ABSTRACT
Background: Colorectal cancer (CRC) is the third most common cancer worldwide. “Tumor budding,” defined by the presence of five or less tumor cell cluster in the invasive front of tumor, is a strong, reproducible, and independent prognostic marker of the biological aggressiveness of the tumor. Aim and Objective: The present study was conducted to assess the correlation of clinicopathological parameter with tumor budding in CRC. Materials and Methods: Sixty patients presenting with colectomy specimens with known histological diagnosis of colorectal adenocarcinoma were included in the study. Histological examination with hematoxylene and eosin stain and immunohistochemistry with pancytokeratin (Pan-CK) was performed in equivocal cases. Tumor budding was counted and scored as per international tumor budding consensus conference, 2016, recommended criteria. Tumor budding was correlated with other relevant clinicopathological parameters. Results: The age distribution ranged from 19 to 78 years with a peak incidence in the age group of 41–50 years (31.7%). Low-grade tumor budding was seen in 20%, intermediate grade budding in 16.7%, and high-grade tumor budding in 63.3%. No correlation could be established between age, sex, site, size of tumor, lymphovascular invasion, histological grade, and budding intensity. However, association between tumor budding and nodal involvement, perineural invasion and higher American Joint Committee on Cancer stage has been found to be statistically significant in this study. Conclusions: Tumor budding is emerging to be a promising and powerful predictor of nodal metastasis and a higher stage of the tumor. Immunohistochemistry with Pan-CK can aid in the grading of tumor budding and buid consensus.
ABSTRACT
Dead and damaged spermatozoa cells present universally in the ejaculates of all eutherian mammals exert toxic effect on contemporary healthy cells mostly through generation of excessive free radicals. This is much more evident during extended period of processing, resulting in poor ejaculate quality. The solution lies in depletion of dead/damaged spermatozoa from the neat ejaculates itself. Thus the objective of the study was to evaluate the efficiency of the protocols such as discontinuous PercollTM density gradient centrifugation (PDGC) and glass wool filtration (GWF) for depletion of dead/damaged spermatozoa from fresh semen in buffalo. Random ejaculates (n=6) of Murrah buffalo bulls were divided into two aliquots after quality assessment: PDGC and GWF protocols (Group I and II, respectively). At the end of the purification protocol, efficiency of the protocols in depleting dead/damaged spermatozoa as reflected by certain quality parameters were evaluated. The mean efficiency (%) of purification protocols based on recovery of spermatozoa was 44.68 and 40.02% for PDGC and GWF, respectively. Moreover significantly (p<0.05) greater values for quality parameters was observed in the Group II (26.4+6.8 vs 68.8+4.4 for acrosome integrity (%); 12.68+6.6 vs 57.7+7.5 for functional plasma membrane integrity (%); 20.3+5.8 vs 80.75+6.7 for viability (%) in Group I and II, respectively). It was concluded that GWF is a better technique than PGDC to filter out dead/damaged spermatozoa from fresh semen with improvement in semen quality and can be a valuable tool in assisted reproductive technology
ABSTRACT
Background & objectives: Different formulations of Bacillus thuringiensis var. israelensis (Bti) have been tested against different mosquito vectors and other insects for their residual activity. In the present study, the efficacy and residual activity of a new formulation of Bti (Bactivec Suspension Concentrate) were evaluated against immature stages of Anopheles stephensi Liston (Diptera: Culicidae), Aedes aegypti Linnaeus (Diptera: Culicidae) and Culex quinquefasciatus Say (Diptera: Culicidae), in natural habitats in Phase II and Phase III in Bengaluru, India. Methods: Preferential breeding habitats of the mosquito species were selected and four dosages (0.25, 0.5, 1 and 2 ml/50 l) were tested in Phase II trial. Two most effective dosages, 0.5 and 1 ml/50 l were selected for Phase III trial. The evaluation was carried out essentially following the guidelines of the World Health Organization Pesticide Evaluation Scheme. Pre-treatment and post-treatment densities were recorded at regular intervals, and >80 per cent reduction in pupae was taken as the duration of effectiveness. Results: Bactivec SC treated at the dosage of 1 ml/50 l could produce 10-17 days efficacy (>80% reduction in pupae) in clean water habitats tested, whereas 0.5 ml/50 l dosage showed residual activity from 7 to 14 days against Ae. aegypti and An. stephensi in Phase III studies. In polluted water habitats, 4-7 days efficacy could be recorded against Cx. quinquefasciatus in Phase III. Interpretation & conclusions: The Bactivec SC formulation was operationally feasible and easy to handle. For the control of Anopheles and Aedes mosquitoes in freshwater habitats, 1 ml/50 l dosage was found effective, whereas in polluted water habitats against Cx. quinquefasciatus 5 ml/m2 was found effective.
ABSTRACT
Background: An accurate estimation of foetal gestation age is of utmost clinical significance owing to its vast clinical implications principally in management of high risk pregnancies. Aim: To determine correlation and regression coefficient of foetal kidney length as a parameter for gestational age and to do its comparative evaluation with other foetal biometric indices. Materials and methods: A Prospective observational study was conducted on 200 women aged between 18 to 35 years with normal singleton pregnancies, over a duration of six months from December 2015 to May 2016. Gestational age and fetal kidney length was determined using Ultrasound machine PHILIPS HD7 (2.0.1) with 3- 5 MHz curvilinear transducer. Statistical analysis was done using tests of correlation and simple linear regression. All analysis was done by using IBM SSPS statistics 24and MS excel. Results: Pearson’s correlation coefficient value of 0.99 and regression coefficient or slope 1.0 noted between gestational age and fetal kidney length with a significance P< 0.001. Bardhan J, Ghosh SK, Sarkar KN, Sarkar M. Fetal kidney length as a parameter for gestational age determination and its comparative evaluation with other fetal biometric indices. IAIM, 2016; 3(8): 36-44. Page 37 Conclusions: Fetal kidney length shows a positive correlation with fetal gestational age, with a linear growth rate throughout pregnancy irrespective of underlying medical condition like intrauterine growth retardation. This study shall prove its worth in cases of engaged fetal head, where it is difficult to measure fetal bi parietal diameter and head circumference as well as in cases of intrauterine growth retardation, macrosomia and malformation where abdominal circumference measurement gives false values.