Physical entrapment of chitosan in fixed-down-flow column bed enhances triclosan removal from water

Triclosan (TCS) is an emergent pollutant with wide-ranging deleterious effects on aquatic organisms and humans. There is a growing concern about the development of low-cost and efficient treatment systems for the removal of TCS from water. This report describes the performance of a prototype of a continuous flow, fixed bed column device with physically entrapped industrial by-product chitosan. The effects of initial TCS concentration, adsorbent dose in the column matrix, and flow rate were investigated with regard to removal efficiency (%), adsorption capacity and breakthrough time. To understand the thermodynamic properties of the adsorption process, three kinetic models - Thomas, Yoon-Nelson and Adams-Bohart - were applied to the experimental data for the prediction of characteristic parameters of the adsorption process. The Yoon-Nelson model showed the best agreement between the experimental and calculated values. The column showed a near saturation state (C_t/C₀ = 0.92; C₀ and C_t are the concentration of TCS before and after treatment.) at 90 mg L^-1 TCS concentration after 60 minutes. In view of non-availability of a treatment process for the emergent pollutant TCS, the data of the present investigation will facilitate the development of novel prototypes of column bed reactors for the removal of TCS.

A prototype of novel agro-waste based column bed device for removal of textile dye Optilan Red

The aim of the study was to assess the potentiality of an agro-waste (sugarcane bagasse) for removal of the textile dye (Optilan Red) using novel column based filtration unit with a packed column of chemically treated sugarcane bagasse. The treated and untreated sugarcane bagasse (biosorbent) were characterized by Fourier transform infrared (FT-IR) spectroscopy. Effect of initial dye concentration on percentage removal of dye, equilibrium adsorption of sugarcane bagasse, kinetic studies, breakthrough point equilibrium and desorption of dye from the column material were studied. An inverse dependence of initial dye concentration on percent removal of dye was observed, whereas the equilibrium adsorption (q_e) showed a direct relationship with dye concentration. The time required for reaching breakthrough point was 120 min. Desorption of dye through alkali wash resulted in complete desorption after 1 h washing of the column for its reuse for next cycle. FT-IR analysis shows vibration in valence bands of the hydrogen bond of OH group, and the bands of intra-molecular and intermolecular hydrogen bonds, which results in interaction of treated bagasse with Optilan Red textile dye. The present study showed that more than 93% removal of the dye can be achieved in the concentration range 10-50 ppm (aqueous solution). The removal efficiency of the column remained almost unchanged for the treatment of dye-house wastewater spiked with the dye. The agro-waste based treatment process shows a considerable potential for a low-cost treatment of dye contaminated water.

Lipid profile of population of central region of Nepal

This study was conducted to know the status of Lipid profile in people of central region of Nepal. This study was conducted in College of Medical Sciences & Teaching Hospital, Bharatpur, Nepal from February 2009 to March 2010 which is situated in central region of Nepal. A total of 870 cases, out of which 512(58.85%) male and 358(41.14%) female were included and study was carried out using data retrieved from the register maintained in the Department of Biochemistry. The variables collected were age, sex, lipid profile which includes total cholesterol (TC), triglycerides (TG), high density lipoprotein-cholesterol (HDL-C) & low density lipoprotein-cholesterol (LDL-C). The data was analyzed using excel 2007 and Statistical Package for the Social Sciences (SPSS) 16.0. The total mean±SD of TC, TG, HDL-C, LDL-C were found to be 164.87±49.49, 157.56±79.78, 33.59±11.10, 97.79±40.68 respectively. Total Cholesterol, HDL-C & LDL-C were found to be statistically significant whereas TG was statistically insignificant between male and female. In both male and female, TG & LDL-C were higher in the age group of 21-40 years whereas HDL-C was higher in the age group of >61 years in both the group. Total cholesterol (TC) level was higher in the age group of 21-40 years in male while in female in the age group of 41-60 years. Desirable level of TC was observed in 78.50% of the total subjects while the normal TG, LDL-C were observed in 56.55%, 81.49%, respectively. Very high levels of TC, TG, LDL-C were observed in 4.94%, 0.34% & 1.6% of the total population studied, respectively. More percentage of female (27.65%) had higher HDL-C level than in male (15.62%). High triglycerides (TG) level is the commonest lipid abnormality in our study. HDL-C level was increase with increasing in age. Clinical evaluation can be made according to this study.

