scholarly journals Ivermectin and albendazole withdrawal period in goat milk

2019 ◽  
Vol 20 ◽  
Author(s):  
Patrícia Silva Santos ◽  
Jurandir Ferreira da Cruz ◽  
José Soares dos Santos ◽  
Vanessa Daniele Mottin ◽  
Milton Rezende Teixeira Neto ◽  
...  
Keyword(s):  
High Performance ◽  
Goat Milk ◽  
Withdrawal Period ◽  
Milk Samples ◽  
Native Pasture ◽  
Before And After ◽  
The Mean ◽  
Antiparasitic Treatment

SUMMARY Theaimthis study was to determine the excretion profile of albendazole and ivermectin residues in milk from goats submitted to antiparasitic treatment. Twenty-four Brazilianmongrel lactating and pluriparous goats, maintained extensively on native pasture were orally treatedwith albendazole or ivermectin. Milk samples were collected before and after vermifuges application, in the days 0, 2, 3 e 4 to albendazole and 0, 3, 7, 14, 21, 28, 35 and 42 to ivermectin. The vermifuges residues were detected by high performance liquid cromatography with ultravioletdetector. The amount of residues contained in themilk was decreasing in function of time. The mean daily rates of decrease of albendazole residues were 63.34%, 40.18 and 100.0%, from the 2ndto the 4thday, respectively; on the 3rdday after treatment, 50% of the samples showed concentrations ≥ 47.61 μg.mL–1, and on the 4thday, no sample had albendazole residue. The amount excreted of ivermectin was similar between the 3rdand 21stday when all samples presented values ≥ 51.90 μg.mL-1; on the 35th day, 50% of the samples showed values above of recommended levels, and on the 42nd day, no sample had detectable ivermectin residue. In conclusion, the milk of Brazilian mongrel goats treated orally with albendazole or ivermectin does not contain its respective residues in detectable amounts from the 4th and 42nddays, respectively, after antiparasitic treatment.

scholarly journals Proteolytic and lipolytic potential of Pseudomonas spp. from goat and bovine raw milk

2018 ◽  
Vol 38 (8) ◽  
pp. 1577-1583 ◽  
Author(s):  
José C. Ribeiro Júnior ◽  
Pedro I. Teider Junior ◽  
André L.M. Oliveira ◽  
Edson A. Rios ◽  
Ronaldo Tamanini ◽  
...  
Keyword(s):  
Bovine Milk ◽  
Goat Milk ◽  
Raw Milk ◽  
Species Level ◽  
Cow Milk ◽  
Production Potential ◽  
Gram Negative ◽  
Pseudomonas Spp ◽  
Milk Samples ◽  
The Mean

ABSTRACT: Pseudomonas, the main genus of gram-negative microorganisms isolated from milk, is psychrotrophic, biofilm-forming, and thermo-resistant deteriorating enzyme producers. The aim of this study was to quantify Pseudomonas spp. in goat’s and cow’s milk produced in the Paraná state, Brazil, to evaluate the deteriorating activity of the isolates at mesophilic and psychrotrophic conditions and to identify, at the species level, the isolates with alkaline metalloprotease (aprX gene) production potential. Microbiological, biochemical and molecular methods were used for isolating, confirming and identifying of isolates. The mean counts were 1.6 (±6.3)x104 and 0.89(±3)x102 CFU/mL for goat and bovine milk samples, respectively, immediately after milking. Of the Pseudomonas colonies isolated from goat milk (n=60), 91.7% showed proteolytic potential when incubated at 35°C/48 h and 80% at 7°C/10 days, and lipolytic potential was observed in 95% of the isolates incubated in mesophilic and 78.3% at refrigeration conditions. From the isolates of bovine milk (n=20), 35% showed proteolytic activity only when incubated at 35°C/48 h, and lipolytic potential was observed in 25% of the isolates incubated at 7°C/10d and 35°C/48h. It was observed that 83.3% and 25% of the isolates genetically confirmed as Pseudomonas spp. of goat and bovine milk showed the potential for alkaline metalloprotease production, with the species P. azotoformans, P. koreensis, P. gessardii, P. monteilii and P. lurida being the most frequent in goat milk and P. aeruginosa the only species identified in cow milk.

scholarly journals Intramammary treatment with gentamicin in lactating cows with clinical and subclinical mastitis

