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Antiretroviral treatment of human immunodeficiency virus infection: Swedish recommendations.

The Swedish guidelines (SwG) for treatment of human immunodeficiency virus (HIV) infection have several important roles. A major task involves the promotion of a uniformly high standard of care in all HIV treatment clinics in Sweden and the identification of strengths, weaknesses and relevance of recent research findings. CD4+ T-cell counts < 200 cells/microl are clear indications for the initiation of treatment, whereas high viral loads serve as an indication for increased vigilance rather than a criterion for therapy. It is recommended that the first regimen consists of 2 nucleoside reverse transcriptase inhibitors in combination with 1 protease inhibitor or 1 non-nucleoside reverse transcriptase inhibitor. The definition of treatment failure is rigorous. Treatment change should be considered if the viral load has not fallen by at least 1.5 log in 4 weeks or is undetectable within 3-4 months. Resistance testing is endorsed at primary infection, in the event of treatment failure and in pregnant women. Interaction with experts in HIV resistance testing is emphasized. Therapeutic drug monitoring is advocated. Patients with treatment failure should be handled individually and the decision on therapeutic strategy should be based on treatment history, resistance testing and other clinical facts. The SwG do not give recommendations for some important issues such as prolonged drug holidays and preferences in initial treatment regimens. More scientific data are likely to be available soon and the SwG will be refined accordingly. The present guidelines are translated from Swedish; they are published on the Medical Products Agency (MPA) and Swedish Reference Group for Antiviral Therapy (RAV) websites (www.mpa.se and www.rav.nu.se), including 7 separate papers based on a thorough literature search. A complete reference list is available on request from the MPA.

Anti-HIV Agents↗

Client narratives: a theoretical perspective.

The role of subjective client narratives in health care represents a clinical and therapeutic tool, useful in complementing objective, scientific data. Of particular interest to mental health practitioners is the role narratives play as a therapeutic tool to guide clinical practice. This paper lays a foundation for understanding the importance of narrative in the psychotherapeutic process. It provides a brief overview of narrative theory and methods of structural analysis in order to provide a theoretical approach that can be utilized by nurses to address clients' needs.

Assertiveness↗

Big decisions based on small numbers: lessons from BSE.

The epidemic of bovine spongiform encephalopathy (BSE) has been the most expensive disaster ever to have befallen farming in the UK. It is believed to have led to a new form of spongiform encephalopathy in humans and as yet there is no way of knowing how many people will die of this disease. In order to curtail the BSE epidemic major decisions had to be made, often on the basis of inadequate scientific data. These data may have been derived from experiments using small sample numbers. Here we review some examples of where this has happened, sometimes with a beneficial outcome and sometimes with a misleading outcome. The identification of BSE as a new disease depended on precise neuropathological observation of a small number of cases rather than the obvious occurrence of large numbers of sick animals. Similarly, the recognition that BSE may have led to disease in humans was based on the neuropathological and clinical picture of new variant Creutzfeldt-Jakob disease (CJD) rather than on an increase in the number of cases of CJD in the UK. Early in the BSE epidemic the possibility that disease could be maternally transmitted from cow to calf was raised, mainly because of a belief that such transmission occurs in scrapie disease of sheep. But, we argue, the evidence for maternal transmission of scrapie, collected in the 1960s, was based on small numbers and is inadequate. Subsequent research has shown a very substantial genetic component in scrapie and epidemiological data show no excess risk in the offspring of affected ewes relative to the risk in the offspring of affected rams. An experiment to determine whether maternal transmission occurs in BSE was flawed and was unable to distinguish between maternal transmission and genetic susceptibility to environmental contamination. An assessment of the risk of BSE to humans depends on determining the levels of infectivity in tissues and transmissibility across species. Data on both of these are deficient, so it is not possible to predict how many people in the UK or elsewhere will become affected with new variant CJD in the next fifty years. The assessment of whether BSE could be transmitted to sheep and whether sheep therefore pose a risk to humans is hampered by a serious lack of evidence about the epidemiology of scrapie in the UK and elsewhere. The UK has paid a heavy price for the BSE epidemic but lessons should be learned from the experience. Every country should have a Specified Offals Ban even if it has no cases of BSE because, by the time it has, it will be too late. Furthermore, the occasional case of BSE should not be regarded as insignificant since it may be the harbinger of an epidemic in the making.

