scholarly journals Krim ekstrak teh hijau 20% (Camellia sinensis) mencegah peningkatan jumlah melanin sama efektif dengan krim hidrokuinon 4% pada kulit marmut (Cavia porcellus) yang dipajan sinar ultraviolet B

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Putri Puspitasari ◽  
AAG Wiraguna ◽  
Wimpie Pangkahila

Abstract: This study was aimed to evaluate the effectiveness of 20% green tea extract in preventing the increase of melanin in guinea pig skin exposed to UV-B and to compare the effectiveness of this treatment to 4% hydroquinone cream. This was an experimental study with the post-test only control group design. Subjects were four groups; each consisted of 7 male guinea pigs. Group 1, the control group, was exposed to UV-B only. Group 2 was exposed to UV-B and applied with cream based substance. Group 3 was exposed to UV-B and applied with 4% hydroquinone cream. Group 4 was exposed to UV-B and applied with 20% green tea extract. The total UV-B intensity was 390 mJ/cm2 consistently exposed for two weeks. Histopathological slides of the skin tissue were stained with Masson Fontana technique. The total amount of melanin was calculated in percentage of pixel compared to pixel of melanin in total epidermis. The results showed that the highest amount of melanin was in group 1 (24.44%) and the lowest amount of melanin was in group 3 (1.04%) meanwhile the amount of melanin in group 4 (1.34%) was nearly the same with group 3. There were significant differences between group 1 to group 3 and 4 (P < 0.05). There was no significant difference between group 3 and group 4 (P > 0.05). Conclusion: The 20% green tea extract was as effective as 4% hydroquinone cream in inhibiting the increase of melanin in guinea pigs’skin exposed to UV-B.Keywords: green tea extract, melanin, ultraviolet BAbstrak: Penelitian ini bertujuan untuk mengetahui efek pemberian krim ekstrak teh hijau 20% terhadap peningkatan jumlah melanin pada kulit marmut yang dipajan sinar UVB serta membandingkan efektivitasnya dengan krim hidrokuinon 4%. Jenis penelitian ialah eksperimental murni dengan post test only control group design. Subyek penelitian terdiri dari empat kelompok dengan 7 ekor marmut jantan setiap kelompok. Kelompok 1 (kelompok kontrol) diberi pajanan sinar UV-B saja. Kelompok 2 diberi pajanan sinar UV-B dan diolesi krim dasar. Kelompok 3 diberi pajanan sinar UV-B dan krim hidrokuinon 4% sedangkan kelompok 4 diberi pajanan sinar UV-B dan krim ekstrak teh hijau 20%. Dosis total UVB yaitu 390 mJ/cm2 diberikan selama 2 minggu. Sediaan histopatologik jaringan kulit dipulas dengan pewarnaan Masson Fontana. Jumlah melanin dihitung dengan persentase pixel luas area melanin dibandingkan dengan pixel seluruh jaringan epidermis. Hasil penelitian menunjukkan jumlah melanin tertinggi pada kelompok 1 (24,44%) dan terendah pada kelompok 3 (1,04%). Jumlah melanin pada kelompok 4 (1,34%) hampir sama dengan kelompok 3. Terdapat perbedaan bermakna antara kelompok 1 dengan kelompok 3 dan 4 (P < 0,05). Perbandingan antara kelompok 3 dan 4 tidak berbeda bermakna dalam mencegah peningkatan jumlah melanin (P > 0,05). Simpulan: Pemberian krim ekstrak teh hijau 20% sama efektif dengan krim hidrokuinon 4% dalam mencegah peningkatan jumlah melanin kulit marmut yang dipajan sinar UV-B.Kata kunci: krim ekstrak teh hijau, melanin, ultraviolet B

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Ali Akbar Abolfathi ◽  
Daryoush Mohajeri ◽  
Ali Rezaie ◽  
Mehrdad Nazeri

