Thermodynamic activity

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my page - www.hostgator1centcoupon.info Template:Inadequate lead Before you decide whether stainless steel cookware is worth shopping for, lets first discuss what chrome steel cookware is. Chrome steel is made from an alloy, or a mixture of metals. Mostly, fundamental iron with chromium, nickel or another minor metals. The chromium supplies rust safety and provides your cookware durability. The nickel provides rust safety as properly, and provides a sophisticated look. Most effectively made stainless steel cookware has copper or aluminum added to the underside of the pan or pot. That is accomplished to increases the power of the pot or pan to conduct warmth.
In case you loved this post and you would like to receive more information regarding stainless steel cookware reviews please visit our page. The most effective stainless steel cookware is the primary category, however nonetheless it is divided into a number of subcategories based mostly on the standard and the price vary. It can be confusing to decide on the perfect stainless-steel cookware out of the categories that can meet your requirements. This is where we took a step ahead to elucidate you all the data that will likely be useful for you to understand how to choose the best stainless steel cookware. One of the best chrome steel cookware set is manufactured from low-cost to costly and high quality constructed pots and pans.
You can find magnetic stainless-steel in the layer on the outside of some quality pieces of stainless-steel. That is to make it appropriate with induction stovetops, which involve the use of a quickly charging electromagnetic subject to heat cookware. High-high quality chrome steel, like All-Clad , makes use of three layers of steel—the austenite layer of steel on the inside, ferrite metal on the outside, and a layer of aluminum sandwiched between the two for optimum warmth conductivity (steel alone does not conduct heat evenly). Lesser-high quality stainless-steel is normally only one layer of austenitic chrome steel.
Aesthetically speaking, stainless steel is a clever selection if you prefer to display or hang pots or pans. The clear, crisp look of all chrome steel kitchenware can transform a mishmash of cookware into a complicated décor statement. Chrome steel kettles, such because the Cuisinart Tea Kettle will combine individual kitchenware into a cohesive and pleasant entity. Contemplate purchasing stainless steel utensils as effectively. Already acquired a beautiful chrome steel cookware collection? The Cuisinart Chef’s Collection stainless pot rack could be the completion for a kitchen, liberating up house and making those pots and pans readily accessible. Get the chrome steel cookware of your culinary dreams at Macy’s!
Hard-anodized aluminum cookware is likely one of the most popular sorts of material, though many people do not quite understand the development. Laborious-anodized aluminum is plain aluminum that has been processed in a series of chemical baths charged with an electric present. The result is a cloth that has the same superior heat conductivity as aluminum however is non-reactive with acidic meals, resembling tomatoes, and twice as onerous as stainless steel. Two drawbacks to onerous-anodized cookware are that it isn't dishwasher-secure and, as a result of it's not magnetic, it will not work with induction vary tops.
The enamel over steel method creates a bit that has the heat distribution of carbon metal and a non-reactive, low-stick surface. Such pots are a lot lighter than most different pots of comparable dimension, are cheaper to make than chrome steel pots, and would not have the rust and reactivity issues of forged iron or carbon metal. quotation needed Enamel over metal is good for large stockpots and for other giant pans used principally for water-primarily based cooking. Due to its gentle weight and simple cleanup, enamel over metal can also be common for cookware used while camping. Clad aluminium or copper edit
Unique specialty cookware pieces served a la carte to compliment any cookware set are constructed of a durable Stainless Metal with a brushed exterior end. Designed with an affect bonded, aluminum disk encapsulated base which distributes heat shortly and evenly to permit exact temperature management. Handles are riveted for durability and efficiency. The New Specialty Cookware is compatible for all range varieties including induction. In addition to the multi use operate, one other distinctive characteristic is backside to high interior quantity markings in each quarts and metric measurement; and each piece comes with a tempered glass lid, oven secure to 350°F.
Whether you're a cooking lovers, knowledgeable chef or simply cooking for your family you know the importance of having a completely stocked kitchen. Not only do you want the proper ingredients, however you also need the fitting instruments to get the job carried out. In any type of primary cooking training lesson, you'll study that chrome steel is your new best buddy in terms of kitchen cookware. What additionally, you will be taught is that quality cooking gear doesn't usually come at a reduced price. For this reason, it is very important take excellent care of your cookware! Listed below are some fundamentals for stainless steel care.
To combat the uneven heating drawback, most stainless steel pans are laminations of aluminum or copper on the underside to unfold the heat around, and chrome steel inside the pan to provide a cooking floor that's impervious to whatever you may put inside. In my expertise, this chrome steel surface remains to be too sticky to fry on, and for those who ever burn it you get a permanent hassle spot. However, sometimes a stainless steel cooking floor is useful when you can't use aluminum (see beneath) so I maintain some around. Choose one thing with a reasonably thick aluminum layer on the bottom.
Nicely, except you’re a metals skilled and go examine the factory where the steel is made to see whether or not their manufacturing course of creates a pure austenite with out corrosive supplies formed, you’re not going to know for sure whether or not or not the craftsmanship of your stainless is of the best quality. I feel your finest guess is to simply purchase excessive-high quality stainless steel from the start, from a brand with a repute for good quality. But, I believe I have figured out one way that you can decide if the stainless cookware you already have is potentially reactive.

