Reproductive Immunology Lecture 9
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Questions and Answers

What is the main challenge in conducting research in reproductive immunology?

  • Limited understanding of NK cell analysis
  • Difficulty in recruiting controls for studies
  • Lack of funding for large trials
  • Poor study design and over-interpretation of results (correct)

What is a common issue in defining the 'patient' group in NK cell analysis studies?

  • Lack of clear definitions of RIF and RPL
  • Inadequate control groups
  • Heterogeneity of the group (correct)
  • Insufficient sample size

Why is NK cell analysis in reproductive medicine considered both a 'marketing dream' and an 'academic nightmare'?

  • Because it is a new and untested area of research
  • Because it is only used in IVF treatment
  • Because it is a complex and poorly understood area of research
  • Because it has high commercial potential but lacks scientific rigor (correct)

What is a major limitation in NK cell analysis studies?

<p>Limited understanding of the pathological mechanisms (C)</p> Signup and view all the answers

What should clinicians consider when interpreting NK cell analysis results?

<p>The complexities of laboratory methods used (A)</p> Signup and view all the answers

Why are controls difficult to recruit and define in NK cell analysis studies?

<p>Because they are difficult to define and recruit (C)</p> Signup and view all the answers

What is a major challenge in immunological testing related to natural killer cells?

<p>A lack of consensus on referral ranges (C)</p> Signup and view all the answers

What is the primary method used to assess uNK cells?

<p>Immunohistochemistry (B)</p> Signup and view all the answers

What is a limitation of counting CD56+ cells in uNK cell analysis?

<p>It does not provide information on subtype or level of activation (C)</p> Signup and view all the answers

Why is it challenging to develop a reliable method of counting uNK cells in endometrium?

<p>Because endometrium is a complex glandular histological structure (A)</p> Signup and view all the answers

Why is it important to consider the day of the cycle when interpreting uNK cell levels?

<p>Because uNK cell levels vary enormously on a daily basis (C)</p> Signup and view all the answers

What is a criticism of using pNK cells as a surrogate for uNK cells?

<p>pNK cells are mainly of different phenotype to the majority of uNK cells (B)</p> Signup and view all the answers

What is the main advantage of Immunohistochemistry (IHC) over traditional tissue staining techniques?

<p>It is a more sensitive and specific method for identifying immune cells (A)</p> Signup and view all the answers

What is a major limitation of using flow cytometry to isolate uNK cells?

<p>Cell selection is not 100% pure due to mixing with other cell types (C)</p> Signup and view all the answers

What is a characteristic feature of RPL endometrium?

<p>The accumulation of uNK cells under the luminal epithelium (A)</p> Signup and view all the answers

Why is IHC preferred over flow cytometry for studying uNK cells?

<p>IHC does not require enzymatic processing of endometrial tissue (D)</p> Signup and view all the answers

What is a disadvantage of using flow cytometry for immunophenotyping?

<p>Many important informations about the antigenic structure and localization of immune cells are lost (D)</p> Signup and view all the answers

What is a limitation of using large endometrial specimens for flow cytometry?

<p>It requires immediate enzymatic processing (A)</p> Signup and view all the answers

What percentage of uNK and pNK cells are of different phenotype?

<p>90% (A)</p> Signup and view all the answers

What is a limitation of endometrial biopsy?

<p>It is a painful and invasive procedure (D)</p> Signup and view all the answers

What may pNK cell activity represent?

<p>A marker for immunological disorder (D)</p> Signup and view all the answers

What can affect the results of pNK cell analysis?

<p>Several factors including venepuncture conditions, transport to the lab, and protocols for preparation and labelling (C)</p> Signup and view all the answers

What is the corrected range for pNK cells in females?

<p>5-20% (B)</p> Signup and view all the answers

What is one of the methods used for the analysis of pNK cells?

<p>Flow Cytometry (C)</p> Signup and view all the answers

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