Although diabetic hepatopathy is potentially less common, it may be appropriate for addition to the list of target organ conditions related to diabetes. This study was designed to evaluate the hepatoprotective properties of green tea extract (GTE) in STZ-induced diabetes in rats. Wistar rats were made diabetic through single injection of STZ (75 mg/kg i.p.). The rats were randomly divided into four groups of 10 animals each: Group 1, healthy control; Group 2, nondiabetics treated with GTE administered orally (1.5%, w/v); Group 3, diabetics; Group 4, diabetics treated with GTE (1.5%, w/v) for 8 weeks. Serum biomarkers were assessed to determine hepatic injury. Malondialdehyde (MDA) and reduced glutathione (GSH) contents were measured to assess free radical activity in the liver tissue. Hepatic antioxidant activities of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) were also determined. The biochemical findings were matched with histopathological verifications. Liver MDA content and serum levels of ALT, AST, ALP, and bilirubin in Group 3 significantly increased compared to Group 1 (P<0.05) and significantly decreased in Group 4 compared to Group 3 (P<0.05). Serum albumin level and GSH, SOD, CAT, and GSH-Px contents of the liver in Group 3 were significantly decreased compared to Group 1 (P<0.05) and were significantly increased in Group 4 compared to Group 3 (P<0.05). Histopathologically, the changes were in the same direction with biochemical findings. This study proved the hepatoprotective activity of GTE in experimentally induced diabetic rats.


2018 ◽  
Vol 10 (2) ◽  
Author(s):  
Corazon H. Dumaria ◽  
A AGP Wiraguna ◽  
Wimpie Pangkahila

Abstract: This study was aimed to prove that administration of 10% redfruit extract cream could prevent the increase of skin melanin in guinea pig exposed to UVB and to compare this effect with 4% hydroquinone cream. This was a true experimental study using post test only control group design. Subjects were devided into three groups; each of 10 guinea pigs. Group 1, the control group, was exposed to UVB and applied with basic cream. Group 2 was exposed to UVB and applied with 4% hydroquinone cream. Group 3 was exposed to UVB and applied with 10% redfruit extract cream. The total dose of UVB was 390 mJ/cm2 given for 2 weeks. The amount of melanin was calculated using the percentage of the pixel area of melanin and was compared with the pixel areas of all epidermal tissues. The results showed that the highest percentage of melanin area was in group 1 (19.78%±3.79%). The percentage of melanin area in group 3 was 1.25%±0.76% meanwhile in group 2 was 0.85%±0.37%. There were signi-ficant differences in melanin percentage between the control group and group 2 as well as group 3 (P <0.05). There was no significant difference in melanin percentage between group 2 and group 3 (P >0.05). Conclusion: The 10% redfruit extract cream could prevent the increase of skin melanin in guinea pig exposed to UVB as effectively as the 4% hydroquinone cream.Keywords: redfruit extract cream, melanin, UVBAbstrak: Penelitian ini bertujuan untuk membuktikan efek pemberian krim ekstrak buah merah 10% dalam mencegah peningkatan jumlah melanin kulit marmut yang dipapar sinar UVB dan perbandingannya dengan krim hidrokuinon 4%. Jenis penelitian ialah eksperimental murni dengan post test only control group design. Sampel terdiri dari tiga kelompok dengan jumlah sampel 10 ekor marmut jantan tiap kelompok. Kelompok 1 yaitu kelompok kontrol, diberi paparan sinar UVB dan diolesi krim dasar. Kelompok 2 diberi paparan sinar UVB dan diolesi krim hidrokuinon 4%. Kelompok 3 diberi paparan sinar UVB dan diolesi krim ekstrak buah merah 10%. Dosis total UVB yaitu 390 mJ/cm2 diberikan selama 2 minggu. Jumlah melanin dihitung dengan persentase pixel luas area melanin dibandingkan dengan pixel seluruh jaringan epidermis. Hasil penelitian menunjukkan jumlah melanin tertinggi pada kelompok 1 (19,78± 3,79%) dan terendah pada kelompok 2 (0,85±0,37%), sedangkan jumlah melanin pada kelompok 3 di antara keduanya (1,25±0,76%). Terdapat perbedaan bermakna antara kelompok 1 dengan kelompok 2 dan 3 (P <0,05). Tidak terdapat perbedaan bermakna antara kelompok 2 dan 3 dalam mencegah peningkatan jumlah melanin (P >0,05 ). Simpulan: Krim ekstrak buah merah 10% dapat mencegah peningkatan jumlah melanin kulit marmut yang dipapar sinar UVB sama efektif dengan krim hidrokuinon 4%.Kata kunci: krim ekstrak buah merah, melanin, UVB


