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PubMed2006

Epidemic of HIV coupled with hepatitis C virus among injecting drug users of Himalayan West Bengal, Eastern India, Bordering Nepal, Bhutan, and Bangladesh.

A study was conducted in June 2004 to find out the epidemiology of HIV infection among injecting drug users (IDUs) of Darjeeling District of West Bengal, eastern India. The district headquarter, Darjeeling town, also known as "Queen of Hills," is a beautiful spot situated in Himalayan West Bengal that attracts a large number of tourists each year from all over the world. Another unique feature of the district is that it has international boundaries with three countries, Nepal, Bhutan, and Bangladesh. Siliguri, the part of the district on plains, acts as a transit station for these countries as well as to the entire Himalayan region of West Bengal and neighboring state, Sikkim. It is also a transit point to all northeastern states of India: Assam, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Meghalaya, and Tripura. Two hundred twenty-eight study subjects (IDUs) were included in this community-based cross-sectional study from all four subdivisions of the district. Informed consent was obtained, and then personal interviews, followed by blood testing were performed using unlinked anonymous procedure. The study revealed that overall HIV seroprevalence among IDUs was 11.8% (n = 27; 95% confidence interval, 7.9-16.7), whereas seroprevalence of hepatitis C was found to be 47.7% (n = 97). Prevalence of HIV was higher in subjects from hill districts (13.5%) compared with subjects from the plains (9.2%). It also revealed that most IDUs (75.3%) used "brown sugar," an impure form of heroin, as their major addictive substance followed by injection norphine. Sharing of injecting equipment was found to be as high as 67% among IDUs, and sharing of drugs from common ampules was found to be 35.5% of the studied subjects (n = 93). Most subjects (96%) were found to clean their injecting paraphernalia with plain water. Most IDUs (98%) were found to inject intravenously. About 52% of IDUs visited sex workers one or more times within the last 1 year, and 15% of the interviewed subjects (n = 93) reported to suffer from sexually transmitted diseases during the same period. All the IDUs knew about HIV/AIDS. About 69% of the subjects knew that apparently healthy looking person might have HIV infection. HIV was found to be associated significantly with age of the injectors and duration of injecting practices. The study revealed the epidemic of HIV and hepatitis C among IDU populations at this bordering district of West Bengal for the first time that requires urgent intervention at local, national, and international levels.

Adolescent↗
PubMed2002

Metabolic effects of the consumption of Areca catechu.

Betel nut (Areca catechu) is chewed regularly by at least 10% of the world population, imported by immigrant users wherever they settle, and is the fourth most widely used addictive substance. It is thought, by users, to soothe the digestion and to be a stimulant and its use has a major role in social situations. Specific arecal alkaloids act as competitive inhibitors of GABA receptors and have widespread effects in the body, including actions on the brain, cardiovascular system, lungs, gut and pancreas. Nitrosated derivatives of arecal alkaloids, proven carcinogens inducing tumours throughout the upper gut and foregut derivatives in animals, are also associated with increased tumour risks in man. These nitrosated compounds are also diabetogenic in CD1 mice, producing a type 2 diabetes with obesity. Increased central obesity is found in association with betel usage in man as well as increases in circulating markers of inflammatory and cardiovascular damage. The effects of chronic betel usage in man are at least as diverse as those of smoking and the habit increases the risks of ill health.

Animals↗
PubMed1986

Economic aspects of addiction policy.

One definition of policy or government action in the Oxford English Dictionary is "craftiness" i.e. cunning or deceit. Such qualities have to be employed by governments because of the potential vote-losing effects of radical addiction policies. Health promotion, in relation to addictive substances such as alcohol and tobacco in particular, involves a trade-off between the costs of such policies, especially to industry (which seeks regulation to protect itself from competitors), and the benefits--improvements in the quality and length of life. Measures of such benefits (quality-adjusted life-years or QALYs) are available now to use in the evaluation of competing health promotion policies to determine their efficiency at the margin. Analysis of the market for tobacco indicates that consumption has been falling generally in the UK except among teenagers who appear to be the target of the industry's advertising and sponsorship efforts. This fall in consumption appears to be explained by health promotion rather than the active use of fiscal instruments of control. The recognition of the health effects of passive smoking and the impact of advertising and sponsorship, especially on the young, are policy areas requiring careful review and the evaluation of the costs and benefits of competing policies.(ABSTRACT TRUNCATED AT 250 WORDS)

Alcoholism↗
PubMed1997

Smoking and nicotine addiction: a pediatric epidemic with sequelae in adulthood.

