RESUMEN
Excessive high fat diet (HFD) consumption can induce food addiction, which is believed to involve the communication between the hypothalamus and mesolimbic dopaminergic neurons, originating in the ventral tegmental area (VTA) and projecting to the nucleus accumbens (NAc). These brain areas are densely populated with opioid receptors, raising the possibility that these receptors, and particularly mu opioid receptors (MORs), are involved in rewards elicited by palatable food. This study sought to investigate the involvement of MORs in HFD-induced reward and if there is any difference between male and female subjects in this response. We also assessed if exposure to HFD would alter the rewarding action of oxycodone, a relatively selective MOR agonist. The place conditioning paradigm was used as an animal model of reward to determine if short-time (STC, 2 h) or long-time (LTC, 16 h) conditioning with HFD induces reward or alters the rewarding action of oxycodone. Male and female C57BL/6J mice as well as MOR knockout and their wildtype littermates of both sexes were tested for basal place preference on day 1 and then conditioned with an HFD in one chamber and a regular chow diet (RCD) in another chamber for 2 h on alternate days. Three sets of STC were used, followed by a set of LTC. Each set of conditioning consisted of two conditioning with RCD and two conditioning with HFD. Mice were tested for place preference after each set of STC and again after LTC. Controls were conditioned with RCD in both conditioning chambers. Following the last place preference test, mice were treated with oxycodone and conditioned in the HFD-paired chamber and with saline in the RCD-paired chamber for one hour once a day to explore the possibility if the HFD could alter oxycodone reward. The result showed that HFD induced conditioned place preference (CPP) in male but not female subjects. However, oxycodone conditioning elicited reward in both male and female mice of the HFD group but not the control group, showing that prior conditioning with HFD potentiated the rewarding action of oxycodone. The latter response was mediated via MORs, as it was blunted in MOR knockout mice. Similarly, HFD-induced CPP was blunted in male MOR knockout mice, suggesting sexual dimorphism in this response.
RESUMEN
The aim of study was to find effective treatment option which reduces the risk of complications among patients of polycystic-ovarian-syndrome. A cross-sectional study was conducted from January-2019 to December-2019. Data was collected from 200 patients that have visited hospitals and clinics located in Karachi. A questionnaire was used in the survey. Collected data was analyzed with SPSS-22. Hormonal-imbalance (p=0.0001), polycystic-ovaries (p=0.008), irregular-menstruation (p=0.0001), obesity (p=0.0001), diabetes (p=0.0001) and infertility (p=0.014) significantly treated by allopathic-medications. Hormonal-imbalance (p=0.025), polycystic-ovaries (p=0.0001), irregular-menstruation (p=0.0001), obesity (p=0.046), diabetes (p=0.001), acne (p=0.046), anxiety (p=0.014), depression (p=0.014) and eating disorder (p=0.046) significantly treated by homeopathic-medications. Polycystic-ovaries (p=0.0001), irregular-menstruation (p=0.0001), obesity (p=0.014), diabetes (p=0.0001) and acne (p=0.014) significantly treated by herbal-medications. Allopathic treatment was found effective in reducing risk of complication associated with PCOS; hormonal-imbalance (59%), hirsutism (42%), obesity (89%), diabetes (90%), hypertension (17%), infertility (60%) and anxiety (75%). Risk reduction of complications by Homeopathic treatment; polycystic-ovaries (54%), irregular menstruation (91%) and depression (43%). Combination treatment was found effective in reducing the risk of acne (43%) and eating disorder (100%). Allopathic treatment is effective in reducing the majority of risks of complications and the complications of polycystic-ovaries-syndrome can be significantly controlled with the homeopathic mode of treatment.
Asunto(s)
Acné Vulgar , Infertilidad , Síndrome del Ovario Poliquístico , Acné Vulgar/complicaciones , Estudios Transversales , Femenino , Humanos , Infertilidad/complicaciones , Obesidad/complicaciones , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/terapia , Conducta de Reducción del RiesgoRESUMEN
Evidence suggests that nicotine and alcohol can each serve as a gateway drug. We determined whether prior nicotine and alcohol treatment would alter amphetamine reward. Also, we examined whether age and dopaminergic neurotransmission are important in this regard. Male and female adolescent and adult C57BL/6J mice were tested for baseline place preference. Mice then received six conditioning with saline/nicotine (0.25 mg/kg) twice daily, followed by six conditioning with saline/ethanol (2 g/kg). Control mice were conditioned with saline/saline throughout. Finally, mice were conditioned with amphetamine (3 mg/kg), once in the nicotine-alcohol-paired chamber, and tested for place preference 24 h later. The following day, mice were challenged with amphetamine (1 mg/kg) and tested for place preference under a drugged state. Mice were then immediately euthanized, their brain removed, and nucleus accumbens isolated and processed for the level of dopamine receptors and transporter and glutamate receptors. We observed a greater amphetamine-induced place preference in naïve adolescents than adult mice with no change in state-dependent place preference between the two age groups. In contrast, amphetamine induced a significant place preference in adult but not adolescent mice with prior nicotine-alcohol exposure under the drug-free state. The preference was significantly greater in adults than adolescents under the drugged state. The enhanced response was associated with higher dopamine-transporter and D1 but reduced D2 receptors' expression in adult rather than adolescent mice, with no changes in glutamate receptors levels. These results suggest that prior nicotine and alcohol treatment differentially alters amphetamine reward in adult and adolescent mice. Alterations in dopaminergic neurotransmission may be involved in this phenotype.