Hypericum perforatum, also known as St John's wort, is a flowering plant species of the genus Hypericum and a medicinal herb that is sold over-the-counter as a treatment for depression. Other names for it include Tipton's weed, rosin rose, goatweed, chase-devil, or Klamath weed. With qualifiers, St John's wort is used to refer to any species of the genus Hypericum. Therefore, H. perforatum is sometimes called common St John's wort or perforate St John's wort to differentiate it. Hypericum is classified in the family Hypericaceae, having previously been classified as Guttiferae or Clusiaceae. Approximately 370 species of the genus Hypericum exist worldwide with a native geographical distribution including temperate and subtropical regions of Europe, Turkey, Ukraine, Russia, Middle East, India, and China.

Botanical description

Translucent dots on the leaves

Hypericum perforatum is a yellow-flowering, stoloniferous or sarmentose, perennial herb indigenous to Europe. It has been introduced to many temperate areas of the world and grows wild in many meadows. The herb's common name comes from its traditional flowering and harvesting on St John's day, 24 June. The genus name Hypericum is derived from the Greek words hyper (above) and eikon (picture), in reference to the plant's traditional use in warding off evil by hanging plants over a religious icon in the house during St John's day. The species name perforatum refers to the presence of small oil glands in the leaves that look like windows, which can be seen when they are held against the light.

St John's wort is a perennial plant with extensive, creeping rhizomes. Its stems are erect, branched in the upper section, and can grow to 1 m high. It has opposing, stalkless, narrow, oblong leaves that are 12 mm long or slightly larger. The leaves are yellow-green in color, with transparent dots throughout the tissue and occasionally with a few black dots on the lower surface. Leaves exhibit obvious translucent dots when held up to the light, giving them a ‘perforated’ appearance, hence the plant's Latin name.

Its flowers measure up to 2.5 cm across, have five petals, and are colored bright yellow with conspicuous black dots. The flowers appear in broad cymes at the ends of the upper branches, between late spring and early to mid summer. The sepalsare pointed, with glandular dots in the tissue. There are many stamens, which are united at the base into three bundles. The pollen grains are ellipsoidal.

When flower buds (not the flowers themselves) or seed pods are crushed, a reddish/purple liquid is produced.

• 
  Full plant
• 
  Seedlings
• 
  Fruit
• 
  Blossom

Ecology

St John's wort reproduces both vegetatively and sexually. It thrives in areas with either a winter- or summer-dominant rainfall pattern; however, distribution is restricted by temperatures too low for seed germination or seedling survival. Altitudes greater than 1500 m, rainfall less than 500 mm, and a daily mean January (in Southern hemisphere) temperature greater than 24 degrees C are considered limiting thresholds. Depending on environmental and climatic conditions, and rosette age, St John's wort will alter growth form and habit to promote survival. Summer rains are particularly effective in allowing the plant to grow vegetatively, following defoliation by insects or grazing.