Pediatric addiction to nicotine from cigarette smoking is a major public health problem, extracting a tremendous societal toll in terms of human suffering, a loss of future productivity, and the consumption of scarce health care resources. Teenagers smoke 1.1 billion packs of cigarettes yearly and will account for more than $200 billion in future health care costs. Recent behavioral studies confirm nicotine's ability to induce in adolescents both the tolerance and abstinence phenomena typical of other addicting substances. A range of adverse health effects, first detectable in adolescent cigarette smokers, extend into adulthood. Through the effects of environmental smoke or smoking during pregnancy, adolescent smokers affect not only their own health, but that of friends, family members, and even their own fetuses and children. Additional research into effective prevention and smoking cessation programs is urgently needed to forestall the ravaging of yet another generation by this preventable and deadly habit.

Adolescent↗
PubMed1989

The demand for tobacco products in Finland.

Four time-series models are introduced for analysing the demand for addictive substances. The models are applied to estimate the demand for tobacco products in Finland. Separate models were found appropriate for different products. The price of cigarettes is the most important single determinant of the demand for tobacco products. The demand for cigarettes is twice as sensitive to falling prices (elasticity - 0.94) than to rising prices (elasticity - 0.49). The demand for cigarettes is also responsive to changes in real income. The most important factor influencing the demand for pipe tobacco is the price of cigarettes. The demand for cigars is adequately explained by changes in its price. The 1977 Tobacco Act and the anti-smoking publicity preceding it appear to have reduced the cigarette demand permanently by 7%. The results imply that taxation would seem a powerful instrument for achieving the objectives of restricting consumption of tobacco products and raising government revenue. Yet, taxation together with extensive anti-smoking publicity would have a more advantageous effect than either of them used in isolation.

Adolescent↗
PubMed2006

Long-term effects of an educational intervention on self-medication and appropriate drug use in single-sex secondary public schools, Quito, Ecuador.

WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT: *Self-medication is extensively practised in both developed and less-developed countries, sometimes inappropriately. *Educational intervention in secondary schools has been proven to be useful. *Most educational interventions in adolescent populations have focused on the reduction of addictive substance abuse. WHAT THIS STUDY ADDS: *Educational intervention can improve knowledge about self-medication and reduce misconceptions about diarrhoea, common cold and vitamins in an adolescent population. *A specific lecture followed by small working-group seminars produces better results than a general lecture alone in terms of 'knowledge' and 'attitude'. *The positive effects of the intervention are detectable even 1 year later. Yearly reinforcing interventions while in secondary school would allow long-lasting effects. AIM: Improving knowledge about rational drug use at an early age may be a good way to increase the population's awareness of health, medicines and self-medication. We set out to evaluate the short- and long-term effects of an educational intervention to promote rational drug use and self-medication in secondary school students. METHODS: A non-randomized, controlled clinical trial. The participants were 367 female students (10-13 years old) from two secondary public schools of the metropolitan district of Quito (Ecuador). The educational campaign had two components [a specific lecture (intervention and control schools) and subsequent small working group seminars (intervention school)] providing short and clear messages of five topics related to rational drug use. The main outcome measures were an increase in 'knowledge' short term (1 month) and long term (up to 1 year) after intervention and the relative risk (RR) reduction in misconceptions or wrong ideas about medicine use. RESULTS: The intervention group showed a significant increase in knowledge both short and long term and in comparison with the control group, mainly regarding oral rehydration salts preparation (+59.4%; P < 0.001), lack of multivitamin energizer action (+57.4%; P < 0.001), healthy growth effects (+53.3%; P < 0.001) and the perception that medicines' promotional activities do not teach how to take care of health (+54.0%; P < 0.001). A RR reduction in misconceptions about drugs was found short term and long term. The intervention group was less predisposed to consume antidiarrhoeals [RR = 0.75, 95% confidence interval (CI) 0.62, 0.92], cough suppressants (0.44, 95% CI 0.35, 0.55) and other medicines for the common cold (0.56, 95% CI 0.45, 0.70). Misconceptions concerning the benefits of multivitamin preparations were reduced in 73%; additionally, the intervention group showed a decrease in their consumption (43.9% basal; 25.3% short term and 25.6% long term; P < 0.001). CONCLUSION: It is possible to achieve a favourable modification of attitudes to appropriate use of medicines in a teenage population and this modification lasts at least 1 year. Continuous reinforcing interventions would allow better and long-lasting effects and could help to fill the gap in health education of the general population.