2021 ◽  
Vol 7 (3) ◽  
pp. 568-575
Author(s):  
Nora Veri

Background: The type of injectable contraceptive that is currently widely used is Depo Medroxyprogesterone Acetate (DMPA) which contains the hormone progestin, which is a synthetic material from progesterone. The use of progestin contraceptives can reduce endometrial proliferation and increase apoptosis in endometrial tissue. Cell apoptosis is triggered by an imbalance between positive signals (cell growth factors) and negative signals (DNA damage and increased levels of oxidants) under conditions of oxidative stress. Apoptosis of oocytes in large numbers will cause tissue damage which is characterized by atrophy of the ovaries and causes decreased reproductive function. Oxidative stress can be overcome with endogenous and exogenous antioxidants to reduce free radicals in the body. Green tea is one of the herbal plants that act as antioxidants and phytoestrogens, through the polyphenol compounds contained therein.Purpose: To know the role of green tea in providing protective effects on the ovaries, endometrium and aorta in rats.Methods : The research design used in this study was a true experiment with a post test only control group design approach. In this study, the researchers treated green tea extract at a dose of 10.8 mg/rat/day, 21.6 mg/rat/day, and 43.2 mg/rat/day and exposure to DMPA at a dose of 2.7 mg/rat/day. Green tea extract was administered orally for 28 days. The research hypothesis is that green tea can increase the number of follicles, the number of endometrial glands and reduce the arteriosclerosis score of blood vessels. The preparations were stained by the Hemotoxin-Eosin (HE) method and using the OlyVIA software.Result: There was a significant decrease in the number of corpus luteum, endometrial glands and arteriosclerosis scores due to DMPA exposure but not on the number of follicles. Green tea extract was able to increase the number of endometrial glands at a dose of 10.8 mg/day, but there was no significant difference between doses. Green tea extract was able to reduce arteriosclerosis scores, but the most effective dose was 43.2 mg/day.Conclusion: DMPA exposure was able to significantly reduce the number of corpus luteum, the number of endometrial glands and arteriosclerosis score, but there was no significant difference in the number of primary, secondary, tertiary and de Graff follicles, there was a difference in the number of corpus luteum in the group exposed to DMPA, green tea extract was able to increase the number of endometrial glands and decrease the arteriosclerosis score.Suugestion It is necessary to determine the phase of the reproductive cycle before calculating the number of follicles and examining the level of the hormone estrogen to determine whether the experimental animal has become a hypoestrogen model or not. Keywords : Progesterone, Contraception, Green Tea, Antioxidant ABSTRAK Latar Belakang : Jenis kontrasepsi suntik yang saat ini banyak digunakan adalah Depo Medroxyprogesterone Acetate (DMPA) yang mengandung hormon progestin yaitu bahan sintestis dari progesteron. Penggunaan kontrasepsi progestin dapat menurunkan proliferasi endometrium dan meningkatkan apoptosis pada jaringan endometrium. Apoptosis sel dipicu karena adanya ketidakseimbangan antara sinyal positif (faktor pertumbuhan sel) dan sinyal negatif (kerusakan DNA dan peningkatan kadar oksidan) pada kondisi stress oksidatif. Apoptosis pada oosit dalam jumlah yang besar akan mengakibatkan kerusakan jaringan yang ditandai dengan terjadinya atrofi pada ovarium dan menyebabkan fungsi reproduksi menurun. Stress oksidatif dapat diatasi dengan antioksidan endogen dan eksogen untuk menurunkan radikal bebas dalam tubuh. Teh hijau merupakan salah satu tanaman herbal yang berperan sebagai antioksidan dan fitoestrogen, melalui senyawa polifenol yang terkandung didalamnya.Tujuan : Mengetahui peran teh hijau dalam meberikan efek protektif terhadap ovarium, endometrium dan aorta pada tikus.Metode : Rancangan penelitian yang digunakan dalam penelitian ini adalah true experiment dengan pendekatan post test only control group design. Dalam penelitian ini perlakuan peneliti adalah pemberian ekstrak teh hijau dengan dosis 10,8 mg/tikus/hari, 21,6 mg/tikus/hari, dan 43,2 mg/tikus/hari dan paparan DMPA dosis 2,7 mg/tikus/hari pada tikus. Ekstrak teh Hijau diberikan secara oral selama 28 hari. Hipotesis penelitian adalah teh hijau mampu meningkatkan jumlah folikel, jumlah kelenjar endometrium dan menurunkan skor arteriosklerosis pembuluh darah. Preparat diwarnai dengan metode Hemotoxin-Eosin (HE) dan menggunakan software OlyVIA.Hasil : Terjadi penurunan jumlah korpus luteum, kelenjar endometrium dan skor arteriosklerosis akibat paparan DMPA secara bermakna namun tidak pada jumlah folikel. Ekstrak teh hijau mampu meningkatkan jumlah kelenjar endometrium pada dosis 10.8 mg/hari, namun tidak ada perbedaan yang signifikan antar dosis. Ekstrak teh hijau mampu menurunkan skor arteriosklerosis, namun yang paling efektif adalah dosis 43.2 mg/hari.Kesimpulan : Paparan DMPA mampu menurunkan jumlah korpus luteum, jumlah kelenjar endometrium dan skor arteriosklerosis secara bermakna, namun tidak ada perbedaan yang bermakna pada jumlah folikle primer, sekunder, tersier dan de Graff, ada perbedaan jumlah korpus luteum pada kelompok yang dipapar DMPA, ekstrak teh hijau mampu meningkatkan jumlah kelenjar endometrium  dan menurunkan skor arteriosklerosis.Saran Perlu menentukan fase siklus reproduksi sebelum dilakukan perhitungan jumlah folikel dan pemeriksaan kadar hormon estrogen untuk menentukan apakah hewan coba sudah menjadi model hypoestrogen atau belum. Kata Kunci :  DMPA, Kontrasepsi, Teh Hijau, Antioksidan 


