scholarly journals Aqueous Root Bark Extract of Daniellia oliveri (Hutch. & Dalz.) (Fabaceae) Protects Neurons against Diazepam-Induced Amnesia in Mice

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Galba Jean Beppe ◽  
Lea Blondelle Kenko Djoumessie ◽  
Eglantine Keugong Wado ◽  
Hervé Hervé Ngatanko Abaïssou ◽  
Balbine Kamleu Nkwingwa ◽  
...  
Keyword(s):  
Aqueous Extract ◽  
Reference Memory ◽  
Positive Control ◽  
Negative Control ◽  
Bark Extract ◽  
Radial Arm Maze ◽  
Control Group ◽  
Root Bark ◽  
Memory Errors ◽  
Daniellia Oliveri

Daniellia oliveri (DO) is a traditional medicinal plant used for the treatment of diseases such as inflammation, schizophrenia, and epilepsy in Nigeria, Kenya, Congo, and Cameroon. This study was carried out to evaluate the potential neuroprotection effect of the aqueous root bark extract of Daniellia oliveri against diazepam-induced amnesia in mice. Thirty-six adult male mice were distributed into six groups: the three test groups received Daniellia oliveri root bark extract (100, 200, and 300 mg/kg), the normal control group received distilled water (10 ml/kg), a positive control group received piracetam (150 mg/kg), and the negative control received diazepam (2.5 mg/kg). Learning and memory were evaluated using the radial arm maze and the T-maze. Biomarkers of oxidative stress were also quantified in mice brains. Statistical analyses were performed using two-way ANOVA followed by Tukey’s post hoc test. Daniellia oliveri root bark aqueous extract decreased the number of working memory errors and number of reference memory errors in amnesic mice evaluated in the radial arm maze. Also, an increase in glutathione activity and a decrease in malondialdehyde levels were noted in the hippocampi homogenate of the extract-treated mice as compared to the diazepam-demented but untreated group. Moreover, pretreatment with Daniellia oliveri aqueous root bark extract reversed the decrease in hippocampal cell density observed in the nontreated diazepam group. Taken together, these results suggest that the aqueous extract of DO leaves possesses antioxidant potential and might provide an opportunity for the management of neurological abnormalities in amnesic conditions.

scholarly journals Effect of Black Seed (Nigella sativa) and Uziza (Piper guineense) Leaf on the Histology of the Liver of Wistar Albino Rats

2019 ◽  
pp. 1-11
Author(s):  
Okoye Ngozi Franca ◽  
Ikiriko, Favour Ibiwari
Keyword(s):  
Aqueous Extract ◽  
Nigella Sativa ◽  
Positive Control ◽  
Negative Control ◽  
Positive Control Group ◽  
Control Group ◽  
Dependent Manner ◽  
Piper Guineense ◽  
The Third ◽  
Black Seed

Aim: This study was aimed at investigating the effects of aqueous extracts of both Nigella sativa and Piper guineense on the liver enzymes; alanine amino transferase (ALT), aspartate amino transferase (AST) and alkaline phosphatase (ALP). Also the effect of Nigella sativa and Piper guineense extracts on the histology of the liver of Wistar rat was also studied. Materials and Methods: A total of twenty five Wistar rats were used for the study. The animals were grouped into five groups, each having five animals. They were induced with sucrose and margarine to cause high sugar levels and hyperlipidemia respectively except the positive control group which was fed normal feed. The groups were: the positive control group, the negative control group which were induced without treatment, the uziza leaf group which were induced and were treated with 2 ml of aqueous extract of uziza leaf, the black seed group which were induced and were treated with 2 ml of aqueous extract of black seed, and the black seed and uziza group which were induced and were treated with 2ml of aqueous extract of black seed and 2 ml of aqueous extract of uziza leaf.  Results: The result showed that the extracts decreased the ALT and AST and ALP activities in the rats in a time dependent manner with highest decrease obtained on the third week of treatment with the extracts.  The ALT activity (U/L) on the third week of treatment showed for the, negative control (64.48 ± 0.22), uziza leaf (28.82 ± 0.12), black seed (32.65 ± 0.02), black seed and uziza leaf (16.04 ± 0.02) (p≤0.05). The decrease in activity for AST levels (U/L) on the third week of treatment, showed for the negative control (58.00 ± 0.02), uziza leaf (11.00 ± 0.01), black seed (12.00 ± 0.02), black seed and uziza leaf (8.00 ± 0.02). Conclusion: It can be concluded that both uziza leaf and black seed have hepatoprotective effect on the liver.