2016 ◽  
Vol 36 (4) ◽  
pp. 283-289 ◽  
Author(s):  
Thamires Martins ◽  
Adriana F. Rosa ◽  
Lívia Castelani ◽  
Mariana S. de Miranda ◽  
Juliana R. P. Arcaro ◽  
...  
Keyword(s):  
Public Health Problem ◽  
Subclinical Mastitis ◽  
Multidrug Resistant ◽  
Penicillin G ◽  
Withdrawal Period ◽  
Milk Samples ◽  
Lactating Cows ◽  
Antimicrobial Residues ◽  
Before And After ◽  
Staphylococcus Spp

Abstract The study evaluated the microbiological profile of milk samples collected before and after mastitis treatment with gentamicin and investigated biofilms production and antimicrobial susceptibility of Staphylococcus spp. isolated. The presence of gentamicin residues in milk after the recommended withdrawal period was also evaluated. Antimicrobial residues were analyzed by Delvotest® SP NT over a period of 12 days beginning after 24 hours the last gentamicin application. Some of Staphylococcus spp. isolates were biofilm producers (19.05%). Staphylococcus spp. showed high levels of resistance to neomycin (16.95%), penicillin G (10.17%), and ampicillin (10.17%). Multidrug resistance to all antibiotics tested was observed in 1.69% of the Staphylococcus spp. isolates. Among 1440 mammary quarter milk samples 24.95% presented gentamicin residues after the withdrawal period. Gentamicin residues were also detected in 3.8% of samples from calibrated glass recorder jar (n=383) 4.1 days after treatment. The indiscriminate use of antibiotics may lead to the emergence of multidrug-resistant strains as well as increasing the risk of presence of residues of these drugs in milk. These problems affect the milk quality and may become a public health problem.

scholarly journals Clearance Rate and BP-ANN Model in Paraquat Poisoned Patients Treated with Hemoperfusion

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Lufeng Hu ◽  
Guangliang Hong ◽  
Jianshe Ma ◽  
Xianqin Wang ◽  
Guanyang Lin ◽  
...  
Keyword(s):  
Clearance Rate ◽  
High Performance ◽  
Input Data ◽  
Ann Model ◽  
Output Data ◽  
Before And After ◽  
High Prediction ◽  
The Mean ◽  
Clearance Model ◽  
Backpropagation Artificial Neural Network

In order to investigate the effect of hemoperfusion (HP) on the clearance rate of paraquat (PQ) and develop a clearance model, 41 PQ-poisoned patients who acquired acute PQ intoxication received HP treatment. PQ concentrations were determined by high performance liquid chromatography (HPLC). According to initial PQ concentration, study subjects were divided into two groups: Low-PQ group (0.05–1.0 μg/mL) and High-PQ group (1.0–10 μg/mL). After initial HP treatment, PQ concentrations decreased in both groups. However, in the High-PQ group, PQ levels remained in excess of 0.05 μg/mL and increased when the second HP treatment was initiated. Based on the PQ concentrations before and after HP treatment, the mean clearance rate of PQ calculated was 73 ± 15%. We also established a backpropagation artificial neural network (BP-ANN) model, which set PQ concentrations before HP treatment as input data and after HP treatment as output data. When it is used to predict PQ concentration after HP treatment, high prediction accuracy (R=0.9977) can be obtained in this model. In conclusion, HP is an effective way to clear PQ from the blood, and the PQ concentration after HP treatment can be predicted by BP-ANN model.

scholarly journals Determination of antibacterial residues in raw cattle beef in some selective areas of Mymensingh District during Eid-ul-Adha

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
M. Comruzzaman ◽  
A. K. M. H. Kabir ◽  
A. Nahar ◽  
N. Hassan ◽  
M. M. Alam
Keyword(s):  
Public Health ◽  
High Performance ◽  
Health Concern ◽  
Animal Origin ◽  
Withdrawal Period ◽  
Drug Residue ◽  
The Mean ◽  
Public Health Hazards ◽  
Antibiotic Residue

