Top videos

implant
9,180 Views ยท 2 years ago

WORLD`S BEST IMMEDIATE ZIRCONIA DENTAL IMPLANT SOLUTION video

Scott Stevens
16,919 Views ยท 2 years ago

Cisplatin is in a class of drugs known as platinum-containing compounds used to treat various types of cancers including metastatic testicular and ovarian tumors. The molecule was first discovered in 1845, but did not receive FDA approval until 1978. Today it is known as the "penicillin of cancer drugs," because it is so effective for many different cancers. There are three key players involved in Cisplatin's mechanism: (1) Cisplatin, (2) DNA (3) and an HMG Protein. Most Cisplatin enters the body through active transport, but some molecules are passively defused through the cell membrane. Once in the nucleus, Cisplatin can form an adduct with two consecutive guanine bases within a strand of DNA. The molecule loses its chlorine atoms in exchange for the nitrogen atoms of the target guanines. Cisplatin can bond more tightly with nitrogen because nitrogen balances the platinum charge more effectively than chlorine. It is this adduct-induced DNA bend that allows binding of proteins which contain the high mobility group, HMG domain. Once the protein is bound to the DNA, it inserts a wedge-like phenyl group of phenylalanine 37 into the widened minor groove created by the bend. The tightly bound HMG protein causes destacking of the nucleotide bases, resulting in the DNA helix becoming kinked. In this way, Cisplatin can be thought of as a monkey wrench in the DNA repair system. With the HMG protein bound to the DNA, the modified strand is not repaired properly and so the cell dies. The success of Cisplatin depends on its ratio of efficacy between cancerous and healthy cells.

Tuesday Wilson
9,999 Views ยท 2 years ago

Tampa body sculpting is the specialty of Dr. Thomas Su of the Artistic Lipo Sculpting Center. Dr. Suโ€™s dedication to body contouring has allowed him to finely hone his craft over the years, making him the most trusted Tampa lipo surgeon. To learn more about Tampa fat removal procedures, visit http://www.artlipo.com/liposuction/liposuction-body-areas/lipo-abdomen.html.

Scott Stevens
5,830 Views ยท 2 years ago

Hip Replacement Surgery

Histology
7,545 Views ยท 2 years ago

Histology of Tongue Circumvallate Papilla

Histology
3,780 Views ยท 2 years ago

Histology of Pituitary

Harvard_Student
9,545 Views ยท 2 years ago

Tracheal deviation Clinical Exam

Harvard_Student
9,320 Views ยท 2 years ago

Peripheral Venous Access Technique Video

Harvard_Student
11,431 Views ยท 2 years ago

The Role and Function of Nursing

Anatomist
32,007 Views ยท 2 years ago

The Nephron Functional Unit of Kidney

Alicia Berger
10,693 Views ยท 2 years ago

Eye Surgery penetrating Keratoplasty

Frank Vela
1,431 Views ยท 2 years ago

http://milagroparaelacne.plus101.com
---Como Quitar Acne Cara. Existe una CAUSA PRINCIPAL DEL ACNร‰. Y no siempre un producto para el acnรฉ ataca esta causa. Esto significa que, si bien podrรญas obtener un beneficio de lociones, u otros productos o terapias, nunca curarรกs tu acnรฉ con ellos.
Es un poco como tener un techo con goteras y "solucionarlo" poniendo recipientes para recoger el agua de lluvia que cae del techo. Para solucionar adecuadamente el techo con goteras, se debe corregir la causa de raรญz, que es el agujero en el techo.
Entonces... ยฟCuรกl Es La Principal
Causa Del ACNE?
La causa del acnรฉ es un DESEQUILIBRIO HORMONAL. Esto es algo que las empresas del acnรฉ nunca te dirรกn...
... Sin embargo, saber la causa del acnรฉ es una cosa. Descubrir la forma de eliminar eficazmente esta causa es otra cosa...

