Resistance to PRMT5-targeted therapy in mantle cell lymphoma

ABSTRACT

Mantle cell lymphoma (MCL) is an incurable B-cell non-Hodgkin lymphoma, and patients who relapse on targeted therapies have poor prognosis. Protein arginine methyltransferase 5 (PRMT5), an enzyme essential for B-cell transformation, drives multiple oncogenic pathways and is overexpressed in MCL. Despite the antitumor activity of PRMT5 inhibition (PRT-382/PRT-808), drug resistance was observed in a patient-derived xenograft (PDX) MCL model. Decreased survival of mice engrafted with these PRMT5 inhibitor-resistant cells vs treatment-naive cells was observed (P = .005). MCL cell lines showed variable sensitivity to PRMT5 inhibition. Using PRT-382, cell lines were classified as sensitive (n = 4; 50% inhibitory concentration [IC50], 20-140 nM) or primary resistant (n = 4; 340-1650 nM). Prolonged culture of sensitive MCL lines with drug escalation produced PRMT5 inhibitor-resistant cell lines (n = 4; 200-500 nM). This resistant phenotype persisted after prolonged culture in the absence of drug and was observed with PRT-808. In the resistant PDX and cell line models, symmetric dimethylarginine reduction was achieved at the original PRMT5 inhibitor IC50, suggesting activation of alternative resistance pathways. Bulk RNA sequencing of resistant cell lines and PDX relative to sensitive or short-term-treated cells, respectively, highlighted shared upregulation of multiple pathways including mechanistic target of rapamycin kinase [mTOR] signaling (P < 10-5 and z score > 0.3 or < 0.3). Single-cell RNA sequencing analysis demonstrated a strong shift in global gene expression, with upregulation of mTOR signaling in resistant PDX MCL samples. Targeted blockade of mTORC1 with temsirolimus overcame the PRMT5 inhibitor-resistant phenotype, displayed therapeutic synergy in resistant MCL cell lines, and improved survival of a resistant PDX.

Mental health-related structural stigma and discrimination in health and social policies in Nepal: A scoping review and synthesis

AIMS

National policies can be used to reveal structural stigma and discrimination in relation to mental health. This review assesses how structural stigma and discrimination are manifested in the policies and legislations of Government of Nepal.

METHODS

Scoping review methodology was followed to review policy documents (acts of parliament, legislation, policies, strategies, guidelines and official directives) drafted or amended after 2010.

RESULTS

Eighty-nine policies were identified related to health, social welfare, development and regulations which were relevant to people with psychosocial and mental disabilities or have addressed the mental health agendas. Several critical policy failings and gaps are revealed, such as the use of stigmatizing language (e.g., 'insane' or 'lunatic'), inconsistencies within and between policies, deviation from international protocols defining legal capacity and consent, lack of inclusion of the mental health agenda in larger development policies and lack of cost-effective interventions and identification of financing mechanisms. Provisions for people living with mental health conditions included adequate standard of living; attaining standard mental health; the right to exercise legal capacity, liberty and security; freedom from torture or discrimination; and right to live independently. However, other policies contradicted these rights, such as prohibiting marriage, candidacy for and retention of positions of authority and vulnerability to imprisonment.

CONCLUSION

Mental health-related structural stigma and discrimination in Nepal can be identified through the use of discriminator language and provisions in the policies. The structural stigma and discrimination may be addressed through revision of the discriminating policies, integrating the mental health agenda into larger national and provincial policies, and streamlining policies to comply with national and international protocols.

Exploring molecular interactions of potential inhibitors against the spleen tyrosine kinase implicated in autoimmune disorders via virtual screening and molecular dynamics simulations

The spleen tyrosine kinase (Syk) plays a pivotal role in immune cells' signal transduction mechanism. While fostamatinib, an FDA-approved Syk inhibitor, is currently used to treat immune thrombocytopenia, the search for improved Syk-targeted medications to treat autoimmune diseases is still underway. Herein, we screened 38,493 compounds against Syk and selected eight leads based on the docking score and ADMET properties, and performed 3× 200 ns long molecular dynamics simulations of the apo and Syk-ligand complexes. We considered R406, the active component of fostamatinib, as a control. The molecular mechanics Poisson-Boltzmann surface area (MM-PBSA) calculations demonstrated the lead1 (Δ G b i n d  = -30.35 kcal/mol) exhibited a similar binding free energy as the control (Δ G b i n d = -29.82 kcal/mol). The Syk stabilizing effect of lead1 was also indicated in its network features, sampling space, and residual correlation motion analysis. We further generated 100 structural analogues of lead1 using deep learning, and one of the analogues displayed a better binding free energy (Δ G b i n d = -47.58 kcal/mol) compared to the control or lead1, facilitated by more favourable van der Waals interactions and lesser binding-opposing net polar forces. This analogue may be further exploited to develop effective therapeutics against Syk-associated diseases after validation in vitro and in vivo.

PRMT5 supports multiple oncogenic pathways in mantle cell lymphoma

Mantle cell lymphoma (MCL) is an incurable B-cell malignancy with an overall poor prognosis, particularly for patients that progress on targeted therapies. Novel, more durable treatment options are needed for patients with MCL. Protein arginine methyltransferase 5 (PRMT5) is overexpressed in MCL and plays an important oncogenic role in this disease via epigenetic and posttranslational modification of cell cycle regulators, DNA repair genes, components of prosurvival pathways, and RNA splicing regulators. The mechanism of targeting PRMT5 in MCL remains incompletely characterized. Here, we report on the antitumor activity of PRMT5 inhibition in MCL using integrated transcriptomics of in vitro and in vivo models of MCL. Treatment with a selective small-molecule inhibitor of PRMT5, PRT-382, led to growth arrest and cell death and provided a therapeutic benefit in xenografts derived from patients with MCL. Transcriptional reprograming upon PRMT5 inhibition led to restored regulatory activity of the cell cycle (p-RB/E2F), apoptotic cell death (p53-dependent/p53-independent), and activation of negative regulators of B-cell receptor-PI3K/AKT signaling (PHLDA3, PTPROt, and PIK3IP1). We propose pharmacologic inhibition of PRMT5 for patients with relapsed/refractory MCL and identify MTAP/CDKN2A deletion and wild-type TP53 as biomarkers that predict a favorable response. Selective targeting of PRMT5 has significant activity in preclinical models of MCL and warrants further investigation in clinical trials.

Intimate Partner Violence and Adverse Pregnancy Outcomes

Background Intimate partner violence (IPV) is an abuse or harm that occurs in a close relationship. The World Health Organization (WHO) estimated that, globally, 35% of women living in industrialized and developed countries have experienced exposure to intimate partner violence and during pregnancy it is associated with low birth weight, preterm birth, and even death of the baby. Objective To find out proportion of intimate partner violence and adverse pregnancy outcome among postnatal mothers who recently delivered their baby. Method A cross-sectional study was conducted among 220 postnatal mothers using a structured questionnaire based on 13-item WHO Violence against women instrument in Nepali language. Face-to-face interview technique was used to collect data using consecutive sampling technique at Kathmandu Medical College teaching Hospital. The data were analyzed using SPSS version 20. Result In recent pregnancy, 32.7% of women had experienced intimate partner violence at least once, which has been categorized as physical 28.6%, psychological 30.9%, and 22.7% sexual violence. Among them, 36% had low birth weight babies, 24% had preterm, 2.8% had dead baby, and 35% reported abortion in previous pregnancy. In the binary logistic regression, intimate partner violence was significantly associated with preterm baby (OR-1.143, 95% CI- 0.386-3.384, p=0.002), low-birth weight (OR0.237, 95% CI- 0.093-0.602, p ≤ 0.001), and abortion (OR-0.021, 95% CI- 0.003-0.175, p ≤ 0.001). Conclusion One in three women experienced intimate partner violence during their recent pregnancy and is associated with adverse pregnancy outcomes. Programs targeting screening of intimate partner violence against women should therefore be emphasized during reproductive health services such that adverse pregnancy outcomes can be prevented.