The seeds can persist for decades in the soil seed bank, germinating following disturbance.

Invasive species

Although Hypericum perforatum is grown commercially in some regions of south east Europe, it is listed as a noxious weed in more than twenty countries and has introduced populations in South and North America, India, New Zealand, Australia, and South Africa. In pastures, St John’s wort acts as both a toxic and invasive weed. It replaces native plant communities and forage vegetation to the dominating extent of making productive land nonviable or becoming an invasive species in natural habitats and ecosystems. Ingestion by livestock can cause photosensitization, central nervous system depression, spontaneous abortion, and can lead to death. Effective herbicides for control of Hypericum include 2,4-D, picloram, and glyphosate. In western North America three beetles Chrysolina quadrigemina, Chrysolina hyperici and Agrilus hyperici have been introduced as biocontrol agents. Benefits of Residing in a Apartment or Landed property in Singapore Property New Launches & Project Showcase In Singapore Many residential Singapore property sales involve buying property in Singapore at new launches. These are often homes underneath building, being sold new by developers. New Launch Singapore Property, 28 Imperial Residences Coming To Geylang Lorong 26 The property market is slowing down, based on personal property transactions in May Cell Apps FREE Sign Up Log in Property Brokers Feedback

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Medical uses

Major depressive disorder

St John's wort is widely known as a herbal treatment for depression. In some countries, such as Germany, it is commonly prescribed for mild to moderate depression, especially in children and adolescents. It is proposed that the mechanism of action of St. John's wort is due to the inhibition of reuptake of certain neurotransmitters.

An analysis of twenty-nine clinical trials with more than five thousand patients was conducted by Cochrane Collaboration. The review concluded that extracts of St John's wort were superior to placebo in patients with major depression. St John's wort had similar efficacy to standard antidepressants. The rate of side-effects was half that of newer SSRI antidepressants and one-fifth that of older tricyclic antidepressants. A report from the Cochrane Review states:

The available evidence suggests that the Hypericum extracts tested in the included trials a) are superior to placebo in patients with major depression; b) are similarly effective as standard antidepressants; and c) have fewer side-effects than standard antidepressants.
There are two issues that complicate the interpretation of our findings:
1) While the influence of precision on study results in placebo-controlled trials is less pronounced in this updated version of our review compared to the previous version (Linde 2005a), results from more precise trials still show smaller effects over placebo than less precise trials.
2) Results from German-language countries are considerably more favourable for Hypericum than trials from other countries.

Other medical uses

St John's wort is being studied for effectiveness in the treatment of certain somatoform disorders. Results from the initial studies are mixed and still inconclusive; some research has found no effectiveness, other research has found a slight lightening of symptoms. Further study is needed and is being performed.

A major constituent chemical, hyperforin, may be useful for treatment of alcoholism, although dosage, safety and efficacy have not been studied. Hyperforin has also displayed antibacterial properties against gram-positive bacteria, although dosage, safety and efficacy has not been studied. Herbal medicine has also employed lipophilic extracts from St John's wort as a topical remedy for wounds, abrasions, burns, and muscle pain. The positive effects that have been observed are generally attributed to hyperforin due to its possible antibacterial and anti-inflammatory effects. For this reason hyperforin may be useful in the treatment of infected wounds and inflammatory skin diseases. In response to hyperforin's incorporation into a new bath oil, a study to assess potential skin irritation was conducted which found good skin tolerance of St John's wort.

A randomized controlled trial of St John's wort found no significant difference between it and placebo in the management of ADHD symptoms over eight weeks. However, the St John's wort extract used in the study, originally confirmed to contain 0.3% hypericin, was allowed to degrade to levels of 0.13% hypericin and 0.14% hyperforin. Given that the level of hyperforin was not ascertained at the beginning of the study, and levels of both hyperforin and hypericin were well below that used in other studies, little can be determined based on this study alone. Hypericin and pseudohypericin have shown both antiviral and antibacterial activities. It is believed that these molecules bind non-specifically to viral and cellular membranes and can result in photo-oxidation of the pathogens to kill them.

