Chronic Administration of Oil Palm (<i>Elaeis guineensis</i>) Leaves Extract Attenuates Hyperglycaemic-Induced Oxidative Stress and Improves Renal Histopathology and Function in Experimental Diabetes

Varatharajan, Rajavel; Sattar, Munavvar Zubaid Abdul; Abdulla, Mahmood Ameen; Kassim, Normadiah M.; Abdullah, Nor Azizan

doi:10.1155/2012/195367

Cited by 14 publications

(9 citation statements)

References 57 publications

(49 reference statements)

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“…Traditional use of leaf extract has led to its study for wound‐healing and antimicrobial properties (Chong et al ., ; Sasidharan et al ., ; Sasidharan, Logeswaran & Latha, ), and the role of its antioxidants in treating disease (e.g. diabetes; Rajavel et al ., ). Anecdotally, a variety of uses have been ascribed to oil palm, including all parts of the plant (Opute, ; Caniago & Siebert, ; Chong et al ., ).…”

Section: Resultsmentioning

confidence: 97%

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

et al. 2016

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Oil palm plantations have expanded rapidly in recent decades. This large-scale land-use change has had great ecological, economic, and social impacts on both the areas converted to oil palm and their surroundings. However, research on the impacts of oil palm cultivation is scattered and patchy, and no clear overview exists. We address this gap through a systematic and comprehensive literature review of all ecosystem functions in oil palm plantations, including several (genetic, medicinal and ornamental resources, information functions) not included in previous systematic reviews. We compare ecosystem functions in oil palm plantations to those in forests, as the conversion of forest to oil palm is prevalent in the tropics. We find that oil palm plantations generally have reduced ecosystem functioning compared to forests: 11 out of 14 ecosystem functions show a net decrease in level of function. Some functions show decreases with potentially irreversible global impacts (e.g. reductions in gas and climate regulation, habitat and nursery functions, genetic resources, medicinal resources, and information functions). The most serious impacts occur when forest is cleared to establish new plantations, and immediately afterwards, especially on peat soils. To variable degrees, specific plantation management measures can prevent or reduce losses of some ecosystem functions (e.g. avoid illegal land clearing via fire, avoid draining of peat, use of integrated pest management, use of cover crops, mulch, and compost) and we highlight synergistic mitigation measures that can improve multiple ecosystem functions simultaneously. The only ecosystem function which increases in oil palm plantations is, unsurprisingly, the production of marketable goods. Our review highlights numerous research gaps. In particular, there are significant gaps with respect to socio-cultural information functions. Further, there is a need for more empirical data on the importance of spatial and temporal scales, such as differences among plantations in different environments, of different sizes, and of different ages, as our review has identified examples where ecosystem functions vary spatially and temporally. Finally, more research is needed on developing management practices that can offset the losses of ecosystem functions. Our findings should stimulate research to address the identified gaps, and provide a foundation for more systematic research and discussion on ways to minimize the negative impacts and maximize the positive impacts of oil palm cultivation.

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Section: Resultsmentioning

confidence: 97%

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

et al. 2016

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“…The juice squeezed from oil palm leaves can be applied on wounds to enhance healing while the sap is used as laxative, and in fermented form is effective for improving lactation in nursing mothers [56]. Leaf extract is also useful in treating diabetes [67]. Dropping infusion of young leaf of E. guineensis on affected part of body is useful for ear-ache of Idoma people, Benue State, Nigeria [50].…”

Section: Frondsmentioning

confidence: 99%

Indigenous Traditional Knowledge on Health and Equitable Benefits of Oil Palm (Elaeis spp.)