Background: Antibiotic residue in foods of animal origin is a growing public health concern in recent time. Indiscriminate use of antibacterials in food animal production and ignoring proper withdrawal period may lead to drug residue in milk, beef and eggs. The present study was conducted to detect antibacterial residues in raw cattle beef samples. Methods: One hundred cattle beef samples were collected from four Upazillas of Mymensingh named Gofargaon, Fulpur, Dhobaura and Bhaluka, Bangladesh during the period of Eid-ul-adha in 2018. The residue of two most commonly used antibacterials named oxytetracycline (OTC) and sulphadimidin (SDI) were quantified by using High Performance Liquid Chromatography (HPLC). Results The mean concentration of OTC and SDI residues in raw beef samples were 0.145 µg/ml and 0.094 µg/ml and the concentration ranged from 0.104-0.435 µg/ml and 0.083-0.357 µg/ml, respectively. About 59% and 43% beef samples contained some levels of OTC and SDI residue, respectively. Importantly, 19% and 12% beef samples exceeded maximum residue limit (MRL) for OTC and SDI, respectively. Conclusions: The results indicate that drug residue is common in raw beef samples and a good proportion of beef samples exceeded MRL. Farmer’s education to ensure rational use of antibacterials and to follow withdrawal period may help control this public health hazards in Bangladesh context.

Phase I trial of low-dose, prolonged continuous infusion fluorouracil plus interferon-alfa: evidence for enhanced fluorouracil toxicity without pharmacokinetic perturbation.

1993 ◽  
Vol 11 (8) ◽  
pp. 1609-1617 ◽  
Author(s):  
J A Sparano ◽  
S Wadler ◽  
R B Diasio ◽  
R Zhang ◽  
Z Lu ◽  
...  
Keyword(s):  
High Performance ◽  
Low Dose ◽  
Objective Response ◽  
Circadian Variation ◽  
Interferon Alfa ◽  
Pharmacokinetic Data ◽  
Ifn Alpha ◽  
Before And After ◽  
The Mean ◽  
Adenocarcinoma Of The Pancreas

PURPOSE To determine the maximum-tolerable dose (MTD) of fluorouracil (5-FU) administered as a low-dose, prolonged continuous intravenous infusion (PCI) plus interferon-alfa (IFN-alpha) that would permit treatment for at least 28 consecutive days, and to determine the effect of IFN-alpha on 5-FU pharmacokinetics. PATIENTS AND METHODS Twenty-six assessable patients with advanced cancer received low-dose PCI 5-FU (150, 200, 250, and 300 mg/m2/d) plus IFN-alpha, 5 x 10(6) IU/m2 administered subcutaneously (SC) at hour 48 of the 5-FU infusion, then thrice weekly thereafter in cohorts of at least three patients. Treatment continued until treatment-limiting toxicity (TLT) developed, such as mucositis, diarrhea, or fatigue. Escalation to the next 5-FU dose level occurred if none of three or zero to two of six patients developed TLT before day 28. Quantitation of plasma 5-FU concentration by high-performance liquid chromatography was performed in 15 patients. Data were standardized using the Cosinor method and compared before and after IFN-alpha administration using the paired t test. RESULTS The mean number of days of continuous 5-FU therapy for patients receiving 150, 200, 250, and 300 mg/m2/d of 5-FU plus IFN alfa-2a (IFN-alpha 2a) was 75, 54, 37, and 22 days, respectively. The MTD of PCI 5-FU by our criteria that could be combined with IFN-alpha was 250 mg/m2/d. Comparison of the standardized pharmacokinetic data showed no significant effect of IFN-alpha on plasma 5-FU concentration, and no alteration of the normal circadian variation in plasma 5-FU concentration that was evident before IFN-alpha administration. Objective response occurred in patients with adenocarcinoma of the pancreas (n = 3), kidney (n = 2), and lung (n = 1). CONCLUSION IFN-alpha substantially enhanced the gastrointestinal toxicity of low-dose PCI 5-FU without affecting 5-FU pharmacokinetics, contrary to previous reports using alternative 5-FU schedules in which IFN-alpha-related enhancement of 5-FU toxicity was attributable to reduced 5-FU clearance. Our findings suggest that under certain conditions, mechanisms other than altered 5-FU pharmacokinetics may be responsible for the ability of IFN-alpha to enhance the toxic effects of 5-FU.

scholarly journals RFA Lowers IDO Activity and Slows Non-Ablated Lesion Growth in Multifocal Hepatic Carcinoma

2021 ◽  
Author(s):  
Kailin Wang ◽  
Jun Mao ◽  
Siyue Mao ◽  
Xicheng Wang ◽  
Wanlin Tan ◽  
...  
Keyword(s):  
Growth Rate ◽  
Treatment Group ◽  
High Performance ◽  
Controlled Study ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Hepatic Carcinoma ◽  
Before And After ◽  
Lesion Growth ◽  
The Mean