scholarly journals STUDY OF THE POSSIBLE ANTIHYPERTENSIVE AND HYPOLIPIDEMIC EFFECTS OF AN HERBAL MIXTURE ON L-NAME-INDUCED HYPERTENSIVE RATS

2016 ◽  
Vol 9 (5) ◽  
pp. 85 ◽  
Author(s):  
Doha Aboubaker ◽  
Souad E El-gengaihi ◽  
Mouchira Abdel Salam ◽  
Bassant Mm Ibrahim ◽  
Seham El-batran
Keyword(s):  
Blood Pressure ◽  
Aqueous Extract ◽  
Medical Condition ◽  
Negative Control Group ◽  
Positive Control ◽  
Negative Control ◽  
Chronic Medical Condition ◽  
Control Group ◽  
Hypertensive Rats ◽  
Improve Blood Pressure Control

ABSTRACTObjective: Hypertension is a chronic medical condition. Diet can improve blood pressure control and decrease the risk of health complication.Methods: In this study, four plants: Roselle, Marjoram, Chamomile, and Doum were extracted by water. Equal portions of them were mixed. Lethaldose 50% of the mixture was assayed; the dose which did not cause any mortality was 266.94 mg/100 g body weight. Animals were classified into fivegroups: Negative control group, positive control group where hypertension was induced by L-name, two groups treated with two doses of the mixture,and a group treated with prazosin as a standard treatment. Treatment of hypertensive rats continued for 4 successive weeks.Results: Treatment with the mixture showed a significant reduction in blood pressure of hypertensive rats, as well as serum cholesterol, low-densitylipoprotein-cholesterol, and urea levels when compared to positive control group.Conclusion: The results obtained suggest that the aqueous extract is efficient as an antihypertensive and hypolipidemic agent.Keywords: Rats, Aqueous extract, Hypertension, Hyperlipidemia, L-name.

scholarly journals Effects of Aqueous Extract of Vigna unguiculata Seedlings Against Doxorubicin-Induced Cardiotoxicity and Kidney damage In Female Albino Rats

2016 ◽  
Vol 1 (04) ◽  
Author(s):  
Olatunde A. Oseni ◽  
Ademola S. K. Idowu ◽  
Aminat Isah
Keyword(s):  
Body Weight ◽  
Aqueous Extract ◽  
Vigna Unguiculata ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Albino Rats ◽  
Group 2 ◽  
Wistar Albino Rats ◽  
Enzyme Markers

Doxorubicin is an anthracycline drug which is believed to cause immediate damage to myocardial cells by free radical generation in the cause of treatment of cancer. This study was however aimed to investigate the effects of the aqueous extract of the seedlings of Vigna unguiculata on heart, kidney as well as lipid profile disorders caused by this drug on female Wistar albino rats. Fifteen female Wistar albino rats were divided into three groups. Group 1 animals served as normal positive control; Group 2 animals served as negative control which were treated with 0.5mL of (20mg/kg body weight doxorubicin) while Group 3 animals were treated with 0.5mL each of 20mg/kg body weight doxorubicin and 10% aqueous extract of seedlings of Vigna unguiculata. Some enzyme markers and lipid contents were determined. The results of the study showed an increase in the activities of plasma ALP and AST after treatment with the drug except in the heart for AST which showed a significant reduction, while treatment with the extract brought about a decrease in the plasma and the organs except for kidney AST. The ALT on the other hand showed slight increase in the plasma with a decrease in the kidney and heart after treatment with the drug as the treatment with the extract tend to restore it to the control in both cases, there was increased plasma and kidney but reduced heart HDL-C after treatment with the drug which was observed to be restored to control after treatment with extract in both situations. The triglyceride and total cholesterol did not show similar trend in the plasma and the studied organs. The LDL-C was also observed to be increased in both plasma and organs after the treatment with the drug which later reduced significantly towards the control after the administration of the sprout extract. The present study has shown that the doxorubicin has damaging effects on both kidney and heart tissues while the sprouts extract produce a restoration to the normal in both organs.

scholarly journals UJI EFEK ANALGESIK EKSTRAK KULIT BATANG POHON MATOA (Pometia pinnata) PADA MENCIT (Mus musculus)