High success and low recurrence with shorter treatment regimen for multidrug-resistant TB in Nepal

SETTING:

Nine drug-resistant TB centres, some of them supported by Damien Foundation in Nepal where >80% of multidrug-resistant/rifampicin-resistant TB (MDR/RR-TB) patients are treated.

OBJECTIVE:

To assess the uptake, effectiveness and safety of the 9–12-month shorter treatment regimen (STR) in MDR/RR-TB patients registered from January 2018 to December 2019.

DESIGN:

This was a cohort study involving secondary programme data.

RESULTS:

Of 631 patients, 301 (48.0%) started and continued STR. Key reasons for ineligibility to start/continue STR were baseline resistance or exposure to second-line drugs (62.0%), contact with extensively drug-resistant TB (XDR-TB) or pre-XDR-TB (7.0%) patients and unavailability of STR drugs (6.0%). Treatment success was 79.6%; unsuccessful outcomes were death (12.0%), lost to follow-up (5.3%), failure (2.7%) and not evaluated (0.7%). Unsuccessful outcomes were significantly associated with HIV positivity and patient age ⩾55 years, with adjusted relative risk of respectively 2.39 (95% CI 1.52–3.77) and 3.86 (95% CI 2.30–6.46). Post-treatment recurrence at 6 and 12 months was respectively 0.5% and 2.4%. Serious adverse events (SAEs) were seen in 15.3% patients — hepatotoxicity and ototoxicity were most common.

CONCLUSION:

STR had a modest uptake, high treatment success and low post-treatment recurrence. For proper detection and management of SAEs, improving pharmacovigilance might be considered. Availability of rapid diagnostic test for second-line drugs is crucial for correct patient management.

Risk Factors of Malnutrition among under Five Children Admitted in Kanti Children's Hospital in Nepal

Background World Health Organization (WHO) stated that malnutrition is a major global health and social problem from which many people are suffering, particularly children. Poor feeding and care practices, insufficient nutrient intake, high rate of infection and teenage pregnancy are the immediate causes of chronic malnutrition. Objective To identify the risk factors for malnutrition among under five children. Method A case control study was carried out among the mothers having under-5 years' children who were admitted in the Kanti Children's Hospital of Nepal from 1st August 2019 to 7th September 2020. Non-probability purposive sampling technique was used to select 50 children with malnutrition and 100 children without malnutrition matched on age, sex and setting. A structured interview was used to collect data from mothers of both cases and controls. Descriptive and inferential statistics were used to analyze the data. Result Present study reveals that 58% girl got marriage before 20 years. After confounders adjusted, mother's age ≥ 20 years at marriage (OR: 2.74, 95% CI: 0.98-7.63. p=0.05), and mother's age ≥ 20 years at child birth (OR: 7.74, 95% CI: 2.37-25.27. p=0.001), were significantly associated with having malnutrition among under five children. Similarly, accessibility of health facility (OR: 3.31, 95% CI: 1-10.94. p=0.05), fathers who completed master in education (OR: 0.08, 95% CI: 0.01-0.88. p=0.04), children who lived in joint family (OR: 0.25, 95% CI: 0.07-0.86. p=0.03), child < 2.5 kg at birth (OR: 0.18, 95% CI: 0.05-0.62. p=0.01), and second and third or above in order (OR: 0.09, 95% CI: 0.01-1.04. p=0.05) had significantly less chance of having malnutrition. Children's whose birth interval was 2-3 years were significantly (OR: 9.74, 95% CI: 1.16-82.23. p=0.04) associated with the occurrence of malnutrition. Children who had suffered from multiple co-morbidities in last one year were (OR: 4.55, 95% CI: 0.48-43.03. p=0.18) more chance of having malnutrition. Likewise, the mothers who feed colostrum to their child had (OR: 2.28, 95% CI: 0.52- 9.26. p=0.29) almost two-fold less chance of having malnutrition. Mothers who had done exclusive breast feeding ≥ 4 months had (OR: 40.55, 95% CI: 3.35-1.490.92. p=0.008) significantly associated with having malnutrition. Conclusion Low education status of father, living in single family, exclusive breast feeding ≥ 4 months, lack of balance diet were significant risk factors of malnutrition. Based on finding, reliable longitudinal studies, interventions and program to educate parent for prevention of malnutrition are necessary in future.

Outcome of treatment of MDR-TB or drug-resistant patients treated with bedaquiline and delamanid: Results from a large global cohort

The World Health Organization (WHO) recommends countries introduce new anti-TB drugs in the treatment of multidrug-resistant tuberculosis. The aim of the study is to prospectively evaluate the effectiveness of bedaquiline (and/or delamanid)- containing regimens in a large cohort of consecutive TB patients treated globally. This observational, prospective study is based on data collected and provided by Global Tuberculosis Network (GTN) centres and analysed twice a year. All consecutive patients (including children/adolescents) treated with bedaquiline and/or delamanid were enrolled, and managed according to WHO and national guidelines. Overall, 52 centres from 29 countries/regions in all continents reported 883 patients as of January 31st 2021, 24/29 countries/regions providing data on 100% of their consecutive patients (10-80% in the remaining 5 countries). The drug-resistance pattern of the patients was severe (>30% with extensively drug-resistant -TB; median number of resistant drugs 5 (3-7) in the overall cohort and 6 (4-8) among patients with a final outcome). For the patients with a final outcome (477/883, 54.0%) the median (IQR) number of months of anti-TB treatment was 18 (13-23) (in days 553 (385-678)). The proportion of patients achieving sputum smear and culture conversion ranged from 93.4% and 92.8% respectively (whole cohort) to 89.3% and 88.8% respectively (patients with a final outcome), a median (IQR) time to sputum smear and culture conversion of 58 (30-90) days for the whole cohort and 60 (30-100) for patients with a final outcome and, respectively, of 55 (30-90) and 60 (30-90) days for culture conversion. Of 383 patients treated with bedaquiline but not delamanid, 284 (74.2%) achieved treatment success, while 25 (6.5%) died, 11 (2.9%) failed and 63 (16.5%) were lost to follow-up.

