Thursday, November 28, 2019

Most People Say Being Stupid Will Lead No Where. They Essays

Most people say being stupid will lead no where. They claim that it is the worst possible condition in which to spend one's life, and if possible, it should be completely avoided. They would even suggest if the symptoms of stupidity are caught in the early stages, it could easily be treated by a surgeon. The most effective method used to do this is the chainsaw technique, later described in volume two. Yet, perhaps if people took a closer look at some of the advantages stupidity had to offer, they wouldn't have such a negative attitude toward it. After reading this paper, one will understand the advantages of stupidity. Admittedly, stupidity has certain disadvantages. Life isn't a bowl of cherries. And being stupid doesn't make it any fruitier. Being stupid can annoy even the most sensitive people. If one acts stupid, and does it in the wrong crowd, like a group of adults, it will seem more immature than funny. If one is forced to act stupid while dealing with lower life forms, for example, high school teachers, one may encounter barriers such as cruelty and insensitivity, with the utterance of statements like, "Think with your head straight!" or, "You have a brain, use it." Yet these are all true, there are still many advantages to stupidity. The first advantage is very easy to understand. Stupid people are never asked to do a lot. Many have noticed that people tend to steer away from someone they feel may be stupid. This is for a very good reason. The stupidity which they posses makes a name for themselves, a name which can be very difficult to shake. Possibly, it is a word which describes the working habits of the person, such as"crappy". Yet, this creates a positive situation for the stupid person. They will have a lot of free time on their hands for more of lifes truly meaningful pleasures. Some of these activities are combing facial hair, and counting the pixels on a Sony TV. Now, there has been a rumour going around that suggests that stupid people have low expectations. This is true. They are so stupid that they don't realize great from O.K. They could have a Sanyo cordless phone, but would probably choose instead a Pierre Cardin alarm clock telephone, because it comes free with their sensamatic folding bed. And someone with the"advantage" of stupidity might have a hard time doing certain tasks, or setting things up. Yet this isn't all bad. For example, if a stupid person leaves the chore, and comes back to it later, no one will be able to understand it. Would they get fired from their job? No. For the very simple reason that no one would understand their work except for them. The job would have to be given back to the stupid person, perhaps with a higher salary, or someone would do it for them, leaving them with even more free time! Free time is great for brainstorming (Admittedly this seems to be a bad choice of words!). Yet the ideas stupid people create tend to be original. For example, when was the last time someone stupid said something, and made one think about it? It seems that people are always talking about someone elses dumb idea. An example of such an idea would be, "How many stories will that english teacher drop before having a stroke?" This would suggest that stupid people may have the upper hand when it comes to thinking up original ideas. In fact, the next time someone wants an original idea for something, they should try talking to their local, community stupid person. The reason for this is that while a stupid person thinks with his head, he does not do so an organized manner. This is why they have so much creativity. By thinking in this fashion, their ideas have a natural tendency to flow more easily, without the interruptions which occur from the editing of thoughts that logical people would have normally. Thus if someone else should say to one, "That was a stupid idea!" one should merely look that person straight in the eye, and say, "Thank-you!" This also means that the claim, "Stupid minds think alike." is not true. All stupid minds have different ideas, each idea being original. One of the final advantages of stupidity is that stupid people are always remembered, even after graduation day. It has been noticed how a quiet person is always hard to detect, and often remains anonymous. There is a very good reason for this. The mind has a hard time keeping quiet people in its memory track. But it

Monday, November 25, 2019

Legalization Oof Marijuana

Legalization Oof Marijuana Legalization of Marijuana The use of marijuana is legal today for medicine purposes. However, when California Proposition 215 was proposed in 1996, it caught the attention of the general public and became a major issue. There were supporters and, of course, opponents of this Proposition.Many doctors said that marijuana is helpful in treatment of AIDS, glaucoma, arthritis, migraine headaches, multiple sclerosis and spasticity. Besides the above, use of marijuana also relieves the pain that cancer causes and relieves the nausea that is associated with chemotherapy that the patients have to undergo. Supporters of the proposition know that marijuana is not a risk free drug. However, they believe the doctors would weigh the benefits and risks against each other before prescribing it to patients. The main argument favoring this proposition is that marijuana relieves the pain of patients suffering from cancer and AIDS. Supporters believe that it is a humane act in passing proposition 215 to help these patients that are in great pain.English: Man holding a California state-issued car...