2019 ◽  
Vol 4 (1) ◽  
pp. 348
Author(s):  
Endah Wijayanti ◽  
Tatit Nurseta ◽  
Eviana Norahmawati

Abstract Monosodium glutamate is one of the additives used a food flavoring and is widely known by society. The consumption of MSG in large quantities leads to the lesions of the hypothalamus nucleus, leading to some changes in the reproductive system. The aim of this study is to find out the influence of green tea extract against Apoptosis cells Granulose ovarian follicle Rattus norvegicus Dipajan MSG. The research method of using a true experimental research approach post test only control group Design. The sample used was a female white rat (Rattus norvegicus) the number of 25 tails divided into 5 groups. Exposure of monosodium glutamate administered at a dose of 0.7 mg/grBB per oral and green tea extract a variety of doses administered 2 hours thereafter during 30 days after the rats were obtained in the Proestrus phase. Apoptosis examination uses In Situ Cell Death Detection Kit, POD catalog number 11684817910 of Roche brand with Tunnel method. Data were analyzed using the One Way ANOVA test. Results showed that the lowest average apoptosis rate was seen in the MSG Administration treatment group and green tea extract dose 1.4 mg/tail/day (18,686 ± 2,247) but increased again on the group's MSG administration treatment and green tea extract dose 2.8 mg/tail/day (23,752 ± 3,206). So the administration of green tea extract of varying doses can decrease apoptosis in the Rattus norvegicus that is Dipajan MSG.   Keywords: green tea extract, monosodium glutamat, Apoptosis     Abstrak Monosodium glutamat, merupakan salah satu zat aditif yang digunakan sebagai penyedap makanan dan dikenal secara luas oleh masyarakat. Konsumsi MSG dalam jumlah besar menyebabkan lesi bagian nucleus arkuata hipotalamus sehingga menimbulkan beberapa perubahan pada sistem reproduksi. Tujuan dalam penelitian ini untuk mengetahui pengaruh ekstrak teh hijau terhadap Apoptosis Sel Granulosa Folikel Ovarium Rattus norvegicus yang dipajan MSG. Metode Penelitian menggunakan penelitian true eksperimental pendekatan post test only control group design. Sampel yang digunakan adalah tikus putih betina (Rattus norvegicus) sejumlah 25 ekor yang terbagi menjadi 5 kelompok. Paparan monosodium glutamat diberikan dengan dosis 0,7 mg/grBB per oral dan ekstrak teh hijau berbagai dosis diberikan 2 jam setelahnya selama 30 hari setelah didapatkan tikus berada pada fase proestrus. Pemeriksaan Apoptosis menggunakan In Situ Cell Death Detection Kit, POD nomor katalog 11684817910 merk Roche dengan metode Tunel. Data dianalisis menggunakan uji One Way Anova. Hasil penelitian menunjukkan bahwa Nilai rerata apoptosis terendah tampak pada kelompok perlakuan pemberian MSG dan ekstrak teh hijau dosis 1,4 mg/ekor/hari (18.686± 2.247) namun meningkat lagi pada kelompok perlakuan pemberian MSG dan ekstrak teh hijau dosis 2,8 mg/ekor/hari (23.752± 3.206). Sehingga pemberian ekstrak teh hijau berbagai dosis dapat menurunkan apoptosis pada Rattus norvegicus yang dipajan MSG   Kata Kunci : ekstrak teh hijau, monosodium glutamat,  dan Apoptosis


