How does adenosine diphosphate (ADP) activate platelets Essay

How does adenosine diphosphate (ADP) activate platelets - Essay Example ADP induces platelet shape change, calcium flux, and inhibition of adenylyl cyclase, leading to aggregation. Kahner et al. (2006) also stated that rapid shape change, release of granular contents, generation of lipid mediators, and aggregation occur during platelet activation. Various surface receptors involved in platelet activation include G protein coupled receptors (GPCRs), integrins and glycoprotein receptors. Adenosine diphosphate (ADP) (released from platelet granules) and thromboxane A2 (generated within platelets) are the secondary mediators that activate other resting platelets, resulting in the amplification of initial physiological haemostatic response. Adenosine nucleotides are released following platelet activation signal through the P2 purinergic receptors on the platelet membrane. The two types of P2 receptors are ligand-gated cation channels (P2X), or GPCRs (P2Y). Till date, seven different P2X receptors (P2X1)) and eight distinct P2Y receptors (P2Y1,2,4,6,11-14) hav e been identified which were cloned from mammalian tissues. P2Y1, P2Y12, andP2X1 subtypes are the P2 purinergic receptors expressed on platelets and their physiologic agonists are ADP, ADP, and adenosine triphosphate (ATP), respectively. These receptors, when activated by the agonists, initiate a complex signaling cascade that ultimately results in platelet activation and thrombus formation. The physiological agonist for the P2Y1 receptor is ADP. This receptor can also be stimulated in vitro by 2MeSADP, ADP, APDaS and ADPbS in the decreasing order of potency and is involved platelet shape change and aggregation brought about by ADP. P2Y12 is coupled to Gi2 protein. Upon stimulation, the Ga and Gbc subunits of the heterotrimeric G protein dissociate and activate various signaling pathways. The Gai2 is found to be responsible for ADP-mediated inhibition of adenylyl cyclase and subsequent reduction in cytosolic cAMP concentrations. This is one

Management Information Systems Essay Example | Topics and Well Written Essays - 4000 words

Management Information Systems - Essay Example The essay "Management Information Systems" talks about the development of a new system for the ABC Company. This company is computer hardware manufacturer that carry out product for larger scale orders. The overall management and handling of such huge orders are difficult through the manual order processing approach.This information system will be used as an information management system of the overall organizational data. This system will conduct an online transaction and store the dealing and transaction data on the company’s central database. After that this data will be used to access the overall sales analysis. We will derive monthly or periodic report for the analysis of the overall business position. This system will facilitate in managing the overall products sales and deals regarding the corporate online transactions. Here we will be able to access and retrieve the overall quality of the stock and its current level because in any online transaction the stock status is really necessary for the handling of dealing. This product and stock information will provide a great facility for stock management. Here we will assign a product code to each project and through that code, we will easily retrieve the product information for the better management of the stack. This system will be an online system. We will create an organizational management module. This module will facilitate only to organizational executives to view, manage and handle online products, stock, sales and other organizational information.

Specialty Hospitals Essay Example for Free

Specialty Hospitals Essay Specialty Hospitals: A Problem or a Symptom? Specialty hospitals are not a new thing. However, as the number of specialty hospitals increases there is a question about their financial influence on the community hospitals. This paper discusses the results of two congressionally mandated reports on specialty hospitals. Main Concerns about Specialty Hospitals: 1. Clinical decisions made by physician-owners might be distorted by financial incentives 2. Specialty hospitals treat less complex, more profitable cases 3. Specialty hospitals do not treat uninsured or underinsured patients 4. Patient selection by specialty hospitals hurts community hospitals Congressionally Mandated Reports: The MedPAC report: Some of the positive findings according to MedPAC analysis on specialty hospitals are: better control over hospital operations, more organized schedule time in the operating room, operation’s room effectiveness, and more successful cooperation with the staff. In addition, MedPAC could not prove that the difference in financial performance affects efficiency at specialty hospitals. One of the main concerns that MedPAC had found was that if the number of the specialty hospitals increases significantly community hospitals could lose a lot of their patients. The other problem that MedPAC reported was that specialty hospitals are more likely to treat more- profitable patients. In order to improve payment accuracy, MedPAC recommended to refine of DRG’s and to revise the way the DRG relative weights are calculated. MedPAC also recommended to extend the moratorium until 1 January 2007 and to give HHS right to permit gain-sharing arrangements between physicians and hospitals in order to protect the quality of care and decrease the financial misunderstanding. The HHS report: Results of the report showed that community hospitals had more complicated cardiac patients than in cardiac specialty hospitals. However, cardiac hospitals had as good or even better care than care at their competitor hospitals, patient satisfaction was very high, rooms were larger and more quit, food was better, and specialty hospitals had sleeping rooms for the family members. The total proportion of net income devoted to uncompensated care and taxes combines exceeded the community hospitals’ net revenue for uncompensated care. HHS recommendations were the same as MedPAC recommendations. Conclusion: The disagreement over specialty hospitals even more points out that the payment system and the health care financing system need significant improvement. One of the things that could be done is to reconsider the position and potential status of facilities that apply to be treated. Also, the various payment systems could provide consistent payments for similar services across settings which would reduce the role of financial incentives. All these proposals have been discussed earlier, however, they all have been hard to build up and apply. Questions to class discussion: 1.

