What was an effect of the publishing jungle by uptown sinclair?

It seems you're asking about an effect of a book or work called "The Publishing Jungle" by Upton Sinclair. While Upton Sinclair was a famous author, there is no known work of his by that name.

It's possible you're mistaking the title or author. Could you please double-check the title and author of the work you're asking about?

For example, you might be thinking of:

* "The Jungle" by Upton Sinclair: This is a famous novel exposing the horrific conditions in Chicago's meatpacking industry. It had a significant impact on food safety laws and regulations in the United States.

* Another work by Upton Sinclair: Sinclair wrote extensively, so there might be a less well-known work that you're thinking of.

* A work by a different author: Perhaps you're thinking of a different author who wrote about the publishing industry.

Once you provide more information about the specific work, I can help you understand its impact.