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Biomedical subjects

E Caumes

Publications and source records attributed to E Caumes.

At least 19 recordsLinked to original sources

Remission from Kaposi's sarcoma on HAART is associated with suppression of HIV replication and is independent of protease inhibitor therapy.

Highly active antiretroviral therapy (HAART) reduces the incidence and improves the prognosis of Kaposi's sarcoma (KS). This study was designed to identify factors associated with KS clinical responses in HIV-infected patients during HAART. We reviewed the files of 138 HIV-1-infected patients with KS. Epidemiologic and HIV-related clinical and biological parameters were recorded at KS diagnosis (baseline) and every 6 months thereafter. In a subset of 73 antiretroviral-naive patients, we compared the clinical outcome of KS according to the use or nonuse of protease inhibitors (PI). After 6 months of follow-up, KS remission was more frequent in patients who were naive of HAART and who were at ACTG stage S0 at baseline (P = 0.03 and 0.02). Undetectable HIV viral load was strongly associated with KS remission (P< or = 0.004 at all time points), while CD4 cell count was not. Among the 73 antiretroviral-naive patients at baseline, and who were studied for 24 months, KS outcome did not differ between patients who were prescribed PI-containing and PI-sparing regimens. Intercurrent multicentric Castleman's disease was associated with poor outcome after 60 months of follow-up (P< or = 0.0001). Fourteen deaths occurred after a median follow-up of 37.5 months, eight of which were KS related. Suppression of HIV replication appears to be crucial to control KS. Non-PI-based regimens were equivalent to PI-based regimens as regards the clinical and virological outcome of antiretroviral-naive HIV-infected patients with KS.

Adult↗

[Influenza and travelling].

There is a risk for the traveler to acquire an exotic disease when traveling and to introduce it in non-endemic areas after returning. Influenza is a good example of such a disease. The incidence of flu in travelers is unknown. However, numerous outbreaks of flu have been reported in groups of travelers: package tours, pilgrims, elderly people, and travel by plane or cruise ships. Nowadays vaccination against flu is not recommended in travelers unless they belong to groups at risk for flu. Nonetheless vaccination against flu is difficult to apply to travelers due to problems in vaccine availability and inadequacy between vaccine strains and strains responsible for ongoing outbreaks in the opposite hemisphere. This vaccination seems important to travelers because flu may impair their vacation. In addition, it is also interesting for the community if it limits the spread of flu worldwide.

Adolescent↗

[Clinical tolerance of cutaneous antiseptics in 3,403 patients in France].