Thursday, November 21, 2019

Entrepreneur interview & Personal Analysis Essay

Entrepreneur interview & Personal Analysis - Essay Example A decision maker, leader, communicator and a good team player is what an entrepreneur is. This paper provides an analysis of the personality of a small business entrepreneur. Entrepreneurial Interview This paper deals with analyzing and conducting the reflective study of the small business entrepreneurs. The interview conducted here reflects upon the background, motivating factors and personalities of the businessmen. The survey questionnaire contains 15 questions which are aimed upon discovering the personality traits and capacities. The survey has been conducted with the owner of fashion boutique, Ellen Sandry. Ellen has been a successful entrepreneur for a few months and has been really successful in quite a short time. Fashion industry has motivated him a lot and considering the interests, the interview responses have been analyzed below: What is you educational background? Ellen has studied fashion designing at a reputable institute and this education aroused interest in pursuin g the field of fashion as his personal career. Besides interest, Ellen feels that the scope of fashion industry has gained great heights in the present era and thus, it would be a good initiative to take up. What have your previous experiences been? The entrepreneur’s response to this question was amazing as he mentioned many experiences that he has been through recently. He has taught, worked as a steward at a hotel and interned at a local bank for a while. Later on, his professional enthusiasm compelled him to start his own business. How did you get into this business? In reply, Ellen mentioned that his interest brought him into this business. He had a passion for colors, beauty and money. Thus, this capacity seemed to be suitable. How many employees do you have? Ellen has only two people who look into his business. He calls them his helpers and pays them a good salary at the end of every month. They manage his boutique on a daily basis and even stay overtime and help Ellen wind up the necessary tasks. How do you finance your business? Ellen mentioned that he already had enough capital at the time of initiation of his business. Besides this, he takes small loans from the financial institutions and invests them into business. What have been the major challenges that you have countered while initiating and managing the business? Ellen Sandry has been a successful owner of a small boutique and earns good profits every month. According to him, it is necessary to take risks and accept challenges with good entrepreneurial skills. During the starting up of his fashion boutique, he had to counter the shortages of finance, skilled labor, and inventory. Moreover, decision-making was an area where he was not much confident. Besides this, arranging for a considerably sophisticated infrastructure also became a problem which he quickly managed with the help of his own skills. Do you take social and environmental factors into consideration? To this Ellen replied tha t while starting up his boutique, he assured that it will not create any negative externalities for the society. He took care of all the security standards, societal costs, and made sure that the environment is not affected from the existence of his business in any way. How does the economic environment impact your business? The economic booms and depressions impact all the businesses and similarly,

Wednesday, November 20, 2019

Information Security Managment Essay Example | Topics and Well Written Essays - 5000 words

Information Security Managment - Essay Example the operations of the organization are protected and would ensure the organization of achievement and change in its execution inside the business and in this manner an ascent in the change and proficiency of an associations operation inside the organization1. This risk appraisal returns from the prior research that was carried out by the administration. The exploration was led by the Tesco UK supermarket administration. The IT office directed a security review inside the firm to use the methodology and guaranteed successful evaluation of the usage of meetings surveyed by the different departmental heads2. Just like in every risk appraisal, there has to be a team that would undertake the various roles in order to meet the desired goal or the exercise3. The group that surveyed the security and trustworthiness of the association and made recommendations included: This step helps in identifying the vulnerabilities that relate to the operation of Tesco UK supermarket. This will be a great boost the different vulnerabilities and a number of frameworks that the company to ensure efficiency in its operation.4. The process followed in identification of the risks involved assessing the previous risks carried out within the organization and the level at which the information system of the company has the information effectively addressed in order to avoid the occurrence of more threats within the firm. In addition, the likelihood of the of a number of susceptibilities within the company are also effectively addressed so that the operations can take place smoothly5. The team also reviewed the means through which the employees operated in the firm in order to know the means through which the company6. The team also looked at the safety of the various data storage devices within the firm to confirm if there was any form of malware that would affect the system. NB: Advising the company on the same is somewhat hard - the $8100 and $3000 are real amounts of money that need to

