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Gabapentin is a new gamma aminobutyric acid (GABA) analogue that has anticonvulsant activity. Preliminary results are promising with gabapentin for the treatment of refractory anxiety disorders. In a supplementary role in several behavioral disorders, especially in acute mania, it has produced significant beneficial results. In this study, the anxiolytic activity of gabapentin was examined in mice. There was a significant decrease in time spent in the central square, an increase in the crossings, and an increase in rearing in the open field with the low-dose gabapentin (10 and 30 mg/kg), implying anxiolysis. Furthermore, potentiation of diazepam with gabapentin was also reported. On screening the gabapentin for learning and memory with passive avoidance response, there was significant prolongation of step-down latency, decrease in step-down error, and decrease in the total time spent by the mice in the shock zone at 10 and 100 mg/kg of gabapentin. Gabapentin was not associated with any adverse effect on the memory of mice.The lack of effect of gabapentin on memory, exhibiting anxiolytic activity at a low dose, the lack of cognition deficits, lack of drug interaction, alleviating the requirement for plasma monitoring, and its freedom from dependence or abuse liability suggest the potential advantage of gabapentin over the exiting anxiolytics. [ABSTRACT FROM AUTHOR]

Benign positional vertigo (BPV) occurs when freely floating otoconia which are normally attached to the utricular macula, enter the posterior semicircular canal and move under the influence of gravity. It is the most common cause of peripheral vertigo. Migraine is a common headache disorder which is characterized by hemicranial, throbbing pain and may be preceded by aura. The relation between vertigo and migraine is intriguing and in day to day practice, often not clear. 100 diagnosed patients of BPV, aged more than 20 years, were evaluated for presence of headache specifically migraine based on International Headache Classification 3rd Edition, beta version. We also compared the success of epley's manoeuvre in patients having BPV & headache as compared to patients with complaints of vertigo alone. Overall seventy-four patients had successful epley's manoeuver and the rest did not show improvement even after four trials. Thirty-four patients reported headache and migraine was diagnosed in only ten patients. 67.6% of patients with headache had successful epley's maneuver however fifty-one of the 66 patients without headache had successful epley's manoeuver. Prevalence of migraine was only 10% in patients with BPV in our population and we observed that presence of headache does not suggest success or failure of epley's manoeuvre., Competing Interests: Conflict of interestNil., (© Association of Otolaryngologists of India 2020.)

Lactic acid bacteria (LAB) isolates possessed functional probiotic attributes, such as high hydrophobicity and autoaggregation ability, coaggregation capability with bacterial pathogens, antimicrobial activity, antioxidant potential, and hypocholesterolemic effects. Selected potential probiotic LAB, i.e. Lactobacillus paracasei M3, L. casei M5, L. paracasei M7, and few others were studied for their ability to lower cholesterol using a number of methods viz. cholesterol assimilation, bile salt deconjugation, cholesterol co-precipitation, cholesterol adhesion to probiotic cell wall, and miceller sequestration of cholesterol. L. casei M5 showed maximum bile salt hydrolase (BSH) activity, and released 57.63 nmol of glycine/min, and was closely followed by LAB isolate M9 which generated 52.12 nmol of glycine/min. Sodium glycocholate was deconjugated by L. casei M5 to produce 27.77 μmol/mL of cholic acid, while other isolates produced 20-26 μmol/mL of cholic acid. Cholesterol was assimilated significantly by isolate M6 (82.15%) and L. casei M5 (76.51%). L. casei M5 showed higher cholesterol co-precipitation ability (50.16 μg/mL) as compared to other LAB isolates (33-44 μg/mL). Miceller cholesterol concentration was reduced maximally by LAB isolate M8 (87.5%), followed by isolates M5 (84.75%), M9 (84%), M10 (80%), and M37 (79%). Higher cell wall adhesion of cholesterol was realized by L. casei M5 (42.48 μg/mL) than other LAB isolates (30-40 μg/mL). Selected LAB probiotics demonstrated short chain fatty acid (acetate, propionate, and butyrate) producing ability, yet another way of probiotics-mediated cholesterol lowering., Competing Interests: Conflict of interestAll authors declare that there is no conflict of interest., (© King Abdulaziz City for Science and Technology 2020.)

