Analysis of distribution and localization of proteins of the reelin signalling pathway in mesial temporal lobe epilepsy.

INTRODUCTION: Granule cell dispersion (GCD) is pathognomonic of hippocampal sclerosis seen in the mesial temporal lobe epilepsy (MTLE). Current animal studies indicate deficiency of Reelin is associated with abnormal granule cell migration leading to GCD. The present study aimed to evaluate complete Reelin signalling pathway to assess whether Reelin deficiency is related to MTLE. MATERIALS AND METHODS: Hippocampal sclerosis was confirmed by H and E stain. To explore the amount and cellular location of the Reelin cascade molecules, the hippocampal tissues from MTLE surgery and controls (n = 15 each) were studied using Immuno-histochemistry (IHC). Additionally, confocal imaging was used to validate the IHC findings by co-localization of different proteins. Quantification of IHC images was performed using histo-score and confocal images by Image J software. RESULTS: Immune expression of active Reelin was significantly reduced in patients. Reelin receptors were deranged, apolipoprotein E receptor 2 was increased while very low-density lipoprotein receptor was reduced. Disabled-1, a downstream molecule was significantly reduced in MTLE. Its ultimate target, cofilin was thus disinhibited and expressed more in MTLE. Reelin cleaving protease, matrix metalloprotease-9 (MMP-9) and MMP-9 inhibitor, tissue inhibitor of matrix protease-1, showed reduced expression in extracellular matrix. Semi-quantification of immunohistochemistry was done using Histo (H) score. H score of Reelin in diseased patients was 15 against 125 for control patients. These results were validated by confocal fluorescence microscopy. CONCLUSIONS: Reelin signalling cascade was deranged in chronic MTLE. Pharmacological manipulation of Reelin cascade can be done at various levels and it may provide novel treatment options for MTLE.

Clinicopathological Aspects of Death due to Wild Mushroom Poisoning: An Autopsy Report.

Mushrooms are widely cultivated and used as a source of diet and commerce; however, unfortunately, some wild mushrooms are highly toxic to humans. Although the poisonous mushrooms have a characteristic physical appearance, sometimes it is difficult to differentiate between the poisonous and nonpoisonous variety even by the experts. We report a case of a 23-year-old married female who mistakenly harvested and consumed wild mushrooms along with her family members and subsequently died on the 5th-day postingestion. Due to the medicolegal implications, a forensic autopsy was conducted in this case. Here, we discuss clinical findings along with detailed autopsy findings of this case, including histopathology examination.

Linearization of the relationship between serum sodium, potassium concentration, their ratio and time since death in Chandigarh zone of north-west India.

A strong relationship was established between the ratio of postmortem serum sodium and potassium concentrations and time since death by Querido in wistar rats. Henceforth, the present study was carried out to substantiate this inclination in humans. Flame photometric estimation of sodium and potassium concentration in postmortem blood of 474 subjects revealed a highly significant relationship between logarithm serum sodium as well as potassium concentration, logarithm of their ratio and the logarithim of the time since death during the first 3-58 h of death. Nonetheless, postmortem interval can be predicted from alteration in postmortem serum sodium, potassium concentration and from their ratio with S.E. estimate of 3.2, 5.7 and 4.6 h, respectively but environmental temperature and cause of death modulate these changes significantly.