INTRODUCTION: We prospectively studied the prevalence and the clinical forms of adverse cutaneous reactions associated with the main antiseptics used in France, the incidence of which is not well known. PATIENTS AND METHODS: Patients were included by 773 French dermatologists from May to June 2003. The 8 first consecutive adult patients for whom ambulatory treatment with a cutaneous antiseptic was prescribed were included. Patients were evaluated at inclusion and after treatment, either in person or by telephone. All reported adverse cutaneous reactions were validated by two independent experts. RESULTS: 3,403 patients (61% women, 39% men; mean age: 47) were included. Antiseptics were indicated for ambulatory surgery (45%), technical procedures (33%), and in combination with other treatments for various dermatoses, wounds and burns (12%). The 6 most widely used treatments (96% of prescriptions) were hexamidine (37%), chlorhexidine-benzalkonium (28%), chlorhexidine-alcohol (16.5%), aqueous chlorhexidine (7%), polyvidone iodine (6%) and hexamidine-chlorhexidine (1.8%). The antiseptic was prescribed for application by dabbing (57%) or spraying (40%), twice daily for a mean 10 days (3-30 days). A transient burning sensation was noticed by 4 to 7% of the patients, without any significant difference between antiseptics. Twelve adverse events were reported: contact dermatitis in 9 patients, persistent burning sensation in 2 and yellow discoloration of the skin in one. This latter case, caused by the colour of the antiseptic, cannot be considered as an adverse event. Furthermore one patient with contact dermatitis should have not been included because he had a history of cutaneous reaction related to the use of the same antiseptic. Therefore only 10 cutaneous reactions were eventually taken into account (overall prevalence=2.9 per thousand, ranging from 0% to 0.5% according to the antiseptic). There was no significant difference in terms either of the antiseptic used or the site of the treated lesion. A history of contact dermatitis was associated with a significant risk of adverse reaction (OR=7.2; CI 95: 2.0-26.4; p=0.007). The median time from onset of treatment to appearance of contact dermatitis was 4 days (0-90 days). The condition resolved following discontinuation of treatment; spontaneously in 5 patients and with dermocorticoid therapy in 5 others. DISCUSSION: The results of this study give a precise idea of how the antiseptics are used by French dermatologists in clinical practice in outpatients and how often their use is complicated by the occurrence of adverse cutaneous reactions. The low rate of such reactions (2.9 per thousand) in our study is thus in contrast with the impression given by the large number of publications related to this complication. It also tempers the high rates of sensitisation to various antiseptics found in selected at-risk patients. The most common adverse event observed was contact dermatitis and a history of this condition conferred a significant risk of cutaneous reaction. CONCLUSION: Although cutaneous antiseptics are well tolerated with a low prevalence of adverse reactions, generally mild, they should nevertheless be prescribed with caution in patients with a history of contact dermatitis.

Anti-Infective Agents, Local↗

[Invasive schistosomiases].

Schistosomiasis is a tropical helminthic infection, observed in travelers as well as local populations. It is most often due to Schistosoma mansoni or Schistosoma haematobium and can be diagnosed at the invasive phase. Migration of the schistosomulae (larvae) in the body leads to acute parasitic toxemia, which includes a hypersensitivity reaction and circulating immune complexes. The invasive stage occurs generally 2 to 6 weeks after the exposure and combines fever, asthenia, faintness and headaches. Other signs include diarrhea, dry cough, dyspnea, urticarial rash, arthralgia, myalgia, and enlargement of liver and spleen. Although rare, neurological and cardiac complications may be fatal. This diagnosis should be considered in travelers returning from the tropics with compatible clinical signs and delayed hypereosinophilia, if they report exposure in an endemic area. It is later confirmed by seroconversion for schistosomiasis and then by observation of schistosome eggs in stool or urine (according to species). The standard treatment of acute schistosomiasis with praziquantel is ineffective and can aggravate clinical outcome during this phase. Corticosteroid treatment is recommended for serious forms with neurological or cardiac manifestations.

Acute Disease↗

[Scurvy, a re-emerging disease].

BACKGROUND: Scurvy is the clinical manifestation of vitamin C deficiency. It is historically linked to the era of great maritime expeditions. But it is remerging in Western countries as in France. SITUATION: Nowadays, scurvy mainly affects homeless populations of large occidental cities and the isolated and malnourished inhabitants of developing countries. The clinical presentations of scurvy are numerous and often misleading and its evolution without treatment is always lethal. After years of wanderings and research, the physiopathological mechanisms of scurvy were finally understood, due to the will of outstanding personalities who took the risk to brave the established superstitions in order to apply a strict medical approach. PERSPECTIVES: Scurvy must still be prevented in at risk-populations. Indeed a pocket meal enriched with vitamin C is distributed to homeless people in Paris.

Ascorbic Acid↗

[Gnathostomiasis: an emerging parasitic disease?].

INTRODUCTION: Human gnathostomiasis is a parasitic disease caused by the ingestion of foods contaminated with the larvae of various species of Gnathostoma. This zoonosis is currently endemic in Asia and Central America. CASE REPORT: A 46-year-old French woman resident in Vietnam presented with intermittent pruritic swelling of the hand, present for one year, coupled with eosinophilia. The patient's history and serological testing confirmed the suspected diagnosis of gnathostomiasis. A favorable outcome was attained on treatment with albendazole. DISCUSSION: This case, together with several others recently reported in France and Europe, underlines the need to inform travelers and migrants to endemic regions of the risks associated with eating raw or marinated fish.

