Reliant Tech seeks $95M IPO for dermatology lasers — Mountain View, Calif.-based Reliant Technologies, a developer of medical lasers for “skin rejuvenation” treatment, filed to raise as much as $95 million in an initial offering. The company currently markets two laser systems for skin treatment under the Fraxel brand name, and intends to launch a third one next year.

Oddly enough, Reliant Tech’s IPO filing comes just days after Reliant Pharmaceuticals filed for a $400 million initial offering (see our coverage in this daily briefing). That should certainly keep investors on their toes. Journalists, too — I almost didn’t cover this IPO because I thought I’d already written about it.

Although it has products on the market, Reliant Tech is not only still losing money, its losses are apparently continuing to mount. Total revenues have grown substantially, to $57.4 million in 2006 from $4.5 million in 2004, but its net losses have also kept pace, largely as a result of mounting sales and marketing expenses. Net losses in 2006 were $20.9 million, up from $13.3 million in 2004; for the first half of 2007, the company posted a loss of $10.9 million on $35.3 million in revenue.

Reliant Tech raised $37 million in its two most recent fundings, most recently drawing in $15 million in a fifth round, according to VentureWire (subscription required).

Neuromodulator Leptos raises $20M for obesity implant — Leptos Biomedical, a Brooklyn Center, Minn., developer of obesity-control implants, raised $20 million in a third funding round, VentureWire reports. Investors included Latterell Venture Partners, Spray Venture Partners, Thomas McNerney & Partners and Technology Partners.

Leptos is developing what it calls an “implantable pulse generator” designed to send electric signals into the sympathetic nervous system in order to suppress appetite and induce the burning of fat. The company has apparently already conducted a pilot trial of the device, which it says the new funding will allow it to extend. Leptos hasn’t disclosed additional details about its technology; on its Web site, the page devoted to approach is a two-paragraph stub filled with boilerplate.

I’ve written earlier about EnteroMedics, another company hoping to treat obesity using an implant that interferes with signals transmitted along the vagus nerve — you can read our previous coverage here. In general, the whole field of “neuromodulation” is heating up quite a bit these days, with companies hoping to use timed electrical pulses to the nervous system for treating everything from epilepsy to sleep apnea to hypertension — although it’s worth bearing in mind that almost all of these approaches are so far unproven. See our previous coverage of other companies in this space here, here, here, here, and here.

Founded in 2003, Leptos is the brainchild of serial physician-entrepreneur John Dobak, who previously founded hypothermia-inducer InnerCool Therapies and CryoGen, which developed a cryothermic technique for stanching uterine bleeding. Both companies have since been acquired — InnerCool for $6 million (after raising $49 million) and CryoGen for something between $40 million and $150 million (after raising roughly $60 million).

Skin-clinic chain Calidora raises $4M for SoCal expansion — Calidora Skin Clinic, a chain of four “medical-aesthetic” skin-care clinics in the Seattle area, raised $4 million in a first funding round to expand its operations into southern California. Roughly half the funding was provided by the company’s existing angel investors and insiders, with Fluke Venture Partners providing the rest.

From the release:

Courtion said the funding enables the completion of expansion plans underway in Manhattan Beach, Marina Del Ray, and Glendale, Calif., and other real estate and partnership opportunities on the near horizon. The company is working with Southern California based Caruso Affiliated, a leading retail developer, on two of the three properties, including the Americana at Brand, which is slated to open in downtown Glendale in Spring of 2008.

Featured companies: VistaGen Therapeutics, MindWeavers, Cutanea Life Sciences, Heptares Therapeutics

VistaGen raises $3.75M for stem-cell based drug discovery — South San Francisco, Calif.-based VistaGen Therapeutics, a biotech that uses human embryonic stem cells to discover new drugs, raised $3.75 million in a bridge financing as it prepares to raise up to $20 million in a fourth round, VentureWire reports (subscription required). Montaur Capital Partners provided the funding.

