L-Theanine alleviates the neuropathological changes induced by PCB (Aroclor 1254) via inhibiting upregulation of inflammatory cytokines and oxidative stress in rat brain.

The present study is aimed at evaluating the protective role of L-theanine on aroclor 1254-induced oxidative stress in rat brain. Intraperitoneal administration of Aroclor 1254 (2 mg/kg b.wt.

Seroprevalence of certain bacterial and viral infections among the Irula tribal population of Marakkanam, Tamil Nadu state, India.

Aim: Seroprevalence study in Irula tribe of Marakkanam, Tamil Nadu State was carried out for certain bacterial (typhoid, syphilis and leptospirosis) and viral infection (hanta, hepatitis B and human immunodeficiency virus (HIV)).

Result: Highest seroprevalence was observed for leptospirosis (61.1%) followed by, hepatitis B virus surface antigen (11.

Evaluation of working length determination methods: an in vivo / ex vivo study.

This comparative study was done to determine the accuracy in measuring the working length of root canal using tactile method, electronic apex locator and radiographic method, in vivo and comparing the lengths so measured to the actual working length, ex vivo, after extraction. Thirty single-rooted teeth scheduled for extraction were selected for the study. After obtaining the consent from patients, a preoperative radiograph was taken and access opening was done.

Efficacy of ultrasound and color power Doppler as a monitoring tool in the healing of endodontic periapical lesions.

This study determined the efficacy of high-resolution ultrasound and color power Doppler as a monitoring tool in the healing of periapical lesions. Five patients with a periapical lesion in the maxillary anterior teeth were chosen for this study. A preoperative ultrasound with color power Doppler was done to analyze the features of the periapical lesion.