Reddy¹,

Kalpana²,

Sivaraj³

et al. 2019

OALib

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Recent international policy resolutions have recognized the importance of indigenous knowledge and potential of native medicinal plants in providing health and equitable benefits to the indigenous communities. Lack of knowledge on available native medicinal plants and their health potential may result in inappropriate health care practices causing ailments and associated problems. Oil palm is among the plants that are widely used by the traditional natives of West Africa. Every part of the oil palm has domestic, economic, environmental and medicinal values. This review aims at exploration, perpetuation and preservation of indigenous knowledge on oil palm for health and equitable benefits for incorporation of the same into primary health care system. The traditional medicinal uses of oil palm by indigenous communities are well known from the bibliographical records. The literature consulted for this review was obtained from Medline, PubMed, Embase, Science Direct, Scopus, SID and Google Scholar search carried out from October, 2018 to November, 2018. The literature survey and screening of data revealed that preparations from different parts of Elaeis guineensis are widely used in traditional medicine by the indigenous communities, with most of the uses relating to leaf, fruit, seed, infructescence/inflorescence, root and heart. E. guineensis is used in traditional medicine mostly without being mixed with other plants, and less commonly in mixtures, sometimes in mixture with products of animal origin to treat ailments like malaria,

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“…Osim et al (1994) had already shown that chronic consumption of thermoxidized palm oil destroys kidney tissues. There is evidence that the tocotrienol rich fraction (TRF) of fresh palm oil protects against renal injury (Rajavel et al 2012;Nowak et al 2012). Therefore TRF could have contributed to the normal GFR of the fresh palm oil-treated group, while the lack of TRF in the TPO and PPO may have contributed to the reduced GFR in these study groups.…”

Section: Discussionmentioning

confidence: 98%

Chronic consumption of three forms of palm oil diets alters glomerular filtration rate and renal plasma flow

Beshel¹,

Antai²,

Osim³

2014

gpb

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The effects of chronic consumption of three types of palm oil diets on glomerular filtration rate (GFR), renal plasma flow (RPF) and blood pressure were studied. Wistar rats were randomly assigned into four groups of ten rats each, respectively: control, fresh (FPO), photoxidized (PPO), thermoxidized (TPO) palm oil diet-fed rats. The control group was fed rat chow only, while experimental groups had different palm oil diets at 15% wt/wt for twelve weeks and tap water ad libitum. After the feeding period, GFR, RPF, systolic and diastolic blood pressures were measured. GFR and RPF of the TPO (0.07 ± 0.01 ml/min and 1.50 ± 0.24 ml/min) and PPO (0.14 ± 0.01 and 2.54 ± 0.11) groups were significantly (p < 0.001) reduced compared with control (0.77 ± 0.04 and 5.3 ± 0.30) and FPO (0.81 ± 0.02 and 4.8 ± 0.13) groups. The GFR and RPF of the TPO group was significantly (p < 0.05) higher than that of the PPO group. Systolic and diastolic blood pressures of the TPO group (140 ± 3 mmHg and 106 ± 4 mmHg) were significantly (p < 0.01) increased when compared with the control (112 ± 6.4 and 78 ± 5), FPO (118 ± 5 and 81 ± 6) and PPO (122 ± 5 and 89 ± 5) groups. These results suggest that chronic consumption of TPO and PPO caused a decrease in GFR and RPF, but increased blood pressure in rats, while FPO did not adversely affect blood pressure, GFR and RPF.

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Chronic Administration of Oil Palm (Elaeis guineensis) Leaves Extract Attenuates Hyperglycaemic-Induced Oxidative Stress and Improves Renal Histopathology and Function in Experimental Diabetes

Cited by 14 publications

References 57 publications

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

Indigenous Traditional Knowledge on Health and Equitable Benefits of Oil Palm (Elaeis spp.)

Chronic consumption of three forms of palm oil diets alters glomerular filtration rate and renal plasma flow

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Chronic Administration of Oil Palm (Elaeis guineensis) Leaves Extract Attenuates Hyperglycaemic-Induced Oxidative Stress and Improves Renal Histopathology and Function in Experimental Diabetes

Cited by 14 publications

References 57 publications

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

A review of the ecosystem functions in oil palm plantations, using forests as a reference system

Indigenous Traditional Knowledge on Health and Equitable Benefits of Oil Palm (Elaeis spp.)

Chronic consumption of three forms of palm oil diets alters glomerular filtration rate and renal plasma flow

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Chronic consumption of three forms of palm oil diets alters glomerular filtration rate and renal plasma flow