Monday, November 18, 2019

A Comparison of and Contrasting of role of two politicians in the Essay

A Comparison of and Contrasting of role of two politicians in the media eye - Essay Example He further notes that the independence of media from political meddling and the essence of media as the way they play their political roles, the manner in which media is subjected to pressures from the commercial systems that fund the media entities as well as the decisiveness of the government in supplying information all have a great deal to do with the maturity of democracy and the propagation of public opinion driven societies. The functionalities of media have made it a vulnerable tool subjected to use and albeit abuse by those in power bent on swaying public opinion and influencing popular opinion on individuals and issues among other things. In these perceptions premise, the paper presents a comparative exploration of the role of two politicians in the media eye. The paper will also take a significant thrust in examining the coverage of two politicians and exploring their images as portrayed in various mainstream media. The thrust of the paper will also entail the ways in which the media and or the politicians attempt to manipulate the images of them as generated by the media. For the objectives of the exercise, two political figures who are the 2008 USA Presidential election candidates Republic John McCain and Democrat Barrack Obama will be used. The 2008 US presidential campaign trail is historic from various dimensions. The campaigned has pitted sitting Senators yet the most remarkable aspects of the campaign are based on the fact that after the election US will have either the first Black American president or a woman as vice president. The election campaign has drawn most media coverage surpassing previous presidential election drives.... ting Senators yet the most remarkable aspects of the campaign are based on the fact that after the election US will have either the first Black American president or a woman as vice president. The election campaign has drawn most media coverage surpassing previous presidential election drives. The paper will make an observation of extracts and nuances form mainstream and global media channels like Cable News Net Work (CNN) and the British Broadcasting Network (BBC) and various online news interfaces to examine the images of the two politicians that have been carved and explore the ways in which media and the political figures have to attempted to manipulate the images created of them. CNN is one of the leading global news channels and has had a significant bearing on the image creation and dissemination of the US presidential candidates. It is worth mentioning from the onset that CNN were the 8th largest sponsors to the sitting President George W. Bush in his 2004 Campaign. Nonetheless it may be presented that mainstream media have tended to playing to a perceived public sentiment that the Bush administration has failed the electorate on various issues and hence the unpopularity of the Republican election ticket regardless of who the actual individuals and their polices are. Many media channels have largely portrayed the democrat candidate Barrack Obama in manner of glossing over his possible nomination as historic development in American politics demonstrating the American society commitment to values of racial reform and egalitarianism. CNN has always hammered the nuances of 'historic' ticket aspect that Obama's candidature is. Besides the presenting of Obama's ticket as historic development, CNN has captured various political and economic analyses from some

