Nutritional status and its associated factors among the geriatric population in outpatient clinics of a tertiary care hospital in Karachi, Pakistan.

Context: Elderly malnourishment remains a largely unexplored area, despite having a significant effect on the level of mortality and morbidity. This study aims to explore the level of malnourishment and identify those at risk of malnourishment among the elderly population presenting to a teaching hospital in Karachi. Aims: To assess nutritional status and its associated factors among the elderly population. Settings and Design: This study was conducted in outpatient clinics of family medicine at a teaching hospital and its outreach primary care centres from December 2020 to December 2021. The study design was cross-sectional. Materials and Methods: The prevalence of malnourishment and at risk of malnourishment with its associated factors were assessed using the Mini-Nutritional Assessment (MNA) scale as a screening tool among the elderly population (65 years and above) presenting to the family medicine OPDs of a teaching hospital. Statistical Analysis: Data were analysed using the Statistical Package for the Social Sciences (SPSS) version 21. Results: A total of 191 patients were recruited into the study, and the majority of them were males (66.5%). Median age and body mass index (BMI) of participants were 70 (IQR = 74-65) years and 24 (IQR = 27-21) kg/m2, respectively. The median MNA scores were 23.5 (IQR = 20.5-26). A total of 92 (48.2%) participants were found to have a normal nutritional status, 81 (42.4%) were found to be at a risk of malnourishment, and 18 (9.4%) were malnourished. On the multivariable regression model, BMI and ability to manage finances were significantly associated with malnourishment. Conclusion: This study shows an alarmingly high rate of the elderly population at risk of developing malnourishment, and financial independence and increasing BMI were associated with a decreased risk of malnourishment.

Secondary attack rate of COVID-19 among contacts and risk factors, Tamil Nadu, March-May 2020: a retrospective cohort study.

OBJECTIVE: To describe the characteristics of contacts of patients with COVID-19 case in terms of time, place and person, to calculate the secondary attack rate (SAR) and factors associated with COVID-19 infection among contacts. DESIGN: A retrospective cohort study SETTING AND PARTICIPANTS: Contacts of cases identified by the health department from 14 March 2020to 30 May 2020, in 9 of 38 administrative districts of Tamil Nadu. Significant proportion of cases attended a religious congregation. OUTCOME MEASURE: Attack rate among the contacts and factors associated with COVID-19 positivity. RESULTS: We listed 15 702 contacts of 931 primary cases. Of the contacts, 89% (n: 14 002) were tested for COVID-19. The overall SAR was 4% (599/14 002), with higher among the household contacts (13%) than the community contacts (1%). SAR among the contacts of primary cases with congregation exposure were 5 times higher than the contacts of non-congregation primary cases (10% vs 2%). Being a household contact of a primary case with congregation exposure had a fourfold increased risk of getting COVID-19 (relative risk (RR): 16.4; 95% CI: 13 to 20) than contact of primary case without congregation exposure. Among the symptomatic primary cases, household contacts of congregation primaries had higher RR than household contacts of other cases ((RR: 25.3; 95% CI: 10.2 to 63) vs (RR: 14.6; 95% CI: 5.7 to 37.7)). Among asymptomatic primary case, RR was increased among household contacts (RR: 16.5; 95% CI: 13.2 to 20.7) of congregation primaries compared with others. CONCLUSION: Our study showed an increase in disease transmission among household contacts than community contacts. Also, symptomatic primary cases and primary cases with exposure to the congregation had more secondary cases than others.

Differential expression of Helios, Neuropilin-1 and FoxP3 in head and neck squamous cell carcinoma (HNSCC) patients.

In recent years, studies have begun to explore the immune involvement in head and neck tumors. Advanced stage head and neck squamous cell carcinoma (HNSCC) has a poor prognosis with low survival rates with high level of immune infiltrates. Tregs (regulatory T cells) play a crucial role in constructing an immunosuppressive tumor microenvironment. In the present study, we highlighted specific Treg markers and its factors in HNSCC solid tumors and peripheral blood of cancer patients. By histopathology and immunofluorescence staining, we observed differential expression of CD4, CD25, Foxp3, Helios and Neuropilin-1. Further, we analyzed the expression of Foxp3, Helios, Neuropilin-1 and GARP by qPCR and flow cytometry in whole blood and found to be elevated in HNSCC patients in comparison with healthy donors. Additionally, IFN-γ, TGF-ß, IL-6, IL-2, IL-10 and TNF-α expressions were also found to be relatively increased in the head and neck cancer patients when compared with healthy donors. Our findings emphasize that Tregs may be involved in promoting tumor progression. Helios and Neuropilin-1 could be potent markers in identifying subsets of Tregs. Association of soluble factors could sculpture the activity of Tregs. With further research, Treg markers and its associated soluble factors could be employed to block Tregs trafficking to the tumor, thus enlightening a potential strategy for targeting human cancers.

A Viable Treatment Alternative in Distal Extension Cases: A Case Report.

Dentures requiring support from teeth, the mucosa and the underlying alveolar ridges are subjected to many forces that adversely effect the abutment teeth and the residual ridges during functional and parafunctional activity. A number of designs of the framework and the direct retainers were used to improve the comfort and acceptance of the patient wearing a removable partial denture. Attachment retained removable partial denture is one of the viable treatment alternative through which significant number of patients could be benefited. In this particular case of distal extension, attachment retained removable partial denture was chosen as a treatment modality. This article provides an overview and a simplified approach to this treatment through a case report and the criteria followed for selection of the particular attachments for treating the patient.

Helicobacter pylori thioredoxin is an arginase chaperone and guardian against oxidative and nitrosative stresses.

The gastric human pathogen Helicobacter pylori faces formidable challenges in the stomach including reactive oxygen and nitrogen intermediates. Here we demonstrate that arginase activity, which inhibits host nitric oxide production, is post-translationally stimulated by H. pylori thioredoxin (Trx) 1 but not the homologous Trx2. Trx1 has chaperone activity that renatures urea- or heat-denatured arginase back to the catalytically active state. Most reactive oxygen and nitrogen intermediates inhibit arginase activity; this damage is reversed by Trx1, but not Trx2. Trx1 and arginase equip H. pylori with a "renox guardian" to overcome abundant nitrosative and oxidative stresses encountered during the persistence of the bacterium in the hostile gastric environment.