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1.
Malar J ; 23(1): 261, 2024 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-39210367

RESUMEN

BACKGROUND: The burden of malaria persists in sub-Saharan Africa and the emergence of artemisinin resistance has introduced complexity to control efforts. Monitoring the efficacy of artemisinin-based treatment for malaria is crucial to address this challenge. This study assessed treatment efficacy of artemether-lumefantrine (AL) and genetic diversity of Plasmodium falciparum isolates in a Nigerian population. METHODS: Participants presenting with clinical symptoms of uncomplicated malaria at a health centre in Lagos, Nigeria, were screened for P. falciparum. Enrolled participants were treated with AL and monitored through scheduled check-up visits, clinical and laboratory examinations for 28 days. Parasite clearance and genetic diversity were assessed through polymerase chain reaction (PCR) analysis of merozoite surface proteins (msp1 and msp2). The prevalence of drug resistance mutations was assessed by P. falciparum multidrug resistance gene 1 (mdr1) genotyping followed by P. falciparum ubiquitin-specific protease 1 (ubp1) gene sequencing. RESULTS: The PCR-uncorrected treatment outcome revealed 94.4% adequate clinical and parasitological response (ACPR) and 5.6% late parasitological failure (LPF) rates. After PCR correction, no suspected LPF case was detected and ACPR 67/67 (100%) was achieved in all the individuals. Moreover, a high prevalence of wild-type alleles for mdr1 N86Y (93.7%), and mdr1 D1246Y (87.5%) was observed. Genetic diversity analysis revealed predominant K1 allelic family for msp1 (90.2%) and FC27 for msp2 (64.4%). Estimated multiplicity of infection (MOI) was 1.7, with the highest MOI observed in the 5-15 years age group. ubp1 sequence analysis identified one nonsynonymous E1528D polymorphism at a low frequency (1.6%). CONCLUSION: The study demonstrated sustained efficacy of AL for treating uncomplicated P. falciparum malaria. Genetic diversity analysis revealed various allelic types, suggesting occurrences of polyclonal infections. Nonetheless, the detection of a significant ubp1 polymorphism could have future implications for the epidemiology of anti-malarial drug resistance in the population.


Asunto(s)
Antimaláricos , Combinación Arteméter y Lumefantrina , Resistencia a Medicamentos , Malaria Falciparum , Plasmodium falciparum , Combinación Arteméter y Lumefantrina/uso terapéutico , Nigeria , Humanos , Plasmodium falciparum/genética , Plasmodium falciparum/efectos de los fármacos , Antimaláricos/uso terapéutico , Antimaláricos/farmacología , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/parasitología , Femenino , Masculino , Niño , Preescolar , Adolescente , Adulto , Adulto Joven , Resistencia a Medicamentos/genética , Persona de Mediana Edad , Lactante , Resultado del Tratamiento , Artemisininas/uso terapéutico , Artemisininas/farmacología , Variación Genética , Anciano , Proteínas Protozoarias/genética , Combinación de Medicamentos , Proteína 1 de Superficie de Merozoito/genética , Etanolaminas/uso terapéutico , Fluorenos/uso terapéutico
2.
Parasitol Res ; 123(8): 303, 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39160298

RESUMEN

This study investigates the efficacy of nebivolol (NBV) in experimental models of toxoplasmosis, focusing on parasite burden reduction and neuronal protection. In the acute model of experimental toxoplasmosis, Swiss mice infected with RH strain tachyzoites received oral NBV chlorhydrate doses of 2 mg/kg/day and 4 mg/kg/day for 8 days. Treatment with NBV significantly reduced parasite burden compared to vehicle and standard drug (PYR) groups. In the chronic model of experimental toxoplasmosis, C57/BL6 mice infected with the ME49 strain received NBV chlorhydrate 41 days post-infection and were evaluated after 10 days of treatment. NBV chlorhydrate effectively reduced cyst number and area, as well as bradyzoite burden compared to controls. Histological analysis demonstrated that NBV chlorhydrate preserved neuronal count, with the 4 mg/kg/day dose yielding counts similar to non-infected mice. Statistical analysis confirmed significant differences compared to control groups. Furthermore, immunohistochemical analysis revealed a significant reduction in iNOS labeling in the brains of mice treated with NBV chlorhydrate, indicating a decrease in nitric oxide production compared to control groups. These findings suggest NBV's potential as a promising candidate for toxoplasmosis treatment, highlighting its ability to reduce parasite burden and protect neuronal integrity. Further research is warranted to elucidate NBV's mechanisms of action and its clinical application in managing toxoplasmosis.


Asunto(s)
Encéfalo , Modelos Animales de Enfermedad , Ratones Endogámicos C57BL , Nebivolol , Carga de Parásitos , Toxoplasmosis Animal , Animales , Nebivolol/farmacología , Nebivolol/uso terapéutico , Ratones , Toxoplasmosis Animal/tratamiento farmacológico , Toxoplasmosis Animal/parasitología , Encéfalo/parasitología , Encéfalo/patología , Encéfalo/efectos de los fármacos , Femenino , Neuronas/efectos de los fármacos , Neuronas/parasitología , Etanolaminas/farmacología , Etanolaminas/uso terapéutico , Antiprotozoarios/farmacología , Antiprotozoarios/uso terapéutico , Antiprotozoarios/administración & dosificación , Benzopiranos/farmacología , Benzopiranos/uso terapéutico , Resultado del Tratamiento , Óxido Nítrico/metabolismo , Toxoplasma/efectos de los fármacos , Óxido Nítrico Sintasa de Tipo II/metabolismo
4.
Arch Ital Urol Androl ; 96(2): 12582, 2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38934521

