Response of teat enzymes of sheep and cattle to stimulation by stilboestrol and oestrogenic subterranean clover

1975 ◽  
Vol 26 (6) ◽  
pp. 1009
Author(s):  
R Smithard ◽  
ER Cole ◽  
JP Kennedy
Keyword(s):  
Enzyme Activity ◽  
Isocitrate Dehydrogenase ◽  
Enzyme Activities ◽  
Dose Range ◽  
Subterranean Clover ◽  
Control Groups ◽  
Short Term ◽  
Positive Linear Relationship ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
And Control

The activities of glucose-6-phosphate dehydrogenase (G-6-PDH), malate dehydrogenase (MDH) and isocitrate dehydrogenase (ICDH) were investigated as indicators of oestrogenic response in sheep and cattle. The activities of the enzymes were higher in teat tissue from wethers and steers injected with stilboestrol dipropionate than in control groups not receiving oestrogen. There was a positive linear relationship between teat enzyme activity and log(dose + 1) in wethers injected with stilboestrol dipropionate over the dose range 0–40 µg/day. G-6-PDH and MDH were used to detect oestrogenic responses in sheep and cattle to feed containing a high proportion of subterranean clover (Trifolium subterraneurn L.) cv. Dwalganup. The differences in mean enzyme activities between treatment and control groups were highly significant. The results indicate that in the short term, teat enzymes of cattle respond to oestrogenic feeds in a manner similar to those of sheep.

scholarly journals Reading comprehension on the last grades of cicles I and II of elementary school

CoDAS ◽  
2014 ◽  
Vol 26 (4) ◽  
pp. 276-285
Author(s):  
Eliane Mi Chang ◽  
Clara Regina Brandão de Avila
Keyword(s):  
Working Memory ◽  
Elementary School ◽  
Reading Comprehension ◽  
Research Groups ◽  
Control Groups ◽  
Short Term ◽  
Good Readers ◽  
Spearman Coefficient ◽  
Positive Correlations ◽  
And Control

PURPOSE: To characterize students' performance in Cycle I and II of the Elementary School (EF), in decoding, reading comprehension and underlying skills of reading, and investigate correlations between these variables, in the absence and presence of reading comprehension deficits, identified by their teachers.METHODS: 125 students from ES were grouped according to Cycle and presence or absence of reading comprehension impairments. Two Control (good readers from both Cycles) and two Research groups (poor readers from both Cycles) were established. Assessment involved: fluency and reading comprehension; oral comprehension; working and short-term phonological memory; grammar closure. It was compared (Mann-Whitney test): in intragroup study, both Control and Research groups; in intergroup study, Control and Research from different cycles, and Control I and Research II. Spearman coefficient investigated correlations.RESULTS: Analyzing reading comprehension, we observed better performance of Control Groups in all tasks in comparison to the respective Research Groups, and better performance of Control II in comparison to Control I. Research Groups had similar results in most tests. Positive correlations have been observed between most of the variables.CONCLUSION: Students without reading comprehension impairments showed better performance in reading in both Cycles. Working memory and oral comprehension did not differentiate students with and without complaints in Cycle I, differently from what was observed in Cycle II. Research II presented similar or better performance than Research I and similar or worse performance than Control I. Underlying skills showed different profiles of correlation with reading comprehension capacity, according to the group.

CYCLISCHE SCHWANKUNGEN DER AKTIVITÄTEN VON HYDROXYSTEROID-DEHYDROGENASEN IM CORPUS LUTEUM DES RINDES

1972 ◽  
Vol 69 (2) ◽  
pp. 369-384
Author(s):  
H. Brandau ◽  
L. Brandau ◽  
G. Mutzke
Keyword(s):  
Enzyme Activity ◽  
Corpus Luteum ◽  
Enzyme Activities ◽  
Optical Method ◽  
Activity Patterns ◽  
Hydroxysteroid Dehydrogenase ◽  
Corpora Lutea ◽  
Bovine Corpus Luteum ◽  
Glucose 6 Phosphate Dehydrogenase

