HIV is an ever-growing worldwide epidemic. According to the World Health Organization, in 2009 an estimated 33.3 million people worldwide were infected. The Centers for Disease Control estimated that in 2008, 1.2 million people age 13 and older were living with HIV in the U.S. Many of these individuals take up to 20 pills daily to keep their viral load low.

Lead researcher Anthony Ham, Ph.D., and his colleagues from ImQuest Biosciences in Frederick, Md., developed a transdermal patch which releases more than 96 percent of the HIV medication over the course of seven days. “As we enter the fourth decade of HIV/AIDS, this new delivery method will hopefully reduce the numerous pills most HIV patients have to take daily,” said Ham. “Taking medicines regularly reduces symptoms in HIV patients and extends lives. The transdermal patch offers an easier option for patients to comply with their medication regimes as compared to current treatments.”

This non-invasive patch also shows a potential economic advantage in terms of shipping costs as compared to pills or needles. With an estimated 15 million people living with HIV in developing countries and only 5.3 million people with access to treatment, this offers a more affordable and accessible way to address this unmet medical need.

Story Source: The above story is reprinted from materials provided by American Association of Pharmaceutical Scientists.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.

The Japanese scientists recently investigated the Effects of virus inactivation by      Pasteurization in Human Serum Albumin Concentrates ( Sekijyuji Albumin and Sekijyuji Albumin 25).These protein products were heat treated at 60.DEG.C. in liquid-phase(pasteurization) using several enveloped and non-enveloped viruses as marker viruses. Enveloped viruses were sindbis virus (SIN), vesicular stomatitis virus(VSV), herpes simplex virus type-1(HSV-1) and human immunodeficiency virus type-1(HIV-1). Non-enveloped viruses were polio virus (Polio V) and hepatitis A virus(HAV). The infectivity of all viruses except HAV was lost after 1hr heating, with logarithmic reduction value(LRV) for SIN,VSV,HSV-1,HIV-1 and Polio V of >5.1,>5.7,>4.3,>3.8 and >5.9, respectively. No significant difference in LRVs were observed between the two products. The infectivity of HAV, however, remained at 104.2-5.0TCID50 even after 10hr heating and LRV stayed in the range of 1.9 to 2.7

After spending some time reading several diet tips, you may have some questions that you need to ask. It’s best to ask a professional dietition or a doctor for the best answers, but in most cases, you cannot get in touch with a good doctor to get all of your answers from. This is why you should always see if you can find the answers to your health questions elsewhere. But make certain that the source you are getting your health questions answered from is a credible and reliable one.

All and all, if you find the right diet that is for you, you’ll know that you are doing something right once you see results. Just make sure that you read diet reviews online also to make sure you pick the right diet that best fits your lifestyle.

One woman name Sarah Summer was diagnosed with a rare form of yeast infection and was not able to find a cure. After intense research and study she found a remarkable, safe, effective, all natural cure for yeast infection.

Don’t spend hundreds on various creams and over the counter remedies that never give results for your yeast infection. Let Sarah Summer and her comprehensive e-book guide you on the way to a healthier and happier life without yeast infection.

There are a number of home remedies available. However, we list here only the most popular ones. But before we start, remember that even the best home remedies cannot get rid of acne in a week. This procedure takes time and you need a lot of patience and determination to remove it from your skin forever. You can use these home remedies with lots of water intake to help your body get the correct balance. They will help you to reduce or eliminate the outbreak of acne. It also helps to prevent the formation of scars due to acne.

The first method is to rub ice into your acne scar for atleast three minutes. In two weeks, you will see the scars visibly reduced. Next, try the Aloe Vera treatment. You just need to rub your affected skin with the Aloe Vera gel, which you can easily avail at any local store. Wash it off after half an hour and see better results. The third method is using honey to scare off acne. Leave honey on the acne related areas overnight. Honey is a great medicine that helps to remove not only the scars but also acne itself.

The fourth method includes use of garlic. Rub some raw garlic on your face 2 to 3 times a day. You can see the results within a week. Garlic has a very good effect for treating acne. The fifth method is use of lemon juice. Just apply lemon juice on the infected areas every day before you go to sleep. The sixth method is use of fenugreek leaves. You need to make a paste of these leaves and apply them on the infected areas twice a day. Allow it to dry off completely on your skin before you wash it off. And other way is using the peel of orange paste. Also many people use benzoyl peroxide lotions to cure acne worldwide.

Finally for any of these remedies to really work, you need to flush into your system atleast 10 to 12 glasses of water daily. This will helps you to cleanse your body system and only then such home remedies will show any results. Also supplement your food with lots of fruits and vegetables. In short, you need to follow a healthy diet regime to give your body the best.

