scholarly journals Effects of short-time cold impact on hematologic chrarcteristics of tundra vole (Microtus oeconomus PALLAS)

Author(s):  
Алевтина Григорьевна Кудяшева ◽  
Анастасия Владимировна Ермакова ◽  
Оксана Вениаминовна Раскоша

Проведено изучение воздействия низкой температуры (-50С) в течение двух часов на гематологические показатели самцов полевок-экономок (Microtus oeconomus Pallas) разного возраста (2, 4 и 10 месяцев). Обнаружена зависимость проявления эффекта от возраста животных. В большей степени на общее переохлаждение реагировали полевки старшей возрастной группы. Установлено, что действие холода вызывает умеренную лейкопению и лимфопению у половозрелых животных (4 и 10 месяцев), а также понижение содержания тромбоцитов в периферической крови у 10 месячных самцов. Полученные данные свидетельствуют о чувствительности показателей периферической крови самцов полевок-экономок к кратковременному действию низкой температуры и являются отражением неспецифичных клеточных реакций. We studied the effect of the 2-hours exposure to the low temperature (-50°C) on the hematological parameters of male tundra vole (Microtus oeconomus Pallas) of different ages (2, 4, and 10 months). We found the relation of the effect on the age of the animals. Voles of the older age group responded to a higher degree to general hypothermia. The action of the cold causes moderate leukopenia and lymphopenia in mature animals (4 and 10 months), as well as a decrease in platelet content in peripheral blood in 10-month-old males. The data obtained indicate the sensitivity of the peripheral blood indices of male tundra voles to the short-term effect of low temperature. They are a reflection of non-specific cellular reactions.

2020 ◽  
Vol 35 (3) ◽  
Author(s):  
Tayyaba Gul Malik ◽  
Hina Nadeem ◽  
Eiman Ayesha ◽  
Rabail Alam

Objective: To study the effect of short-term use of oral contraceptive pills on intra-ocular pressures of women of childbearing age.   Methods: It was a comparative observational study, conducted at Arif memorial teaching hospital and Allied hospital Faisalabad for a period of six months. Hundred female subjects were divided into two groups of 50 each. Group A, included females, who had been taking oral contraceptive pills (OCP) for more than 6 months and less than 36 months. Group B, included 50 age-matched controls, who had never used OCP. Ophthalmic and systemic history was taken. Careful Slit lamp examination was performed and intraocular pressures (IOP) were measured using Goldman Applanation tonometer. Fundus examination was done to rule out any posterior segment disease. After collection of data, we analyzed and compared the intra ocular pressures between the two groups by using ANOVA in SPSS version 21.   Results: Average duration of using OCP was 14.9 months. There was no significant difference of Cup to Disc ratios between the two groups (p= 0.109). However, significant difference was noted between the IOP of OCP group and controls. (p=0.000). Conclusion: OCP significantly increase IOP even when used for short time period.


2016 ◽  
Author(s):  
Kayla M. Miller ◽  
◽  
Andrew S. Elwood Madden ◽  
Janice L. Bishop ◽  
Charity Phillips-Lander ◽  
...  
Keyword(s):  

Wear ◽  
2021 ◽  
pp. 203732
Author(s):  
Quanshun Luo ◽  
Jianbin Li ◽  
Qintai Yan ◽  
Wenbo Li ◽  
Yubi Gao ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ziyou Zhou ◽  
Can Wu ◽  
Zhen Hu ◽  
Yujuan Chai ◽  
Kai Chen ◽  
...  

AbstractIt has been known that short-time auditory stimulation can contribute to the improvement of the balancing ability of the human body. The present study aims to explore the effects of white Gaussian noise (WGN) of different intensities and frequencies on dynamic balance performance in healthy young adults. A total of 20 healthy young participants were asked to stand at a dynamic balance force platform, which swung along the x-axis with an amplitude of ± 4° and frequency of 1 Hz. Their center of pressure (COP) trajectories were recorded when they were stimulated by WGN of different intensities (block 1) and different frequencies (block 2). A traditional method and detrended fluctuation analysis (DFA) were used for data preprocessing. The authors found that only with 75–85 dB WGN, the COP parameters improved. WGN frequency did not affect the dynamic balance performance of all the participants. The DFA results indicated stimulation with 75 dB WGN enhanced the short-term index and reduced the crossover point. Stimulation with 500 Hz and 2500 Hz WGN significantly enhanced the short-term index. These results suggest that 75 dB WGN and 500 Hz and 2500 Hz WGN improved the participants’ dynamic balance performance. The results of this study indicate that a certain intensity of WGN is indispensable to achieve a remarkable improvement in dynamic balance. The DFA results suggest that WGN only affected the short-term persistence, indicating the potential of WGN being considered as an adjuvant therapy in low-speed rehabilitation training.


2021 ◽  
Vol 141 ◽  
pp. 110824
Author(s):  
Yongliang Shen ◽  
Shuli Liu ◽  
Abdur Rehman Mazhar ◽  
Xiaojing Han ◽  
Liu Yang ◽  
...  

SpringerPlus ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Phillip R. Myer ◽  
Kyle R. Parker ◽  
Andrew T. Kanach ◽  
Tengliang Zhu ◽  
Mark T. Morgan ◽  
...  

2018 ◽  
Vol 189 (5) ◽  
pp. 529-540 ◽  
Author(s):  
Andreas Lamkowski ◽  
Matthias Kreitlow ◽  
Jörg Radunz ◽  
Martin Willenbockel ◽  
Frank Sabath ◽  
...  

Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 609
Author(s):  
Jianghua Liao ◽  
Juan Liu ◽  
Zhijian Guan ◽  
Chao Li

The Colorado potato beetle is a serious pest of Solanaceae in China. In early summer, cold spells in later spring may occur for brief periods in the field environmental conditions, and temperatures often deviate far below the normal temperature for short periods, such as sudden short-term low temperature, may affect the development of Colorado potato beetle eggs. This paper studies the effects of low temperature stress at 8 °C for 0 d, 1 d, 3 d, 5 d, 7 d, and 10 d on the development of Colorado potato beetle eggs. Our results show that egg survival is significantly affected by short-term low temperature exposure. The percentage of eggs hatched is significantly affected by different treatment times (p = 0.000)—the percentage of eggs hatched decreases with increased treatment time, and Colorado potato beetles will extend the wintering time of their soil to resist the effects of lower temperatures. Thus, exposure of Colorado potato beetles to a short-term low temperature affects their emergence and population growth; this study could provide information for the occurrence, monitoring, and early warning of Colorado potato beetle during short-term temperature.


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