Adolescent↗
PubMed1995

Archetypal foundations of addiction and recovery.

Addiction recovery takes place at an archetypal level. This is quite visible in the formulation of the twelve steps of AA which refer to forces in illness and recovery, e.g., a take-over by the addictive substances or process that renders one's life unmanageable and often devastated and the strong need to be in relation to a higher power for restoration of one's life. Many people respond to recovery programmes without getting into their individual psychology per se, but a number can benefit from analytic therapy which recognizes the archetypal level of psychic life. For those individuals analysis in conjunction with AA twelve step programmes can facilitate recovery, even as recovery facilitates analysis.

Adult↗
PubMed2006

Addictive drugs and their relationship with infectious diseases.

The use of drugs of abuse, both recreationally and medicinally, may be related to serious public health concerns. There is a relationship between addictive drugs of abuse such as alcohol and nicotine in cigarette smoke, as well as illegal drugs such as opiates, cocaine and marijuana, and increased susceptibility to infections. The nature and mechanisms of immunomodulation induced by such drugs of abuse are described in this review. The effects of opiates and marijuana, using animal models as well as in vitro studies with immune cells from experimental animals and humans, have shown that immunomodulation induced by these drugs is mainly receptor-mediated, either directly by interaction with specific receptors on immune cells or indirectly by reaction with similar receptors on cells of the nervous system. Similar studies also show that cocaine and nicotine have marked immunomodulatory effects, which are mainly receptor-mediated. Both cocaine, an illegal drug, and nicotine, a widely used legal addictive component of cigarettes, are markedly immunomodulatory and increase susceptibility to infection. The nature and mechanism of immunomodulation induced by alcohol, the most widely used addictive substance of abuse, are similar but immunomodulatory effects, although not receptor-mediated. The many research studies on the effects of these drugs on immunity and increased susceptibility to infectious diseases, including AIDS, are providing a better understanding of the complex interactions between immunity, infections and substance abuse.

Acquired Immunodeficiency Syndrome↗
PubMed1986

Mortality of patients dependent on benzodiazepines.

For patients dependent on benzodiazepines alone, or in combination with alcohol and/or other legal and illegal drugs, observed mortality rates were compared with the average population, and, in cases of isolated benzodiazepine dependence, also with a control group of non-dependent patients chosen to match each dependent not only in sex and date of birth, but also in pre-existing psychiatric illness besides dependence. For patients with an isolated benzodiazepine dependence, the mortality rate was increased, when compared with the average population, by a ratio of observed to expected numbers of deaths of about 3. However, this mortality rate did not differ from that of the control group (non-dependent patients with comparable psychiatric illnesses). For patients combining benzodiazepines with alcohol among other addictive drugs, and for patients combining benzodiazepines with illegal drugs among other addictive substances, the ratio of observed to excepted numbers of deaths was 6.2 resp. 21, thus corresponding well with other studies on mortality rates associated with alcoholism and dependence on illegal drugs. We conclude that our study does not give evidence of higher risk of early death correlated with dependence on benzodiazepines alone. However, it confirms the well-known fact of increased mortality rates in patients with psychiatric illnesses, especially with dependence on alcohol or illegal drugs.