Now you may find that your dentist offers these invisible forms of braces, however you can expect to pay significantly more. Braces cost varies from orthodontist and dentist, however the invisible forms of dental braces are not for everyone. Usually the mild to severe cases are still better of using old trusty metal braces. With the combination of an archwire, palatal expander, elastics, and other devices, a patient that requires major movements will be directed down this path. Browse the orthodontist directory to find an orthodontist specializing in your choice of braces.

BracesReview.com gives patients and doctors a like a central hub where they can communicate. From a patient standpoint, you are now able to research all the available form of invisible braces and make an educated decision along with your doctor. While undergoing treatment, you will be able to get advice from other experienced dental braces users and keep you doctor on his/her toes.

ETIOLOGY OF TUBERCULOSIS:
M.tuberculosis is a thin, straight or slightly curver rods with round ends, measuring 2-5Mm.They may be uniform width but more often appear beaded with irregularly, unstained vacuoles or heavily stained knobs.On isolation on synthetic media,the cells may vary from coccoidal filamentous forms or as aggregated long strands called Serpentine cords.They are non -sporing , non-capsulated and non-motile.They are acid fast and acid-alcoholic fast.They are usually stained by Ziel-Neelson technique. They may also be stained by fluorescent dyes (e.g, auramine, Rhodamine).

CULTIVATION:
Three types of media are employed for the cultivation of M.tuberculosis.

1. Simple Synthetic Media
2. Oleic acid-albumin media
3. complex Organic Media.

GROWTH CHARACTERISTICS:
M.tuberculois is obligate aerobe.It grows well at pH 6-7.6.Increased carbondioxide  enhances the growth.Optimum temperature is 37 C°Doubling time of the bacilli is 18 hrs or more.Tubercle bacilli produce pale yellow or cream coloured colonies which are usually rough and granular.Saprophytic  forms grow more rapidly and proliferate well at 22 C° producing more pigmentation.

PATHOGENESIS:
Tubercle bacilli are excreted in the sputum by active patient of pulmonary T.B. Organism gain entry into the human body by inhalation, ingestion or directly through the skin.Inhalation is the most common method of infection and invasion through skin is most usual. When inhaled, the organisms reach alveoli where they settle and produce primary leision.The production and the development of leision and their healing and progression depends on the following factors:

1. Virulence of the organism
2. Resistance and hypersensitivity of the host
3. Size of entry of organisms
4. Route of entry of organisms

PATHOLOGY:
In case of pulmonary tuberculosis, the primary leision develops in the lungs, and the intrabronchial lymph nodes are effected most extensively.Histologycally the organisms evokes 2 types of leisions.

1. Exudative type
2. Productive type

• EXUDATIVE TYPE: Within a few days after tubercle bacilli first gain entry into the body,they cause an acute inflammatory reaction that results in the formation of characteristic tissue leision called Tubercle ( Latin; tubercle means small lymph).A tubercle consist of one or few tubercle bacilli surrounded by a small mass of pus, edema fluid,PMNLs and later on monocytes.It appears as a grey mass of pin-head size or smallIt may heal by resolution so that the entire exudate becomes absorbed or it may develop into second ( Productive ) type of leision.

• PRODUCTIVE TYPE:When virulence is high or microbial dosage is large or individual’s resistance is low, and person is hypersensitive, the leision fully develops within 2-4 weeks into a granuloma, this leision consists of 3 zones.

a- A Central Zone: Where a few cells may have fused to form one or more multinucleated giant cells with viable tubercle bacilli in their cytoplasm.

b- A Mid Zone: of pale epithelial cells often arranged rapidly.

c- A Peripheral Zone:consisting of fibroblasts, lyphocytes and monocytes leading eventually to extensive fibrosis.

In the next stage, the bacilli continue to grow,enlarging the tubercles and killing the tissues in the center.This necrotic process is known as Caseation necrosis.The dead tissues become coagulated into a cheesy mass.If the process continues, a number ofcaseous abcesses are formed which may fuse to form one large caseous mass.

A caseous tubercle may break into a bronchus, empties its contents there and forms a cavity.It may subsequently heal by fibrosis or calcification.The healed and calcified primary complex leisions are reffered to as Ghon Complex.

DISSEMINATION OF ORGANISMS INTO HOST:
Tubercle bacilli spread from the initial site via lymphatics to regional lymph nodes.The bacilli may spread farther to reach the thoracic duct and blood stream which in turn disseminate them to other organs ( Miliary T.B).The blood stream can be directly invaded by erosion of a vein by a caseating tubercle or lymph node.
If a caseated leision discharges its contents into a bronchus, the bacilli are aspirated and distributed to other parts of the lungs or ore swallowed and passed into stomach and intestine.