Friday, November 15, 2019

Pulmonary Hypertension Syndrome in Fast-growing Broilers

Pulmonary Hypertension Syndrome in Fast-growing Broilers This study investigated variations of plasma angiotensin II and gene expression of renin, angiotensin converting enzyme (ACE) and angiotensin II type 1 receptor (AT1R) in the heart of pulmonary hypertensive chickens. Plasma angiotensin II was significantly increased at 28 days of age (P1R was increased at 12 and 42 days (P1R and ACE transcripts in the left ventricle of the treated group were increased at days 12 and 42 respectively compared to controls (P1R mRNAs were relatively upregulated in heart of chickens developing pulmonary hypertension while considerable reduction of renin/ACE and elevation of AT1R in right ventricle of heart may involve in dilated cardiomyopathy. Key words: Renin-angiotensin system, Pulmonary hypertension, Broiler chicken. Introduction Pulmonary hypertension syndrome (PHS, ascites) in fast-growing broilers is an elevated blood pressure within the pulmonary circulation (Baghbanzadeh and Decuypere, 2008). Pulmonary hypertension initiates the sequential development of hypoxemia, right-sided congestive heart failure, central venous congestion, cirrhosis of the liver, and accumulation of ascitic fluid into the abdominal cavity (Balog, 2003). It is commonly accepted that PHS in fast-growing broilers is a direct effect of right atrioventricular valve insufficiency, ventricular volume overload and right ventricular dilation and failure (Baghbanzadeh and Decuypere, 2008). In PHS, a high vascular resistance due to an anatomically inadequate pulmonary vascular capacity and excessive vascular tone reflecting an imbalance between pulmonary vasoconstrictors and vasodilators has been demonstrated (Wideman et al., 2013). Many vasoactive elements are involved in the pathophysiology of PHS such as norepinephrine, thromboxane,endothe lin, serotonin, nitric oxide, prostacyclin and angiotensin II (Teshfam et al., 2006, Hassanpour et al., 2009, Hassanpour et al., 2011, Wideman et al., 2013). Pathophysiologic alterations in the cellular and molecular levels of this syndrome have been noted (Kim and Iwao, 2000, Sato et al., 2012, Hassanpour et al., 2013a, Hassanpour et al., 2013b). Angiotensin II (Ang II) is the central active component of the renin–angiotensin system (RAS) that plays a major role in regulating the cardiovascular system, and disorders of the RAS contribute largely to the pathophysiology of hypertension, renal disease and chronic heart failure (Dostal and Baker, 1999). This system is an ever-evolving endocrine system with considerable checks and balances on the production and catabolism of angiotensin peptides most likely due to the manifold effects of angiotensin (Putnam et al., 2012). In the RAS, a precursor peptide, angiotensinogen, is cleaved by renin to form the decapeptide angiotensin I. The dipeptidase angiotensin-converting enzyme (ACE) cleaves angiotensin I to form the octapeptide angiotensin II (Levy, 2004). Ang II, through the activation of specific Ang II types 1 and 2 receptors (AT1R; AT2R), regulates cardiac contractility, cell communication, and impulse propagation. In addition, Ang II is involved in cardiac remodeling, gro wth, and apoptosis (Paul et al., 2006, Ferreira et al., 2008). The concept of a local RAS located in the heart with autocrine and paracrine roles has been confirmed in mammals by many studies, particularly with the demonstration that elements of the RAS and Ang receptors are present in cardiac tissue (De Mello and Danser, 2000). The objective of this study was to determine plasma angiotensin and the relative amounts of renin, ACE and AT1R mRNA expression in the heart ventricles (right and left) of broiler chickens with pulmonary hypertension experimentally induced by 3,5,3†²-l-triiodothyronine (T3). This hormone increases metabolism via increasing number and size of mitochondria and stimulation of the cell membrane enzyme Na+-K+ ATPase), thus, increases oxygen consumption and requirement (Griffin and Ojeda, 2000). The increased body demand for oxygen prompts an increase in cardiac output. High cardiac output triggers an increase in lung arterial pressure, presumably because of the low compliance of the pulmonary vasculature (Balog, 2003). Materials and methods Birds and treatments A total of 60 One-day old male Ross 308 broiler chickens were assigned to a control or treatment group (30 birds per group). Each group was randomly divided into three equal replicates of 10 chickens per pen. The chickens were reared for seven weeks on wood shavings under standard conditions and provided ad libitum access to water and a standard ration (Starter: 12.6 MJ metabolisable energy (ME)/kg of diet, 230 g/kg crude