A research team from the Universidad Complutense de Madrid (UCM) published a study entitled "Hypericum perforatum. Possible option against Parkinson's disease", which suggests that St John's wort has antioxidant active ingredients that could help reduce the neuronal degeneration caused by the disease.

Recent evidence suggests that daily treatment with St John's wort may improve the most common physical and behavioural symptoms associated with premenstrual syndrome.

St John's wort was found to be less effective than placebo, in a randomized, double-blind, placebo-controlled trial, for the treatment of irritable bowel syndrome.

St John's wort alleviated age-related long-term memory impairment in rats.

Adverse effects and drug interactions

St John's wort is generally well tolerated, with an adverse effect profile similar to placebo. The most common adverse effects reported are gastrointestinal symptoms, dizziness, confusion, tiredness and sedation. It also decreases the levels of estrogens, such as estradiol, by speeding up its metabolism, and should not be taken by women on contraceptive pills as it upregulates the CYP3A4 cytochrome of the P450 system in the liver.

St John's wort may rarely cause photosensitivity. This can lead to visual sensitivity to light and to sunburns in situations that would not normally cause them. Related to this, recent studies concluded that the extract reacts with light, both visible and ultraviolet, to produce free radicals, molecules that can damage the cells of the body. These can react with vital proteins in the eye that, if damaged, precipitate out, causing cataracts. This finding is contradicted by the results of another recent study, which found that St John's wort inhibits free radical production in both cell-free and human vascular tissue, revealing antioxidant properties of the compound.

St John's wort is associated with aggravating psychosis in people who have schizophrenia.

Do not take St. John's wort if you have bipolar disorder. There is concern that people with major depression taking St. John’s wort may be at a higher risk for mania.

Never give your child St. John’s wort without medical supervision.

Pharmacokinetic interactions

St John's wort has been shown to cause multiple drug interactions through induction of the cytochrome P450 enzymes CYP3A4 and CYP2C19. This drug-metabolizing enzyme induction results in the increased metabolism of certain drugs, leading to decreased plasma concentration and potential clinical effect. The principal constituents thought to be responsible are hyperforin and amentoflavone.

St John's wort has also been shown to cause drug interactions through the induction of the P-glycoprotein (P-gp) efflux transporter. Increased P-gp expression results in decreased absorption and increased clearance of certain drugs, leading to lower plasma concentration and potential clinical efficacy.

Examples of drugs causing clinically significant interactions with St John's wort

Class	Drugs
Antiretrovirals	Non-nucleoside reverse transcriptase inhibitors, protease inhibitors
Benzodiazepines	Alprazolam, midazolam
Hormonal contraception	Combined oral contraceptives
Immunosuppressants	Calcineurin inhibitors, cyclosporine, tacrolimus
Antiarrhythmics	Amiodarone, flecainide, mexiletine
Beta-blockers	Metoprolol, carvedilol
Calcium channel blockers	Verapamil, diltiazem, amlodipine
Statins (cholesterol-reducing medications)	Lovastatin, simvastatin, atorvastatin
Others	Digoxin, methadone, omeprazole, phenobarbital, theophylline, warfarin, levodopa, buprenorphine, irinotecan
Reference: Rossi, 2005; Micromedex

For a complete list, see CYP3A4 ligands and CYP2C9 ligands. For further updating on interactions and appropriate management, see Herbological.com – St John's Wort Interactions table (outdated since 2005).

Pharmacodynamic interactions

In combination with other drugs that may elevate 5-HT (serotonin) levels in the central nervous system (CNS), St John's wort may contribute to serotonin syndrome, a potentially life-threatening adverse drug reaction.

