Journey of a survivor of near drowning, polymicrobial pneumonia, and acute respiratory distress syndrome.

This article discusses a woman who collapsed and landed in a puddle of water in a park near a horse trail. Her rescue and resuscitation started an extraordinary effort by her body to heal from multiple insults. This case study highlights the diagnosis and support of polymicrobial pneumonia secondary to near drowning and the multisystem complications throughout the 3-month hospitalization.

The role of vitamin D deficiency in sepsis and potential therapeutic implications.

Recent studies have shown that vitamin D has important functions besides bone and calcium homeostasis. Cells of the innate and adaptive immune system express vitamin D receptors and respond to stimulation by 1, 25-dihydroxyvitamin D. Patients with sepsis have a high mortality rate as well as a high prevalence of vitamin D deficiency.

Vitamin D status and antimicrobial peptide cathelicidin (LL-37) concentrations in patients with active pulmonary tuberculosis.

Background: Vitamin D insufficiency is common in industrialized and developing nations. Recent studies have shown that vitamin D insufficiency is associated with a higher risk of active tuberculosis. Laboratory studies provided a mechanism for this link on the basis of findings that vitamin D metabolites regulate the expression of cathelicidin (LL-37), which is an endogenous antimicrobial peptide with activity against Mycobacterium tuberculosis.

Rhodococcus equi infection.

Rhodococcus equi is a veterinary pathogen that can cause substantial morbidity in patients that are immunocompromised and are occupationally and recreationally exposed to farming, livestock, and dry soil environments. Although the clinical spectrum of disease associated with R equi is broad, pulmonary involvement is a predominant feature in most cases. We present a case of occupationally acquired R equi pneumonia and mediastinal lymphadenitis in a patient that has had a renal transplant and is in receipt of a stable immunosuppression regimen.

Vitamin D for treatment and prevention of infectious diseases: a systematic review of randomized controlled trials.

Objective: To review the existing human controlled intervention studies of vitamin D as adjunctive therapy in settings of infection and provide recommendations for design and implementation of future studies in this field on the basis of the evidence reviewed.

Methods: We conducted a systematic review of randomized controlled clinical trials that studied vitamin D for treatment or prevention of infectious diseases in humans. Studies from 1948 through 2009 were identified through search terms in PubMed and Ovid MEDLINE.

Vitamin D as adjunctive therapy in refractory pulmonary tuberculosis: a case report.

Vitamin D regulates calcium homeostasis in the body and may play a major role in regulating immune responses to tuberculosis (TB). Pilot studies suggest that vitamin D supplementation may improve outcomes in pulmonary TB (PTB), but clinical evidence using vitamin D in TB treatment is limited. We present a case of vitamin D deficiency in a woman with refractory drug-susceptible PTB.

Alterations in vitamin D status and anti-microbial peptide levels in patients in the intensive care unit with sepsis.

Background: Vitamin D insufficiency is common in hospitalized patients. Recent evidence suggests that vitamin D may enhance the innate immune response by induction of cathelicidin (LL-37), an endogenous antimicrobial peptide produced by macrophages and neutrophils. Thus, the relationship between vitamin D status and LL-37 production may be of importance for host immunity, but little data is available on this subject, especially in the setting of human sepsis syndrome and other critical illness.