Albendazole↗

Seronegative secondary syphilis in an HIV-infected patient.

Recently, increased rates of syphilis among gay men have been observed in American and European cities. It is important to establish the diagnosis because syphilis facilitates HIV transmission during the primary and secondary stages when sores are open on the skin. However the diagnosis can present a dilemma as negative reactions to serological tests may be observed in AIDS patients. We report here such a case in which the diagnosis was established on dark field examination.

Adult↗

[Gnathostomiasis].

Gnathostomiasis is an helminthic zoonotic disease endemic in Asia, mainly in Southeastern Asia, and Latin America, that has been increasingly reported in travelers returning from these areas. It is due to the consumption of raw or insufficiently cooked meat (chiken, snakes), frogs or fish, contaminated with larvae of the gender Gnathostoma. Gnathostomiasis includes a great variety of clinical manifestations caused by cutaneous and/or visceral larva migrans syndrome. We present here parasitological, epidemiological, clinical and therapeutic aspect of the disease.

Animals↗

[Cercarial dermatitis].

A POTENTIAL PUBLIC HEALTH PROBLEM: Cercarial dermatitis is caused by the infestation of the skin by cercariae of nonhuman schistosomes whose commonest hosts are aquatic birds. Human contamination can occur during swimming in fresh water infested with cercariae and notably ducks. Its geographic distribution is worldwide and is increasingly described in France during the summer months. FROM A CLINICAL POINT OF VIEW: A diffuse eruption composed of prurigenous maculopapules appears within the 24 hours following exposure. Regression is spontaneous within one day to three weeks. PREVENTION IS ADVISABLE: Treatment is symptomatic in the majority of patients. The optimal prevention, for bathers, is to swim in sufficiently deep water.

Animals↗

Assessment of cetirizine, an antihistamine, to prevent cutaneous reactions to nevirapine therapy: results of the viramune-zyrtec double-blind, placebo-controlled trial.

We conducted a 12-week, multicenter, randomized, double-blind, placebo-controlled trial of cetirizine to assess the ability of antihistamines to prevent nevirapine-associated rash in patients infected with human immunodeficiency virus type 1. Patients initiating treatment with nevirapine were randomized to receive either cetirizine, 10 mg q.d. (104 patients), or placebo (96 patients) during the first 6 weeks of therapy. Rash occurred in 22 (11%) of 200 patients; 10 (9.6%) were in the cetirizine group and 12 (12.5%) were in the placebo group (odds ratio [OR], 0.75; 95% confidence interval [CI], 0.31-1.81; P=.5). Five of 22 rashes were cases of hypersensitivity syndrome. The rate of nevirapine discontinuation due to rash was similar in the 2 groups (7.7% and 6.25% in the cetirizine and placebo groups, respectively; P=.4). Multivariate analysis showed no treatment-group effect but indicated that age >40 years (OR, 3.83; 95% CI, 1.4-10.46; P=.008) was associated with an increased risk of rash. Cetirizine has no preventive effect on nevirapine-associated rash.

Adult↗

[A group fever: safari's fever].

INTRODUCTION: Acute schistosomiasis, called safari's fever in Africa and Katayama fever in Japan, is an immunoallergic reaction due to transcutaneous penetration of infective cercaria. We report the collective case of seven young adults spending holidays in Mali. EXEGESIS: An eighteen years-old girl presents fever, headache, diarrhoea and abdominal pains at return from Dogon country (south of Mali). After turned down malaria and with the notion of bathing in fresh water followed by pruritus, we think to safari's fever. So we alarm all other members of the group. All can be treated to avoid chronic schistosomiasis. CONCLUSION: These observations recall that acute schistosomiasis is a real danger for tourists when bathing in fresh water in endemic areas of Africa. Education of travellers is necessary. Occurrence of safari's fever should alert physicians to prevent chronic schistosomiasis.