Influence of learning-style preferences in academic performance in the subject of human anatomy: an institution-based study among preclinical medical students

Purpose: The present study was conducted to find the preferred mode of learning among first-year preclinical students and compare the preferred mode of learning with sex, faculty of students, and academic performance of the students using the VARK questionnaire. Methods: A cross-sectional study was done among 142 first-year Bachelor of Medicine-Bachelor of Surgery and Bachelor of Dental Surgery students from February to May 2018. Demographic data and various academic performance marks were recorded for each individual. VARK (visual, aural, read/write and kinesthetic) questionnaire version 7.8 was administered to calculate the score of each component. Mean VARK scores were calculated and each student classified by their preferred mode of learning. The preferred mode of learning was compared with sex, nationality, faculty of students, and academic performance using χ ², unpaired t-tests, and the Mann-Whitney U test. P<0.05 was taken as statistically significant for comparison. Results: A majority of the students (53.52%) were multimodal. The most common multimodal mode of preference was bimodal (26.06%), while the most common unimodal preference was kinesthetic (29.06%). Total V score, K score, and VARK score were higher among males, while A and R scores were higher among females. The K score (7.96±2.35 in males and 6.96±2.43 in females) differed significantly (P=0.019) between male and female subjects. More subjects with higher scores in the theory exam of anatomy were unimodal learners (53.8%) compared to multimodal learners (46.2%). Conclusion: From this study, it can be concluded that undergraduate students were diverse in their learning styles, but most were multimodal. Though learning styles were found to vary by sex, nationality, and academic performance, differences were not statistically significant.

Postoperative Complications of Transsphenoidal Pituitary Adenectomy: A Single Institution Based Experience

Background Inside a cranium, pituitary gland seats in an area of complex anatomical construct. Further it holds a very important physiological role to maintain all bodily function. Pituitary adenoma being one of the commonest tumors of that intricate area is preferably tackled with transsphenoidal approach. However, as in any surgery, it is also not without postoperative complications. Objective To examine and categorize all the postoperative complications that we have encountered in our center after pituitary surgery. Method A retrospective study of patients who had undergone transsphenoidal pituitary adenectomy in past five years was conducted at a tertiary level neurosurgical center and various postoperative complications during hospital stay were noted and analyzed. Result In our series of 53 patients, we met different postoperative complications, out of which diabetes insipidus (DI) was the commonest. Other electrolyte abnormalities excluding diabetes insipidus was the second most common followed by Cerebrospinal fluid leak. Post-operative hematoma requiring re-exploration, panhypopituitarism, seizure and meningitis were among the rare complications. No statistically significant association was noted between tumor size, patient age and sex with surgical complications. Conclusion Postoperative complications should be anticipated in transsphenoidal pituitary surgery even though it is considered to be a relatively safe undertaking. Knowing about these complications is the first step in preventing them.

Outcome of Surgical Resection of Craniopharyngioma:Single Center 12 Years' Experience

Background Craniopharyngiomas (CPs) are rare epithelial tumors arising from the Rathke's pouch remnant located along the path of the craniopharyngeal duct accounting for 1.2-4% of all primary intracranial brain tumors, the primary treatment of which is surgery. Objective Whether radical surgical resection or partial resection followed by radiotherapy is a topic of debate. We presented our 12 years single center experience on surgical resection of craniopharyngioma. Method This was a descriptive cross-sectional study conducted among forty-five patients who underwent transcranial resection of craniopharyngioma during a period of 12 years. Data were collected from medical record archives. Glassgow outcome score (GOS), electrolyte imbalance and visual complications were assessed as outcome measure. GOS > 3 was considered favorable while score ≤ 3 was considered unfavorable. Recurrence of tumors were analyzed. Result Out of 45 patients, 28 patients were male with male to female ration of 1.64. Mean age was 32.22±16.42 years. Supra-sellar craniopharyngioma were the most common location. Gross total resection was accomplished in 32 patients (71.1%) while subtotal resection among 13 patients (28.9%). Post-operative Diabetes Insipidus was developed among 35 patients (77.7%). Adamantinomatous craniopharyngioma was the most common histopathological type. Postoperative MRI with contrast was repeated to ascertain the completeness of resection. All patient with subtotal resection received radiotherapy. Follow up period ranged from 3 months to 8 years with mean of 4.2 years. Favorable outcome (GOS>3) was seen among 41 patients while unfavorable among 4 patients. Recurrence seen among 4 patients (8.9%). Overall mortality was 4 (8.8%). Conclusion Gross total excision of craniopharyngioma has a favorable outcome with acceptable morbidity.

Assessing the Level of Knowledge in the Preconceptional Use of Folic Acid Supplement among Primigravida Women

Background Folic acid deficiency is one of the most common vitamin deficiencies among women of childbearing in developing countries. Folic acid intake prior to, and during, the first months of pregnancy significantly reduces the risk of fetal neural tube defects. Objective To find out the level of knowledge regarding the benefits and use of preconceptional folic acid supplements among pimigravida women. Method A hospital based cross-sectional study was conducted among 250 primigravida women attending obstetric outpatient department of Kathmandu Medical College Teaching Hospital. A pretested questionnaire was administered using systematic random sampling technique and data was analysed by SPSS version 16.0 using descriptive and inferential statistics. Result Study revealed that 10.8% respondents had good knowledge whereas, 65.6% had poor knowledge about preconceptional folic acid supplementation. 87.2% had taken folic acid at some point of pregnancy and 17.6 % of pregnant women had taken preconceptional folic acid. 21.2% had heard about folic acid supplement and 20% had known about benefits of preconceptional folic acid. 17.6% knew that it should be taken one month before conception and 16% answered that it could prevent neural tube defects. Conclusion Majority of primigravida women lack the knowledge of preconceptional folic acid. Most women planning to get pregnant are also not taking folic acid supplementation.

Neonatal Home Care Practices and Care Seeking Behaviour in Rural Makwanpur of Nepal

Aims: This study assesses the state of newborn home-care practices and care-seeking behaviors among the recently delivered mothers to better inform the behavior change communication efforts for effective implementation of the program.Methods: A descriptive study was conducted in two village development committees of Makwanpur district from June to July 2011. A total of 214 women, residing for six months or more in study areas and delivered within past one year, were interviewed using questionnaires designed to collect quantitative and qualitative data.Results: Eighty eight percent of the respondents practiced exclusive breastfeeding, 44% dried and wrapped their newborn within the first five minutes following delivery and 84% used a clean instrument to cut the umbilicus. Ninety-five percent of mother accessed antenatal care from a skilled health provider, 77% of mothers completed four antenatal care visits and only 13% of mothers accessed postnatal care. The first place the mothers would go for seeking care for the neonates was the Primary Health Care Center (54%) followed by the traditional practitioners (20%) and private clinics (6%). The low quality of services at Primary Health Care Center was the most commonly cited barrier to care-seeking (22%) followed by staff unavailability, behaviour and poor counselling.  Conclusions: Effective implementation of community-based integrated newborn care program will require engaging stakeholders in both short-term behaviour change communication strategies and long-term commitments to improving quality of care.

A glimpse of gluons through deeply virtual compton scattering on the proton

The internal structure of nucleons (protons and neutrons) remains one of the greatest outstanding problems in modern nuclear physics. By scattering high-energy electrons off a proton we are able to resolve its fundamental constituents and probe their momenta and positions. Here we investigate the dynamics of quarks and gluons inside nucleons using deeply virtual Compton scattering (DVCS)-a highly virtual photon scatters off the proton, which subsequently radiates a photon. DVCS interferes with the Bethe-Heitler (BH) process, where the photon is emitted by the electron rather than the proton. We report herein the full determination of the BH-DVCS interference by exploiting the distinct energy dependences of the DVCS and BH amplitudes. In the regime where the scattering is expected to occur off a single quark, measurements show an intriguing sensitivity to gluons, the carriers of the strong interaction.

