The effects of quinpirole in eliciting 50 kHz calls from the rat nucleus accumbens /

Fifty kHz rat vocalizations are theorized to reflect a positive affective state, and index the reward value of stimuli (Knutson, Burgdorf & Panksepp, 2002; Panksepp & Burgdorf, 2003; Brudzynski,2005). Previous studies have identified the neurochemical substrate of this behaviour to be dependent on dopaminergic activity at the nucleus accumbens shell (Burgdorf, Knutson, Panksepp & Ikemoto, 2001; Thompson, Leonard & Brudzynski, 2006). The utilization of d-amphetamine (a non-selective dopamine agonist) in these studies does not address the specific dopamine receptor types involved. The present study aims to identify the role of the D2- like family of receptors in the nucleus accumbens shell in the production of 50 kHz vocalizations in adult rats. Single injections of quinpirole in a saline vehicle were administered to the nucleus accumbens shell of 57 rats, and the number of 50 kHz vocalizations were recorded. An inverted V-shaped relationship was found between quinpirole dose (0.5 ~g, 3 ~g, 6 ~g, 1 0 ~g and 20 ~g, all in 0.2~1 saline) and the mean number of 50 kHz calls produced. Quinpirole successfully elicited significantly more 50 kHz calls than did a saline control at the 6 ~g dose, as did 7 ~g/0.2 ~l of d-amphetamine injections into the same brain site. To test whether a selective D2 antagonist could reverse elicited 50 kHz calling, double injections were given that used either saline or raclopride as a pretreatment before quinpirole injections. Saline followed by 6 ~g/0.2 ~l of quinpirole elicited significantly more 50 kHz vocalizations than did a double injection of saline, while pretreatment with an equimolar dose of raclopride reduced elicited calls to control levels. Raclopride was also used as a pretreatment of 7 ~g/0.2 ~l d-amphetamine, which elicited significantly fewer 50 kHz vocalizations than saline followed by amphetamine, replicating the finding of Thompson, Leonard & Brudzynski (2006).Subcutaneous injections of 0.5 mg/kg and 1.5 mg/kg of quinpirole produced a similar number of 50 kHz vocalizations as subcutaneous injection of saline. Wider dose ranges may be explored in fiiture research. Thus, direct activation of the Da-like receptors in the nucleus accumbens shell was sufficient to elicit 50 kHz vocalizations in adult rats, an effect which was reversed with selective local antagonism of Da-like receptors. The Da-like receptor family also appears necessary for pharmacological activation of 50 kHz calling, as d-amphetamine was no longer able to effectively elicit these vocalizations from the nucleus accumbens shell when the Da-receptor family was antagonized with raclopride. The acoustic parameters of elicited vocalizations remained typical of rat 50 kHz calls. Detailed analyses of the acoustic characteristics of elicited calls indicated significant increases in call duration and peak frequency across drug injection groups, particularly among quinpirole dose groups. The implications of these findings are not yet clear, but may represent an important direction for future research into the coding of semiotic content into affective signals in rats.

Account book from the Wilcox Estate, 1882-1886

This may be the account book of someone in the wholesale dry goods or grocery business. The account book includes balance sheets for a Waterford store and a Dunnville store. The accounts include clients from several southwestern Ontario communities. Names include Leitch, Turner, Auger, McKim, Beatty, Hewetson, Murton, Bell, Greig, Duggan, Kirk, and Logie. Local Niagara names include: W.B. Chambers of Welland and B.F. Morely of Thorold. Also includes deposit accounts held with Traders Bank of Canada and investments in the Temperance Colonization Society.

Florence P. Dolmage estate papers, 1878, 1945-1946

In 1852 Robert Dolmage (ca. 1821-1889) a merchant of Palermo, Halton County, Ontario married Frances Palmer of Toronto. Together they had four daughters: Carrie, Fanny, Laura and Florence. The family resided in Halton County until they moved to Grimsby, Ont. after 1871 and before 1881. Robert Dolmage died in 1889 and his wife, Frances died in 1904. After Robert’s death the family continued to reside in the family home on Main Street in Grimsby, Ont. and the business interests were looked after by Claude A. Boden. Mr. Boden became one of the prime beneficiaries of Florence Palmer Dolmage’s estate after her death in 1945. Florence Dolmage was buried in Queen’s Lawn Cemetery on July 7, 1945. As she was the last remaining member of this family her estate was dispersed to extended family members as well as charitable organizations. At this time, no information is known about the connection between the Dolmage and Sillett families.

Niagara South estate and legal documents collection, 1752-1937, n.d. [non-inclusive]

The documents in the collection include the names of families residing in Stamford Township, Welland County, which today is considered Niagara Falls. Some names are: Allan, Barnett, Brokenshaw, Buchanan, Cadham, Clark, Dalton, Dell, Fell, Garner, Hemmings, Kent, Lightbody, Orchard, Perry, Pew, Ross, Street, Thompson, Willox, Willson, Wright. For a more complete list of names consult the finding aid.

Welland Canal Survey of Lands Estate of Hall Davis and Jeremiah Adley 1834

Survey map and description of the Estate of Hall Davis and Jeremiah Adley's land created by The Welland Canal Company. Included is a written description of the land along with a drawing of the land. Noteable features include; Holland road, Adley's house, waste weir. The total land for the Estate of Hall Davis is 27 acres and 2 perches. The total land for Adley is 3 acres. The deed for the Estate of Hall Davis is dated August 16th 1834 and contains Samuel Swayze's name. Swayze's name is also written under Hall Davis' name. The deed for Adley's land is dated December 1st 1827. Surveyor notes are seen in pencil on the map.