2019 ◽  
Vol 2 (5) ◽  
pp. 348
Author(s):  
Endah Wijayanti ◽  
Tatit Nurseta ◽  
Eviana Norahmawati

Abstract Monosodium glutamate is one of the additives used a food flavoring and is widely known by society. The consumption of MSG in large quantities leads to the lesions of the hypothalamus nucleus, leading to some changes in the reproductive system. The aim of this study is to find out the influence of green tea extract against Apoptosis cells Granulose ovarian follicle Rattus norvegicus Dipajan MSG. The research method of using a true experimental research approach post test only control group Design. The sample used was a female white rat (Rattus norvegicus) the number of 25 tails divided into 5 groups. Exposure of monosodium glutamate administered at a dose of 0.7 mg/grBB per oral and green tea extract a variety of doses administered 2 hours thereafter during 30 days after the rats were obtained in the Proestrus phase. Apoptosis examination uses In Situ Cell Death Detection Kit, POD catalog number 11684817910 of Roche brand with Tunnel method. Data were analyzed using the One Way ANOVA test. Results showed that the lowest average apoptosis rate was seen in the MSG Administration treatment group and green tea extract dose 1.4 mg/tail/day (18,686 ± 2,247) but increased again on the group's MSG administration treatment and green tea extract dose 2.8 mg/tail/day (23,752 ± 3,206). So the administration of green tea extract of varying doses can decrease apoptosis in the Rattus norvegicus that is Dipajan MSG.   Keywords: green tea extract, monosodium glutamat, Apoptosis     Abstrak Monosodium glutamat, merupakan salah satu zat aditif yang digunakan sebagai penyedap makanan dan dikenal secara luas oleh masyarakat. Konsumsi MSG dalam jumlah besar menyebabkan lesi bagian nucleus arkuata hipotalamus sehingga menimbulkan beberapa perubahan pada sistem reproduksi. Tujuan dalam penelitian ini untuk mengetahui pengaruh ekstrak teh hijau terhadap Apoptosis Sel Granulosa Folikel Ovarium Rattus norvegicus yang dipajan MSG. Metode Penelitian menggunakan penelitian true eksperimental pendekatan post test only control group design. Sampel yang digunakan adalah tikus putih betina (Rattus norvegicus) sejumlah 25 ekor yang terbagi menjadi 5 kelompok. Paparan monosodium glutamat diberikan dengan dosis 0,7 mg/grBB per oral dan ekstrak teh hijau berbagai dosis diberikan 2 jam setelahnya selama 30 hari setelah didapatkan tikus berada pada fase proestrus. Pemeriksaan Apoptosis menggunakan In Situ Cell Death Detection Kit, POD nomor katalog 11684817910 merk Roche dengan metode Tunel. Data dianalisis menggunakan uji One Way Anova. Hasil penelitian menunjukkan bahwa Nilai rerata apoptosis terendah tampak pada kelompok perlakuan pemberian MSG dan ekstrak teh hijau dosis 1,4 mg/ekor/hari (18.686± 2.247) namun meningkat lagi pada kelompok perlakuan pemberian MSG dan ekstrak teh hijau dosis 2,8 mg/ekor/hari (23.752± 3.206). Sehingga pemberian ekstrak teh hijau berbagai dosis dapat menurunkan apoptosis pada Rattus norvegicus yang dipajan MSG   Kata Kunci : ekstrak teh hijau, monosodium glutamat,  dan Apoptosis


2018 ◽  
Vol 24 (1) ◽  
pp. 37
Author(s):  
Annisa Trissatharra ◽  
Sri Ratna Dwiningsih ◽  
Ratna Sofaria Munir

