Leptospirosis is a zoonotic disease with a worldwide distribution affecting most mammalian species. Clinical leptospirosis is common in dogs but appears to be rare in cats. Both dogs and cats, however, can shed leptospires in the urine. This is problematic as it can lead to exposure of humans. The control of leptospirosis, therefore, is important not only from an animal but also from a public health perspective. The aim of this consensus statement is to raise awareness of leptospirosis and to outline the current knowledge on the epidemiology, clinical features, diagnostic tools, prevention and treatment measures relevant to canine and feline leptospirosis in Europe.

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European consensus statement on leptospirosis in dogs and cats

Leptospirosis is a re-emerging zoonosis occurring as large outbreaks throughout the world caused by Leptospira interrogans. The incidence of pulmonary involvement in leptospirosis has been reported to be increasing in the last years, affecting up to 70% of the patients. Alveolar hemorrhage presented as dyspnea and hemoptysis is the main pulmonary manifestation. The emergence of massive hemoptysis and acute respiratory distress syndrome has characterized the recent changes reported in the clinical patterns of leptospirosis. The pulmonary involvement has been emerged as a serious life threat, becoming the main cause of death due to leptospirosis in some countries. In this review we present the main clinical and pathological manifestations of pulmonary involvement in leptospirosis, with special focus on recent data concerning the pathophysiological mechanisms underlying lung injury.

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Pathology and pathophysiology of pulmonary manifestations in leptospirosis

Systemic lupus erythematosus is a common chronic autoimmune disorder causing injury to many organ systems. Cardiac complications of lupus affect most parts of the heart. These include pericarditis, myocarditis, endocarditis and coronary artery disease. While many histopathological findings in lupus-related cardiac diseases are non-specific, there are a few important findings which pathologists should be aware of. This review provides pathological descriptions of these entities.

Cardiac pathology of systemic lupus erythematosus.

Systemic lupus erythematosus.

Background: This case series analyses the beneficial effect of methylprednisolone in pulmonary leptospirosis, which usually has an aggressive course and grave outcome. Methods: 30 patients of pulmonary leptospirosis were evaluated. The initial 13 patients did not receive corticosteroids while the remaining 17 all received bolus methylprednisolone one gram intravenously for three days followed by oral prednisolone 1 mg/kg for seven days, on the basis of occasional case reports of benefit in pulmonary leptospirosis. APACHE III and lung injury scores of similar severity were considered while comparing outcomes in those who received methylprednisolone with those who did not. Results: Dyspnoea and haemoptysis were the commonest symptoms in those with pulmonary manifestations. Overall mortality was 18% (3 of 17) in patients who received methylprednisolone, as compared with 62% (8 of 13 patients) in those who did not (p 2.5), five of eight patients survived in the subgroup with corticosteroids (37% mortality) while only one of nine patients survived in the group that did not receive corticosteroids (89% mortality). Corticosteroids affected outcome only if given within the first 12 hours after the onset of pulmonary manifestations. Mortality seemed to correlate with the APACHE scores, and number of quadrants affected on chest radiographs, more than with blood gas pressures. Conclusions: Corticosteroids reduce mortality and change outcome significantly when used early in the management of pulmonary leptospirosis.

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Pulmonary leptospirosis: an excellent response to bolus methylprednisolone.

BACKGROUND
Although cardiovascular disease (CVD) is recognized as a leading cause of death in patients with systemic lupus erythematosus (SLE) in western countries, there is hardly any data regarding Indian subjects with SLE.


AIMS
To determine the incidence of cardiac abnormalities and vascular lesions at autopsy and to assess their contribution to the mortality in patients with SLE.


SETTINGS AND DESIGN
Retrospective retrieval of reports of autopsies performed on 35 patients with SLE over a 11 year period and analysis of 27 cases with cardiac and/or vascular lesions.


MATERIALS AND METHODS
Gross and microscopic features in 27 autopsies were analyzed with special attention to the heart and the vasculature of all organs. Findings were correlated with clinical features and ante-mortem investigations. Their contribution towards mortality was assessed.