Animals↗

Nutritional ergogenics in athletics.

Nutritional ergogenic aids may be theorized to improve performance in athletics in a variety of ways, primarily by enhancing energy efficiency, energy control or energy production. Athletes have utilized almost every nutrient possible, ranging from amino acids to zinc, as well as numerous purported nutritional substances, such as ginseng, in attempts to enhance physical performance. This review focuses primarily on nutritional ergogenic aids thought to enhance performance by favourably affecting energy metabolism. Although most purported nutritional ergogenic aids have not been shown to enhance physical performance in well-trained, well-nourished athletes, some reliable scientific data support an ergogenic efficacy of several substances, including caffeine, creatine and sodium bicarbonate, but additional research is needed to evaluate their potential for enhancing performance in specific athletics events.

Body Composition↗

Effect of grain storage and processing on chlorpyrifos-methyl and pirimiphos-methyl residues in post-harvest-treated wheat with regard to baby food safety requirements.

A study was undertaken to assess the effects of storage intervals and of milling procedures on the dissipation of chlorpyrifos-methyl and pirimiphos-methyl residues in post-harvest-treated wheat grain and to obtain scientific data on the compliance of the processed products with safety requirements concerning baby foods. The insecticide formulations were applied on stored wheat at recommended rates (20 ml t(-1)). The initial concentration levels in whole grain were determined in samples taken 1 h after treatment. The dissipation of residues and their distribution in different fractions of the milled grain were studied after various storage intervals, from 7 to 270 days after treatment. Samples of treated grain were milled in a fractionating laboratory mill and eight fractions--bran, semolina, three types of groats and three types of flour--were collected and analysed for pesticide residues. The residues were determined by an analytical method based on acetone extraction, graphitized carbon clean-up and GC-ECD, respectively, and GC-NPD determination of residues. The limits of determination of both pesticides were 0.005 mg kg(-1), which is high enough for enforcement of the European Commission Directive that established a maximum residue level of 0.01 mg kg(-1) for any pesticide in cereal-based baby food. The results showed that the pesticides chlorpyrifos-methyl and pirimiphos-methyl applied post-harvest on wheat as grain protectants were distinguished by relatively low rates of degradation in the grain under practical storage conditions. Milling did not significantly reduce the bulk of the chemicals but resulted in the distribution of residues in various processed products. The main part of the insecticides deposited on the grain remained in the bran and partly in semolina fractions. After 270 days of treatment, the residues of chlorpyrifos-methyl were within the range 0.8-2.1 mg kg(-1) and of pirimiphos-methyl - between 0.6 and 3.7 mg kg(-1) in the various types of flour.

Agriculture↗

A profile of Ecstasy (MDMA) use in São Paulo, Brazil: an ethnographic study.

The use of Ecstasy in Brazil has gained visibility in recent years. Nevertheless, scientific data on this issue remain scarce. The present study focused on clarifying this phenomenon by means of qualitative and ethnographic research. Observational studies (N = 8), information obtained from key informants (N = 14) and interviews with Ecstasy users (N = 32) from the city of São Paulo were part of this study. The results pointed to night clubs and rave parties where electronic music is played as the main context of use. Interviews with users revealed a sample of young adult members of the highest layers of society, with a good educational background and access to the labor market. Furthermore, polydrug use was manifested. Users' typology was established regarding the pattern of drug use, showing two profiles of users: the "Rave Generation," consisting of more recent users who initiated this use with the arrival of the large-sized rave parties at the end of the 1990s. The second profile, the "Sons of the Hell's Club," consisted of more experienced users (beginning in the early 1990s) and showed a richer history of use. Neither profile group had sought help regarding their Ecstasy use, and both showed positive beliefs related to the safety of use.