ABSTRACT In the bovine corpora lutea periodical activities of the Δ53β-, 3β-, 17β-and 20β-hydroxysteroid dehydrogenase (OHSDH) as well as activities of glyceraldehyde-3-phosphate- and glucose-6-phosphate dehydrogenase were measured quantitatively and the alterations throughout the different stages of the cycle were studied. After homogenization of the tissue and fractionate centrifugation the enzyme activities were determined by a standardized optical method. The activities of the Δ53β-, and 3β- and 17β-OHSDH increase slowly during the first 7 days of the cycle, the maximum is reached abruptly on the 12th to 13th day of the cycle. After a striking reduction the activities decline continually to the 19th to 21st day reaching the values detected at the beginning of the cycle. The 20β-OHSDH increases slowly to the maximum on the 15th day of the cycle. Activities of the 3α-OHSDH were obtained only inconsistently. The behaviour of the activities of G6PDH was nearly identical with that of the 3β-OHSDH, while the GAPDH shows only little fluctuations of its activities. The obtained enzyme activity patterns of the maturating and high functional corpus luteum correspond to the well-known data of the biosynthetic function of the bovine corpus luteum. The changes of the amounts of progesterone and 20β-progesterol agree with the course of the activities of the 3β- resp. 20β-OHSDH.

High physiological levels of epinephrine do not enhance muscle glycogenolysis during tetanic stimulation

1994 ◽  
Vol 77 (2) ◽  
pp. 956-962 ◽  
Author(s):  
A. Chesley ◽  
D. J. Dyck ◽  
L. L. Spriet
Keyword(s):  
Tetanic Stimulation ◽  
Control Groups ◽  
Perfusion Medium ◽  
Short Term ◽  
Muscle Lactate ◽  
Rest Perfusion ◽  
Train Duration ◽  
Fast Twitch ◽  
And Control ◽  
White Gastrocnemius

This study examined whether high physiological concentrations of epinephrine (EPI) would enhance muscle glycogenolysis during intense muscular contractions. Muscles of the rat hindlimb were perfused for 12 min at rest and 45 s of tetanic stimulation (1.0-Hz train rate, 100-ms train duration at 80 Hz) without EPI (control) or with 15 or 35 nM EPI. In the EPI groups the muscles were perfused with EPI for the last 2 min of rest perfusion and throughout stimulation. Glycogenolysis in the white gastrocnemius, red gastrocnemius, plantaris, and soleus muscles during stimulation was unaffected by the presence of EPI in the perfusion medium. In addition, muscle lactate and hindlimb lactate efflux were similar in EPI and control groups. It is concluded that EPI is not important for enhancing glycogenolysis in rat muscles composed predominantly of fast-twitch fibers during intense short-term tetanic stimulation.

Subhypnotic dose of intravenous propofol stimulates appetite in cats with stress-induced anorexia

2020 ◽  
Vol 187 (8) ◽  
pp. e58-e58
Author(s):  
Victry Fredley ◽  
Rachael Kreisler ◽  
Kirk Miller
Keyword(s):  
Treatment Group ◽  
Control Groups ◽  
Short Term ◽  
Onset Of Action ◽  
Adverse Side Effects ◽  
Delayed Onset ◽  
Wilcoxon Rank Sum Test ◽  
And Control ◽  
Median Amount ◽  
Food Consumed

BackgroundStress-induced anorexia is common in cats. While medications are available to stimulate appetite, many require oral administration, have delayed onset-of-action or cause adverse side effects. The aim of this study was to determine whether cats diagnosed with stress-induced anorexia given a subhypnotic dose of intravenous propofol would have increased short-term appetite as compared to those given placebo.MethodsAnorexic shelter cats received either 1 mg/kg propofol or 1 mL saline placebo and then presented with various commercial cat foods. Grams of food consumed was measured at 15 and 30 min, and total grams compared between treatment and control groups using the Wilcoxon rank-sum test. 12 cats were enrolled, with six cats randomly assigned to each group.ResultsThe median amount consumed by the treatment group was 31 g (range: 0–72), with the median for the four cats (67 per cent) who consumed food being 45 g (range: 26–72), or 49 per cent of their daily maintenance calorie requirement. The median amount consumed by control cats was 0 g (range: 0–5), with one cat consuming food. Total grams consumed was different between treatment and control groups (P=0.05).ConclusionA subhypnotic dose of intravenous propofol increased appetite in cats with stress-induced anorexia for a 30 min period.

