Tag Archives: systematic review

Review on acceptability and WTP for HIV vaccine

J. Pharm. Pharmacogn. Res., vol. 10, no. 4, pp. 748-767, July-August 2022.

Review

Acceptability of and willingness to pay for human immunodeficiency virus vaccination: A systematic literature review

[Aceptabilidad y disposición a pagar por la vacunación contra el virus de la inmunodeficiencia humana: Una revisión sistemática de la literatura]

Tram N.T. Huyen1, Somying Pumtong1, Sermsiri Sangroongruangsri1, Luerat Anuratpanich1,2*

1Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.

2Department of Pharmacy, Division of Social and Administrative Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand.

*E-mail: luerat.anu@mahidol.ac.th

Abstract

Context: Vaccines for the human immunodeficiency virus (HIV) have considerably improved public health in the last century. Important considerations, however, are that effective vaccination substantially depends on the acceptability of future vaccines and that monetary measurements of vaccine preference, as reflected by the willingness to pay (WTP), may help policymakers establish health capital priorities.

Aims: To systematically pool data on vaccine acceptability and WTP.

Methods: A systematic search was performed over five databases to identify eligible articles published from 2005 to 2020, and key terms were used in accordance with the guidelines of the Preferred Reporting Items for Systematic Review and Meta-Analyses. Two researchers independently assessed the articles, extracted relevant data, and drew numerical and descriptive summaries for result presentation via Excel.

Results: Out of 31 eligible studies, 28 and 3 reported on the acceptability of and WTP for HIV vaccination, respectively. Acceptability levels ranged from 2.94% to 93.10%, with the average being 60.16%, and WTP values fell between US$108 and US$671. The most prevalent themes were the characteristics of HIV vaccines (safety/side effects, efficacy, duration of protection, vaccine-induced seropositivity).

Conclusions: Overall, the review uncovered a lack of standardized, universal, and acceptable scales for determining acceptability and WTP. The evaluation provided a comprehensive and systematic summary of these matters along with useful information for policymakers on maximizing public health under limited resources.

Keywords: acceptability; HIV; immunization; systematic review; vaccination; willingness-to-pay.

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Resumen

Contexto: Las vacunas contra el virus de la inmunodeficiencia humana (VIH) han mejorado considerablemente la salud pública en el último siglo. Las consideraciones importantes, sin embargo, son que la vacunación efectiva depende sustancialmente de la aceptabilidad de las vacunas futuras y que las mediciones monetarias de la preferencia por la vacuna, reflejadas en la disposición a pagar (WTP), pueden ayudar a los formuladores de políticas a establecer prioridades de capital de salud.

Objetivos: Agrupar sistemáticamente los datos sobre la aceptabilidad de las vacunas y la disposición a pagar.

Métodos: Se realizó una búsqueda sistemática en cinco bases de datos para identificar artículos elegibles publicados entre 2005 y 2020, y se utilizaron términos clave de acuerdo con las pautas de Preferred Reporting Items for Systematic Review and Meta-Analyses. Dos investigadores evaluaron de forma independiente los artículos, extrajeron datos relevantes y elaboraron resúmenes numéricos y descriptivos para la presentación de resultados a través de Excel.

Resultados: De los 31 estudios elegibles, 28 y 3 informaron sobre la aceptabilidad y la disposición a pagar por la vacunación contra el VIH, respectivamente. Los niveles de aceptabilidad oscilaron entre 2,94 % y 93,10 %, con un promedio de 60,16 %, y los valores de disposición a pagar estuvieron entre US$ 108 y US$ 671. Los temas más predominantes fueron las características de las vacunas contra el VIH (seguridad/efectos secundarios, eficacia, duración de la protección, seropositividad inducida por la vacuna).

Conclusiones: En general, la revisión descubrió la falta de escalas estandarizadas, universales y aceptables para determinar la aceptabilidad y la disposición a pagar. La evaluación brindó un resumen completo y sistemático de estos asuntos junto con información útil para los formuladores de políticas sobre cómo maximizar la salud pública con recursos limitados.

Palabras Clave: aceptabilidad; inmunización; revisión sistemática; vacunación; VIH; voluntad de pago.