Applying Anticipatory Logistics to Business Essays -- essays research

Applying Anticipatory Logistics to Business What is anticipatory logistics? It’s a system made of information which anticipates the requirement of customers needs so suppliers can provide adequate service production to meet their needs. Anticipatory logistics is part of the supply chain management which is how things get from the manufacturer to the customer, but it also is the raw materials that are needed in manufacturing. The U.S. Army uses Anticipatory logistics in their supply chain to manage ammunition, maintenance and fuel needs; they use C4I which stands for computer, command, control, communication and intelligence along with other DOD military branches. Logistics are part of military operation and knowing when solders will need new equipment in the field takes planning and coordination through the supply management board. In this paper I attend to describe anticipatory logistics and why it works well for the army and that is should be used in corporate business. To understand more about anticipatory logistics, it’s important to understand the supply chain management. The supply chain involves how things get from the manufacture to the end user, but its is also how materials which is needed for manufacturing get to the manufacture and the company that makes the goods from them who is the end user in a supply chain of command. If the supply chain isn’t managed correctly, there could be delays in production process or there would be too many shipments and not enoug...

I Admire

I admire a lot of people but the person I admire the most is my mother . She is the most important person in my life. There is no reason for me to live without her by my side. My mom is a veterinary doctor. She loved to help other because she says it was her dream when she was a child. She works hard every day and she likes to learn something new every day. She leads a wonderful family life; she is always cheerful and. She has been married for 3 years. I admire her because she is very intelligent, ambitious and she has many goals in her life.She takes care of us because she loves us. She is also a wonderful mother, very patient, sensitive and warm-hearted. She knows answers to every question, even those she’s very silly. Mom is so patient and sensible, even when she helps others to solve their problems. She is great fun to be with because she has a great sense of humor. My mother has many talents. She is a great runner, a good singer. Generally, Mum is a warm and friendly pers on. She is very patient and careful with everything that she does.She never lets social life get in the way of our relationship. She says that family is the most important things    in her life. She is very important to me, because she teaches me to be a better person every day. She is a good example to me and I love her for many more reasons. I admire my mom so much and I love her. She can always advise me. She wants the best things for our family . I want to be like her when I grow up and even if we were a thousand miles away our hearts will always be together and forever.

Tracing Human History The Stone Age to the Middle Ages

The Effects Of Social Media On Society Today - 1569 Words

These researchers were determined to find out if the fear of missing out (FOMO) correlates directly with the use of social media in society today. There have been many concerns raised regarding the over engagement of social media sites by young adults and adolescents today and the effects this use may have on their mental health and general functioning. This paper is organized according to trends that were identified in the findings of some of the reviewed scholarly sources. Definiton You, the reader, may be asking yourself, what exactly is the fear of missing out? The fear of missing out also known as FOMO, is that uneasy and sometimes consuming feeling that you’re missing out . That others are doing, know about or in possession of†¦show more content†¦Mostly all of the participants filled out a basic demographic questionnaire giving information and details about their gender, race, age, background, and makeup. All of the research groups made it a mission to find a diverse group of individuals to study and ensure that they all had differing backgrounds in order to get an accurate representation of what is going on for all members of this generation. Perspective In the past couple of years there has been a lot of research looking to find a correlation between social media use and the fear of missing out. Before social media became such an epidemic the fear of missing out and anxiety were not such a prevalent issue. Findings of a negative association between self worth and the use of social media are offering a new insight into mental health. These findings are giving caregivers an opportunity to offer patients a diagnosis as well as help if they come in struggling with similar issues. Developing Trends in Ongoing FOMO Research Social Media Use The most common thread throughout all of these researchers articles is the use of social media. Baker, Krieger, and LeRoy express that â€Å"FOMO relates to social media use both in its experience thus, research on social media use is important to consider in the current investigation.† With the rapid popularity gain andShow MoreRelatedexample of informative speech outline Essay examples899 Words   |  4 PagesOUTLINE Informative Outline Topic: Impact of Media in the Society and Individual General Purpose: To Inform Specific Purpose: To inform my audience the negative impact of social media in the society and to the individual. Thesis: Social media websites are some of the most popular haunts on the Internet. They have revolutionized the way people communicate and socialize on the Web. I. Introduction A. Attention Getter: Today, just about everyone depends on information and communicationRead MoreMass Media And Its Impact On Society1719 Words   |  7 PagesIn today’s world society believes that mass media plays a key role in shaping and communicating our culture. 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