A study of comparison of liquid-based cytology versus conventional pap smear for evaluation of cervical cytology at a tertiary healthcare hospital

Background: Cervical cancer is the second highest cause of cancer-related mortality in women, and the only sign of this cancer in the early stages is the loss of abnormal cells. Clinical signs of the disease appear only after cancer has reached advanced stages. Conversely, this cancer in precancerous conditions is completely curable and screening with conventional Papanicolaou (CP) has reduced the mortality by 70% but it is also associated with a significant number of false-negative cases (20-50%). In 1996, liquid-based cytology (LBC) method was developed to overcome the disadvantages of the previous method expecting to have good features such as high sensitivity, faster sample preparation, and decreased the rate of inadequate smears.Methods: This descriptive-analytic study was conducted at the Department of Pathology and Department of Obstetrics and Gynaecology, government medical college, Datia for the period of 11 months from April 2018 to February 2019. The study includes total 80 subjects. Total No. of Pap smear examined (both LBC and CPS) are 160.Results: There were statistically significant differences of satisfactory/unsatisfactory rate, smear cellularity, background clarity and detection of endocervical cells, in between liquid based cytology and conventional Pap smear finding (p<0.05). Diagnostic efficacy i.e. sensitivity and specificity of LBC is greater than CPS for evaluation of cervical cytology.Conclusions: Results shows, that LBC may improve the sample's quality, reduce the number of unsatisfactory smear and increases the diagnostic efficacy

ISOLATION AND CHARACTERIZATION OF CELLULOSE-DEGRADING BACTERIA FROM DECOMPOSING PLANT MATTER

Objective: The green plant waste consists of a high amount of lignocellulosic materials offering intense environment for the growth of cellulolytic bacteria, which have ability to degrade plant biomass as a carbon source. This cellulase produced can be used to break down plant waste into valuable products such as monomeric sugars, biofuels, compost etc. Therefore, the aim of present study was to isolate and identify potent cellulose-degrading bacteria from decomposing plant matter and assessment of their cellulolytic activity. Methods: The cellulolytic bacteria were isolated by serial dilution technique on CMC agar media and six isolates were selected based on their cellulose hydrolysing ability.Based on the biochemical tests such as Oxidase test, Voges-Proskauer test, Methyl red test, Catalase test and sequence analysis of 16s rRNA genes. Results: The isolates were identified as Paenibacillus alvei, Paenibacillus lentimorbus, Bacillus subtilis, Bacillus nakamurai with percentage identity of 93.77%, 92.80%, 97.71% and 91.94% respectively, as obtained from NCBI BLAST. Among these Paenibacillus alvei showed the highest cellulase activity. Conclusion: The findings of this study could pave the way for the use of cellulose as an inexpensive energy source for bacteria that are capable of producing valuable products