Adult↗

Avian influenza: recent developments.

This paper reviews the worldwide situation regarding avian influenza infections in poultry from 1997 to March 2004. The increase in the number of primary introductions and the scientific data available on the molecular basis of pathogenicity have generated concerns particularly for legislative purposes and for international trade. This has led to a new proposed definition of 'avian influenza' to extend all infections caused by H5 and H7 viruses regardless of their virulence as notifiable diseases, although this has encountered some difficulties in being approved. The paper also reviews the major outbreaks caused by viruses of the H5 or H7 subtype and the control measures applied. The zoonotic aspects of avian influenza, which until 1997 were considered to be of limited relevance in human medicine, are also discussed. The human health implications have now gained importance, both for illness and fatalities that have occurred following natural infection with avian viruses, and for the potential of generating a reassortant virus that could give rise to the next human influenza pandemic.

Animals↗

The evolutionary ethics of Alfred C. Kinsey.

It is commonplace to point out that Alfred Kinsey's taxonomic work on gall wasps provided a methodology for his studies of human sexual behavior. It is equally commonplace to point out that, when researching and presenting his sexual studies, Kinsey's professedly neutral scientific data were constrained by a social agenda. What I have done in this paper is to join these two claims and demonstrate, with particular reference to Kinsey's Sexual Behavior in the Human Male, how his zoology helped guide Kinsey to a naturalistic ethics that, despite contrasts to, shared certain parallel logical failures with the traditional ethics of his critics.

Animals↗

Diet and diabetes, a brief overview: personal perspective.

Over the past several years there has been renewed interest in the dietary management of persons with diabetes. Many of the older concepts are being questioned and dietary recommendations are being revised. A uniform concensus regarding the best diet for insulin-requiring diabetic persons is not available. In my opinion, the best diet, considering our state of knowledge and the limitations imposed by current treatment modalities, is a diet that is most acceptable to the patient as long as it is nutritionally adequate. Once a diet is decided upon, constancy of carbohydrate (CHO) content for each meal is emphasized. A diet low in fat and containing approximately 50-60% CHO is desirable but is not as important as patient compliance. A stable reduction in the plasma glucose concentration in these patients should be the overwhelming objective. Dietary management of non-insulin requiring diabetic persons remains uncertain and controversial. Much more scientific data are needed before dietary recommendations can be made. Nevertheless, one can educate patients regarding CHO containing foods which have a large effect on the postmeal glucose concentration (cooked potatoes and cereal products such as bread and breakfast cereals) and those which produce a smaller effect (milk and milk products, fruits, vegetables, table sugar, and honey). With the interest in the dietary management of diabetic patients at the present time, I look forward to rapid progress in this field and resolution of the current controversies.

Combined Modality Therapy↗

How practice meets guidelines: evaluation of nutrition counselling in Finnish well-women and well-baby clinics.

AIM: To assess the current practices of nutrition counselling given by nurses in well-women (WW) and well-baby (WB) clinics in Finland. DESIGN: A semi-structured questionnaire was distributed to nurses and their clients in clinics nationwide. MAIN OUTCOME MEASURES: The source and the quality of nutrition counselling and specific conditions including allergic diseases and vitamin D supplementation. RESULTS: The clinics constituted the most important source of information for the clients. Personal counselling was highly appreciated. However, 83% of pregnant women reported having received dietary counselling, which deviates from the figure reported by nurses (99%, p=0.0003). Counselling concerning allergies was targeted to reduce the risk of infant allergy by means of elimination diets. In contrast to the report of the nurses (60% in WW and 18% in WB clinics), only 16% (p<0.0001) of the pregnant and 7% (p=0.022) of the breastfeeding women reported that they had been advised to use vitamin D supplements during the winter season. CONCLUSION: This study calls for co-operation between scientists, governmental policy makers and healthcare professionals to ensure a continuous chain of information, applicable to nutrition counselling, from scientific data to everyday practice.

