Related Experiment Video
Updated: Apr 24, 2026

Isolation and Flow Cytometric Analysis of Immune Cells from the Ischemic Mouse Brain
Published on: February 12, 2016
Systemic infection and inflammation as trigger factors of ischemic stroke
Sukdeb Das1, Kartick Chandra Ghosh2, Satyabrata Pulai1
1Department of Medicine and.
Insights
Recent infections, particularly respiratory ones, are significant triggers for ischemic stroke, even in well-controlled patients. Early detection and treatment of infections may help reduce stroke incidence.
Area of Science:
- Neurology
- Infectious Diseases
- Cardiovascular Medicine
Background:
- Chronic risk factors for stroke and myocardial infarction are known, but stroke triggers require further evaluation.
- Previous research explored the link between preceding infection/inflammation and stroke onset.
Purpose of the Study:
- To better define stroke triggers and inform early intervention strategies.
- To investigate the role of infections as potential stroke triggers.
Main Methods:
- Retrospective analysis of 70 ischemic stroke patients and 80 controls.
- Standardized questionnaires assessed recent infections (within 14 days), health status, and medical history.
- Biochemical tests included high-sensitivity C-reactive protein (hs-CRP) and leukocyte count.
Main Results:
- Respiratory tract infection (RTI) was more common in stroke patients (48.5%) than controls (30%).
- Clinical and biochemical evidence (leukocytosis, elevated hs-CRP) supported infections like RTI and UTI as stroke triggers.
- Ischemic stroke can occur suddenly after recent infection, even in patients with controlled diabetes or hypertension.
Conclusions:
- Early treatment of febrile illnesses and adjustment of medications (antiplatelets, antibiotics) may reduce stroke incidence.
- Further large-scale, multicenter trials are needed to confirm stroke-prone states and preventive measures.
Background:
Chronic risk factors are well understood in cases of stroke as well as myocardial infarction. Till date, several triggers for stroke are still under evaluation. Researchers have previously evaluated the relationship between preceding infection and inflammation and stroke onset.
Purpose:
The purpose of study is to define the stroke triggers in a better way and to provide little more information for early intervention by controlling infections or other trigger factors.
Methods:
In this retrospective study, a standardized questionnaire was carried out to evaluate the signs, symptoms of preceding (<14 days) infection, physical/mental health, drug history, TIA etc. of 70 ischemic stroke patients and 80 non-stroke out-patient department patients as control groups. Important biochemical tests e.g. high sensitivity CRP, leukocytes count, blood sugar, lipid profile, etc. were also taken into consideration. Recent (15 days) prior infection, mainly respiratory tract infection and urinary tract infection, which were likely to be important stroke triggers, were compared between the ischemic stroke groups and the non-stroke patients (control group).
Results:
It was found that respiratory tract infection is the most common type of infection (48.5%) compared with the non-stroke control group (30%). Apart from this, there were clinical evidence of infections like gastroenteritis, RTI, UTI etc which were biochemically established by leukocytosis and increased high-sensitivity C-Reactive Protein levels, well-known early diagnostic tools that have good predictive value. This study reveals that well-controlled diabetic, hypertensive or non-diabetic normotensive patients can suddenly develop ischemic stroke following recent infection as evidenced by clinical features, increased levels of high-sensitivity CRP and leukocytosis.
Conclusion:
These diagnostic tools implicate the value of early treatment of febrile illness and introduction or adjustment of doses of antiplatelet agents, antibiotics, etc. to reduce the actual stroke incidence, though it needs multicentre large community based prospective trials to evaluate stroke prone state and effective preventive measures tools at the same time.
Related Concept Videos
Ischemic Stroke l: Introduction
Ischemic Stroke ll: Pathophysiology
Encephalitis ll: Pathophysiology
Hemorrhagic Stroke ll: Pathophysiology
Bacterial Meningitis II: Pathophysiology
Acute Inflammation II: Local and Systemic Effects