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Rafly F. Lumintang ◽  
Jane Wuisan ◽  
Pemsy M. Wowor
Keyword(s):  
Mus Musculus ◽  
Analgesic Effect ◽  
Negative Control Group ◽  
Treated Group ◽  
Positive Control ◽  
Negative Control ◽  
Bark Extract ◽  
Control Group ◽  
Group Iii ◽  
Group I

Abstract: Pain is an unpleasant sensation that derives from the complex neurochemical processes in the central and peripheral nervous systems. Side effects of drugs inter alia opioids and NSAIDs can cause serious disorders, therefore, it is necessary to find and develop other effective analgesic drugs with low toxicity. In Indonesia, matoa (Pometia pinnata) is known as a typical plant in Papua especially in West Papua. In some countries, parts of matoa plants are used as traditional medicine. This study aimed to determine the analgesic effect of matoa bark extract (Pometia pinnata) on mice Mus musculus. This was an experimental study. Nine male mice weighed 30 g were divided into 3 groups, each consisted of 3 mice. Group I, the negative control group, was given aquadest; group II, the positive control group, was given aspirin solution; and group III, the treated group, was given matoa bark extract. Analgesic effect was determined by counting the mice movements (licking their back legs or jumping) during 1 minute in a beaker with a temperature of 550C. The results showed that after 30 minutes the average number of movements of the treated group decreased from 22 times to 19.3 times, and continued to decrease until 1 movement after 120 minutes. Conclusion: Matoa bark extract showed analgesic effect on mice Mus musculus.Keywords: analgesic effect, matoa bark, miceAbstrak: Nyeri adalah sensasi yang tidak menyenangkan yang berasal dari proses neurokimia kompleks di sistem saraf pusat dan perifer. Opioid dan golongan AINS dapat menimbulkan efek samping yang cukup berat; oleh karena itu, diperlukan obat analgesik yang efektif dengan toksisitas rendah. Di Indonesia, matoa (Pometia pinnata) dikenal sebagai tanaman khas Papua terutama Papua Barat. Di beberapa negara, bagian-bagian dari tanaman matoa telah digunakan sebagai obat tradisional. Penelitian ini bertujuan untuk mengetahui efek analgesik ekstrak kulit batang pohon matoa (Pometia pinnata) pada mencit Mus musculus. Penelitian ini menggunakan metode eksperimental. Sembilan ekor mencit jantan dengan berat rata-rata 30 g dibagi atas 3 kelompok hewan uji yang masing-masing terdiri dari 3 ekor mencit. Kelompok I yaitu kelompok kontrol negatif diberikan akuades; kelompok II yaitu kelompok kontrol positif diberikan larutan aspirin; dan kelompok III yaitu kelompok perlakuan diberikan ekstrak kulit batang matoa. Efek analgesik berupa jumlah gerakan mencit selama 1 menit saat diletakan di dalam beker dengan suhu tetap 550C. Gerakan yang dihitung berupa gerakan menjilat kaki belakang atau meloncat. Hasil penelitian menunjukkan bahwa pada menit ke-30 terjadi penurunan rerata jumlah respon gerakan mencit dari 22 kali menjadi 19,3 kali yang terus berkurang hingga menit ke-120 dimana hanya terdapat 1 gerakan. Simpulan: Ekstrak kulit batang pohon matoa memiliki efek analgesik pada mencit Mus musculus.Kata kunci: efek analgesik, kulit batang matoa, mencit

scholarly journals The Imidazoline Receptor Antagonists Idazoxan and Efaroxan Improve the Spatial and Reference Memory in Rats

2019 ◽  
Vol 69 (12) ◽  
pp. 3577-3580
Author(s):  
Gabriela Rusu-Zota ◽  
Andrei Luca ◽  
Gabriela Dumitrita Stanciu ◽  
Victorita Sorodoc ◽  
Maria Magdalena Leon-Constantin ◽  
...  
Keyword(s):  
Working Memory ◽  
Reference Memory ◽  
Radial Arm Maze ◽  
Control Group ◽  
Distilled Water ◽  
Memory Errors ◽  
Receptor Antagonists ◽  
Term Memory ◽  
Imidazoline Receptor ◽  
Group I

