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PubMed1998

Trends in cancer mortality in Argentina, 1966-91.

Trends in death certification rates for 12 major cancer sites and total cancer mortality in Argentina were analysed for the period 1966-91 on the basis of the World Health Organization database. In the late 1960s, total cancer mortality rates in Argentina (184/100,000 men, 117/100,000 women, world standard) were among the highest in the world. Over the 25-year period considered, however, cancer mortality in Argentina declined by 15% in both sexes, to reach 157/100,000 in men and 99/100,000 in women, for 1990-91. These rates were somewhat lower than those of North America and, particularly for women, relatively low on a worldwide scale. The favourable trends, observed mostly between the 1960s and the 1980s, reflect the steady decline in gastric cancer rates in both sexes, together with some decline in oesophageal, lung and other tobacco-related neoplasms, mostly in men, following some decline in tobacco consumption over the last two decades. The fall in oesophageal cancer may be related to decreased consumption of hot maté, too. Colorectal cancer rates were high in the 1960s, but declined by 17% in men and 35% in women. An approximately 50% decline was observed for skin cancer mortality, which was among the lowest in the world in the early 1990s, and some decline was observed also for leukaemias and uterine cancer, while breast and prostate neoplasms showed a general stability. The two major unfavourable features of cancer mortality in Argentina were the persistently high rates for oesophageal in men, and for uterine cancer mortality in women. These are likely a result of hot maté drinking for oesophageal cancer and inadequate screening for cervical cancer.

Age Distribution↗
PubMed2006

Genetic diversity in Aspergillus parasiticus population from the peanut agroecosystem in Argentina.

AIMS: The aims of this work were to identify potential sources of Aspergillus parasiticus inoculum and to evaluate the sclerotial and toxigenic profiles of this species from the peanut agroecosystem in Argentina. Likewise, the genetic diversity of A. parasiticus population was analysed using vegetative compatibility group (VCG) analysis. METHODS AND RESULTS: The A. parasiticus strains were isolated from soil, debris and peanut seeds in Córdoba Province, Argentina. A. parasiticus was recovered from the three sources analysed. Only 11 of 185 A. parasiticus isolates (5.9%) did not produce aflatoxins, while 57% produced sclerotia. Twenty-four VCG were identified from 63 isolates. The VCG diversity index for A. parasiticus, expressed as the number of groups divided by the total number of isolates, was 0.31. In general, there were significant differences among VCG in aflatoxin production. CONCLUSIONS: The presence of aflatoxigenic strains of A. parasiticus in the three substrates suggests that they may be an important source of aflatoxin in Argentina's peanut agroecosystem. The A. parasiticus population shows a low genetic diversity. SIGNIFICANCE AND IMPACT OF THE STUDY: The present study showed data on inoculum distribution, aflatoxin and sclerotia production and genetic diversity in an A. parasiticus population isolated from the peanut agroecosystem in Argentina.

Aflatoxins↗
PubMed1999

Surgery in Argentina.

This article will provide a brief background on Argentina and then summarize the country's medical and surgical history, undergraduate and postgraduate training programs, residency programs, surgical associations, research, and the Argentinean Journal of Surgery (Revista Argentina de Cirugía). Surgery in Argentina is at the same level as that of most developed countries although transplantation, traumatology, and laparoscopic surgery have been emphasized.

Argentina↗
PubMed1999

Outbreak of type A botulism and development of a botulism surveillance and antitoxin release system in Argentina.

CONTEXT: Botulism is an important public health problem in Argentina, but obtaining antitoxin rapidly has been difficult because global supplies are limited. In January 1998, a botulism outbreak occurred in Buenos Aires. OBJECTIVES: To determine the source of the outbreak, improve botulism surveillance, and establish an antitoxin supply and release system in Argentina. DESIGN, SETTING, AND PARTICIPANTS: Cohort study in January 1998 of 21 drivers of a specific bus route in urban Buenos Aires. MAIN OUTCOME MEASURE: Occurrence of botulism and implication of a particular food as the vehicle causing this outbreak. RESULTS: Nine (43%) of 21 bus drivers developed botulism, presenting with gastroenteritis, symptoms of acute cranial nerve dysfunction including ptosis, dysphagia, blurred vision, and motor weakness. One driver experienced respiratory failure. Type A toxin was detected from 3 of 9 patients' serum samples. All drivers received botulism antitoxin; there were no fatalities. Consumption of matambre (Argentine meat roll) was significantly associated with illness. Among 11 persons who ate matambre, 9 developed illness, compared with none of those who did not eat it (P<.001). The matambre had been cooked in water at 78 degrees C to 80 degrees C for 4 hours, sealed in heat-shrinked plastic wrap, and stored in refrigerators that did not cool adequately. Subsequently, a botulism surveillance and antitoxin release system was established. CONCLUSIONS: Insufficient cooking time and temperatures, storage in heat-shrinked plastic wrap, and inadequate refrigeration likely contributed to Clostridium botulinum spore survival, germination, and toxin production. A rapid-response botulism surveillance and antitoxin release system in Argentina should provide more timely distribution of antitoxin to patients and may serve as a model for other nations.