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Recent evidence implicates endogenous pituitary adenylyl cyclase activating polypeptide (PACAP) in the aversive effect of nicotine. In the present study, we assessed if nicotine-induced conditioned place preference (CPP) or affective signs of nicotine withdrawal would be altered in the absence of PACAP and if there were any sex-related differences in these responses. Male and female mice lacking PACAP and their wild-type controls were tested for baseline place preference on day 1, received conditioning with saline or nicotine (1 mg/kg) on alternate days for 6 days and were then tested for CPP the next day. Mice were then exposed to four additional conditioning and were tested again for nicotine-induced CPP 24 hr later. Controls were conditioned with saline in both chambers and tested similarly. All mice were then, 96 hr later, challenged with mecamylamine (3 mg/kg), and tested for anxiety-like behaviors 30 min later. Mice were then, 2 hr later, forced to swim for 15 min and then tested for depression-like behaviors 24 hr later. Our results showed that male but not female mice lacking PACAP expressed a significant CPP that was comparable to their wild-type controls. In contrast, male but not female mice lacking PACAP exhibited reduced anxiety- and depression-like behaviors compared to their wild-type controls following the mecamylamine challenge. These results suggest that endogenous PACAP is involved in affective signs of nicotine withdrawal, but there is a sex-related difference in this response.
Asunto(s)
Condicionamiento Psicológico/fisiología , Nicotina/farmacología , Polipéptido Hipofisario Activador de la Adenilato-Ciclasa/fisiología , Síndrome de Abstinencia a Sustancias/fisiopatología , Animales , Ansiedad , Depresión , Femenino , Masculino , Mecamilamina/farmacología , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Polipéptido Hipofisario Activador de la Adenilato-Ciclasa/deficiencia , Factores Sexuales , Síndrome de Abstinencia a Sustancias/genética , Tabaquismo/psicologíaRESUMEN
Pituitary adenylyl cyclase activating polypeptide (PACAP) was originally isolated from the hypothalamus and found to stimulate adenylyl cyclase in the pituitary. Later studies showed that this peptide and its receptors (PAC1, VPAC1, and VPAC2) are widely expressed in the central nervous system (CNS). Consistent with its distribution in the CNS, the PACAP/PAC1 receptor system is involved in several physiological responses, such as mediation of the stress response, modulation of nociception, regulation of prolactin release, food intake, etc. This system is also implicated in different pathological states, e.g., affective component of nociceptive processing, anxiety, depression, schizophrenia, and post-traumatic stress disorders. A review of the literature on PubMed revealed that PACAP and its receptors also play a significant role in the actions of addictive drugs. The goal of this review is to discuss the literature regarding the involvements of PACAP and its receptors in the motivational effects of addictive drugs. We particularly focus on the role of this peptide in the motivational effects of morphine, alcohol, nicotine, amphetamine, methamphetamine, and cocaine. This article is part of the special issue on Neuropeptides.
Asunto(s)
Motivación/efectos de los fármacos , Polipéptido Hipofisario Activador de la Adenilato-Ciclasa/fisiología , Hipófisis/fisiopatología , Receptores del Polipéptido Activador de la Adenilato-Ciclasa Hipofisaria/efectos de los fármacos , Trastornos Relacionados con Sustancias/psicología , Animales , HumanosRESUMEN
In this study we have compared two different types of therapies i.e. herbal and allopathic system of therapies for Depression and studied them from the social perspectives. The Hypericum perforatum is compared with Fluoxetine [HCL] in terms of cost-utility and financial savings thereby evaluating its influence on annual expenditure of depressive patients that were randomly selected from 178 union councils of the city of Karachi, Pakistan. For both system of therapies a total of 356 patients were selected by stratified random sampling. Taking frequency of depression as '1' annually with discount rate at 3% for calculating the burden-of-illness in terms of disability-adjusted-life-years. The cost-utility and the budget-impact assessments were carried out to assess incremental-cost-effectiveness-ratio, and the budget-impact-per-onset as well as budget-impact-per-year values. In comparison with the Fluoxetine therapy, the Hypericum perforatum was found to relieve symptoms in 21.47% less cost; owing 29.23% less disability-adjusted-life-years and 21.45% less budget-impact-per-onset as well as budget-impact-per-year. The annual mean incremental-cost-effectiveness-ratio was found to be at 36.95±270.74 (less than GDP per capita threshold of Rs. 38,173.02). Hypericum perforatum provide the optimal utility with less impact on budget of a patient in comparison with the treatment of symptoms of depression with Fluoxetine.
RESUMEN
Analgesic, anti-inflammatory and diuretic activities of the methanol extract of two varieties of Cicer arietinum viz black or Desi and white or Kabuli were tested in the doses of 200 and 400 mg/kg. For analgesic effect of the extracts, acetic acid induced writhing, tail immersion and hot plate tests were employed in mice. The anti-inflammatory activity was carried out by carrageenan induced inflammation in rats, whereas the diuretic action was determined using metabolic cages for rats. Animals were divided into six groups (n=7): (1) Control (2) Standard (3) MECAB 200 (4) MECAB 400 (5) MECAW 200 (6) MECAW 400. All extracts and standard drugs were administered orally. Acute oral toxicity of the extracts was also checked in mice up to 2000mg/kg dose, which showed a favorable safety. Significant analgesic and anti-inflammatory effects were observed. The results of diuretic activity were significant at 12th and 24th hrs. Therefore, it is concluded that the methanol extracts of the seeds of Cicer arietinum have analgesic, anti-inflammatory and diuretic potential.