Experimental studies and clinical trials revealed the complex interconnections between imidazoline system and various other mediators such as epinephrine, norepinephrine; thus, explain their involvement in the pathophysiological mechanisms of different motor, behavioral and cognitive disturbances. In this study, we tested the influence induced by idazoxan and efaroxan on the cognitive performances in rats. Groups of 6 adult male Wistar rats were treated intraperitoneally according to the following protocol: group I (Control): distilled water 0.3 ml/100g; group II (IDZ): 3 mg/kg idazoxan and group III (EFR): 1 mg/kg efaroxan. The effects of the imidazoline receptor antagonists on the rats cognitive functions were assessed using the radial-arm maze, in order to count the time spent into the arms, the number of baited arms visited, but previously explored (working memory errors); the time taken to consume all baits and the number of entering in non-baited arms (reference memory errors). The data were expressed as mean +/- standard deviation, and statistically analyzed using SPSS version 17.0 Software for Windows, followed by ANOVA one-way method. The administration of IDZ, as well as of EFR was accompanied by a substantial diminution in the number of working memory errors, and the period of time to consume all baits, statistically significant (p[0.01) compared to control group. The use of these two imidazoline receptors antagonists resulted in a considerable decrease in the reference memory errors number, statistically significant (p[0.01) compared to the group treated with distilled water. The influence of IDZ on the evaluated parameters was more accentuated than the effects induced by EFR in all sessions of testing, in this behavioral experimental model. Our findings indicate that treatment with both imidazoline receptor antagonists, idazoxan and efaroxan was associated by a facilitation of the short-term memory retention, an enhancement of discriminative spatial learning, and an improvement of long-term memory performance in radial arm maze in rats.

scholarly journals Effects of Black Seed (Nigella sativa) and Uziza Leaf (Piper guineense) on Electrolytes, Urea and Creatinine of Wistar Albino Rats

2019 ◽  
pp. 1-10
Author(s):  
Okoye Ngozi Franca ◽  
Igwilo, Elvis Ikenna
Keyword(s):  
Aqueous Extract ◽  
Wistar Rats ◽  
Nigella Sativa ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Albino Rats ◽  
Piper Guineense ◽  
The Third ◽  
Black Seed

Aim: For centuries, plant and plant products have played a pivotal role in medication. This study evaluated the effect of aqueous extract of black seed (Nigella sativa) and uziza leaf (Piper guineense) on electrolytes, urea and creatinine of Wistar rats. Materials and Methods: Twenty-five Wistar rats were used for the study; the rats were arranged into five groups with five rats each. Sucrose and margarine were used to induce hyperglycemia and hyperlipidemia respectively on the rats with the exception of the rats in the positive control group.  The rats in the negative control were induced using the sucrose and margarine but were not treated using the aqueous extracts. The rats in the uziza group were treated with 2 ml of uziza aqueous leaf extract, while the rats in the black seed group were treated with 2 ml of black seed aqueous extract. The rats in the black seed & uziza leaf group were treated with 2ml of the combined aqueous extract. Results: The results showed that the extracts had a decreasing effect which was time dependent on the electrolytes. The highest decrease was obtained on the third week of feeding compared to the control (P=.05). The sodium levels (mmol/L) showed for the negative control (198.23 ± 1.96), positive control (108.15 ± 1.60), uziza leaf (98.28 ± 4.17), black seed (101.67 ± 4.24), black seed & uziza (90.83 ± 2.14).  The decrease for potassium levels (mEq/L) showed for the negative control (0.90 ± 0.06), positive control (0.05 ± 0.10), uziza leaf (0.07 ± 0.18), black seed (0.06 ± 0.19), black seed & Uziza (0.05 ± 0.10). Furthermore, the extracts also had a reducing effect on urea and creatinine levels with the highest reduction obtained on the third week (p=0.05).  The urea levels (mmol/L) showed for the negative control (26.84 ± 0.05), positive control (15.15 ± 1.20), uziza leaf (12.83 ± 0.98), black seed (12.16 ± 2.01), black seed & uziza (11.48 ± 1.78). The extracts also decreased creatinine levels (mmol/L) with the negative control (284.58 ± 0.33), positive control (182.73 ± 3.67), uziza leaf (194.16 ± 18.30), black seed (167.34 ± 14.66), black seed & uziza (174.46 ± 10.66).  Conclusion: The extracts significantly decreased the elevated electrolytes levels and therefore uziza leaf and black seed can be used to restore kidney function.

