Bowel Disease have an indication for surgery.

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