We report results of the studies relating to the development of an efficient biosensor for non-invasive detection of CYFRA-21-1 cancer biomarker. We used a low dielectric constant material (nanostructured yttrium oxide, nY2O3) for the fabrication of the biosensing platform. The nY2O3 was synthesized via solvothermal process and functionalized using 3-aminopropyl triethoxy silane (APTES). Electrophoretic deposition (EPD) of the functionalized nanomaterial (APTES/nY2O3) onto an indium tin oxide (ITO)-coated glass electrode was conducted at a DC potential of 50 V for 60 s. The EDC-NHS chemistry was used for covalent immobilization of −COOH bearing monoclonal anti-CYFRA-21-1 onto −NH2 groups of APTES/nY2O3/ITO electrode. To avoid the non-specific interaction on the anti-CYFRA-21-1/APTES/nY2O3/ITO immunoelectrode, bovine serum albumin (BSA) was used. X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) were utilized for structural and morphological studies, whereas Fourier-transform infrared spectroscopy (FTIR) was used for the bonding analysis. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used for electrochemical characterization and response studies of fabricated electrodes. The fabricated immunosensor (BSA/anti-CYFRA-21-1/APTES/nY2O3/ITO) exhibited linearity in the range of 0.01–50 ng·mL−1, sensitivity of 226.0 Ω·mL·ng−1, and lower detection limit of 0.01·ng·mL−1. A reasonable correlation was observed between the results obtained using this biosensor and concentration of CYFRA-21-1 measured through ELISA (enzyme-linked immunosorbent assay) technique in salivary samples of oral cancer patients.

No abstract

Background COVID-19 pandemic has shown that the multisystem involvement in COVID-infected patients is beyond the usual clinical manifestations of other respiratory viral illnesses. This study aims to evaluate the upshots of COVID-19 in women with preeclampsia. Methodology This descriptive study was conducted in department of Obstetrics & Gynaecology at VMMC & Safdarjung Hospital (May-November 2020), wherein a retrospective review of the medical records of laboratory confirmed SARS CoV2positive pregnant women (as per ICMR), with preeclampsia (as defined by ACOG guidelines), was done in the dedicated COVID labour ward. Primary outcome was incidence of preeclampsia in SARS CoV2 positive gravid females. Secondary outcomes were socio-demographic and maternal characteristics, severity of COVID-19 and foeto-maternal outcome. Results During these 7 months, 38/302 (12.58%) SARS COV2-positive women presented with pre-eclampsia, either before or at the time of admission; amongst them 47.37% were primigravida. Severe preeclampsia was chronicled in 65.71% women. Around 20% women had severe COVID-19. All women with severe COVID19 required ICU stay, 5 requiring intubation. Three of these patients succumbed to their illness. Out of the 40 babies born to these women (including 2 twin pregnancies), 36.84% were premature deliveries. Seventeen (42.50%) babies had low birth weight. Although 82.50% were live births, five (12.50%) were intrauterine demise and 2 were early neonatal deaths. Conclusion Gravid women with preeclampsia infected with SARS CoV2 have comparative more severe illness, requiring more intensive care requirement and high maternal and neonatal morbidity.

No abstract

Parasitological investigation was conducted to assess the effects of various biotic factors viz. length, weight and age of host on the infection patterns of Filochona teleostei (Singh & Malik, 1992) in snow trout Schizothorax richardsonii (HAM.) from hill streams of Garhwal Himalayas. The statistical analysis was carried out to calculate infection incidence, mean worm burden, regression values and their significance. About 20% fishes (18% male and 22% female) were found infected with nematode parasites. Infection patterns of Filochona teleostei revealed a negative correlation (r= - 0.347 to - 0.734) with length, (r= - 0.499 to - 0.671) with weight and (r= - 0.576) with age of host fish. The age immunity and stronger host resistance developed by the larger fishes are the possible reasons for the decrease in infection in larger and older fishes.