Publications by authors named "Martin Tobi"

Unlabelled: Colorectal cancer (CRC) outcomes in terms of incidence and mortality are significantly worse in African Americans than other Americans. While differences in primary preventions for neoplasia (diet, obesity remediation, aspirin prophylaxis) are being elucidated, genetic mutations affecting premalignant lesions and immune response mechanisms may possibly also explain the increased incidence and mortality, particularly from right-sided disease.

Objective: Our team therefore examined colonic segments seeking to test the hypothesis that the immune response and somatic genetic profiles of the colonic anatomic segments may vary and thus account for variations in neoplasia risk among the various colonic segments revealing an antigenic relationship with precancerous lesions.

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The primary pre-neoplastic lesion of the lower esophagus in the vicinity of the gastroesophageal junction (GEJ) is any Barrett's esophageal lesions (BE), and esophageal neoplasia has increased in the US population with predispositions (Caucasian males, truncal obesity, age, and GERD). The responses to BE are endoscopic and screening cytologic programs with endoscopic ablation of various forms. The former have not been proven to be cost-effective and there are mixed results for eradication.

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Article Synopsis
  • A study was conducted to improve non-invasive detection methods for colorectal neoplasia, especially adenomas, by comparing a fecal test using a monoclonal antibody (Adnab-9) to the standard guaiac-based fecal occult blood test (gFOBT).
  • The results showed that the p87 immunohistochemistry test was significantly more sensitive than gFOBT for detecting adenomas and advanced adenomas, with odds ratios indicating its superior detection capabilities.
  • Additionally, findings suggested that urine tests for specific neoantigens may also provide useful information, particularly for advanced adenomas, making p87 fecal testing a promising tool for enhancing colonoscopy screening efforts.
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Background: We evaluated the phenotype of sporadic gastric cancer based on HP status and binding of a tumor risk marker monoclonal, Adnab-9.

Methods: We compared a familial GC kindred with an extremely aggressive phenotype to HP-positive (HP+) and -negative (HP-) sporadic gastric adenocarcinoma (GC) patients in the same community to determine if similar phenotypes exist. This might facilitate gene discovery to understand the pathogenesis of aggressive GC phenotypes, particularly with publications implicating immune-related gene-based signatures, and the development of techniques to gauge the stance of the innate immune system (InImS), such as the FERAD ratio (blood ferritin:fecal Adnab-9 binding OD-background binding).

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The phosphatidylinositol (PI3K)/AKT/mTOR axis represents an important therapeutic target to treat human cancers. A well-described downstream target of the PI3K pathway is the forkhead box O (FOXO) transcription factor family. FOXOs have been implicated in many cellular responses, including drug-induced resistance in cancer cells.

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Article Synopsis
  • The CONFIRM trial aimed to compare the effectiveness of annual fecal immunochemical tests (FIT) versus colonoscopies in reducing colorectal cancer mortality, enrolling over 50,000 veterans between May 2012 and December 2017.
  • The study analyzed participant demographics and examined reasons for those who chose not to participate, highlighting a mix of preferences for either colonoscopy or stool tests based on geographic and temporal factors.
  • Among the 50,126 participants recruited, there was a diverse representation, and the study also noted that 11,109 eligible individuals opted out of participation for various reasons, with insights gathered via case report forms.
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SARS-CoV-2 severity predictions are feasible, though individual susceptibility is not. The latter prediction allows for planning vaccination strategies and the quarantine of vulnerable targets. Ironically, the innate immune response (InImS) is both an antiviral defense and the potential cause of adverse immune outcomes.

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The consumption of alcohol has long been associated with the development of liver disease as well as cancers including colorectal cancer (CRC). Leading healthcare concerns include the prevalent use of alcohol and the high burden of CRC mortality. Many CRC deaths are attributed to the development of colorectal liver metastasis (CRLM) as the liver is the foremost site of CRC spread.

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The novel coronavirus pandemic of COVID-19 has emerged as a highly significant recent threat to global health with about 600,000,000 known infections and more than 6,450,000 deaths worldwide since its emergence in late 2019. COVID-19 symptoms are predominantly respiratory, with mortality largely related to pulmonary manifestations, but the virus also potentially infects all parts of the gastrointestinal tract with related symptoms and manifestations that affect patient treatment and outcome. COVID-19 can directly infect the gastrointestinal tract because of the presence of widespread angiotensin-converting enzyme 2 receptors in the stomach and small intestine that can cause local COVID-19 infection and associated inflammation.

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Background And Aims: It has been recently proposed to change the nomenclature of "chronic radiation proctitis" (CRP) to "radiation-associated vascular ectasia" on the basis that signs of inflammation are rarely observed. We herein present data supporting the idea that inflammation is a critical step that initiates the process that culminates in the characteristic changes of CRP.

Methods: In support of inflammation in the pathogenesis of CRP, we review the pertinent literature and publish our new results, including the role of amifostine treatment and proinflammatory factors (p38 MAP kinase, VEGF, and CEACAM1).

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The aberrant use of alcohol is a major factor in cancer progression and metastasis. Contributing mechanisms include the systemic effects of alcohol and the exchange of bioactive molecules between cancerous and non-cancerous cells along the brain-gut-liver axis. Such interplay leads to changes in molecular, cellular, and biological functions resulting in cancer progression.

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Colorectal cancer (CRC) is a common cause of cancer-related deaths largely due to CRC liver metastasis (CRLM). Identification of targetable mechanisms continues and includes investigations into the role of inflammatory pathways. Of interest, MAPK is aberrantly expressed in CRC patients, yet the activation status is not defined.

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Article Synopsis
  • - Alberta Health Services (AHS) has improved its psychosocial response and recovery methods by learning from past disasters in the province.
  • - The paper discusses the effects of disasters on mental health, common stress reactions, and the theoretical foundations that guide psychosocial recovery.
  • - AHS shares key successes and strategies that have been effective in coordinating support for mental health after disasters.
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Much has been written about hepatic metastasis and animal models abound. In terms of the human experience, progress in treating this final common pathway, a terminal event of many human malignancies has been relatively slow. The current thinking is that primary prevention is best served by early detection of cancer and eradication of early stage cancers by screening.

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Background: Rates of patient completion of fecal occult blood tests (FOBTs) are often low.

Objective: To examine whether financial incentives increase rates of FOBT completion.

Design: A 2-stage, parallel-design, pragmatic, cluster, randomized, controlled trial with clustering by clinic day (ClinicalTrials.

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Background And Aim: Sporadic pancreatic ductal adenocarcinoma (PDA) is a highly lethal cancer. No proven screening strategies are available and frequent cross-sectional imaging studies (CT/MRI) are impractical even in patients thought to be at higher risk than the general population. Few PDA biomarkers have been studied prospectively for screening.

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