title: Histochemical detection and comparison of apoptotic cells in the gingival epithelium using hematoxylin and eosin and methyl green-pyronin: A pilot study.
abstract: BACKGROUND
  Apoptosis plays a critical role in the regulation of inflammation and host immune response. It helps in tissue homeostasis and a disturbance in this is often associated with disease. The use of histochemical stains like hematoxylin and eosin (H and E) and methyl green-pyronin (MGP) can provide a simple and cost-effective method for the detection of apoptotic cells.
  
  
  OBJECTIVE
  Study intended to analyze the expression of apoptosis in the gingival epithelium of healthy subjects and in patients with chronic periodontitis, using H and E and MGP. It is also proposed to correlate the apoptotic index (AI) of healthy individuals and those with chronic periodontitis.
  
  
  METHODS
  Twenty gingival biopsies were harvested from which ten samples were of healthy subjects and ten subjects who suffered from chronic periodontitis. Apoptotic cells were analyzed using MGP and H and E under light microscopy.
  
  
  RESULTS
  Apoptotic cells were identified at ×100 magnification and AI was calculated. Apoptotic cells were easily distinguishable in MGP stained sections when compared to those stained using H and E. Moreover, apoptotic cell count was higher in chronic periodontitis. Statistical analyses were done by Tukey's multiple post hoc procedure.
  
  
  CONCLUSIONS
  The study reveals that MGP staining can be used in a routine basic laboratory set up as one of the cost-effective methods for the detection of apoptotic cells.
authors: Department of Periodontology, Maratha Mandal's NGH Institute of Dental Science and Research Centre, Belgaum, Karnataka, India.
authors: Aarati
authors: A
authors: Nayak
authors: Department of Periodontology, Maratha Mandal's NGH Institute of Dental Science and Research Centre, Belgaum, Karnataka, India.
authors: Anita
authors: A
authors: Raikar
authors: Department of Oral Pathology and Microbiology, Maratha Mandal's NGH Institute of Dental Science and Research Centre, Belgaum, Karnataka, India.
authors: Vijaylaxmi
authors: V
authors: Kotrashetti
authors: Department of Oral Pathology and Microbiology, Maratha Mandal's NGH Institute of Dental Science and Research Centre, Belgaum, Karnataka, India.
authors: Ramakant
authors: R
authors: Nayak
authors: Department of Oral Pathology and Microbiology, Maratha Mandal's NGH Institute of Dental Science and Research Centre, Belgaum, Karnataka, India.
authors: Sumedha
authors: S
authors: Shree
authors: Department of Periodontology, Maratha Mandal's NGH Institute of Dental Science and Research Centre, Belgaum, Karnataka, India.
authors: Soumya
authors: S
authors: Kambali
keywords: Apoptosis; chronic periodontitis; gingival