Comorbid psychiatric disorders in substance dependence patients: A control study

BACKGROUND

The purpose of this study was to investigate the comorbidity of mental disorders among a random sample of substance dependence patients from a psychiatric inpatients department and the general population.

MATERIALS AND METHODS

Comprehensive data was collected from inpatients with substance abuse/dependence and comorbidity of mental disorders at the Ranchi Institute of Neuropsychiatry and Allied Sciences (RINPAS) and from normal controls from the general population during the period January 2007 to May 2007.

RESULTS

The results show that the most prevalent comorbid disorders in substance dependence patients and substance abusers were depressive disorders.

CONCLUSIONS

The majority of substance dependence patients suffered from comorbid mental disorders. Comorbidity needs to be taken into account when analyzing the relationship between substance dependence and depression and in planning treatment strategies for comorbid conditions.

Subjective burden on spouses of schizophrenia patients

BACKGROUND

There is limited information from India on subjective burden on spouses of schizophrenia patients. The aim of the present study was to assess and compare patterns of subjective burden on spouses of schizophrenia patients.

MATERIALS AND METHODS

The present study was conducted at the OPD level, and follow-up was done at the Ranchi Institute of Neuropsychiatry and Sciences (RINPAS) during the period May 2008 to November 2008. Tools utilized were sociodemographic data sheet, Family Burden Interview Schedule developed by Pai and R. L. Kapur (1981). The sample comprised of 50 samples of spouses (25 male and 25 female spouses of schizophrenia patients).

METHODS

The present study was conducted at the OPD level, and follow-up was done at the Ranchi Institute of Neuropsychiatry and Sciences (RINPAS) during the period May 2008 to November 2008. Tools utilized were sociodemographic data sheet, Family Burden Interview Schedule developed by Pai and R. L. Kapur (1981). The sample comprised of 50 samples of spouses (25 male and 25 female spouses of schizophrenia patients).

RESULTS

The findings suggest that both the groups, viz., male and female spouses of schizophrenia patients, showed moderate level of subjective burden, i.e., 13 (52%) and 15 (60%) male and female spouses, respectively, which was statistically found to be insignificant.

CONCLUSION

No significant difference was found between male and female spouses of schizophrenia patients with regard to the level of subjective burden.

Possible psychosocial strategies for controlling violence against women

Women, the fair sex, are considered to be the weaker sex and one of the most powerless and marginalized sections of our society. Violence against women and girls continues to be a global epidemic. It is present in every country, cutting across boundaries of culture, class, education, income, ethnicity and age. A growing body of research studies indicates that 20% to 50% (varying from country to country) of women have experienced domestic violence. A multilayered strategy that addresses the structural causes of violence against women is needed. Strategies and interventions attempting to address violence against women should be guided by 5 underlying principles: Prevention, protection, early intervention, rebuilding the lives of victims/survivors and accountability. When planning interventions, there are a variety of stakeholders who should be borne in mind. Key areas for intervention include encouraging women empowerment; advocacy and awareness raising; education for building a culture of nonviolence; encouraging active participation of women in political system; resource development; direct service provision to victims, survivors and perpetrators; networking and community mobilization; direct intervention to help victims/survivors rebuild their lives; legal reform; monitoring interventions and measures; early identification of 'at risk' families, communities, groups and individuals; and data collection and analysis.

Students' perception about mental illness

BACKGROUND

In developing countries like India, there are evidences that stigma associated with mental illness is increasing. As in parts of the developing world, with advancement of urbanization and rapid industrialization, people tend to react in a very peculiar and biased way when they confront a mentally ill person.

MATERIALS AND METHODS

The present study aimed to find out students' opinion about mental illness. A total of 100 students (50 male and 50 female) from Ranchi University were purposively recruited for the study, and the 51-item Opinion about Mental Illness (OMI) Scale was administered.