RESUMEN

OBJECTIVE: The management of chronic prostatitis/ chronic pelvic pain syndrome type III (CP/CPPS) has been always considered complex due to several biopsychological factors underlying the disease. In this clinical study, we aimed to evaluate the efficacy of the treatment with Palmitoylethanolamide, Epilobium and Calendula extract in patients with CP/CPPS III. MATERIALS AND METHODS: From June 2023 to July 2023, we enrolled 45 consecutive patients affected by CP/CPPS type III in three different institution. We included patients aged between 18 and 75 years with symptoms of pelvic pain for 3 months or more before the study, a total National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI) score ≥ 12 point and diagnosed with NIH category III, according to 4-glass test Meares-Stamey test. Patients were then allocated to receive rectal suppositories of PEA, Epilobium and Calendula, 1 suppository/ die for 1 month. All patients have been tested with standard urinalysis in order to assess urinary leukocytes (U-WBC). The primary endpoint of the study was the reduction of NIHCPSI. The secondary outcomes were the change of peak flow, post-void residual (PVR), IIEF-5, VAS score, PSA and decrease of U-WBC. RESULTS: A total of 45 patients concluded the study protocol. At baseline, the median age of all the patients included in the cohort was 49 years, the median PSA was 2.81 ng/ml, the median NIH-CPSI was 18.55, the median IIEF-5 was 18.27, the median U-WBC was 485.3/mmc, the median VAS score was 6.49, the median PVR was 26.5 ml and the median peak flow was 16.3 ml/s. After 1 month of therapy we observed a statistically significant improvement of NIH-CPSI, U-WBC, PSA, IIEF-5, peak flow, PVR and VAS. CONCLUSIONS: In this observational study, we showed the clinical efficacy of the treatment with PEA, Epilobium and Calendula, 1 suppository/die for 1 month, in patients with CP/CPPS III. The benefits of this treatment could be related to the reduction of inflammatory cells in the urine that could imply a reduction of inflammatory cytokines. These results should be confirmed in further studies with greater sample size.


Asunto(s)
Amidas , Calendula , Epilobium , Etanolaminas , Ácidos Palmíticos , Extractos Vegetales , Prostatitis , Humanos , Masculino , Persona de Mediana Edad , Adulto , Prostatitis/tratamiento farmacológico , Supositorios , Amidas/administración & dosificación , Amidas/uso terapéutico , Anciano , Ácidos Palmíticos/administración & dosificación , Ácidos Palmíticos/uso terapéutico , Resultado del Tratamiento , Adulto Joven , Etanolaminas/administración & dosificación , Etanolaminas/uso terapéutico , Extractos Vegetales/administración & dosificación , Extractos Vegetales/uso terapéutico , Adolescente , Enfermedad Crónica , Dolor Pélvico/tratamiento farmacológico , Dolor Pélvico/etiología
5.
Malar J ; 23(1): 184, 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38867217

RESUMEN

BACKGROUND: Malaria remains a major global health problem although there was a remarkable achievement between 2000 and 2015. Malaria drug resistance, along with several other factors, presents a significant challenge to malaria control and elimination efforts. Numerous countries in sub-Saharan Africa have documented the presence of confirmed or potential markers of partial resistance against artemisinin, the drug of choice for the treatment of uncomplicated Plasmodium falciparum malaria. The World Health Organization (WHO) recommends regular surveillance of artemisinin therapeutic efficacy to inform policy decisions. METHODS: This study aimed to evaluate the therapeutic efficacy of artemether-lumefantrine (AL), which is the first-line treatment for uncomplicated P. falciparum malaria in Ethiopia since 2004. Using a single-arm prospective evaluation design, the study assessed the clinical and parasitological responses of patients with uncomplicated P. falciparum malaria in Metehara Health Centre, central-east Ethiopia. Out of 2332 malaria suspects (1187 males, 1145 females) screened, 80 (50 males, 30 females) were enrolled, followed up for 28 days, and 73 (44 males, 29 females) completed the follow up. The study was conducted and data was analysed by employing the per-protocol and Kaplan-Meier analyses following the WHO Malaria Therapeutic Efficacy Evaluation Guidelines 2009. RESULTS: The results indicated rapid parasite clearance and resolution of clinical symptoms, with all patients achieving complete recovery from asexual parasitaemia and fever by day (D) 3. The prevalence of gametocytes decreased from 6.3% on D0 to 2.5% on D2, D3, D7, and ultimately achieving complete clearance afterward. CONCLUSION: The overall cure rate for AL treatment was 100%, demonstrating its high efficacy in effectively eliminating malaria parasites in patients. No serious adverse events related to AL treatment were reported during the study, suggesting its safety and tolerability among the participants. These findings confirm that AL remains a highly efficacious treatment for uncomplicated P. falciparum malaria in the study site after 20 years of its introduction in Ethiopia.