RESULTS
Valvar lesions were the commonest cardiac lesions noted with non-bacterial thrombotic endocarditis in nine (33.33%), valvar thickening in two (7.41%), Libman-Sacks endocarditis and infective endocarditis in one (3.70%) each. Myocarditis and myocardial scarring were seen in 10 (37.03%) and seven (25.92%) cases, respectively. Fibrinous pericarditis was noted in seven (25.92%). Thromboses/embolism, vasculitis and severe coronary atherosclerosis were seen in nine (33.33%), five (18.52%) and one (3.70%) subjects, respectively. Renal disease [13, 48.14%] and cardiovascular manifestations [8, 29.62%] were the leading causes of death in our patient population.


CONCLUSION
CVD contributes significantly to the mortality in patients with SLE in India. It is second only to renal disease in this regard.

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Original Article - Cardiovascular involvement in systemic lupus erythematosus: An autopsy study of 27 patients in India

Background: Although cardiovascular disease (CVD) is recognized as a leading cause of death in patients with systemic lupus erythematosus (SLE) in western countries, there is hardly any data regarding Indian subjects with SLE. Aims: To determine the incidence of cardiac abnormalities and vascular lesions at autopsy and to assess their contribution to the mortality in patients with SLE Settings and Design: Retrospective retrieval of reports of autopsies performed on 35 patients with SLE over a 11 year period and analysis of 27 cases with cardiac and/or vascular lesions.
 Materials and Methods: Gross and microscopic features in 27 autopsies were analyzed with special attention to the heart and the vasculature of all organs. Findings were correlated with clinical features and ante-mortem investigations. Their contribution towards mortality was assessed.
 Results: Valvar lesions were the commonest cardiac lesions noted with non-bacterial thrombotic endocarditis in nine (33.33%), valvar thickening in two (7.41%), Libman-Sacks endocarditis and infective endocarditis in one (3.70%) each. Myocarditis and myocardial scarring were seen in 10 (37.03%) and seven (25.92%) cases, respectively. Fibrinous pericarditis was noted in seven (25.92%). Thromboses/ embolism, vasculitis and severe coronary atherosclerosis were seen in nine (33.33%), five (18.52%) and one (3.70%) subjects, respectively. Renal disease [13, 48.14%] and cardiovascular manifestations [8, 29.62%] were the leading causes of death in our patient population. Conclusion: CVD contributes significantly to the mortality in patients with SLE in India. It is second only to renal disease in this regard

Cardiovascular involvement in systemic lupus erythematosus: an autopsy study of 27 patients in India.

Background: Leptospirosis is an important sporadic zoonotic disease caused by the spirochete Leptospira icterohaemorrhagiae . The disease becomes a major public health problem, particularly during the monsoon months. Materials and Methods : Analysis of autopsy findings of 62 cases of clinically suspected leptospirosis was carried out to identify the pathology and determine the cause of death. Results : Most patients were young males who presented with fever, breathlessness, haemoptysis, bleeding, oliguria and icterus. They died after a brief stay in hospital. A post-mortem diagnosis of leptospirosis was made on the basis of characteristic organ findings, aided by results of serology, Levaditi's staining and / or immunohistochemistry (IHC) on kidney sections. Massive intra-alveolar haemorrhage (48 cases), acute interstitial nephritis and / or acute tubular necrosis (45 cases) and myocarditis (24 cases) were the main autopsy findings. Haemorrhage in various organs like the heart, gastrointestinal tract, brain, pancreas and adrenals were also seen. Thirty of 54 kidney sections were positive for leptospiral antigens by IHC. There was extensive haemorrhages in the lungs in 48 (77%) cases and that was the cause of death in most of these cases. Conclusion : Bleeding into various tissues and organs is the main finding noted in this study. The post-mortem examination of patients dying of leptospirosis revealed that pulmonary haemorrhage was the cause of death in most individuals.

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Smita Divate

Papers

Original Article - Cardiovascular involvement in systemic lupus erythematosus: An autopsy study of 27 patients in India

Cardiovascular involvement in systemic lupus erythematosus: an autopsy study of 27 patients in India.

A study of sutopsy findings in 62 cases of leptospirosis in a metropolitan city in India.

Cardiovascular lesions in leptospirosis: an autopsy study.

Leptospirosis associated with diffuse alveolar haemorrhage.