Background: Visual misperceptions (VMs) and hallucinations (VHs) often go unreported in patients with Parkinson's disease (PD). We assessed the utility of single and bistable visual percepts as testing tools for visual perceptual abnormalities in PD., Aim: To assess VM in patients with PD using single and bistable percepts as testing tools., Settings and Design: This was a case-control study conducted at a movement disorders clinic., Materials and Methods: Thirty patients with PD and 30 age and sex-matched controls were assessed for motor severity and stage using Unified Parkinson's Disease Rating Scale-III (UPDRS-III) and modified Hoehn and Yahr scale. Higher mental functions were assessed by Mini-Mental State Examination (MMSE), Frontal Assessment Battery (FAB), and Trail making tests (TMT-A and B) scores. The participants were presented with monochromatic images representing either "single" or "bistable percepts" and the misperceptions were recorded. VM scores of patients and controls were compared. The correlation between disease duration, treatment period, motor severity, frontal executive functions, and VMs were determined., Results: Twenty-six patients had mild-to-moderate PD. Patients with PD had higher mean VM scores (P < 0.0005). None of the patients reported VHs. TMT-A, TMT-B, TMT-B - A scores were significantly lower in the control group (P < 0.0005). Cases showed significant positive correlation of VM with disease duration, treatment duration, UPDRS-III score, H and Y stage, and TMT A and B and an inverse correlation with MMSE and FAB scores. The patients with VM score greater than the upper limit of normal (Mean + 1.5 standard deviation [SD]), calculated from the control group, showed similar correlation of VM with motor and cognitive parameters., Conclusions: VMs are frequent in patients with PD when assessed using single and bistable visual percepts. VM correlates with frontal executive dysfunction, disease duration, and severity., Competing Interests: None

Background: Both depression and low serum levels of folate are common in people with epilepsy (PWE), the latter especially in patients on hepatic enzyme-inducing antiepileptic drugs (AEDs). We did a cross-sectional study and a meta-analysis to assess if lower folate levels have any relation with depression in PWE., Materials and Methods: Two hundred and one PWE were recruited and assessed for depression using the Inventory of Depressive Symptomatology-Self-Rated (IDS-SR) and Inventory of Depressive Symptomatology-Clinician Rated; serum folate levels were measured in them at the same time. Literature search was carried out and studies with data on depression as well as folate levels in PWE were included. Statistical analysis to determine frequency of depression, low folate levels, and relation between them among our cases and the pooled data from the included studies was done., Results: Depression was observed in 65.68% and low serum folate (<4 ng/ml) in 48.75% of PWE (over 80% on older AEDs); there was no statistically significant correlation between them. However, on analyzing the pooled data of six studies including the present, the Fisher's z -transformed correlation coefficient was -0.1690 (95% confidence interval [-0.3175, -0.0124], P = 0.0464)., Conclusions: Depression and low folate levels are common in PWE. Low folate levels have a mild but significant negative correlation with depression in this population, and folate supplementation would be advisable for those on the older AEDs., Competing Interests: There are no conflicts of interest.

Intravascular thrombosis is one of the major causes of variety of cardiovascular disorders leading to high mortality worldwide. Fibrinolytic enzymes from microbial sources possess ability to dissolve these clots and help to circumvent these problems in more efficient and safer way. In the present study, fibrinolytic protease with higher fibrinolytic activity than plasmin was obtained from Serratia sp. KG-2-1 isolated from garbage dump soil. Response surface methodology was used to study the interactive effect of concentration of maltose, yeast extract + peptone (1:1), incubation time, and pH on enzyme production and biomass. Maximum enzyme production was achieved at 33 °C after 24 h at neutral pH in media containing 1.5% Maltose, 4.0% yeast extract + peptone and other trace elements resulting in 1.82 folds increased production. The enzyme was purified from crude extract using ammonium sulfate precipitation and DEAE-Sephadex chromatography resulting in 12.9 fold purification with 14.9% yield. The purified enzyme belongs to metalloprotease class and had optimal activity in conditions similar to physiological environment with temperature optima of 40 °C and pH optima of 8. The enzyme was found to be stable in various solvents and its activity was enhanced in presence of Na + , K + , Ba 2+ , Cu 2+ , Mn 2+ , Hg 2+ but inhibited by Ca 2+ and Fe 3+ . Hence, the obtained enzyme may be used as potential therapeutic agent in combating various thrombolytic disorders.