Asunto(s)
Antimaláricos , Combinación Arteméter y Lumefantrina , Malaria Falciparum , Humanos , Etiopía , Malaria Falciparum/tratamiento farmacológico , Combinación Arteméter y Lumefantrina/uso terapéutico , Masculino , Femenino , Antimaláricos/uso terapéutico , Antimaláricos/efectos adversos , Adulto , Adolescente , Adulto Joven , Preescolar , Niño , Estudios Prospectivos , Persona de Mediana Edad , Lactante , Artemisininas/uso terapéutico , Artemisininas/efectos adversos , Fluorenos/uso terapéutico , Fluorenos/efectos adversos , Resultado del Tratamiento , Etanolaminas/uso terapéutico , Etanolaminas/efectos adversos , Anciano , Combinación de Medicamentos , Plasmodium falciparum/efectos de los fármacos
7.
Lancet Microbe ; 5(7): 633-644, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38705163

RESUMEN

BACKGROUND: Artemether-lumefantrine is widely used for uncomplicated Plasmodium falciparum malaria; sulfadoxine-pyrimethamine plus amodiaquine is used for seasonal malaria chemoprevention. We aimed to determine the efficacy of artemether-lumefantrine with and without primaquine and sulfadoxine-pyrimethamine plus amodiaquine with and without tafenoquine for reducing gametocyte carriage and transmission to mosquitoes. METHODS: In this phase 2, single-blind, randomised clinical trial conducted in Ouelessebougou, Mali, asymptomatic individuals aged 10-50 years with P falciparum gametocytaemia were recruited from the community and randomly assigned (1:1:1:1) to receive either artemether-lumefantrine, artemether-lumefantrine with a single dose of 0·25 mg/kg primaquine, sulfadoxine-pyrimethamine plus amodiaquine, or sulfadoxine-pyrimethamine plus amodiaquine with a single dose of 1·66 mg/kg tafenoquine. All trial staff other than the pharmacist were masked to group allocation. Participants were not masked to group allocation. Randomisation was done with a computer-generated randomisation list and concealed with sealed, opaque envelopes. The primary outcome was the median within-person percent change in mosquito infection rate in infectious individuals from baseline to day 2 (artemether-lumefantrine groups) or day 7 (sulfadoxine-pyrimethamine plus amodiaquine groups) after treatment, assessed by direct membrane feeding assay. All participants who received any trial drug were included in the safety analysis. This study is registered with ClinicalTrials.gov, NCT05081089. FINDINGS: Between Oct 13 and Dec 16, 2021, 1290 individuals were screened and 80 were enrolled and randomly assigned to one of the four treatment groups (20 per group). The median age of participants was 13 (IQR 11-20); 37 (46%) of 80 participants were female and 43 (54%) were male. In individuals who were infectious before treatment, the median percentage reduction in mosquito infection rate 2 days after treatment was 100·0% (IQR 100·0-100·0; n=19; p=0·0011) with artemether-lumefantrine and 100·0% (100·0-100·0; n=19; p=0·0001) with artemether-lumefantrine with primaquine. Only two individuals who were infectious at baseline infected mosquitoes on day 2 after artemether-lumefantrine and none at day 5. By contrast, the median percentage reduction in mosquito infection rate 7 days after treatment was 63·6% (IQR 0·0-100·0; n=20; p=0·013) with sulfadoxine-pyrimethamine plus amodiaquine and 100% (100·0-100·0; n=19; p<0·0001) with sulfadoxine-pyrimethamine plus amodiaquine with tafenoquine. No grade 3-4 or serious adverse events occurred. INTERPRETATION: These data support the effectiveness of artemether-lumefantrine alone for preventing nearly all mosquito infections. By contrast, there was considerable post-treatment transmission after sulfadoxine-pyrimethamine plus amodiaquine; therefore, the addition of a transmission-blocking drug might be beneficial in maximising its community impact. FUNDING: Bill & Melinda Gates Foundation.


Asunto(s)
Amodiaquina , Antimaláricos , Combinación Arteméter y Lumefantrina , Combinación de Medicamentos , Fluorenos , Malaria Falciparum , Plasmodium falciparum , Primaquina , Pirimetamina , Sulfadoxina , Humanos , Antimaláricos/uso terapéutico , Antimaláricos/administración & dosificación , Pirimetamina/uso terapéutico , Pirimetamina/administración & dosificación , Amodiaquina/uso terapéutico , Amodiaquina/administración & dosificación , Sulfadoxina/uso terapéutico , Sulfadoxina/administración & dosificación , Masculino , Adulto , Femenino , Adolescente , Niño , Malaria Falciparum/transmisión , Malaria Falciparum/prevención & control , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/epidemiología , Método Simple Ciego , Persona de Mediana Edad , Primaquina/uso terapéutico , Primaquina/administración & dosificación , Combinación Arteméter y Lumefantrina/uso terapéutico , Combinación Arteméter y Lumefantrina/administración & dosificación , Adulto Joven , Fluorenos/administración & dosificación , Fluorenos/uso terapéutico , Malí/epidemiología , Plasmodium falciparum/efectos de los fármacos , Artemisininas/administración & dosificación , Artemisininas/uso terapéutico , Aminoquinolinas/administración & dosificación , Aminoquinolinas/uso terapéutico , Aminoquinolinas/efectos adversos , Etanolaminas/administración & dosificación , Etanolaminas/uso terapéutico , Animales , Quimioterapia Combinada
8.
Antimicrob Agents Chemother ; 68(5): e0009324, 2024 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-38597636