REINFECTION ( ADULT) TYPE OF TUBERCULOSIS:
Reinfection (adult) type tuberculosis occurs when tubercle bacilli re enter the host body after a primary infection is completely or partially healed. Bacilli may be introduced from an outside source or internally from a partially healed tubercle. This type is characterized by chronic tissue leision, the formation of tubercle, caseation and fibrosis. The healing is rapid and tissues are highly defensive because of the allergy( Hypersensitivity) to primary infection. The differences between primary and reactivation tuberculosis are attributed to Acquired resistance and Hypersensitivity induced by the first infection of the host with tubercle bacilli.

TUBERCULIN TEST:
Delayed type of hypersensitivity to tuberculin is highly specific for tubercle bacilliand closely related mycobacteria.Tuberculin is a diluted proteinaceous antigenic sterile extract of tubercle bacilli.Two types of tuberculin are widely used.

1. Old tuberculin
2. Purified protein derivative

PURPOSE OF THE TEST:
Tuberculin test is performed to determine hypersensitive or allergic state to tuberculin.This reactivity appears about one month after infection and lasts for many years.

REACTION AND INTERPRETATION OF TUBERCULIN TEST:

• Negative Reaction: If no reaction develops at the site of inoculation, It shows the person has not been exposed to tubercle bacilli. Such individuals are not at the risk of developing disease from reactivation of primary infection.however, they are highly susceptible to primary infection and should be given BCG.

• Positive Reaction:The person develops induration exceeding 10mm in diameter, edema, erythema in 24-48hrs.This reaction persists for several days.Such positive reaction indicates past infection but does not show recent active infection.Such persons although have some degree of resistanse to the disease,are at the risk of developing disease from reactivation of primary infection.BCG vaccination may also lead to positive tuberculin reaction that may last for 3-7years.

CLINICAL FINDINGS:
Since the tubercle bacilli may involve every organ, its clinical manifestations are variable.Fatigue, weakness, weight loss, fever are the signs of tuberculosis.In pulmonary tuberculosis, chronic cough and spitting of blood is associatedwith far advanced leision.Meningitis and urinary tract involvement can occur in the absence of other signs of disease.Blood stream dissemination leads to Miliary tuberculosis.

LABORATORY DIAGNOSIS:
Specimens required for diagnosis consist of fresh sputum, castric washing, urine,pleural fluid, joint fluid, cerebral spinal fluid (CSF) and other suspected material.

• Stained smear: Staining of smear with Ziehl-Neelson technique or by fluorescent microscopy may reveal typical tubercle bacilli.If direct smear is negative,sputum may be concentrated by the addition of 20% cholorox (1% HCl solution), centrifuged and sediments are then stained.

• Culture: For primary isolation, solid media are preferred, such as Lowan stain-Jenson medium, Dosel’s egg medium, Dubos medium etc. The cultural characteristics and antigenic studies are helpful in diagnosis.For better results, the sputum should be concentrated by treating with 2% NaOH or other bactericidal agents and then neutralized and centrifuged.This kills the contamination in the sputum.

TREATMENT:
The most widely used drugs at present are isonicotinic acid hydrazide (INH),Rifampin , streptomycin and ethambutol. Unfortunately,resistant variants of tubercle bacilli against each of these drugs emerge very rapidly. Treatment is most successful when these drugs are used in combination (e.g, INH + rifampin or INH + Ethambutol) Other drugs ethionamide, pyrizineamide, veomycin, cycloserine are less frequently used because of their side effects. Clinical cure can usually be achieved within 6-18 months.

PREVENTION AND CONTROL:

1. Early detection of cases and source of infection ( Tuberculin test, X-ray) ant their prompt treatment until patients are non infectious.
2. Eradication of tuberculosis in cattles ( Test and Slaughter ) and pasteurization of milk.
3. Drug treatment of asymptomatic tuberculin converters in the age groupmost prone to develop complications ( Childrens) and in tuberculin positive persons who must receive immunosuppressive drugs.
4. IMMUNIZATION: Various living virulent tubercle bacilli, particularly BCG ( Bacillus Calmette Guerin) ;an attenuated bovine organism have been used to induse an amount of resistance in those heavily exposed to infection.
5. INDIVIDUAL HOST RESISTANCE: Non specific factors may reduce host resistance,thus favouring the conversion of asymptomatic infection into disease.Among such activators of T.B are starvation, gastrectomy and suppression of cellular immunityby drugs e.g, Cortico steroids or by disease e.g, AIDS.such patients may receive INH prophylaxis at any age.