protein (CP), Grower: 13.2 MJ ME/kg of diet, 210 g/kg CP, Finisher: 13.4 MJ ME/kg of diet, 190 g/kg CP formulated) to meet requirements for broilers . In the treatment group, T3 was included in the basal diets at a concentration of 1.5 mg T3/kg after day 6 of rearing period (Hassanpour et al., 2013a). Throughout the study mortality was recorded daily. Those broilers that died during the experimental period were examined for lesions of heart failure and ascites. The Institutional Animal Care and Use Committee of Ahvaz and Shahrekord Universities approved all procedures used in this study. Assessment of right ventricular hypertrophy At 12 and 42 d of age, six chickens from each group were selected at random, weighed and killed by decapitation. The heart was resected and right ventricle hypertrophy was estimated as described by Teshfam et al. (2006). The ratio of right ventricle to total ventricle (RV/TV) was calculated as an index of pulmonary hypertension. Chickens with an RV/TV ratio >0.28 were classified as pulmonary hypertensive chickens (Wideman, 2001). The right and left ventricles of the heart were immediately frozen in liquid nitrogen and stored at -70 °C for subsequent RNA analysis. RNA extraction and cDNA synthesis In this experiment, frozen ventricular tissues which had been prepared in the aseptic condition, were homogenized in a liquid nitrogen bath. Total RNA from right (six samples from each group at 12 and 42 days) and left ventricles (six samples from each group at 12 and 42 days) was extracted by a guanidine / phenol solution (RNx plus, Sinaclon Bioscience, Karaj, Iran). 100 mg of homogenized tissue was prepared in this solution. The homogenate was then mixed with chloroform. The resulting mixture was centrifuged (9000 rpm, 4 °C, 15 min), yielding an upper aqueous phase containing total RNA. Following 100% isopropanol precipitation, the RNA pellet was washed with 75% ethanol. The RNA samples were resuspended in DEPC-treated water. Total RNA was treated with RNase-free DNase (Sinaclon Bioscience, Karaj, Iran) to avoid amplification of contaminating genomic DNA. RNA was evaluated by agarose gel (1.5%) electrophoresis to determine extracted RNA quality as indicated by discrete 18S and 28 S rRNA bands. The amount and quality of RNA were determined by spectrophotometry. Only RNA of sufficient purity, having an absorbance ratio (A260/280) greater than 1.9, was considered for synthesis of cDNA. Total RNA was reverse transcribed into cDNA in a short time after extraction (less than 6 hours) using M-MLV reverse transcriptase (Sinaclon Bioscience, Karaj, Iran) as described by Hassanpour et al. (2010). The reverse-transcription (RT) was done in a 20  µl volume containing 2  µg of extracted RNA, 200 ng random hexamer, 0.5 mM dNTP. This mixture was heated to 65 °C for 5 min, and 40 u of RNase inhibitor, RT buffer (50 mM Tris-HCl, 75 mM KCl, 3 mM MgCl2), 10 mM DTT and 200 u M-MLV reverse transcriptase were added. This mixture was incubated for 5 min at 25 °C, followed by 50 min at 38 °C. The reverse transcription mix was heated to 75 °C for 15 min to denature the RNA and then stored at -20 °C. Quantitative real time PCR Analysis In this study, relative quantification of real time PCR was used to measure changes in a gene expression in response to T3 treatment. The levels of renin, AT1R, ACE and ÃŽ ²-actin transcripts were determined in the six samples of right and left ventricles from each group at 12 and 42 days by real-time reverse transcriptase (RT)-PCR using Eva-Green chemistry (Sinaclon Bioscience, Karaj, Iran). This method requires a suitable internal standard to control for variability between samples and to normalise the input load of cDNA. ÃŽ ²-actin was used as an internal standard. Specific primers of Renin, AT1R, ACE and ÃŽ ²-actin were designed with Primer-Blast (www.ncbi.nlm.nih.gov/tools/primer blast/index.cgi?LINK_LOC=blastHome). The expected products of primers in PCR were checked in Nucleotide-Blast (www.blast.ncbi.nlm.nih.gov/Blast.cgi?PROGRAM=blastnPAGE_TYPE=BlastSearchLINK_LOC=blasthome) which found no similarity with other chicken genes. Primers are listed in Table 1. PCRs were carried out in a real-time PCR cycler (Rotor Gene Q 6000, Qiagen, USA) in three replicates for each sample of ventricles. 