Eight thermophilic bacterial strains were isolated from Tattapani Hot spring and screened for various hydrolytic enzymes including cellulases. The isolated bacterial strains were identified as Geobacillus thermodenitrificans IP&#95;WH1(KP842609), Bacillus licheniformis IP&#95;WH2(KP842610), B. aerius IP&#95;WH3(KP842611), B. licheniformis IP&#95;WH4(KP842612), B. licheniformis IP&#95;60Y(KP842613), G. thermodenitrificans IP&#95;60A1(KP842614), Geobacillus sp. IP&#95;60A2(KP842615) and Geobacillus sp. IP&#95;80TP(KP842616) after 16S ribotying. Out of the eight isolates Geobacillus sp. IP&#95;80TP grew best at 80 °C whereas rest of the isolates showed optimal growth at 60 °C. G. thermodenitrificans IP&#95;WH1 produced a thermotolerant cellulase with maximum activity at 60 °C.

Background: The understanding and management of neurological disorders is undergoing revolutionary changes over the last three decades in the background of ever increasing advances in medical technologies, diagnostic techniques, therapeutic processes and, molecular and genetic medicine. The fruits of these advances can reach patients only if the psychosocial hurdles in their delivery are identified, acknowledged and addressed., Aim: To explore the beliefs and practices of patients with neurological disorders in a tertiary care center in the eastern Nepal., Materials and Methods: One hundred patients attending neurology/medicine outpatient for neurological disorders were interviewed about their beliefs regarding the triggering factors, causation and treatment-seeking behavior particularly from traditional healers., Result: Of the 100 patients (49 males, 51 females) recruited in the study, 51% expressed having 'no idea' about their illness. Only 20% patients gave medically congruent explanation for their illness. Psychological factors were attributed as triggering factors by 16% of patients, of which two-thirds were females. Chance, destiny and 'jadu tona' topped the list of triggering factors. Forty-four percent patients had sought help of traditional faith healers ('Dhami Jhakri') before seeking medical help. Traditional faith healers were approached by patients irrespective of their educational background. Fifty-nine percent of patients who first sought traditional faith healers, believed in 'jadu-tona'. Of those interviewed, 16% were planning to go to a faith healer in near future., Conclusion: The beliefs of patients with neurological disorders frequently do not conform to current medical opinion. There is need for greater communication and education of patients by their treating physicians.

An alkalitolerant fungus, Aspergillus fumigatus strain MA28 produced significant amounts of cellulase-free xylanase when grown on a variety of agro-wastes. Wheat bran as the sole carbon source supported higher xylanase production (8,450 U/L) than xylan (7,500 U/L). Soybean meal was observed to be the best nitrogen source for xylanase production (9,000 U/L). Optimum medium pH for xylanase production was 8 (9,800 U/L), though, significant quantities of the enzyme was also produced at pH 7 (8,500 U/L), 9 (8,200 U/L) and 10 (4,600 U/L). The xylanase was purified by ammonium sulphate precipitation and carboxymethyl cellulose chromatography, and was found to have a molecular weight of 14.4 kDa with a V(max) of 980 μmol/min/mg of protein and a K(m) of approximately 4.9 mg/mL. The optimum temperature and pH for enzyme activity was 50 °C and pH 8, respectively. However, the enzyme also showed substantial residual activity at 60-70 °C (53-75%) and at alkaline pH 8-9 (56-88%).

Thermostable and alkalitolerant xylanases have got intense research focus due to their vast applications in various industries including pulp and paper, food, feed, textile, biofuel, etc. In the present investigation, a Penicillum sp. SS1 isolated from degrading woody material was found to produce moderately thermoactive and alkalistable endo-β-1,4-xylanase (xylanase). Maximum xylanase production was observed after fourth day of fermentation (43.84 IU/ml). The organism produced substantial quantities of xylanase using agricultural residues like wheat bran (20.6 IU/ml), rice bran (21.8 IU/ml) and sawdust (10.7 IU/ml) as carbon sources. The enzyme preparation was totally free of filter paper activity (FPase) and possessed negligible carboxymethyl cellulase (CMCase) activity; this could be an important feature of enzyme if the intended application of enzyme is in pulp and paper industries. Among nitrogen sources examined, yeast extract supported maximum xylanase production (45.74 IU/ml), and was followed by soybean meal (22.2 IU/ml) and ammonium sulphate (20 IU/ml). Maximum xylanase production was observed at initial medium pH 9 (25.6 IU/ml); however, at pH 8 and 10 also significantly high enzyme titre was observed (24 and 21.2 IU/ml, respectively). Thus, Penicillium sp. SS1 displayed capability of growing and producing xylanase at high alkaline pH (8-10). Maximum xylanase activity was reported at 50 °C, however, significantly high activity was observed at 60 °C (65.4%), however, at 70-80 °C activity was lost considerably. At 50-60 °C the enzyme retained very high activity up to 30-60 min (91-100%), however, prolonged incubation (90 min) caused considerable activity reduction (residual activity 63-68%).