scholarly journals Hypothalamus-Related Resting Brain Network Underlying Short-Term Acupuncture Treatment in Primary Hypertension

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Hongyan Chen ◽  
Jianping Dai ◽  
Xiaozhe Zhang ◽  
Kai Wang ◽  
Shuhua Huang ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cardiovascular System ◽  
Acupuncture Treatment ◽  
Bodily Pain ◽  
Brain Network ◽  
Control Group ◽  
Control Groups ◽  
Short Term ◽  
Sf 36 ◽  
And Control

The present study attempted to explore modulated hypothalamus-seeded resting brain network underlying the cardiovascular system in primary hypertensive patients after short-term acupuncture treatment. Thirty right-handed patients (14 male) were divided randomly into acupuncture and control groups. The acupuncture group received a continuous five-day acupuncture treatment and undertook three resting-state fMRI scans and 24-hour ambulatory blood pressure monitoring (ABPM) as well as SF-36 questionnaires before, after, and one month after acupuncture treatment. The control group undertook fMRI scans and 24-hour ABPM. For verum acupuncture, average blood pressure (BP) and heart rate (HR) decreased after treatment but showed no statistical differences. There were no significant differences in BP and HR between the acupuncture and control groups. Notably, SF-36 indicated that bodily pain (P= 0.005) decreased and vitality (P= 0.036) increased after acupuncture compared to the baseline. The hypothalamus-related brain network showed increased functional connectivity with the medulla, brainstem, cerebellum, limbic system, thalamus, and frontal lobes. In conclusion, short-term acupuncture did not decrease BP significantly but appeared to improve body pain and vitality. Acupuncture may regulate the cardiovascular system through a complicated brain network from the cortical level, the hypothalamus, and the brainstem.

scholarly journals Antioxidant SMe1EC2 modulates pentose phosphate pathway and glutathione-dependent enzyme activities in tissues of aged diabetic rats

2017 ◽  
Vol 10 (4) ◽  
pp. 148-154 ◽  
Author(s):  
Nuray Nuriye Ulusu ◽  
Müslüm Gök ◽  
Arzu Ayşe Sayin Şakul ◽  
Nuray Ari ◽  
Milan Stefek ◽  
...  
Keyword(s):  
Pentose Phosphate Pathway ◽  
Enzyme Activities ◽  
Body Weight Loss ◽  
Diabetic Rats ◽  
Pentose Phosphate ◽  
Aged Rats ◽  
Glutathione S Transferase ◽  
Phosphogluconate Dehydrogenase ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
And Control

Abstract The pentose phosphate pathway and glutathione-associated metabolism are the main antioxidant cellular defense systems. This study investigated the effects of the powerful antioxidant SMe1EC2 (2-ethoxycarbonyl-8-methoxy-2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b] indolinium dichloride) on pentose phosphate pathway (PPP) and glutathione-dependent enzyme activities in aged diabetic and aged matched control rats. Diabetes was induced by streptozotocin injection in rats aged 13-15 months. Diabetic and control rats were divided into two subgroups, one untreated and one treated with SMe1EC2 (10 mg/kg/day, orally) for 4 months. SMe1EC2 ameliorated body weight loss, but not hyperglycemia of aged diabetic rats. Diabetes resulted in decreased glucose-6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6PGD) and glutathione-S-transferase (GST), yet in unchanged glutathione reductase (GR) in the liver of aged diabetic rats. In the liver of the aged control rats, SMe1EC2 did not affect G6PDH, 6PGDH and GR, but it inhibited GST. SMe1EC2 also failed to affect diabetes-induced decline in 6PGDH, it ameliorated G6PDH but produced further decline in GST in the liver of aged diabetic rats. In the kidney of aged rats, G6PDH and GST were found to be comparable among the groups, but diabetes up-regulated 6PGDH and GR; these alterations were prevented by SMe1EC2. In the heart of aged diabetic rats, while GST remained unchanged, the recorded increase in G6PD, 6PGD, GR was prevented by SMe1EC2. Furthermore, an unchanged GR and remarkable increases in G6PD, 6PGD and GST were found in the lung of the aged diabetic group. These alterations were completely prevented by SMe1EC2. The results suggest that in aged rats SMe1EC2 can ameliorate the response of the kidney, heart and lung but not that of the liver against diabetes-induced glucotoxicity by interfering with the activity of redox network enzymes.

