Dermatolymphangioadenitis Attacks Research Articles

Morbidity management and surveillance of lymphatic filariasis disease and acute dermatolymphangioadenitis attacks using a mobile phone-based tool by community health volunteers in Ghana.

Morbidity burden of lymphatic filariasis (LF) relies on the information from the Mass Drug Administration (MDA) programme where Community Health Volunteers (CHVs) passively report cases identified. Consequently, the exact prevalence of morbidity cases is not always accurate. The use of mobile phone technology to report morbidity cases was piloted in Ghana using a text-based short messaging service (SMS) tool by CHVs. Though successful, illiterate CHVs could not effectively use the SMS tool. The aim of this study was to evaluate the use of a mobile phone-based Interactive Voice Response System (mIVRS) by CHVs in reporting LF morbidity cases and acute dermatolymphangioadenitis (ADLA) attacks in Ghana. The mIVRS was designed as a surveillance tool to capture LF data in Kassena Nankana Districts of Ghana. One hundred CHVs were trained to identify and report lymphedema and hydrocele cases as well as ADLA attacks by calling a hotline linked to the mIVRS. The system asked a series of questions about the disease condition. The ability of the CHV to report accurately was assessed and the data from the mIVRS were compared with the paper records from the CHVs and existing MDA programme records from the same communities and period. Higher numbers of lymphedema and hydrocele cases were recorded by the CHVs using the mIVRS (n = 590 and n = 103) compared to the paper-based reporting (n = 417 and n = 76) and the MDA records (n = 154 and n = 84). Female CHVs, CHVs above 40 years, and CHVs with higher educational levels were better at paper-based reporting (P = 0.007, P = 0.001, P = 0.049 respectively). The system, when fully developed and linked to national databases, may help to overcome underreporting of morbidity cases and ADLA attacks in endemic communities. The system has the potential to be further expanded to other diseases.

Clinical case estimates of lymphatic filariasis in an endemic district of Bangladesh after a decade of mass drug administration.

Bangladesh has a high burden of lymphatic filariasis (LF) disease. This survey estimated the current number of clinical cases in a historically endemic district after a decade of mass drug administration (MDA). A cluster survey was conducted in 30 villages of Nilphamari District. Ten households per village were randomly selected, and individuals with LF clinical conditions identified. Hydrocoele and lymphoedema (leg, arm, breast) cases were quantified and mapped, and differences by sex, age, severity of disease and episodes of acute dermatolymphangioadenitis attacks (ADLA) examined. From 1242 surveyed >10 years old 55 individuals (4.4%) with LF clinical conditions were identified. Males were mostly affected by hydrocoeles, and females by leg lymphoedema. Higher prevalence and more advanced stages of disease were found in older age groups. Overall low prevalence of severe clinical disease was found, which has positive implications for the elimination goal. Future planning of MMDP strategies will need to address the varying clinical conditions, severity of disease and impact of ADLAs affecting different sub-groups of the population. It will also be important to monitor for new cases, and examine the shift in age distribution of cases over time.

A Single-Site Technique of Multiple Lymphatic-Venous Anastomoses for the Treatment of Peripheral Lymphedema: Long-Term Clinical Outcome.

The authors' vast surgical experience in the treatment of primary and secondary peripheral lymphedemas using microsurgical procedures at the Centre of Lymphatic Surgery and Microsurgery of the University of Genoa, Italy, is reported. The objective is to describe the techniques and the long-lasting clinical outcomes based on 40 years' experience and research, with particular reference to advanced derivative and reconstructive lymphatic microsurgery at a single site. More than 2,600 patients affected by upper and/or lower limb lymphedema, between 1973 and 2013, underwent lymphatic microsurgery. Derivative multiple lymphatic-venous anastomoses (MLVA) or lymphatic pathway reconstruction using interpositioned vein-grafted shunts multiple lymphatic venous lymphatic anastomoses (MLVLA) were performed at a single site, either the axillary or inguinal-crural region. Patients were followed up for a minimum of 5 years to over 20 years. Clinical outcomes included excess limb volume (ELV), frequency of dermatolymphangioadenitis (DLA) attacks, and use of conservative therapies. Compared with preoperative conditions, patients obtained significant reductions in ELV of over 84%, with an average follow-up of 10 years or more. Over 86% of patients with earlier stages of disease (stage IB or IIA) progressively stopped using conservative therapies and 42% of patients with later stages (stages IIB and III) decreased the frequency of physical therapies. DLA attacks considerably reduced by over 91%. MLVA or MLVLA techniques when performed at a single site produce excellent outcomes in the treatment of both primary and secondary lymphedemas, giving the possibility of a complete restoration of lymphatic flow in early stages of disease when tissue changes are minimal.