scholarly journals The Effect of Cinnamon (Cinnamomum burmanii) Aqueous Extract on Pancreas Structure of Diabetic Mice (Mus musculus) Strain Balb-C

2015 ◽  
Vol 15 (2) ◽  
pp. 69
Author(s):  
Ika Dewi Kusumaningtyas ◽  
Susantin Fajariyah ◽  
Eva Tyas Utami
Keyword(s):  
Treatment Group ◽  
Effective Dose ◽  
Aqueous Extract ◽  
Mus Musculus ◽  
Negative Control Group ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Diabetic Mice ◽  
Paraffin Method

The objectives of this study were to observe effect and  the effective dose of cinnamon (Cinnamomum burmanii) aqueous extract on pancreas structure of strain Balb-C mice (Mus musculus) diabetic after alloxan exposure. A total of 30 strains Balb-C mice (Mus musculus L.) were divided into 5 groups. Negative control group was not induced  by alloxan and a positive control group was induced alloxan 0,15 mg/g bw intraperitoneally for 9 days. The treatment group was divided into 3 groups was induced alloxan 0,15 mg/g bw and given an aqueous  extract of cinnamon at a dose of 0,73 mg/g bw; 1,09 mg/g bw and 1,45 mg/g bw orally for 7 days. Mice were dissected pancreas histhological taken using paraffin method and Haematoxylin-eosin (HE) stain. The result showed giving aqueous extract of cinnamon gave a strong effect in the repairing of pancreas structure after giving the alloxsan and the most effective aqueouse xtract of cinnamon with dose of 0,73 mg/g bb was able to repair the structure of mice's pancreas after giving the alloxan. Keywords: Cinnamon,  pancreas structur,diabetic mice

scholarly journals Kalanchoe Pinnata aqueous extract has the potential to improve haematological profile and fatigue status of mice subjected to Free Swimming Endurance Test

2021 ◽  
Vol 17 (2) ◽  
pp. 063-075
Author(s):  
Orelien Sylvain Mtopi Bopda ◽  
Odine Perez Maloba ◽  
Mbigah Pascal Monju ◽  
Germain Sotoing Taiwe ◽  
Théophile Dimo
Keyword(s):  
Aqueous Extract ◽  
Cardiovascular Effects ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Serum Triglycerides ◽  
Creatine Kinase Mb ◽  
Haematological Profile ◽  
Kalanchoe Pinnata

Introduction: Kalanchoe pinnata extracts have been shown to possess beneficial cardiovascular effects, analgesic and myorelaxant activities. This study aimed at evaluating the haematological and anti-fatigue effects of its aqueous extract. Materials and methods: This was an in vivo pharmacological experiment, carried out in the Laboratory of Zoology, University of Buea, from January to May 2018. A total of 48 mice were subjected to a 90mins/day-free endurance swimming test for 14 days. Two groups of mice received distilled water and 12% NaCl solution, respectively. Five groups received the plant extract (25, 50, 100 and 200 mg/kg/day) and 200mg/kg/day+NaCl. One positive control group received 5% Vitamin C (1.97mg/kg/day). All administrations were by gavage. Maximum swimming time, glycaemia, lactatemia, uremia, triglyceridemia, haematological indices, tissue glutathion peroxidase, malondialdehyde, glucose and creatine kinase-MB in the heart or gastrocnemius muscle were measured. Results: K. pinnata (50 and 100mg/kg/day) induced a non-significant increase of the swimming duration, compared to neutral control. However, the 12%NaCl group recorded a significant (P<0.05) increase. In the blood, NaCl induced a decrease of platelets that was significantly reverted by the extract in the 200mg/kg+NaCl group. The extract prevented the increase of the level of CK-MB in NaCl group and decreased the serum triglycerides, glucose, urea nitrogen and Lactate levels. In the tissues, MDA and CK-MB levels significantly increased (P<0.001) in the negative control. These increases were significantly (P<0.001) prevented by K. pinnata (200mg/kg/day). Conclusions: Significant biochemical variations support the hypothesis that K. pinnata could be used to delay exercise induced fatigue.