RESULTS

Majority of the students were from Hindu families, of whom 42 (84%) were males and 38 (68%) were females. With regard to OMI scale, the item, viz., 'The law should allow a woman to divorce her husband as soon as he has been confined in mental hospital with a severe mental illness', both male (46%) and female (56%) students were neutral (significant at 0.014, P < 0.05).

CONCLUSION

Overall no significant level of difference emerged between male and female students with regard to opinion about mental illness.

[Increased sensitivity for detection of mutations in exon 15 of the APC gene in patients with familial adenomatous polyposis]

BACKGROUND

Protein Truncation Test (PTT) was used to detect mutations in exon 15 of the APC gene in patients with Familial Adenomatous Polyposis. This method is limited by its ability to detect polypetide chains up to a certain minimum length. The aim of this study was to increase the sensitivity of detection of mutations in this region by using the technique of Denaturing Gradient Gel Electrophoresis (DGGE).

METHODS AND RESULTS

Study were performed on 122 patients without detected mutations in the APC gene. The patients were divided into two independent groups 15A and 15A+15B (with 51 and 71 patients respectively). All the patients were tested with the DGGE and the positive findings were confirmed with sequencing. No mutation was detected in the group 15A (0%). In group 15A+15B one (1.4%) polymorphism and four (5.63%) patients with nonsense mutations were detected.

CONCLUSIONS

DGGE is an effective method for detecting mutations in the first part of exon 15 of APC gene. It allows detecting any change in DNA strand. DGGE complements PTT in scanning of the whole exon 15 of APC gene.

Effect of mutations in Gag on assembly of immature human immunodeficiency virus type 1 capsids in a cell-free system

Studies of HIV-1 capsid formation in a cell-free system revealed that capsid assembly occurs via an ordered series of assembly intermediates and requires host machinery. Here we use this system to examine 12 mutations in HIV-1 Gag that others studied previously in intact cells. With respect to capsid formation, these mutations generally produced the same phenotype in the cell-free system as in cells, indicating the cell-free system's high degree of fidelity. Analysis of assembly intermediates reveals that a mutation in the distal region of CA (322 LDeltaS) and truncations proximal to the second cys-his box in NC block multimerization of Gag at early stages in the cell-free capsid assembly pathway. In contrast, mutations in the region of amino acids 56-68 (located in the proximal portion of MA) inhibit assembly at a later point in the pathway. Other mutations, including truncations distal to the first cys-his box in NC and mutations in the distal half of MA (88HDeltaG, 85YDeltaG, Delta104-115, and Delta115-129), do not affect formation of immature capsids in the cell-free system. These data provide new information on the role of different domains in Gag during the early events of capsid assembly.

A trial of thyroxine in acute renal failure

A trial of thyroxine in acute renal failure.

BACKGROUND

Acute renal failure (ARF) remains a serious medical problem with a high mortality rate. Efforts to shorten the course of ARF might reduce this mortality. Since thyroxine has been shown in experimental models to shorten the course of ARF, we designed a trial to determine if a defined course of thyroxine would alter the course or change the mortality of clinical ARF.

METHODS

A prospective, randomized, placebo-controlled, double-blind trial of thyroxine was carried out in patients with ARF. End points were the percentage requiring dialysis, the percentage recovering renal function, time to recovery, and mortality.

RESULTS

Fifty-nine patients were randomized to receive either thyroxine or placebo. The groups were well matched in terms of basal and entry creatinines, age, sex, APACHE II scores at entry, and percentage oliguric. Baseline thyroid functions, including T3, T4, rT3, and thyroid stimulating hormone (TSH) levels, were equal between the two groups and typical of patients with euthyroid sick syndrome. Thyroxine resulted in a progressive and sustained suppression of TSH levels in the treated group, but had no effect on any measure of ARF severity. Mortality was higher in the thyroxine group than the control group (43 vs. 13%) and correlated with suppression of TSH.

CONCLUSIONS

In contrast to the beneficial effects seen in experimental ARF, thyroxine has no effect on the course of clinical ARF and could have a negative effect on outcome through prolonged suppression of TSH. Critically ill euthyroid sick patients should not be replaced with thyroid hormone.