VistaGen, founded in 1998, isn’t your typical stem-cell company. Where companies ranging from Geron and Advanced Cell Technology to Novocell aim to use the controversial cells — which must be derived from five-day-old embryos in a destructive process — directly as therapies to help regenerate damaged organs, VistaGen merely grows stem-cell cultures in its labs and uses those cultures to discover and run preliminary safety tests on drug candidates.

The embryonic cells are capable of “differentiating” into any type of cell in the body, which VistaGen says makes them valuable for determining how an experimental drug molecule will interact with living human tissue. The company uses its stem-cell “screens” to identify promising small-molecule drugs (that is, compounds that can be swallowed rather than injected) and to determine what side effects they might cause once ingested. Over time, VistaGen suggests, it might develop screens for drugs that trigger stem cells’ regenerative powers, potentially inducing cellular repair in conditions such as heart disease or diabetes.

For now, however, VistaGen’s lead drug candidate is a relatively prosaic compound called AV-101 that the company plans to begin testing against epilepsy later this year. AV-101 is a “prodrug” — a molecule that’s converted into an active form by the body’s natural metabolism — that turns into a neuroinhibitor once it reaches the brain. In addition to epilepsy, VistaGen suggests that the drug may also have uses in stroke, neuropathic pain and neurodegenerative diseases such as Alzheimer’s disease. For more detailed info, see the company’s Web site here and here.

Oxford’s MindWeavers raises $1.1M for mind-altering software — MindWeavers, an Oxford, England-based software company that develops software designed to improve mental function, raised $1.1 million (£558,000) through City and Merchant Group. Next year, the company hopes to raise up to £1 million with a listing on London’s Plus Markets electronic exchange.

MindWeavers develops its programs based on neuroscience research from Oxford University, which spun out the company in 2000. Its first product was Phonomena, a interactive game for children that the company says builds auditory discrimination and language skills. Several other programs are designed to improve “neuroplasticity” and to stimulate brain activity in middle-aged and elderly people in order to ward off age-related cognitive decline. VentureWire has more.

Skin-care firm Cutanea raises “millions” in convertible debt — Cutanea Life Sciences, a Cambridge, Mass., specialty pharmaceutical company focused on dermatology, raised a “multi-million” dollar round of convertible debt, VentureWire reports. Institutional investors such as Nexus Medical Partners provided the funding. Cutanea licenses neglected or cast-off experimental drugs from universities or other companies and runs them through human tests.

Heptares Therapeutics spins out of Britain’s MRC — The MRC Laboratory of Molecular Biology has spun out a new company, Heptares Therapeutics, with undisclosed seed funding from MVM Life Sciences Partners. The company will focus on drugs for diseases of the nervous system and metabolism. (Hat tip: PE Hub.)

CORRECTION: Due to incorrect information supplied by VentureWire, the VistaGen Therapeutics item originally stated that Montreux Equity Partners provided funding. In fact, Montaur Capital Partners led the funding. The VentureWire correction is here.

The company is at work on localized drug-delivery techniques that could serve as alternatives to systemic drugs, potentially improving their effectiveness while limiting side effects. Its initial focus lies in dermatology, a field in which “local application” — that is, ointments, creams and lotions — is already in common practice. Talima hasn’t revealed much about its technology beyond describing it as a “micro-implant” system, which could mean almost anything. The new funding will carry its leading drug candidates — whatever they are — into mid-stage human testing.

The round was led by US Venture Partners and Latterell Venture Partners, joined by current investors De Novo Ventures and Palo Alto Healthcare.

Neosil is developing a peptide-based hair-growth product for male pattern baldness and a topical antimicrobial treatment. It describes the debt financing here.

Therative makes and markets a pimple-clearing device called ThermaClear, which received FDA “clearance” for direct consumer sales last year. The device releases pulses of heat designed to kill bacteria inside pimples, supposedly in a manner similar to laser treatments offered by dermatologists. The company sells ThermaClear over the Internet for $149.95.

Bessemer Venture Partners led the round, which also included Foundation Capital, RWI Ventures and Band of Angels. Therative had previously raised more than $5 million.

The company’s release is here; VentureWire has more (subscription required).