RESUMEN

Capillary samples offer practical benefits compared with venous samples for the measurement of drug concentrations, but the relationship between the two measures varies between different drugs. We measured the concentrations of lumefantrine, mefloquine, piperaquine in 270 pairs of venous plasma and concurrent capillary plasma samples collected from 270 pregnant women with uncomplicated falciparum or vivax malaria. The median and range of venous plasma concentrations included in this study were 447.5 ng/mL (8.81-3,370) for lumefantrine (day 7, n = 76, median total dose received 96.0 mg/kg), 17.9 ng/mL (1.72-181) for desbutyl-lumefantrine, 1,885 ng/mL (762-4,830) for mefloquine (days 3-21, n = 90, median total dose 24.9 mg/kg), 641 ng/mL (79.9-1,950) for carboxy-mefloquine, and 51.8 ng/mL (3.57-851) for piperaquine (days 3-21, n = 89, median total dose 52.2 mg/kg). Although venous and capillary plasma concentrations showed a high correlation (Pearson's correlation coefficient: 0.90-0.99) for all antimalarials and their primary metabolites, they were not directly interchangeable. Using the concurrent capillary plasma concentrations and other variables, the proportions of venous plasma samples predicted within a ±10% precision range was 34% (26/76) for lumefantrine, 36% (32/89) for desbutyl-lumefantrine, 74% (67/90) for mefloquine, 82% (74/90) for carboxy-mefloquine, and 24% (21/89) for piperaquine. Venous plasma concentrations of mefloquine, but not lumefantrine and piperaquine, could be predicted by capillary plasma samples with an acceptable level of agreement. Capillary plasma samples can be utilized for pharmacokinetic and clinical studies, but caution surrounding cut-off values is required at the individual level.CLINICAL TRIALSThis study is registered with ClinicalTrials.gov as NCT01054248.


Asunto(s)
Antimaláricos , Lumefantrina , Malaria Falciparum , Malaria Vivax , Mefloquina , Piperazinas , Quinolinas , Humanos , Femenino , Mefloquina/sangre , Mefloquina/uso terapéutico , Mefloquina/farmacocinética , Antimaláricos/sangre , Antimaláricos/uso terapéutico , Antimaláricos/farmacocinética , Embarazo , Quinolinas/sangre , Quinolinas/farmacocinética , Quinolinas/uso terapéutico , Lumefantrina/uso terapéutico , Lumefantrina/sangre , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/sangre , Adulto , Malaria Vivax/tratamiento farmacológico , Malaria Vivax/sangre , Adulto Joven , Etanolaminas/sangre , Etanolaminas/farmacocinética , Etanolaminas/uso terapéutico , Fluorenos/sangre , Fluorenos/uso terapéutico , Fluorenos/farmacocinética , Adolescente
9.
Pharmacol Ther ; 258: 108649, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38615798

RESUMEN

Current epidemiological data estimate that one in five people suffers from chronic pain with considerable impairment of health-related quality of life. The pharmacological treatment is based on first- and second-line analgesic drugs, including COX-2 selective and nonselective nonsteroidal anti-inflammatory drugs, paracetamol, antidepressants, anti-seizure drugs and opioids, that are characterized by important side effects. N-palmitoylethanolamine (PEA) is a body's own fatty-acid ethanolamide belonging to the family of autacoid local injury antagonist amides. The anti-inflammatory and pain-relieving properties of PEA have been recognized for decades and prompted to depict its role in the endogenous mechanisms of pain control. Together with its relative abundance in food sources, this opened the way to the use of PEA as a pain-relieving nutritional intervention. Naïve PEA is a large particle size lipid molecule with low solubility and bioavailability. Reducing particle size is a useful method to increase surface area, thereby improving dissolution rate and bioavailability accordingly. Micron-size formulations of PEA (e.g., ultramicronized and co-(ultra)micronized) have shown higher oral efficacy compared to naïve PEA. In particular, ultramicronized PEA has been shown to efficiently cross the intestinal wall and, more importantly, the blood-brain and blood-spinal cord barrier. Several preclinical and clinical studies have shown the efficacy, safety and tolerability of ultramicronized PEA. This narrative review summarizes the available pharmacokinetic/pharmacodynamic data on ultramicronized PEA and focuses to its contribution to pain control, in particular as 'add-on' nutritional intervention. Data showing the ability of ultramicronized PEA to limit opioid side effects, including the development of tolerance, have also been reviewed.


Asunto(s)
Analgésicos , Dolor Crónico , Etanolaminas , Ácidos Palmíticos , Etanolaminas/efectos adversos , Etanolaminas/uso terapéutico , Ácidos Palmíticos/uso terapéutico , Ácidos Palmíticos/farmacología , Ácidos Palmíticos/efectos adversos , Humanos , Analgésicos/efectos adversos , Analgésicos/farmacología , Dolor Crónico/tratamiento farmacológico , Animales , Amidas , Tamaño de la Partícula , Disponibilidad Biológica
10.
Malar J ; 23(1): 125, 2024 Apr 29.
Artículo en Inglés | MEDLINE | ID: mdl-38685044