Adult↗
PubMed1987

Decreased incidence of intraventricular hemorrhage in infants of opiate dependent mothers.

The incidence of intraventricular hemorrhage (IVH) in infants born to opiate dependent mothers was compared to infants whose mothers denied the use of addicting substances. The two groups were comparable in birth weight, gestational age, 1 and 5 min Apgar scores, and sex distribution. The incidence of breech presentations, PROM, and type of anesthesia at delivery were similar. However, more infants in the control group were delivered by cesarean section. The incidence of IVH was 52% in the controls and 23% in the opiate infants (p less than 0.05). Neonatal risk factors such as use of ventilators, incidence of pneumothorax, administration of pressor and sedative drugs, acidosis, use of alkali therapy and volume expanders, fluid therapy in the first three days and transfers to other hospitals were the same.

Cerebral Hemorrhage↗
PubMed2000

Ibogaine: complex pharmacokinetics, concerns for safety, and preliminary efficacy measures.

Ibogaine is an indole alkaloid found in the roots of Tabernanthe Iboga (Apocynaceae family), a rain forest shrub that is native to western Africa. Ibogaine is used by indigenous peoples in low doses to combat fatigue, hunger and thirst, and in higher doses as a sacrament in religious rituals. Members of American and European addict self-help groups have claimed that ibogaine promotes long-term drug abstinence from addictive substances, including psychostimulants and opiates. Anecdotal reports attest that a single dose of ibogaine eliminates opiate withdrawal symptoms and reduces drug craving for extended periods of time. The purported efficacy of ibogaine for the treatment of drug dependence may be due in part to an active metabolite. The majority of ibogaine biotransformation proceeds via CYP2D6, including the O-demethylation of ibogaine to 12-hydroxyibogamine (noribogaine). Blood concentration-time effect profiles of ibogaine and noribogaine obtained for individual subjects after single oral dose administrations demonstrate complex pharmacokinetic profiles. Ibogaine has shown preliminary efficacy for opiate detoxification and for short-term stabilization of drug-dependent persons as they prepare to enter substance abuse treatment. We report here that ibogaine significantly decreased craving for cocaine and heroin during inpatient detoxification. Self-reports of depressive symptoms were also significantly lower after ibogaine treatment and at 30 days after program discharge. Because ibogaine is cleared rapidly from the blood, the beneficial aftereffects of the drug on craving and depressed mood may be related to the effects of noribogaine on the central nervous system.

Adult↗
PubMed2006

GABA(B) receptor-mediated modulation of hypocretin/orexin neurones in mouse hypothalamus.

Hypocretin/orexin (Hcrt) is a critical neurotransmitter for the maintenance of wakefulness and has been implicated in several other functions, including energy metabolism and reward. Using whole-cell patch-clamp recordings from transgenic mice in which enhanced green fluorescent protein was linked to the Hcrt promoter, we investigated GABAergic control of the Hcrt neurones in hypothalamic slices. Bath application of GABA or muscimol caused an early hyperpolarization mediated by Cl(-) and a late depolarization mediated by the efflux of bicarbonate. These GABA(A) receptor-mediated responses were blocked by picrotoxin and bicuculline. Under the GABA(A) blockade condition, GABA produced consistent hyperpolarization, decreased firing rate and input resistance. The selective GABA(B) agonist (R)-baclofen caused a similar response with an EC(50) of 7.1 mum. The effects of (R)-baclofen were blocked by the GABA(B) antagonist CGP 52432 but persisted in the presence of tetrodotoxin, suggesting direct postsynaptic effects. The existence of GABA(B) modulation was supported by GABA(B(1)) subunit immunoreactivity on Hcrt cells colabelled with antisera to the Hcrt-2 peptide. Furthermore, GABA(B) receptor activation inhibited the presynaptic release of both glutamate and GABA. (R)-Baclofen depressed the amplitude of evoked excitatory postsynaptic currents (EPSCs) and inhibitory synaptic currents (IPSCs), and also decreased the frequency of both spontaneous and miniature EPSCs and IPSCs with a modest effect on their amplitudes. These data suggest that GABA(B) receptors modulate Hcrt neuronal activity via both pre- and postsynaptic mechanisms, which may underlie the promotion of non-rapid eye movement sleep and have implications for the use of GABA(B) agonists in the treatment of substance addiction through direct interaction with the Hcrt system.