Adult↗
PubMed1997

beta-Thalassemia and hemoglobin types in Argentina: determination of most frequent mutations.

In order to know the spectrum of beta-thalassemia alleles and other mutations affecting the beta-globin gene, we analyzed the hemoglobin abnormalities in 24 patients from the Province of Cordoba in Argentina. Molecular screening of samples was performed by the polymerase chain reaction (PCR), using six sets of oligonucleotides to amplify fragments encompassing the whole beta-globin coding region and splice junctions, as well as the promoter and 3' untranslated regions. The altered fragments were determined by denaturing gradient gel electrophoresis (DGGE), and the corresponding mutations were identified by restriction enzyme analysis or by direct sequencing of PCR products. Using this approach, three different beta-thalassemia mutations were detected, codon 39 (C-->T), IVS-1-110 (G-->A), and IVS-1-1 (G-->A), and also the hemoglobin S trait. This is the first report of beta-thalassemia mutations described in Argentina. Our results show that these mutations are similar to those found in Spain and Italy, possibly due to the important Mediterranean migratory stream received in our country, and could be important for prenatal diagnosis of these diseases in Cordoba, Argentina.

Alleles↗
PubMed2005

Molecular evidence of HTLV-1 intrafamilial transmission in a non-endemic area in Argentina.

In the North of Argentina, an endemic area for HTLV-1, intrafamilial transmission of this virus has been observed. The HTLV-1 status in 13 family members of a seropositive blood donor from the central region of Argentina (non-endemic area) was investigated. According to serological and molecular assays, four members of this family (the blood donor, the husband, a son, and a daughter-in-law) proved to be HTLV-1 positive. LTR, tax, and env sequences from the provirus infecting the family members were identical. This strongly suggests the intrafamilial transmission of the virus. This study demonstrated intrafamilial transmission of HTLV-1 in a non-endemic area of Argentina.

Adult↗
PubMed2005

Intragroup antigenic diversity of human respiratory syncytial virus (group A) isolated in Argentina and Chile.

The intragroup antigenic diversity of the G glycoprotein of 226 human respiratory syncytial virus (HRSV) strains isolated in Buenos Aires (Argentina) and Santiago (Chile) between 1995 and 2002 was evaluated by ELISA with a panel of 14 anti-G monoclonal antibodies (MAbs). Out of 226 strains characterized, 172 (76%) belonged to group A and 54 (24%) to group B. Strains from both groups cocirculated throughout the study period in both countries, except in 1996, 2000, and 2002 when only group A strains were isolated. Within group A 23 different antigenic patterns were found as defined by the combination of reactivities with eight strain-specific anti-G MAbs. These antigenic patterns showed different behavior regarding their circulation. Some major patterns were observed in most years with variable proportions; other minor patterns were present in low proportions during 1 or 2 years and then were apparently replaced by new patterns. Some antigenic patterns occurred both in Argentina and Chile during the same epidemics. Since no strain-specific MAbs were available for group B, we could not evidence the antigenic variability within group B. These are the first data on antigenic characterization of HRSV strains isolated in Argentina and Chile. It is shown that the ELISA with MAbs directed against the G protein of RSV is a valuable tool. These results will also provide useful information for further studies to evaluate the antigenic variability of HRSV strains in relation with genetic characteristics.

Antigenic Variation↗
PubMed2006

Identification of the first strain of swine hepatitis E virus in South America and prevalence of anti-HEV antibodies in swine in Argentina.

In Argentina, a country considered non-endemic for hepatitis E virus (HEV) infection, serologic evidence of HEV infection has been observed in different human population groups. In other countries, a high degree of genetic relatedness has been observed between human and swine HEV genotype 3 sequences, suggesting zoonosis as one probable route of infection. This is the first identification of swine HEV in South America. HEV RNA was detected and sequenced in the ORF 1 and ORF 2 regions from swine fecal samples from a herd located in Pergamino, in the province of Buenos Aires. These strains all group into genotype 3 and exhibit a close relationship to two novel HEV variants previously identified in Argentina from sporadic acute cases of non-A to -C hepatitis in humans. In addition, using a modified commercial ELISA, the presence of anti-HEV antibodies was surveyed in five provinces across the country and all five showed a prevalence of HEV antibodies, ranging from 4% to 58%. The results suggest that swine could be an important reservoir for virus transmission in Argentina as has been suggested for other non-endemic areas. The Argentine human strains and swine strain described in this article seem to be closely related to a human Austrian strain, suggesting a potential European origin of HEV infection in these cases.