RESUMEN

BACKGROUND: Despite efforts made to reduce morbidity and mortality associated with malaria, especially in sub-Saharan Africa, malaria continues to be a public health concern that requires innovative efforts to reach the WHO-set zero malaria agenda. Among the innovations is the use of artemisinin-based combination therapy (ACT) that is effective against Plasmodium falciparum. Generic artemether-lumefantrine (AL) is used to treat uncomplicated malaria after appropriate diagnosis. AL is metabolized by the cytochrome P450 family of enzymes, such as CYP2B6, CYP3A4 and CYP3A5, which can be under pharmacogenetic influence. Pharmacogenetics affecting AL metabolism, significantly influence the overall anti-malarial activity leading to variable therapeutic efficacy. This study focused on generic AL drugs used in malarial treatment as prescribed at health facilities and evaluated pharmacogenomic influences on their efficacy. METHODS: Patients who have been diagnosed with malaria and confirmed through RDT and microscopy were recruited in this study. Blood samples were taken on days 1, 2, 3 and 7 for parasite count and blood levels of lumefantrine, artemisinin, desbutyl-lumefantrine (DBL), and dihydroartemisinin (DHA), the active metabolites of lumefantrine and artemether, respectively, were analysed using established methods. Pharmacogene variation analysis was undertaken using iPLEX microarray and PCR-RFLP. RESULTS: A total of 52 patients completed the study. Median parasite density from day 1 to 7 ranged from 0-2666/µL of blood, with days 3 and 7 recording 0 parasite density. Highest median plasma concentration for lumefantrine and desbutyl lumefantrine, which are the long-acting components of artemisinin-based combinations, was 4123.75 ng/mL and 35.87 ng/mL, respectively. Day 7 plasma lumefantrine concentration across all generic ACT brands was ≥ 200 ng/mL which potentially accounted for the parasitaemia profile observed. Monomorphism was observed for CYP3A4 variants, while there were observed variations in CYP2B6 and CYP3A5 alleles. Among the CYP3A5 genotypes, significant differences in genotypes and plasma concentration for DBL were seen on day 3 between 1/*1 versus *1/*6 (p = 0.002), *1/*3 versus *1/*6 (p = 0.006) and *1/*7 versus *1/*6 (p = 0.008). Day 7 plasma DBL concentrations showed a significant difference between *1/*6 and *1/*3 (p = 0.026) expressors. CONCLUSIONS: The study findings show that CYP2B6 and CYP3A5 pharmacogenetic variations may lead to higher plasma exposure of AL metabolites.


Asunto(s)
Antimaláricos , Combinación Arteméter y Lumefantrina , Artemisininas , Combinación de Medicamentos , Etanolaminas , Fluorenos , Humanos , Antimaláricos/uso terapéutico , Antimaláricos/farmacocinética , Combinación Arteméter y Lumefantrina/uso terapéutico , Femenino , Etanolaminas/uso terapéutico , Etanolaminas/farmacocinética , Adolescente , Fluorenos/uso terapéutico , Fluorenos/farmacocinética , Fluorenos/farmacología , Artemisininas/uso terapéutico , Artemisininas/farmacocinética , Masculino , Ghana , Adulto , Adulto Joven , Niño , Preescolar , Persona de Mediana Edad , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/parasitología , Medicamentos Genéricos/uso terapéutico , Resultado del Tratamiento , Farmacogenética , Anciano , Lactante
11.
J Allergy Clin Immunol Pract ; 12(6): 1539-1546.e5, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38518866

RESUMEN

BACKGROUND: Sixty-five percent of people with severe asthma and a fractional exhaled nitric oxide (Feno) greater than or equal to 45 parts per billion (ppb) are nonadherent to inhaled corticosteroids (ICSs). Digital devices recording both time of use and inhaler technique identify nonadherence and ICS responsiveness but are not widely available. As the NEXThaler dose counter activates only at an inspiratory flow rate of 35 L/min, this may provide an alternative to identifying ICS responsiveness. OBJECTIVE: To assess ICS adherence and responsiveness in severe asthma using beclometasone/formoterol (200/6 µg) NEXThaler (BFN) dose-counting. METHODS: Patients with severe asthma with a Feno greater than or equal to 45 ppb were invited to use BFN in place of their usual ICS/long-acting ß2-agonist. Feno, 6-item Asthma Control Questionnaire score, lung function, and blood eosinophil count were monitored for 3 months. A log10ΔFeno of greater than or equal to 0.24 was used to define Feno suppression as the primary marker of ICS responsiveness at day 28. RESULTS: Twenty-seven of 48 (56%) patients demonstrated significant Feno suppression at month 1 (median pre-114, post-48 ppb, P < .001). A small but significant reduction occurred in Feno nonsuppressors. The 6-item Asthma Control Questionnaire score fell a median 1.2 units in Feno suppressors (P < .001) and 0.5 units in nonsuppressors (P = .025). These effects were sustained until month 3 in Feno suppressors, with a significant improvement in FEV1 and blood eosinophils. Sixty-seven percent (18 of 27) of those with baseline ICS/long-acting ß2-agonist prescription refills of 80% or more were Feno suppressors, suggesting prior nonadherence despite adequate prescription collection. Seventy-nine percent of Feno suppressors did not require biologics within mean 11.4 months from initial dose counting. CONCLUSIONS: BFN dose-counting identifies ICS responsiveness in severe asthma with the implication that these patients may not need to progress to biological therapies.


Asunto(s)
Antiasmáticos , Asma , Beclometasona , Fumarato de Formoterol , Óxido Nítrico , Humanos , Asma/tratamiento farmacológico , Masculino , Fumarato de Formoterol/administración & dosificación , Fumarato de Formoterol/uso terapéutico , Femenino , Beclometasona/administración & dosificación , Beclometasona/uso terapéutico , Persona de Mediana Edad , Óxido Nítrico/metabolismo , Óxido Nítrico/análisis , Adulto , Administración por Inhalación , Antiasmáticos/uso terapéutico , Antiasmáticos/administración & dosificación , Cumplimiento de la Medicación , Etanolaminas/uso terapéutico , Etanolaminas/administración & dosificación , Corticoesteroides/uso terapéutico , Corticoesteroides/administración & dosificación , Anciano , Combinación de Medicamentos , Resultado del Tratamiento , Eosinófilos/inmunología , Pruebas de Función Respiratoria
12.
Eur Arch Otorhinolaryngol ; 281(7): 3671-3678, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38492007