Objectives: To identify the effect of monoclonal antibody bZP3 at ovarian follicles that undergo atresia and diameter of various ovarian follicles.Materials and Methods: This is a true experimental research with post only control group design. Samples were 36 female mices (Mus musculus) which is divided into 6 groups, there are 3 control groups (group 1, 2, and 3) injected by Phospatase Buffer Saline (PBS) 50µl and 3 treatment groups (group 4, 5, and 6) injected by Mab bZP3 50µl. Group 1 and 4 terminated at 5th day, group 2 and 5 terminated at 10th day, and group 3 and 6 terminated at 20th day. Evaluation of atretic ovarian follicles and diameter of ovarian follicles performed by hematoxylin eosin (HE) and the data processed by parametric statistic.Results: There are no significant in different among groups in the aspect of atretic follicles and diameter of folicles (p>0.05), but descriptively, number of follicles undergo atresia of the follicle primary, secondary, and tertiary treatment group was higher than the control group, except on the 20th day of observation time.Conclusion: administration of Mab bZP3 had no effect to amount of atretic follicles and diameter of folicles during observation time.


2017 ◽  
Vol 6 (2) ◽  
pp. 6
Author(s):  
Nurmawanti Nurmawanti ◽  
Ayly Soekanto

The aim of this research is to know the influence of anti mosquito electric gas that consisted Allethrin to the weight and colour of the rats liver. This research used an experimental method with the post test only  control group design.  The subject of this research is male rats weight of 150 grams each and total there was 24 rats that were divided to 4 groups. The first one, the  control groups (PO) was not given any of the gas, the second one, group 1 (P1) was given the gas for 4 hours everday, the third one, group  2 (P2), was given for 6 hours and last, group 3  (P3) was given 8 hours everyday. After later, on  30 Th day, the rats were terminated and being put in a surgery to remove their liver. This data was analyzed using SPPS for windows version 16. To see the differences in weight between the groups, it was analyzed using anova, and  to obtain the discoloration of the rats liver was analyzed using Kruskal Wallis Test. From the statistic tests, it show that there is significant difference in weight and color of liver in the group that α ≤ 0,05. According Anova Test, it shows that there is a significant difference α = 0,034 and from Kruskal Wallis test α = 0,013. In the conclusion anti mosquito electric gas that consist Allethrin affects the weight and the color of rats liver.


2018 ◽  
Vol 9 (2) ◽  
pp. 069
Author(s):  
Marisa Riliani ◽  
Wimpie Pangkahila ◽  
Wiraguna AAGP

<p>Skin is the main target of ultraviolet (UV) ray that result the abnormality of hiperpigmentation. In pathology, hyperpigmentation is caused by an increasing in the amount of melanin. The purpose of this research was to prove the effect of administration of breadfruit leaves extract (Artocarpus altilis) cream prevented the increase of skin melanin in guinea pig (Cavia procellus) exposed to ultraviolet B and to prove the administration of breadfruit leaves extract (Artocarpus altilis) cream have the same effectiveness with 4% hydroquinone cream in preventing the increase of skin melanin in guinea pig (Cavia procellus) exposed to ultraviolet B. This study was a true experimental research using post test only control group design. The subjects were devided into three groups. Group 1 as a control group was treated by UVB exposure and basic cream. Group 2 was treated by UVB and 4% hydroquinone cream. Group 3 was treated by UVB and 3% breadfruit leaves extract cream. There was significant difference within control group compared with group 2 and 3 (p&lt;0,05). There was no significant difference within group 2 compared with group 3 (p&gt;0,05).The administration of 3% breadfruit leaves extract (Artocarpus altilis) cream prevented the increase of skin melanin in guinea pig (Cavia procellus) exposed to ultraviolet B. The administration of 3% breadfruit leaves extract (Artocarpus altilis<br />) cream had the same effectiveness with 4% hydroquinone cream.</p>


2020 ◽  
Vol 3 (2) ◽  
pp. 354-360
Author(s):  
Nafi'ah Nafi'ah ◽  
◽  
Mu’jizatillah Mu’jizatillah ◽  
Jhudi Bonosari Soediono

In last decade there has been an increase prevalence of overweight adolescents. Various strategies and products have been evaluated in effort to prevent and treat overweight using Green Tea Extract (GTE) and Senobi Breathing Exercise (SBE). However, the effect of GTE and SBE on decreasing adolescent body fat percentage in acute conditions when combined are unknown. The method used quasi experimental with control group design. The research conducted in Gymnasium laboratory of the Politeknik Unggulan Kalimantan in March 2020. The samples used were aged 18-21 years with BMI 25-29.9. Determination of samples using Federer's formula: (t-1) (n-1) ?15 obtained 4 treatment groups with a sample size of each group are 10 people that divided into: (a) overweight GTE; (b) overweight SBE; (c) overweight GTE and SBE; (d) overweight control . Measurement percentage of body fat in acute conditions shortly after treatment utilize Body Fat Monitor Scale GEA Medical EF 981. Statistical Test using Krusskall Wallis , the results obtained were P> 0.05, which indicates that there was no significant effect of GTE and SBE to reduce prevalence of adolescent body fat in acute conditions. Further research is needed to find out the correct protocol.