Animals↗
PubMed2006

Depressive episodes in Sardinian emigrants to Argentina: why are females at risk?

BACKGROUND/OBJECTIVE: To compare the frequency of ICD-10 depressive episodes in a community sample of Sardinian immigrants in Argentina and a community sample of Sardinian residents in Sardinia, Italy. METHOD: A search of telephone directories provided all subscribers with Sardinian surnames in the Argentinean area involved. A 75.8% of all subjects thus identified took part in the study (n = 210). The characteristics of randomisation methods used to identify the community sample in Sardinia (n = 1040) have already been published elsewhere. All subjects were interviewed using the Composite International Diagnostic Interview Simplified. RESULTS: A higher frequency of depressive disorders was observed among the Sardinian immigrants in Argentina (26.7 vs. 13.5%, P < 0.0001). Females in particular showed a higher risk with respect to the Sardinian sample resident in Sardinia. DISCUSSION: On comparison of the present findings with the lifetime rate of depressive episodes in Sardinian immigrants in Paris (France), reported in a previous research study, a lower prevalence was observed among the latter group than in Sardinian immigrants in Argentina but the young male immigrants in Paris were at risk. CONCLUSION: The results obtained seem to suggest that emigration to a country where economic conditions have since dramatically changed may predispose subjects to depressive disorders, particularly when compared to the percentage of affected subjects in their native population and among subjects who had emigrated to more economically stable countries. Further epidemiological studies are warranted in order to confirm the present results and to clarify the determinants of the major risk for females in such a condition.

Adolescent↗
PubMed2005

Mating-type distribution and fertility status in Magnaporthe grisea populations from Argentina.

Isolates of Magnaporthe grisea causing gray leaf spot on rice were collected in Argentina and analyzed for mating distribution and fertility. One hundred and twenty-five isolates of M. grisea were collected from rice plants between 2000 and 2003. Each isolate was tested for mating type through a polymerase chain reaction based assay. All M. grisea isolates from Argentina belonged to a single mating type, MAT1.1. The fertility status of isolates was determined using controlled crosses in vitro, pairing each isolate with GUY11 and KA9 (MAT1.2 standard hermaphroditic testers). Production of perithecia was scarce among isolates of the blast pathogen since a low percentage of them (7.2%) developed perithecia with only one of the fertile tester (KA9); all crosses failed with the other tester strain. Asci and ascospores were not observed. The presence of only one mating type and the absence of female fertile isolates indicate that sexual reproduction is rare or absent in M. grisea populations associated with rice in Argentina.

Argentina↗
PubMed1987

Liver cirrhosis mortality in Argentina: its relationship to alcohol intake.

In Argentina, rates of liver cirrhosis mortality increased significantly in both sexes (men 81.3% and women 79.8%) between 1962 and 1970. A tendency towards a decrease in mortality rates for liver cirrhosis was observed in all groups, except for men aged 35-44 years, between 1970 and 1978, but the age-adjusted mortality rate persisted in 1978 at a level significantly higher than in 1962. The high mortality rate caused by liver cirrhosis may be the consequence of high alcohol intake in Argentina. In 1975, the average per capita consumption of alcoholic beverages, per year was 80 l of wine, 16.75 l of beer and 7.5 l of distilled liquors. These results indicate that important educational and legislative measures should be undertaken to try to correct life styles in an attempt to decrease the incidence of alcohol-related diseases and accidents in Argentina.

Adult↗
PubMed1989

Injuries due to deliberate violence in areas of Argentina. I. The extent of violence. Copenhagen Study Group.