Factors Associated with Smokeless Tobacco Use among Pregnant Women in Rural Areas of the Southern Terai, Nepal

BACKGROUND

Tobacco use among women during pregnancy leading to poor maternal and child health outcomes has been well documented. However, factors influencing use of smokeless tobacco in Nepal has not yet been well established. This study aims at exploring the factors related to smokeless tobacco use among pregnant women in rural southern Terai of Nepal.

METHODS

A community-based cross-sectional study was performed at 52 wards within 6 Village Development Committee in Dhanusha district of Nepal. A total of 426 expectant mothers in their second trimester were selected using a multistage cluster sampling method. Descriptive and regression analyses were done to explore the factors that influence smokeless tobacco use.

RESULTS

In a total of 426 pregnant mothers, one in five used tobacco in any form. Among the users, 13.4% used smokeless tobacco. Pregnant mothers who were smoking tobacco (AOR 6.01; 95% CI (1.88-19.23), having alcohol consumption (AOR 3.86; 95% CI (1.23-12.08), stressed (AOR 5.04; 95% CI (1.81-14.03), non-vegetarian (AOR 3.31;(1.84-13.03), not attending regular mothers' group meetings (AOR 4.63; (1.41-15.19), and not-exposed to mass media (AOR 5.02; (1.89-13.33) were significantly associated with smokeless tobacco use. Similarly, mothers of age group 20-34 years, dalit, aadibasi and janajati, hill origin, no education and primary education were more likely to use smokeless tobacco than their counterparts.

CONCLUSIONS

Factors such as smoking tobacco, alcohol consumption, stress, and poor education were found to be significantly associated with smokeless tobacco use among pregnant women in southern Terai of Nepal. This requires an immediate attention develop an effective strategy to prevent and control smokeless tobacco use among pregnant women in southern Terai of Nepal.

An Experience of Optimizing A Community-Based Micro-Insurance Model to Bridge the Gap between Treatment Cost and Ability to pay at BPKIHS

In the year 2001 the leaders of BPKIHS started a micro social insurance scheme; Social Health Insurance (SHI) for prospective research. It is a method of financing and managing health care using compulsory contributions from employers, employees and may be from the government. Household members from organized groups in catchment areas enrolled voluntarily. Photographed service cards were issued entitled for free IPD/OPD consultations, investigations and bed charges excluding CT scans and specialty treatment. Institute bore operation and medicine costs up to 10000 and 3500 respectively for IPD yearly. Premium was fixed after a research through focus group discussion in villages of Morang, Sunsari and Biratnagar. A flat rate premium of 15 and 50 NRS/adult/month for villagers, city dwellers and half for children was fixed. Marginalized community and handicapped paid 33% of premium, 33% by Institute and 33% by concerned VDC. As the client number increased from 2383 to 7392 in second and to 15779 in third year, Premium: Expenditure ratio moved from 225:222 to 198:391. Average cost sharing of premium to expenditure came to 226:332 showing a negative 3alance. This scheme completed its fourth year till this research in 2005 A.D. But it was closed due to deficit. As reinsured population occasionally concealed information by not incorporating all family members. They defaulted in subsequent year after utilizing the benefits of SHI and misused the card for uninsured ones. It may, in its optimized form, become a model to be widely adopted to bridge the gap between the cost of treatment and the ability to pay in developing countries.

Rosenbluth Separation of the π^{0} Electroproduction Cross Section

We present deeply virtual π^{0} electroproduction cross-section measurements at x_{B}=0.36 and three different Q^{2} values ranging from 1.5 to 2  GeV^{2}, obtained from Jefferson Lab Hall A experiment E07-007. The Rosenbluth technique is used to separate the longitudinal and transverse responses. Results demonstrate that the cross section is dominated by its transverse component and, thus, is far from the asymptotic limit predicted by perturbative quantum chromodynamics. Nonetheless, an indication of a nonzero longitudinal contribution is provided by the measured interference term σ_{LT}. Results are compared with several models based on the leading-twist approach of generalized parton distributions (GPDs). In particular, a fair agreement is obtained with models in which the scattering amplitude includes convolution terms of chiral-odd (transversity) GPDs of the nucleon with the twist-3 pion distribution amplitude. This experiment, together with previous extensive unseparated measurements, provides strong support to the exciting idea that transversity GPDs can be accessed via neutral pion electroproduction in the high-Q^{2} regime.

Fine needle aspiration cytology of head and neck lesions and its correlation with histopathology

Background: Fine needle aspiration cytology is a minimally invasive technique used in the initial diagnosis of different types of lesions located in head and neck region commonly originating from cervical lymph node, thyroid gland, salivary glands and soft tissues. The objective of this study was to evaluate the diagnostic accuracy, sensitivity and speci city of FNAC in various head and neck lesions in correlation with their histopathological examination. Materials and methods: A hospital based prospective study was conducted among 209 patients with palpable head and neck region swellings in the Department of Pathology, Bhaktapur Cancer Hospital and the Department of Pathology, Nepal Medical College from August 2014 to July 2015. FNAC were done from palpable masses of head and neck regions. Data entry and analysis were done using SPSS 17. Result: There were 209 FNAC cases enrolled, out of which lymph node lesions (n=128) were the most common lesions followed by thyroid (n=40), other soft tissues (n=27) and salivary gland (n=14). Reactive lymph nodes, colloid goiter, epidermoid cyst and sialadenosis were the predominant diagnosis of lymph nodes, thyroid gland, soft tissues and salivary gland respectively. Highest accuracy, sensitivity and speci city were observed in thyroid gland, salivary gland and soft tissues. However, four false negative results for malignancy were reported in lymph node lesions. Conclusion: Head and neck region swellings are the commonly encountered conditions. FNAC being highly accurate, sensitive and speci c makes it useful and reliable procedure for screening and diagnosis of palpable masses in head and neck region. 

Analgesia before Performing Subarachnoid Block in the Sitting Position in Patients with Proximal Femoral Fracture: A Comparison between Fascia Iliaca Block and Femoral Nerve Block

BACKGROUND

Positioning for subarachnoid block (SAB) in patients with femoral fracture is painful and may remain suboptimal requiring use of large doses of opioids. These patients generally being elderly with multiple comorbidities and frailty are likely to have many undesirable effects of opioids including respiratory depression and confusion.

OBJECTIVE

The objective was to compare the feasibility and effectiveness of fascia iliaca compartment block (FICB) and femoral nerve block (FNB) in reducing pain associated with positioning for subarachnoid block in patients undergoing proximal femoral fracture fixation procedures.

METHOD

Group FICB patients (n=15) received fascia iliaca block with 30 ml of 1.5% lignocaine with adrenaline and group FNB patients (n=15) received femoral nerve block with 15 ml of 1.5% lignocaine with adrenaline. After the study blocks, patients were kept on supine position for at least 20 minutes before shifting them to the operation theatre. Pain was assessed by using visual analog scale values before the block and during the position for subarachnoid block. Time to perform subarachnoid block, quality of positioning and acceptance was recorded.