Lymphatic Microsurgery to Treat Lymphedema

This study aimed to report new clinical approaches to the treatment of lymphatic disorders by microsurgical techniques based on histological and immunohistochemical findings. The authors' wide clinical experience in the treatment of patients with peripheral lymphedema by microsurgical techniques is reported. Microsurgical methods included derivative lymphatic-venous anastomoses and lymphatic reconstruction by interpositioned vein grafted shunts. In all patients, lymphatic and lymph nodal tissues were sent for histological assessment, together with specimen of the interstitial matrix. Diagnostic investigations consisted in venous duplex scan and lymphoscintigraphy. Results were assessed clinically by volumetry performed preoperatively and postoperatively at 3 to 6 months and at 1, 3, and 5 years. The outcome obtained in treating lymphedemas at different stages was analyzed for volume reduction, stability of results with time, reduction of dermatolymphangioadenitis attacks, necessity of wearing elastic supports, and use of conservative measures postoperatively. Microsurgical lymphatic derivative and reconstructive techniques allow bringing about positive results in the treatment of peripheral lymphedema, above all in early stages when tissular changes are slight and allow almost a complete restore of lymphatic drainage.

Doxycycline Improves Filarial Lymphedema Independent of Active Filarial Infection: A Randomized Controlled Trial

The aim of this study was to determine whether improvement of filarial lymphedema (LE) by doxycycline is restricted to patients with ongoing infection (positive for circulating filarial antigen [CFA]), or whether the majority of CFA-negative patients with LE would also show a reduction in LE severity. One hundred sixty-two Ghanaian participants with LE stage 1-5 (Dreyer) were randomized blockwise into 2 groups (CFA positive or negative) and allocated to 3 treatment arms of 6 weeks: (1) amoxicillin (1000 mg/d), (2) doxycycline (200 mg/d), or (3) placebo matching doxycycline. All groups received standard hygiene morbidity management. The primary outcome was reduction of LE stages. Secondary outcomes included frequency of acute attacks and ultrasonographic assessment of skin thickness at the ankles. Parameters were assessed before treatment and after 3, 12, and 24 months. Doxycycline-treated patients with LE stage 2-3 showed significant reductions in LE severity after 12 and 24 months, regardless of CFA status. Improvement was observed in 43.9% of doxycycline-treated patients, compared with only 3.2% and 5.6% in the amoxicillin and placebo arms, respectively. Skin thickness was correlated with LE stage improvement. Both doxycycline and amoxicillin were able to reduce acute dermatolymphangioadenitis attacks. Doxycycline treatment improves mild to moderate LE independent of ongoing infection. This finding expands the benefits of doxycycline to the entire population of patients suffering from LE. Patients with LE stage 1-3 should benefit from a 6-week course of doxycycline every other year or yearly, which should be considered as an improved tool to manage morbidity in filarial LE. Clinical Trials Registration. ISRCTN 90861344.

Bacteriologic studies of skin, tissue fluid, lymph, and lymph nodes in patients with filarial lymphedema.

Filarial lymphedema is complicated by frequent episodes of dermatolymphangioadenitis (DLA). It is not certain whether DLA is of filarial or bacterial etiology. The frequency of episodic DLA does not depend on the presence or absence of microfilariae. Antibiotic therapy is effective in prevention and treatment of DLA. These observations point to the bacterial rather than filarial etiology of DLA. Skin and lymph node biopsies, tissue fluid, lymph, and blood from patients with chronic filarial lymphedema, and during acute episodes of DLA, were cultured for detection of bacteria. A high prevalence of bacterial isolates from the tissue fluid (64%), lymph (75%), and inguinal lymph nodes (66%) of limbs with filarial lymphedema was found. Bacillus cereus, Staphylococcus epidermidis, S. hominis, S. capitis, S. xylosus, and Micrococcus spp. were the most common isolates. Bacteria were also isolated from the blood of patients with recent episodes of DLA, with strains of the same phenotype and antibiotic sensitivity in all specimens from patients with DLA. Bacterial strains of the same phenotype and antibiotic sensitivity were documented on the toe web surface and in tissue fluid (25%), lymph (26%), or lymph nodes (41%). Increasing prevalence of bacterial isolates in tissue fluid, lymph, and lymph nodes was observed in advanced stages of lymphedema. Bacilli and cocci were sensitive to gentamicin, tetracyline, rifampicin, vancomycin, kanamycin and cotrimoxazole, and least sensitive to penicillin. Blood cultures of patients in the periods between DLA attacks were negative. In healthy controls without edema and episodes of DLA, tissue fluid did not contain bacteria. In lymph, only single colonies of Micrococcus and Acinetobacter were cultured in 12% of the cases. Impaired lymph drainage and lack of elimination of penetrating bacteria may be responsible for progression of lymphedema and recurrent attacks of DLA.