Drugs that may contribute to serotonin syndrome with St John's wort

Class	Drugs
Antidepressants	MAOIs, TCAs, SSRIs, SNRIs, mirtazapine
Opioids	Tramadol, meperidine (pethidine), Levorphanol
CNS stimulants	Phentermine, diethylpropion, amphetamines, sibutramine, cocaine
5-HT1 agonists	Triptans
Psychedelic drugs	Methylenedioxymethamphetamine (MDMA), lysergic acid diethylamide (LSD), psilocybin / psilocin, Mescaline and virtually every serotonergic psychedelic.
Others	Selegiline, tryptophan, buspirone, lithium, linezolid, 5-HTP, dextromethorphan
Reference:

Detection in body fluids

Hypericin, pseudohypericin, and hyperforin may be quantitated in plasma as confirmation of usage and to estimate the dosage. These three active substituents have plasma elimination half-lives within a range of 15–60 hours in humans. None of the three has been detected in urine specimens.

Chemical constituents

The plant contains the following:

• Flavonoids (e.g. epigallocatechin, rutin, hyperoside, isoquercetin, quercitrin, quercetin, amentoflavone, biapigenin, astilbin, myricetin, miquelianin, kaempferol, luteolin)
• Phenolic acids (e.g. chlorogenic acid, caffeic acid, p-coumaric acid, ferulic acid, p-hydroxybenzoic acid,vanillic acid)
• Naphthodianthrones (e.g. hypericin, pseudohypericin, protohypericin, protopseudohypericin)
• Phloroglucinols (e.g. hyperforin, adhyperforin)
• Tannins (unspecified, proanthocyanidins reported)
• Volatile oils (e.g. 2-methyloctane, nonane, 2-methyldecane, undecane, α-pinene, β-pinene,α-terpineol, geraniol, myrcene, limonene, caryophyllene, humulene)
• Saturated fatty acids (e.g. isovaleric acid (3-methylbutanoic acid), myristic acid, palmitic acid, stearic acid)
• Alkanols (e.g. 1-tetracosanol, 1-hexacosanol)
• Vitamins & their analogues (e.g. carotenoids, choline, nicotinamide, nicotinic acid)
• Miscellaneous others (e.g. pectin, β-sitosterol, hexadecane, triacontane, kielcorin, norathyriol)

The naphthodianthrones hypericin and pseudohypericin along with the phloroglucinol derivative hyperforin are thought to be among the numerous active constituents. It also contains essential oils composed mainly of sesquiterpenes.

Hypericin	Pseudohypericin	Adhyperforin	File:Hyperforin2DACS.svg Hyperforin
File:Amentoflavone2DACS.svg Amentoflavone	File:Hyperoside2DACS.svg Hyperoside	File:Rutin2DACS.svg Rutin	File:Kaempferol2DACS.svg Kaempferol
File:Myricetin2DACS.svg Myricetin	File:Quercetin2DACS.svg Quercetin	File:Quercetrin2DACS.svg Quercetrin	File:Isoquercitrin2DACS.svg Isoquercitrin
File:Luteolin2DACS.svg Luteolin	File:Catechin2DACS.svg Catechin	File:Epicatechin2DACS.svg Epicatechin	File:Epigallocatechin2DACS.svg Epigallocatechin
File:Chlorogenic acid2DACS.svg Chlorogenic acid	File:Caffeic acid2DACS.svg Caffeic acid	File:Kielcorin2DACS.svg Kielcorin	File:Norathyriol2DACS.svg Norathyriol

Mechanism of action

St. John's wort (SJW), similarly to other herbal products, contains a whole host of different chemical constituents that may be pertinent to its therapeutic effects. Hyperforin and adhyperforin, two phloroglucinol constituents of SJW, is a TRPC6 receptor agonist and, consequently, it induces noncompetitive reuptake inhibitor of monoamines (specifically, dopamine, norepinephrine, and serotonin), GABA, and glutamate when it activates this receptor. It inhibits reuptake of these neurotransmitters by increasing intracellular sodium ion concentrations. Moreover, SJW is known to downregulate the β₁ adrenoceptor and upregulate postsynaptic 5-HT_1A and 5-HT_2A receptors, both of which are a type of serotonin receptor. Other compounds may also play a role in SJW's antidepressant effects such compounds include: oligomeric procyanidines, flavonoids (quercetin), hypericin, and pseudohypericin.