Action Potentials↗
PubMed2006

[Risk factors in experimenting with and consumption of tobacco by 12-14 year-old school students. Attitudes to tobacco in pressure groups].

INTRODUCTION: Tobacco is the first addictive substance that adolescents and school-children have contact with. The presence of family members and friends as smokers in their environment is related to tobacco experimentation. OBJECTIVES: To describe experimentation and consumption of tobacco in secondary school students (ESO); to identify the attitudes related to smoking; and to study the relationship between smoking by family members, friends and teachers and students' own experimentation and consumption. METHODS: Observational, prospective study at the "Los Cantos" secondary school, Bullas, Murcia, Spain. POPULATION: students from the first, second and third years of ESO, analysed in December 2000 and 2001. The variables studied were collected with the FRISC questionnaire. RESULTS: The population had 529 students, 293 of them boys, with average age 13.2. A total of 328 had smoked sometime (62%) and 19.1% smoked habitually. Attitudes related with smoking were: "smoking makes you feel better" (P<.001), "smoking is fun" (P<.001), "smoking helps to make friends" (P<.001) and "I'd accept a cigarette from a friend" (P<.001). Tobacco experimentation was related to friends/companions smoking (OR=2.402; 95% CI, 1.591-3.628), to the presence of a mother and older siblings smoking (OR=2.703; 95% CI, 1.574-4.642), and to the presence of friends/companions smoking (OR=6.342; 95% CI, 3.102-12.964). CONCLUSION: Experimentation and consumption of tobacco in the population studied is very high. The most important risk factors for students smoking are the conduct of friends and of older siblings.

Adolescent↗
PubMed1990

Effects of doxepin on withdrawal symptoms in smoking cessation.

In a double-blind study, 15 cigarette smokers self-monitored 10 withdrawal symptoms. For the first 21 days (baseline), subjects received doxepin hydrochloride, up to 150 mg/day, or inert medication while continuing to smoke. On day 22, they were instructed to stop smoking; medication was continued. Withdrawal symptoms on the first 28 days of treatment (baseline and 7 days of attempted cessation) were analyzed. During cessation, subjects taking doxepin reported significantly less craving for cigarettes. Results from this study and others suggest that antidepressants may attenuate the severity of symptoms during withdrawal from addictive substances.

Adult↗
PubMed1998

Nicotine-induced limbic cortical activation in the human brain: a functional MRI study.

OBJECTIVE: Nicotine is a highly addictive substance, and cigarette smoking is a major cause of premature death among humans. Little is known about the neuropharmacology and sites of action of nicotine in the human brain. Such knowledge might help in the development of new behavioral and pharmacological therapies to aid in treating nicotine dependence and to improve smoking cessation success rates. METHOD: Functional magnetic resonance imaging, a real-time imaging technique, was used to determine the acute CNS effects of intravenous nicotine in 16 active cigarette smokers. An injection of saline followed by injections of three doses of nicotine (0.75, 1.50, and 2.25 mg/70 kg of weight) were each administered intravenously over 1-minute periods in an ascending, cumulative-dosing paradigm while whole brain gradient-echo, echo-planar images were acquired every 6 seconds during consecutive 20-minute trials. RESULTS: Nicotine induced a dose-dependent increase in several behavioral parameters, including feelings of "rush" and "high" and drug liking. Nicotine also induced a dose-dependent increase in neuronal activity in a distributed system of brain regions, including the nucleus accumbens, amygdala, cingulate, and frontal lobes. Activation in these structures is consistent with nicotine's behavior-arousing and behavior-reinforcing properties in humans. CONCLUSIONS: The identified brain regions have been previously shown to participate in the reinforcing, mood-elevating, and cognitive properties of other abused drugs such as cocaine, amphetamine, and opiates, suggesting that nicotine acts similarly in the human brain to produce its reinforcing and dependence properties.

