Vitamin D Status among Women in a Rural District of Nepal: Determinants and Association with Metabolic Profile—A Population-Based Study

Hypovitaminosis D is prevalent worldwide, and especially in South-Asia. According to the Institute of Medicine (IOM), 25(OH)D levels below 30 nmol/L are defined as vitamin D deficiency (VDD) and levels between 30–50 nmol/L as insufficiency (VDI). Besides its role in calcium homeostasis, it has been postulated that vitamin D is involved in metabolic syndrome. Given the scarcity of data on vitamin D status in Nepal, we aimed to examine the prevalence of VDD and VDI, as well as the determinants and association with metabolic parameters (lipids, HbA1c), in a cohort of women in rural Nepal. Altogether, 733 women 48.5 ± 11.7 years of age were included. VDD and VDI were observed in 6.3 and 42.4% of the participants, respectively, and the prevalence increased by age. Women reporting intake of milk and eggs > 2 times weekly had higher 25(OH)D levels than those reporting intake < 2 times weekly. Women with vitamin D levels < 50 nmol/L displayed higher levels of cholesterol, LDL-cholesterol, triglycerides, and HbA1c. Additionally, a regression analysis showed a significant association between hypovitaminosis D, dyslipidemia, and HbA1c elevation. In conclusion, VDI was prevalent and increased with age. Milk and egg intake > 2 times weekly seemed to decrease the risk of VDI. Moreover, hypovitaminosis D was associated with an adverse metabolic profile.     

The Bhaktapur eye study: ocular trauma and antibiotic prophylaxis for the prevention of corneal ulceration in Nepal

AIMS: To determine the incidence of ocular trauma and corneal ulceration in the district of Bhaktapur in Kathmandu Valley, and to determine whether or not topical antibiotic prophylaxis can prevent the development of ulceration after corneal abrasion. METHODS: A defined population of 34 902 individuals was closely followed prospectively for 2 years by 81 primary eye care workers who referred all cases of ocular trauma and/or infection to one of the three local secondary eye study centres in Bhaktapur for examination, treatment, and follow up by an ophthalmologist. All cases of ocular trauma were documented and treated at the centres. Individuals with corneal abrasion confirmed by clinical examination who presented within 48 hours of the injury without signs of corneal infection were enrolled in the study and treated with 1% chloramphenicol ophthalmic ointment to the injured eye three times a day for 3 days. RESULTS: Over the 2 year period there were 1248 cases of ocular trauma reported in the population of 34 902 (1788/100 000 annual incidence) and 551 cases of corneal abrasion (789/100 000 annual incidence). The number of clinically documented corneal ulcers was 558 (799/100 000 annual incidence). Of the 442 eligible patients with corneal abrasion enrolled in the prophylaxis study, 424 (96%) healed without infection, and none of the 284 patients who were started on treatment within 18 hours after the injury developed ulcers. Four of the 109 patients (3.7%) who presented 18-24 hours after injury developed infections, and 14 (28.6%) of the 49 patients who presented 24-48 hours subsequently developed corneal ulceration. CONCLUSIONS: Ocular trauma and corneal ulceration are serious public health problems that are occurring in epidemic proportions in Nepal. This study conclusively shows that post-traumatic corneal ulceration can be prevented by topical application of 1% chloramphenicol ophthalmic ointment in a timely fashion to the eyes of individuals who have suffered a corneal abrasion in a rural setting. Maximum benefit is obtained if prophylaxis is started within 18 hours after injury.     

Managing the Injury Burden in Nepal

Nepal loses about 530,000 disability adjusted life years (DALYs) per year to injury, predominantly due to falls. It takes 30,000 Nepali rupees (NR), or approximately US$430 at 70 rupees per $US saved per DALY to achieve primary prevention and 6000 NR per DALY if we invest in hospitals, versus 1000 NR invested in prehospital care, because simpler less expensive actions performed early have a greater impact on outcome than more complex measures later. A system for prehospital services was planned for medical emergencies at a national level meeting at the Medical University of Nepal to promote healthcare to victims in inaccessible regions by empowered or enlightened citizens. Feasible actions for common emergencies were defined and a tutorial required to help the majority of such victims was created and packaged. The knowledge and attitude component of the tutorial will be delivered through a web site to citizens motivated to learn and help with emergencies. The knowledge will be tested through a net-based Multiple Choice Questions (MCQ) test. Practical training in medical triage skills will be provided to those who qualify for the test at the University or its designated affiliates. A mobile phone-based information system will be created and used to make these enlightened citizens available to the victim at the site/time of the emergency. Each author certifies that he or she has no commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article.

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Stroma formation and angiogenesis by overexpression of growth factors,cytokines, and proteolytic enzymes in human skin grafted to SCID mice

Reorganization of skin during wound healing, inflammatory disorders, or cancer growth is the result of expression changes of multiple genes associated with tissue morphogenesis. We wanted to identify proteins involved in skin remodeling and select those that may be targeted for agonistic or antagonist therapeutic approaches in various disease processes. Full-thickness human skin was grafted to severe combined immunodeficient mice and injected intradermally with 38 different adenoviral vectors inserted with 37 different genes coding for growth factors, cytokines, proteolytic enzymes and their inhibitors, adhesion receptors, oncogenes, and tumor suppressor genes. Responses were characterized for infiltration of inflammatory cells, vascular density, matrix formation, fibroblast-like cell proliferation, and epidermal hyperplasia. Of the 17 growth factor vectors, 16 induced histological changes in human skin. Members of the VEGF and angiopoietin families induced neovascularization. PDGFs and TGF-betas stimulated connective tissue formation, and the chemokines IL-8 and MCP-1 attracted inflammatory neutrophils and monocytes, respectively. The serine protease uPA induced a vascular response similar to that of VEGF. Vectors with adhesion receptors, oncogenes and tumor suppressor genes had, with few exceptions, little effects on skin architecture. The overall results suggest that adenoviral vectors can effectively remodel the architecture of human skin for studies in morphogenesis, inflammatory skin disorders, wound healing, and cancer development.     

Mesenteric vein thrombosis in a patient heterozygous for factor Ⅴ Leiden and G20210A prothrombin genotypes

Mesenteric venous thrombosis(MVT)is a rare but life threatening form of bowel ischemia.It is implicated in 6%-9% of all cases of acute mesenteric ischemia.The proportion of patients with primary(or idiopathic)MVT varies from 0% to 49%,with a decrease in frequency secondary to more recent availability of newer investigations for hypercoagulability.The presence of factor Ⅴ Leiden(FVL)and prothrombin G20210A mutations(PGM)have been well documented in these cases.However,there have been scarce case reports describing MVT in heterozygotes of both these mutations occurring simultaneously and its implications on long term management.Our case describes acute MVT in a previously asymptomatic young patient with no prior history of venous thromboembolism.The patient was found to be heterozygous for FVL and PGM and treated with lifelong anticoagulation with warfarin(goal international normalized ratio:2-3)and avoidance of hormonal contraceptives.