In humans, the active ingredient hyperforin is a monoamine reuptake inhibitor which also acts as an inhibitor of PTGS1, Arachidonate 5-lipoxygenase, SLCO1B1 and an inducer of cMOAT. Hyperforin is also a powerful anti-inflammatory compound with anti-angiogenic, antibiotic, and neurotrophic properties. Hyperforin also has an antagonistic effect on NMDA receptors, a type of glutamate receptor. According to one study, hyperforin content correlates with therapeutic effect in mild to moderate depression. Moreover, a hyperforin-free extract of St John's wort (Remotiv) may still have significant antidepressive effects. The limited existing literature on adhyperforin suggests that, like hyperforin, it is a reuptake inhibitor of monoamines, GABA, and glutamate.

Compound	Conc.	log P	PSA	pKa	Formula	MW	CYP1A2	CYP2C9	CYP2D6	CYP3A4	PGP	t1/2 (h)	Tmax (h)	Cmax (mM)	CSS (mM)	Notes/Biological activity
Phloroglucinols (2-5%)
Adhyperforin	0.2-1.9	10-13	71.4	8.51	C36H54O4	550.81	?	?	?	?	?	?	?	?	?	Inhibits reuptake of: 5-HT, DA, NE, GABA and Glu via TRPC6 activation
Hyperforin	2-4.5	9.7-13	71.4	8.51	C35H52O4	536.78	+	+/-	-	+	+	3.5-16	2.5-4.4	15-235	53.7	Serves as a TRPC6 and PXR agonist. Reuptake inhibitor of 5-HT (205nM), DA (102nM), NE (80nM), GABA (184nM), Glu (829nM), Gly and Ch (8.5μM). Angiogenesis, COX-1 (300nM), 5-LO (90nM), SIRT1 (15μM), SIRT2 (28μM) and MRSA (1.86μM) inhibitor.
Naphthodianthrones (0.03-3%)
Hypericin	0.003-3	7.5-10	156	6.9±0.2	C30H16O8	504.44	0	- (3.4 μM)	- (8.5 μM)	- (8.7 μM)	?	2.5-6.5	6-48	0.66-46	?	Is a topoisomerase II, PKA (10μM), PKC (27nM), CK1 (3μM),CK2 (6nM), MAPK (4nM), EGFR (35nM),InsR (29nM), PI3K (180nM), DBH (12.4μM), DNA polymerase A (14.7μM), HIV-1 RT (770nM), COMT, MAOA (68μM) and MAOB (420μM), succinoxidase (8.2μM), GSR (2.1nM), GPx (5.2μM),GST (6.6μM) and CuZnSOD (5.25μM) inhibitor. Binds to the NMDA receptor (Ki=1.1μM), μ-opioid, κ-opioid, δ-opioid, 5-HT6, CRF1, NPY-Y1, NPY-Y2 and σ receptors. Exhibits light-dependent inhibitory effects on HIV-1 and cancers.
Pseudohypericin	0.2-0.23	6.7±1.8	176	7.16	C30H16O9	520.44	?	?	?	?	?	24.8-25.4	3	1.4-16	0.6-10.8	Photosensitiser and antiretroviral like hypericin. PKC inhibitory effects in vitro.
Flavonoids (2-12%)
Amentoflavone	0.01-0.05	3.1-5.1	174	2.39	C30H18O10	538.46	?	- (35 nM)	- (24.3 μM)	- (4.8 μM)	?	?	?	?	?	Serves as a fatty acid synthase (FASN) inhibitor, opioid antagonist, and a negative allosteric modulator at the benzodiazepine site of the GABAA receptor.