1  µl cDNA was added to 4  µl Titan Hot Taq Eva-Green Ready Mix (Sinaclon Bioscience, Iran), 0.5  µM of each specific primer in a total volume of 20  µl. The thermal profile was 95 °C for 5 min, 35 cycles of 95 °C for 40 s, 60 °C for 35 s and 72 °C for 30 s. At the end of each phase, fluorescence was assessed by the real-time PCR cycler and used for quantitative objectives. The no-template control and no-reverse transcriptase control were used to check contamination in the PCR reagents. Gene expression data were normalized to ÃŽ ²-actin. Data were analyzed using Rotor Gene-software, version 2.0.2 (build 4) (Qiagen, USA) and LinRegPCR software version 2012.0 (Amsterdam, Netherland), to give the threshold cycle number and reaction efficiency (Ruijter et al., 2009). Relative transcript levels and fold changes in transcript abundance were calculated using eff iciency adjusted Livak methodology (à ¢Ã‹â€ Ã¢â‚¬  Ãƒ ¢Ã‹â€ Ã¢â‚¬  CT method) (Livak and Schmittgen, (2001). Measurement of angiotensin II in plasma The six chickens per group at 12, 21, 28, 35 and 42 days were selected for blood collection. Blood samples were collected from the brachial vein in heparinized syringes and centrifuged at 2,500g for 10 min to obtain plasma. The total amount of Ang II plasma level was quantified by using a commercially available Ang II-EIA kit (catalog No.: S-1133, Bachem Chemical Company, Germany) following the manufacturers instructions. Plasma proteins was precipitated as follows before the use of this kit. Briefly, 1 mL plasma was mixed with 2 mL acetone and centrifuged (10000 rpm, 4 ºC, 10 min). The supernatant was extracted with 4 mL petroleum benzine and left at room for 30 min. After discarding the ether phase, the aqueous, lower phase containing the angiotensin was evaporated to dryness at 40 ºC. The dried extracts were redissolved in 0.25 mL assay buffer (0.1 M Tris-HCl, (pH=7.4), 3 mg/mL bovine serum albumin and 2 mg/mL neomycin sulfate) and stored at -20 ºC prior to assay (Gray and S imon, 1985). The materials for protein precipitation were purchased from Sigma-Aldrich Chemical Co. The Ang II-EIA kit is an in vitro quantitative assay for detecting the angiotensin II peptide based on the principle of a competitive enzyme immunoassay (competitive binding to the Ang II antibody between biotinylated Ang II peptide and peptides in samples). This kit has intra-assay variation Statistical analysis Data are represented as mean  ± SE. Comparisons were made using an independent sample t-test between each treatment and its control. Statistical analysis was done using SPSS-16 software (SPSS Institute Inc.). All data were checked to have a normal distribution and log transformed if necessary. Any data requiring log transformation were back-transformed for presentation of data. P values less than 0.05 were considered significant. Results Estimation of right ventricular hypertrophy The RV/TV ratio was greater in the treated groups at 42 days of age (0.303  ± 0.021) than controls (0.215  ± 0.017) (P=0.004), while this ratio was not significant at 12 days (control: 0.154  ± 0.014; treatment: 0.171  ± 0.012) (P=0.091). The increase of RV/TV ratio was 29% at 42 days. The clinical signs of ascites was observable in the most treated chickens at the end of rearing period. Expression of renin, AT1R and ACE genes in the right and left ventricles Real-time PCR results of renin, ACE and AT1R genes are shown in Figs. 1–3. The expression of ÃŽ ²-actin was detected in all samples. The renin, AT1R and ACE genes were expressed in the right and left ventricles of control and T3-treated broilers at 12 and 42 days of age. The relative amount of renin mRNA expression in the right ventricle of the treated groups was significantly increased at 12 days (15.5 fold) (P=0.009) and decreased at 42 days (4 fold) of age compared to controls (P=0.012; Fig. 1). The relative amount of ACE mRNA expression in the left ventricle of the treated group was significantly increased (9 fold) at 42 days of age compared to controls (P=0.008), but did not differ at 12 days of age (Fig. 2). In the right ventricle, the expression of this gene was increased (2.9 fold) at 12 days (P=0.031) while decreased (3 fold) at 42 days of age in the treated group compared to control (P=0.024). The relative amount of AT1R mRNA expression in the right ventricle of the treated group was significantly increased at 12 (5.9 fold) (P=0.036) and 42 (3.7 fold) (P=0.044) days of age compared to control. In the left ventricle of the treated group, the mRNA amount of this gene was only higher (3.9 fold) at 12 days of age than control (P=0.043; Fig. 3). Assessment of plasma angiotensin II The level of Ang II was measured in plasma samples of chickens at 12, 21, 28, 35 and 42 days of age. The amount of Ang II was significantly increased in T3-treated chickens only at 28 days of age when compared with control (P=0.041; Fig. 4). In this study, total mortality was 23.3% for treatment group and 3.3% for control group. Discussion In the present study, the effect of T3 hormone was observed at 42 days of age which increased cardiac index (i.e., RV/TV > 0.28). According to Wideman (2001), this high cardiac index is associated with sustained pulmonary