Lack of evidence for the presence of leprosy bacilli in red squirrels from North-West Europe.

Leprosy is a human infectious disease caused by Mycobacterium leprae or Mycobacterium lepromatosis that can also occur in animals and even manifest as zoonosis. Recently, both mycobacteria were detected in red squirrels (Sciurus vulgaris) from the British Isles. To further explore the presence of leprosy bacilli in North-West Europe, we screened Belgian and Dutch squirrels. Tissue samples from 115 animals tested by qPCR were negative for both pathogens. No molecular or pathological evidence was found of the presence of these zoonotic pathogens in North-West Europe.

Whole blood RNA signatures in leprosy patients identify reversal reactions before clinical onset: a prospective, multicenter study.

Early diagnosis of leprosy is challenging, particularly its inflammatory reactions, the major cause of irreversible neuropathy in leprosy. Current diagnostics cannot identify which patients are at risk of developing reactions. This study assessed blood RNA expression levels as potential biomarkers for leprosy. Prospective cohorts of newly diagnosed leprosy patients, including reactions, and healthy controls were recruited in Bangladesh, Brazil, Ethiopia and Nepal. RNA expression in 1,090 whole blood samples was determined for 103 target genes for innate and adaptive immune profiling by dual color Reverse-Transcription Multiplex Ligation-dependent Probe Amplification (dcRT-MLPA) followed by cluster analysis. We identified transcriptomic biomarkers associated with leprosy disease, different leprosy phenotypes as well as high exposure to Mycobacterium leprae which respectively allow improved diagnosis and classification of leprosy patients and detection of infection. Importantly, a transcriptomic signature of risk for reversal reactions consisting of five genes (CCL2, CD8A, IL2, IL15 and MARCO) was identified based on cross-sectional comparison of RNA expression. In addition, intra-individual longitudinal analyses of leprosy patients before, during and after treatment of reversal reactions, indicated that several IFN-induced genes increased significantly at onset of reaction whereas IL15 decreased. This multi-site study, situated in four leprosy endemic areas, demonstrates the potential of host transcriptomic biomarkers as correlates of risk for leprosy. Importantly, a prospective five-gene signature for reversal reactions could predict reversal reactions at least 2 weeks before onset. Thus, transcriptomic biomarkers provide promise for early detection of these acute inflammatory episodes and thereby help prevent permanent neuropathy and disability in leprosy patients.

Social implications of leprosy in the Netherlands--stigma among ex-leprosy patients in a non-endemic setting.

BACKGROUND: In the Netherlands, leprosy is a rare and non-endemic disease, still occurring as an 'import disease'. Moreover a considerable group of people affected by leprosy, originating mainly from the former Dutch colonies, suffer from neuropathic complications. This study investigates the social implications of leprosy for those affected in the Netherlands. METHODS: Thirty-one people affected were interviewed as well as six medical leprosy experts. The social implications were measured by means of semi-structured interviews and the Participation Scale. RESULTS: Self-stigma, shame and secrecy were often reported. Discrimination and stigmatisation of ex-leprosy patients by people around them seems a less frequent problem. Yet, people affected by leprosy seem to be a forgotten group with a high social burden due to low self-esteem and reduced social participation. Medical experts do not seem to be aware of the severity of leprosy-related forms of stigma in their patients. Ex-leprosy patients lack sound disease-related information and support groups. Due to the low incidence and as a consequence, the lack of awareness among doctors, leprosy patients in the Netherlands are faced with substantial diagnostic delay (mean delay 1-8 years). CONCLUSIONS: Leprosy and its stigma affect the social lives of patients, even in a non-endemic area such as the Netherlands. Almost all respondents were affected by self-stigma. There is a need for 1) more information and support groups for patients, and 2) increased awareness among professionals.

['Rheumatoid arthritis' in a Surinamese man: leprosy]. / 'Reumatoïde artritis' bij een Surinaamse man: lepra.

Rheumatoid arthritis was diagnosed in a 65-year-old man from Suriname, on the basis of clinical and radiological findings. However, he was eventually diagnosed with leprosy. This emerged when the patient developed skin lesions and complained of increasing sensibility disorders during treatment for the alleged rheumatoid arthritis. He was treated with a combination therapy consisting of rifampicin, clofazimine, dapsone, and prednisone. The skin lesions and joint symptoms were resolved as a result of this, but the sensibility disorders persisted. As physicians are not sufficiently familiar with leprosy and the condition has many manifestations that can mimic more frequently occurring diseases, leprosy is often diagnosed at a later stage. This may result in irreversible damage, especially to the peripheral nerves, which may lead to disability. Therefore, for patients who originate from areas where leprosy is endemic and who suffer from joint complaints in combination with skin or sensibility disorders, the diagnosis of leprosy should be considered.

[Leprosy in The Netherlands in the period 1970-1991]. / Lepra in Nederland in de periode 1970-1991.

OBJECTIVE: To inventory the changes in leprosy epidemiology in the Netherlands. DESIGN: Retrospective. SETTING: Academic Medical Centre (Amsterdam) and University Hospital Dijkzigt (Rotterdam), the Netherlands. METHOD: The medical records of all new leprosy patients in the period 1970-1991 were analysed. RESULTS: Between 1970 and 1991, 622 new leprosy patients were registered; 371 men (59.6%) and 251 women (40.4%). Most patients came from Surinam (73.3%) and Indonesia (7.2%). The mean time lapse between onset and treatment in the Netherlands was 10.1 years. Switching from monotherapy to combination therapy (1979) had no effect on the incidence of reversal reactions (cellular hypersensitivity in immunologically unstable patients), but did affect the incidence of erythema nodosum leprosum during the treatment. CONCLUSION: Leprosy in the Netherlands is an important disease, mainly from Surinam. The main advantage of combination therapy is the shortened duration of treatment. The treatment of choice is the one recommended by the WHO, the combination therapy with rifampicin administration once a month, because of the few adverse effects.