RESULT

Visual analog scale values during positioning for SAB were lower in FIB group than in FNB (1.0±1.1 versus 2.1±0.8; P< 0.05). Time to perform SAB was shorter in FIB than in FNB (109.6±28.2 seconds versus 134.8±31.9 seconds; P< 0.05). Quality of patient positioning for SAB was comparable between the groups. Patient acceptance was less in group FNB (P< 0.05).

CONCLUSION

Fascia iliaca compartment block provides better analgesia than femoral nerve block in terms of facilitating optimal positioning for subarachnoid block in patients undergoing proximal femoral fracture fixation procedure.

Paediatric Stroke: A Rare Presentation of Iron Deficiency Anemia in a Four Year Old Child

Paediatric stroke is an uncommon syndrome with even lesser annual incidence rates of arterial ischemic stroke in infants and children. In children the diagnosis of stroke is frequently delayed or missed. This is due to subtle and nonspecific clinical presentations, a complicated differential diagnosis and a lack of awareness by physicians and also delay in the seeking of medical attention as in our case. We report you a rare case of a four year old child from remote Nepal who presented to our Out Patient Department after a long gap of around four months after the sudden onset of loss of consciousness and decreased movement of right limbs who after detailed history examination and lab investigations and imaging revealed ischemic stroke due to iron deficiency anemia.

Adenosine deaminase activity in sera of patients with visceral leishmaniasis in Nepal

This longitudinal study was conducted in BP Koirala Institute of Health Sciences (BPKIHS), a Medical University situated in eastern Nepal, between May 2001 and December 2001. The main objective of the study was to identify the role of adenosine deaminase (ADA) activity in patients with visceral leishmaniasis (VL) for management. There was a significant increase in mean ADA activity in sera of 49 patients with VL (323.71±184.51 IU/L) compared with 50 samples of control groups (47.11±24.94 IU/L) from the same endemic area ( P<0.001). ADA activities were found to be significantly decreased (50.35±41.35 IU/L) in follow-up cases ( n = 19) after 30 days with sodium stibogluconate treatment at a dose of 20 mg/kg/day intramuscularly. The fall in the level of ADA (after treatment) in follow-up cases correlated with the cure of disease, as evident from improvement of vital signs and symptoms and the absence of Leishmania donavani bodies in the sera. The study therefore suggests the possibility of using human serum ADA as a convenient marker to evaluate the diagnosis of VL to support the clinical findings, especially in those settings where there is a lack of highly qualified personnel and diagnostic facilities.

Study of Depression, Anxiety and Stress among the Medical Students in two Medical Colleges of Nepal

Background Medical education is intended to prepare graduates for a promoting health and caring for the sick. Medical students are confronted with significant academic, psychological and existential stressors. There is insufficient information regarding psychological morbidity among Nepalese medical students. Objective To determine the prevalence of depression, anxiety and stress, among the medical students in Nepal, and its association with sociodemographic characteristics. Method A cross-sectional questionnaire based study was conducted including all students from first to fifth year of student using convenience method of sampling from Kathmandu University Medical School (KUSMS), Dhulikhel and Manipal College of Medical Sciences (MCOMS), Pokhara, Nepal. Depression, Anxiety and stress were assessed using Depression Anxiety and Stress Scale (DASS). Additional questions regarding demographic variables were also included in the survey. Data analysis was done on Statistical Package for the Social Sciences SPSS version 16. Result A total of 538 students participated in the study giving a response rate of 89.6%. Aamong them 56.5% were from age group 21-25 years, 42.2% were below 20 years and only 1.3% were above 25 years of age. Among them 52% were female and 48% were male. Our study found that the overall prevalence of depression was 29.9%, anxiety was 41.1% and stress was 27% among all participated medical students. Depression was significantly associated (OR 2.23, 95% CI 1.43-3.47, p<0.001) with living condition (living in hostel or rented house). Conclusion The higher level of psychiatric morbidity depression 29.9%, anxiety 41.1% and stress 27% among undergraduate medical students warrants needs for strategic plans to alleviate depression anxiety and the stressors right from the time they join medical school and has to be continued till they finish the course.

Pompe Disease: Cyanosed Hypotonic Infant with Normal Respiratory Rate

Infantile hypotonia or floppy infant is a diagnostic challenge when it presents with other presenting complaints such as fever, cough or diarrhea. Many times the hypotonia goes unnoticed when other symptom covers the hypotonia and child continues to receive the treatment for other symptoms. We report a rare case from Nepal of infantile Pompe disease who presented with the history of fever and cough in the recent earthquake disaster camp at remote part of Sindhupalchowk, Nepal. He was being treated as a case of pneumonia. Pompe disease can be diagnosed clinically by taking detailed history and correlating the clinical findings during the presentation with other symptoms. In our case the normal respiratory rate, reduced Spo2 and presence of crackles dominated the hypotonia and was mistreated as pneumonia. High index of suspicion is necessary in diagnosing Pompe disease.

Cervical pap smear- A prospective study in a tertiary hospital

Background: Cervical cancer is a leading cause of mortality and morbidity among women worldwide and most common gynaecological cancer in developing countries. Papanicolaou smear is a simple and cost effective screening test for cervical cancer. The aim of this study is to evaluate and interpret the cervical pap smear cytology in a tertiary hospital. The interpretation and reporting of the pap smear is based on 2001Bethesda system.Materials and methods: This is a prospective study conducted in a tertiary hospital, Nepal Medical College over a period of two and a half years (January 2013 to June 2015). All cervical pap smears received in the department of Pathology in the study period were included.Results: A total of 4160 cervical pap smears were reported in the study period. Majority of the cases were Negative for Intraepithelial lesion or malignancy (87.9%). Bacterial vaginosis, atrophy and reactive cellular changes associated with inflammation were seen in 5.3%, 2.4% and 1.5% cases respectively.   Epithelial cell abnormalities (0.5%) include Atypical squamous cells of undetermined significance, Low grade squamous intraepithelial lesion and High grade intraepithelial lesion. 88% of Low grade squamous intraepithelial lesion was seen in reproductive age group (20-45 years).Conclusion: Cervical cancer is the most common gynaecological cancer in the developing countries. Pap smear is the simple and cost effective screening tool to detect pre invasive cervical epithelial lesions.

Alternative approaches for studying humanitarian interventions: propensity score methods to evaluate reintegration packages impact on depression, PTSD, and function impairment among child soldiers in Nepal

BACKGROUND

Ethical, logistical, and funding approaches preclude conducting randomized control trials (RCTs) in some humanitarian crises. A lack of RCTs and other intervention research has contributed to a limited evidence-base for mental health and psychosocial support (MHPS) programs after disasters, war, and disease outbreaks. Propensity score methods (PSMs) are an alternative analysis technique with potential application for evaluating MHPS programs in humanitarian emergencies.

METHODS

PSMs were used to evaluate impacts of education reintegration packages (ERPs) and other (vocational or economic) reintegration packages (ORPs) v. no reintegration programs on mental health of child soldiers. Propensity scores were used to determine weighting of child soldiers in each of the three treatment arms. Multiple linear regression was used to estimate adjusted changes in symptom score severity on culturally validated measures of depression, post-traumatic stress disorder (PTSD), and functional impairment from baseline to 1-year follow-up.