As part of a transcultural investigation of violent behaviour in Argentina and Denmark an analysis was made of the incidents involving deliberate violence as registered in the emergency wards of Hospital Fernandez and Hospital Pinero in Capital Federal Buenos Aires over a period of 13 and 17 months, respectively. In the two emergency wards a total of 281 victims of deliberate violence were observed corresponding to a rate of approximately 0.2/1000 per year in a mainly middle income area of the metropolis Buenos Aires, the catchment region of Hospital Fernandez, and 0.6/1000 per year in a mainly low income area of Buenos Aires, the catchment region of Hospital Pinero. Men aged 20-24 years and 40-49 years were found to be the most frequent victims of deliberate violence, 13% and 11%, respectively. Elderly women greater than or equal to 60 years of age were rarely found to be victims of deliberate violence (2%). Skilled and unskilled male workers were over-represented as victims of violence. Sixty-four percent of the victims were men and 29% women, 6% were boys and 0.7% girls less than or equal to 14 years of age. Twenty-one percent of the male victims and 5% of the female victims were alcohol intoxicated when arriving in the emergency ward. The incidents took place in restaurants or in the vicinity of restaurants for only 7% of the male victims, while 55% of male victims and 34% of female victims had been injured in the street, most often by non-acquainted men. Fifty-eight percent of the female victims had been subject to deliberate violence at home, in the majority of the cases beaten by their spouse. Twelve percent of the male victims and 8% of the female victims were estimated to be under the influence of drugs. The incidence of deliberate violence seems to be lower in Argentina than in Denmark. However, serious lesions appear to be considerably more frequent in male Argentinian victims compared to male Danish victims, maybe because the practice of seeking medical assistance is different in the two countries. The pattern of deliberate violence appears to be associated with socio-economic and cultural factors. Influence of alcohol does not appear to play a role that is comparable to the situation observed in Denmark. A considerably larger percentage of victims in Argentina than in Denmark had been injured in the street.

Adult↗
PubMed1989

Injuries due to deliberate violence in areas of Argentina. II. Lesions. Copenhagen Study Group.

As part of a transcultural investigation of violent behavior in Argentina and Denmark, the lesions from accidents involving deliberate violence registered in the emergency wards of Hospital Fernandez and Hospital Pinero in Capital Federal Buenos Aires over a period of 13 and 17 months, respectively, were studied. Among the 281 victims entering the two emergency wards blunt violence without use of instruments was most often reported to be the violation method. Frequently indicated violation instruments against the male victims were batons (18.7%), sharp instruments (17.7%), and firearms (17.7%), the corresponding figures for female victims being 9.6%, 8.4% and 4.8%. The use of firearms and batons was considerably more pronounced in Argentina than in Denmark, particularly against male victims. A total of 373 primary and secondary diagnoses were reported from the patients, the most frequent diagnoses being contusions and open wounds in the head/neck region. Forty-three percent of the diagnoses were related to the head/neck region, being the most frequently injured region and the trunk the second most frequently injured region (30%). The degree of predominance of lesions in the head/neck region was much less than in the Danish material. Injuries of internal organs of the trunk were considerably more frequent in Argentina than in Denmark. Eighty-five percent of the victims had moderate or less serious lesions when assessed on the basis of the scores in the Abbreviated Injury Scale (AIS), (score less than or equal to 2). The AIS scores of the lesions in female victims were on average only slightly higher than those recorded in the Danish study, while 16.1% of the male Argentinian victims had lesions scored greater than or equal to 3 compared to 1.8% in male Danish victims. The need for treatment and hospitalization was more pronounced than in the Danish study. It may be concluded that the frequency of serious cases of deliberate violence probably would decrease if more restrictive rules for the possessing of firearms were enacted and enforced.

Adolescent↗
PubMed2003

The attributable cost, length of hospital stay, and mortality of central line-associated bloodstream infection in intensive care departments in Argentina: A prospective, matched analysis.

BACKGROUND: Limited information is available on the financial impact of central venous catheter-associated bloodstream infection (BSI) in Argentina. To calculate the cost of BSIs in the intensive care department (ICU), a 5-year prospective nested case-control study was undertaken at 3 hospitals in Argentina. METHODS: We studied 6 adult ICUs from 3 hospitals. In all, 142 patients with BSI and 142 control patients without BSI were matched for hospital, type of ICU, year of admission, length of stay, sex, age, and average severity of illness score. Patients' length of stay in the ICU was obtained prospectively on daily rounds. The hospitals' finance departments provided the cost of each ICU day. The hospitals' pharmacies provided the cost of antibiotics prescribed for BSIs. RESULTS: The mean extra length of stay for patients with BSI compared with control patients was 11.9 days, the mean extra antibiotic defined daily dose was 22.6, the mean extra antibiotic cost was $1913, the mean extra cost was $4888.42, and the excess mortality was 24.6%. CONCLUSIONS: In this study, patients with central venous catheter-associated BSI experienced significant prolongation of hospitalization, increased use of health care costs, and a higher attributable mortality. These findings support the need to implement preventative interventions for patients hospitalized with central venous catheters in Argentina.