RESUMEN

PURPOSE: Although COVID-19 anosmia is often transient, patients with persistent olfactory dysfunction (pOD) can experience refractory parosmia and diminished smell. This study evaluated four putative therapies for parosmia in patients with chronic COVID-19 olfactory impairment. METHODS: After screening nasal endoscopy, 85 patients (49 female, 58%) with pOD and treatment-refractory parosmia were randomized to: (1) ultramicronized palmitoylethanolamide and luteolin + olfactory training (OT) (umPEALUT group, n = 17), (2) alpha-lipoic acid + OT (ALA group, n = 21), (3) umPEALUT + ALA + OT (combination group, n = 28), or 4) olfactory training (OT) alone (control group, n = 23). Olfactory function was assessed at baseline (T0) and 6 months (T1) using a parosmia questionnaire and Sniffin' Sticks test of odor threshold, detection, and identification (TDI). Analyses included one-way ANOVA for numeric data and Chi-Square analyses for nominal data on parosmia. RESULTS: The umPEALUT group had the largest improvement in TDI scores (21.8 ± 9.4 to 29.7 ± 7.5) followed by the combination group (19.6 ± 6.29 to 27.5 ± 2.7), both p < 0.01. The control and ALA groups had no significant change. Patients in the combination and umPEALUT groups had significantly improved TDI scores compared to ALA and control groups (p < 0.001). Rates of parosmia resolution after 6 months were reported at 96% for combination, 65% for control, 53% for umPEALUT and 29% for ALA (p < 0.001). All treatment regimens were well-tolerated. CONCLUSIONS: umPEALUT and OT, with or without ALA, was associated with improvement in TDI scores and parosmia, whereas OT alone or OT with ALA were associated with little benefit.


Asunto(s)
COVID-19 , Trastornos del Olfato , Ácido Tióctico , Humanos , Femenino , COVID-19/complicaciones , Masculino , Persona de Mediana Edad , Trastornos del Olfato/etiología , Trastornos del Olfato/terapia , Trastornos del Olfato/rehabilitación , Ácido Tióctico/uso terapéutico , Ácido Tióctico/administración & dosificación , Etanolaminas/uso terapéutico , Ácidos Palmíticos/uso terapéutico , Ácidos Palmíticos/administración & dosificación , Amidas/uso terapéutico , Adulto , SARS-CoV-2 , Resultado del Tratamiento , Anciano , Anosmia/etiología , Anosmia/terapia , Olfato/fisiología , Terapia Combinada , Entrenamiento Olfativo
13.
Int J Parasitol Drugs Drug Resist ; 24: 100532, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38520842

RESUMEN

Artemether-lumefantrine (AL) is the most widely used antimalarial drug for treating uncomplicated falciparum malaria. This study evaluated whether the K65Q mutation in the Plasmodium falciparum cysteine desulfurase IscS (Pfnfs1) gene was associated with alternated susceptibility to lumefantrine using clinical parasite samples from Ghana and the China-Myanmar border area. Parasite isolates from the China-Myanmar border had significantly higher IC50 values to lumefantrine than parasites from Ghana. In addition, the K65 allele was significantly more prevalent in the Ghanaian parasites (34.5%) than in the China-Myanmar border samples (6.8%). However, no difference was observed in the lumefantrine IC50 value between the Pfnfs1 reference K65 allele and the non reference 65Q allele in parasites from the two regions. These data suggest that the Pfnfs1 K65Q mutation may not be a reliable marker for reduced susceptibility to lumefantrine.


Asunto(s)
Antimaláricos , Artemisininas , Malaria Falciparum , Humanos , Lumefantrina/farmacología , Antimaláricos/farmacología , Antimaláricos/uso terapéutico , Plasmodium falciparum , Combinación Arteméter y Lumefantrina/uso terapéutico , Ghana , Artemisininas/farmacología , Artemisininas/uso terapéutico , Arteméter/uso terapéutico , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/parasitología , Mutación , Etanolaminas/farmacología , Etanolaminas/uso terapéutico , Resistencia a Medicamentos/genética
15.
Malar J ; 23(1): 40, 2024 Feb 05.
Artículo en Inglés | MEDLINE | ID: mdl-38317164

RESUMEN

BACKGROUND: Artemisinin-based combination therapy (ACT) has been effective in the supervised treatment of uncomplicated malaria in Ghana. Since ACT usage is primarily unsupervised, this study aimed to determine the effectiveness of artemether-lumefantrine (AL) for treating malaria patients in two transmission settings in Ghana. METHODS: Eighty-four individuals with uncomplicated Plasmodium falciparum malaria were recruited from Lekma Hospital (LH) in Accra (low-transmission area; N = 28), southern Ghana, and King's Medical Centre (KMC) in Kumbungu (high-transmission area; N = 56), northern Ghana. Participants were followed up for 28 days after unsupervised treatment with AL. The presence of asexual parasites was determined by microscopic examination of Giemsa-stained blood smears. Plasmodium species identification was confirmed using species-specific primers targeting the 18S rRNA gene. Parasite recrudescence or reinfection was determined by genotyping the Pfmsp 1 and Pfmsp 2 genes. RESULTS: After AL treatment, 3.6% (2/56) of the patients from KMC were parasitaemic on day 3 compared to none from the LH patients. One patient from KMC with delayed parasite clearance on day 3 remained parasite-positive by microscopy on day 7 but was parasite-free by day 14. While none of the patients from LH experienced parasite recurrence during the 28-day follow-up, three and two patients from KMC had recurrent parasitaemia on days 21 and 28, respectively. Percentage reduction in parasite densities from day 1, 2, and 3 for participants from the KMC was 63.2%, 89.5%, and 84.5%. Parasite densities for participants from the LH reduced from 98.2%, 99.8% on day 1, and 2 to 100% on day 3. The 28-day cumulative incidence rate of treatment failure for KMC was 12.8% (95% confidence interval: 1.9-23.7%), while the per-protocol effectiveness of AL in KMC was 89.47%. All recurrent cases were assigned to recrudescence after parasite genotyping by Pfmsp 1 and Pfmsp 2. CONCLUSION: While AL is efficacious in treating uncomplicated malaria in Ghana, when taken under unsupervised conditions, it showed an 89.4% PCR-corrected cure rate in northern Ghana, which is slightly below the WHO-defined threshold.