Child Nutrition Sciences↗

Acute promyelocytic leukemia: a case-based review.

Retinoid therapy for acute promyelocytic leukemia (APL) is one of the major achievements of leukemia research in the last 15 years. Use of all trans retinoic acid (ATRA) has changed the prognosis of APL from a fatal leukemia to a highly curable disease. This case-based review examines the available clinical and scientific data to form evidence-based decisions in the management of APL. The main aim of this review is to highlight recent progress made in the management of APL and address the role of maintenance therapy, prognostic factors for relapse and treatment of relapsed disease.

Adult↗

Source profiles of particulate matter emissions from a pilot-scale boiler burning North American coal blends.

Recent awareness of suspected adverse health effects from ambient particulate matter (PM) emission has prompted publication of new standards for fine PM with aerodynamic diameter less than 2.5 microm (PM2.5). However, scientific data on fine PM emissions from various point sources and their characteristics are very limited. Source apportionment methods are applied to identify contributions of individual regional sources to tropospheric particulate concentrations. The existing industrial database developed using traditional source measurement techniques provides total emission rates only, with no details on chemical nature or size characteristics of particulates. This database is inadequate, in current form, to address source-receptor relationships. A source dilution system was developed for sampling and characterization of total PM, PM2.5, and PM10 (i.e., PM with aerodynamic diameter less than 10 pm) from residual oil and coal combustion. This new system has automatic control capabilities for key parameters, such as relative humidity (RH), temperature, and sample dilution. During optimization of the prototype equipment, three North American coal blends were burned using a 0.7-megawatt thermal (MWt) pulverized coal-fired, pilot-scale boiler. Characteristic emission profiles, including PM2.5 and total PM soluble acids, and elemental and carbon concentrations for three coal blends are presented. Preliminary results indicate that volatile trace elements such as Pb, Zn, Ti, and Se are preferentially enriched in PM2.5. PM2.5 is also more concentrated in soluble sulfates relative to total PM. Coal fly ash collected at the outlet of the electrostatic precipitator (ESP) contains about 85-90% PM10 and 30-50% PM2.5. Particles contain the highest elemental concentrations of Si and Al while Ca, Fe, Na, Ba, and K also exist as major elements. Approximately 4-12% of the materials exists as soluble sulfates in fly ash generated by coal blends containing 0.2-0.8% sulfur by mass. Source profile data for an eastern U.S. coal show good agreement with those reported from a similar study done in the United States. Based on the inadequacies identified in the initial sampling equipment, a new, plume-simulating fine PM measurement system with modular components for field use is being developed for determining coal combustion PM source profiles from utility boiler stacks.

Air Movements↗

Clinical and public health implications of macrolide-resistant Streptococcus pneumoniae.

Macrolide resistance among Streptococcus pneumoniae is a growing global concern, although its specific impact on public health is not currently well defined. A Consensus Working Group was convened in March 2001 to address whether credible, scientific data substantiate macrolide resistance in S. pneumoniae as: (i) producing significant morbidity; (ii) creating attendant health and economic burdens; (iii) constituting a public health threat; and (iv) warranting intervention, including development of new antibiotics with efficacy against these strains. Despite the limitations of available clinical data, concern about the possibility of treatment failure with macrolides is being expressed in clinical practice and in formal treatment guidelines, threatening the important role of these agents in the treatment of respiratory tract infections. Further studies are required to monitor and control macrolide resistance and evaluate settings in which macrolide treatment failures are occurring, and new therapeutic interventions are needed.

Adolescent↗

Risk of cancer development in relation to oral contraception.

