This study aimed to assess the variability in respect of titer and properties of xylanase from Trichoderma reesei SAF3 under both solid-state and submerged fermentation. SSF was initially optimized with different agro-residues and among them wheat bran was found to be the best substrate that favored maximum xylanase production of 219 U (gws)(-1) at 96 h of incubation. The mycelial stage of the fungi and intracellular accumulation of Ca(++) and Mg(++) induced maximum enzyme synthesis. Inoculum level of 10 × 10(6) spores 5 g(-1) of dry solid substrate and water activity of 0.6 were found to be optimum for xylanase production under SSF. Further optimization was made using a Box-Behnken design under response surface methodology. The optimal cultivation conditions predicted from canonical analysis of this model were incubation time (A) = 96-99 h, inoculum concentration (B) = 10 × 10(6) spores 5 g(-1) of dry substrate, solid substrate concentration (C) = 10-12 g flask(-1), initial moisture level (D) = 10 mL flask(-1) (equivalent to a(w) = 0.55) and the level of xylanase was 299.7 U (gws)(-1). Subsequent verification of these levels agreed (97 % similar) with model predictions. Maximum amount of xylanase was recovered with water (6:1, v/w) and under shaking condition (125 rpm). Purified xylanase from SSF showed better stability in salt and pH, was catalytically and thermodynamically more efficient over enzyme from SmF, though molecular weight of both enzymes was identical (53.8 kDa).

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Using footwear often becomes troublesome and creates many problems. Most of these problems are associated with the wearing of ill-fitting footwear, as it leads to biomechanical imbalance and ultimately give rise to different foot problems. In the present investigation different foot problems, viz., discomfort, pain and other hazards related to the use of footwear have been evaluated and attempts have been made to study different foot dimensions of men and women that are related to the design of footwear. For the present study different foot dimensions of both right and left feet of the subjects were measured on 300 Bengalee (Indian) subjects having the age range of 20-35 years. The subjects reported that they had got discomfort, pain, blister and corn due to using different footwear. It was noted that the occurrence of these problems in right foot was greater than that in left foot. There was no significant correlation between foot troubles and type of footwear. Results also showed that there was no significant difference in most of the foot dimensions between left foot and right foot. However, significant difference (P < 0.001) in all foot dimensions was observed between male and female subjects. Correlation coefficient among different foot dimensions has also been evaluated and it was noted that foot length was highly correlated with stature and foot volume, particularly in left foot. Footwear should be made according to the foot dimensions of the user population. The database collected from the Bengalee (Indian) population may be a helpful guide for manufacturing different footwear.

Background:Trigeminal neuralgia is a commonly diagnosed neurosensory disease of head, neck and face region, involving 5th cranial nerve. Carbamazepine is the first line drug if there is decrease in efficacy or tolerability of medication, surgery needs to be considered. Factors such as pain relief, recurrence rates, morbidity and mortality rates should be taken in to account while considering which technique to use. Peripheral neurectomy is a safe and effective procedure for elderly patients and in rural and remote centers where neurosurgical facilities are not available. It is also effective in those patients who are reluctant for major neurosurgical procedures. Although loss of sensation along the branches of trigeminal nerve and recurrence rate are associated with peripheral neurectomy, we consider it as the safe and effective procedure in rural practice, which can be done under local anesthesia.Aims:The aim of this prospective study is to evaluate the long term efficacy of peripheral neurectomy with and without the placement of stainless steel screws in the foramina and to calculate the mean remission period after peripheral neurectomies for different branches of trigeminal nerve.Setting and Design:The sample was divided into 2 groups by selecting randomly the patients, satisfying inclusion criteria. Both groups were operated under local anesthesia by regional nerve blocks. In one group of patients after peripheral neurectomy, the proximal nerve stump was left alone in the foramina, and in another group of patients, obturation of foramina was done with stainless steel screws after peripheral neurectomy.Materials and Methods:Peripheral neurectomy was done on the terminal branches of trigeminal nerve in 14 patients. We selected only those cases that were experiencing pain after Carbamazepine therapy, all our patients were from rural and remote areas where facilities to neurosurgical centers are limited. Elderly patients who were unfit for surgical procedures and those patients who were reluctant for major neurosurgical treatments were considered for the study.Results:Post-surgical pain relief varied from 15 months to 24 months in cases where neurectomy was done without placing stainless steel screws in the foramina. Those cases where peripheral neurectomy was done along with the placement of stainless steel screws in the foramina, none of the patient had painful symptoms even after minimum 2 years of follow-up. Student's `t`-test of 2 groups showed the remission period to be statistically highly significant in patients with stainless steel screw obturation, having P-value <0.0005.Obturating the foramen with stainless steel screws can prevent nerve regeneration. Thus, remission of pain can be prolonged.Conclusion:Peripheral neurectomy is thus a safe and effective procedure for elderly patients, for those patients living in remote and rural places that cannot avail major neurosurgical facilities, and for those patients who are reluctant for major neurosurgical procedures.

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In the present study, the optimum conditions for the production of xylanase by immobilized spores of Trichoderma reesei SAF3 in calcium alginate beads were determined. The operational stability of the beads during xylanase production under semi-continuous fermentation was also studied. The influence of alginate concentration (1, 2, 3, and 4%) and initial cell loading (100, 200, 300, 400, and 500 beads per flask) on xylanase production was considered. The production of xylanase was found to increase significantly with increasing concentration of alginate and reached a maximum yield of 3.12+/-0.18 U ml(-1) at 2% (w/v). The immobilized cells produced xylanase consistently up to 10 cycles and reached a maximum level at the forth cycle (3.36+/-0.2 U ml(-1)).

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