Asunto(s)
Antimaláricos , Artemisininas , Malaria Falciparum , Humanos , Combinación Arteméter y Lumefantrina/uso terapéutico , Antimaláricos/uso terapéutico , Ghana , Artemisininas/uso terapéutico , Combinación de Medicamentos , Arteméter/uso terapéutico , Malaria Falciparum/tratamiento farmacológico , Recurrencia , Parasitemia/tratamiento farmacológico , Etanolaminas/uso terapéutico , Fluorenos/uso terapéutico , Plasmodium falciparum/genética
16.
Malar J ; 23(1): 61, 2024 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-38418982

RESUMEN

BACKGROUND: Children are particularly at risk of malaria. This analysis consolidates the clinical data for pyronaridine-artesunate (PA) paediatric granules in children from three randomized clinical trials and a real-world study (CANTAM). METHODS: An integrated safety analysis of individual patient data from three randomized clinical trials included patients with microscopically-confirmed Plasmodium falciparum, body weight ≥ 5 kg to < 20 kg, who received at least one dose of study drug (paediatric safety population). PA was administered once daily for 3 days; two trials included the comparator artemether-lumefantrine (AL). PCR-adjusted day 28 adequate clinical and parasitological response (ACPR) was evaluated. Real-world PA granules safety and effectiveness was also considered. RESULTS: In the integrated safety analysis, 63.9% (95% CI 60.2, 67.4; 426/667) of patients had adverse events following PA and 62.0% (95% CI 56.9, 66.9; 222/358) with AL. Vomiting was more common with PA (7.8% [95% CI 6.0, 10.1; 52/667]) than AL (3.4% [95% CI 1.9, 5.8; 12/358]), relative risk 2.3 (95% CI 1.3, 4.3; P = 0.004), occurring mainly following the first PA dose (6.7%, 45/667), without affecting re-dosing or adherence. Prolonged QT interval occurred less frequently with PA (3.1% [95% CI 2.1, 4.8; 21/667]) than AL (8.1% [95% CI 5.7, 11.4; 29/358]), relative risk 0.39 (95% CI 0.22, 0.67; P = 0.0007). In CANTAM, adverse events were reported for 17.7% (95% CI 16.3, 19.2; 460/2599) of patients, most commonly vomiting (5.4% [95% CI 4.6, 6.4; 141/2599]), mainly following the first dose, (4.5% [117/2599]), with all patients successfully re-dosed, and pyrexia (5.4% [95% CI 4.6, 6.3; 140/2599]). In the two comparative clinical trials, Day 28 ACPR in the per-protocol population for PA was 97.1% (95% CI 94.6, 98.6; 329/339) and 100% (95% CI 99.3, 100; 514/514) versus 98.8% (95% CI 95.7, 99.9; 165/167) and 98.4% (95% CI 95.5, 99.7; 188/191) for AL, respectively. In CANTAM, PA clinical effectiveness was 98.0% (95% CI 97.3, 98.5; 2273/2320). CONCLUSIONS: Anti-malarial treatment with PA paediatric granules administered once daily for 3 days was well tolerated in children and displayed good clinical efficacy in clinical trials, with effectiveness confirmed in a real-world study. Trial registration Clinicaltrials.gov: SP-C-003-05: identifier NCT00331136; SP-C-007-07: identifier NCT0541385; SP-C-021-15: identifier NCT03201770. Pan African Clinical Trials Registry: SP-C-013-11: identifier PACTR201105000286876.


Asunto(s)
Antimaláricos , Artemisininas , Artesunato , Malaria Falciparum , Malaria , Naftiridinas , Niño , Humanos , Antimaláricos/efectos adversos , Combinación Arteméter y Lumefantrina/uso terapéutico , Artemisininas/efectos adversos , Malaria Falciparum/tratamiento farmacológico , Arteméter/uso terapéutico , Ensayos Clínicos Controlados Aleatorios como Asunto , Malaria/tratamiento farmacológico , Combinación de Medicamentos , Resultado del Tratamiento , Vómitos/inducido químicamente , Vómitos/tratamiento farmacológico , Etanolaminas/uso terapéutico
18.
J Allergy Clin Immunol Pract ; 12(4): 889-893, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38346474

RESUMEN

Overuse of reliever as short-acting beta-agonist and associated underuse of controller as inhaled corticosteroid (ICS) administered via separate inhalers results in worse asthma outcomes. Such discordance can be obviated by combining both controller and reliever in the same inhaler. So-called anti-inflammatory reliever (AIR) therapy comprises the use of a single inhaler containing an ICS such as budesonide (BUD) in conjunction with a reliever as either albuterol (ALB) or formoterol (FORM), to be used on demand, with variable dosing driven by asthma symptoms in a flexible patient-centered regimen. Global guidelines now support the use of BUD-ALB as AIR therapy to reduce exacerbations, either on its own in mild asthma or in conjunction with fixed-dose maintenance ICS-long-acting beta-agonist in moderate to severe asthma. Using BUD-FORM on its own allows patients to seamlessly move in an intuitive flexible fashion between AIR and maintenance and reliever therapy, by stepping up and down the dosing escalator across a spectrum of asthma severities. Head-to-head clinical studies are indicated to compare BUD-FORM versus BUD-ALB as AIR in mild asthma, and also BUD-FORM as maintenance and reliever therapy versus BUD-ALB as AIR plus maintenance ICS-long-acting beta-agonist in moderate to severe asthma. Patients should be encouraged to make an informed decision in conjunction with their health care professional regarding the best therapeutic option tailored to their individual needs, which in turn is likely to result in long-term compliance and associated optimal asthma control.