Combined oral contraceptives (COCs) are among the most widely used effective and reversible means of family planning. Their beneficial effects are well documented, but many questions are still raised concerning a possible association between the use of COCs and the development of cancer. The authors provide a broad and up-to-date review of the literature regarding the relation between COC use and carcinogenesis in different organs. Studies have not unequivocally confirmed that such a relation exists with regard to breast cancer. Much research focused on the influence COC use could have on the incidence of cervical cancer; most of it was analyzed by J. Smith and co-workers. These authors confirmed the existence of a weak relation between COC use and the development of cervical carcinoma, especially in women using COCs for longer periods. Ovarian carcinoma has the worst prognosis of all cancers of reproductive organs in women. The risk of developing ovarian cancer in women using COCs is at least 40% smaller than in other women; the degree of protection given by COCs is directly proportional to the duration of use of this form of contraception. Reliable scientific data prove convincingly that the risk of endometrial cancer is smaller in women who used COCs than in women who never took them.

Breast Neoplasms↗

One-year follow-up using an intense pulsed light source for long-term hair removal.

BACKGROUND: The long-term removal of unwanted hair is a challenge for health care providers. Peer-reviewed scientific data for many of the hair removal laser systems is lacking. OBJECTIVE: This paper provides a chronicle of 24 of the 31 patients who participated in the original 3-month trial for hair removal utilizing an intense pulsed light source. METHODS: A total of 24 of the original 31 patients who took part in the one treatment, 3-month, intense pulsed light trial were examined again at 1 year following the treatment. RESULTS: Long-term epilation of 75% hair removal was found in this group of patients after 1 year with a single treatment. CONCLUSION: The intense pulsed light source is an effective method for providing long-term epilation of unwanted hair.

Adolescent↗

The United States cover-up of Japanese wartime medical atrocities: complicity committed in the national interest and two proposals for contemporary action.

To monopolize the scientific data gained by Japanese physicians and researchers from vivisections and other barbarous experiments performed on living humans in biological warfare programs such as Unit 731, immediately after the war the United States (US) government secretly granted those involved immunity from war crimes prosecution, withdrew vital information from the International Military Tribunal for the Far East, and publicly denounced otherwise irrefutable evidence from other sources such as the Russian Khabarovsk trial. Acting in "the national interest" and for the security of the US, authorities in the US tramped justice and morality, and engaged in what the English common law tradition clearly defines as "complicity after the fact." To repair this historical injustice, the US government should issue an official apology and offer appropriate compensation for having covered up Japanese medical war crimes for six decades. To help prevent similar acts of aiding principal offender(s) in the future, international declarations or codes of human rights and medical ethics should include a clause banning any kind of complicity in any unethical medicine-whether before or after the fact-by any state or group for whatever reasons.

Biological Warfare↗

Occupational intake by dermal exposure to polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in pulp mill industry.

The extent of probable intake of polychlorinated dibenzo-p-dioxins (dioxins) and polychlorinated dibenzofurans (furans) from exposure to process liquor, effluent, sludge, and pulp contaminated with dioxins/furans in pulp mills was examined. It is expected that intake of dioxins/furans by skin exposure may exceed their intake by inhalation. Limiting skin exposure to these chemicals should receive similar emphasis as inhalation exposure to volatile chemicals. Because of an inadequate scientific data base, assumptions erring toward safety had to be made in estimating the intake from potential exposures. Therefore, the calculated intakes are likely to be overestimates.

Absorption↗

Mold hysteria: origin of the hoax.

The topic of building related illness came into the public's eye as a major health issue in the mid 1970s, when several cases of pneumonia were found to be associated with an infectious agent in Philadelphia. This agent was subsequently found to be a gram-positive bacterium known as Legionella pneumoniae. During the ensuing 30 years, a myriad of symptom constellations, disorders, clinical syndromes and illnesses have been attributed to indoor living or working environments. Over time, there appeared to be no limit to claims of building related illness, and it was "reported" that almost any kind of clinical symptom, real or imaginary, could be blamed on indoor environments. As society became more and more litigious, many of these disorders were erroneously played out in courtrooms rather than medical offices, creating a circus atmosphere surrounding this class of disorders. With the advent of the internet, as well as other advances in telecommunications, these issues eventually became part of a media frenzy, and all truths could be thrown out the window as issues became more and more decided upon by emotions and unfounded beliefs, rather than scientific data and logical thinking.

Compensation and Redress↗