Saccharomyces cerevisiae HAU-1, a time tested industrial yeast possesses most of the desirable fermentation characteristics like fast growth and fermentation rate, osmotolerance, high ethanol tolerance, ability to ferment molasses, and to ferment at elevated temperatures etc. However, this yeast was found to be sensitive against the killer strains of Saccharomyces cerevisiae. In the present study, killer trait was introduced into Saccharomyces cerevisiae HAU-1 by protoplast fusion with Saccharomyces cerevisiae MTCC 475, a killer strain. The resultant fusants were characterized for desirable fermentation characteristics. All the technologically important characteristics of distillery yeast Saccharomyces cerevisiae HAU-1 were retained in the fusants, and in addition the killer trait was also introduced into them. Further, the killer activity was found to be stably maintained during hostile conditions of ethanol fermentations in dextrose or molasses, and even during biomass recycling.

Introduction: This study was conducted to explore cardiovascular autonomic neuropathy and its pattern in chronic kidney disease patients., Methods: Autonomic function using five standard tests was examined in 20 diabetic patients with CKD, 20 age and sex matched diabetic patients without CKD and 20 age and sex matched controls. Analysis of difference between the autonomic function was done in the three groups using Chi-square test or Fischer's test., Results: Total 20 (100%) diabetic CKD patients were found to have autonomic neuropathy. Of these, 2 (10%) patients had early parasympathetic damage, 8 (40%) patients had definite parasympathetic damage, and 10 (50%) patients had combined damage. Heart rate response to standing was statistically significant (p = 0.014) among diabetic CKD patients when compared with diabetic patients without CKD. Combined form of autonomic dysfunction was more frequent in advanced stages of diabetic CKD. Three (42.85%) patients in stage 3 CKD, 4 (66.66%) patients in stage 4 CKD and 5 (71.42%) patients in stage 5 CKD, had combined autonomic failure., Conclusions: Autonomic neuropathy is common in native Nepalese diabetic CKD patients. Heart rate response to standing is significantly abnormal in diabetic CKD patients in comparison with diabetes mellitus patient without CKD. Severity of autonomic dysfunction increases with severity of CKD..

Creutzfeldt-Jakob disease (CJD) is increasingly being reported over the last three decades as a result of heightened awareness of the disease. Various studies have reported annual incidence of 0.5-1.5 cases of CJD per million of general population. In India, the disease is still under reported. Over the period spanning from 1968-1997, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore recorded 69 cases of CJD from different parts of India in the CJD registry. This paper describes the clinical experience with cases of CJD managed at the Department of Neurology, G.B. Pant Hospital, New Delhi from 1990-1998. In this series, the mean age of the patients was 53.80 (+/- 7.32) years and there were 5 females and 5 males. Myoclonus was present in all the cases and abnormal behaviour with or without other features was the presenting complaint in 7 of the 10 patients, while one patient of CJD had cerebellar ataxia as the presenting feature. One patient with occipital variant of CJD presented with acute onset cortical blindness and myoclonic jerks. One of the patients had acute psychosis precipitated by emotional stress at the onset. Extrapyramidal features were noted in 7 of the 10 patients before death. The mean duration of symptoms from the onset of disease to death was 6.6 (+/- 6.11) months. Classical EEG changes were observed in all the patients, except in one possible case of occipital variant of CJD, where we did not have access to EEG record. Brain biopsy could be undertaken in 3 patients, and in 2 patients the features of subacute spongiform encephalopathy (SSE) were noted.