Asunto(s)
Antiasmáticos , Asma , Humanos , Budesonida/uso terapéutico , Albuterol/uso terapéutico , Broncodilatadores/uso terapéutico , Antiasmáticos/uso terapéutico , Etanolaminas/uso terapéutico , Combinación de Medicamentos , Asma/tratamiento farmacológico , Combinación Budesonida y Fumarato de Formoterol/uso terapéutico , Fumarato de Formoterol/uso terapéutico , Corticoesteroides/uso terapéutico , Antiinflamatorios/uso terapéutico , Administración por Inhalación
19.
J Allergy Clin Immunol Pract ; 12(4): 870-879, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38237858

RESUMEN

The Global Initiative for Asthma (GINA) recommends that short-acting ß2-agonist (SABA) monotherapy should no longer be prescribed, and that as-needed combination inhaled corticosteroids (ICS)-formoterol is the preferred reliever therapy in adults and adolescents with mild asthma. These recommendations are based on the risks of SABA monotherapy, the evidence that ICS-formoterol reliever therapy markedly decreases the occurrence of severe asthma exacerbations compared with SABA reliever therapy alone, and because ICS-formoterol reliever therapy has a favorable risk/benefit profile compared with maintenance ICS plus SABA reliever therapy. Data supporting the use of combination ICS-albuterol reliever therapy in mild asthma are more limited, but there are studies that inform its use in this population. In this review, we compare, using a pros and cons format, the (1) long-term safety and efficacy of ICS-formoterol reliever therapy versus SABA reliever therapy alone, (2) long-term safety and efficacy of ICS-albuterol reliever therapy versus SABA reliever therapy alone, (3) immediate bronchodilator effects of ICS-formoterol versus SABA alone, and (4) clinical and regulatory factors that may inform reliever therapy prescription decisions. By presenting the evidence of these reliever inhaler options, we hope to inform the reader while also calling for necessary future effectiveness and implementation research.


Asunto(s)
Antiasmáticos , Asma , Adulto , Adolescente , Humanos , Antiasmáticos/uso terapéutico , Asma/tratamiento farmacológico , Asma/epidemiología , Broncodilatadores/uso terapéutico , Corticoesteroides/uso terapéutico , Fumarato de Formoterol/uso terapéutico , Albuterol/uso terapéutico , Administración por Inhalación , Budesonida/uso terapéutico , Etanolaminas/uso terapéutico
20.
Ann Allergy Asthma Immunol ; 132(2): 229-239.e3, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37879568

RESUMEN

BACKGROUND: The management of mild asthma has lacked an over-the-counter (OTC) option aside from inhaled epinephrine, which is available in the United States. However, inhaled epinephrine use without an inhaled corticosteroid may increase the risk of asthma death. OBJECTIVE: To compare the cost-effectiveness of OTC as-needed budesonide-formoterol as a plausible alternative to inhaled epinephrine. METHODS: We developed a probabilistic Markov model to compare OTC as-needed budesonide-formoterol inhaler use vs inhaled epinephrine use in adults with mild asthma from a US societal perspective over a lifetime horizon, with a 3% annual discount rate (2022 US dollars). Inputs were derived from the SYmbicort Given as-needed in Mild Asthma (SYGMA) trials, published literature, and commercial costs. Outcomes were quality-adjusted life-years (QALY), costs, incremental net monetary benefit (INMB), severe asthma exacerbations, well-controlled asthma days, and asthma-related deaths. Microsimulation was used to evaluate underinsured Americans living with mild asthma (n = 5,250,000). RESULTS: Inhaled epinephrine was dominated (with lower QALYs gains at a higher cost) by both as-needed budesonide-formoterol (INMB, $15,541 at a willingness-to-pay of $100,000 per QALY) and the no-OTC inhaler option (INMB, $1023). Adults using as-needed budesonide-formoterol had 145 more well-controlled asthma days, 2.79 fewer severe exacerbations, and an absolute risk reduction of 0.23% for asthma-related death compared with inhaled epinephrine over a patient lifetime. As-needed budesonide-formoterol remained dominant in all sensitivity and scenario analyses, with a 100% probability of being cost-effective compared with inhaled epinephrine in probabilistic sensitivity analysis. CONCLUSION: If made available, OTC as-needed budesonide-formoterol for treating mild asthma in underinsured adults without HCP management improves asthma outcomes, prevents fatalities, and is cost-saving.


Asunto(s)
Asma , Combinación Budesonida y Fumarato de Formoterol , Adulto , Humanos , Combinación Budesonida y Fumarato de Formoterol/uso terapéutico , Broncodilatadores/uso terapéutico , Budesonida/uso terapéutico , Análisis Costo-Beneficio , Fumarato de Formoterol/uso terapéutico , Etanolaminas/uso terapéutico , Asma/tratamiento farmacológico , Epinefrina/uso terapéutico , Combinación de Medicamentos , Administración por Inhalación
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