2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Rahmi Sofiana ◽  
Anak A.G.P. Wiraguna ◽  
Wimpie Pangkahila

Abstract: Ultraviolet B (UVB) ray may cause skin hyperpigmentation due to increased melanin level. Noni seeds (Morinda citrifolia) extract was a strong candidate as an antioxidant and whitening agent. This study was aimed to prove the effect of noni seeds extract cream in prevention the increase of melanin in UVB-exposed guinea pig (Cavia porcellus). This was a true experimental study using posttest only control group design. Subjects were 30 guinea pigs divided into 3 groups, each of 10 guinea pigs. Group 1, the control group, was treated with UVB exposure and basic cream; group 2 was treated with UVB and 4% noni seed cream; and group 3 was treated with UVB and 4% hydroquinone cream. A total of 390 mJ/cm2 ultraviolet B dosage was given for 2 weeks. Histopathological examination with Masson-Fontana staining was performed to evaluate the melanin areas with black color. The amount of melanin was calculated by the percentage of pixel areas of melanin and was compared with the pixels of all epidermal tissues. The results showed that the highest number of melanin was in group 1 (10.61±5.33%), while in group 2 was 1.4±0.65%, and in group 3 was 0.45±0.23%. There was a significant difference between the control group and group 2 as well as group 3 (P <0.05) whereas no significant difference was found between group 2 and group 3 (P >0.05). Conclusion: The 4% noni seeds extract (Morinda citrifolia) cream could prevent the increase of skin melanin in UVB-exposed guinea pig as effective as 4% hydroquinone cream.Keywords: noni seeds extract cream, melanin, ultraviolet B, guinea pigs Abstrak: Paparan sinar ultraviolet B (UVB) mengakibatkan terjadinya kelainan hiperpigmentasi yang ditandai dengan peningkatan jumlah melanin. Ekstrak biji mengkudu memiliki kombinasi zat aktif yang dapat bekerja sinergis dalam mencegah peningkatan jumlah melanin. Penelitian ini bertujuan untuk membuktikan efek pemberian krim ekstrak biji mengkudu (Morinda citrifolia) dalam mencegah peningkatan jumlah melanin kulit marmut (Cavia porcellus) yang dipapar sinar UVB. Jenis penelitian ialah eksperimental dengan randomized posttest only control group design menggunakan 30 ekor marmut jantan yang dibagi atas 3 kelompok, masing-masing 10 ekor. Kelompok 1 yaitu kelompok kontrol, diberi paparan sinar UVB dan diolesi krim dasar. Kelompok 2 diberi paparan sinar UVB dan krim ekstrak biji mengkudu 4%. Kelompok 3 diberi paparan sinar UVB dan krim hidrokuinon 4%. Dosis total UVB yaitu 390 mJ/cm2 diberikan selama 2 minggu. Pemeriksaan histopatologik jaringan kulit dengan pewarnaan Masson- Fontana. Jumlah melanin dihitung dengan persentase pixel luas area melanin dibandingkan dengan pixel seluruh jaringan epidermis. Hasil penelitian menunjukkan jumlah melanin pada Kelompok 1 sebesar 10,61±5,33%; pada kelompok 2 sebesar 1.4±0.65%, dan pada kelompok 3 sebesar 0,45±0,23%. Terdapat perbedaan bermakna antara kelompok 1 dengan kelompok 2 dan 3 (P <0,05). Perbandingan antara kelompok 2 dan 3 tidak berbeda bermakna dalam mencegah peningkatan jumlah melanin (P >0,05). Simpulan: Krim ekstrak biji mengkudu 4% dapat mencegah peningkatan jumlah melanin kulit marmut yang dipapar sinar UVB, dan memiliki efektifitas yang sama dengan krim hidrokuinon 4%. Kata kunci: krim ekstrak biji mengkudu, melanin, ultraviolet B, marmut


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