Role of Helicobacter pylori Protein HP986 in Chronic Inflammation and Apoptosis
Author Information
Author(s): Alvi Ayesha, Ansari Suhail A., Ehtesham Nasreen Z., Rizwan Mohammed, Devi Savita, Sechi Leonardo A., Qureshi Insaf A., Hasnain Seyed E., Ahmed Niyaz
Primary Institution: Institute of Life Sciences, University of Hyderabad
Hypothesis
What favors persistence of H. pylori in the gastric niches is not clearly understood.
Conclusion
The study identifies HP986 as a potential virulence factor that induces proinflammatory and apoptotic responses in macrophages, contributing to chronic H. pylori infection.
Supporting Evidence
- HP986 was found in over 61% of clinical isolates associated with peptic ulcer and gastric carcinoma.
- Significant humoral immune responses were observed in H. pylori infected patients compared to healthy controls.
- rHP986 induced significant levels of TNF-α and IL-8 in cultured human macrophages.
Takeaway
The HP986 protein from H. pylori can make our immune cells angry and cause them to die, which helps the bacteria stick around and make us sick.
Methodology
The study involved screening clinical isolates for the presence of HP986, expression and purification of recombinant HP986, and analysis of its effects on cytokine production and apoptosis in macrophages.
Potential Biases
Potential bias in the selection of clinical isolates and the interpretation of immune response data.
Limitations
The study does not explore the long-term effects of HP986 on gastric diseases or its interactions with other bacterial factors.
Participant Demographics
Patients with gastritis, peptic ulcers, and gastric cancer from various geographical regions.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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