Abstract Background: The aim of this study was to determine whether radiofrequency ablation (RFA) could activate immunity and slow non-ablated lesion growth in multifocal hepatic carcinoma.Methods: We performed a retrospective study on patients with multifocal hepatic carcinoma and assessed the non-ablated lesion growth rate between patients who received RFA and those who did not. In self-controlled study, before and three weeks after RFA, blood samples were collected from patients who received RFA to allow for comparisons of the alpha-fetoprotein (AFP) level, indoleamine 2,3-dioxygenase (IDO) concentration as assessed by enzyme-linked immunosorbent assay (ELISA) and IDO activity as assessed by high-performance liquid chromatography (HPLC).Results: A total of 66 patients were included in the retrospective analysis: there were 46 (69.7%) patients in the treatment group and 20 (30.3%) patients in the control group. The mean growth rate of non-ablated tumors was 0.0291 ± 0.0965 mm/d in the treatment group and 0.0947 ± 0.0754 mm/d in the control group (P = 0.001). The mean concentrations of IDO before and after RFA were 15.57±4.06 ng/ml and 7.53±1.56 ng/ml in 45 eligible patients, and this difference was significant (P = 0.034). The mean IDO activity values were 29.7±22.03 and 25.25±1.75 before and after RFA, respectively (P = 0.031). AFP decreased significantly after RFA, but there was no significant correlation between the decrease in AFP and the decrease in IDO concentration and activity.Conclusions: RFA may induce abscopal effects in hepatic carcinoma patients, manifested by a decrease in IDO concentration and activity and a slowed growth rate in non-ablated lesions.

Occurrence of Aflatoxin M1 in Pasteurized Milk of the School Milk Project in Thailand

2009 ◽  
Vol 72 (8) ◽  
pp. 1761-1763 ◽  
Author(s):  
SUTHEP RUANGWISES ◽  
NONGLUCK RUANGWISES
Keyword(s):  
Rainy Season ◽  
High Performance ◽  
Aflatoxin M1 ◽  
Milk Products ◽  
Pasteurized Milk ◽  
Milk Samples ◽  
Regulatory Limits ◽  
The Status ◽  
The Mean ◽  
Quality Of Milk

Concentrations of aflatoxin M1 (AFM1) were determined in 150 pasteurized milk samples from the School Milk Project in Thailand. Milk samples were collected from 50 schools in the Central region of Thailand in three seasons: summer (May to June 2006), the rainy season (August to September 2006), and winter (December 2006 to January 2007). AFM1 was isolated by using an immunoaffinity column and quantified by high-performance liquid chromatography. All of the 150 pasteurized milk samples were contaminated with AFM1, and the concentrations were within the U.S. regulatory limit of 0.5 μg/liter. The highest concentration of AFM1 found in school milk samples was 0.114 μg/liter. The mean concentration of AFM1 in milk samples collected in winter was significantly higher than the mean concentrations found in the rainy season and summer. Further monitoring of school milk to evaluate the status of contamination of AFM1 is necessary, with a special emphasis on samples collected in the rainy season and winter. Thailand is one of several countries that have no regulatory limits for AFM1 in milk and milk products. The results of this study suggest that safety limits for AFM1 are needed for regulating and ensuring the quality of milk and milk products in Thailand.

The Effect of Boiling on Stability of Oxytetracycline and Sulfamethazine Residues in Raw Milk using HPLC Method

2019 ◽  
Vol 20 (2) ◽  
pp. 54-59
Author(s):  
Fathy El-Toukhy ◽  
M Sabry ◽  
Mohamed El-Sherbiny
Keyword(s):  
High Performance ◽  
Ultra Violet ◽  
Heat Stability ◽  
Raw Milk ◽  
Hplc Method ◽  
Milk Samples ◽  
Qualitative Detection ◽  
Before And After ◽  
Antibiotics Residues ◽  
Diffusion Assay

Two hundred raw milk samples (250 ml of each) were collected from small dairy farms, street peddlers and dairy shops in Mansoura Governorate. These samples were screened using Bacillus Subtilis Diffusion Assay for qualitative detection of antibiotics residues; where the percentage of suspected positive samples was 12.5%. High Performance Liquid Chromatography – Ultra Violet detector (HPLC- UV) method was developed and validated to determine the amount of oxytetracycline (OTC) and sulfamethazine (SMZ) residues in raw milk before and after boiling. The results revealed that 8.5 % of the raw milk samples were containing (OTC) residues (6.5 % of them exceed MRL) while, (SMZ) was detected in4 % of the raw milk samples (3 % of them exceed MRL). Upon applying heat treatment, the reduction in the (OTC) content in milk boiled for 2 minutes was 30.5% but boiling for 5 minutes was accompanied with 54.1% reduction. On the other hand, the percentage of (SMZ) reduction was 1.7% and 9.5% in milk boiled for 2 and 5minutes respectively which could be attributed to the low heat stability of (OTC) and high stability of (SMZ).