RESULTS

Among 258 Nepali child soldiers participating in reintegration programs, 54.7% completed ERP and 22.9% completed ORP. There was a non-significant reduction in depression by 0.59 (95% CI -1.97 to 0.70) for ERP and by 0.60 (95% CI -2.16 to 0.96) for ORP compared with no treatment. There were non-significant increases in PTSD (1.15, 95% CI -1.55 to 3.86) and functional impairment (0.91, 95% CI -0.31 to 2.14) associated with ERP and similar findings for ORP (PTSD: 0.66, 95% CI -2.24 to 3.57; functional impairment (1.05, 95% CI -0.71 to 2.80).

CONCLUSION

In a humanitarian crisis in which a non-randomized intervention assignment protocol was employed, the statistical technique of PSMs addressed differences in covariate distribution between child soldiers who received different integration packages. Our analysis did not demonstrate significant changes in psychosocial outcomes for ERPs and ORPs. We suggest the use of PSMs in evaluating non-randomized interventions in humanitarian crises when non-randomized conditions are not utilized.

Neural stem cell isolation and culture from C57BL/6 mice

INTRODUCTION A widely used in vitro culture, the neurosphere assay (NSA) has provided a means to retrospectively identify neural progenitor cells as well as to determine both their selfrenewal capacity. Objective of study was to isolate and compare growth of the embryonic neuronal stem cell and adult neuronal stem cells in presence of Epidermal Growth Factor (EGF) and Fibroblastic Growth Factor (FGF2).MATERIALS AND METHODS Embryonic neuronal stem cell were collected from cortical plate of dorsal telencephalon of fifteen C57BL/6 transgenic mice using stereoscopic microscope on 11th gestational day (GD). Adult mammalian neuronal stem cells taken from subventricular zone (SVZ) of the lateral ventricles and subgranular layer of the dentate gyrus of the hippocampus were cultured. The growth for the neurosphere was then observed in interval of 24 and 72 hours.RESULT The adult stem cell culture showed few intact cells with high amount of debris and 9% heterogeneous sphere after 24 hours while only 20 % was observed at the end of 72 hours. Higher proliferation rate was observed in embryonic neurospheres than the adult stem cell culture.CONCLUSION Presence of EGF and basic FGF2 is essential for culture of neurospheres.Journal of College of Medical Sciences-Nepal, 2014, Vol.10(2); 1-3

Towards a resolution of the proton form factor problem: new electron and positron scattering data

There is a significant discrepancy between the values of the proton electric form factor, G(E)(p), extracted using unpolarized and polarized electron scattering. Calculations predict that small two-photon exchange (TPE) contributions can significantly affect the extraction of G(E)(p) from the unpolarized electron-proton cross sections. We determined the TPE contribution by measuring the ratio of positron-proton to electron-proton elastic scattering cross sections using a simultaneous, tertiary electron-positron beam incident on a liquid hydrogen target and detecting the scattered particles in the Jefferson Lab CLAS detector. This novel technique allowed us to cover a wide range in virtual photon polarization (ϵ) and momentum transfer (Q(2)) simultaneously, as well as to cancel luminosity-related systematic errors. The cross section ratio increases with decreasing ϵ at Q(2)=1.45  GeV(2). This measurement is consistent with the size of the form factor discrepancy at Q(2)≈1.75  GeV(2) and with hadronic calculations including nucleon and Δ intermediate states, which have been shown to resolve the discrepancy up to 2-3  GeV(2).

Longitudinal target-spin asymmetries for deeply virtual compton scattering

A measurement of the electroproduction of photons off protons in the deeply inelastic regime was performed at Jefferson Lab using a nearly 6 GeV electron beam, a longitudinally polarized proton target, and the CEBAF Large Acceptance Spectrometer. Target-spin asymmetries for ep→e^{'}p^{'}γ events, which arise from the interference of the deeply virtual Compton scattering and the Bethe-Heitler processes, were extracted over the widest kinematics in Q^{2}, x_{B}, t, and ϕ, for 166 four-dimensional bins. In the framework of generalized parton distributions, at leading twist the t dependence of these asymmetries provides insight into the spatial distribution of the axial charge of the proton, which appears to be concentrated in its center. These results also bring important and necessary constraints for the existing parametrizations of chiral-even generalized parton distributions.

Strangeness suppression of qq creation observed in exclusive reactions

We measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: ΛK(+), pπ(0), and nπ(+), with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization, we extract qq creation probabilities for the first time in exclusive two-body production, in which only a single qq pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.

Comparative study of aspiration and non-aspiration cytology of palpable breast lumps and correlation with histopathology

Background: Breast lump is one of the most common presentations in surgical outpatient departments with anxiety regarding a possible malignancy. Hence a quick diagnosis of a lump in the breast is essential. Fine needle aspiration cytology is an ideal initial diagnostic modality in breast lumps. There is an alternative method of performing needle aspiration, known as fine needle capillary cytology where the specimen is obtained using just a needle without aspiration.Materials and Methods: This hospital-based cross sectional analytical study was carried out in Department of Pathology in National Academy of Medical Sciences, Bir Hospital for one year. The objective of this study was to compare aspiration and non-aspiration cytology of palpable breast lumps and correlation with histopathology.Results: The five criteria scored for each technique were background blood, amount of cellular material, cellular degeneration, cellular trauma and architectural preservation. Compared to fine needle aspiration cytology, fine needle capillary cytology yields less bloody smears with minimal degenerative changes and offers more diagnostically superior specimens. Fine needle aspiration cytology, on the other hand, gives a good yield of diagnostic material.Conclusion: Fine needle aspiration cytology and fine needle capillary cytology are quick, easy, safe and cost-effective techniques. . A high sensitivity and specificity of cytological diagnosis in this study proves that it is comparable to final histology report in its diagnostic efficiency. Thus, fine needle aspiration cytology is a very important preliminary diagnostic test in palpable breast lumps and the results show a high degree of correlation with the final histopathology report.DOI: http://dx.doi.org/10.3126/jpn.v4i8.11501 Journal of Pathology of Nepal; Vol.4,No. 8 (2014) 639-643

Correlation of FNAC and histopathology in diagnosis of salivary gland lesions

Background: Value of fine needle aspiration cytology in preoperative diagnosis of salivary gland lumps has been established in various studies. This study aims to calculate sensitivity, specificity accuracy of FNAC, correlate FNAC findings with histopathology and find out reasons for common diagnostic pitfalls in FNAC.Materials and methods: This study was performed in 67 patients that presented with salivary gland lumps at Department of pathology, Tribhuvan University Teaching Hospital, Institute of medicine, Kathmandu, Nepal from January 2009 to June 2010. FNAC was performed and was correlated with histopathological diagnosis to judge the sensitivity, specificity and accuracy of FNAC.Results: Out of 36 cases there was cyto-histological correlation in 28 cases. Pleomorphic adenoma was the most frequent lesion in this study. Parotid gland was the most common site affected by salivary gland lesions. The sensitivity, specificity and accuracy for non-neoplastic lesions was 100%, 89.28%, 91.67%, for benign neoplasms was 100%, 86.95%, 91.67% and for malignant neoplasms was 57.14%, 100%, 83.33% respectively.Conclusion: FNAC is a useful tool in preoperative diagnosis of salivary gland lesions and can be crucial for the management of the patient. Aspiration and reporting of salivary gland lesions demands a competent pathologist who considers all the possible diagnostic pitfalls in mind.DOI: http://dx.doi.org/10.3126/jpn.v4i8.11593 Journal of Pathology of Nepal; Vol.4,No. 8 (2014) 654-657