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Citation Format: Huyen TNT, Pumtong S, Sanroongruangsri S, Anuratpanich L (2022) Acceptability of and willingness to pay for human immunodeficiency virus vaccination: A systematic literature review. J Pharm Pharmacogn Res 10(4): 748–767.
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© 2022 Journal of Pharmacy & Pharmacognosy Research (JPPRes)

Modified pectins with activity against colon cancer

J. Pharm. Pharmacogn. Res., vol. 10, no. 4, pp. 616-651, July-August 2022.

Review

Pectinas modificadas con actividad contra el cáncer de colon: Una revisión sistemática de 2010-2021

[Modified pectins with activity against colon cancer: A systematic review from 2010-2021]

Matías Pérez-Loyola, Marisela Valdés-González, Gabino Garrido*

Departamento de Ciencias Farmacéuticas, Facultad de Ciencias, Universidad Católica del Norte, Angamos 0610, Antofagasta, Chile.

*E-mail: gabino.garrido@ucn.cl

Abstract

Context: Colon cancer is a serious disease that can be hereditary or arise from exposure to carcinogens in unhealthy food. Current chemotherapy treatment has serious cardiovascular adverse effects, is not always effective, and there may be resistance to treatment. Recently, studies have found an optimal anticancer activity of modified pectins on colon cancer.

Aims: To systematically review the scientific literature, with PRISMA guidelines, of the articles found in the last 11 years, on the potential anticancer effects of pectins on colon cancer.

Methods: PRISMA and Rayyan were used for the selection of studies and a standardized search was followed in four databases with the terms: modified pectins, cancer, therapy. Data extraction was performed using Excel and relevant information on anticancer activity was collected.

Results: In total, 16 articles were included, finding seven in vitro, three mixed and six in vivo studies. The anticancer activity and optimization of the formulation, encapsulation, release of pectin-based drugs were evaluated by different methods in 12 and six articles, respectively. Most of the studies were classified as high quality with the AXIS tool. Furthermore, 11 out of 12 articles showed positive effects of modified pectins on colon cancer both in vivo and in vitro and six out of six articles found positive effects on pectin-based formulations.

Conclusions: The evidence found suggests a beneficial effect of modified pectins on colon cancer, however, more in vivo studies are required.

Keywords: colon cancer; modified pectin; systematic review; therapy.

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Resumen

Contexto: El cáncer de colon es una patología grave que puede ser hereditaria o surgir por exposición a carcinógenos en la alimentación no saludable. El tratamiento mediante quimioterapia actual posee efectos adversos cardiovasculares graves, no siempre es efectivo y puede existir resistencia al tratamiento. Recientemente, estudios han encontrado una óptima actividad anticancerígena de las pectinas modificadas sobre cáncer de colon.

Objetivos: Revisar sistemáticamente la literatura científica, con directrices PRISMA, de los artículos encontrados en los últimos 11 años, sobre los potenciales efectos anticancerígenos de las pectinas sobre el cáncer de colon.

Métodos: Se utilizó PRISMA y Rayyan para la selección de estudios y se siguió una búsqueda estandarizada en cuatro bases de datos con los términos: modified pectins, cancer, therapy. La extracción de datos se realizó mediante Excel y se recopilo información relevante sobre la actividad anticancerígena.

Resultados: En total, se incluyeron 16 artículos, encontrándose siete estudios in vitro, tres mixtos y seis in vivo. Se evaluó por diferentes métodos la actividad anticancerígena y la optimización de la formulación, encapsulación, liberación de fármacos a base de pectina, en 12 y seis artículos, respectivamente. Mayoritariamente, los estudios fueron clasificados de alta calidad con la herramienta AXIS. Además, 11 de 12 artículos mostraron efectos positivos de las pectinas modificadas sobre el cáncer de colon tanto in vivo como in vitro y seis de seis artículos obtuvieron efectos positivos en las formulaciones a base de pectina.

Conclusiones: La evidencia encontrada sugiere un efecto beneficioso de las pectinas modificadas sobre el cáncer de colon, sin embargo, se requieren más estudios in vivo.

Palabras Clave: cáncer de colon; pectina modificada; revisión sistemática; terapia.

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Citation Format: Pérez-Loyola M, Valdés-González M, Garrido G (2022) Pectinas modificadas con actividad contra el cáncer de colon: Una revisión sistemática de 2010-2021. [Modified pectins with activity against colon cancer: A systematic review from 2010-2021]. J Pharm Pharmacogn Res 10(4): 616–651.
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© 2022 Journal of Pharmacy & Pharmacognosy Research (JPPRes)

Wound healing ability of flaxseed extracts



J Pharm Pharmacogn Res 10(1): 1-12, 2022.

