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Immunohistochemistry is a widely available technique that is less challenging and can provide clinically meaningful results quickly and cost-efficiently in comparison with other techniques. In addition, immunohistochemistry allows for the evaluation of cellular localization of proteins in the context of tumor structure.
TEST BANK For Guyton and Hall Textbook of Medical Physiology, 14th Edition by...
immunohistochemistry cancer |IHC-PRS
1. Exploring
Immunohistochemistr
y in Cancer Research
Cancer affects millions of people worldwide. Immunohistochemistry has
emerged as an important diagnostic tool, allowing us to better
understand, diagnose, and treat various types of cancer.
2. Introduction to Immunohistochemistry
What is
Immunohistoche
mistry?
Immunohistochemistry is a
method of detecting
specific antigens in tissues
using antibodies labeled
with enzymes or
fluorescent tags.
Antibodies in
Cancer Research
Immunohistochemistry
helps detect cancer
biomarkers and diagnose
the disease much earlier
compared to traditional
methods.
Applications of
Immunohistoche
mistry
Immunohistochemistry has
transformed the approach
of clinical diagnosis in
cancer pathology, with
several potential
applications in research
and therapy.
3. The Role of Immunohistochemistry in
Cancer Diagnosis
Colorectal Cancer
Immunohistochemistry helps
differentiate between inherited
and sporadic forms of colon
cancer.
Lung Cancer
Effective diagnosis and
personalized treatment of non-
small cell lung cancer is
possible using
immunohistochemistry.
Breast Cancer
Immunohistochemistry is an
important tool for identifying
breast cancer biomarkers and
categorizing the cancer into
subtypes.
4. Types of Cancer Markers Detectable by
Immunohistochemistry
1 Epithelial Markers
Epithelial markers are used to detect
the origin of tumors in diagnostics and
are also used to predict patient
outcome.
2
Neural Markers
Neural markers play an important role
in differentiating between
neuroendocrine tumors and non-
neuroendocrine tumors. 3 Stromal/Inflammatory Markers
These markers are used to detect the
presence of the stromal component
and help in diagnosis and prognosis of
the disease.
5. Advantages of using
Immunohistochemistry in
Cancer Diagnosis
1 Highly Sensitive and
Specific
Immunohistochemistry provides
high sensitivity and specificity to
detect cancer biomarkers from
small tissue samples.
2 Early Diagnosis of the
Disease
Early detection of cancer using
immunohistochemistry can help
in better treatment options and
improve patient outcomes.
3 Improved Targeted Therapy
Immunohistochemistry markers help in the selection of effective targeted
therapy that can increase the survival rate of cancer patients.
6. Limitations of Immunohistochemistry
in Cancer Diagnosis
False Positives
Non-specific antibody binding
may produce false-positive
results, leading to incorrect
diagnosis and treatment.
Sample Collection
and Preservation
Collection, fixation, and
preservation of the tissue
samples is critical for
accurate
immunohistochemical
staining.
Interpretation
Interpretation of the results
requires trained personnel, as
the interpretation of
immunohistochemical results
is much more subjective than
normal histology.
7. Case studies of successful cancer
diagnosis using
Immunohistochemistry
Prostate cancer Immunohistochemistry helps to determine the
aggressiveness of prostate cancer and to
differentiate it from benign prostate tumors.
Elevated levels of the protein PTEN suggest
more aggressive prostate cancer and can help
drive treatment options.
Melanoma Immunohistochemistry can confirm a diagnosis
of melanoma in difficult cases and is useful in
determining the extent of spread of the tumor.
Liver cancer Immunohistochemistry is used to differentiate
hepatocellular carcinoma from other liver
cancers or metastases and to determine the
risk of recurrence.
8. Future of Immunohistochemistry in
Cancer Diagnosis and Treatment
1 Automation and Standardization
Immunohistochemistry utilizes a variety of manual procedures, which limits
reproducibility. Automation and Standardization of techniques and protocols can lead to
more reliable results and can help overcome technician-dependent variations.
2 Multiplex immunohistochemistry
Multiplex immunohistochemistry is the simultaneous detection of multiple markers, which
can amplify the interpretation of the data captured and improve the accuracy of results.
3 Immunotherapy
Immunotherapy uses the natural ability of the immune system to fight cancer. With the
help of immunohistochemistry, we can identify the optimal checkpoint inhibitors and help
guide patient treatment decisions.