hypertension (significant high blood pressure of pulmonary artery and right ventricle). In T3-treated chickens of our experiment, cardiac index was not critically high to be noticed as pulmonary hypertension at 12 days of age. Thus, any alterations in cardiac RAS gene expression at this age were not related to this syndrome (Klein and Danzi, 2007, Vargas et al., 2012). Ang II, apart from its effect of elevating arterial pressure, exerts mitogenic and growth promoting effects on cardiac myocytes; both of these effects contribute to the development congestive heart failure (Varagic and Frohlich, 2002). In our experiment, the amount of plasma Ang II considerably was higher at 28 days of age and so at this time of rearing period could be critical in the incidence of PHS , as previously suggested by Hassanpour et al. (2011). However, our data showed that Ang II may be involved as an important factor in the induction of PHS, but its role in the development of this syndrome and heart dilation is not predominant, versus PHS in mammals (Wollert and Drexler, 1999). It must be noticed that hyperthyroidism increases degradation of proteins far exceed synthesis (Decuypere et al., 2005). Thus, variation of Ang II amount during rearing period of chickens could be affected by excess T3. At 42 days of age, cardiac index was considerably high to cause heart failure and PHS. It is noticed that this stage could be associated with heart dilation, which may differ cardiomyocytes structurally and functionally from hypertrophic stage (Lowes et al., 2002, Hassanpour et al., 2013a). Thus, alternations in the expression of mentioned genes in the heart ventricles, particularly in the right ventricle, which was more affected by PHS than the left ventricle, could be due to dilated cardiomyopathy. Renin mRNA has been detected in the heart of various species (Paul et al., 2006). Pieruzzi et al. (1995) described that volume overload of heart was able to increase renin mRNA in the rat heart. In contrast, Iwai et al. (1995) were unable to confirm these findings. In the present study, mRNA variations of this gene were not considerable in the left ventricle of the treated chickens while in the right ventricle, conspicuous increase (12 days) and decrease (42 days) were observed. The initial increase of renin mRNA may be influenced by volume overload of heart due to thyroid hormone while consequent decrease of this gene could be due to occurrence of the PHS. As previously mentioned, the end stage of PHS could be associated with dilated cardiomyopathy of the right ventricle in which cardiomyocytes are unable to contract properly. Apparently, this disability occurs in the expression of many genes (Ladenson et al., 1992, Lowes et al., 2002, Teshfam et al., 2006, Hassanpour et al., 2013b) . A reduction of renin mRNA in the right ventricle may be due to negative compensatory feedback of cardiomycytes against high activation of systemic RAS (high plasma Ang II). It may be also noticed that T3 initially stimulates expression of genes (such as renin) and then, suppresses transcription in long time, similar to its effect on protein (Ruckebusch et al., 1991). Further, the elevation of ACE mRNA might be influenced by thyroid hormone and initial induction of hypertrophy in the heart ventricles, while the reduction of this transcript occurred in the dilated right ventricle at the end stage of PHS. Hao et al. (2013) reported an increase of ACE mRNA and concentration of Ang II in the right ventricular tissue of cold stress-chickens at 42 days of age. This apparent discrepancy between our results and study of Hao et al. (2013) could be due to different routes in the induction of PHS. Comparison of cardiac index in these two studies confirms that induction of PHS with T3 was more severe than cold stress. Probably, the right ventricular remodeling in the cold stress-chickens was not completely progressed. Thus, it could be logical reason for increasing of ACE mRNA and Ang II in the hypertrophic right ventricle. The increasing of AT1R in the heart hypertrophy and heart failure has been confirmed (Barlucchi et al., 2001, Diniz et al., 2007) which is in relative agreement with our findings. Wollert and Drexler (1999) reviewed that AT-receptors-dependent signaling cascades potently modulate cardiac myocyte function and growth. They also reported that cardiac hypertrophy in response to haemodynamic overload can occur independently of the AT-receptors. In conclusion, the gene expression of renin, ACE and AT1R was relatively upregulated in the heart of chickens developing PHS. The right ventricle of hearts from pulmonary hypertensive chickens showed considerable reduction of renin, ACE and elevation of AT1R which may be involved in dilated cardiomyopathy.