Welland Canal Survey of Lands John Heslop's Estate

Survey map and description of John Heslop's Estate's land created by The Welland Canal Company. Included is a written description of the land along with a drawing of the land. Noteable features include; line between Heslop and Carrol's land. The land totals 11 acres, 2 roads and 36 perches. The survey contains the land on the West side of the resovoir as well as the land drowned by the resevoir. Surveyor notes are seen in pencil on the map.

Promissory Note, February 2, 1812 - William and Abraham Nelles and Nathanial Pettit Estate

A promise by Abraham and William Nelles to pay 50 pounds with interest, New York Currency, to John Pettit and Jonathan Woolverton, executors of the late Nathanial Pettit estate, three years after the date. Witness Will Crooks.

Promissory Note, February 2, 1813 - William and Abraham Nelles and Nathanial Pettit Estate

A promise by Abraham and William Nelles to pay 50 pounds with interest, New York Currency, to John Pettit and Jonathan Woolverton, executors of the late Nathanial Pettit estate, four years after the date. Witness Will Crooks.

Promissory Note, February 2, 1811 - William and Abraham Nelles and Nathanial Pettit Estate

A promise by Abraham and William Nelles to pay 50 pounds with interest, New York Currency, to John Pettit and Jonathan Woolverton, executors of the late Nathanial Pettit estate. Paid in full. Witness Will Crooks.

Promissory Note, February 2, 1814 - William and Abraham Nelles and Nathanial Pettit Estate

A promise by Abraham and William Nelles to pay 50 pounds with interest, New York Currency, to John Pettit and Jonathan Woolverton, executors of the late Nathanial Pettit estate, five years after the date. Witness Will Crooks.

Promissory Note, February 2, 1815 - William and Abraham Nelles and Nathanial Pettit Estate

A promise by Abraham and William Nelles to pay 50 pounds with interest, New York Currency, to John Pettit and Jonathan Woolverton, executors of the late Nathanial Pettit estate, six years after the date. Witness Will Crooks.

Promissory Note, February 2, 1816 - William and Abraham Nelles and Nathanial Pettit Estate

A promise by Abraham and William Nelles to pay 36 pounds with interest, New York Currency, to John Pettit and Jonathan Woolverton, executors of the late Nathanial Pettit estate, seven years after the date. Witness Will Crooks.

Broadside advertising a Real Estate Auction in the Village of Niagara Falls [New York], July, 1836.

Benjamin Rathburn (1790-1873) was a builder, banker and hotel-keeper who was well-known for his work in the development and expansion of Buffalo in the 1830s. He also conducted business in the Village of Niagara Falls. He purchased large tracts of land (largely on credit) with the intent to sell the land at a profit. However, the sales did not meet his expectations and Rathburn found himself over-extended on credit, ultimately leading to his financial ruin.Jesse P. Haines (1793-1877) was an American cartographer who is credited with mapping the Villages of Lockport and Niagara Falls, New York.

Investigation of the role of the nucleus accumbens in amphetamine-induced 50 kHz ultrasonic vocalizations in the rat

There is extensive evidence that the mesolimbic dopamine system underlies the production of 50 kHz ultrasonic vocalizations in rats. In particular, the shell of the nucleus accumbens is associated with generation of frequency modulated 50 kHz calls (a specific type of 50 kHz call which can be subdivided into various subtypes). There is also evidence that amphetamine administered systemically preferentially increases the proportion of trill and step calls compared to other frequency modulated 50 kHz subtypes. The purpose of this study was to investigate the effect of drug administration route and the role of the nucleus accumbens shell in amphetamine-induced 50 kHz call profile in the rat. Three experiments investigated this by using subcutaneous and intra-accumbens microinjections of amphetamine, as well as procaine (a local anesthetic) blockade of the nucleus accumbens. Ultrasonic vocalizations were recorded digitally from 24 rats and were analysed for sonographic structure based on general call parameters. The results of the three experiments were partially supportive of the hypotheses. Systemic amphetamine was found to induce greater bandwidth in 50 kHz calling compared to spontaneous calls in a vehicle condition. Systemic amphetamine was also found to preferentially increase the proportion of trill and step subtypes compared to vehicle. Moreover, there was no difference in the proportions of 50 kHz subtypes resulting from intracerebral or systemic application of amphetamine. There was, however, a significant difference for bandwidth, with systemic amphetamine inducing greater bandwidth over intraaccumbens application. Procaine blockade of the nucleus accumbens shell paired with subcutaneous amphetamine produced no difference in bandwidth of calls compared with those after a vehicle pre-treatment similarly paired. There was no reduction in the proportions of trill and step 50 kHz subtypes as well, with the procaine condition showing significantly greater proportion of step calls. The results of the study support a role for the iii nucleus accumbens shell in the amphetamine-induced changes on 50 kHz call profile. They also indicate there are more regions and pathways involved in generating 50 kHz calls than the projections from the ventral tegmental area to the nucleus accumbens. The implications of this work are that frequency modulated 50 kHz subtypes may be generated by distinct neurophysiological mechanisms and may represent a profitable avenue for investigating different circuits of 50 kHz call categories in the rat.

Broadside advertising a Real Estate Auction in the Village of Niagara Falls [New York], July, 1836.

Benjamin Rathburn (1790-1873) was a builder, banker and hotel-keeper who was well-known for his work in the development and expansion of Buffalo in the 1830s. He also conducted business in the Village of Niagara Falls. He purchased large tracts of land (largely on credit) with the intent to sell the land at a profit. However, the sales did not meet his expectations and Rathburn found himself over-extended on credit, ultimately leading to his financial ruin. Jesse P. Haines (1793-1877) was an American cartographer who is credited with mapping the Villages of Lockport and Niagara Falls, New York.