Apigenin	0.1-0.5	2.1±0.56	87	6.63	C15H10O5	270.24	?	?	?	?	?	?	?	?	?	Benzodiazepine receptor ligand (Ki=4μM) with anxiolytic effects. Also has anti-inflammatory, anticancer, cancer-preventing and antioxidant effects.
Catechin	2-4	1.8±0.85	110	8.92	C15H14O6	290.27	?	?	?	?	?	?	?	?	?	Anticancer, antioxidant, cardioprotective and antimicrobial. Cannabinoid receptor CB1 ligand.
Epigallocatechin	?	-0.5-1.5	131	8.67	C15H14O6	290.27	?	?	?	?	?	1.7±0.4a	1.3-1.6a	?	?	Found in higher concentrations in Green tea. Antioxidant. CB1 receptor ligand (Ki=35.7 μM).
Hyperoside	0.5-2	1.5±1.7	174	6.17	C21H20O12	464.38	?	?	- (3.87μM)	?	?	?	?	?	?	Has anti-fungal effects in vitro (against the plant pathogens P. guepini and Drechslera), neuroprotective effects via the PI3K/Akt/Bad/BclXL signalling pathway in vitro, anti-inflammatory effects via NF-κB inhibition in vitro, D2 receptor-dependent antidepressant-like effects in vivo, and antiglucocorticoid-like effects in vitro.
Kaempferol	?	2.1±0.6	107	6.44	C15H10O6	286.24	?	?	?	+/-	?	?	?	?	?	Inhibits the following: inflammation (via NF-κB and STAT1 inhibition), cancer, HDAC, bacteria, viruses, protozoa and fungi. It is also known to prevent cardiovascular disease and cancer.
Luteolin	?	2.4±0.65	107	6.3	C15H10O6	286.24	-	?	?	?	?	?	?	?	?	Has anti-inflammatory, anticancer, anti-allergic and antioxidant effects. May also have positive effects on people with autism spectrum disorders. Potent non-selective competitive inhibitor of PDE1-5.
Quercetin	2-4	2.2±1.5	127	6.44	C15H10O7	302.24	- (7.5 μM) b	- (47 μM) b	- (24 μM) b	- (22 μM) b	-	20-72c	8c	?	?	Has anti-cancer, anti-inflammatory, anti-allergic, anti-asthmatic, antihypertensive, analgesic, neuroprotective, gastroprotective, anti-diabetic, cardiovascular disease-preventing, antioxidant, antidepressant-like (in rat models of depression), anxiolytic-like, sedative, antimicrobial and athletic performance-promoting effects. Non-selective PDE1-4 inhibitor that is slightly selective for PDE3/4 over PDE1/2.
Rutin	0.3-1.6	1.2±2.1	266	6.43	C27H30O16	610.52	?	?	?	?	?	?	?	?	?	Has anticancer, cardioprotective, nephroprotective, antioxidant, anti-inflammatory, antidiabetic, procognitive and antilipidaemic effects.
Phenolic acids (~0.1%)
Caffeic acid	0.1	1.4±0.4	77.8	3.64	C9H8O4	180.16	?	?	?	-	?	?	?	?	?	Anticancer, hepatoprotective, antibacterial and antioxidant effects reported.
Chlorogenic acid	<0.1%	-0.36±0.43	165	3.33	C16H18O9	354.31	0	0	0	0	?	?	?	?	?	Antibacterial, anticancer and antioxidant effects have been demonstrated.