Adolescent↗

Dermatoses associated with travel to Burkina Faso and diagnosed by means of teledermatology.

BACKGROUND: The pattern of dermatoses occurring in travellers to tropical areas is poorly documented. OBJECTIVES: To diagnose skin diseases in travellers to Burkina Faso by means of teledermatology; to assess the educational value of teledermatology for the local general practitioner (GP). METHODS: Patients (Westerners and Burkinabese nationals) were included in the study if they presented with a cutaneous disease to the GP based in Ouagadougou, Burkina Faso. Images of the skin lesions were acquired with a point-and-shoot digital camera and sent via the Internet, together with the clinical history. Diagnostic concordance between dermatologists in France and the GP in Ouagadougou was analysed as a simple proportion of agreement and 95% confidence interval. RESULTS: One hundred and twenty-four patients (M/F ratio 1.17; 80.6% Westerners) were included in the study. One hundred and thirty dermatoses were identified: 73 (56%) were of infectious origin, and 19 (15%) were related to eczematous dermatitis. The skin infections were mainly due to bacteria (18%), fungi (14%) or arthropods (13%). Parasitic dermatoses were observed only in Burkinabese nationals. Among Westerners, fungal dermatoses were observed only in long-term residents. The diagnostic agreement between the local GP and the remote dermatologists was 49% overall (95% confidence interval 41-58). Agreement between the GP and the dermatologists on the dermatological category improved significantly over time (P<0.05). CONCLUSIONS: Telemedecine can improve the management of cutaneous diseases among Western travellers. Most dermatoses observed in Western travellers to Burkina Faso are of infectious origin. Teledermatology has educational value for local GPs.

Adolescent↗

Acute hepatitis C in HIV-infected men who have sex with men.

BACKGROUND: Hepatitis C virus (HCV) is usually transmitted via the parenteral route, but there are widely discrepant findings on its possible sexual transmission. Thus there are no recommendations concerning protected sex for couples in which only one partner is HCV-infected. Whether HIV or other sexually transmitted diseases could favour HCV transmission remains unclear, but recent data suggesting an increasing incidence of acute HCV in HIV-infected men underline the major public health implications of this issue. CASE REPORTS: Between June 2002 and July 2003, five HIV-infected homosexually active men presented with primary (n=4) and secondary (n=1) syphilis and concomitant abnormal liver function tests revealing acute asymptomatic HCV seroconversion. Other causes of acute viral hepatitis were inquired into and excluded. Highly at-risk sexual behaviour, including unprotected anal intercourse and unsafe oral sex, with concomitant syphilis, was found to be the only identifiable important risk factor for transmission of HCV. CONCLUSIONS: Sexual transmission may be fuelling a significant increase in HCV seroconversions among HIV-infected men who have highly risky sexual behaviours. Given the recent data suggesting the spread of sexually transmitted infections among HIV-infected gay men, specific recommendations concerning safe sex are urgently needed.

Acute Disease↗

Multiple microembolic borderzone brain infarctions and endomyocardial fibrosis in idiopathic hypereosinophilic syndrome and in Schistosoma mansoni infestation.

We report two cases of multiple distal borderzone ischaemic strokes associated with hypereosinophilia due to idiopathic hypereosinophilic syndrome in one patient and to acute Schistosoma mansoni infestation in the other. Endomyocardial fibrosis (EMF) was documented pathologically, in one case at autopsy and in the other after cardiac surgery; and by cardiac CT, with initially negative echocardiography, in one patient. These observations suggest that so called borderzone infarcts may be due to microembolisms and that, in the context of hypereosinophilia, EMF diagnosis warrants complete cardiac investigation including cardiac CT and repeat echocardiography.

Adult↗