Superior sagittal sinus thrombosis in a child with nephrotic syndrome

A 3-year-old male with steroid-responsive nephrotic syndrome developed a rare complication, sagittal sinus thrombosis during an episode of gastroenteritis, while on steroid therapy. Anticoagulation, as assessed by partial thromboplastin time, was difficult to maintain, despite administering high doses of heparin, infusions of fresh-frozen plasma to provide antithrombin III, and, subsequently, maximum doses of warfarin (0.3 mg/kg per day). Despite these problems the child made a complete neurological recovery.

Socio-demographic pattern of drug and alcohol dependents

The widespread abuse of drugs and Alcohol has become a human tragedy. Each year the abuse of Alcohol and Illicit drugs exact an enormous toll in deaths, decline in productivity, more crime and accidents and also increased expenditure in rehabilitation. The situation is likely to worsen and even may get out of hand if adequate measure are not taken to clearly identify the vulnerable group so as to provide them proper and maximal help. The present paper proposes to examine the sociodemographic correlates viz. Age, Sex group. Educational Status, Income Group, Marital Status and also possible causes of drug abuse of these patients. For this purpose patients of Dr. Vidya Sagar Hospital's drug-de-addition cum rehabilitation unit were statistically analysed. The findings have been discussed.

Psychiatric knowledge & orientation of non-psychiatrist doctors

52 Non-psychiatrist doctors were evaluated in order to know their psychiatric orientation with the help of clinical case history along with questionnaire. Only one doctor subject could give all the diagnosis correctly on the basis of clinical stories; on the other hand all the doctors gave the diagnosis of epilepsy correctly. This reflects basic lack of understanding of psychiatry resulting from poor theoretical teaching and exposure at undergraduate level. Other characteristics of the sample and finding are discussed here.

Death, dying and near death experience

Psychology of deaths due to acute medical emergencies is under-researched. Most studies till now have concentrated on extended-death situations like malignancy. This open pilot study of twenty five patients examines the psychological state of patients during a life threatening acute medical illness (Group A, ten patients) and of those who survive such an experience (Group B, fifteen patients). The study finds psychological exploration both possible and necessary if carried out in a discreet manner. Salient features of the interview technique are discussed. The study finds out whether patients are aware of the possibility of terminality. The psychological disturbances manifest and nature of care expected are also discussed. Near Death Experiences of those who acknowledge their occurence are reported. Some nuances of thanatological research are high-lighted: What are the abilities needed in an interviewer? Can such exploration increase psychological distress in a patient already prone to it because of serious medical sickness? What impact such research can have on the interviewer himself? The paper answers some of these common questions while developing the method of thanatological study in acute medical death-situations.

Carcinogenic activity of a chlorinated polyether polyurethan

On the basis of the results of an earlier study, a particular polyurethan sample (Y-238) was selected for further evaluation of its carcinogenic potential. This sample was subjected to physical and chemical tests for elucidation of its chemical structure, molecular weight, and molecular weight distribution. Additional biological tests were conducted on male NBR rats by implanting various quantities of the sample i.p., while others received an intrabronchus implant. Tumors, assessed histologically as malignant, were observed following both routes of implantation. The most common neoplasms of the pulmonary site was epidermoid carcinoma, while fibrosarcoma was the most common neoplasm in the peritoneal cavity. Data from the i.p. implantation suggested a dose-related incidence of cancers.

Maternal-fetal transfer of 14C-di-2-ethylhexyl phthalate and 14C-diethyl phthalate in rats

14C-Di-2-ethylhexyl and 14C-diethyl phthalates were administered intraperitoneally to pregnant rats on either Day 5 or 10 of gestation. Rats were sacrificed at 24-hr intervals starting on Days 8 and 11, respectively; maternal blood, fetal tissue, amniotic fluid, and placentas (whenever possible) were obtained. The 14C-activity of each sample was determined by scintillation counting. It was found that both diesters and/or their metabolic products were present in each of these compartments throughout the gestation period, thus suggesting that the embryo-fetal toxicity and teratogenesis reported previously could be the results of a direct effect of the compound (or its metabolites) upon developing embryonic tissue. Additionally, the reduction in concentration of 14C from these tissues as a function of time was found to fit a first-order excretion curve. From this model curve, the half-life for both compounds was calculated; the average was about 2.33 days for di-2-ethylhexyl phthalate and 2.22 days for diethyl phthalate.