Assessment of isoflavonoid concentrations in Australian bovine milk samples

1998 ◽  
Vol 65 (3) ◽  
pp. 479-489 ◽  
Author(s):  
ROGER A. KING ◽  
MARK M. MANO ◽  
RICHARD J. HEAD
Keyword(s):  
Animal Studies ◽  
Biological Effects ◽  
Bovine Milk ◽  
Western Society ◽  
Human Diet ◽  
Milk Samples ◽  
Before And After ◽  
The Mean ◽  
Western Australian ◽  
Infants And Young Children

There is considerable interest in the possibility that diet-derived isoflavonoids may help in protection against a number of chronic diseases common in Western society. Based on animal studies, however, concerns have been raised that consumption of isoflavonoids by infants and young children may be undesirable. Clover contains isoflavonoids and therefore may represent, via milk, a source of isoflavonoids in the human diet. In this study the concentrations of daidzein (7, 4′-dihydroxyisoflavone), genistein (5, 7, 4′-trihydroxyisoflavone) and equol (7-hydroxy-(4′-hydroxyphenyl)chroman) were measured using HPLC in cows' milk samples obtained from 76 farms in three Australian states. In addition, concentrations were measured in samples collected from one South Australian factory both before and after pasteurization. Concentrations in all samples were found to be extremely low. The mean daidzein concentration was <5 ng/ml. Mean genistein concentrations ranged from just detectable (∼2 ng/ml) in Victorian samples collected during summer to 20-30 ng/ml in samples from all states collected during spring when isoflavonoid-containing clover is most dominant in pasture. Mean equol concentrations ranged from 45±10 ng/ml in Victorian farm samples collected during summer to 293±52 ng/ml in Western Australian samples collected in spring. The mean concentrations of genistein and equol in post-pasteurization samples collected in spring were approximately double those for samples collected in autumn. Pasteurization had no effect on isoflavonoid concentrations. We conclude that the concentrations of isoflavonoids in Australian cows' milk are low and are therefore unlikely to have any pronounced biological effects in human consumers.

Plasma Level Formaldehyde in Children Receiving Pulpotomy Treatment under General Anesthesia

2017 ◽  
Vol 41 (2) ◽  
pp. 95-101
Author(s):  
Majid Bagrizan ◽  
Pouya Pourgolshani ◽  
Sepanta Hosseinpour ◽  
Golnoush Jalalpour ◽  
Mostafa Zahmatkesh Shahrestani
Keyword(s):  
High Performance Liquid Chromatography ◽  
Plasma Level ◽  
General Anesthesia ◽  
High Performance ◽  
Primary Teeth ◽  
Blood Samples ◽  
Significant Difference ◽  
Before And After ◽  
Change In The Mean ◽  
The Mean

Objectives: Formocresol has long been used by dentists for pulpotomy of primary teeth. Due to some concerns regarding its possible carcinogenicity, formocresol has been the topic of numerous studies. This study sought to assess the changes in plasma level of formaldehyde of children after receiving pulpotomy under general anesthesia. Study design: Twenty-five children between 2–6 years requiring dental treatments under general anesthesia were studied. Blood samples were taken of children before and after the procedure. Plasma level of formaldehyde was measured using high performance liquid chromatography (HPLC). Results: A total of 106 pulpotomy treatments were performed in 25 children using 126 cotton pellets dipped in formocresol. An increase and a decrease in plasma level of formaldehyde were noted in 5 (20%) and 20 (80%) children, respectively post-operatively compared to baseline. The t-test showed no significant difference in plasma level of formaldehyde pre- and postoperatively (P=0.12). the plasma level of formaldehyde in children who had higher levels of formaldehyde prior to the operation was also higher than that of others after the operation and this association was statistically significant (P=0.001, r=0.64). Conclusions: The results showed no significant change in the mean plasma level of formaldehyde in children who received pulpotomy under general anesthesia compared to its baseline value.

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