Review

Systematic review of flaxseed (Linum usitatissimum L.) extract and formulation in wound healing

[Revisión sistemática sobre extracto y formulación de linaza (Linum usitatissimum L.) en la cicatrización de heridas]

Abdul Talib Mat Sharil1, Mustafa Basma Ezzat2, Lestari Widya2, Mat Husin Amri Nurhakim1, Ab Razak Nor Hikmah2, Zainon Nabilah Zafira2, Muhammad Salahuddin Haris1*

1Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia.

2Department of Fundamental Dental and Medical Sciences, Kulliyyah of Dentistry, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, 25200, Kuantan, Pahang, Malaysia.

*E-mail: solah@iium.edu.my

Abstract

Context: Flaxseed constituents provide to antioxidant, anti-inflammatory, antimicrobial and wound healing benefits.

Aims: To systematically review the experimental evidence on the wound healing ability of flaxseed extracts and formulations.

Methods: Comprehensive searches in six databases (Scopus, Science Direct, Web of Science, PubMed, Google Scholar and Dimensions) were carried out from the beginning of databases until December 2020, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol. The terms used in searches were (Linum usitatissimum L., flaxseed, linseed, flax) AND (extract) AND (wound heal, heal, heal type, wound) for collection of articles, with only articles in English and research articles were included. Transgenic term were excluded. AXIS tool was chosen to assess the quality and risk of bias. The data were then categorised in term of extracts, laboratory formulation, and wound healing.

Results: In total, 999 articles were collected and screened based on the pre-determined inclusion and exclusion criteria. Finally, 10 articles were included in the review. The majority of publications reported significant findings of flaxseed oil on wound healing regardless of extraction method and formulation. Healing parameters on excision, incision, and burn wound models were studied. Lack of laboratory formulation mentioned in the collected articles gave limitation impact on this study.

Conclusions: Flaxseed oil formulation appears to exert a positive effect on wound healing. Therefore, extensive studies needed to evaluate the transportation of flaxseed phytochemicals into skin dermis by advanced drug formulation.

Keywords: extraction; flaxseed; formulation; Linum usitatissimum L.; systematic review; wound healing.

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Resumen

Contexto: Los componentes de la linaza proporcionan beneficios antioxidantes, antiinflamatorios, antimicrobianos y de cicatrización de heridas.

Objetivos: Revisar sistemáticamente las evidencias experimentales sobre la capacidad de cicatrización de heridas de los extractos y formulaciones de linaza.

Métodos: Se realizaron búsquedas integrales en seis bases de datos (Scopus, Science Direct, Web of Science, PubMed, Google Scholar y Dimensions) desde el inicio de las bases de datos hasta diciembre de 2020, según Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) protocolo. Los términos utilizados en las búsquedas fueron (Linum usitatissimum L., flaxseed, linseed, flax) AND (extracto) AND (herida curar, curar, curar tipo, herida) para la colección de artículos, con solo artículos en inglés y se incluyeron artículos de investigación. Se excluyeron los términos transgénicos. Se eligió la herramienta AXIS para evaluar la calidad y el riesgo de sesgo. Luego, los datos se clasificaron en términos de extractos, formulación de laboratorio y cicatrización de heridas.

Resultados: En total, se recopilaron y seleccionaron 999 artículos según los criterios de inclusión y exclusión predeterminados. Finalmente, se incluyeron 10 artículos en la revisión. La mayoría de las publicaciones informaron hallazgos significativos del aceite de linaza en la cicatrización de heridas, independientemente del método de extracción y la formulación. Se estudiaron los parámetros de curación en modelos de escisión, incisión y quemaduras. La falta de formulación de laboratorio mencionada en los artículos recopilados dio un impacto de limitación en este estudio.

Conclusiones: La formulación de aceite de linaza parece ejercer un efecto positivo en la cicatrización de heridas. Por lo tanto, se necesitaban estudios extensos para evaluar el transporte de fitoquímicos de la linaza a la dermis de la piel mediante una formulación avanzada de fármacos.

Palabras Clave: extracción; cicatrización de herida; formulación; Linum usitatissimum; revisión sistemática; semilla de lino.

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Citation Format: Mat Sharil AT, Basma Ezzat M, Widya L, Amri Nurhakim MH, Nor Hikmah AR, Nabilah Zafira Z, Haris MS (2022) Systematic review of flaxseed (Linum usitatissimum L.) extract and formulation in wound healing. J Pharm Pharmacogn Res 10(1): 1–12.

© 2022 Journal of Pharmacy & Pharmacognosy Research (JPPRes)