scholarly journals A simple method for short-term maintenance of neonatal mice without foster mothers

2020 ◽  
Vol 7 (1) ◽  
pp. 126
Author(s):  
Craig Kreikemeier-Bower ◽  
Pascal Polepole ◽  
Katherine Pinkerton ◽  
Luwen Zhang
Development ◽  
1966 ◽  
Vol 15 (2) ◽  
pp. 133-141
Author(s):  
T. N. Chapekar ◽  
G. V. Nayak ◽  
Kamal J. Ranadive

Short-term maintenance of mouse and rat ovary in organotypic culture system is no longer a problem (Martinovitch, 1938; Gaillard, 1953; Trowell, 1959). Gaillard (1953) cultivated ovaries from 7- to 8-day-old and 21-day-old mice for a week on the plasma clot. Trowell (1959) maintained ovaries of 8-day-old mice on a synthetic medium in an O2-CO2 atmosphere for 9 days. He observed no histological differentiation in the tissues of the ovary. What needs confirmation and further investigation is the possibility of maintenance of functional activity of the ovary under culture conditions. A study was therefore undertaken to investigate if an ovary, cultivated in vitro for some time, shows hormonal activity when transplanted in vivo. In the present work cultured ovaries were grafted in the anterior eye-chamber of spayed female mice and the development of secondary sex organs such as mammary glands and uterus was studied.


2021 ◽  
Vol 1 ◽  
Author(s):  
Isni Septima Anindhita

The Ministry of Public Works and Public Housing (PUPR) has the duty and responsibility to carry out effective and efficient river operation activities and river infrastructure including overcoming floods during the rainy season, but these activities are deemed necessary for improvement in planning procedures. To realize this goal, it is necessary to manage risks that can reduce river performance and river infrastructure as flood control. With risk management in this activity, it is possible to apply the sequence of risks that occur which are then used as recommendations for action (risk response) and risk-based development strategies to improve river performance and river infrastructure to control floods through operation and maintenance activities to build a functional and sustainable system. Suitable for long-term planning and short-term maintenance needs.


2019 ◽  
Vol 30 (5) ◽  
pp. 2997-3014 ◽  
Author(s):  
Benjamin Kowialiewski ◽  
Laurens Van Calster ◽  
Lucie Attout ◽  
Christophe Phillips ◽  
Steve Majerus

Abstract An influential theoretical account of working memory (WM) considers that WM is based on direct activation of long-term memory knowledge. While there is empirical support for this position in the visual WM domain, direct evidence is scarce in the verbal WM domain. This question is critical for models of verbal WM, as the question of whether short-term maintenance of verbal information relies on direct activation within the long-term linguistic knowledge base or not is still debated. In this study, we examined the extent to which short-term maintenance of lexico-semantic knowledge relies on neural activation patterns in linguistic cortices, and this by using a fast encoding running span task for word and nonword stimuli minimizing strategic encoding mechanisms. Multivariate analyses showed specific neural patterns for the encoding and maintenance of word versus nonword stimuli. These patterns were not detectable anymore when participants were instructed to stop maintaining the memoranda. The patterns involved specific regions within the dorsal and ventral pathways, which are considered to support phonological and semantic processing to various degrees. This study provides novel evidence for a role of linguistic cortices in the representation of long-term memory linguistic knowledge during WM processing.


2011 ◽  
Vol 25 (6) ◽  
pp. e217-e220 ◽  
Author(s):  
Wan-Fu Su ◽  
Shao-Cheng Liu ◽  
Feng-Shiang Chiu ◽  
Chia-Hsuan Lee

Background Vidian neurectomy was an option for treating allergic rhinitis in the past but outcomes varied. A modified transsphenoidal approach is proposed to simplify endoscopic vidian neurectomy. The postoperative evaluation of rhinorrhea, sneezing, and recurrence was investigated. Methods A total of 317 patients with refractory allergic rhinitis underwent 414 transsphenoidal vidian neurectomies from September 2006 to December 2010. A rigid nasal endoscope was used through a transsphenoidal approach to reach the vidian canal inside the sphenoid sinus (type I) or through its anterior opening into the pterygopalatine fossa (type II) and to cut or cauterize the vidian nerve. The surgical outcomes were analyzed for patients with at least 6 months of follow-up. Results Our approach was successful in 90.3% of the 414 vidian neurectomies. Vidian neurectomy was successful via the type I approach in 27 sides and type II approach in 347 sides. The short-term surgical outcomes of 163 patients who underwent a total of 236 vidian neurectomies with at least 6 months of follow-up were analyzed. Immediate, complete cessation of sneezing and rhinorrhea occurred uniformly. Three recurrences were detected during the 1–2 years of follow-up. The symptom of dry eye was reported for 172 surgical sides, but only 6 had persistent symptoms for > 6 months. Conclusion The transsphenoidal approach in a vidian neurectomy is a simple method that removes the need for sphenopalatine artery ligation and causes less surgical morbidity. However, the possibility of recurrence of this condition in the long term needs further investigation.


2009 ◽  
Vol 81 (Suppl_1) ◽  
pp. 100-100
Author(s):  
Paul S. Cooke ◽  
Gail C. Ekman ◽  
Joantine C.J. van Esterik ◽  
Philip J. Dziuk ◽  
Sherrie G. Clark ◽  
...  

2004 ◽  
Vol 82 (2-3) ◽  
pp. 279-283 ◽  
Author(s):  
E DROBAC ◽  
E DURAND ◽  
V LAUDENBACH ◽  
J MANTZ ◽  
J GALLEGO

1979 ◽  
Vol 88 (2) ◽  
pp. 228-234 ◽  
Author(s):  
J. A. McLean ◽  
K. P. Mathews ◽  
W. R. Solomon ◽  
P. R. Brayton ◽  
N. K. Bayne

Nasal airway resistance (NAR) was assessed from the slope of pressure-flow curves obtained during normal nasal breathing. Volunteers were classified as atopic or nonatopic according to strict criteria. 100 ppm NH3 was introduced into each nostril for periods ranging from 5 to 30 seconds with frequent NAR monitoring. A progressive increase in NAR responses was obtained with incremental NH3 exposures, but no significant difference was noted between the mean response of atopic and nonatopic subjects. Control exposures to compressed air under the same pressure generally produced only a small change in NAR, while aerosolized buffered saline increased NAR more than compressed air. The nasal response to NH3 was effectively inhibited by intranasal atropine administration but not by chlorpheniramine. The described procedure provides a safe and simple method for studying semiquantitatively the short-term effects of inhaled irritants on the nose.


Sign in / Sign up

Export Citation Format

Share Document