Carcinogenesis from polyurethans

Seventeen polyurethans, containing various substituent groups, and a polyethylene were implanted i.p. in groups of male black Bethesda rats and were evaluated for carcinogenesis over a 2-year period. Thirteen of the polyurethans and the polyethylene were similarly studied in females. Tumor development in these animals was expressed in terms of the incidence in the at-risk population, and the tumorigenic latent period was approximated for each sample. Twenty months after implantation, the relative tumorigenicity (area under the corrected cumulative tumor mortality versus time curve) in the males ranged from 0 (for the unimplanted controls) to 6.18 (for Y-238); for female rats this range was 0.29 (for unimplanted controls) to 5.72 (for Y-238). Estimated latent periods in the males ranged from 5 months (for Y-304) to 16 months (for Y-303), and 22.5 months for the unimplanted controls; for the females, the range was from 9 months (for Y-290) to 13.5 months (for Y-217), and 14 months for the unimplanted controls. The relative tumorigenicity of each sample was also compared to its in vitro activation energy for thermal decomposition. These data are discussed in terms of solid-state versus chemical carcinogenesis.

Embryonic-fetal toxicity and teratogenic effects of a group of methacrylate esters in rats

Monomers of five methacrylate esters and acrylic acid were administered at three dose levels to female rats on days 5, 10, and 15 of gestation. The incidences of resorptions, dead fetuses, gross abnormalities, and skeletal malformations are presented for each of these groups. Mean fetal weights also were determined for each group, and those of the monomer-treated groups were significantly smaller (P ≤ 0.01) than those of the untreated controls.

Prevalence of hyperuricemia in Chitwan District of Nepal

The prevalence of hyperuricemia has been increasing in both developed and developing countries. The purpose of present study was to know the prevalence of hyperuricemia in the population of Chitwan district as well as to compare the prevalence of hyperuricemia between Mongolian and non-Mongolian races of Chitwan district, who had attended the College of Medical Sciences and Teaching Hospital, Bharatpur, Nepal during the period of January 1999 to December 2003. In this study 3794 subjects were investigated for serum uric acid level (SUA). Hyperuricemia is defined as SUA more than 7mg/dl for males and menopausal women and 6mg/dl for pre-menopausal females. SUA was estimated by Caraway method in digital colorimeter. Overall prevalence was 21.42%; the condition was more common in men than women (26.78% vs. 16.82%; p<0.001). The prevalence was higher in Mongolian than non Mongolian both in males and females (24.50 % Vs 21.06%; p>0.05). Key words: Hyperuricemia; SUA; digital colorimeter DOI: 10.3126/jcmsn.v6i2.3612   Journal of college of Medical Sciences-Nepal, 2010, Vol.6, No-2, 18-23

Study of effect of ethanol on antioxidant - vitamin A and C in rat liver

Objective: To see the effect of consumption of locally distilled alcohol (country liquor) continuously for few months on hepatic vitamin A and C status in albino rats. Materials and methods: The study was conducted in 36 male wistar strain albino rats for 3-4 months old consisting six groups of six animals each. Results: The first observation was weight gain among the series of alcoholic animals when compared to the control and alcoholic fed animals supplemented with vitamin A and C, p-value by T-test between the mean values of the initial weight and final weight was < 0.01 (0.006), significant. Conclusion: It was found that the major effect on hepatic vitamin A and C contents were observed more distinctly in mitochondrial fractions when compared with the rest fractions. Supplementation of vitamins helped to protect loss of the vitamins which delayed the aging process at age 9-10 months in our study. Key words: Albino rats; alcoholic; hepatic; vitamin A DOI: 10.3126/jcmsn.v6i1.3599 Journal of College of Medical Sciences-Nepal, 2010, Vol. 6, No. 1, 29-34