Significance of analysing chemical composition of renal stones

Background: This article aims to decipher chemical composition of renal stones and briefly outline laboratory tests and dietary habitual changes aimed at preventing stone recurrence. It is based on analysis of 95 renal stones received in a private lab in Kathmandu over a period of 1 year. Materials and Methods: Renal stones were analysed using simple qualitative biochemical tests.The stones were checked for presence of calcium, magnesium, ammonium, oxalate, phosphate, uric acid, cystine and carbonate. Results: Calcium was present in 97.8%, ammonium was present in 98.9%, phosphate was present in 25.2%, uric acid was present in 17.8%, magnesium was present in 10.5%, carbonate was present in 2.1% and cystine was not present in any of the stones. Most of the stones were composed of mixture of two or more than two of the above mentioned elements. Conclusion: Most stones are mixture of more than two cations and anions. Studies on larger test samples and if possible in correlation with routine examination of urine and urinary electrolyte excretion in a 24 hr urine sample would further aid in efforts aimed at preventing stone recurrence. DOI: http://dx.doi.org/10.3126/jpn.v4i7.10314 Journal of Pathology of Nepal (2014) Vol. 4, 560-564  

A single blind controlled study comparing bipolar elecrocautery tonsillectomy to cold dissection method in pediatric age groups

Background: Tonsillectomy is one of the most commonly performed operations in otolaryngology. There are many proven methods of tonsillectomy, including cold dissection and bipolar electrocautery. Objective: To compare bipolar elecrocautery tonsillectomy with cold dissection method in pediatric age groups. Methods: Single blind controlled study to compare bipolar technique against the conventional dissection/snare technique. Results: The average amount of bleeding on electrocautery side was 4.07ml and on the cold dissection side was 14.58 ml. The mean time of operation for electrocautery and cold dissection was 12.04 and 16.57 minutes respectively. On the second post operative day, 35% of the patients complained of pain on the cauterized side, 30% complained of more pain on the dissection side while 35 % experienced equal pain on both sides. Post-operative complication such as hemorrhage was not seen in both the techniques employed. Conclusion: In the present study, bipolar diathermy tonsillectomy had advantages in having less post-operative time and blood loss intraoperatively but patients experience slightly more pain than cold dissection. DOI: http://dx.doi.org/10.3126/hren.v11i3.9651 Health Renaissance 2013;11(3):270-272

Hard two-body photodisintegration of 3He

We have measured cross sections for the γ(3)He → pd reaction at photon energies of 0.4-1.4 GeV and a center-of-mass angle of 90°. We observe dimensional scaling above 0.7 GeV at this center-of-mass angle. This is the first observation of dimensional scaling in the photodisintegration of a nucleus heavier than the deuteron.

Propofol sedation during spinal anaesthesia- a dose finding study

BACKGROUND

It is important to be able to measure and maintain a specific sedation level to compare outcomes of different levels of sedation during anesthesia and the aims include general patient comfort, freedom from specific discomfort, and some amnesia for both the block procedure and the surgical operation, in order to meet the patient preference and safety. In this prospective randomized clinical study, we compared the three different infusion doses of propofol.

OBJECTIVE

To find out the appropriate infusion dose of propofol for optimal sedation without causing undue side effects in patients undergoing spinal anaesthesia.

METHOD

One hundred twenty patients ASA PS I-II were randomly allocated to three groups 1, 2 and 3 receiving propofol infusion at the rate of 25, 50 and 75 microgram/kg/min with concentration of (0.5%), (1%) and (1.5%) respectively. They were observed for sedation score, hemodynamic parameters and satisfaction level. The adverse effects like respiratory depression, nausea and vomiting score were assessed.

RESULT

Median sedation score increased in a dose dependent manner, with significantly higher scores in group 2 and 3 compared with group 1. Hemodynamic parameters were better in group 1 and 2 as judged by mephentermine requirement. The awakening time after stoppage of infusion was significantly delayed in group 3 (p < 0.001). Respiratory depression, nausea and vomiting were comparable clinically. Almost three fourth of the patients were satisfied with the techniques used.

CONCLUSION

Propofol infusion at the rate of 50 mcg/kg/min for sedation in spinal anaesthesia provides optimal sedation, early awakening and excellent satisfaction level in the postoperative period.

Interpretation of bone marrow aspiration in hematological disorder

Background: Hematological disorders are quite frequent in all age group. Most of this hematological disorder first present as anemia. Bone Marrow Aspiration plays a major role in the diagnosis of its underlying cause. The aim of this study was to analyze the causes of hematological disorders, its spectrum and to interprete the bone marrow aspiration findings.Materials and Methods: This was a retrospective and prospective study carried out in the department of Pathology of Nepal Medical College in a period of two years. (July 2010 - June 2012). Bone marrow examination of 57 cases of suspected hematological disorders was carried out. All details of the patients were obtained from the record file in the department of pathology.Results: Out of 57 cases of bone marrow aspiration, erythroid hyperplasia was seen in 12 cases (21%). Megaloblastic anemia was seen in 7 cases (12.3%) and microcytic anemia was seen in 4 cases (7%). There were 6 cases (10.5%) of Idiopathic Thrombocypenic Purpura. Acute leukemia was diagnosed in 7 cases (12.3%) and among this acute myeloid leukemia (10.5%) was more common than acute lymphoid leukemia (1.8%). Myelodysplastic syndrome and multiple myeloma was seen in 3.5 % cases each. Aplastic anemia and kalaazar was seen in 5.3% and 1.8% cases respectively.Conclusion: Bone marrow examination is an important step to arrive at the confirmatory diagnosis of many hematological disorders.Journal of Pathology of Nepal (2012) Vol. 2, 309-312DOI: http://dx.doi.org/10.3126/jpn.v2i4.6885

Measurement of exclusive π(0) electroproduction structure functions and their relationship to transverse generalized parton distributions

Exclusive π(0) electroproduction at a beam energy of 5.75 GeV has been measured with the Jefferson Lab CLAS spectrometer. Differential cross sections were measured at more than 1800 kinematic values in Q(2), x(B), t, and ϕ(π), in the Q(2) range from 1.0 to 4.6  GeV(2), -t up to 2  GeV(2), and x(B) from 0.1 to 0.58. Structure functions σ(T)+ϵσ(L), σ(TT), and σ(LT) were extracted as functions of t for each of 17 combinations of Q(2) and x(B). The data were compared directly with two handbag-based calculations including both longitudinal and transversity generalized parton distributions (GPDs). Inclusion of only longitudinal GPDs very strongly underestimates σ(T)+ϵσ(L) and fails to account for σ(TT) and σ(LT), while inclusion of transversity GPDs brings the calculations into substantially better agreement with the data. There is very strong sensitivity to the relative contributions of nucleon helicity-flip and helicity nonflip processes. The results confirm that exclusive π(0) electroproduction offers direct experimental access to the transversity GPDs.