The induction by exogenous hormones of enzymes metabolising glucose 6-phosphate in the mammary gland of the pseudopregnant rabbit

1969 ◽  
Vol 36 (1) ◽  
pp. 47-52 ◽  
Author(s):  
R. J. Heitzman
Keyword(s):  
Enzyme Activity ◽  
Mammary Gland ◽  
Enzyme Activities ◽  
Synergistic Action ◽  
Phosphate Metabolism ◽  
Exogenous Hormones ◽  
Phosphogluconate Dehydrogenase ◽  
Intraductal Injection ◽  
Glucose 6 Phosphate Dehydrogenase

SummaryA study was made of the effects of the hormones, prolactin and cortisol acetate, on the activities in the mammary gland of the pseudopregnant rabbit of the enzymes concerned with lactose biosynthesis and glucose 6-phosphate metabolism, namely: UDP-glucose pyrophosphorylase, UDP-glucose-4'-epimerase, phosphofructokinase, phosphoglucomutase, glucose 6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase. Significant increases in enzyme activities were observed in rabbits examined 3 or 4 days after receiving a mammary intraductal injection of prolactin. The activities were not significantly increased at examination 2 days after injection of prolactin. Rabbits receiving cortisol acetate each day for 3 days also showed no significant increases in mammary enzyme activity. However, when prolactin and cortisol acetate were given simultaneously over a period of 3 days, increased enzyme activities were found suggesting synergistic action of the hormones.

scholarly journals Adaptation of the small intestine during pregnancy and lactation in the rat

1979 ◽  
Vol 184 (2) ◽  
pp. 245-251 ◽  
Author(s):  
K Burdett ◽  
C Reek
Keyword(s):  
Small Intestine ◽  
Lactate Dehydrogenase ◽  
Isocitrate Dehydrogenase ◽  
Enzyme Activities ◽  
Unit Area ◽  
Mucosal Epithelium ◽  
Pregnancy And Lactation ◽  
Enzyme Change ◽  
Specific Activities ◽  
Glucose 6 Phosphate Dehydrogenase

During pregnancy and lactation in the rat the small intestine in general and the mucosal epithelium in particular gain weight. The specific activities of sucrase, lactate dehydrogenase and succinate-tetrazolium reductase remain constant and those of glucose 6-phosphate dehydrogenase and isocitrate dehydrogenase increase. There is no evidence that the reported decrease in absorption per unit area or weight of mucosal epithelium during pregnancy and lactation is due to decreases in enzyme activities within the epithelium. The pattern of enzyme change shows that the response of the gut to the stimuli of pregnancy and lactation must be a complex one, possibly involving increases in the specific activities of some enzymes.

scholarly journals Cue-Based Feeding and Short-Term Health Outcomes of Premature Infants in Newborn Intensive Care Units(NICU) : A None-Randomized Trial

2021 ◽  
Author(s):  
samane Sefatbaqa ◽  
Yadollah Zahedpasha ◽  
Marzieh Hasanpour ◽  
Karimollah Hajian Tilaki ◽  
Mohammad Reza Zarkesh ◽  
...  
Keyword(s):  
Intensive Care ◽  
Health Outcomes ◽  
Preterm Infants ◽  
Control Group ◽  
Phase Lag ◽  
Control Groups ◽  
Short Term ◽  
The Mean ◽  
Newborn Intensive Care ◽  
And Control