The Comparison of Ostecyte in the Pressure area and Tension area on Tooth Movement Because of Hyperbaric Oxygen Therapy

DENTA ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Arya Barahmanta ◽  
Muhammad Faizal Winaris ◽  
Pambudi Raharjo
Keyword(s):  
Hyperbaric Oxygen ◽  
Oxygen Therapy ◽  
Tooth Movement ◽  
Bone Remodelling ◽  
Orthodontic Tooth Movement ◽  
Negative Control Group ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Pressure Area

<p><strong><em>Background:</em></strong><em> Orthodontic tooth movement is a </em><em>interaction prosess</em><em> of resorption and deposition of bone remodeling. Orthodontic tooth movement by mechanical strength causes changes in alveolar bone. Osteocyte is an essential cell to respond bone remodelling. Hyperbaric Oxygen Therapy affects production of osteocyte because it can release Reactive Oxygen Species (ROS) and Nitrid Oxide (NO).  <strong>Purpose: </strong>To determine the difference number  of osteocyte in pressure and tension area during tooth movement by adjuvant of Hyperbaric Oxygen 2,4 ATA during 7 days starting on day 8 to day 14. <strong>Materials and Methods</strong>: This research used Completery Randomized Control Group Post Test Only Design. 36 cavia cobaya (male)  were divided into 3 groups randomly : the negative control groups, positive control group, and treatment group. Preparat staining used Hematoxylin Eosin (HE) and calculated on microscop 1000x with 20 field of view. Data analyses used one way ANOVA and LSD test then compared each area by using paired T test. <strong>Result:</strong> The data showed that the treatment group (P=10,67) tension area has the highest number of osteocyte than  negative control group (K-=3,67), positive control (K+=7,42). In the pressure area showed that negative control group (K-=5,00) has the highest  than positive control group (K+=3,83) and treatment (P=3,25). <strong>Conclusion: </strong>Therapy HBO 2,4 ATA 7 days starting on day 8 to day 14 is could increase osteocyte in the tissue to stimulate process of bone remodelling.</em></p><pre><strong> </strong></pre><p><strong><em>Keywords:</em></strong><em> Hyperbaric Oxygen, Tooth movement, Bone remodeling, </em><em>Osteocyte</em><em></em></p><p><em> </em></p><p><strong><em>Correspondence:</em></strong><em> </em><em>Arya Brahmanta</em><em>, Department of Orthodonty, Faculty of Dentistry, Hang Tuah University, Arif Rahman Hakim 150, Surabaya, Phone 031-5945864, Email:</em><em> </em><a href="mailto:[email protected]"><em>arya.brahmanta</em><em>@</em><em>hangtuah.ac.id</em></a></p>

In vitro and in vivo Assessment of Silver Nanoparticles Against Clostridium botulinum Type A Botulinum

2019 ◽  
Vol 16 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Mohammad Aminianfar ◽  
Siavash Parvardeh ◽  
Mohsen Soleimani
Keyword(s):  
Silver Nanoparticles ◽  
Botulinum Toxin ◽  
Clostridium Botulinum ◽  
Lethal Dose ◽  
Type A ◽  
Positive Control ◽  
Negative Control ◽  
Laboratory Animals ◽  
Control Group ◽  
Nano Silver

Background: Clostridium botulinum causes botulism, a serious paralytic illness that results from the ingestion of a botulinum toxin. Because silver nanoparticle products exhibit strong antimicrobial activity, applications for silver nanoparticles in healthcare have expanded. Therefore, the objective of the current study was to assess a therapeutic strategy for the treatment of botulism toxicity using silver nanoparticles. Methods: A preliminary test was conducted using doses that produce illness in laboratory animals to determine the absolute lethal dose (LD100) of botulinum toxin type A (BoNT/A) in mice. Next, the test animals were divided into six groups containing six mice each. Groups I, II and III were the negative control (botulinum toxin only), positive control-1 (nano-silver only) and positive control-2 (no treatment), respectively. The remaining groups were allocated to the toxin that was supplemented with three nano-silver treatments. Results: The mortality rates of mice caused by BoNT/A significantly reduced in the treatment groups with different doses and injection intervals of nano-silver when compared to the negative control group. BoNT/A toxicity induced by intraperitoneal injection of the toxin of Clostridium botulinum causes rapid death while when coupled with nano-osilver results in delayed death in mice. Conclusion: These results, while open to future improvement, represent a preliminary step towards the satisfactory control of BoNT/A with the use of silver nanoparticles for human protection against this bioterrorism threat. Further study in this area can elucidate the underlying mechanism for detoxifying BoNT/A by silver nanoparticles.

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