Acronyms and symbols

Acronym/Symbol	Meaning
MW	Molecular weight in g•mol−1.
PGP	P-glycoprotein
t1/2	Elimination half-life in hours
Tmax	Time to peak plasma concentration in hours
Cmax	Peak plasma concentration in mM
CSS	Steady state plasma concentration in mM
$\log P$	Partition coefficient. These values are experimental values taken from ChemSpider and [1] (the access dates are both 13–15 December 2013) where available or, if they are not available approximations are taken from [www.chemaxon.com/download/marvin/for-end-users/ ChemAxon MarvinSketch] 6.1.4 & [2]
PSA	Polar surface area of the molecule in question in square angstroms (Å2). Obtained from PubChem (the access date is the 13th of December 2013).
Conc.	These values pertain to the approximation concentration (in %) of the constituents in the fresh plant material
-	Indicates inhibition of the enzyme in question.
+	Indicates an inductive effect on the enzyme in question.
0	No effect on the enzyme in question.
5-HT	5-hydroxytryptamine — synonym for serotonin.
DA	Dopamine
NE	Norepinephrine
GABA	γ-aminobutyric acid
Glu	Glutamate
Gly	Glycine
Ch	Choline
a	Pharmacokinetic data for ECG comes from a study of its pharmacokinetics after oral administration of green tea.
b	Comes from this source.
c	Pharmacokinetic data for quercetin comes from a study using pure oral quercetin, not a SJW extract.

Notes:

43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.

Livestock

Poisoning

In large doses, St John's wort is poisonous to grazing livestock (cattle, sheep, goats, horses). Behavioural signs of poisoning are general restlessness and skin irritation. Restlessness is often indicated by pawing of the ground,headshaking, head rubbing, and occasional hindlimb weakness with knuckling over, panting, confusion, and depression. Mania and hyperactivity may also result, including running in circles until exhausted. Observations of thick wort infestations by Australian graziers include the appearance of circular patches giving hillsides a ‘crop circle’ appearance, it is presumed, from this phenomenon. Animals typically seek shade and have reduced appetite. Hypersensitivity to water has been noted, and convulsions may occur following a knock to the head. Although general aversion to water is noted, some may seek water for relief.

Severe skin irritation is physically apparent, with reddening of non-pigmented and unprotected areas. This subsequently leads to itch and rubbing, followed by further inflammation, exudation, and scab formation. Lesions and inflammation that occur are said to resemble the conditions seen in foot and mouth disease. Sheep have been observed to have face swelling, dermatitis, and wool falling off due to rubbing. Lactating animals may cease or have reduced milk production; pregnant animals may abort. Lesions on udders are often apparent. Horses may show signs of anorexia, depression (with a comatose state), dilated pupils, and injected conjunctiva.

Diagnosis

Increased respiration and heart rate is typically observed while one of the early signs of St John's wort poisoning is an abnormal increase in body temperature. Affected animals will lose weight, or fail to gain weight; young animals are more affected than old animals. In severe cases death may occur, as a direct result of starvation, or because of secondary disease or septicaemia of lesions. Some affected animals may accidentally drown. Poor performance of suckling lambs (pigmented and non-pigmented) has been noted, suggesting a reduction in the milk production, or the transmission of a toxin in the milk.

Photosensitisation

Most clinical signs in animals are caused by photosensitisation. Plants may induce either primary or secondary photosensitisation:

• primary photosensitisation directly from chemicals contained in ingested plants
• secondary photosensitisation from plant-associated damage to the liver.

Araya and Ford (1981) explored changes in liver function and concluded there was no evidence of Hypericum-related effect on the excretory capacity of the liver, or any interference was minimal and temporary. However, evidence of liver damage in blood plasma has been found at high and long rates of dosage.

Photosensitisation causes skin inflammation by a mechanism involving a pigment or photodynamic compound, which when activated by a certain wavelength of light leads to oxidation reactions in vivo. This leads to lesions of tissue, particularly noticeable on and around parts of skin exposed to light. Lightly covered or poorly pigmented areas are most conspicuous. Removal of affected animals from sunlight results in reduced symptoms of poisoning.

See also

• Dietary supplement
• EU Food supplements directive
• List of plants poisonous to equines

References

43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.

Further reading

• British Herbal Medicine Association Scientific Committee (1983). British Herbal Pharmacopoeia. West Yorkshire: British Herbal Medicine Association. ISBN 0-903032-07-4.
• 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.
  
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External links

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• Template:Cite web
• Template:Cite web
• Species Profile — St. Johnswort (Hypericum perforatum), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for St John's wort.

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