Como, Quitar, Acne, Cara, manchas de acne, quitar el acne, cicatrices de acne, como quitar granos, como quitar espinillas, cicatrices de acne, eliminar el acne, como eliminar barros, eliminar los barros,

Mostafa Yakoot
7,525 Views ยท 2 years ago

TV interview with Dr. Mostafa Yakoot, MD discussing the published study for efficacy of a new local cream for diabetic foot ulcers. ุฏูƒุชูˆุฑ ู…ุตุทูู‰ ูŠุงู‚ูˆุช ุนู„ุงุฌ ุฌุฏูŠุฏ ู„ู„ู‚ุฏู… ุงู„ุณูƒุฑู‰

Anatomist
13,212 Views ยท 2 years ago

Larynx Anatomy and Physiology

NewsCanada
2,988 Views ยท 2 years ago

Stay active and push your body to its limit โ€“ tips on how you can mend strained muscles and prevent injury.

Sean Freeman
2,925 Views ยท 2 years ago

Charlotte NC
Best facial cosmetic surgeons Best facial plastic surgeon Browlift Charlotte endoscopic brow lift Charlotteโ€™s top facial plastic surgeon Facial plastic surgeons Facial plastic surgery Face lifts Facial mini-tuck Lip enhancement Lip augmentation Nose job Nose job cost Nose surgery Rhinoplasty Rhinoplasty Expert Rhinoplasty and teens Revision rhinoplasty Teen Rhinoplasty, Charlotte Teen Rhinoplasty, North Carolina Teen Rhinoplasty Expert Top rhinoplasty surgeons Best Charlotte rhinoplasty surgeons: C local listings,#8, 9 organic listings

samer kareem
1,632 Views ยท 2 years ago

Proper placement of sutures enhances the precise approximation of the wound edges, which helps minimize and redistribute skin tension. Wound eversion is essential to maximize the likelihood of good epidermal approximation. Eversion is desirable to minimize the risk of scar depression secondary to tissue contraction during healing. Usually, inversion is not desirable, and it probably does not decrease the risk of hypertrophic scarring in an individual with a propensity for hypertrophic scars. The elimination of dead space, the restoration of natural anatomic contours, and the minimization of suture marks are also important to optimize the cosmetic and functional results.

samer kareem
2,197 Views ยท 2 years ago

Pathologic changes in chronic obstructive pulmonary disease (COPD) occur in the large (central) airways, the small (peripheral) bronchioles, and the lung parenchyma. Most cases of COPD are the result of exposure to noxious stimuli, most often cigarette smoke. The normal inflammatory response is amplified in persons prone to COPD development. The pathogenic mechanisms are not clear but are most likely diverse. Increased numbers of activated polymorphonuclear leukocytes and macrophages release elastases in a manner that cannot be counteracted effectively by antiproteases, resulting in lung destruction. The primary offender has been found to be human leukocyte elastase, with synergistic roles suggested for proteinase-3 and macrophage-derived matrix metalloproteinases (MMPs), cysteine proteinases, and a plasminogen activator. Additionally, increased oxidative stress caused by free radicals in cigarette smoke, the oxidants released by phagocytes, and polymorphonuclear leukocytes all may lead to apoptosis or necrosis of exposed cells. Accelerated aging and autoimmune mechanisms have also been proposed as having roles in the pathogenesis of COPD.[5, 6] Cigarette smoke causes neutrophil influx, which is required for the secretion of MMPs; this suggests, therefore, that neutrophils and macrophages are required for the development of emphysema. Studies have also shown that in addition to macrophages, T lymphocytes, particularly CD8+, play an important role in the pathogenesis of smoking-induced airflow limitation. To support the inflammation hypothesis further, a stepwise increase in alveolar inflammation has been found in surgical specimens from patients without COPD versus patients with mild or severe emphysema. Indeed, mounting evidence supports the concept that dysregulation of apoptosis and defective clearance of apoptotic cells by macrophages play a prominent role in airway inflammation, particularly in emphysema.[7] Azithromycin (Zithromax) has been shown to improve this macrophage clearance function, providing a possible future treatment modality.[8] In patients with stable COPD without known cardiovascular disease, there is a high prevalence of microalbuminuria, which is associated with hypoxemia independent of other risk factors.[9] Chronic bronchitis Mucous gland hyperplasia (as seen in the images below) is the histologic hallmark of chronic bronchitis. Airway structural changes include atrophy, focal squamous metaplasia, ciliary abnormalities, variable amounts of airway smooth muscle hyperplasia, inflammation, and bronchial wall thickening.