Aged↗
PubMed2005

The attributable cost and length of hospital stay because of nosocomial pneumonia in intensive care units in 3 hospitals in Argentina: a prospective, matched analysis.

BACKGROUND: No information is available on the financial impact of nosocomial pneumonia in Argentina. To calculate the cost of nosocomial pneumonia in intensive care units, a 5-year, matched cohort study was undertaken at 3 hospitals in Argentina. SETTING: Six adult intensive care units (ICU). METHODS: Three hundred seven patients with nosocomial pneumonia (exposed) and 307 patients without nosocomial pneumonia (unexposed) were matched for hospital, ICU type, year admitted to study, length of stay more than 7 days, sex, age, antibiotic use, and average severity of illness score (ASIS). The patient's length of stay (LOS) in the ICU was obtained prospectively in daily rounds, the cost of a day was provided by the hospital's finance department, and the cost of antibiotics prescribed for nosocomial pneumonia was provided by the hospital's pharmacy department. RESULTS: The mean extra LOS for 307 cases (compared with controls) was 8.95 days, the mean extra antibiotic defined daily doses (DDD) was 15, the mean extra antibiotic cost was $996, the mean extra total cost was $2255, and the extra mortality was 30.3%. CONCLUSIONS: Nosocomial pneumonia results in significant patient morbidity and consumes considerable resources. In the present study, patients with nosocomial pneumonia had significant prolongation of hospitalization, cost, and a high extra mortality. The present study illustrates the potential cost savings of introducing interventions to reduce nosocomial pneumonia. To our knowledge, this is the first study evaluating this issue in Argentina.

Aged↗
PubMed2006

Molecular epidemiology of vancomycin-resistant Enterococcus faecium in Argentina.

OBJECTIVE: To characterize the mechanism of glycopeptide resistance and to determine the genetic relatedness among strains by pulsed-field gel electrophoresis (PFGE) in vancomycin-resistant Enterococcus faecium from Argentina. MATERIALS AND METHODS: A total of 189 vancomycin-resistant single-patient isolates of Enterococcus faecium recovered between January 1997 and December 2000 from 30 hospitals in Argentina were studied. Minimum inhibitory concentrations were determined by the agar dilution method and van genes were detected by PCR. PFGE was used for molecular typing. RESULTS: All isolates except three (vanB) were of genotype vanA. For 189 vancomycin-resistant Enterococcus faecium, SmaI-PFGE indicated 35 clonal types. Most of the isolates (56%) belonged to the same clonal type 1, which was present in 19 hospitals and dominant in 17. CONCLUSIONS: The emergence of vancomycin-resistant Enterococcus faecium in Argentina seems to be related to the intra- and inter-hospital dissemination of an epidemic clone carrying the vanA element.

Argentina↗
PubMed2006

Spatial and temporal transmission risk of Dirofilaria immitis in Argentina.

The aim of this work was to assess spatial and seasonal Dirofilaria immitis transmission risk throughout Argentina with models based on the temperature threshold below which filarial development will not proceed in the mosquito (i.e. 14 degrees C), the occurrence and the number of potential vector mosquito species, and the Heartworm Development Units derived from the degree-days concept. The four models showed a similar increasing southwest-northeast tendency and correlated significantly with canine prevalences used as external validation data. About one-third of Argentina would be suitable for heartworm transmission and the highest risk areas include the north-eastern provinces. According to our models, heartworm transmission is markedly seasonal with peaks in January and February; no region would support transmission throughout the year. To improve the present models, it is necessary to know which mosquito species are competent rather than potential vectors in the country. We believe the present study provides the first risk assessment maps for D. immitis transmission in the Southern Hemisphere and provides a useful guide for heartworm prevention during the transmission periods in different regions of Argentina.

Animals↗
PubMed2006

Medicinal plants from the "Sierra de Comechingones", Argentina.

Argentina is a country with both rich floral biodiversity and cultural diversity. Traditional herbal medicines are important in the health care of most people, and rely heavily on the use of indigenous plants. An ethnobotanical survey of the "Sierra de Comechingones" made over a 26-year period (1979-2005), indicated that 65 families and 149 different genuses were used in traditional medicines. The use of these medicines was observed to be widespread and prevalent over orthodox medicine. Medicinal native plants from this mountain range make up 31% of the total Argentina medicinal native flora. In addition, there are 15 endemic species that grow only in the region. The botanical name, popular uses, parts utilized, as well as the distribution of these medicinal plants from the "Sierra de Comechingones", Argentina, were summarized. Previous reports on phytochemical and biological activities in relation to cancer, antimicrobials and pesticides were also included.

Animals↗