Abstract Background: Feedings based on behavioral cues is a method relying on infants’ behavioral expressions of readiness to feed. The objective of this interventional study was to determine the effect of cue-based feeding on the short-term health outcomes of preterm infants.Methods: This quasi-experimental study utilized a historical or phase lag design. It involved 60 preterm infants admitted to an Iranian referral hospital’s Level III-Newborn Intensive Care Unit (NICU) from June 2018 until January 2019. The experimental group (n=30) received a three-step intervention of offering behavioral-cue-based oral (BCBO) feedings: Step 1 – One BCBO feeding every twelve hours for three days; Step 2 - Two BCBO feedings every 12 hours for three days; and Step 3 – All feedings as BCBO feedings for three days. The control group received standard care feedings. Group difference data were analyzed with SPSS version 16 using descriptive and inferential statistics.Results: The infants’ mean weight at time of discharge for the intervention and control groups were 1492.79 ± 21.65 gr and 1395.71 ± 17.61 gr (P = .003) respectively. The mean durations of achieving full oral feedings in the intervention and control groups were 17 ± 6 and 20 ± 11 days, respectively (P = .19). The mean frequencies of hypoxia were 1 ± 1.54 and 5 ± 9.31 respectively (P = .03) and of gavage feedings 725 ± 584 and 1846 ± 2097 respectively (P = .009). No apnea events were reported for the intervention group; the frequency of apnea in the control group was 1 ± 2.11 (P = .16).Conclusion: The findings indicate that cue-based feeding is beneficial for preterm infants. Therefore, it is recommended that nurses employ cue-based feeding in the NICU.Trial Registration: IRCT20170828035962N2. Registered, 27 /05/ 2018- Prospectively registered, https://www.irct.ir/trial/27024.

scholarly journals Safety and efficacy study: Short-term application of radiofrequency ablation and stereotactic body radiotherapy for Barcelona Clinical Liver Cancer stage 0–B1 hepatocellular carcinoma

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245076
Author(s):  
Feiqian Wang ◽  
Kazushi Numata ◽  
Atsuya Takeda ◽  
Katsuaki Ogushi ◽  
Hiroyuki Fukuda ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Radiofrequency Ablation ◽  
Side Effects ◽  
Liver Cancer ◽  
Stereotactic Body Radiotherapy ◽  
Control Group ◽  
Control Groups ◽  
Short Term ◽  
Safety And Efficacy ◽  
And Control

Aim To evaluate the safety and efficacy of the administration of radiofrequency ablation (RFA) and stereotactic body radiotherapy (SBRT) in the short term to the same patients in Barcelona Clinical Liver Cancer (BCLC) stages 0–B1. Methods From April 2014 to June 2019, we retrospectively reviewed BCLC stage 0–B1 patients with fresh hepatocellular carcinoma (HCC) lesions that were repeatedly treated by RFA (control group, n = 72), and by RFA and subsequent SBRT (case group, n = 26). Propensity score matching (PSM) was performed to reduce the selection bias between two groups. Recurrence, survival, Child–Pugh scores and short-term side effects (fever, bleeding, skin change, abdominal pain and fatigue) were recorded and analyzed. Results After PSM, 21 patients remained in each group. Seventeen and 20 patients in the case and control groups experienced recurrence. For these patients, the median times to progression and follow-up were 10.7 and 35.8 months, respectively. After PSM, the 1-year progression-free survival rate in case and control groups were 66.7% and 52.4%, respectively (P = 0.313). The inter-group overall survival (OS) was comparable (3 and 5-year OS rates in case groups were 87.3% and 74.8%, while rates in control groups were 73.7% and 46.3%, respectively; P = 0.090). The short-term side effects were mild, and the incidence showed no inter-group difference. The 1-year rates of the Child–Pugh score deterioration of ≥2 in case and control groups were 23.8% and 33.3% (P > 0.05), respectively. Conclusion The short-term administration of RFA and SBRT to the same BCLC stage 0–B1 patients may be feasible and effective because of their good prognosis and safety.

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