Wednesday, November 13, 2019

Confession of the Jews and First Confession :: Confession of the Jews Essays

Confession of the Jews and First Confession In comparing the books "Confession of the Jews" and "First Confession", I have found there to be similarities and differences. For example, "First Confession" deals with a boy converting from a boy to a young man by going to confession and telling his sins for the first time. "Conversion of the Jews" deals with converting a boy into someone he has never really seen which was a free thinker which only older people usually do. In "Conversion of the Jews" Ozzie, who was the main character, had a problem with getting along with the priest Rabbi Binder at Hebrew School. Rabbi Binder didn't really like Ozzie because he was always asking a lot of questions and Rabbi Binder was always getting angry at him. In "First Confession" Jackie, the main character, also had a problem. Jackies problem was similar to Ozzies, but also different. Jackie had a problem with his sister Nora. Nora believed that Jackie was always lying and being bad. On his confession day his mother sent Nora go with Jackie. Nora ordered Jackie to tell all of his sins, including how he was mean to the grandmother who lived with them. Ozzie seemed troubled to Rabbi Binder in "Conversion of the Jews". In reality Jackie wasn't bad at all, he was just a boy who wanted answers to his questions. And that was proved when Ozzie asked a question in class and Rabbi Binder went crazy and hit Ozzie because he thought Ozzie was trying to be a wise guy. So Ozzie tried to prove a point to Rabbi Binder and his fellow classmates by running to the roof and making believe he was going to jump. With Ozzie being on the roof it gave Rabbi Binder a bigger belief that Ozzie was crazy and troubled. Ozzie wasn't really crazy, he was just trying to make a point that he really wasn't dumb. Ozzie just wanted to believe that there was really a Christ. So with the point that Ozzie was trying to make helped to convert everyone and their beliefs. Jackie, like Ozzie, was also troubled in "First Confession". He was a young boy who lived with his family, including the grandmother. Jackie believed the grandmother didn't like him very much, so he did mean things to her like hide under the table when she cooked dinner. When it came time for his first confession he went with his sister Nora. Nora tormented Jackie and scared him into believing he was a sinner and he will pay for all of his sins.