Adolescent↗
PubMed2003

Are there cognitive and behavioural approaches specific to the treatment of pathological gambling?

OBJECTIVE: Treatment approaches for pathological gambling have been modelled after preexisting substance addiction models. This paper reviews cognitive-behavioural models in a search for original insights that are specific to gambling treatment. METHOD: A computerized search of major health care databases (Medline and PsycINFO) was performed. RESULTS: New cognitive-behavioural approaches to the treatment of pathological gambling provide 3 original additions to the traditional multimodal treatment of addictions: cognitive restructuring, in vivo exposure, and imaginal desensitization. Other cognitive-behavioural techniques, such as relapse prevention, problem solving, and social skill training, are shared by gambling treatment and addictions treatment. CONCLUSIONS: When treating pathological gamblers, clinicians must consider introducing techniques to address cognitive distortions related to gambling. Also, cue exposure--whether in vivo or imaginal--may help deal with urges prompted by such cues. The blending of these new techniques into a multimodal addiction treatment potentially balances the rational and external orientation of the cognitive-behavioural approach with interpersonal and introspective components of the traditional addiction treatment.

Cognitive Behavioral Therapy↗
PubMed1990

Consumer-centric advocacy: its connection to nursing frameworks.

The concept of advocacy is redefined here as consumer-centric advocacy and its essential attributes are identified. Theoretical linkages between advocacy and selected nursing models are described. Specifically, the construct of advocacy is considered as it is operationalized within the theoretical frameworks of King, Newman, Orem, and Rogers. The health care system in the United States is in a state of unrest and undergoing nearly continuous change and reorganization. This reorganization has been hastened by tightened resources within the health care financing system, a growing number of elderly and indigent needing care, and the advent of care intensive disease processes such as AIDS and substance addicted newborns. In addition, the general public has become better informed concerning health and is seeking new approaches to the delivery of health care services. As changes in the health care system continue to occur, the role of nurses, the largest group of health care providers also is changing. In a system in which there is both a shortage of registered nurses and a growing demand for their services, nurses must develop strategies to maximize their impact on the health care system to meet the needs of consumers as well as protect their own professional integrity. The development of such strategies within nursing frameworks may be facilitated by closer scrutiny and clarification of the nurse's traditional role as advocate.

Consumer Advocacy↗
PubMed2006

Predictors of betel quid chewing behavior and cessation patterns in Taiwan aborigines.

BACKGROUND: Betel quid, chewed by about 600 million people worldwide, is one of the most widely used addictive substances. Cessation factors in betel quid chewers are unknown. The present study explores prevalence and the quit rate of betel quid chewing in Taiwan aborigines. Our goal was to delineate potential predictors of chewing cessation. METHODS: A stratified random community-based survey was designed for the entire aborigines communities in Taiwan. A total of 7144 participants were included between June 2003 and May 2004 in this study. Information on sociodemographic characteristics, such as gender, age, obesity, education years, marital status, ethnicity, and habits of betel quid chewing, smoking and drinking was collected by trained interviewers. RESULTS: The prevalence of betel quid chewers was 46.1%. Betel quid chewing was closely associated with obesity (OR = 1.61; 95% CI: 1.40-1.85). Betel quid chewers were most likely to use alcohol and cigarettes together. Quit rate of betel quid chewers was 7.6%. Betel quid chewers who did not drink alcohol were more likely to quit (OR = 1.89; 95% CI: 1.43-2.50). Alcohol use is a significant factor related to cessation of betel quid chewing, but smoking is not. CONCLUSION: Taiwan aborigines have a high prevalence of betel quid chewers and a low quit rate. Alcohol use is strongly association with betel quid chewing. Efforts to reduce habitual alcohol consumption might be of benefit in cessation of betel quid chewing.

Adolescent↗