Cardiovascular health risk behavior among medical students in a teaching hospital

BACKGROUND

Medical students are the health care providers of tomorrow. The health behaviors that are acquired in early life and in medical school will influence their future acceptance and practice of preventive strategies including their interaction with patients. The main objective of our study was to assess the health behavior and perceptions of medical students in relation to cardiovascular diseases.

METHODS

A cross sectional descriptive study was done among 159 medical students of Institute of Medicine, Tribhuvan University Teaching Hospital in Kathmandu, Nepal from September 2010 to December 2010. Data collection was done using a self administered questionnaire.

RESULTS

The mean age was 22.9±2.5 yrs and a male:female ratio of 2.1:1. Thirty Five (22%) were current smokers, 56 (35%) indulged in episodic heavy drinking, 25 (15.7%) were overweight, 34 (21%) engaged in recommended amount of physical activitiy,58 (33%) regulated fat consumption and 46 (28%) regulated salt consumption. Regarding developing cardiovascular disease in the future, 85(53%) showed concern but only 33 (38%) of these adopted preventive practices. 101 (64%) believed that their medical school life had a harmful effect on their health.

CONCLUSIONS

Our study shows a high prevalence of cardiovascular risk behaviours among the medical students. This highlights the urgency that we must take to promote preventive knowledge and practices among medical students. This will help them to become prevention oriented clinicians in future to counter the increasing burden of cardiovascular diseases in this part of the world.

Prevalence of Dental Caries in 5 – 6 Years and 12 – 13 Years Age Group of School Children of Kathmandu Valley

Introduction: Dental caries is one of the most common conditions affecting the general health of children. The present study was carried out among school children of Kathmandu valley to determine the prevalence of dental caries in two age groups. Methods: The study was conducted from December 2007 to May 2008. The age of the school children of the study was divided into two group: 5 - 6 years and 12 - 13 years. A stratifi ed cluster sampling with proportional allocation was used while grouping the subjects. The dental status examination was done with the help of trained dentists. Decayed, missed and fi lled teeth index and decayed, missed and fi lled surfaces index (dmft for primary dentition and DMFT for permanent dentition) were used as the standard tools for the determination of prevalence. Results: A total of 638 students (325 of age group 12 - 13 years and 313 of age group 5 - 6 years) from 30 different schools of the Kathmandu valley were included in the study. The caries status was found higher in the age group of 5 - 6 years than in the 12 - 13 years and it was found to be statistically signifi cant (p < 0.001). The dmfs and caries percentage of the age group 5 - 6 years and the DMFS and caries percent of the 12 - 13 years was found to be 3.79, 69 % and 1.6, 53.23 % respectively. The dmft/dmfs value was found to be signifi cant according to the districts in the 5 - 6 years age group whereas the DMFS was found statistically signifi cant among the sexes of the 12 - 13 years age group. Conclusions: The caries percentage was found to be above the recommended level of the World Health Organization. However, the DMFS and DMFT values were within the WHO level. Keywords: Children, dental caries, DMF index.

Signet ring cell carcinoma of the gallbladder: a case report

Carcinoma of the gall bladder is the most common biliary tract tumor with higher incidence in females and increasing age. The risk is significantly higher in cholelithiasis. Signet ring cell carcinoma is a rare form of mucinous adenocarcinoma and has a worse prognosis. Early diagnosis is rare. We report a case of signet ring cell carcinoma of the gall bladder in a 70 years old female patient. The gross finding was yellowish white mass measuring 4 x 3.5 cm on cut surface of the gall bladder along with thickened wall. Histopathological examination of the specimen shows the sheets of signet ring cells with lateral spread through the lamina propria and large amount of extracellular mucin. There was metastasis in the retroperitoneum and mesenteric lymph node. The tumor was stage IV (according to TNM staging). Patient died 20th post operative day. Since very few cases have been reported, information regarding the behavior and prognosis of gall bladder carcinoma is limited. However it has been seen that stage III and IV carcinoma usually have worse prognosis.

Prevalence of dental caries in 5 - 6 years and 12 - 13 years age group of school children of Kathmandu valley

INTRODUCTION

Dental caries is one of the most common conditions affecting the general health of children. The present study was carried out among school children of Kathmandu valley to determine the prevalence of dental caries in two age groups.

METHODS

The study was conducted from December 2007 to May 2008. The age of the school children of the study was divided into two group: 5 - 6 years and 12 - 13 years. A stratified cluster sampling with proportional allocation was used while grouping the subjects. The dental status examination was done with the help of trained dentists. Decayed, missed and filled teeth index and decayed, missed and filled surfaces index (dmft for primary dentition and DMFT for permanent dentition) were used as the standard tools for the determination of prevalence.

RESULTS

A total of 638 students (325 of age group 12 - 13 years and 313 of age group 5 - 6 years) from 30 different schools of the Kathmandu valley were included in the study. The caries status was found higher in the age group of 5 - 6 years than in the 12 - 13 years and it was found to be statistically significant (p < 0.001). The dmfs and caries percentage of the age group 5 - 6 years and the DMFS and caries percent of the 12 - 13 years was found to be 3.79, 69 % and 1.6, 53.23 % respectively. The dmft/dmfs value was found to be significant according to the districts in the 5 - 6 years age group whereas the DMFS was found statistically significant among the sexes of the 12 - 13 years age group.

CONCLUSION

The caries percentage was found to be above the recommended level of the World Health Organization. However, the DMFS and DMFT values were within the WHO level.

Topical anaesthesia of the vocal cords by nebulized lignocaine inhalation to facilitate fi breoptic nasotracheal intubation in a head-size parotid tumour patient

This case report describes a successful fi breoptic naso-tracheal intubation in a patient with difficult airway due to a nearly head-size right parotid swelling. Nasal fi breoptic intubation was performed by maintaining spontaneous breathing under propofol infusion at a dose of 25 mcg/kg/hour and topical anaesthesia of vocal cords by using oxygen (6 l/min) fl ow to nebulize 4 % lignocaine from the side port of the fi breoptic bronchoscope. The topical anaesthesia was achieved by keeping the scope in close proximity of the vocal cords and in the centre of view of the scope. This case emphasizes the possibility of fi breoptic intubation in a sedated yet spontaneously breathing patient by allowing inhalation of nebulized lignocaine during fi breoptic intubation.  Keywords: fibreoptic intubation, naso-tracheal intubation, nebulized lignocaine, spontaneous breathing, topical anaesthesia.

Topical anaesthesia of the vocal cords by nebulized lignocaine inhalation to facilitate fibreoptic nasotracheal intubation in a head-size parotid tumour patient

This case report describes a successful fibreoptic naso-tracheal intubation in a patient with difficult airway due to a nearly head-size right parotid swelling. Nasal fibreoptic intubation was performed by maintaining spontaneous breathing under propofol infusion at a dose of 25 mcg/kg/hour and topical anaesthesia of vocal cords by using oxygen (6 l/min) flow to nebulize 4% lignocaine from the side port of the fibreoptic bronchoscope. The topical anaesthesia was achieved by keeping the scope in close proximity of the vocal cords and in the centre of view of the scope. This case emphasizes the possibility of fibreoptic intubation in a sedated yet spontaneously breathing patient by allowing inhalation of nebulized lignocaine during fibreoptic intubation.