samer kareem
2,111 Views ยท 2 years ago

The brachial plexus is the network of nerves that sends signals from your spine to your shoulder, arm and hand. A brachial plexus injury occurs when these nerves are stretched, compressed, or in the most serious cases, ripped apart or torn away from the spinal cord. Minor brachial plexus injuries, known as stingers or burners, are common in contact sports, such as football. Babies sometimes sustain brachial plexus injuries during birth. Other conditions, such as inflammation or tumors, may affect the brachial plexus. The most severe brachial plexus injuries usually result from auto or motorcycle accidents. Severe brachial plexus injuries can leave your arm paralyzed, with a loss of function and sensation. Surgical procedures such as nerve grafts, nerve transfers or muscle transfers can help restore function.

samer kareem
2,866 Views ยท 2 years ago

Most of the time, treatment for hemorrhoids involves steps that you can take on your own, such as lifestyle modifications. But sometimes medications or surgical procedures are necessary. Medications If your hemorrhoids produce only mild discomfort, your doctor may suggest over-the-counter creams, ointments, suppositories or pads. These products contain ingredients, such as witch hazel or hydrocortisone, that can relieve pain and itching, at least temporarily. Don't use an over-the-counter cream or other product for more than a week unless directed by your doctor. These products can cause side effects, such as skin rash, inflammation and skin thinning. Minimally invasive procedures If a blood clot has formed within an external hemorrhoid, your doctor can remove the clot with a simple incision, which may provide prompt relief. For persistent bleeding or painful hemorrhoids, your doctor may recommend another minimally invasive procedure. These treatments can be done in your doctor's office or other outpatient setting. Rubber band ligation. Your doctor places one or two tiny rubber bands around the base of an internal hemorrhoid to cut off its circulation. The hemorrhoid withers and falls off within a week. This procedure โ€” called rubber band ligation โ€” is effective for many people. Hemorrhoid banding can be uncomfortable and may cause bleeding, which might begin two to four days after the procedure but is rarely severe. Injection (sclerotherapy). In this procedure, your doctor injects a chemical solution into the hemorrhoid tissue to shrink it. While the injection causes little or no pain, it may be less effective than rubber band ligation. Coagulation (infrared, laser or bipolar). Coagulation techniques use laser or infrared light or heat. They cause small, bleeding, internal hemorrhoids to harden and shrivel. While coagulation has few side effects, it's associated with a higher rate of hemorrhoids coming back (recurrence) than is the rubber band treatment. Surgical procedures If other procedures haven't been successful or you have large hemorrhoids, your doctor may recommend a surgical procedure. Surgery can be performed on an outpatient basis or you may need to stay in the hospital overnight. Hemorrhoid removal. During a hemorrhoidectomy, your surgeon removes excessive tissue that causes bleeding. Various techniques may be used. The surgery may be done with a local anesthetic combined with sedation, a spinal anesthetic or a general anesthetic. Hemorrhoidectomy is the most effective and complete way to treat severe or recurring hemorrhoids. Complications may include temporary difficulty emptying your bladder and urinary tract infections associated with this problem. Most people experience some pain after the procedure. Medications can relieve your pain. Soaking in a warm bath also may help. Hemorrhoid stapling. This procedure, called stapled hemorrhoidectomy or stapled hemorrhoidopexy, blocks blood flow to hemorrhoidal tissue. Stapling generally involves less pain than hemorrhoidectomy and allows an earlier return to regular activities. Compared with hemorrhoidectomy, however, stapling has been associated with a greater risk of recurrence and rectal prolapse, in which part of the rectum protrudes from the anus. Talk with your doctor about what might be the best option for you.




Showing 311 out of 395